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You searched for: Journal Journal of experimental botany Remove constraint Journal: Journal of experimental botany Publication Year 2009 Remove constraint Publication Year: 2009 Source 2009 v.60 no.13 Remove constraint Source: 2009 v.60 no.13
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1. A rapid transcriptional activation is induced by the dormancy-breaking chemical hydrogen cyanamide in kiwifruit (Actinidia deliciosa) buds

Author:
Walton, Eric F.; Wu, Rong-Mei; Richardson, Annette C.; Davy, Marcus; Hellens, Roger P.; Thodey, Kate; Janssen, Bart J.; Gleave, Andrew P.; Rae, Georgina M.; Wood, Marion; Schaffer, Robert J.
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3835-3848
ISSN:
0022-0957
Subject:
Actinidia deliciosa; budbreak; buds; dormancy breaking; gene expression; genes; genomics; glutathione transferase; hydrogen cyanamide; kiwifruit; phylogeny; stress response; transcriptional activation; vines; winter
Abstract:
... Budbreak in kiwifruit (Actinidia deliciosa) can be poor in locations that have warm winters with insufficient winter chilling. Kiwifruit vines are often treated with the dormancy-breaking chemical hydrogen cyanamide (HC) to increase and synchronize budbreak. This treatment also offers a tool to understand the processes involved in budbreak. A genomics approach is presented here to increase our und ...
DOI:
10.1093/jxb/erp231
PubMed:
19651683
PubMed Central:
PMC2736901

2. Are plant growth and photosynthesis limited by pre-drought following rewatering in grass?

Author:
Xu, Zhenzhu; Zhou, Guangsheng; Shimizu, Hideyuki
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3737-3749
ISSN:
0022-0957
Subject:
Leymus chinensis; biomass; climate change; drought; field capacity; grasses; grassland soils; irrigation; leaves; photosynthesis; plant growth; plant response; primary productivity; soil productivity status; soil water; soil water content; stomatal conductance
Abstract:
... Although the relationship between grassland productivity and soil water status has been extensively researched, the responses of plant growth and photosynthetic physiological processes to long-term drought and rewatering are not fully understood. Here, the perennial grass (Leymus chinensis), predominantly distributed in the Euro-Asia steppe, was used as an experimental plant for an irrigation mani ...
DOI:
10.1093/jxb/erp216
PubMed:
19596698
PubMed Central:
PMC2736889

3. Assimilation of xylem-transported ¹³C-labelled CO₂ in leaves and branches of sycamore (Platanus occidentalis L.)

Author:
McGuire, M.A.; Marshall, J.D.; Teskey, R.O.
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3809-3817
ISSN:
0022-0957
Subject:
solar radiation; transpiration; tree trunk; trees; carbon; photosynthesis; sap; petioles; branches; xylem; Platanus occidentalis
Abstract:
... Previous reports have shown that CO₂ dissolved in xylem sap in tree stems can move upward in the transpiration stream. To determine the fate of this dissolved CO₂, the internal transport of respired CO₂ at high concentration from the bole of the tree was simulated by allowing detached young branches of sycamore (Platanus occidentalis L.) to transpire water enriched with a known quantity of ¹³CO₂ i ...
DOI:
10.1093/jxb/erp222
PubMed:
19602545
PubMed Central:
PMC2736895

4. AtTRP1 encodes a novel TPR protein that interacts with the ethylene receptor ERS1 and modulates development in Arabidopsis

Author:
Lin, Zhefeng; Ho, Chin-Wen; Grierson, Don
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3697-3714
ISSN:
0022-0957
Subject:
tomatoes; ethylene; Arabidopsis; abscission; fruits; anthers; seedlings; vascular tissues; yeasts; models; plant fertility; gene expression; genes; leaves; etiolation; root growth; receptors; indole acetic acid
Abstract:
... Arabidopsis AtTRP1 is an orthologue of SlTPR1, a tomato tetratricopeptide repeat protein that interacts with the tomato ethylene receptors LeETR1 and NR in yeast 2-hybrid assays and in vitro, and modulates plant development. AtTRP1 is encoded by a single copy gene in the Arabidopsis genome, and is related to TCC1, a human protein that competes with Raf-1 for Ras binding, and distantly related to t ...
DOI:
10.1093/jxb/erp209
PubMed:
19567478
PubMed Central:
PMC2736885

