The moss calyptra: A maternal structure influencing offspring development
作者: Jessica M. Budke
刊名: The Bryologist, 2019, Vol.122 (3), pp.471-491
来源数据库: BioOne Complete
DOI: 10.1639/0007-2745-122.3.471
关键词: AnatomyDehiscenceDevelopmentGametophyteMossesMorphologySporophyteStructure-function relationshipsMaternal effectsReproductive biology
原始语种摘要: The calyptra is a small, maternal gametophyte structure that covers the apex of the offspring sporophyte and is critical for the transition from seta formation to capsule differentiation in many moss taxa. It has been hypothesized to function by (1) providing a mechanical constraint that coordinates the development of the presumptive capsule, (2) secreting hormones that influence sporangium differentiation, (3) physically protecting the undifferentiated capsule region, (4) preventing water loss from the sporophyte apex, and/or (5) lowering the rate of sporophyte transpiration. This review explores the experiments that have tested these hypotheses and the evidence that has been found to support or refute them from scientific literature dating back to the late 1700's. Across mosses,...
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  • development 开发
  • calyptra 帽状体
  • maternal 母的
  • offspring 后代
  • function 函数
  • mechanical 机械的
  • scientific 科学
  • providing 只要
  • sporophyte 孢子体
  • capsule 胶囊