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罗莎属植物中近端重复的-6-酸盐脱酶基因的进化动态和功能特征

Fan Yang¹, Jiawei Luo¹, Songxue Han¹

¹State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China.

Frontiers in plant science

|November 25, 2024

概括

索尔比特6-酸盐脱酶 (S6PDH) 基因进化在罗莎属植物中涉及基因重复和转移,导致功能多样化. 这些变化会影响不同罗萨ceae 血统的索比代谢.

科学领域:

植物遗传学植物遗传学
分子进化的分子进化.
生物化学生化学

背景情况:

索尔比托是罗萨ceae植物中一个关键的光合作用和储存化合物.
酸6-脱酶 (S6PDH) 是酸合成中的速度限制酶.
罗萨ceae中S6PDH的进化历史和功能多样化尚未得到充分了解.

研究的目的:

为了研究S6PDH基因在Rosaceae家族的进化关系和合成.
阐明S6PDH基因复制和功能多样化的机制.
了解罗莎属植物中酸醇代谢变化的遗传基础.

主要方法:

在Rosaceae基因组中对S6PDH基因进行了家族遗传学分析.
对比合成分析以识别基因重复和重排.
检查与S6PDH进化相关的基因表达模式和酶活性.

主要成果:

S6PDH起源于Rosaceae祖先的一对近接重复的基因.
整个基因组复制 (WGD) 事件在马里亚血统中显著放大了S6PDH.
S6PDH基因分为两种类型,其中Clade 1在Amygdaloideae中显示出谱系特异的转换和改变的功能 (例如,减少叶子活动,增强应激反应),而Clade 2在Rosoideae/Dryadoideae中经历了潜在减少活动的外因子损失.

结论:

基因重复,转移和WGD事件是S6PDH进化和Rosaceae功能多样化的关键驱动因素.
S6PDH菌群的独特进化轨迹有助于罗莎属亚家族中酸盐代谢的变化.
这项研究提供了对罗莎属植物中控制比醇代谢的遗传机制的基础见解.

关键词:

罗莎属植物 (Rosaceae) 是一个植物.在 S6PDH 中.功能分歧的功能分歧.基因转移转换基因转换临近重复基因的近端重复基因.索尔比托尔 (Sorbitol) 是一种类型的醇.综合分析综合分析

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