5. Composite Medicago truncatula plants harbouring Agrobacterium rhizogenes-transformed roots reveal normal mycorrhization by Glomus intraradices

Author:
Mrosk, Cornelia; Forner, Susanne; Hause, Gerd; Küster, Helge; Kopka, Joachim; Hause, Bettina
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3797-3807
ISSN:
0022-0957
Subject:
vesicular arbuscular mycorrhizae; microarray technology; fluorescence; developmental stages; roots; shoots; reverse transcriptase polymerase chain reaction; Rhizobium rhizogenes; secondary metabolites; genes; genomics; Rhizophagus intraradices; legumes; Medicago truncatula; plant morphology; Agrobacterium; isoflavonoids; genetic markers; fungi
Abstract:
... Composite plants consisting of a wild-type shoot and a transgenic root are frequently used for functional genomics in legume research. Although transformation of roots using Agrobacterium rhizogenes leads to morphologically normal roots, the question arises as to whether such roots interact with arbuscular mycorrhizal (AM) fungi in the same way as wild-type roots. To address this question, roots t ...
DOI:
10.1093/jxb/erp220
PubMed:
19574251
PubMed Central:
PMC2736893

6. Creating S-type characteristics in the F-type enzyme fructan:fructan 1-fructosyltransferase of Triticum aestivum L

Author:
Schroeven, Lindsey; Lammens, Willem; Kawakami, Akira; Yoshida, Midori; Van Laere, André; Van den Ende, Wim
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3687-3696
ISSN:
0022-0957
Subject:
Triticum aestivum; enzyme substrates; enzymes; fructose; glucose; mutagenesis; substrate specificity; sucrose; wheat
Abstract:
... Invertases cleave sucrose in glucose and fructose, using water as an acceptor. Fructosyltransferases catalyse the transfer of a fructosyl residue between sucrose and/or fructan molecules. Plant fructosyltransferases (FTs) evolved from vacuolar invertases by small mutational changes, leading to differences in substrate specificity. The S-type of enzymes (invertases, sucrose:sucrose 1-fructosyltrans ...
DOI:
10.1093/jxb/erp208
PubMed:
19726634

7. Developmental changes and organelle biogenesis in the reproductive organs of thermogenic skunk cabbage (Symplocarpus renifolius)

Author:
Ito-Inaba, Yasuko; Sato, Mayuko; Masuko, Hiromi; Hida, Yamato; Toyooka, Kiminori; Watanabe, Masao; Inaba, Takehito
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3909-3922
ISSN:
0022-0957
Subject:
proteins; flowering; corolla; Symplocarpus; oxygen consumption; Arum; vacuoles; heat production; pollen; females
Abstract:
... Sex-dependent thermogenesis during reproductive organ development in the inflorescence is a characteristic feature of some of the protogynous arum species. One such plant, skunk cabbage (Symplocarpus renifolius), can produce massive heat during the female stage but not during the subsequent male stage in which the stamen completes development, the anthers dehisce, and pollen is released. Unlike ot ...
DOI:
10.1093/jxb/erp226
PubMed:
19640927
PubMed Central:
PMC2736897

8. Does night-time transpiration contribute to anisohydric behaviour in a Vitis vinifera cultivar?

Author:
Rogiers, Suzy Y.; Greer, Dennis H.; Hutton, Ron J.; Landsberg, Joe J.
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3751-3763
ISSN:
0022-0957
Subject:
Vitis vinifera; abscisic acid; correlation; electrolytes; environmental factors; leaf water potential; leaves; plastic bags; roots; sap; stomatal conductance; stomatal movement; vapor pressure; vines; wine cultivars; xylem
Abstract:
... The hypothesis that vines of the Semillon wine grape variety show anisohydric behaviour was tested, i.e. that tissue hydration is unstable under fluctuating environmental conditions. Stomatal conductance and transpiration rates from leaves were measured during the day and at night. Leaf water potential (Ψl) in Semillon was negatively correlated to vapour pressure deficit (VPD) both predawn and dur ...
DOI:
10.1093/jxb/erp217
PubMed:
19584116
PubMed Central:
PMC2736890

