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Simultaneous analysis of endogenous plant growth substances during floral sex differentiation in Jatropha curcas L. using HPLC-ESI-MS/MS

文献类型： 外文期刊

作者： Hui, Wenkai 1 ; Wang, Yi 1 ; Yan, Shijuan 4 ; Shi, Jingfang 4 ; Huang, Wenjie 4 ; Zayed, Mohamed Zaky 5 ; Peng, Changc 1 ;

作者机构： 1.South China Agr Univ, Coll Forestry & Landscape Architecture, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangdong Key Lab Innovat Dev & Utilizat Forest P, Guangzhou, Guangdong, Peoples R China

2.Beijing Forestry Univ, Coll Biol Sci & Technol, Natl Engn Lab Forest Tree Breeding, Beijing, Peoples R China

3.Chinese Acad Sci, Key Lab Plant Resources Conservat & Sustainable U, South China Bot Garden, Guangzhou, Guangdong, Peoples R China

4.Guangdong Acad Agr Sci, Agrobiol Gene Res Ctr, Guangzhou, Guangdong, Peoples R China

5.Alexandria Univ, Fac Agr EL Shatby, Forestry & Wood Technol Dept, Alexandria, Egypt

关键词： Jatropha curcas L.; Bio-energy plants; Plant growth substances; Floral initiation; Floral sex differentiation

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

ISSN： 0304-4238

年卷期： 2018 年 241 卷

页码：

收录情况： SCI

摘要： The seed of Jatropha curcas is an ideal feedstock for producing biodiesel. However, low seed yield which was limited by its low female to male flower ratios is a bottleneck for its utilization. Here, six endogenous plant growth substances, Indole-3-acetic acid (IAA), Gibberellin A3 (GA(3)), Zeatin (Zt), Abscisic acid (ABA), Jasmonic acid (JA), and Salicylic acid (SA), were evaluated in male and female floral differentiation stages to uncover the regulatory events of endogenous plant hormones in J. curcas. Our results showed that the female floral initiation was accelerated by the higher concentration of Zt, GA(3), JA, SA and the ratios of JA/GA(3)%, JA/Zt%, and GA(3)/Zt%, whereas its subsequent development was involved in low concentration of Zt and GA(3). Conversely, the lower concentration of Zt, GA(3), JA, SA and the ratios of GA(3)/SA%, Zt/SA%, and JA/SA% were significantly related to male floral initiation, and its subsequent development was co-promoted by the higher concentration of IAA, Zt, GA(3) and JA. In addition, the concentration of ABA was down-regulated both in male and female floral differentiation processes. To our knowledge, this is the first investigation to link floral sex differentiation with endogenous plant growth substances in J. curcas. It provided insight into the potential for the regulation of flowering and the increase of fruit yield with exogenous plant growth substances.

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