期刊:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ISSN:1422-0067 , 年:2018 . 卷:19 . 期:2
语种:
English
原文链接:http://dx.doi.org/10.3390/ijms19020432
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- 摘要
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Jatropha curcas L. seeds an oilseed plant with great potential for biodiesel production. However, low seed yield, which was limited by its lower female flowers, was a major drawback for its utilization. Our previous study found that the flower number and female-to-male ratio were increased by gibberellin treatment. Here, we compared the transcriptomic profiles of inflorescence meristem at different time points after gibberellic acid A3 (GA(3)) treatment. The present study showed that 951 differentially expressed genes were obtained in response to gibberellin treatment, compared with control samples. The 6-h time point was an important phase in the response to exogenous gibberellin. Furthermore, the plant endogenous gibberellin, auxin, ethylene, abscisic acid, and brassinolide-signaling transduction pathways were repressed, whereas the genes associated with cytokinin and jasmonic acid signaling were upregulated for 24-h time point following GA(3) treatment. In addition, the floral meristem determinacy genes (JcLFY, JcSOC1) and floral organ identity genes (JcAP3, JcPI, JcSEP1-3) were significantly upregulated, but their negative regulator (JcSVP) was downregulated after GA(3) treatment. Moreover, the effects of phytohormone, which was induced by exogenous plant growth regulator, mainly acted on the female floral differentiation process. To the best of our knowledge, this data is the first comprehensive analysis of the underlying transcriptional response mechanism of floral differentiation following GA(3) treatment in J. curcas, which helps in engineering high-yielding varieties of Jatropha.
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关键词
Jatropha curcas L; gibberellin; transcriptome; inflorescence meristems; DEGs
- 作者信息
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通讯作者:
Chen, XY , Beijing Forestry Univ, Coll Biol Sci & Technol, Natl Engn Lab Forest Tree Breeding, Beijing 100083, Peoples R China.; Chen, XY , South China Agr Univ, Coll Forestry & Landscape Architecture, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangdong Key Lab Innovat Dev & Utilizat Forest P, Guangzhou 510642, Guangdong, Peoples R China.; Wu, GJ , Chinese Acad Sci, Key Lab Plant Resources Conservat & Sustainable U, South China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China.
作者机构:
[1]
[
Hui, Wen-Kai; Chen, Xiao-Yang ]
Beijing Forestry Univ, Coll Biol Sci & Technol, Natl Engn Lab Forest Tree Breeding, Beijing 100083, Peoples R China.
[2]
[
Wang, Yi; Chen, Xiao-Yang; Zayed, Mohamed Zaky ]
South China Agr Univ, Coll Forestry & Landscape Architecture, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangdong Key Lab Innovat Dev & Utilizat Forest P, Guangzhou 510642, Guangdong, Peoples R China.
[3]
[
Zayed, Mohamed Zaky ]
Alexandria Univ, Fac Agr EL Shatby, Forestry & Wood Technol Dept, Alexandria 21527, Egypt.
[4]
[
Wu, Guo-Jiang ]
Chinese Acad Sci, Key Lab Plant Resources Conservat & Sustainable U, South China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China.
作者邮箱:
xwk168@126.com
x_wangyier@163.com
xychen_bjfu@163.com
mzmohamedzaky86@gmail.com
wugj@scbg.ac.cn
