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1. BonnMu: a novel sequence-indexed resource of transposon induced maize mutations for functional genomics studies

Author:
Marcone Caroline; Altrogg Lena; Win Yan Niang; Stocker Tyll; Gardiner Jack M.; Portwood John L.; Opitz Nina; Annika Kortz; Baldauf Jutta; Hunter Charles T.; McCarty Donald R.; Schoof Heiko; Koch Karen E.; Hochholdinger Frank
Source:
Plant physiology 2020 v.2020 no. pp. -
ISSN:
1532-2548
Subject:
Zea mays; chromatin; corn; genomics; phenotype; plant physiology; reverse genetics; seedlings; start codon; transcription initiation site; transposons
Abstract:
... Sequence-indexed insertional libraries in maize (Zea mays L.) are fundamental resources for forward and reverse genetic studies. Here, we constructed a novel Mutator (Mu) insertional library in B73 inbred background designated BonnMu. A total of 1,152 Mu tagged F2-families were sequenced using the Mu-seq approach detecting 225,936 genomic Mu insertion sites and 41,086 high quality germinal Mu inse ...
Handle:
10113/7111135
DOI:
10.1104/pp.20.00478

2. Dynamic precision phenotyping reveals mechanism of crop tolerance to root herbivory

Author:
Wenchao Qu; Christelle A. M. Robert; Matthias Erb; Bruce E. Hibbard; Maxim Paven; Tassilo Gleede; Barbara Riehl; Lena Kersting; Aylin S. Cankaya; Anna T. Kunert; Youwen Xu; Michael J. Schueller; Colleen Shea; David Alexoff; So Jeong Lee; Joanna S. Fowler; Richard A. Ferrieri
Source:
Plant physiology 2016 v.172 no.2 pp. 776-788
ISSN:
0097-384X
Subject:
Diabrotica virgifera virgifera; Zea mays; amino acids; autoradiography; auxins; biosynthesis; corn; crop management; herbivores; pest resistance; pests; phenotype; plant breeding; positron-emission tomography; regrowth; root growth; roots
Abstract:
... The western corn rootworm (WCR; Diabrotica virgifera virgifera LeConte) is a major pest of maize (Zea mays) that is well adapted to most crop management strategies. Breeding for tolerance is a promising alternative to combat WCR but is currently constrained by a lack of physiological understanding and phenotyping tools. We developed dynamic precision phenotyping approaches using (11)C with positro ...
Handle:
10113/63261
DOI:
10.1104/pp.16.00735
PubMed:
27406166
PubMed Central:
PMC5047087
CHORUS:
10.1104/pp.16.00735
Chorus Open Access:
10.1104/pp.16.00735

3. Integration of experiments across diverse environments identifies the genetic determinants of variation in Sorghum bicolor seed element composition

Author:
Nadia Shakoor; Greg Ziegler; Brian P. Dilkes; Zachary Brenton; Richard Boyles; Erin L. Connolly; Stephen Kresovich; Ivan Baxter
Source:
Plant physiology 2016 v.170 no.4 pp. 1989-1998
ISSN:
0176-1617
Subject:
Sorghum bicolor; alleles; animal nutrition; biofuels; cadmium; calcium; chromosome mapping; elemental composition; genetic correlation; genetic variation; genotype-phenotype correlation; genotyping; grains; humans; ionome; loci; manganese; mineral content; nickel; nutrient content; nutritive value; phenotype; plant breeding; races; seedlings; seeds; selection methods; sequence homology; single nucleotide polymorphism; statistical models; zinc
Abstract:
... Increasing the bioavailable elemental nutrient content in the edible portions of the crop has the potential to increase the value of sorghum for human and animal nutrition. Seedling establishment and seed nutritional quality are in part determined by the sequestration of sufficient mineral nutrients. Identification of genes and alleles that modify element content in the grains of cereals, includin ...
Handle:
10113/62907
DOI:
10.1104/pp.15.01971
PubMed:
26896393
PubMed Central:
PMC4825124

4. Lipid droplet-associated proteins (LDAPs) are required for the dynamic regulation of neutral lipid compartmentation in plant cells

Author:
Satinder K. Gidda; Sunjung Park; Michal Pyc; Olga Yurchenko; Yingqi Cai; Peng Wu; David W. Andrews; Kent D. Chapman; John M. Dyer; Robert T. Mullen
Source:
Plant physiology 2016 v.170 no.4 pp. 2052-2071
ISSN:
1532-2548
Subject:
Arabidopsis thaliana; biogenesis; cold stress; droplets; eukaryotic cells; germination; heat stress; leaves; mutants; organelles; phospholipids; plant growth; proteins; seeds; stress response; tissues; triacylglycerols
Abstract:
... Eukaryotic cells compartmentalize neutral lipids into organelles called lipid droplets (LDs), and while much is known about the role of LDs in storing triacylglycerols (TAGs) in seeds, their biogenesis and function in non-seed tissues is poorly understood. Recently, we identified a class of plant-specific, LD-associated proteins (LDAPs) that are abundant components of LDs in non-seed cell types. H ...
Handle:
10113/62290
DOI:
10.1104/pp.15.01977
PubMed:
26896396
PubMed Central:
PMC4825156

5. The Structure and Catalytic Mechanism of Caffeoyl-CoA Methyltransferase -Methyltransferase

Author:
Alexander M. Walker; Steven A. Sattler; Matt Regner; Jeffrey P. Jones; John Ralph; Wilfred Vermerris; Scott E. Sattler; ChulHee Kang
Source:
Plant physiology 2016 v.172 no.1 pp. 78-92
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; acclimation; cold; cold tolerance; cytosol; fumaric acid; gas chromatography-mass spectrometry; gene expression; malates; metabolites; metabolomics; methyltransferases; mutants; photosynthesis; proteins; signal transduction; starch; sugars; temperate zones; temperature; transfer DNA
Abstract:
... Although cold acclimation is a key process in plants from temperate climates, the mechanisms sensing low temperature remain obscure. Here, we show that the accumulation of the organic acid fumaric acid, mediated by the cytosolic fumarase FUM2, is essential for cold acclimation of metabolism in the cold-tolerant model species Arabidopsis (Arabidopsis thaliana). A nontargeted metabolomic approach, u ...
Handle:
10113/63168
DOI:
10.1104/pp.16.00845
PubMed:
27457122
PubMed Central:
PMC5074638

