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- 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
-
http://dx.doi.org/10.1093/jxb/erp231
- 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
-
http://dx.doi.org/10.1093/jxb/erp216
- 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
-
http://dx.doi.org/10.1093/jxb/erp222
- 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
-
http://dx.doi.org/10.1093/jxb/erp209
- 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
-
http://dx.doi.org/10.1093/jxb/erp220
- 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
-
http://dx.doi.org/10.1093/jxb/erp208
- 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
-
http://dx.doi.org/10.1093/jxb/erp226
- 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
-
http://dx.doi.org/10.1093/jxb/erp217
- 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
-
http://dx.doi.org/10.1093/jxb/erp229
- 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
-
http://dx.doi.org/10.1093/jxb/erp228
- 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
-
http://dx.doi.org/10.1093/jxb/erp206
- 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
-
http://dx.doi.org/10.1093/jxb/erp227
- 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
-
http://dx.doi.org/10.1093/jxb/erp230
- 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
-
http://dx.doi.org/10.1093/jxb/erp225
- 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
-
http://dx.doi.org/10.1093/jxb/erp210
- 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
-
http://dx.doi.org/10.1093/jxb/erp232
- 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
-
http://dx.doi.org/10.1093/jxb/erp212
- 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
-
http://dx.doi.org/10.1093/jxb/erp223
- 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
-
http://dx.doi.org/10.1093/jxb/erp214
- 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
-
http://dx.doi.org/10.1093/jxb/erp219