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Jatropha curcas

ABSTRACT: Transcriptomics and physiological analyses reveal coordinated alteration of metabolic pathways in Jatropha curcas drought tolerance

PROVIDER: PRJNA260255 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR1565790.fastq.gz	Fastqsanger.gz
	SRR1565800.fastq.gz	Fastqsanger.gz
	SRR1565791.fastq.gz	Fastqsanger.gz
	SRR1565801.fastq.gz	Fastqsanger.gz
	SRR1565792.fastq.gz	Fastqsanger.gz

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Transcriptomics and physiological analyses reveal coordinated alteration of metabolic pathways in Jatropha curcas drought tolerance

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

Transcriptomics and physiological analyses reveal coordinated alteration of metabolic pathways in Jatropha curcas drought tolerance

2015-12-09 | GSE61109 | GEO

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Gene expression analysis in Jatropha curcas under drought stress and recovery

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.

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Transcriptome profiling from Arabidopsis thaliana overexpressing Jatropha curcas ERFVII2

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.

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