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Title: A molecular reappraisal of Nimbospora (Halosphaeriaceae, Microascales) and a new genus Ebullia for N. octonae.
Authors: Ying Chu;Siti Aisyah Alias;Mohammed Rizman-Idid;Sheng-Yu Guo;Ka-Lai Pang
Contributors: 國立臺灣海洋大學:海洋生物研究所
Date: 2014
Issue Date: 2018-04-17T07:27:20Z
Publisher: Mycoscience
Abstract: Abstract: Nimbospora is a genus in the Halosphaeriaceae with three species: N. effusa (the type species), N. bipolaris and N. octonae. All species have two-celled ascospores with a prominent sheath. A second type of appendage is present in two species, a single tuft of fibrillar appendages is present in N. effusa and two occur in N. bipolaris. Nimbospora effusa and N. bipolaris are morphologically similar, but there are major morphological differences in ascomatal morphology between N. effusa/N. bipolaris and N. octonae. In this study, we investigated the morphology of N. effusa and N. octonae and the phylogenetic relationships of the three Nimbospora species based on partial sequences of 18S and 28S rRNA genes. Bayesian analysis suggested that Nimbospora is not monophyletic. Nimbospora effusa groups with N. bipolaris in a well-supported clade, with Naufragella spinibarbata forming a sister group. Nimbospora octonae, however, clusters with Haligena elaterophora in a separate, well-supported clade. The ascomata of N. octonae differ from those of N. effusa and N. bipolaris by their thick peridium, and ascospores that lack equatorial tufts of appendages but possess polar and equatorial subulate appendages after the sheath is dissolved. Based on these characters and the correlating phylogenetic distance, the new genus Ebullia is established to accommodate N. octonae.
Relation: 56(1)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45923
Appears in Collections:[海洋生物研究所] 期刊論文

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