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浙江大学学报（农业与生命科学版）
浙江大学学报(农业与生命科学版)  2004, Vol. 30 Issue (4): 466-466    
论文     
Biodiversity and distribution of Hypocrea/Trichoderma species in New Zealand
Sarah L Dodd　 Alison Stewart
Sarah L Dodd（New Zealand Institute for Crop and Food Research Limited, Private Bag 4704,Christchurch, New Zealand）　　　　　　
Alison Stewart（National Centre for Advanced Bio-Protection Technologies, P O Box 84, Lincoln University, Canterbury, New Zealand）
 全文: PDF(67 KB)  
Abstract: With increased imports of foreign microbes either as commercial biocontrol products or for the purposes of research, there is potentially an increased threat to indigenous beneficial microflora. In the present study, indigenous species of the fungal genus Hypocrea/Trichoderma are being used as a model system to determine the impact of foreign microbes on the native microflora of New Zealand. In order to protect such microflora, one has to first be aware of what is currently present and what sites, if any,are most vulnerable. A preliminary survey for the presence and diversity of species of Hypocrea/Trichoderma is currently underway in New Zealand and samples are being assessed from forest soils,agricultural soils, orchards, garden soils, sclerotia of various plant pathogens and pasture land. To date 238 isolates have been identified using both morphological characters and DNA sequence data from the ITS regions of the ribosomal gene cluster (ITS1 & ITS2) and, in some instances, sequence of the elongation factor gene (EF1-α) . Isolates were found to represent 16 known species plus three species as yet undescribed. In forest soils T. harzianum /T. inhamatum (31%) and T. viride (29%)followed by T. fertile (13%), were clearly the most abundant species and the remaining five species found in forests ( T. atroviride, T. koningii, T. aureoviride, H. cf. flavovirens anamorph and one unknown) each accounting for ＜8% of the total. Dominance by the species T. harzianum/inhamatum is consistent with studies done in South-East Asia, a mid-European primeval floodplainforest and Moscow. In contrast, when isolations were conducted with a bias for biocontrol capabilities it was found that the species T. atroviride (29%), T. koningii (17%), T. harzianum (15%)and T. viride (12%) dominated respectively. This survey is currently ongoing in New Zealand.Future studies will monitor indigenous species and strains following inoculation of specific microbes to assess the impact of the introduced microbe on the natural ecosystem.……
出版日期: 2004-07-12
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引用本文:

Sarah L Dodd　 Alison Stewart. Biodiversity and distribution of Hypocrea/Trichoderma species in New Zealand[J]. 浙江大学学报(农业与生命科学版), 2004, 30(4): 466-466.

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https://www.zjujournals.com/agr/CN/Y2004/V30/I4/466

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