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Investigation of a freshwater acrochaetioid alga (Rhodophyta) with molecular and morphological methods
Author(s) -
Chen Le,
Feng Jia,
Han XiaoJing,
Xie ShuLian
Publication year - 2014
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/njb.00407
Subject(s) - biology , phylogenetic tree , clade , maximum parsimony , botany , genus , phylogenetics , maximum likelihood , evolutionary biology , zoology , gene , genetics , statistics , mathematics
An enigmatic acrochaetioid alga was collected from Niangziguan spring in Shanxi Province, northern China. Morphological data indicated that this alga reproduces exclusively asexually by monosporangia and its morphological characteristics suggested that it might be referred to Audouinella heterospora . To ascertain its phylogenetic position, phylogenetic trees were reconstructed using partial sequences of the plastid‐encoded gene ( rbc L) and the nuclear‐encoded gene (SSU rDNA) applying Bayesian inference (BI), maximum parsimony (MP) and maximum likelihood (ML). However, phylogenetic reconstructions showed that this acrochaetioid alga does not belong in a clade with the genus Audouinella , but forms a clade with Thorea hispida (Thoreales). Based on this analysis it is concluded that A. heterospora represents the ‘chantransia’ stage of T. hispida .