6. Acylphloroglucinol biosynthesis in strawberry fruit

Author:
Chuankui Song; Ludwig Ring; Thomas Hoffmann; Fong-Chin Huang; Janet P. Slovin; Wilfried Schwab
Source:
Plant physiology 2015 v.169 no.3 pp. 1656-1670
ISSN:
0032-0889
Subject:
isotope labeling; glucosides; genes; malonyl coenzyme A; metabolites; strawberries; diploidy; amino acids; phytopharmaceuticals; anthocyanins; naringenin-chalcone synthase; proteins; naringenin; biosynthesis; fruits; Fragaria ananassa; transgenic plants; catalysts; chalcone; ripening; genetic techniques and protocols; fruit crops; evolutionary adaptation; phenolic compounds
Abstract:
... Phenolics have health-promoting properties and are a major group of metabolites in fruit crops. Through reverse genetic analysis of the functions of four ripening-related genes in the octoploid strawberry, Fragaria ×ananassa, we discovered four acylphloroglucinol (APG)-glucosides as native strawberry fruit metabolites whose levels were differently regulated in the transgenic fruits. The biosynthes ...
Handle:
10113/61438
DOI:
10.1104/pp.15.00794
PubMed:
26169681
PubMed Central:
PMC4634061

7. Determination of the Structure and Catalytic Mechanism of Sorghum bicolor Caffeic Acid O-Methyltransferase and the Structural Impact of Three brown midrib12 Mutations

Author:
Abigail R. Green; Kevin M. Lewis; John T. Barr; Jeffrey P. Jones; Fachuang Lu; John Ralph; Wilfred Vermerris; Scott E. Sattler; ChulHee Kang
Source:
Plant physiology 2014 v.165 no.4 pp. 1440-1456
ISSN:
0032-0889
Subject:
Lolium perenne; Medicago sativa; S-adenosylmethionine; Sorghum bicolor; alcohols; aldehydes; alfalfa; caffeate O-methyltransferase; calorimetry; crystal structure; enzyme activity; enzyme kinetics; enzyme substrates; genes; lignin; missense mutation; models; mutants; phenylpropanoids; titration
Abstract:
... The catalytic mechanism and substrate specificity of caffeic acid O-methyltransferase from Sorghum bicolor are deduced from crystal structures, site-directed mutagenesis, and kinetic and thermodynamic analyses. ...
Handle:
10113/59513
DOI:
10.1104/pp.114.241729
PubMed:
24948836
PubMed Central:
PMC4119030

8. Floral Transcriptomes in Woodland Strawberry Uncover Developing Receptacle and Anther Gene Networks

Author:
Courtney A. Hollender; Chunying Kang; Omar Darwish; Aviva Geretz; Benjamin F. Matthews; Janet Slovin; Nadim Alkharouf; Zhongchi Liu
Source:
Plant physiology 2014 v.165 no.3 pp. 1062-1075
ISSN:
0032-0889
Subject:
Fragaria vesca; anthers; flowers; fruiting; fruits; gene expression; messenger RNA; regulator genes; strawberries; transcriptome
Abstract:
... Flowers are reproductive organs and precursors to fruits and seeds. While the basic tenets of the ABCE model of flower development are conserved in angiosperms, different flowering plants exhibit different and sometimes unique characteristics. A distinct feature of strawberry (Fragaria spp.) flowers is the development of several hundreds of individual apocarpous (unfused) carpels. These individual ...
Handle:
10113/61533
DOI:
10.1104/pp.114.237529
PubMed:
24828307
PubMed Central:
PMC4081322

9. The Impact of Herbicide-Resistant Rice Technology on Phenotypic Diversity and Population Structure of United States Weedy Rice

Author:
Nilda Roma Burgos; Vijay Singh; Te Ming Tseng; Howard Black; Nelson D. Young; Zhongyun Huang; Katie E. Hyma; David R. Gealy; Ana L. Caicedo
Source:
Plant physiology 2014 v.166 no.3 pp. 1208-1220
ISSN:
0032-0889
Subject:
Oryza sativa; acetolactate synthase; chromosomes; color; flowering; genes; haplotypes; herbicide resistance; hulls; imazethapyr; inflorescences; introgression; phenology; phenotypic variation; population structure; progeny; rice; weed control; weeds; Arkansas
Abstract:
... Use of herbicide-resistant rice cultivars in the United States has led to the emergence of herbicide-resistant weedy rice formed predominantly by hybridization of cultivars with historical weeds characterized by black hulls and awns . ...
Handle:
10113/60672
DOI:
10.1104/pp.114.242719
PubMed:
25122473
PubMed Central:
PMC4226343

10. Natural Compounds as Next-Generation Herbicides

Author:
Franck E. Dayan; Stephen O. Duke
Source:
Plant physiology 2014 v.166 no.3 pp. 1090-1105
ISSN:
0032-0889
Subject:
bioactive properties; herbicide resistance; herbicides; mechanism of action; organic production; phytotoxins
Abstract:
... Natural products are an important resource in the discovery of herbicides . ...
Handle:
10113/60639
DOI:
10.1104/pp.114.239061
PubMed:
24784133
PubMed Central:
PMC4226356

11. Brachypodium as a model for the grasses: today and the future

Author:
Brkljacic, Jelena; Grotewold, Erich; Scholl, Randy; Mockler, Todd; Garvin, David F.; Vain, Philippe; Brutnell, Thomas; Sibout, Richard; Bevan, Michael; Budak, Hikmet; Caicedo, Ana L.; Gao, Caixia; Gu, Yong; Hazen, Samuel P.; Holt, Ben F. III; Vogel, John P.
Source:
Plant physiology 2011 v.157 no.1 pp. 3-13
ISSN:
1532-2548
Subject:
models; forage grasses; Brachypodium distachyon; genetic resources
Handle:
10113/50247
DOI:
10.1104/pp.111.179531

12. Optimizing Antenna Size to Maximize Photosynthetic Efficiency

Author:
Ort, Donald R.; Melis, Anastasios
Source:
Plant physiology 2011 v.155 no.1 pp. 79-85
ISSN:
0032-0889
Subject:
photosynthesis; chlorophyll; carbon dioxide; microalgae; canopy; plant architecture
Handle:
10113/49258
DOI:
10.1104/pp.110.165886

13. AINTEGUMENTA and AINTEGUMENTA-LIKE6 Act Redundantly to Regulate Arabidopsis Floral Growth and Patterning

Author:
Krizek, BethA.
Source:
Plant physiology 2009 v.150 no.4 pp. 1916-1929
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; auxins; flowering; flowers; gene expression; genes; mutants; shoot meristems; transcription factors
Abstract:
... An Arabidopsis (Arabidopsis thaliana) flower consists of four types of organs arranged in a stereotypical pattern. This complex floral structure is elaborated from a small number of floral meristem cells partitioned from the shoot apical meristem during reproductive development. The positioning of floral primordia within the periphery of the shoot apical meristem depends on transport of the phytoh ...
DOI:
10.1104/pp.109.141119
PubMed:
19542297

