Acceleration of Carbon Fixation in Chilling-Sensitive Banana under Mild and Moderate Chilling Stresses

文献类型： 外文期刊

第一作者： Liu, Jing

作者： Liu, Jing;Chen, Houbin;Wang, Yingying;Meng, Jian;Yuan, Weina;Tan, Yehuan;Ning, Tong;He, Zhenting;Xu, Chunxiang;Takac, Tomas;Samaj, Jozef;Yi, Ganjun

作者机构：

关键词： banana (Musa spp; AAA); mild chilling; carbon fixation; photosynthesis; phosphoenolpyruvate carboxylases; immunofluorescence labeling

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN：

年卷期： 2020 年 21 卷 23 期

页码：

收录情况： SCI

摘要： Banana is one of the most important food and fruit crops in the world and its growth is ceasing at 10-17 degrees C. However, the mechanisms determining the tolerance of banana to mild (>15 degrees C) and moderate chilling (10-15 degrees C) are elusive. Furthermore, the biochemical controls over the photosynthesis in tropical plant species at low temperatures above 10 degrees C is not well understood. The purpose of this research was to reveal the response of chilling-sensitive banana to mild (16 degrees C) and moderate chilling stress (10 degrees C) at the molecular (transcripts, proteins) and physiological levels. The results showed different transcriptome responses between mild and moderate chilling stresses, especially in pathways of plant hormone signal transduction, ABC transporters, ubiquinone, and other terpenoid-quinone biosynthesis. Interestingly, functions related to carbon fixation were assigned preferentially to upregulated genes/proteins, while photosynthesis and photosynthesis-antenna proteins were downregulated at 10 degrees C, as revealed by both digital gene expression and proteomic analysis. These results were confirmed by qPCR and immunofluorescence labeling methods. Conclusion: Banana responded to the mild chilling stress dramatically at the molecular level. To compensate for the decreased photosynthesis efficiency caused by mild and moderate chilling stresses, banana accelerated its carbon fixation, mainly through upregulation of phosphoenolpyruvate carboxylases.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序