Jatropha curcas
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PROVIDER: PRJNA241133 | ENA |
REPOSITORIES: ENA
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Project description:Jatropha curcas, a multipurpose plant attracting much attention due to its high oil content and quality for biofuel, is recognized as a drought tolerant species. However, this drought tolerance is still poorly characterized. This study aims to contribute to uncover the molecular background of this tolerance, with the use of a combined approach of transcriptional profiling and morphophysiological characterization along a period of water withholding (49 days) followed by rewatering (7 days). Morphophysiological measurements evidenced that J. curcas plants presented different adaptations to withstand moderate and severe drought. Thus, RNA-Seq was performed for samples collected at moderate and severe stress followed by rewatering, for both roots and leaves. Transcriptomic analysis revealed organ-specific adaptations across all investigated conditions, except under severe stress, in which the drought response of J. curcas surpassed organ-specificity by dramatic transcriptomic reorganization. These changes in gene expression were clearly evidenced by the down-regulation of genes involved in growth and water uptake, and up-regulation of osmotic adjustments and cellular homeostasis related genes. However, organ-specific variations were also detected, such as strong up-regulation of chlorophyll and trehalose metabolism in leaves. Functional validation further corroborated the differentially expression of genes coding for enzymes involved in chlorophyll metabolism, which correlates with the metabolite content of this pathway. Two Jatropha curcas accessions were submitted to moderate and severe drought stress (water withholding) followed by recovery (3d re-watering), transcriptomic profiles were assessed by RNA-Seq.
2015-12-09 | E-GEOD-61109 | biostudies-arrayexpress
Project description:Jatropha is known for its ability to grow in marginal lands and drought prone areas receiving limited amounts of rainfall. Accordingly, gene discovery in Jatropha will be useful for providing a source of genetic information for the improvement of drought tolerance in crops. In this study, a Jatropha oligomicroarray was developed to evaluate the gene expression profile of Jatropha plants during drought stress response and recovery from stress. When the gene expression patterns were compared between those differentially expressed during exposure to drought stress and re-watering, it was possible to identify 333 genes that are involved in the response to dehydration, while 592 genes were found to be significant during recovery, and 375 genes are associated in both dehydration and recovery. Furthermore, representative genes from the three gene categories were compared to those found in other plant species and a basic understanding on how Jatropha copes with drought and its mechanism for survival in dry conditions is discussed. Taken together, the oligomicroarray that we developed in this study is a useful tool for analyzing expression profiles of Jatropha genes to better understand molecular mechanism underlying drought stress responses as well as other aspects of molecular studies in Jatropha.
2014-11-30 | GSE55847 | GEO
Project description:Jatropha curcas L. gene expression under cold stress
| PRJNA187138 | ENA
Project description:As a promising energy plant for biodiesel, Jatropha curcas is a tropical and subtropical shrub. Chilling is a major abiotic stress affecting the growth and development of J. curcas. In this study, we adopt the phosphoproteomic analysis, physiological measurement, ultrastructure observation to illustrate molecular mechanisms of J. curcas seedling under chilling (4 °C) stress. After chilling for 6 h, 308 significantly changed phosphoproteins were detected in J. curcas seedling without obvious physiological injury. When obvious physiological injury can be observed after chilling for 24 h, a total of 332 phosphoproteins were examined to be significantly changed, after recovery (28 °C) for 24 h, 291 phosphoproteins were varied at the phosphorylation level. The results of Gene Ontology analysis showed that phosphoproteins were mainly responsible for cellular protein modification process, transport, cellular component organization and signal transduction at the chilling and recovery periods. On the basis of protein-protein interaction network analysis, several protein kinases, such as SnRK2 (serine threonine-protein kinase srk2), MEKK1 (mitogen-activated protein kinase kinase kinase 1), EDR1, CDPK (calcium-dependent protein kinase), EIN2 (Ethylene-insensitive protein 2), EIN4, PI4K (phosphatidylinositol 4-kinase alpha 1) and 14-3-3 were possible responsible for cross-talk between ABA, Ca2+, ethylene, phosphoinositide and 14-3-3 mediated signaling pathways. We also highlighted the phosphorylation of HOS1 (E3 ubiquitin-protein ligase HOS1), APX (Cytosolic ascorbate peroxidase-1) and PIP2 (Aquaporin pip2) played vital roles in J. curcas seedling under chilling stress, and they will be valuable in further study form the molecular breeding perspective.
2019-01-09 | PXD011438 | Pride
Project description:Jatropha curcas, a multipurpose plant attracting much attention due to its high oil content and quality for biofuel, is recognized as a drought tolerant species. However, this drought tolerance is still poorly characterized. This study aims to contribute to uncover the molecular background of this tolerance, with the use of a combined approach of transcriptional profiling and morphophysiological characterization along a period of water withholding (49 days) followed by rewatering (7 days). Morphophysiological measurements evidenced that J. curcas plants presented different adaptations to withstand moderate and severe drought. Thus, RNA-Seq was performed for samples collected at moderate and severe stress followed by rewatering, for both roots and leaves. Transcriptomic analysis revealed organ-specific adaptations across all investigated conditions, except under severe stress, in which the drought response of J. curcas surpassed organ-specificity by dramatic transcriptomic reorganization. These changes in gene expression were clearly evidenced by the down-regulation of genes involved in growth and water uptake, and up-regulation of osmotic adjustments and cellular homeostasis related genes. However, organ-specific variations were also detected, such as strong up-regulation of chlorophyll and trehalose metabolism in leaves. Functional validation further corroborated the differentially expression of genes coding for enzymes involved in chlorophyll metabolism, which correlates with the metabolite content of this pathway.
2015-12-09 | GSE61109 | GEO
Project description:Gene expression analysis by high-throughtput RNA-sequencing from Arabidopsis seedlings (10 d.o.) overexpressing Jatropha curcas (Jc) ERFVII-2 in wildtype (MC) or stablized (MA) forms.
2020-07-17 | GSE154601 | GEO
Project description:RNA-seq for drought stress response in Jatropha curcas L
| PRJNA257901 | ENA
Project description:Jatropha curcas Transcriptome or Gene expression
| PRJNA401963 | ENA