期刊
MYCOLOGIA
卷 100, 期 3, 页码 496-510出版社
TAYLOR & FRANCIS INC
DOI: 10.3852/07-181R
关键词
beta-tubulin; ITS; LSU; phylogeny; vector
类别
资金
- National Research Foundation (NRF)
- NRF/DST Centre of Excellence in Tree Health Biotechnology (CTHB)
Ophiostoma (Ophiostomatales) represents a large genus of fungi mainly known from associations with bark beetles (Curculionidae: Scolytinae) infestsing conifers in the northern hemisphere. Few southern hemisphere native species are known, and the five species that consistently occur in the infructescences of Protea spp. in South Africa are ecologically unusual. Little is known about the vectors of Ophiostoma spp. from Protea infructescences, however recent studies have considered the possible role of insects and mites in the distribution of these exceptional fungi. In this study we describe a new species of Ophiostoma and a new Sporothrix spp. with affinities to Ophiostoma, both initially isolated from mites associated with Protea spp. They are described as Ophiostoma gemellus sp. nov. and Sporothrix variecibatus sp. nov. based on their morphology and comparisons of DNA sequence data of the 28S ribosomal, beta-tubulin and internal transcribed spacer (ITS1, 5.8S, ITS2) regions. DNA sequences of S. variecibatus were identical to those of a Sporothrix isolate obtained from Eucalyptus leaf litter in the same area in which S. variecibatus occurs in Protea infructescences. Results of this study add evidence to the view that mites are the vectors of Ophistoma. spp. that colonize Protea infructescences. The), also show that DNA sequence comparisons are likely to reveal additional cryptic species of Ophiostoma in this unusual niche.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据