14. Abscisic Acid Has a Key Role in Modulating Diverse Plant-Pathogen Interactions

Author:
Fan, Jun; Hill, Lionel; Crooks, Casey; Doerner, Peter; Lamb, Chris
Source:
Plant physiology 2009 v.150 no.4 pp. 1750-1761
ISSN:
0032-0889
Subject:
Alternaria brassicicola; Arabidopsis thaliana; Pseudomonas syringae; abscisic acid; disease resistance; fungi; gene overexpression; genes; jasmonic acid; microbial growth; salicylic acid; systemic acquired resistance; transfer DNA; water stress
Abstract:
... We isolated an activation-tagged Arabidopsis (Arabidopsis thaliana) line, constitutive disease susceptibility2-1D (cds2-1D), that showed enhanced bacterial growth when challenged with various Pseudomonas syringae strains. Systemic acquired resistance and systemic PATHOGENESIS-RELATED GENE1 induction were also compromised in cds2-1D. The T-DNA insertion adjacent to NINE-CIS-EPOXYCAROTENOID DIOXYGEN ...
DOI:
10.1104/pp.109.137943
PubMed:
19571312

15. Apple Sucrose Transporter SUT1 and Sorbitol Transporter SOT6 Interact with Cytochrome b5 to Regulate Their Affinity for Substrate Sugars

Author:
Fan, Ren-Chun; Peng, Chang-Cao; Xu, Yan-Hong; Wang, Xiao-Fang; Li, Yan; Shang, Yi; Du, Shu-Yuan; Zhao, Rui; Zhang, Xiao-Yan; Zhang, Ling-Yun; Zhang, Da-Peng
Source:
Plant physiology 2009 v.150 no.4 pp. 1880-1901
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; Malus domestica; Saccharomyces cerevisiae; apples; fluorescence; plasma membrane; point mutation; proline; sorbitol; sucrose; transporters; yeasts
Abstract:
... Sugar transporters are central machineries to mediate cross-membrane transport of sugars into the cells, and sugar availability may serve as a signal to regulate the sugar transporters. However, the mechanisms of sugar transport regulation by signal sugar availability remain unclear in plant and animal cells. Here, we report that a sucrose transporter, MdSUT1, and a sorbitol transporter, MdSOT6, b ...
DOI:
10.1104/pp.109.141374
PubMed:
19502355

16. BT2, a BTB Protein, Mediates Multiple Responses to Nutrients, Stresses, and Hormones in Arabidopsis

Author:
Mandadi, Kranthi K.; Misra, Anjali; Ren, Shuxin; McKnight, Thomas D.
Source:
Plant physiology 2009 v.150 no.4 pp. 1930-1939
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; abscisic acid; auxins; circadian rhythm; gene expression; genes; germination; hormones; hypersensitive response; leaves; messenger RNA; mutants; nitrogen; nutrients; plant response; proteins; sugars
Abstract:
... The Arabidopsis (Arabidopsis thaliana) gene BT2 encodes a 41-kD protein that possesses an amino-terminal BTB domain, a central TAZ domain, and a carboxyl-terminal calmodulin-binding domain. We previously demonstrated that BT2 could activate telomerase expression in mature Arabidopsis leaves. Here, we report its distinct role in mediating diverse hormone, stress, and metabolic responses. We serendi ...
DOI:
10.1104/pp.109.139220
PubMed:
19525324

17. Comparative Large-Scale Analysis of Interactions between Several Crop Species and the Effector Repertoires from Multiple Pathovars of Pseudomonas and Ralstonia

Author:
Wroblewski, Tadeusz; Caldwell, Katherine S.; Piskurewicz, Urszula; Cavanaugh, Keri A.; Xu, Huaqin; Kozik, Alexander; Ochoa, Oswaldo; McHale, Leah K.; Lahre, Kirsten; Jelenska, Joanna; Castillo, Jose A.; Blumenthal, Daniel; Vinatzer, Boris A.; Greenberg, Jean T.; Michelmore, Richard W.
Source:
Plant physiology 2009 v.150 no.4 pp. 1733-1749
ISSN:
0032-0889
Subject:
tomatoes; Solanum lycopersicum; necrosis; Lactuca sativa; host plants; plant pathogens; Ralstonia; type III secretion system; genes; genotype; lettuce; Pseudomonas; Agrobacterium; hypersensitive response; crops
Abstract:
... Bacterial plant pathogens manipulate their hosts by injection of numerous effector proteins into host cells via type III secretion systems. Recognition of these effectors by the host plant leads to the induction of a defense reaction that often culminates in a hypersensitive response manifested as cell death. Genes encoding effector proteins can be exchanged between different strains of bacteria v ...
DOI:
10.1104/pp.109.140251
PubMed:
19571308

18. Dissection of Bacterial Wilt on Medicago truncatula Revealed Two Type III Secretion System Effectors Acting on Root Infection Process and Disease Development

Author:
Turner, Marie; Jauneau, Alain; Genin, Stéphane; Tavella, Marie-José; Vailleau, Fabienne; Gentzbittel, Laurent; Jardinaud, Marie-Françoise
Source:
Plant physiology 2009 v.150 no.4 pp. 1713-1722
ISSN:
0032-0889
Subject:
root tips; wilting; bacterial wilt; hosts; genetic background; root inoculation; pathogenicity; type III secretion system; mutants; Ralstonia solanacearum; Medicago truncatula
Abstract:
... Ralstonia solanacearum is the causal agent of the devastating bacterial wilt disease, which colonizes susceptible Medicago truncatula via the intact root tip. Infection involves four steps: appearance of root tip symptoms, root tip cortical cell invasion, vessel colonization, and foliar wilting. We examined this pathosystem by in vitro inoculation of intact roots of susceptible or resistant M. tru ...
DOI:
10.1104/pp.109.141523
PubMed:
19493968

19. A Dynamic Interface for Capsaicinoid Systems Biology

Author:
Mazourek, Michael; Pujar, Anuradha; Borovsky, Yelena; Paran, Ilan; Mueller, Lukas; Jahn, Molly M.
Source:
Plant physiology 2009 v.150 no.4 pp. 1806-1821
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; Capsicum; alkaloids; amino acid metabolism; biosynthesis; chromosome mapping; databases; dynamic models; enzymes; fatty acids; genomics; hot peppers; loci; mutants; pepper; phenotype; phenylpropanoids; structural genes
Abstract:
... Capsaicinoids are the pungent alkaloids that give hot peppers (Capsicum spp.) their spiciness. While capsaicinoids are relatively simple molecules, much is unknown about their biosynthesis, which spans diverse metabolisms of essential amino acids, phenylpropanoids, benzenoids, and fatty acids. Pepper is not a model organism, but it has access to the resources developed in model plants through comp ...
DOI:
10.1104/pp.109.136549
PubMed:
19553373

20. Evidence for Variation in the Optimal Translation Initiation Complex: Plant eIF4B, eIF4F, and eIF(iso)4F Differentially Promote Translation of mRNAs

Author:
Mayberry, Laura K.; Allen, M. Leah; Dennis, Michael D.; Browning, Karen S.
Source:
Plant physiology 2009 v.150 no.4 pp. 1844-1854
ISSN:
0032-0889
Subject:
Alfalfa mosaic virus; Arabidopsis thaliana; Avena sativa; Hordeum vulgare; Tobacco necrosis virus; Triticum aestivum; Zea mays; alcohol dehydrogenase; barley; binding proteins; corn; globulins; heat shock proteins; light scattering; messenger RNA; oats; rabbits; ribosomal RNA; wheat; wheat germ
Abstract:
... Eukaryotic initiation factor (eIF) 4B is known to interact with multiple initiation factors, mRNA, rRNA, and poly(A) binding protein (PABP). To gain a better understanding of the function of eIF4B, the two isoforms from Arabidopsis (Arabidopsis thaliana) were expressed and analyzed using biophysical and biochemical methods. Plant eIF4B was found by ultracentrifugation and light scattering analysis ...
DOI:
10.1104/pp.109.138438
PubMed:
19493973

