How was apical growth regulated in the ancestral land plant? Insights from the development of non-seed plants.

How was apical growth regulated in the ancestral land plant? Insights from the development of non-seed plants.
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DOI:
10.1093/plphys/kiac313
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发表时间:
2022-08-29
期刊:
影响因子:
7.4
通讯作者:
Harrison, C. Jill
Harrison, C. Jill
中科院分区:
生物学1区
文献类型:
--
作者:
Fouracre, Jim P.;Harrison, C. Jill

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陆生植物生活史分为不同的单倍体配子体和二倍体孢子体阶段。不确定的顶端生长在苔藓(苔藓、地钱和角菜)、蕨类配子体和维管束(维管束植物)孢子体中独立进化。维管植物的顶端生长在多大程度上利用了保守的配子体基因网络,或利用了祖先的孢子体网络,这是植物进化中的一个长期问题。最近苔藓植物和管状植物作为姐妹类群的系统发育确认导致了对祖先陆地植物的性质的重新评估。在这里,我们回顾了心尖调节因子的发育遗传学研究,并推测了它们可能的进化史。最近的发育遗传学和系统发育研究的综合结果表明,祖先的孢子体比之前认为的要复杂得多。
Land plant life cycles are separated into distinct haploid gametophyte and diploid sporophyte stages. Indeterminate apical growth evolved independently in bryophyte (moss, liverwort, and hornwort) and fern gametophytes, and tracheophyte (vascular plant) sporophytes. The extent to which apical growth in tracheophytes co-opted conserved gametophytic gene networks, or exploited ancestral sporophytic networks, is a long-standing question in plant evolution. The recent phylogenetic confirmation of bryophytes and tracheophytes as sister groups has led to a reassessment of the nature of the ancestral land plant. Here, we review developmental genetic studies of apical regulators and speculate on their likely evolutionary history. The combined results of recent developmental genetics and phylogenetics studies suggest that the ancestral sporophyte was more complex than previously thought.
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