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PKS1参与红皮梨水果中安东素的积累

Lei Guo¹, Yuting Hao¹, Ying Tang¹

¹College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi Province, China.

Plant cell reports

|February 17, 2025

概括

皮尔斯公园植物基因酶基质1 (PcPKS1) 通过与PcCSN5a结合,促进氨酸的积累,防止其抑制作用. 这种相互作用是了解梨的光调节水果颜色发育的关键.

科学领域:

植物生物学植物生物学
分子生物学分子生物学
生物化学生物化学

背景情况:

光线是一个关键的环境因素,影响植物中安托素的积累.
果实中光调节的安托西亚宁合成的分子机制仍然不完全理解.
皮尔斯公园植物基因酶基质1 (PcPKS1) 之前被确定为一种与素积累相关的差异表达基因.

研究的目的:

为了研究PcPKS1在梨果中安东素积累中的作用.
识别和描述与PcPKS1.1相互作用的蛋白质.
为了阐明红皮梨果中光调节的安东氨酸合成的分子机制.

主要方法:

在梨果中对PcPKS1的基因表达分析.
酵母二杂交 (Y2H),双分子光补充 (BiFC) 和分裂-光酶 (Split-LUC) 测试以验证蛋白质相互作用.
细胞下定位和同定位实验.
在草果实中进行过渡表达测试.

主要成果:

PcPKS1的表达与梨果皮中的安东素积累有关.
PcPKS1与Pyrus communis COP9信号体复合体子单元5A (PcCSN5a) 进行相互作用.
PcPKS1积极调节氨酸的积累,而PcCSN5a则作为负调节剂,抑制PcPKS1的功能.
PcPKS1和PcCSN5a在细胞膜上同定位.

结论:

通过直接结合,PcPKS1可以阻止PcCSN5a通过直接结合来抑制安素合成.
这种相互作用最终导致梨果中的安东素积累.
这项研究揭示了对红梨果中光调节的安东素积累的分子基础的新见解.

关键词:

在PcCSN5a中使用.这就是PcPKS1的意思.皮鲁斯 (Pyrus communis) 是一种常见的植物.安索亚宁的积累安索亚宁的积累

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