Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996, USA.
Curr Opin Plant Biol. 2024 Oct;81:102565. doi: 10.1016/j.pbi.2024.102565. Epub 2024 Jun 1.
The study of moss calyptra form and function began almost 250 years ago, but calyptra research has remained a niche endeavor focusing on only a small number of species. Recent advances have focused on calyptra cuticular waxes, which function in dehydration protection of the immature sporophyte apex. The physical presence of the calyptra also plays a role in sporophyte development, potentially via its influence on auxin transport. Progress developing genomic resources for mosses beyond the model Physcomitrium patens, specifically for species with larger calyptrae and taller sporophytes, in combination with advances in CRISPR-Cas9 genome editing will enable the influence of the calyptra on gene expression and the production of RNAs and proteins that coordinate sporophyte development to be explored.
对藓类植物帽状体形态和功能的研究始于近 250 年前，但帽状体的研究一直是一个利基领域，仅关注少数几个物种。最近的研究进展集中在帽状体的角质层蜡上，它在保护未成熟孢子体顶端的脱水方面发挥作用。帽状体的物理存在也在孢子体发育中发挥作用，可能通过其对生长素运输的影响。除了模式生物拟南芥外，苔藓基因组资源的发展取得了进展，特别是对于那些帽状体较大、孢子体较高的物种，结合 CRISPR-Cas9 基因组编辑的进展，将能够探索帽状体对基因表达以及协调孢子体发育的 RNA 和蛋白质产生的影响。
