Premium
TAXONOMIC REEXAMINATION OF CHARA GLOBULARIS (CHARALES, CHAROPHYCEAE) FROM JAPAN BASED ON OOSPORE MORPHOLOGY AND rbc L GENE SEQUENCES, AND THE DESCRIPTION OF C. LEPTOSPORA SP. NOV. 1
Author(s) -
Sakayama Hidetoshi,
Kasai Fumie,
Nozaki Hisayoshi,
Watanabe Makoto M.,
Kawachi Masanobu,
Shigyo Mikao,
Nishihiro Jun,
Washitani Izumi,
Krienitz Lothar,
Ito and Motomi
Publication year - 2009
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.2009.00700.x
Subject(s) - biology , typification , type species , type (biology) , botany , sensu , herbarium , holotype , taxonomy (biology) , genus , nomenclature , paleontology
Chara globularis Thuillier (=f. globularis sensu R. D. Wood) is a widespread species of the genus and inhabits fresh‐ and brackish‐water environments. In an attempt to reexamine the taxonomic status of C. globularis collected from Japan, we reassessed vegetative and oospore morphology of Japanese material and herbarium specimens originating from Europe (including the type specimen) and conducted molecular phylogenetic analyses based on rbc L gene sequences. Although the other vegetative morphologies were consistent with the description of C. globularis f. globularis sensu R. D. Wood, we identified two types of branchlets within the Japanese materials: one has elongate end segments (EL type), and the other has short end segments (SH type) corresponding to the type material. Moreover, the oospore wall of the EL type was different from that in the SH type. The oospores of the EL type were dark brown to reddish brown and had a spongy pattern with the pusticular elevations on the fossa wall, whereas the fossa wall of the SH type was black with a granulate to papillate or fine pusticular pattern. In addition, our sequence data demonstrated that these two types are separated phylogenetically from each other. Therefore, we describe the EL type as a new species, C. leptospora sp. nov.