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Maternal control of seed size in plants

机译:母体控制植物种子大小

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摘要

Seed size is a key determinant of evolutionary fitness, and is also one of the most important components of seed yield. In angiosperms, seed development begins with double fertilization, which leads to the formation of a diploid embryo and a triploid endosperm. The outermost layer of the seed is the seed coat, which differentiates from maternal integuments. Therefore, the size of a seed is determined by the co-ordinated growth of the embryo, endosperm, and maternal tissue. Recent studies have identified several factors that act maternally or zygotically to regulate seed size, and revealed possible mechanisms that underlie seed size control in Arabidopsis and rice. In this review, we summarize current research progress in maternal control of seed size and discuss the roles of several newly identified regulators in maternal regulation of seed growth.
机译:种子大小是进化适应性的关键决定因素,也是种子产量最重要的组成部分之一。在被子植物中,种子的发育始于双重受精,这导致二倍体胚和三倍体胚乳的形成。种子的最外层是种皮,与母体外皮不同。因此,种子的大小取决于胚胎,胚​​乳和母体组织的协调生长。最近的研究已经确定了几个在母体或合子中调节种子大小的因素,并揭示了控制拟南芥和水稻种子大小的潜在机制。在这篇综述中,我们总结了目前在母体种子大小控制方面的研究进展,并讨论了几个新近确定的调节剂在母体种子生长调节中的作用。

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