9. Enzymic characterization of two recombinant xyloglucan endotransglucosylase/hydrolase (XTH) proteins of Arabidopsis and their effect on root growth and cell wall extension

Author:
Maris, An; Suslov, Dmitry; Fry, Stephen C.; Verbelen, Jean-Pierre; Vissenberg, Kris
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3959-3972
ISSN:
0022-0957
Subject:
Arabidopsis thaliana; Pichia; cell growth; cell wall components; cell walls; hydrolases; proteins; rhizosphere; root growth; root hairs; sugars; xyloglucan:xyloglucosyl transferase
Abstract:
... Xyloglucan endotransglucosylase/hydrolases (XTHs) are enzymes involved in the modification of load-bearing cell wall components. They cleave xyloglucan chains and, often, re-form bonds to the non-reducing ends of available xyloglucan molecules in plant primary cell walls. The enzymic properties and effects on root growth of two Arabidopsis thaliana XTHs belonging to subgroup I/II, that are predomi ...
DOI:
10.1093/jxb/erp229
PubMed:
19635745

10. Ethylene receptor ETR2 controls trichome branching by regulating microtubule assembly in Arabidopsis thaliana

Author:
Plett, Jonathan M.; Mathur, Jaideep; Regan, Sharon
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3923-3933
ISSN:
0022-0957
Subject:
Arabidopsis thaliana; branching; chromatin; cytokinins; cytoskeleton; developmental stages; epistasis; ethylene; gene expression; gibberellic acid; hormones; mutants; receptors; salicylic acid; trichomes
Abstract:
... The single-celled trichome of Arabidopsis thaliana is a widely used model system for studying cell development. While the pathways that control the later stages of trichome development are well characterized, the early signalling events that co-ordinate these pathways are less well understood. Hormones such as gibberellic acid, salicylic acid, cytokinins, and ethylene are known to affect trichome ...
DOI:
10.1093/jxb/erp228
PubMed:
19648171
PubMed Central:
PMC2736899

11. Exploring the importance of within-canopy spatial temperature variation on transpiration predictions

Author:
Bauerle, William L.; Bowden, Joseph D.; Wang, G. Geoff; Shahba, Mohamed A.
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3665-3676
ISSN:
0022-0957
Subject:
Acer rubrum; acclimation; correlation; forest growth; forests; genotype; leaf area; leaves; microclimate; models; prediction; temperature; transpiration; trees
Abstract:
... Models seldom consider the effect of leaf-level biochemical acclimation to temperature when scaling forest water use. Therefore, the dependence of transpiration on temperature acclimation was investigated at the within-crown scale in climatically contrasting genotypes of Acer rubrum L., cv. October Glory (OG) and Summer Red (SR). The effects of temperature acclimation on intracanopy gradients in t ...
DOI:
10.1093/jxb/erp206
PubMed:
19561047
PubMed Central:
PMC2736884

12. Gene regulation in parthenocarpic tomato fruit

Author:
Martinelli, Federico; Uratsu, Sandra L.; Reagan, Russell L.; Chen, Ying; Tricoli, David; Fiehn, Oliver; Rocke, David M.; Gasser, Charles S.; Dandekar, Abhaya M.
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3873-3890
ISSN:
0022-0957
Subject:
Arabidopsis thaliana; amino acids; cell walls; fatty acids; fruit growing; fruits; hormone metabolism; indole acetic acid; lipid metabolism; metabolites; metabolomics; nutrition; parthenocarpy; protein synthesis; seeds; spectrometers; tomatoes; transgenes; transgenic plants
Abstract:
... Parthenocarpy is potentially a desirable trait for many commercially grown fruits if undesirable changes to structure, flavour, or nutrition can be avoided. Parthenocarpic transgenic tomato plants (cv MicroTom) were obtained by the regulation of genes for auxin synthesis (iaaM) or responsiveness (rolB) driven by DefH9 or the INNER NO OUTER (INO) promoter from Arabidopsis thaliana. Fruits at a brea ...
DOI:
10.1093/jxb/erp227
PubMed:
19700496
PubMed Central:
PMC2736898

