Tongyan Yao, Franziska Bucka, Ingrid Kögel-Knabner, Claudia Knief
{"title":"有机质类型和土壤质地影响早期土壤结构形成过程中的原核生物群落","authors":"Tongyan Yao, Franziska Bucka, Ingrid Kögel-Knabner, Claudia Knief","doi":"10.1002/jpln.202300142","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Background</h3>\n \n <p>Organic matter (OM) serves as substrate for heterotrophic microbial growth. Soil structure supports microbial life by providing various niches for colonization. Microorganisms in turn contribute to soil structure formation.</p>\n </section>\n \n <section>\n \n <h3> Aims</h3>\n \n <p>We aim to understand how OM of different origin and soil texture affect prokaryotic community structure and the implications on early-stage soil structure formation.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>An artificial soil incubation experiment was conducted with different types of OM, including bacterial necromass and particulate organic matter (POM) of larger or smaller size (sPOM). The mineral composition was modified to obtain a clay loam, loam, and sandy loam texture. The abundance and composition of a natural microbial inoculum were determined after 30 days of incubation by real-time PCR and 16S rRNA gene sequencing, respectively.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>The different OM types had a stronger effect on the prokaryotic community structure and abundance than texture. The necromass treatment supported the most distinct prokaryotic community with the highest abundance and lowest diversity, as well as the most intense formation of water-stable microaggregates in comparison to POM and sPOM treatments. Abundant bacterial taxa in all treatments are known to include extracellular polymeric substance producers, indicating that functional redundancy warrants aggregation by gluing agents. Texture-related effects were most consistent in the POM treatment, where larger prokaryotic populations were observed in the coarser-textured soils with fewer but larger soil pores and lower soil water content.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p>Differences in prokaryotic community structure and abundance due to OM source indicate that aggregation is dependent on different ecological strategists, a POM-degrading population that promotes aggregation and contributes to necromass formation, and a necromass-degrading consortium in which bacteria play a major role.</p>\n </section>\n </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"187 1","pages":"89-103"},"PeriodicalIF":2.6000,"publicationDate":"2023-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.202300142","citationCount":"0","resultStr":"{\"title\":\"Organic matter type and soil texture shape prokaryotic communities during early-stage soil structure formation\",\"authors\":\"Tongyan Yao, Franziska Bucka, Ingrid Kögel-Knabner, Claudia Knief\",\"doi\":\"10.1002/jpln.202300142\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Background</h3>\\n \\n <p>Organic matter (OM) serves as substrate for heterotrophic microbial growth. Soil structure supports microbial life by providing various niches for colonization. Microorganisms in turn contribute to soil structure formation.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Aims</h3>\\n \\n <p>We aim to understand how OM of different origin and soil texture affect prokaryotic community structure and the implications on early-stage soil structure formation.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Methods</h3>\\n \\n <p>An artificial soil incubation experiment was conducted with different types of OM, including bacterial necromass and particulate organic matter (POM) of larger or smaller size (sPOM). The mineral composition was modified to obtain a clay loam, loam, and sandy loam texture. The abundance and composition of a natural microbial inoculum were determined after 30 days of incubation by real-time PCR and 16S rRNA gene sequencing, respectively.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>The different OM types had a stronger effect on the prokaryotic community structure and abundance than texture. The necromass treatment supported the most distinct prokaryotic community with the highest abundance and lowest diversity, as well as the most intense formation of water-stable microaggregates in comparison to POM and sPOM treatments. Abundant bacterial taxa in all treatments are known to include extracellular polymeric substance producers, indicating that functional redundancy warrants aggregation by gluing agents. Texture-related effects were most consistent in the POM treatment, where larger prokaryotic populations were observed in the coarser-textured soils with fewer but larger soil pores and lower soil water content.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Conclusions</h3>\\n \\n <p>Differences in prokaryotic community structure and abundance due to OM source indicate that aggregation is dependent on different ecological strategists, a POM-degrading population that promotes aggregation and contributes to necromass formation, and a necromass-degrading consortium in which bacteria play a major role.</p>\\n </section>\\n </div>\",\"PeriodicalId\":16802,\"journal\":{\"name\":\"Journal of Plant Nutrition and Soil Science\",\"volume\":\"187 1\",\"pages\":\"89-103\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2023-09-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.202300142\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Plant Nutrition and Soil Science\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/jpln.202300142\",\"RegionNum\":3,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"AGRONOMY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Plant Nutrition and Soil Science","FirstCategoryId":"97","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jpln.202300142","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}
Organic matter type and soil texture shape prokaryotic communities during early-stage soil structure formation
Background
Organic matter (OM) serves as substrate for heterotrophic microbial growth. Soil structure supports microbial life by providing various niches for colonization. Microorganisms in turn contribute to soil structure formation.
Aims
We aim to understand how OM of different origin and soil texture affect prokaryotic community structure and the implications on early-stage soil structure formation.
Methods
An artificial soil incubation experiment was conducted with different types of OM, including bacterial necromass and particulate organic matter (POM) of larger or smaller size (sPOM). The mineral composition was modified to obtain a clay loam, loam, and sandy loam texture. The abundance and composition of a natural microbial inoculum were determined after 30 days of incubation by real-time PCR and 16S rRNA gene sequencing, respectively.
Results
The different OM types had a stronger effect on the prokaryotic community structure and abundance than texture. The necromass treatment supported the most distinct prokaryotic community with the highest abundance and lowest diversity, as well as the most intense formation of water-stable microaggregates in comparison to POM and sPOM treatments. Abundant bacterial taxa in all treatments are known to include extracellular polymeric substance producers, indicating that functional redundancy warrants aggregation by gluing agents. Texture-related effects were most consistent in the POM treatment, where larger prokaryotic populations were observed in the coarser-textured soils with fewer but larger soil pores and lower soil water content.
Conclusions
Differences in prokaryotic community structure and abundance due to OM source indicate that aggregation is dependent on different ecological strategists, a POM-degrading population that promotes aggregation and contributes to necromass formation, and a necromass-degrading consortium in which bacteria play a major role.
期刊介绍:
Established in 1922, the Journal of Plant Nutrition and Soil Science (JPNSS) is an international peer-reviewed journal devoted to cover the entire spectrum of plant nutrition and soil science from different scale units, e.g. agroecosystem to natural systems. With its wide scope and focus on soil-plant interactions, JPNSS is one of the leading journals on this topic. Articles in JPNSS include reviews, high-standard original papers, and short communications and represent challenging research of international significance. The Journal of Plant Nutrition and Soil Science is one of the world’s oldest journals. You can trust in a peer-reviewed journal that has been established in the plant and soil science community for almost 100 years.
Journal of Plant Nutrition and Soil Science (ISSN 1436-8730) is published in six volumes per year, by the German Societies of Plant Nutrition (DGP) and Soil Science (DBG). Furthermore, the Journal of Plant Nutrition and Soil Science (JPNSS) is a Cooperating Journal of the International Union of Soil Science (IUSS). The journal is produced by Wiley-VCH.
Topical Divisions of the Journal of Plant Nutrition and Soil Science that are receiving increasing attention are:
JPNSS – Topical Divisions
Special timely focus in interdisciplinarity:
- sustainability & critical zone science.
Soil-Plant Interactions:
- rhizosphere science & soil ecology
- pollutant cycling & plant-soil protection
- land use & climate change.
Soil Science:
- soil chemistry & soil physics
- soil biology & biogeochemistry
- soil genesis & mineralogy.
Plant Nutrition:
- plant nutritional physiology
- nutrient dynamics & soil fertility
- ecophysiological aspects of plant nutrition.