Polyploidization within the Funariaceae—a key principle behind speciation, sporophyte reduction and the high variance of spore diameters?
Polyploidization within the Funariaceae—a key principle behind speciation, sporophyte reduction and the high variance of spore diameters?
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葫芦科内的多倍化——物种形成、孢子体减少和孢子直径高度变异背后的关键原理？
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
R. Reski
中科院分区：
文献类型：
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作者：
Anna K. Ostendorf;Nico van Gessel;Yaron Malkowsky;M. Sabovljević;S. Rensing;A. Roth;R. Reski
尽管基因组复制(多倍化)被认为是开花植物物种形成背后的主要力量，但在苔藓植物中，基因组复制(多倍化)的进化相关性在很大程度上仍未被探索。模式生物Physcomitrella patens和近缘物种的系统发育和基因组学研究表明，多倍化可能通过杂交(异源多倍化)在镰刀菌科内产生新物种。通过对核单拷贝基因BRK1的系统发育分析，结合流式细胞仪的DNA含量测定，我们鉴定出亨氏Entosodon Hungaricus为异源多倍体物种。与早先被鉴定为可能由杂交产生的种--早熟禾(Physcomitrium Pyriforme)、早熟早熟禾(Physcomitrium Eurystomum)和厚生早熟禾(Physcomitrium Colichymatum)一起，湖南早熟禾代表了一个物种复合体的额外异源多倍体谱系，其特征是孢子体减少，孢子大小有相当大的差异。基于18个物种的形态和细胞学数据，我们强调了多倍化对孢子大小和孢子体结构的潜在影响。
Although being recognized as a major force behind speciation in flowering plants, the evolutionary relevance of genome duplication (polyploidization) remains largely unexplored in mosses. Phylogenetic and-genomic insights from the model organism Physcomitrella patens and closely related species revealed that polyploidization, likely via hybridization (allopolyploidization), gives rise to new species within the Funariaceae. Based on the phylogenetic analysis of the nuclear single copy gene BRK1 combined with the measurement of DNA content by flow cytometry, we identified Entosthodon hungaricus as such an allopolyploid species. Together with Physcomitrium pyriforme, Physcomitrium eurystomum and Physcomitrium collenchymatum, which were identified previously as species that likely arose by hybridization, E. hungaricus represents an additional allopolyploid lineage of a species complex that is characterized by convergent sporophyte reduction and a considerable variance in spore sizes. Based on morphological and cytological data from 18 species, we highlight the potential impact of polyploidization on the size of the spores and on sporophyte architecture.
影响因子：
56.9
作者：
Rensing, Stefan A.;Lang, Daniel;Boore, Jeffrey L.
通讯作者：
Boore, Jeffrey L.
影响因子：
7.2
作者：
Lang, Daniel;Ullrich, Kristian K.;Rensing, Stefan A.
通讯作者：
Rensing, Stefan A.
影响因子：
3.4
作者：
Rensing SA;Ick J;Fawcett JA;Lang D;Zimmer A;Van de Peer Y;Reski R
通讯作者：
Reski R