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Spatial Distribution Patterns of Root-Associated Bacterial Communities Mediated by Root Exudates in Different Aged Ratooning Tea Monoculture Systems

Positive plant–soil feedback depends on beneficial interactions between roots and microbes for nutrient acquisition; growth promotion; and disease suppression. Recent pyrosequencing approaches have provided insight into the rhizosphere bacterial communities in various cropping systems. However; ther...

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Autores principales: Arafat, Yasir, Wei, Xiaoya, Jiang, Yuhang, Chen, Ting, Saqib, Hafiz Sohaib Ahmed, Lin, Sheng, Lin, Wenxiong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5578117/
https://www.ncbi.nlm.nih.gov/pubmed/28786955
http://dx.doi.org/10.3390/ijms18081727
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author Arafat, Yasir
Wei, Xiaoya
Jiang, Yuhang
Chen, Ting
Saqib, Hafiz Sohaib Ahmed
Lin, Sheng
Lin, Wenxiong
author_facet Arafat, Yasir
Wei, Xiaoya
Jiang, Yuhang
Chen, Ting
Saqib, Hafiz Sohaib Ahmed
Lin, Sheng
Lin, Wenxiong
author_sort Arafat, Yasir
collection PubMed
description Positive plant–soil feedback depends on beneficial interactions between roots and microbes for nutrient acquisition; growth promotion; and disease suppression. Recent pyrosequencing approaches have provided insight into the rhizosphere bacterial communities in various cropping systems. However; there is a scarcity of information about the influence of root exudates on the composition of root-associated bacterial communities in ratooning tea monocropping systems of different ages. In Southeastern China; tea cropping systems provide the unique natural experimental environment to compare the distribution of bacterial communities in different rhizo-compartments. High performance liquid chromatography–electrospray ionization–mass spectrometry (HPLC–ESI–MS) was performed to identify and quantify the allelochemicals in root exudates. A high-throughput sequence was used to determine the structural dynamics of the root-associated bacterial communities. Although soil physiochemical properties showed no significant differences in nutrients; long-term tea cultivation resulted in the accumulation of catechin-containing compounds in the rhizosphere and a lowering of pH. Moreover; distinct distribution patterns of bacterial taxa were observed in all three rhizo-compartments of two-year and 30-year monoculture tea; mediated strongly by soil pH and catechin-containing compounds. These results will help to explore the reasons why soil quality and fertility are disturbed in continuous ratooning tea monocropping systems; and to clarify the associated problems.
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spelling pubmed-55781172017-09-05 Spatial Distribution Patterns of Root-Associated Bacterial Communities Mediated by Root Exudates in Different Aged Ratooning Tea Monoculture Systems Arafat, Yasir Wei, Xiaoya Jiang, Yuhang Chen, Ting Saqib, Hafiz Sohaib Ahmed Lin, Sheng Lin, Wenxiong Int J Mol Sci Article Positive plant–soil feedback depends on beneficial interactions between roots and microbes for nutrient acquisition; growth promotion; and disease suppression. Recent pyrosequencing approaches have provided insight into the rhizosphere bacterial communities in various cropping systems. However; there is a scarcity of information about the influence of root exudates on the composition of root-associated bacterial communities in ratooning tea monocropping systems of different ages. In Southeastern China; tea cropping systems provide the unique natural experimental environment to compare the distribution of bacterial communities in different rhizo-compartments. High performance liquid chromatography–electrospray ionization–mass spectrometry (HPLC–ESI–MS) was performed to identify and quantify the allelochemicals in root exudates. A high-throughput sequence was used to determine the structural dynamics of the root-associated bacterial communities. Although soil physiochemical properties showed no significant differences in nutrients; long-term tea cultivation resulted in the accumulation of catechin-containing compounds in the rhizosphere and a lowering of pH. Moreover; distinct distribution patterns of bacterial taxa were observed in all three rhizo-compartments of two-year and 30-year monoculture tea; mediated strongly by soil pH and catechin-containing compounds. These results will help to explore the reasons why soil quality and fertility are disturbed in continuous ratooning tea monocropping systems; and to clarify the associated problems. MDPI 2017-08-08 /pmc/articles/PMC5578117/ /pubmed/28786955 http://dx.doi.org/10.3390/ijms18081727 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Arafat, Yasir
Wei, Xiaoya
Jiang, Yuhang
Chen, Ting
Saqib, Hafiz Sohaib Ahmed
Lin, Sheng
Lin, Wenxiong
Spatial Distribution Patterns of Root-Associated Bacterial Communities Mediated by Root Exudates in Different Aged Ratooning Tea Monoculture Systems
title Spatial Distribution Patterns of Root-Associated Bacterial Communities Mediated by Root Exudates in Different Aged Ratooning Tea Monoculture Systems
title_full Spatial Distribution Patterns of Root-Associated Bacterial Communities Mediated by Root Exudates in Different Aged Ratooning Tea Monoculture Systems
title_fullStr Spatial Distribution Patterns of Root-Associated Bacterial Communities Mediated by Root Exudates in Different Aged Ratooning Tea Monoculture Systems
title_full_unstemmed Spatial Distribution Patterns of Root-Associated Bacterial Communities Mediated by Root Exudates in Different Aged Ratooning Tea Monoculture Systems
title_short Spatial Distribution Patterns of Root-Associated Bacterial Communities Mediated by Root Exudates in Different Aged Ratooning Tea Monoculture Systems
title_sort spatial distribution patterns of root-associated bacterial communities mediated by root exudates in different aged ratooning tea monoculture systems
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5578117/
https://www.ncbi.nlm.nih.gov/pubmed/28786955
http://dx.doi.org/10.3390/ijms18081727
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