基于各种物种的水果发育的基于约束的比较建模突出了生长-防御权衡中的代谢
Sophie Colombié1,2, Sylvain Prigent1,2, Cédric Cassan1,2
1Univ. Bordeaux, INRAE, UMR1332 BFP, 33882, Villenave d'Ornon, France.
The Plant journal : for cell and molecular biology
|August 2, 2023
概括
植物水果的发育揭示了不同的代谢策略. 快速生长的水果优先考虑细胞壁合成,而缓慢生长的水果积累多,平衡生长和防御.
科学领域:
- 植物生理学 植物生理学
- 代谢建模 代谢建模
- 生物化学 生物化学
背景情况:
- 主要新陈代谢保持不变,但表现出特定物种的变化.
- 基于约束的代谢建模可以预测代谢流和表型.
- 了解水果发育需要分析随着时间的推移代谢网络.
研究的目的:
- 调查物种特异性代谢网络对水果发育结果的贡献.
- 为了将相对增长率 (RGR) 等生理特征与代谢流相关联.
- 探索不同水果类型的生长防御权衡.
主要方法:
- 应用了基于约束的建模,用于八种水果物种中初级代谢的通用代谢网络.
- 在水果发育过程中使用量化代谢物和化合物的受限模型.
- 使用多变量分析来识别流量分布的模式.
主要成果:
- 在水果发育过程中确定了常见的流量分布模式,在快速和缓慢生长的水果之间存在差异.
- 观察到,缓慢生长的水果利用三碳酸循环和糖解,导致更高的呼吸.
- 模型表明,酸盐还原酶在快速生长的黄瓜中吸收,而在缓慢生长的胡和茄子中积累,以达到平衡.
结论:
- 水果生长与防御的权衡主要由快速生长的水果中的细胞壁合成和缓慢生长的水果中的多积累提供支持.
- 代谢建模提供了关于植物在水果发育过程中采用的各种策略的见解.
- 特定物种的代谢途径显著影响水果的RGR和成熟时间.
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