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番茄中叶子和水果颜料的含量差异导致复杂的代谢重编程,而不会影响生长

Auderlan M Pereira¹, Auxiliadora O Martins¹, William Batista-Silva¹

¹National Institute of Science and Technology on Plant Physiology Under Stress Conditions, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.

Journal of plant physiology

|January 25, 2024

概括

番茄植物与改变了胡卜素的生产显示在叶子显著的代谢变化,影响氨基酸和有机酸水平. 这些变化支持水果类胡卜素生物合成,但对植物生长或气体交换没有重大影响.

科学领域:

植物生物学植物生物学
代谢工程是代谢工程.
营养科学营养科学

背景情况:

目前正在努力通过生物技术和育种来提高食品中的胡卜素含量.
了解改变胡卜素生物合成对整体植物生理学的影响是有限的.

研究的目的:

为了研究番茄叶中的代谢调整,以应对胡卜素生物合成中的遗传修饰.
为了确定叶子中的光合作用和中央新陈代谢是否被重新编程以支持果实中改变的胡卜素生产.

主要方法:

对特征很好的西红类胡卜素突变物 (红色/旧金色蛋,三角质胡卜素/德尔,/t) 的分析.
评估植物生长,叶子解剖学和气体交换参数.
叶子组织的代谢分析,以确定中央代谢的变化.

主要成果:

胡卜素生物合成 (og, Del, t) 的突变对植物生长,叶子结构和气体交换的影响最小.
叶子发生了显著的代谢重编程,其特点是氨基酸水平增加和有机酸水平降低.
碳流量受到广泛的影响,表明叶子中的代谢调整支持水果类胡卜素的积累.

结论:

番茄叶的新陈代谢经历了大量的重编程,以适应水果中改变的胡卜素生物合成,尽管对生长有轻微的影响.
这些发现提供了关于植物代谢灵活性的见解,并有助于通过胡卜素丰富改善营养价值.

关键词:

胡卜素是一种胡卜素.代谢调整可以调整.光合作用光合作用颜料颜料是一种颜料.

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