Department of Geobotany and Plant Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland.
Department of Algology and Mycology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland.
PLoS One. 2020 Mar 11;15(3):e0230237. doi: 10.1371/journal.pone.0230237. eCollection 2020.
Plagiothecium longisetum was described by Lindberg in 1872, based on Maximowicz materials from Japan. In the 1970s, this species was synonymized with P. nemorale. However, a polyphasic approach applied to the investigation of the P. nemorale sensu lato showed a clear separation between the specimens of former P. longisetum and the type of P. nemorale. Morphological features and molecular analyses provide evidence that those two groups are distinct, as well as allowed to describe the new species. The results are strongly supported by the statistical analyses of morphometric features and phylogenetic analyses based on concatenated nuclear and chloroplast DNA markers. The maximum likelihood (ML) and Bayesian inference (BI) analyses of ITS, rps4 and rpl16 regions place both species outside the P. nemorale group. The distinctions between individual species, reflected by the morphological features-easy to observe-and the molecular data, provide a scientific foundation for the resurrection of P. longisetum Lindb. and establishment of a new species-P. angusticellum sp. nov.
长叶绢藓是林德贝格于 1872 年根据日本的马克西莫维茨标本描述的，曾在 20 世纪 70 年代被归并到绢藓属中。然而，对广义绢藓属的多相研究表明，长叶绢藓标本与绢藓属的模式种明显不同。形态特征和分子分析表明，这两个群体是不同的，也允许描述新的物种。形态特征的统计分析以及基于核和叶绿体 DNA 标记的系统发育分析结果强烈支持这一观点。ITS、rps4 和 rpl16 区域的最大似然法（ML）和贝叶斯推断（BI）分析将这两个物种都置于绢藓属之外。个体种之间的区别，体现在形态特征（易于观察）和分子数据上，为林德贝格长叶绢藓的复活和新种——狭叶绢藓的建立提供了科学依据。
