期刊
MYCOLOGICAL PROGRESS
卷 15, 期 1, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11557-015-1152-x
关键词
Ectomycorrhizal; Neotropics; Pisonieae; Phylogeny; Tomentella; Tropical dry forest
类别
资金
- MEXBOL network thru CONACYT [1251085]
- [PAPIIT IN218210]
- [PAPIIT IN223114]
The /tomentella-thelephora lineage is one of the most highly dominant clades among ectomycorrhizal communities worldwide. Despite its importance as a root symbiont, its fruit bodies are inconspicuous and rarely found. Knowledge regarding the diversity of Tomentella in the Neotropics is scarce, and is based largely on environmental samples. Here, we describe a new species, Tomentella brunneoincrustata, including its basidiocarp morphology, mycorrhizal anatomy, and ecology. Because knowledge of Tomentella in Mexico is scarce, we provide the first phylogenetic analysis of this genus in the country. We sequenced the nrITS region of the fungal samples, and sequenced the rbcL and trnL regions to identify the host plant. The phylogenetic analyses were conducted by Bayesian inference. The Bayesian analysis showed that several paraphyletic clades within the lineage /tomentellathelephora are associated with Pisonieae present across tropical regions of the world. However, the ectomycorrhizae sequences from Puerto Rico, Florida, Dominica, and Mexico constituted a well-supported monophyletic clade that we denote as the Pisonieae-associated Neotropical Tomentella clade. Within this clade, T. brunneoincrustata was characterized as follows: a thin crustose, strongly attached to the substrate basidiome; concolorous subiculum, undifferentiated and sterile margin; two types of subiculum hyphae; and small (<8 mu m) globose to ellipsoid spores. This species develops in tropical dry forests, where it associates with hosts in the Pisonieae tribe within the Nyctaginaceae. The remaining Tomentella fruit body vouchers collected in temperate forests of Mexico belonged to clades related to T. atramentaria, T. pilosa, T. muricata, T. fuscocinerea, T. stuposa, T. punicea, T. atroarenicolor, T. bryophila, and T. lateritia. Five fruit body vouchers had unique sequences forming independent and unknown clades of Tomentella.
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