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Soil microbial activity is an important factor that drives the material cycle and nutrient conversion of the soil ecosystem.
The sustainability of soil ecosystem service functions depends on the stability of the soil microbiome.
Therefore, the stability of soil microbial communities will affect the sustainable use of soil resources.
In recent years, the threat of soil microbial diversity loss to ecosystems has attracted wide attention in the world, and the related research on microbial diversity and the stability of ecosystem functions has become a hot spot.
Recently, the top journal in the field of microbiology "Microbiome" published online the latest research results of the Specialized metabolic functions of keystone taxa sustain soil microbiome stability by the Soil Microbes and Organic Fertilizer Team of the School of Resources and Environmental Sciences of Nanjing Agricultural University on the specialized metabolic functions of keystone taxa sustain soil microbiome stability.
).
The traditional community stability evaluation is mainly based on two indicators of resistance (Resistance) and resilience (Resilience).
This research is based on the current situation that soil microbial community research mainly uses high-throughput sequencing and generates a large amount of data.
It is innovatively proposed and verified A new Average Variation Degree (AVD) for assessing the stability of the microbial community, indexing the stability of the community, this model has the advantage of not being limited by the number of samples in the group.
The study found that with the decline of soil microbial diversity, the average community variability index increased and the stability decreased.
Constructing a random forest machine learning model to analyze the functional gene composition of the microbial community, and found that the functional genes related to soil "nitrogen metabolism" and "phosphorus metabolism" are the most critical functions that determine the stability of the community; at the same time, constructing a functional gene co-occurrence network to discover these Key functional genes are also members of the key hub of the network.
These hub functional genes decrease with the decline of microbial diversity, resulting in a decrease in the modularity and stability of the co-occurring network.
Further species annotations of the "nitrogen and phosphorus metabolism" functional genes found that the relative abundance of all bacterial groups decreased with the decline of microbial diversity, among which Nitrospira sp (nitrogen metabolism) and Blastomonas (phosphorus metabolism) The representative taxa may be the core members to maintain the stability of the soil microbial community.
The study puts forward the special ecological functions of soil microbes’ nitrogen and phosphorus metabolism and the important role of related bacterial groups in maintaining the stability of microbial communities, which has important guiding significance for deciphering the relationship between soil microbial diversity and system ecological functions.
In the future, regulating the soil microbiome to promote the stable performance of soil ecological functions provides theoretical guidance.
The research was independently completed by Chinese researchers.
Associate Professor Xun Weibing of the School of Resources and Environmental Sciences and Associate Researcher Liu Yunpeng of the Institute of Agricultural Resources and Agricultural Regional Planning of the Chinese Academy of Agricultural Sciences are the co-first authors of the paper, and Professor Zhang Ruifu is the corresponding author of the paper.
Soil Microorganisms and Organic Fertilizers Team graduate student Li Wei, Zhongshan young researcher Dr.
Ren Yi, team Professor Shen Qirong, Professor Xiong Wu, Associate Professor Xu Zhihui and Associate Professor Zhang Nan also participated in the research.
The research was also funded by the National Natural Science Foundation of China, the basic scientific research business fees of central universities, and the China Association for Science and Technology Young Talents Support Project.
The soil microbes and organic fertilizer team Professor Zhang Ruifu’s research team has carried out a series of research work in recent years on the diversity of farmland soil microbes and the structure and functional assembly of rhizosphere microbial communities.
The research results clarified the main driving factors of the structure and function of the soil microbiome ( Soil Biology and Biochemistry, 2015 & 2016; Environmental Microbiology, 2016; Microbiome, 2018), revealing a new mechanism by which the specific function of the microbiome determines the process of community assembly (Nature Communications, 2019), and proposes a mechanism for the structural assembly of the crop rhizosphere microbiome Functional compensation mechanism (Soil Biology and Biochemistry, 2020).
Link to the paper: https://doi.
org/10.
1186/s40168-020-00985-9 Source of the text of this article: the official website of the School of Resources and Environmental Sciences, Nanjing Agricultural University, Plant Biotechnology Pbj Exchange Group in order to help the majority of scientific research work more effectively People obtain relevant information, Plant Biotechnology Pbj specially establishes a WeChat group, Plant Biotechnology Journal submissions and document-related questions, public account release content, and public account submission questions will be concentrated in the group for answers, while encouraging academic exchanges and collision thinking within the group .
In order to ensure a good discussion environment in the group, please add the editor WeChat first, scan the QR code to add, and then we will promptly invite you to join the group.
Tips: When adding the editor WeChat and after joining the group, please be sure to note the school or unit + name, and the PI should be noted at the end, and we will invite you to join the PI group.
