کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6372784 1321059 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The impacts of treatment with biocontrol fungus (Phlebiopsis gigantea) on bacterial diversity in Norway spruce stumps
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
The impacts of treatment with biocontrol fungus (Phlebiopsis gigantea) on bacterial diversity in Norway spruce stumps
چکیده انگلیسی

The biocontrol agent Phlebiopsis gigantea has been intensively applied to the surface of Picea abies stumps to control Heterobasidion root rot. But little is known about the possible impact of this treatment on the resident bacteria community in the stumps. High throughput DNA bar-coded pyrosequencing was used to characterize the diversity of bacteria in the stumps of P. abies at 1, 6 and 13 years after treatment with P. gigantea. The sequences were classified into 12 phyla and 160 genera, of which Proteobacteria and Acidobacteria were the most abundant groups over time. Moreover, at the initial stages of decay, Proteobacteria were the most abundant whereas Acidobacteria were the most common at advanced stages of decay. Treatment with P. gigantea led to significant increase of the genus Acidobacteria-Gp1 at 1 year after treatment. The analysis of observed and estimated operational taxonomic units (OTUs) as well as diversity indices revealed that P. gigantea treatment significantly decreased the initial bacterial richness in the stumps, but the bacterial community gradually recovered and the negative effects of P. gigantea was attenuated. These results provide additional insight on the risk assessment as well as environmental impact on the long-term use of P. gigantea in the control of Heterobasidion root rot in conifer forests.

Venn diagrams showing unique and shared OTUs at 0.03 genetic distance between the treated and control stumps 1 year (a), 6 years (b) and 13 years (c) after P. gigantea treatment.Highlights► Phlebiopsis gigantea is a biological control agent against Heterobasidion root rot. ► We report the impact of long-term use of P. gigantea on bacterial community on Norway spruce stumps by pyrosequencing. ► P. gigantea treatment significantly decreased the initial bacterial richness in the stumps. ► The effects of P. gigantea on bacterial community were attenuated over time.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biological Control - Volume 64, Issue 3, March 2013, Pages 238-246
نویسندگان
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