13. Genome-wide analysis of the auxin-responsive transcriptome downstream of iaa1 and its expression analysis reveal the diversity and complexity of auxin-regulated gene expression

Author:
Lee, Dong Ju; Park, Jong Wha; Lee, Han Woo; Kim, Jungmook
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3935-3957
ISSN:
0022-0957
Subject:
F-box proteins; dexamethasone; gene expression; genes; indole acetic acid; mechanism of action; microarray technology; mutants; mutation; transcription factors; transcriptome
Abstract:
... The AUXIN RESPONSE FACTORs (ARFs) and the Aux/IAA proteins regulate various auxin responses through auxin perception mediated by the F-box proteins TIR1/AFBs. ARFs are transcription factors that modulate expression of auxin response genes and are negatively regulated by the Aux/IAA proteins. To gain insight into the regulatory mechanisms of Aux/IAA-ARF action at the genome level, the transcriptome ...
DOI:
10.1093/jxb/erp230
PubMed:
19654206
PubMed Central:
PMC2736900

14. Identification and localization of the bilitranslocase homologue in white grape berries (Vitis vinifera L.) during ripening

Author:
Bertolini, Alberto; Peresson, Carlo; Petrussa, Elisa; Braidot, Enrico; Passamonti, Sabina; Macrì, Francesco; Vianello, Angelo
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3861-3871
ISSN:
0022-0957
Subject:
Dianthus caryophyllus; Vitis vinifera; active transport; antibodies; bilirubin; corolla; cultivars; grapes; integument; liver; mesocarp; microsomes; molecular weight; pulp; quercetin; rats; ripening; seeds; small fruits; transporters; vascular bundles; vascular tissues
Abstract:
... A homologue of the mammalian bilirubin transporter bilitranslocase (BTL) (TCDB 2.A.65.1.1), able to perform an apparent secondary active transport of flavonoids, has previously been found in carnation petals and red grape berries. In the present work, a BTL homologue was also shown in white berries from Vitis vinifera L. cv. Tocai/Friulano, using anti-sequence antibodies specific for rat liver BTL ...
DOI:
10.1093/jxb/erp225
PubMed:
19596699
PubMed Central:
PMC2736896

15. Identification of candidate genes affecting Δ⁹-tetrahydrocannabinol biosynthesis in Cannabis sativa

Author:
Marks, M. David; Tian, Li; Wenger, Jonathan P.; Omburo, Stephanie N.; Soto-Fuentes, Wilfredo; He, Ji; Gang, David R.; Weiblen, George D.; Dixon, Richard A.
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3715-3726
ISSN:
0022-0957
Subject:
transcription factors; fatty acids; biosynthesis; quantitative analysis; Cannabis sativa; complementary DNA; naringenin-chalcone synthase; polymerase chain reaction; expressed sequence tags; metabolites; biochemical pathways; clones; cDNA libraries; RNA; leaves
Abstract:
... RNA isolated from the glands of a Δ⁹-tetrahydrocannabinolic acid (THCA)-producing strain of Cannabis sativa was used to generate a cDNA library containing over 100 000 expressed sequence tags (ESTs). Sequencing of over 2000 clones from the library resulted in the identification of over 1000 unigenes. Candidate genes for almost every step in the biochemical pathways leading from primary metabolites ...
DOI:
10.1093/jxb/erp210
PubMed:
19581347
PubMed Central:
PMC2736886

16. Lateral root emergence: a difficult birth

Author:
Péret, Benjamin; Larrieu, Antoine; Bennett, Malcolm J.
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3637-3643
ISSN:
0022-0957
Subject:
Arabidopsis thaliana; auxins; cell walls; enzymes; parturition; root primordia
Abstract:
... Lateral root initiation takes place deep within the parental root, requiring new primordia to break through the overlying tissues before they emerge into the soil. Lateral root emergence has been well described at the cellular level but, until recently, the molecular mechanisms involved were unclear. Scientists in the 19th and 20th centuries hypothesized that the cell wall of the overlying tissues ...
DOI:
10.1093/jxb/erp232
PubMed:
19635746