The sustainability of soil ecosystem service functions depends on the stability of the soil microbiome.
Therefore, the stability of soil microbial communities will affect the sustainable use of soil resources.
In recent years, the threat of soil microbial diversity loss to ecosystems has attracted wide attention in the world, and the related research on microbial diversity and the stability of ecosystem functions has become a hot spot.
Recently, the top journal in the field of microbiology "Microbiome" published online the latest research results of the Specialized metabolic functions of keystone taxa sustain soil microbiome stability by the Soil Microbes and Organic Fertilizer Team of the School of Resources and Environmental Sciences of Nanjing Agricultural University on the specialized metabolic functions of keystone taxa sustain soil microbiome stability.
).
The traditional community stability evaluation is mainly based on two indicators of resistance (Resistance) and resilience (Resilience).
This research is based on the current situation that soil microbial community research mainly uses high-throughput sequencing and generates a large amount of data.
It is innovatively proposed and verified A new Average Variation Degree (AVD) for assessing the stability of the microbial community, indexing the stability of the community, this model has the advantage of not being limited by the number of samples in the group.
The study found that with the decline of soil microbial diversity, the average community variability index increased and the stability decreased.
Constructing a random forest machine learning model to analyze the functional gene composition of the microbial community, and found that the functional genes related to soil "nitrogen metabolism" and "phosphorus metabolism" are the most critical functions that determine the stability of the community; at the same time, constructing a functional gene co-occurrence network to discover these Key functional genes are also members of the key hub of the network.
These hub functional genes decrease with the decline of microbial diversity, resulting in a decrease in the modularity and stability of the co-occurring network.
Further species annotations of the "nitrogen and phosphorus metabolism" functional genes found that the relative abundance of all bacterial groups decreased with the decline of microbial diversity, among which Nitrospira sp (nitrogen metabolism) and Blastomonas (phosphorus metabolism) The representative taxa may be the core members to maintain the stability of the soil microbial community.
The study puts forward the special ecological functions of soil microbes’ nitrogen and phosphorus metabolism and the important role of related bacterial groups in maintaining the stability of microbial communities, which has important guiding significance for deciphering the relationship between soil microbial diversity and system ecological functions.
In the future, regulating the soil microbiome to promote the stable performance of soil ecological functions provides theoretical guidance.
The research was independently completed by Chinese researchers.
Associate Professor Xun Weibing of the School of Resources and Environmental Sciences and Associate Researcher Liu Yunpeng of the Institute of Agricultural Resources and Agricultural Regional Planning of the Chinese Academy of Agricultural Sciences are the co-first authors of the paper, and Professor Zhang Ruifu is the corresponding author of the paper.
Soil Microorganisms and Organic Fertilizers Team graduate student Li Wei, Zhongshan young researcher Dr.
Ren Yi, team Professor Shen Qirong, Professor Xiong Wu, Associate Professor Xu Zhihui and Associate Professor Zhang Nan also participated in the research.
The research was also funded by the National Natural Science Foundation of China, the basic scientific research business fees of central universities, and the China Association for Science and Technology Young Talents Support Project.
The soil microbes and organic fertilizer team Professor Zhang Ruifu’s research team has carried out a series of research work in recent years on the diversity of farmland soil microbes and the structure and functional assembly of rhizosphere microbial communities.
The research results clarified the main driving factors of the structure and function of the soil microbiome ( Soil Biology and Biochemistry, 2015 & 2016; Environmental Microbiology, 2016; Microbiome, 2018), revealing a new mechanism by which the specific function of the microbiome determines the process of community assembly (Nature Communications, 2019), and proposes a mechanism for the structural assembly of the crop rhizosphere microbiome Functional compensation mechanism (Soil Biology and Biochemistry, 2020).
Link to the paper: https://doi.
org/10.
1186/s40168-020-00985-9 Source of the text of this article: the official website of the School of Resources and Environmental Sciences, Nanjing Agricultural University, Plant Biotechnology Pbj Exchange Group in order to help the majority of scientific research work more effectively People obtain relevant information, Plant Biotechnology Pbj specially establishes a WeChat group, Plant Biotechnology Journal submissions and document-related questions, public account release content, and public account submission questions will be concentrated in the group for answers, while encouraging academic exchanges and collision thinking within the group .
In order to ensure a good discussion environment in the group, please add the editor WeChat first, scan the QR code to add, and then we will promptly invite you to join the group.
Tips: When adding the editor WeChat and after joining the group, please be sure to note the school or unit + name, and the PI should be noted at the end, and we will invite you to join the PI group.
