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Morphological Innovation Drives Sperm Release in Bryophytes

文献类型: 外文期刊

作者: Zhang, Xinxin 1 ; Bian, Ang 2 ; Yang, Junbo 3 ; Liang, Ye 4 ; Zhang, Zhe 5 ; Yan, Meng 6 ; Yuan, Siqi 7 ; Zhang, Qun 7 ;

作者机构: 1.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China

2.Sichuan Univ, Coll Comp Sci, Chengdu 610065, Peoples R China

3.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr,Genome Anal Lab M, Shenzhen 518120, Guangdong, Peoples R China

4.Peking Univ, Core Facil State Key Lab Membrane Biol, Beijing 100871, Peoples R China

5.Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Clear Water Bay, Hong Kong 999077, Peoples R China

6.Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Sch Life Sci, Hangzhou 310024, Peoples R China

7.Nanjing Agr Univ, Coll Life Sci, State Key Lab Crop Genet & Germplasm Enhancement &, Nanjing 210095, Peoples R China

关键词: antheridium burst; cell geometry; cell wall mechanics; hydrostatic pressure; Marchantia polymorpha; Physcomitrium patens; sperm release

期刊名称:ADVANCED SCIENCE ( 影响因子:15.1; 五年影响因子:16.7 )

ISSN:

年卷期: 2024 年 11 卷 20 期

页码:

收录情况: SCI

摘要: Plant movements for survival are nontrivial. Antheridia in the moss Physcomitrium patens (P. patens) use motion to eject sperm in the presence of water. However, the biological and mechanical mechanisms that actuate the process are unknown. Here, the burst of the antheridium of P. patens, triggered by water, results from elastic instability and is determined by an asymmetric change in cell geometry. The tension generated in jacket cell walls of antheridium arises from turgor pressure, and is further promoted when the inner walls of apex burst in hydration, causing water and cellular contents of apex quickly influx into sperm chamber. The outer walls of the jacket cells are strengthened by NAC transcription factor VNS4 and serve as key morphomechanical innovations to store hydrostatic energy in a confined space in P. patens. However, the antheridium in liverwort Marchantia polymorpha (M. polymorpha) adopts a different strategy for sperm release; like jacket cell outer walls of P. patens, the cells surrounding the antheridium of M. polymorpha appear to play a similar role in the storage of energy. Collectively, the work shows that plants have evolved different ingenious devices for sperm discharge and that morphological innovations can differ. The biomechanics of antheridium burst in moss Physcomitrium patens depend on a single layer of jacket cells that store hydrostatic energy, which results from elastic instability and asymmetric changes in cell geometry. By contrast, the antheridium in liverwort Marchantia polymorpha adopts a different strategy for sperm release, and the cells surrounding the antheridium appear to play a dominant role. image

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