Arid
DOI10.1186/s12870-014-0397-x
Global analysis of gene expression profiles in physic nut (Jatropha curcas L.) seedlings exposed to drought stress
Zhang, Chao1,2; Zhang, Lin1,3; Zhang, Sheng4; Zhu, Shuang1,2; Wu, Pingzhi1; Chen, Yaping1; Li, Meiru1; Jiang, Huawu1; Wu, Guojiang1
通讯作者Wu, Guojiang
来源期刊BMC PLANT BIOLOGY
ISSN1471-2229
出版年2015
卷号15
英文摘要

Background: Physic nut (Jatropha curcas L.) is a small perennial tree or large shrub, which is well-adapted to semi-arid regions and is considered to have potential as a crop for biofuel production. It is now regarded as an excellent model for studying biofuel plants. However, our knowledge about the molecular responses of this species to drought stress is currently limited.


Results: In this study, genome-wide transcriptional profiles of roots and leaves of 8-week old physic nut seedlings were analyzed 1, 4 and 7 days after withholding irrigation. We observed a total of 1533 and 2900 differentially expressed genes (DEGs) in roots and leaves, respectively. Gene Ontology analysis showed that the biological processes enriched in droughted plants relative to unstressed plants were related to biosynthesis, transport, nucleobase-containing compounds, and cellular protein modification. The genes found to be up-regulated in roots were related to abscisic acid (ABA) synthesis and ABA signal transduction, and to the synthesis of raffinose. Genes related to ABA signal transduction, and to trehalose and raffinose synthesis, were up-regulated in leaves. Endoplasmic reticulum (ER) stress response genes were significantly up-regulated in leaves under drought stress, while a number of genes related to wax biosynthesis were also up-regulated in leaves. Genes related to unsaturated fatty acid biosynthesis were down-regulated and polyunsaturated fatty acids were significantly reduced in leaves 7 days after withholding irrigation. As drought stress increased, genes related to ethylene synthesis, ethylene signal transduction and chlorophyll degradation were up-regulated, and the chlorophyll content of leaves was significantly reduced by 7 days after withholding irrigation.


Conclusions: This study provides us with new insights to increase our understanding of the response mechanisms deployed by physic nut seedlings under drought stress. The genes and pathways identified in this study also provide much information of potential value for germplasm improvement and breeding for drought resistance.


英文关键词Physic nut (Jatropha curcas L.) drought stress gene expression profiles abscisic acid waxes and fatty acids endoplasmic reticulum stress response senescence
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000348605300002
WOS关键词LEAF DEHYDRATION TOLERANCE ; FATTY-ACID-COMPOSITION ; SIGNAL-TRANSDUCTION ; TRANSCRIPTION FACTORS ; ARABIDOPSIS-THALIANA ; REGULATORY NETWORKS ; CUTICULAR WAX ; WATER-STRESS ; ETHYLENE RESPONSE ; ABIOTIC STRESSES
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/186304
作者单位1.Chinese Acad Sci, Key Lab Plant Resources Conservat & Sustainable U, South China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.Luoyang Inst Sci & Technol, Dept Environm Engn & Chem, Luoyang 471023, Peoples R China;
4.South Univ Sci & Technol China, Dept Biol, Shenzhen 518055, Peoples R China
推荐引用方式
GB/T 7714
Zhang, Chao,Zhang, Lin,Zhang, Sheng,et al. Global analysis of gene expression profiles in physic nut (Jatropha curcas L.) seedlings exposed to drought stress[J],2015,15.
APA Zhang, Chao.,Zhang, Lin.,Zhang, Sheng.,Zhu, Shuang.,Wu, Pingzhi.,...&Wu, Guojiang.(2015).Global analysis of gene expression profiles in physic nut (Jatropha curcas L.) seedlings exposed to drought stress.BMC PLANT BIOLOGY,15.
MLA Zhang, Chao,et al."Global analysis of gene expression profiles in physic nut (Jatropha curcas L.) seedlings exposed to drought stress".BMC PLANT BIOLOGY 15(2015).
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