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Transcriptomic Analysis Provides Insights into Foliar Zinc Application Induced Upregulation in 2-Acetyl-1-pyrroline and Related Transcriptional Regulatory Mechanism in Fragrant Rice

文献类型： 外文期刊

作者： Bao, Gegen 1 ; Ashraf, Umair 4 ; Wan, Xiaorong 2 ; Zhou, Qi 2 ; Li, Shengyu 2 ; Wang, Chunling 5 ; He, Longxin 1 ; Tang, 1 ;

作者机构： 1.South China Agr Univ, Coll Agr, Dept Crop Sci & Technol, Guangzhou 510642, Peoples R China

2.Zhongkai Univ Agr & Engn, Guangzhou Key Lab Res & Dev Crop Germplasm Resour, Guangzhou 510225, Peoples R China

3.Minist Agr, Sci Observing & Expt Stn Crop Cultivat South Chin, Guangzhou 510642, Peoples R China

4.Univ Educ, Dept Bot, Div Sci & Technol, Lahore 54770, Punjab, Pakistan

5.Guangdong Acad Sci, Guangdong Microbial Culture Collect Ctr GDMCC, Guangdong Inst Microbiol, Guangzhou 510070, Peoples R China

关键词： fragrant rice; 2-acetyl-1-pyrroline; foliar zinc application; transcription factors; gene

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

ISSN： 0021-8561

年卷期： 2021 年 69 卷 38 期

页码：

收录情况： SCI

摘要： The involvement of zinc (Zn) in terms of aroma formation has been rarely investigated. This study shows that the regulation of 2-acetyl-1-pyrroline (2AP) biosynthesis was evaluated in two different rice cultivars under foliar Zn application. The results showed that the 2AP and Zn contents in leaves and grains were improved substantially under foliar Zn application. The 2AP content was positively related to the expression PSCS2 gene, contents of proline, 1-pyrroline, and Delta 1-pyrroline-5-carboxylate (PSC), and the activity of pyrroline-5-carboxylate synthase (PSCS) under Zn application in fragrant rice. Multiple transcription factors (TFs) were differently expressed, such as bZIPs, NACs, and MYBs, to play a role under Zn treatments in fragrant rice, suggesting the crucial role of 46 differently expressed TFs in 2AP improvements in fragrant rice. Furthermore, this study showed that the optimal foliar Zn application at a concentration of 30 mg L-1 could increase the 2AP content of aromatic rice and keep the yield stable or increase the yield. TFs were involved in regulating to promote the 2AP formation in aromatic rice under the foliar Zn application. However, the relationship between 2AP biosynthesis pathway genes and TFs in fragrant rice remains to be further studied.

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