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Response of soil microbial community to plant composition changes in broad-leaved forests of the karst area in Mid-Subtropical China

The rapid growth and expansion ofCryptomeria japonica (Thunb. ex L. f.) D. Don in karst area strongly affects plant composition of native deciduous broad-leaved forest, which seriously threat ecosystem function and service. Given the importance of soil microorganisms in regulating nutrients cycling...

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Autores principales: Liu, Liling, Zhu, Ninghua, Zhou, Guangyi, Dang, Peng, Yang, Xiaowei, Qiu, Liqiong, Huang, Muyi, Gong, Yingyun, Zhao, Suya, Chen, Jie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8908884/
https://www.ncbi.nlm.nih.gov/pubmed/35282286
http://dx.doi.org/10.7717/peerj.12739
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author Liu, Liling
Zhu, Ninghua
Zhou, Guangyi
Dang, Peng
Yang, Xiaowei
Qiu, Liqiong
Huang, Muyi
Gong, Yingyun
Zhao, Suya
Chen, Jie
author_facet Liu, Liling
Zhu, Ninghua
Zhou, Guangyi
Dang, Peng
Yang, Xiaowei
Qiu, Liqiong
Huang, Muyi
Gong, Yingyun
Zhao, Suya
Chen, Jie
author_sort Liu, Liling
collection PubMed
description The rapid growth and expansion ofCryptomeria japonica (Thunb. ex L. f.) D. Don in karst area strongly affects plant composition of native deciduous broad-leaved forest, which seriously threat ecosystem function and service. Given the importance of soil microorganisms in regulating nutrients cycling and plant species coexistence, understanding soil microbial attributes and their relationships with soil and vegetation features in forests harboring different C. japonica abundance will help understanding the drivers of ecosystem function changes. Here we examined the diversity and composition of soil bacterial and fungal communities and their correlations with plant diversity as well as soil physicochemical properties in karst broad-leaved forests with different relative abundances of C. japonica (i.e., a high, moderate, low and no proportion level with a stem density of 1,487, 538, 156 and 0 plant/hm(2), respectively) in Mid-Subtropical China. We found that soil pH decreased while soil water content (SWC), total nitrogen (TN), total phosphorus (TP) and total potassium (TK) tended to increase with the increase in C. japonica abundance. In contrast, soil available nitrogen (AN), available phosphorus (AP) and available potassium (AK) content declined by 26.1%∼49.3% under the high level of C. japonica abundance. A gradual decrease in relative abundance of Acidobacteria and Chloroflexi while a pronounced increase in relative abundance of Ascomycota and Basidiomycota were observed with increase of C. japonica abundance. Alternations in bacterial composition were closely related to changes in AP and AK, while the change of fungal structure was mainly related to SWC, soil organic carbon (SOC) and pH, indicating that bacterial community was sensitive to declines in soil available nutrients and fungal structure was sensitive to changes in soil physicochemical properties (i.e., pH and SWC) and organic carbon resource. Understory plants had the highest α-diversity in forest containing moderate abundance of C. japonica, which might be related to the high bacterial diversity. Our findings suggest conservation of soil bacterial and fungal taxa that are responsible for nutrients availability and carbon sequestration is of great significance for improving the resistance of natural deciduous broad-leaved forests to the rapid spread of C. japonica in karst areas. Moreover, Acidobacteria, Chloroflexi, Ascomycota and Basidiomycota are potential indicators for soil properties changes, which should be taken into consideration in karst forest managements.
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spelling pubmed-89088842022-03-11 Response of soil microbial community to plant composition changes in broad-leaved forests of the karst area in Mid-Subtropical China Liu, Liling Zhu, Ninghua Zhou, Guangyi Dang, Peng Yang, Xiaowei Qiu, Liqiong Huang, Muyi Gong, Yingyun Zhao, Suya Chen, Jie PeerJ Ecology The rapid growth and expansion ofCryptomeria japonica (Thunb. ex L. f.) D. Don in karst area strongly affects plant composition of native deciduous broad-leaved forest, which seriously threat ecosystem function and service. Given the importance of soil microorganisms in regulating nutrients cycling and plant species coexistence, understanding soil microbial attributes and their relationships with soil and vegetation features in forests harboring different C. japonica abundance will help understanding the drivers of ecosystem function changes. Here we examined the diversity and composition of soil bacterial and fungal communities and their correlations with plant diversity as well as soil physicochemical properties in karst broad-leaved forests with different relative abundances of C. japonica (i.e., a high, moderate, low and no proportion level with a stem density of 1,487, 538, 156 and 0 plant/hm(2), respectively) in Mid-Subtropical China. We found that soil pH decreased while soil water content (SWC), total nitrogen (TN), total phosphorus (TP) and total potassium (TK) tended to increase with the increase in C. japonica abundance. In contrast, soil available nitrogen (AN), available phosphorus (AP) and available potassium (AK) content declined by 26.1%∼49.3% under the high level of C. japonica abundance. A gradual decrease in relative abundance of Acidobacteria and Chloroflexi while a pronounced increase in relative abundance of Ascomycota and Basidiomycota were observed with increase of C. japonica abundance. Alternations in bacterial composition were closely related to changes in AP and AK, while the change of fungal structure was mainly related to SWC, soil organic carbon (SOC) and pH, indicating that bacterial community was sensitive to declines in soil available nutrients and fungal structure was sensitive to changes in soil physicochemical properties (i.e., pH and SWC) and organic carbon resource. Understory plants had the highest α-diversity in forest containing moderate abundance of C. japonica, which might be related to the high bacterial diversity. Our findings suggest conservation of soil bacterial and fungal taxa that are responsible for nutrients availability and carbon sequestration is of great significance for improving the resistance of natural deciduous broad-leaved forests to the rapid spread of C. japonica in karst areas. Moreover, Acidobacteria, Chloroflexi, Ascomycota and Basidiomycota are potential indicators for soil properties changes, which should be taken into consideration in karst forest managements. PeerJ Inc. 2022-03-07 /pmc/articles/PMC8908884/ /pubmed/35282286 http://dx.doi.org/10.7717/peerj.12739 Text en ©2022 Liu et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Ecology
Liu, Liling
Zhu, Ninghua
Zhou, Guangyi
Dang, Peng
Yang, Xiaowei
Qiu, Liqiong
Huang, Muyi
Gong, Yingyun
Zhao, Suya
Chen, Jie
Response of soil microbial community to plant composition changes in broad-leaved forests of the karst area in Mid-Subtropical China
title Response of soil microbial community to plant composition changes in broad-leaved forests of the karst area in Mid-Subtropical China
title_full Response of soil microbial community to plant composition changes in broad-leaved forests of the karst area in Mid-Subtropical China
title_fullStr Response of soil microbial community to plant composition changes in broad-leaved forests of the karst area in Mid-Subtropical China
title_full_unstemmed Response of soil microbial community to plant composition changes in broad-leaved forests of the karst area in Mid-Subtropical China
title_short Response of soil microbial community to plant composition changes in broad-leaved forests of the karst area in Mid-Subtropical China
title_sort response of soil microbial community to plant composition changes in broad-leaved forests of the karst area in mid-subtropical china
topic Ecology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8908884/
https://www.ncbi.nlm.nih.gov/pubmed/35282286
http://dx.doi.org/10.7717/peerj.12739
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