21. HORMONOMETER: A Tool for Discerning Transcript Signatures of Hormone Action in the Arabidopsis Transcriptome

Author:
Volodarsky, Dina; Leviatan, Noam; Otcheretianski, Andrei; Fluhr, Robert
Source:
Plant physiology 2009 v.150 no.4 pp. 1796-1805
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; genes; hormones; mutants; physiological state; plant adaptation; plant hormones; transcriptome
Abstract:
... Plant hormones regulate growth and responses to environmental change. Hormone action ultimately modifies cellular physiological processes and gene activity. To facilitate transcriptome evaluation of novel mutants and environmental responses, there is a need to rapidly assess the possible contribution of hormone action to changes in the levels of gene transcripts. We developed a vector-based algori ...
DOI:
10.1104/pp.109.138289
PubMed:
19535475

22. In Vivo Cell Wall Loosening by Hydroxyl Radicals during Cress Seed Germination and Elongation Growth

Author:
Müller, Kerstin; Linkies, Ada; Vreeburg, Robert A.M.; Fry, Stephen C.; Krieger-Liszkay, Anja; Leubner-Metzger, Gerhard
Source:
Plant physiology 2009 v.150 no.4 pp. 1855-1865
ISSN:
0032-0889
Subject:
seed germination; coleoptiles; Zea mays; seedling growth; hydroxyl radicals; polysaccharides; cell walls; seedlings; corn; electron paramagnetic resonance spectroscopy; endosperm; ripening; abscisic acid; Lepidium sativum; processing stages; hormones
Abstract:
... Loosening of cell walls is an important developmental process in key stages of the plant life cycle, including seed germination, elongation growth, and fruit ripening. Here, we report direct in vivo evidence for hydroxyl radical (·OH)-mediated cell wall loosening during plant seed germination and seedling growth. We used electron paramagnetic resonance spectroscopy to show that ·OH is generated in ...
DOI:
10.1104/pp.109.139204
PubMed:
19493972

23. The Magnesium-Chelatase H Subunit Binds Abscisic Acid and Functions in Abscisic Acid Signaling: New Evidence in Arabidopsis

Author:
Wu, Fu-Qing; Xin, Qi; Cao, Zheng; Liu, Zhi-Qiang; Du, Shu-Yuan; Mei, Chao; Zhao, Chen-Xi; Wang, Xiao-Fang; Shang, Yi; Jiang, Tao; Zhang, Xiao-Feng; Yan, Lu; Zhao, Rui; Cui, Zi-Ning; Liu, Rui; Sun, Hai-Li; Yang, Xin-Ling; Su, Zhen; Zhang, Da-Peng
Source:
Plant physiology 2009 v.150 no.4 pp. 1940-1954
ISSN:
0032-0889
Subject:
seedling growth; alleles; chromatography; receptors; phenotype; jasmonic acid; amino acids; esters; naphthaleneacetic acid; Arabidopsis thaliana; magnesium chelatase; stomatal movement; antagonists; indole acetic acid; seed germination; green fluorescent protein; hypersensitivity; mutants; abscisic acid; agonists; point mutation
Abstract:
... Using a newly developed abscisic acid (ABA)-affinity chromatography technique, we showed that the magnesium-chelatase H subunit ABAR/CHLH (for putative abscisic acid receptor/chelatase H subunit) specifically binds ABA through the C-terminal half but not the N-terminal half. A set of potential agonists/antagonists to ABA, including 2-trans,4-trans-ABA, gibberellin, cytokinin-like regulator 6-benzy ...
DOI:
10.1104/pp.109.140731
PubMed:
19535472

24. Metabolic Pathways Involved in Cold Acclimation Identified by Integrated Analysis of Metabolites and Transcripts Regulated by DREB1A and DREB2A

Author:
Maruyama, Kyonoshin; Takeda, Migiwa; Kidokoro, Satoshi; Yamada, Kohji; Sakuma, Yoh; Urano, Kaoru; Fujita, Miki; Yoshiwara, Kyouko; Matsukura, Satoko; Morishita, Yoshihiko; Sasaki, Ryosuke; Suzuki, Hideyuki; Saito, Kazuki; Shibata, Daisuke; Shinozaki, Kazuo; Yamaguchi-Shinozaki, Kazuko
Source:
Plant physiology 2009 v.150 no.4 pp. 1972-1980
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; acclimation; biochemical pathways; carbohydrate metabolism; cold; enzymes; freezing; gene expression; genes; metabolites; monosaccharides; stress tolerance; sucrose; sugar alcohols; transcription factors; transgenic plants; trisaccharides
Abstract:
... DREB1A/CBF3 and DREB2A are transcription factors that specifically interact with a cis-acting dehydration-responsive element (DRE), which is involved in cold- and dehydration-responsive gene expression in Arabidopsis (Arabidopsis thaliana). Overexpression of DREB1A improves stress tolerance to both freezing and dehydration in transgenic plants. In contrast, overexpression of an active form of DREB ...
DOI:
10.1104/pp.109.135327
PubMed:
19502356

25. More Productive Than Maize in the Midwest: How Does Miscanthus Do It?

Author:
Dohleman, Frank G.; Long, Stephen P.
Source:
Plant physiology 2009 v.150 no.4 pp. 2104-2115
ISSN:
0032-0889
Subject:
Miscanthus giganteus; Zea mays; aboveground biomass; canopy; carboxylation; corn; crops; cultivars; growing season; leaf area; leaves; photosynthesis; solar radiation; United States
Abstract:
... In the first side-by-side large-scale trials of these two C₄ crops in the U.S. Corn Belt, Miscanthus (Miscanthus x giganteus) was 59% more productive than grain maize (Zea mays). Total productivity is the product of the total solar radiation incident per unit land area and the efficiencies of light interception (εi) and its conversion into aboveground biomass (εca). Averaged over two growing seaso ...
DOI:
10.1104/pp.109.139162
PubMed:
19535474

26. Negative Regulation of Systemic Acquired Resistance by Replication Factor C Subunit3 in Arabidopsis

Author:
Xia, Shitou; Zhu, Zhaohai; Hao, Lin; Chen, Jin-Gui; Xiao, Langtao; Zhang, Yuelin; Li, Xin
Source:
Plant physiology 2009 v.150 no.4 pp. 2009-2017
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; cell proliferation; chromatin; clones; corolla; eukaryotic cells; gene expression; gene induction; leaves; mutants; pathogens; plant response; regulator genes; roots; salicylic acid; screening; systemic acquired resistance; yeasts
Abstract:
... Systemic acquired resistance (SAR) is a plant immune response induced by local necrotizing pathogen infections. Expression of SAR in Arabidopsis (Arabidopsis thaliana) plants correlates with accumulation of salicylic acid (SA) and up-regulation of Pathogenesis-Related (PR) genes. SA is an essential and sufficient signal for SAR. In a genetic screen to search for negative regulators of PR gene expr ...
DOI:
10.1104/pp.109.138321
PubMed:
19482917

