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在气供应下,MdbZIP44-MdCPRF2-like-Mdα-GP2调节果中的粉和糖代谢

Xuejing Cao¹, Zhigang Guo², Ping Wang¹

¹College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.

Horticulture research

|May 10, 2024

概括

气供应上调调节果MdbZIP44,一种转录因子,通过与MdCPRF2-like相互作用来调节Mdα-GP2基因表达,调节粉和糖的积累.

科学领域:

植物生理学植物生理学
分子生物学分子生物学
生物化学生物化学

背景情况:

(N) 是植物生长的关键巨量营养素,显著影响碳 (C) 代谢.
了解调节水果中糖和粉代谢的分子机制对于提高作物质量至关重要.

研究的目的:

调查果基本素拉链 (bZIP) 转录因子MdbZIP44在气供应下调节水果代谢中的作用.
阐明涉及MdbZIP44,MdCPRF2-like和Mdα-GP2控制粉和糖积累的分子途径.

主要方法:

转录组分析以确定在供应下差异表达的基因.
基因表达分析,包括定量实时PCR (qRT-PCR).
生物化学测定,包括蛋白质-蛋白质相互作用研究和酶活性测量.

主要成果:

在气供应下,果中的MdbZIP44表达被上调.
MdbZIP44直接与Mdα-GP2促进体结合,抑制其表达并促进粉积累,同时降低葡萄糖含量.
过度表达MdbZIP44增强了糖的积累,并改变了与糖代谢相关的基因的表达.
MdbZIP44与MdCPRF2-like相互作用,这个复合体,与单独的MdCPRF2-like一起,可以激活Mdα-GP2表达.

结论:

MdbZIP44-MdCPRF2-like-Mdα-GP2调节模块在管理粉和糖代谢方面发挥着重要作用,以应对的可用性.
这项研究为管理营养压力下的水果质量特征的复杂分子机制提供了新的见解.

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