17. Low temperature induces different cold sensitivity in two poplar clones (Populusxcanadensis Mönch 'I-214' and P. deltoides Marsh. 'Dvina')

Author:
Cocozza, Claudia; Lasserre, Bruno; Giovannelli, Alessio; Castro, Gaetano; Fragnelli, Giuseppe; Tognetti, Roberto
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3655-3664
ISSN:
0022-0957
Subject:
Populus canadensis; Populus deltoides; air temperature; clones; cold; dendrometers; drought; environmental factors; plant-water relations; shrinkage; stems; summer; winter
Abstract:
... Changes of stem diameter were continuously monitored during winter in two field-grown poplar clones, using automatic point dendrometers. The objective of this study was to find an analytical solution to seasonal synchronization of stem diameter oscillations and low air temperatures. The study identified to what extent and with what frequency low air temperature induced stem diameter variation in ' ...
DOI:
10.1093/jxb/erp212

18. Molecular mechanism for jasmonate-induction of anthocyanin accumulation in Arabidopsis

Author:
Shan, Xiaoyi; Zhang, Yongsheng; Peng, Wen; Wang, Zhilong; Xie, Daoxin
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3849-3860
ISSN:
0022-0957
Subject:
anthocyanins; transcription factors; Arabidopsis; biosynthesis; pigmentation; genes; ecological function
Abstract:
... Anthocyanins are important plant pigments that fulfil many physiological and ecological functions. Anthocyanin biosynthesis is controlled by numerous regulatory factors at the transcriptional level. Jasmonates (JAs) has been shown to induce anthocyanin accumulation in several plant species, however, the molecular mechanism for JA-regulated anthocyanin accumulation remains unknown. In this study, g ...
DOI:
10.1093/jxb/erp223
PubMed:
19596700

19. Overexpression of the soybean GmERF3 gene, an AP2/ERF type transcription factor for increased tolerances to salt, drought, and diseases in transgenic tobacco

Author:
Zhang, Gaiyun; Chen, Ming; Li, Liancheng; Xu, Zhaoshi; Chen, Xueping; Guo, Jiaming; Ma, Youzhi
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3781-3796
ISSN:
0022-0957
Subject:
ethylene; drought; Soybean mosaic virus; salicylic acid; Ralstonia solanacearum; Tobacco mosaic virus; jasmonic acid; carbohydrates; proline; gene expression; Alternaria alternata; sequence analysis; transcription factors; messenger RNA; DNA-binding domains; salt stress; tobacco; salt tolerance; transgenic plants; cold stress; soybeans; reporter genes; abscisic acid
Abstract:
... A new member of the AP2/ERF transcription factor family, GmERF3, was isolated from soybean. Sequence analysis showed that GmERF3 contained an AP2/ERF domain of 58 amino acids and two putative nuclear localization signal (NLS) domains. It belonged to a group IV protein in the ERF (ethylene response factor) subfamily as typified by a conserved N-terminal motif [MCGGAI(I/L)]. Expression of GmERF3 was ...
DOI:
10.1093/jxb/erp214
PubMed:
19602544
PubMed Central:
PMC2736888

20. OXI1 protein kinase is required for plant immunity against Pseudomonas syringae in Arabidopsis

Author:
Petersen, Lindsay N.; Ingle, Robert A.; Knight, Marc R.; Denby, Katherine J.
Source:
Journal of experimental botany 2009 v.60 no.13 pp. 3727-3735
ISSN:
0022-0957
Subject:
immunity; proteins; Arabidopsis; serine; avirulent strains; reactive oxygen species; NADP (coenzyme); pathogens; Pseudomonas syringae; root hairs; Peronospora parasitica; genes; mutants; pathogenesis; oxidative stress
Abstract:
... Expression of the Arabidopsis Oxidative Signal-Inducible1 (OXI1) serine/threonine protein kinase gene (At3g25250) is induced by oxidative stress. The kinase is required for root hair development and basal defence against the oomycete pathogen Hyaloperonospora parasitica, two separate H₂O₂-mediated processes. In this study, the role of OXI1 during pathogenesis was characterized further. Null oxi1 m ...
DOI:
10.1093/jxb/erp219
PubMed:
19574254
PubMed Central:
PMC2736892