New species and records of Bipolaris and Curvularia from Thailand

© Guizhou Academy of Agricultural Sciences. Several Bipolaris and Curvularia spp. were collected from different disease symptoms of Poaceae in Thailand. Phylogenetic analyses based on DNA sequence data of the internal transcribed spacer region and intervening 5.8S nrRNA gene, and partial fragments o...

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Main Authors: Y. Marin-Felix, C. Senwanna, R. Cheewangkoon, P. W. Crous
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/43576
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-435762018-04-25T07:37:12Z New species and records of Bipolaris and Curvularia from Thailand Y. Marin-Felix C. Senwanna R. Cheewangkoon P. W. Crous Agricultural and Biological Sciences Arts and Humanities © Guizhou Academy of Agricultural Sciences. Several Bipolaris and Curvularia spp. were collected from different disease symptoms of Poaceae in Thailand. Phylogenetic analyses based on DNA sequence data of the internal transcribed spacer region and intervening 5.8S nrRNA gene, and partial fragments of the glyceraldehyde-3-phosphate dehydrogenase and the translation elongation factor 1-a genes, demonstrated that these isolates represent one new species of Bipolaris, B. brachiariae, and five new species of Curvularia, i.e. C. chiangmaiensis, C. dactyloctenicola, C. nodosa, C. pseudobrachyspora, and C. variabilis. Bipolaris brachiariae is related to B. heliconiae, B. maydis, and B. saccharicola, but produces shorter conidiophores and conidia. Curvularia chiangmaiensis is characterized by very long conidiophores to 2 mm. Curvularia dactyloctenicola is closely related to C. chiangmaiensis, but can easily be distinguished by the size of its conidiophores and conidia. Curvularia nodosa is related to C. hawaiiensis and C. dactyloctenii, but it produces abundantly knotted hyphae, which were not observed in the other two species, as well as shorter conidia with fewer septa. Curvularia pseudobrachyspora is related to C. brachyspora, but differs in the size of its conidiophores. Finally, Curvularia variabilis can be easily distinguished by its highly variable conidia. Furthermore, the description of B. oryzae is emended to include two isolates belonging to this species from Thailand that produce much longer conidiophores and conidia with fewer septa than observed in previous descriptions. The present study is also the first report of Bipolaris bicolor, B. setariae and B. yamadae from Thailand. Moreover, new hosts are reported for B. bicolor (Eleusine indica), B. setariae (Imperata cylindrica), and Curvularia verruculosa (Eleusine indica). 2018-01-24T03:50:16Z 2018-01-24T03:50:16Z 2017-10-18 Journal 20777019 20777000 2-s2.0-85032293395 10.5943/mycosphere/8/9/11 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85032293395&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/43576
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Agricultural and Biological Sciences
Arts and Humanities
spellingShingle Agricultural and Biological Sciences
Arts and Humanities
Y. Marin-Felix
C. Senwanna
R. Cheewangkoon
P. W. Crous
New species and records of Bipolaris and Curvularia from Thailand
description © Guizhou Academy of Agricultural Sciences. Several Bipolaris and Curvularia spp. were collected from different disease symptoms of Poaceae in Thailand. Phylogenetic analyses based on DNA sequence data of the internal transcribed spacer region and intervening 5.8S nrRNA gene, and partial fragments of the glyceraldehyde-3-phosphate dehydrogenase and the translation elongation factor 1-a genes, demonstrated that these isolates represent one new species of Bipolaris, B. brachiariae, and five new species of Curvularia, i.e. C. chiangmaiensis, C. dactyloctenicola, C. nodosa, C. pseudobrachyspora, and C. variabilis. Bipolaris brachiariae is related to B. heliconiae, B. maydis, and B. saccharicola, but produces shorter conidiophores and conidia. Curvularia chiangmaiensis is characterized by very long conidiophores to 2 mm. Curvularia dactyloctenicola is closely related to C. chiangmaiensis, but can easily be distinguished by the size of its conidiophores and conidia. Curvularia nodosa is related to C. hawaiiensis and C. dactyloctenii, but it produces abundantly knotted hyphae, which were not observed in the other two species, as well as shorter conidia with fewer septa. Curvularia pseudobrachyspora is related to C. brachyspora, but differs in the size of its conidiophores. Finally, Curvularia variabilis can be easily distinguished by its highly variable conidia. Furthermore, the description of B. oryzae is emended to include two isolates belonging to this species from Thailand that produce much longer conidiophores and conidia with fewer septa than observed in previous descriptions. The present study is also the first report of Bipolaris bicolor, B. setariae and B. yamadae from Thailand. Moreover, new hosts are reported for B. bicolor (Eleusine indica), B. setariae (Imperata cylindrica), and Curvularia verruculosa (Eleusine indica).
format Journal
author Y. Marin-Felix
C. Senwanna
R. Cheewangkoon
P. W. Crous
author_facet Y. Marin-Felix
C. Senwanna
R. Cheewangkoon
P. W. Crous
author_sort Y. Marin-Felix
title New species and records of Bipolaris and Curvularia from Thailand
title_short New species and records of Bipolaris and Curvularia from Thailand
title_full New species and records of Bipolaris and Curvularia from Thailand
title_fullStr New species and records of Bipolaris and Curvularia from Thailand
title_full_unstemmed New species and records of Bipolaris and Curvularia from Thailand
title_sort new species and records of bipolaris and curvularia from thailand
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85032293395&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/43576
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