Geographical Differences Weaken the Convergence Effect of the Rhizosphere Bacteria of Rubber Trees

The rhizosphere has been observed to both enrich and deplete soil microorganisms, but it remains unclear whether rhizosphere microorganisms of the same species exhibit convergence in different climatic regions. This study employed high-throughput sequencing technology to analyze the bacterial commun...

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Main Authors: Xinnuo Xu, Yaqing Wei, Guoyu Lan
Format: Article
Language:English
Published: MDPI AG 2024-02-01
Series:Forests
Subjects:
Online Access:https://www.mdpi.com/1999-4907/15/3/415
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author Xinnuo Xu
Yaqing Wei
Guoyu Lan
author_facet Xinnuo Xu
Yaqing Wei
Guoyu Lan
author_sort Xinnuo Xu
collection DOAJ
description The rhizosphere has been observed to both enrich and deplete soil microorganisms, but it remains unclear whether rhizosphere microorganisms of the same species exhibit convergence in different climatic regions. This study employed high-throughput sequencing technology to analyze the bacterial communities in the soil, rhizosphere, and rhizoplane of rubber trees across varying climatic regions. The findings revealed the following: Firstly, the rhizoplane bacteria demonstrated a convergent effect. In Hainan and Xishuangbanna, two core operational classification units (OTUs) were enriched from the soil, while four core OTUs were depleted, indicating that the rhizoplane bacteria were influenced by host regulation and exhibited a certain degree of convergence due to the rhizosphere effect. Secondly, the rhizoplane bacteria exhibited a geographic distribution pattern, with significant differences observed in different climatic regions. Notably, there were significant variations in α- and β-diversity, with Xishuangbanna displaying significantly higher diversity compared to Hainan. Moreover, significant differences were observed at the phylum level in terms of composition. Temperature, soil organic matter, soil total nitrogen, and total phosphorus were identified as the primary factors contributing to these differences. In conclusion, although some convergence was observed in the rhizoplane bacteria, the influence of geographic differences weakened this effect.
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spelling doaj.art-669e72c4d3c14261981826812b356e872024-03-27T13:41:30ZengMDPI AGForests1999-49072024-02-0115341510.3390/f15030415Geographical Differences Weaken the Convergence Effect of the Rhizosphere Bacteria of Rubber TreesXinnuo Xu0Yaqing Wei1Guoyu Lan2Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road, Haikou 571737, ChinaRubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road, Haikou 571737, ChinaRubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road, Haikou 571737, ChinaThe rhizosphere has been observed to both enrich and deplete soil microorganisms, but it remains unclear whether rhizosphere microorganisms of the same species exhibit convergence in different climatic regions. This study employed high-throughput sequencing technology to analyze the bacterial communities in the soil, rhizosphere, and rhizoplane of rubber trees across varying climatic regions. The findings revealed the following: Firstly, the rhizoplane bacteria demonstrated a convergent effect. In Hainan and Xishuangbanna, two core operational classification units (OTUs) were enriched from the soil, while four core OTUs were depleted, indicating that the rhizoplane bacteria were influenced by host regulation and exhibited a certain degree of convergence due to the rhizosphere effect. Secondly, the rhizoplane bacteria exhibited a geographic distribution pattern, with significant differences observed in different climatic regions. Notably, there were significant variations in α- and β-diversity, with Xishuangbanna displaying significantly higher diversity compared to Hainan. Moreover, significant differences were observed at the phylum level in terms of composition. Temperature, soil organic matter, soil total nitrogen, and total phosphorus were identified as the primary factors contributing to these differences. In conclusion, although some convergence was observed in the rhizoplane bacteria, the influence of geographic differences weakened this effect.https://www.mdpi.com/1999-4907/15/3/415rubber treebacteriarhizoplanerhizospheregeographical differences
spellingShingle Xinnuo Xu
Yaqing Wei
Guoyu Lan
Geographical Differences Weaken the Convergence Effect of the Rhizosphere Bacteria of Rubber Trees
Forests
rubber tree
bacteria
rhizoplane
rhizosphere
geographical differences
title Geographical Differences Weaken the Convergence Effect of the Rhizosphere Bacteria of Rubber Trees
title_full Geographical Differences Weaken the Convergence Effect of the Rhizosphere Bacteria of Rubber Trees
title_fullStr Geographical Differences Weaken the Convergence Effect of the Rhizosphere Bacteria of Rubber Trees
title_full_unstemmed Geographical Differences Weaken the Convergence Effect of the Rhizosphere Bacteria of Rubber Trees
title_short Geographical Differences Weaken the Convergence Effect of the Rhizosphere Bacteria of Rubber Trees
title_sort geographical differences weaken the convergence effect of the rhizosphere bacteria of rubber trees
topic rubber tree
bacteria
rhizoplane
rhizosphere
geographical differences
url https://www.mdpi.com/1999-4907/15/3/415
work_keys_str_mv AT xinnuoxu geographicaldifferencesweakentheconvergenceeffectoftherhizospherebacteriaofrubbertrees
AT yaqingwei geographicaldifferencesweakentheconvergenceeffectoftherhizospherebacteriaofrubbertrees
AT guoyulan geographicaldifferencesweakentheconvergenceeffectoftherhizospherebacteriaofrubbertrees