27. A Novel Cation-Dependent O-Methyltransferase Involved in Anthocyanin Methylation in Grapevine

Author:
Hugueney, Philippe; Provenzano, Sofia; Verriès, Clotilde; Ferrandino, Alessandra; Meudec, Emmanuelle; Batelli, Giorgia; Merdinoglu, Didier; Cheynier, Véronique; Schubert, Andrea; Ageorges, Agnès
Source:
Plant physiology 2009 v.150 no.4 pp. 2057-2070
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; Nicotiana benthamiana; Vitis vinifera; anthocyanins; biosynthesis; cations; cultivars; cytoplasm; enzymes; grapes; leaves; methylation; recombinant proteins; ripening; small fruits; tobacco; transcription factors
Abstract:
... Anthocyanins are major pigments in colored grape (Vitis vinifera) berries, and most of them are monomethoxylated or dimethoxylated. We report here the functional characterization of an anthocyanin O-methyltransferase (AOMT) from grapevine. The expression pattern in two cultivars with different anthocyanin methylation profiles (Syrah and Nebbiolo) showed a peak at start ripening (véraison), when th ...
DOI:
10.1104/pp.109.140376
PubMed:
19525322

28. A Novel Red Clover Hydroxycinnamoyl Transferase Has Enzymatic Activities Consistent with a Role in Phaselic Acid Biosynthesis

Author:
Sullivan, MichaelL.
Source:
Plant physiology 2009 v.150 no.4 pp. 1866-1879
ISSN:
0032-0889
Subject:
Escherichia coli; Medicago sativa; Trifolium pratense; acids; alfalfa; amino acid sequences; amino acids; biosynthesis; catechol oxidase; enzyme activity; esters; forage crops; genes; leaves; messenger RNA; nitrogen; oxidation; sequence analysis; stems; storage proteins
Abstract:
... Red clover (Trifolium pratense) leaves accumulate several μmol g⁻¹ fresh weight of phaselic acid [2-O-(caffeoyl)-L-malate]. Postharvest oxidation of such o-diphenols to o-quinones by endogenous polyphenol oxidases prevents breakdown of forage protein during storage. Forage crops like alfalfa (Medicago sativa) lack both polyphenol oxidase and o-diphenols, and breakdown of their protein upon harvest ...
DOI:
10.1104/pp.109.136689
PubMed:
19525325

29. ROOT UV-B SENSITIVE2 Acts with ROOT UV-B SENSITIVE1 in a Root Ultraviolet B-Sensing Pathway

Author:
Leasure, Colin D.; Tong, Hongyun; Yuen, Gigi; Hou, Xuewen; Sun, Xuefeng; He, Zheng-Hui
Source:
Plant physiology 2009 v.150 no.4 pp. 1902-1915
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; Oryza sativa; Physcomitrella patens; animals; genes; morphogenesis; mosses and liverworts; mutants; phenotype; photoreceptors; protein-protein interactions; proteins; rice; roots; seedlings; seeds; site-directed mutagenesis; ultraviolet radiation; yeasts
Abstract:
... Ultraviolet B light (UV-B; 280-320 nm) perception and signaling are well-known phenomena in plants, although no specific UV-B photoreceptors have yet been identified. We previously reported on the root UV-B sensitive1 (rus1) mutants in Arabidopsis (Arabidopsis thaliana), which display a block to development under very-low-fluence-rate UV-B (<0.1 μmol m⁻² s⁻¹) after the seedling emerges from the se ...
DOI:
10.1104/pp.109.139253
PubMed:
19515790

30. Resistance to the Pseudomonas syringae Effector HopA1 Is Governed by the TIR-NBS-LRR Protein RPS6 and Is Enhanced by Mutations in SRFR1

Author:
Kim, Sang Hee; Kwon, Soon Il; Saha, Dipanwita; Anyanwu, Nkemdi C.; Gassmann, Walter
Source:
Plant physiology 2009 v.150 no.4 pp. 1723-1732
ISSN:
0032-0889
Subject:
Albugo candida; Arabidopsis thaliana; Pseudomonas syringae; amino acid sequences; binding sites; clones; disease resistance; genes; immunity; mutants; mutation; pathogens; proteins
Abstract:
... The Pseudomonas syringae-Arabidopsis (Arabidopsis thaliana) interaction is an extensively studied plant-pathogen system. Arabidopsis possesses approximately 150 putative resistance genes encoding nucleotide binding site (NBS) and leucine-rich repeat (LRR) domain-containing proteins. The majority of these belong to the Toll/Interleukin-1 receptor (TIR)-NBS-LRR (TNL) class. Comparative studies with ...
DOI:
10.1104/pp.109.139238
PubMed:
19525323

31. Transcriptional Gene Silencing Mediated by a Plastid Inner Envelope Phosphoenolpyruvate/Phosphate Translocator CUE1 in Arabidopsis

Author:
Shen, Jie; Ren, Xiaozhi; Cao, Rui; Liu, Jun; Gong, Zhizhong
Source:
Plant physiology 2009 v.150 no.4 pp. 1990-1996
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; DNA methylation; alleles; binding proteins; chlorophyll; gene silencing; kanamycin kinase; loci; luciferase; mutation; phosphates; reporter genes
Abstract:
... Mutations in REPRESSOR OF SILENCING1 (ROS1) lead to the transcriptional gene silencing (TGS) of ProRD₂₉A:LUC (LUCIFERASE) and Pro₃₅S:NPTII (Neomycin Phosphotransferase II) reporter genes. We performed a genetic screen to find suppressors of ros1 that identified two mutant alleles in the Arabidopsis (Arabidopsis thaliana) CHLOROPHYLL A/B BINDING PROTEIN UNDEREXPRESSED1 (CUE1) gene, which encodes a ...
DOI:
10.1104/pp.109.139626
PubMed:
19515789

32. Truffles Regulate Plant Root Morphogenesis via the Production of Auxin and Ethylene

Author:
Splivallo, Richard; Fischer, Urs; Göbel, Cornelia; Feussner, Ivo; Karlovsky, Petr
Source:
Plant physiology 2009 v.150 no.4 pp. 2018-2029
ISSN:
0032-0889
Subject:
1-aminocyclopropane-1-carboxylic acid; Arabidopsis thaliana; Cistus; branching; ethylene; ethylene production; hormones; host plants; indole acetic acid; metabolites; morphogenesis; mycelium; plant architecture; root growth; root hairs; root meristems
Abstract:
... Truffles are symbiotic fungi that form ectomycorrhizas with plant roots. Here we present evidence that at an early stage of the interaction, i.e. prior to physical contact, mycelia of the white truffle Tuber borchii and the black truffle Tuber melanopsorum induce alterations in root morphology of the host Cistus incanus and the nonhost Arabidopsis (Arabidopsis thaliana; i.e. primary root shortenin ...
DOI:
10.1104/pp.109.141325
PubMed:
19535471

