Towards a new classification of the Arthoniales (Ascomycota) based on a three-gene phylogeny focussing on the genus Opegrapha

被引:62
|
作者
Ertz, Damien [1 ]
Miadlikowska, Jolanta [2 ]
Lutzoni, Francois [2 ]
Dessein, Steven [1 ]
Raspe, Olivier [1 ]
Vigneron, Nathalie [3 ]
Hofstetter, Valerie [2 ,5 ]
Diederich, Paul [4 ]
机构
[1] Dept Cryptogamy, Natl Bot Garden Belgium, B-1860 Meise, Belgium
[2] Duke Univ, Dept Biol, Durham, NC 27708 USA
[3] Yale Univ, Sch Med, Immunobiol Sect, New Haven, CT 06520 USA
[4] Musee Natl Hist Nat, L-2160 Luxembourg, Luxembourg
[5] Agroscope Changins Wadenswil Res Stn ACW, CH-1260 Nyon, Switzerland
来源
MYCOLOGICAL RESEARCH | 2009年 / 113卷
基金
美国国家科学基金会;
关键词
Arthoniaceae; Bayesian analysis; Enterographa; Hybridization; Lichens; Maximum likelihood; Molecular phylogenetics; Multi-gene phylogeny; Opegrapha; Roccellaceae; SUBUNIT RIBOSOMAL DNA; LICHEN; INHERITANCE; INFERENCE; MODEL; EVOLUTION; MRBAYES; FUNGI;
D O I
10.1016/j.mycres.2008.09.002
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
A multi-locus phylogenetic study of the order Arthoniales is presented here using the nuclear ribosomal large subunit (nuLSU), the second largest subunit of RNA polymerase II (RPB2) and the mitochondrial ribosomal small subunit (mtSSU). These genes were sequenced from 43 specimens or culture isolates representing 33 species from this order, 16 of which were from the second largest genus, Opegrapha. With the inclusion of sequences from GenBank, ten genera and 35 species are included in this study, representing about 18% of the genera and ca 3% of the species of this order. Our study revealed the homoplastic nature of morphological characters traditionally used to circumscribe genera within the Arthoniales, such as exciple carbonization and ascomatal structure. The genus Opegrapha appears polyphyletic, species of that genus being nested in all the major clades identified within Arthoniales. The transfer of O. atra and O. calcarea to the genus Arthonia will allow this genus and family Arthoniaceae to be recognized as monophyletic. The genus Enterographa was also found to be polyphyletic. Therefore, the following new combinations are needed: Arthonia calcarea (basionym: O. calcurea), and O. anquinella (basionym: Stigmatidium anquinellum); and the use of the names A. atra and Enterographa zonata are proposed here. The simultaneous use of a mitochondrial gene and two nuclear genes led to the detection of what seems to be a case of introgression of a mitochondrion from one species to another (mitochondrion capture; cytoplasmic gene flow) resulting from hybridization. (C) 2008 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:141 / 152
页数:12
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