Integrated dominance mechanisms regulate reproductive architecture in Arabidopsis thaliana and Brassica napus.
Integrated dominance mechanisms regulate reproductive architecture in Arabidopsis thaliana and Brassica napus.
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DOI：
10.1093/plphys/kiab194
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发表时间：
2021-08-03
期刊：
影响因子：
7.4
通讯作者：
Bennett T
中科院分区：
文献类型：
--
作者：
Walker CH;Wheeldon CD;Bennett T
一系列负反馈机制调控拟南芥和甘蓝型油菜生殖结构的时空生成，使植物能够优化结实。开花植物的种子生产是复杂的，因为需要首先投资于生殖枝，花序，花和果实。此外，在许多物种中，植物从开花到结籽需要数月的时间。因此，当支持结实的“生殖结构”需要提前精心设计时，植物如何产生相对于环境资源的最佳结实？在这里，我们解决这个问题，通过调查的时空控制的生殖结构在拟南芥（拟南芥）和甘蓝型油菜。我们发现，资源和资源相关的信号，如基板量在确定规模的生殖努力发挥了关键作用，这是反映在最早的事件在生殖发育，广泛预测随后的生殖努力。我们发现，一系列的负反馈内和之间的发展阶段，防止植物过度承诺的早期发展阶段。这些反馈创造了一个高度可塑的、自我平衡的系统，在这个系统中，如果系统中的其他地方出现生殖失败，就可以产生额外的器官。我们建议，这些反馈代表了一个“综合优势”的机制，允许资源的使用，以正确的顺序之间的发展阶段，以优化种子集。
A series of negative feedback mechanisms regulate the spatio-temporal production of reproductive structures in Arabidopsis and Brassica napus, allowing plants to optimize seed-set. The production of seed in flowering plants is complicated by the need to first invest in reproductive shoots, inflorescences, flowers, and fruit. Furthermore, in many species, it will be months between plants generating flowers and setting seed. How can plants therefore produce an optimal seed-set relative to environmental resources when the “reproductive architecture” that supports seed-set needs to be elaborated so far in advance? Here, we address this question by investigating the spatio-temporal control of reproductive architecture in Arabidopsis (Arabidopsis thaliana) and Brassica napus. We show that resource and resource-related signals such as substrate volume play a key role in determining the scale of reproductive effort, and that this is reflected in the earliest events in reproductive development, which broadly predict the subsequent reproductive effort. We show that a series of negative feedbacks both within and between developmental stages prevent plants from over-committing to early stages of development. These feedbacks create a highly plastic, homeostatic system in which additional organs can be produced in the case of reproductive failure elsewhere in the system. We propose that these feedbacks represent an “integrated dominance” mechanism that allows resource use to be correctly sequenced between developmental stages to optimize seed set.
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影响因子：
2.4
作者：
Bennett T;Liang Y;Seale M;Ward S;Müller D;Leyser O
通讯作者：
Leyser O
影响因子：
16.6
作者：
Balanzà V;Martínez-Fernández I;Sato S;Yanofsky MF;Kaufmann K;Angenent GC;Bemer M;Ferrándiz C
通讯作者：
Ferrándiz C
影响因子：
5.6
作者：
Benlloch R;Berbel A;Ali L;Gohari G;Millán T;Madueño F
通讯作者：
Madueño F
影响因子：
7.4
作者：
Lazaro, Ana;Obeng-Hinneh, Evelyn;Albani, Maria C.
通讯作者：
Albani, Maria C.
DOI：
10.21273/jashs.120.1.71
发表时间：
1995-01-01
影响因子：
1.9
作者：
ABRUZZESE, A;MIGNANI, I;COCUCCI, SM
通讯作者：
COCUCCI, SM