33. Abnormal Chloroplast Development and Growth Inhibition in Rice Thioredoxin m Knock-Down Plants

Author:
Chi, Yong Hun; Moon, Jeong Chan; Park, Jin Ho; Kim, Ho-Seung; Zulfugarov, Ismayil S.; Fanata, Wahyu Indra; Jang, Ho Hee; Lee, Jung Ro; Lee, Young Mee; Kim, Sun Tae; Chung, Yong-Yoon; Lim, Chae Oh; Kim, Jae-Yean; Yun, Dae-Jin; Lee, Choon-Hwan; Lee, Kyun Oh; Lee, Sang Yeol
Source:
Plant physiology 2008 v.148 no.2 pp. 808-817
ISSN:
0032-0889
Subject:
Oryza sativa; RNA interference; abnormal development; chlorophyll; gene expression; growth and development; hydrogen peroxide; insulin; leaves; light intensity; messenger RNA; peroxiredoxin; photosynthesis; plant development; recombinant proteins; rice; substrate specificity
Abstract:
... Plant cells contain several thioredoxin isoforms that are characterized by subcellular localization and substrate specificity. Here, we describe the functional characterization of a rice (Oryza sativa) thioredoxin m isoform (Ostrxm) using a reverse genetics technique. Ostrxm showed green tissue-specific and light-responsive mRNA expression. Ostrxm was localized in chloroplasts of rice mesophyll ce ...
DOI:
10.1104/pp.108.123547
PubMed:
18723667

34. Acceleration of Flowering during Shade Avoidance in Arabidopsis Alters the Balance between FLOWERING LOCUS C-Mediated Repression and Photoperiodic Induction of Flowering

Author:
Wollenberg, Amanda C.; Strasser, Bárbara; Cerdán, Pablo D.; Amasino, Richard M.
Source:
Plant physiology 2008 v.148 no.3 pp. 1681-1694
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; cold; flowering; genes; loci; models; phytochrome; vernalization
Abstract:
... The timing of the floral transition in Arabidopsis (Arabidopsis thaliana) is influenced by a number of environmental signals. Here, we have focused on acceleration of flowering in response to vegetative shade, a condition that is perceived as a decrease in the ratio of red to far-red radiation. We have investigated the contributions of several known flowering-time pathways to this acceleration. Th ...
DOI:
10.1104/pp.108.125468
PubMed:
18790998

35. Amino Acid Polymorphisms in Strictly Conserved Domains of a P-Type ATPase HMA5 Are Involved in the Mechanism of Copper Tolerance Variation in Arabidopsis

Author:
Kobayashi, Yuriko; Kuroda, Keishi; Kimura, Keisuke; Southron-Francis, Jennafer L.; Furuzawa, Aya; Kimura, Kazuhiko; Iuchi, Satoshi; Kobayashi, Masatomo; Taylor, Gregory J.; Koyama, Hiroyuki
Source:
Plant physiology 2008 v.148 no.2 pp. 969-980
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; adenosinetriphosphatase; alleles; amino acid sequences; amino acid substitution; asparagine; chromosomes; islands; mutants; phenotypic variation; plant nutrition; proline; proteins; quantitative trait loci; root growth; roots; shoots; transfer DNA; yeasts; Cape Verde
Abstract:
... Copper (Cu) is an essential element in plant nutrition, but it inhibits the growth of roots at low concentrations. Accessions of Arabidopsis (Arabidopsis thaliana) vary in their tolerance to Cu. To understand the molecular mechanism of Cu tolerance in Arabidopsis, we performed quantitative trait locus (QTL) analysis and accession studies. One major QTL on chromosome 1 (QTL1) explained 52% of the p ...
DOI:
10.1104/pp.108.119933
PubMed:
18701674

36. Arabidopsis CLP1-SIMILAR PROTEIN3, an Ortholog of Human Polyadenylation Factor CLP1, Functions in Gametophyte, Embryo, and Postembryonic Development

Author:
Xing, Denghui; Zhao, Hongwei; Li, Qingshun Quinn
Source:
Plant physiology 2008 v.148 no.4 pp. 2059-2069
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; embryogenesis; flowering; flowers; gametophytes; gene expression; genes; humans; messenger RNA; mutants; phenotype; phyllotaxy; yeasts
Abstract:
... Polyadenylation factor CLP1 is essential for mRNA 3'-end processing in yeast and mammals. The Arabidopsis (Arabidopsis thaliana) CLP1-SIMILAR PROTEIN3 (CLPS3) is an ortholog of human hCLP1. CLPS3 was previously found to be a subunit in the affinity-purified PCFS4-TAP (tandem affinity purification) complex involved in the alternative polyadenylation of FCA and flowering time control in Arabidopsis. ...
DOI:
10.1104/pp.108.129817
PubMed:
18971429

37. The Arabidopsis Calcium Sensor Calcineurin B-Like 3 Inhibits the 5'-Methylthioadenosine Nucleosidase in a Calcium-Dependent Manner

Author:
Oh, Seung-Ick; Park, Jimyeong; Yoon, Sunhee; Kim, Yungyeong; Park, Soojin; Ryu, Migyeong; Nam, Min Jung; Ok, Sung Han; Kim, Jeong-Kook; Shin, Jeong-Sheop; Kim, Kyung-Nam
Source:
Plant physiology 2008 v.148 no.4 pp. 1883-1896
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; proteins; plant development; protein kinases; complementary DNA; calcium; stress response; yeasts; ethylene production; clones; abiotic stress; screening; Escherichia coli
Abstract:
... Calcineurin B-like (CBL) proteins represent a unique family of calcium sensors in plant cells. Sensing the calcium signals elicited by a variety of abiotic stresses, CBLs transmit the information to a group of serine/threonine protein kinases (CBL-interacting protein kinases [CIPKs]), which are currently known as the sole targets of the CBL family. Here, we report that the CBL3 member of this fami ...
DOI:
10.1104/pp.108.130419
PubMed:
18945934

38. Arabidopsis Casein Kinase 1-Like 6 Contains a Microtubule-Binding Domain and Affects the Organization of Cortical Microtubules

Author:
Ben-Nissan, Gili; Cui, Weier; Kim, Dong-Jin; Yang, Yaodong; Yoo, Byung-Chun; Lee, Jung-Youn
Source:
Plant physiology 2008 v.148 no.4 pp. 1897-1907
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; casein; cell growth; microtubules; phosphorylation; protein kinases; subcellular fractions; tubulin
Abstract:
... Members of the casein kinase 1 (CK1) family are evolutionarily conserved eukaryotic protein kinases that are involved in various cellular, physiological, and developmental processes in yeast and metazoans, but the biological roles of CK1 members in plants are not well understood. Here, we report that an Arabidopsis (Arabidopsis thaliana) CK1 member named casein kinase 1-like 6 (CKL6) associates wi ...
DOI:
10.1104/pp.108.129346
PubMed:
18945931

