In:
MycoKeys, Pensoft Publishers, Vol. 73 ( 2020-10-08), p. 109-132
Abstract:
The Harzianum clade of Trichoderma comprises many species, which are associated with a wide variety of substrates. In this study, four new species of Trichoderma , namely T. lentinulae , T. vermifimicola , T. xixiacum , and T. zelobreve , were encountered from a fruiting body and compost of Lentinula , soil, and vermicompost. Their colony and mycelial morphology, including features of asexual states, were described. For each species, their DNA sequences were obtained from three loci, the internal transcribed spacer (ITS) regions of the ribosomal DNA, the gene encoding the second largest nuclear RNA polymerase subunit (RPB2), the translation elongation factor 1-α encoding gene (TEF1-α). The analysis combining sequences of the three gene regions distinguished four new species in the Harzianum clade of Trichoderma . Among them, T. lentinulae and T. xixiacum clustered with T. lixii , from which these new species differ in having shorter phialides and smaller conidia. Additionally, T. lentinulae differs from T. xixiacum in forming phialides with inequilateral to a strongly-curved apex, cultural characteristics, and slow growth on PDA. Trichoderma vermifimicola is closely related to T. simmonsii , but it differs from the latter by producing phialides in verticillate whorls and smaller conidia. Trichoderma zelobreve is the sister species of T. breve but is distinguished from T. breve by producing shorter and narrower phialides, smaller conidia, and by forming concentric zones on agar plates. This study updates our knowledge of species diversity of Trichoderma .
Type of Medium:
Online Resource
ISSN:
1314-4049
,
1314-4057
DOI:
10.3897/mycokeys.73.51424
DOI:
10.3897/mycokeys.73.51424.figure1
DOI:
10.3897/mycokeys.73.51424.figure1
DOI:
10.3897/mycokeys.73.51424.figure2
DOI:
10.3897/mycokeys.73.51424.figure3
DOI:
10.3897/mycokeys.73.51424.figure4
DOI:
10.3897/mycokeys.73.51424.figure5
DOI:
10.3897/mycokeys.73.51424.suppl1
DOI:
10.3897/mycokeys.73.51424.suppl2
DOI:
10.3897/mycokeys.73.51424.suppl3
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2020
detail.hit.zdb_id:
2630648-7
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