Bai Shu-Nong, Rao Guang-Yuan, Yang Ji
College of Life Sciences, Peking University, Beijing, China.
School of Life Sciences, Fudan University, Shanghai, China.
Front Plant Sci. 2022 Aug 29;13:965000. doi: 10.3389/fpls.2022.965000. eCollection 2022.
The seed is an evolutionary innovation in the plant kingdom. While human civilization depends heavily on seed production, how the seed trait emerged remains elusive. In this opinion article, a "golden-trio hypothesis" is proposed based on our investigations of gene functions in . This hypothesis posits that a "seed program" arose from spatiotemporal integration of three key components: assimilate flow, ABA-mediated stress responses, and stress-induced expression. Thus, the evolutionary innovation of seeds should be considered not a simple event resulting from new genes; rather, it represents the outcome of a series of physiological and morphological innovations that emerged prior to and regardless of the origin of the seed program. This new perspective could help us tackle some long-standing questions around the puzzling origin of seeds.
种子是植物界的一项进化创新。虽然人类文明严重依赖种子生产，但种子性状是如何出现的仍然难以捉摸。在这篇观点文章中，基于我们对[具体研究对象]基因功能的研究，提出了一个“黄金三角假说”。该假说认为，一个“种子程序”源于三个关键成分的时空整合：同化物流、脱落酸介导的应激反应和应激诱导的[具体基因]表达。因此，种子的进化创新不应被视为由新基因导致的简单事件；相反，它代表了一系列生理和形态创新的结果，这些创新在种子程序起源之前就已出现，且与种子程序的起源无关。这一新观点有助于我们解决一些围绕种子令人困惑的起源的长期问题。