39. Arabidopsis Transcriptome Reveals Control Circuits Regulating Redox Homeostasis and the Role of an AP2 Transcription Factor

Author:
Khandelwal, Abha; Elvitigala, Thanura; Ghosh, Bijoy; Quatrano, Ralph S.
Source:
Plant physiology 2008 v.148 no.4 pp. 2050-2058
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; abscisic acid; biochemical pathways; environmental factors; homeostasis; multigene family; photosystem II; plant development; stress response; transcription factors; transcriptome; transfer DNA
Abstract:
... Sensors and regulatory circuits that maintain redox homeostasis play a central role in adjusting plant metabolism and development to changing environmental conditions. We report here control networks in Arabidopsis (Arabidopsis thaliana) that respond to photosynthetic stress. We independently subjected Arabidopsis leaves to two commonly used photosystem II inhibitors: high light (HL) and 3-(3,4-di ...
DOI:
10.1104/pp.108.128488
PubMed:
18829981

40. The AtrbohD-Mediated Oxidative Burst Elicited by Oligogalacturonides in Arabidopsis Is Dispensable for the Activation of Defense Responses Effective against Botrytis cinerea

Author:
Galletti, Roberta; Denoux, Carine; Gambetta, Stefano; Dewdney, Julia; Ausubel, Frederick M.; De Lorenzo, Giulia; Ferrari, Simone
Source:
Plant physiology 2008 v.148 no.3 pp. 1695-1706
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; Botrytis cinerea; NADP (coenzyme); callose; cell walls; ethylene; gene expression; pathogens; pectins; powdery mildew; reactive oxygen species; salicylic acid
Abstract:
... Oligogalacturonides (OGs) are endogenous elicitors of defense responses released after partial degradation of pectin in the plant cell wall. We have previously shown that, in Arabidopsis (Arabidopsis thaliana), OGs induce the expression of PHYTOALEXIN DEFICIENT3 (PAD3) and increase resistance to the necrotrophic fungal pathogen Botrytis cinerea independently of signaling pathways mediated by jasmo ...
DOI:
10.1104/pp.108.127845
PubMed:
18790995

41. BAH1/NLA, a RING-Type Ubiquitin E3 Ligase, Regulates the Accumulation of Salicylic Acid and Immune Responses to Pseudomonas syringae DC3000

Author:
Yaeno, Takashi; Iba, Koh
Source:
Plant physiology 2008 v.148 no.2 pp. 1032-1041
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; Nicotiana benthamiana; Pseudomonas syringae pv. tomato; benzoic acid; biochemical pathways; cell death; gene expression; immune response; mutants; mutation; pathogens; phenotype; plant response; salicylic acid; tobacco; tomatoes; transfer DNA; ubiquitin
Abstract:
... Salicylic acid (SA) is a primary factor responsible for exerting diverse immune responses in plants and is synthesized in response to attack by a wide range of pathogens. The Arabidopsis (Arabidopsis thaliana) sid2 mutant is defective in a SA biosynthetic pathway involving ISOCHORISMATE SYNTHASE1 (ICS1) and consequently contains reduced levels of SA. However, the sid2 mutant as well as ICS-suppres ...
DOI:
10.1104/pp.108.124529
PubMed:
18753285

42. Characterization of Cytokinin and Adenine Transport in Arabidopsis Cell Cultures

Author:
Cedzich, Anna; Stransky, Harald; Schulz, Burkhard; Frommer, Wolf B.
Source:
Plant physiology 2008 v.148 no.4 pp. 1857-1867
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; adenine; allantoin; cell culture; chemical inhibitors; cultured cells; cyanides; cytokinins; cytosol; enzymes; kinetics; metabolism; plasma membrane; seedlings; signal transduction; substrate specificity; zeatin
Abstract:
... Cytokinins are distributed through the vascular system and trigger responses of target cells via receptor-mediated signal transduction. Perception and transduction of the signal can occur at the plasma membrane or in the cytosol. The signal is terminated by the action of extra- or intracellular cytokinin oxidases. While radiotracer studies have been used to study transport and metabolism of cytoki ...
DOI:
10.1104/pp.108.128454
PubMed:
18835995

43. Characterization of OsbZIP23 as a Key Player of the Basic Leucine Zipper Transcription Factor Family for Conferring Abscisic Acid Sensitivity and Salinity and Drought Tolerance in Rice

Author:
Xiang, Yong; Tang, Ning; Du, Hao; Ye, Haiyan; Xiong, Lizhong
Source:
Plant physiology 2008 v.148 no.4 pp. 1938-1952
ISSN:
0032-0889
Subject:
Allium cepa; Oryza sativa; abscisic acid; amino acids; drought; drought tolerance; genes; genetic improvement; leucine zipper; mutants; nuclear proteins; onions; phenotype; polyethylene glycol; polymerase chain reaction; rice; salt tolerance; salts; stress response; stress tolerance; transcription factors; transcriptional activation; water stress; yeasts
Abstract:
... OsbZIP23 is a member of the basic leucine zipper (bZIP) transcription factor family in rice (Oryza sativa). Expression of OsbZIP23 is strongly induced by a wide spectrum of stresses, including drought, salt, abscisic acid (ABA), and polyethylene glycol treatments, while other stress-responsive genes of this family are slightly induced only by one or two of the stresses. Transactivation assay in ye ...
DOI:
10.1104/pp.108.128199
PubMed:
18931143

44. The Chloroplast DnaJ Homolog CDJ1 of Chlamydomonas reinhardtii Is Part of a Multichaperone Complex Containing HSP70B, CGE1, and HSP90C

Author:
Willmund, Felix; Dorn, Karolin V.; Schulz-Raffelt, Miriam; Schroda, Michael
Source:
Plant physiology 2008 v.148 no.4 pp. 2070-2082
ISSN:
0032-0889
Subject:
Chlamydomonas reinhardtii; Escherichia coli; fractionation; gel electrophoresis; genes; heat shock proteins; heat stress; molecular weight; mutants; phenotype; thylakoids
Abstract:
... We report on the molecular and biochemical characterization of CDJ1, one of three zinc-finger-containing J-domain proteins encoded by the Chlamydomonas reinhardtii genome. Fractionation experiments indicate that CDJ1 is a plastidic protein. In the chloroplast, CDJ1 was localized to the soluble stroma fraction, but also to thylakoids and to low density membranes. Although the CDJ1 gene was strongly ...
DOI:
10.1104/pp.108.127944
PubMed:
18931144

45. Comparative Analyses of Arabidopsis complex glycan1 Mutants and Genetic Interaction with staurosporin and temperature sensitive3a

