A common developmental program can produce diverse leaf shapes.

A common developmental program can produce diverse leaf shapes.
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DOI:
10.1111/nph.14449
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发表时间:
2017-10
期刊:
The New phytologist
影响因子:
--
通讯作者:
Prusinkiewicz P
Prusinkiewicz P
中科院分区:
其他
文献类型:
--
作者:
Runions A;Tsiantis M;Prusinkiewicz P

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桉树叶的形状多种多样,令人惊叹。本文讨论的中心问题是这种多样性的发展根源。为了研究这一问题,我们提出了一个叶片发育的计算模型,该模型推广了参考植物拟南芥、毛碎米和茄子的基本保守的分子程序。该模型将叶片的发育描述为三个相互交织的过程的产物:叶缘上锯齿状、裂片和/或小叶的图案;维管系统的图案;以及横跨主脉的叶片的生长。静脉作为生长方向的局部决定因素,起着重要的形态发生作用。我们表明,这个模型的微小变化可以产生不同的叶子形状,从简单到浅叶再到复合。因此,不同形状的真叶是由共同的发育程序的微小变异造成的,这似乎是合理的。另见Thomas&Ougham对本文的评论,216:337-338。
Eudicot leaves have astoundingly diverse shapes. The central problem addressed in this paper is the developmental origin of this diversity. To investigate this problem, we propose a computational model of leaf development that generalizes the largely conserved molecular program for the reference plants Arabidopsis thaliana, Cardamine hirsuta and Solanum lycopersicum. The model characterizes leaf development as a product of three interwoven processes: the patterning of serrations, lobes and/or leaflets on the leaf margin; the patterning of the vascular system; and the growth of the leaf blade spanning the main veins. The veins play a significant morphogenetic role as a local determinant of growth directions. We show that small variations of this model can produce diverse leaf shapes, from simple to lobed to compound. It is thus plausible that diverse shapes of eudicot leaves result from small variations of a common developmental program. See also the Commentary on this article by Thomas & Ougham, 216: 337–338.
DOI: 10.1111/tpj.13188
发表时间: 2016-06-01
期刊: PLANT JOURNAL
影响因子: 7.2
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