Phylogenomic delineation of Physcomitrium (Bryophyta: Funariaceae) based on targeted sequencing of nuclear exons and their flanking regions rejects the retention of Physcomitrella, Physcomitridium and Aphanorrhegma  

作　　者：Rafael Medina Matthew G. Johnson Yang Liu Norman J. Wickett A. Jonathan Shaw Bernard Goffinet 

机构地区：[1]Ecology and Evolutionary Biology, University of Connecticut, 75N Eagleville Rd., Storrs, CT 06269‐3043, USA [2]Department of Biology, Augustana College, 639 38th Street, Rock Island, IL 61201, USA [3]Plant Science, Chicago Botanic Garden, 1000 Lake Cook Road, Glencoe, IL 60022, USA [4]Department of Biological Sciences, Texas Tech University, 2901 Main Street, Lubbock, TX 79409‐43131, USA [5]Key Laboratory of Southern Subtropical Plant Diversity, Shenzhen Fairy Lake Botanical Garden, Shenzhen 518004, China [6]China National GeneBank, BGI‐Shenzhen, Shenzhen 518120, China [7]Department of Biology, Duke University, Durham, NC 27708, USA

出　　处：《Journal of Systematics and Evolution》2019年第4期404-417,共14页植物分类学报（英文版）

摘　　要：Selection on spore dispersal mechanisms in mosses is thought to shape the transformation of the sporophyte. The majority of extant mosses develop a sporangium that dehisces through the loss of an operculum, and regulates spore release through the movement of articulate teeth, the peristome, lining the capsule mouth. Such complexity was acquired by the Mesozoic Era, but was lost in some groups during subsequent diversification events, challenging the resolution of the affinities for taxa with reduced architectures. The Funariaceae are a cosmopolitan and diverse lineage of mostly annual mosses, and exhibit variable sporophyte complexities, spanning from long, exerted, operculate capsules with two rings of well‐developed teeth, to capsules immersed among maternal leaves, lacking a differentiated line of dehiscence (i.e., inoperculate) and without peristomes. The family underwent a rapid diversification, and the relationships of taxa with reduced sporophytes remain ambiguous. Here, we infer the relationships of five taxa with highly reduced sporophytes based on 648 nuclear loci (exons complemented by their flanking regions), based on inferences from concatenated data and concordance analysis of single gene trees. Physcomitrellopsis is resolved as nested within one clade of Entosthodon. Physcomitrella s. l., is resolved as a polyphyletic assemblage and, along with its putative relative Aphanorrhegma, nested within Physcomitrium. We propose a new monophyletic delineation of Physcomitrium, which accommodates species of Physcomitrella and Aphanorrhegma. The monophyly of Physcomitrium s. l. is supported by a small plurality of exons, but a majority of trees inferred from exons and their adjacent non‐coding regions.

关 键 词：cleistocarpy Entosthodon MOSSES PHYLOGENETICS TARGETED enrichment 

分 类 号：Q[生物学]