Author:
Frank, Julia; Kaulfürst-Soboll, Heidi; Rips, Stephan; Koiwa, Hisashi; von Schaewen, Antje
Source:
Plant physiology 2008 v.148 no.3 pp. 1354-1367
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; Golgi apparatus; alleles; endoplasmic reticulum; mutants; point mutation; proteins; root growth; synergism; temperature; transfer DNA
Abstract:
... We compare three Arabidopsis (Arabidopsis thaliana) complex glycan1 (cgl1) alleles and report on genetic interaction with staurosporin and temperature sensitive3a (stt3a). STT3a encodes a subunit of oligosaccharyltransferase that affects efficiency of N-glycan transfer to nascent secretory proteins in the endoplasmic reticulum; cgl1 mutants lack N-acetyl-glucosaminyltransferase I activity and are ...
DOI:
10.1104/pp.108.127027
PubMed:
18768906

46. Complex I Dysfunction Redirects Cellular and Mitochondrial Metabolism in Arabidopsis

Author:
Garmier, Marie; Carroll, Adam J.; Delannoy, Etienne; Vallet, Corinne; Day, David A.; Small, Ian D.; Millar, A. Harvey
Source:
Plant physiology 2008 v.148 no.3 pp. 1324-1341
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; NAD (coenzyme); amino acids; cell death; cell growth; cell respiration; cell suspension culture; enzymes; gene expression; organic acids and salts; oxidation; oxidative phosphorylation; oxidative stress; proteome; rotenone; tricarboxylic acid cycle
Abstract:
... Mitochondrial complex I is a major avenue for reduced NAD oxidation linked to oxidative phosphorylation in plants. However, the plant enzyme has structural and functional features that set it apart from its counterparts in other organisms, raising questions about the physiological significance of this complex in plants. We have developed an experimental model in which rotenone, a classic complex I ...
DOI:
10.1104/pp.108.125880
PubMed:
18784283

47. The DEG15 Serine Protease Cleaves Peroxisomal Targeting Signal 2-Containing Proteins in Arabidopsis

Author:
Schuhmann, Holger; Huesgen, Pitter F.; Gietl, Christine; Adamska, Iwona
Source:
Plant physiology 2008 v.148 no.4 pp. 1847-1856
ISSN:
0032-0889
Subject:
Arabidopsis thaliana; aspartic acid; enzyme activity; eukaryotic cells; fluorescence microscopy; histidine; in vivo studies; knockout mutants; malate dehydrogenase; mammals; protein transport; proteins; serine; serine proteinases
Abstract:
... Two distinct peroxisomal targeting signals (PTSs), the C-terminal PTS1 and the N-terminal PTS2, are defined. Processing of the PTS2 on protein import is conserved in higher eukaryotes. Recently, candidates for the responsible processing protease were identified from plants (DEG15) and mammals (TYSND1). We demonstrate that plants lacking DEG15 show an expressed phenotype potentially linked to reduc ...
DOI:
10.1104/pp.108.125377
PubMed:
18952862

48. Differential Accumulation of Retroelements and Diversification of NB-LRR Disease Resistance Genes in Duplicated Regions following Polyploidy in the Ancestor of Soybean

Author:
Innes, Roger W.; Ameline-Torregrosa, Carine; Ashfield, Tom; Cannon, Ethalinda; Cannon, Steven B.; Chacko, Ben; Chen, Nicolas W.G.; Couloux, Arnaud; Dalwani, Anita; Denny, Roxanne; Deshpande, Shweta; Egan, Ashley N.; Glover, Natasha; Hans, Christian S.; Howell, Stacy; Ilut, Dan; Jackson, Scott; Lai, Hongshing; Mammadov, Jafar; del Campo, Sara Martin; Metcalf, Michelle; Nguyen, Ashley; O'Bleness, Majesta; Pfeil, Bernard E.; Podicheti, Ram; Ratnaparkhe, Milind B.; Samain, Sylvie; Sanders, Iryna; Ségurens, Béatrice; Sévignac, Mireille; Sherman-Broyles, Sue; Thareau, Vincent; Tucker, Dominic M.; Walling, Jason; Wawrzynski, Adam; Yi, Jing; Doyle, Jeff J.; Geffroy, Valérie; Roe, Bruce A.; Maroof, M.A. Saghai; Young, Nevin D.
Source:
Plant physiology 2008 v.148 no.4 pp. 1740-1759
ISSN:
0032-0889
Subject:
Glycine max; Glycine tomentella; Medicago truncatula; Phaseolus vulgaris; Zea mays; ancestry; disease resistance; fluorescence in situ hybridization; genotype; multigene family; polyploidy; soybeans
Abstract:
... The genomes of most, if not all, flowering plants have undergone whole genome duplication events during their evolution. The impact of such polyploidy events is poorly understood, as is the fate of most duplicated genes. We sequenced an approximately 1 million-bp region in soybean (Glycine max) centered on the Rpg1-b disease resistance gene and compared this region with a region duplicated 10 to 1 ...
DOI:
10.1104/pp.108.127902
PubMed:
18842825

49. Dynamic Proteomic Analysis Reveals a Switch between Central Carbon Metabolism and Alcoholic Fermentation in Rice Filling Grains

Author:
Xu, Sheng Bao; Li, Tang; Deng, Zhu Yun; Chong, Kang; Xue, Yongbiao; Wang, Tai
Source:
Plant physiology 2008 v.148 no.2 pp. 908-925
ISSN:
0032-0889
Subject:
filling period; proteins; protein synthesis; rice; cell growth; staple foods; Oryza sativa; alcoholic fermentation; developmental stages; proteolysis; signal transduction; starch; carbon; endosperm; cell differentiation; gene expression regulation; databases
Abstract:
... Accumulation of reserve materials in filling grains involves the coordination of different metabolic and cellular processes, and understanding the molecular mechanisms underlying the interconnections remains a major challenge for proteomics. Rice (Oryza sativa) is an excellent model for studying grain filling because of its importance as a staple food and the available genome sequence database. Ou ...
DOI:
10.1104/pp.108.125633
PubMed:
18753281

50. The Effect of Leaf-Level Spatial Variability in Photosynthetic Capacity on Biochemical Parameter Estimates Using the Farquhar Model: A Theoretical Analysis

Author:
Chen, Charles P.; Zhu, Xin-Guang; Long, Stephen P.
Source:
Plant physiology 2008 v.148 no.2 pp. 1139-1147
ISSN:
0032-0889
Subject:
crop production; electron transfer; gas exchange; leaves; mathematical models; photosynthesis; production technology; stomatal conductance
Abstract:
... Application of the widely used Farquhar model of photosynthesis in interpretation of gas exchange data assumes that photosynthetic properties are homogeneous throughout the leaf. Previous studies showed that heterogeneity in stomatal conductance (gs) across a leaf could affect the shape of the measured leaf photosynthetic CO₂ uptake rate (A) versus intercellular CO₂ concentration (Ci) response cur ...
DOI:
10.1104/pp.108.124024
PubMed:
18715955