{"title":"蚯蚓和菌根真菌的生物强化作用改善了玉米根瘤层-根瘤层-根瘤层细菌网络对玉米耐盐性的影响","authors":"Binglei Wang, Chong Wang, Rue Xue","doi":"10.1007/s11104-024-06968-1","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Salt stress is one of the most important abiotic stresses that restrict crop growth. Plant root-related microorganisms are important in moderating abiotic stress in plants. In this study, changes in microbial community composition in the different ecological niches of maize roots were studied to evaluate whether earthworms and mycorrhizal fungi could improve the salt tolerance of maize.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>This experiment was a 2 × 2 factorial design representing all the combinations of arbuscular mycorrhizal (AM) fungi (2.5 g/kg) with earthworms (10/pot) in saline soil. After culture, rhizosphere, rhizoplane and endosphere bacteria of maize were collected, and community assembly was analyzed and co-occurrence network was constructed.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The regulating effect of earthworm-arbuscular mycorrhiza fungi (AMF) on bacterial community gradually decreased along the rhizosphere-rhizoplane-endosphere continuum. Earthworms and AMF are able to regulate key species in bacterial co-occurrence networks, thereby influencing the composition and function of the microbiome. Members of Rhizobiaceae and Gemmatimonadaceae, as key species, potentially regulate rhizosphere bacterial communities with earthworms and AMF. On the rhizoplane, AMF may specifically enriched bacterial communities with functions related to plant P absorption and maintenance of plant K-Na ratio, thereby maintaining plant nutrient homeostasis.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Soil nitrate nitrogen content, plant K-Na ratio and root abscisic acid content were correlated with a large number of microbial network modules, and had potential causal relationship with rhizosphere, rhizoplane and endosphere bacterial community changes, which played an important role in the biomass accumulation of maize seedlings in saline soil. These results will provide a theoretical basis for the study of soil root-microbe interactions.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"54 1","pages":""},"PeriodicalIF":3.9000,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Improvement of rhizosphere—rhizoplane—endosphere bacterial network on salt tolerance of maize after biological enhancement of earthworm and mycorrhizal fungi\",\"authors\":\"Binglei Wang, Chong Wang, Rue Xue\",\"doi\":\"10.1007/s11104-024-06968-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Background and aims</h3><p>Salt stress is one of the most important abiotic stresses that restrict crop growth. Plant root-related microorganisms are important in moderating abiotic stress in plants. In this study, changes in microbial community composition in the different ecological niches of maize roots were studied to evaluate whether earthworms and mycorrhizal fungi could improve the salt tolerance of maize.</p><h3 data-test=\\\"abstract-sub-heading\\\">Methods</h3><p>This experiment was a 2 × 2 factorial design representing all the combinations of arbuscular mycorrhizal (AM) fungi (2.5 g/kg) with earthworms (10/pot) in saline soil. After culture, rhizosphere, rhizoplane and endosphere bacteria of maize were collected, and community assembly was analyzed and co-occurrence network was constructed.</p><h3 data-test=\\\"abstract-sub-heading\\\">Results</h3><p>The regulating effect of earthworm-arbuscular mycorrhiza fungi (AMF) on bacterial community gradually decreased along the rhizosphere-rhizoplane-endosphere continuum. Earthworms and AMF are able to regulate key species in bacterial co-occurrence networks, thereby influencing the composition and function of the microbiome. Members of Rhizobiaceae and Gemmatimonadaceae, as key species, potentially regulate rhizosphere bacterial communities with earthworms and AMF. On the rhizoplane, AMF may specifically enriched bacterial communities with functions related to plant P absorption and maintenance of plant K-Na ratio, thereby maintaining plant nutrient homeostasis.</p><h3 data-test=\\\"abstract-sub-heading\\\">Conclusion</h3><p>Soil nitrate nitrogen content, plant K-Na ratio and root abscisic acid content were correlated with a large number of microbial network modules, and had potential causal relationship with rhizosphere, rhizoplane and endosphere bacterial community changes, which played an important role in the biomass accumulation of maize seedlings in saline soil. These results will provide a theoretical basis for the study of soil root-microbe interactions.</p>\",\"PeriodicalId\":20223,\"journal\":{\"name\":\"Plant and Soil\",\"volume\":\"54 1\",\"pages\":\"\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2024-10-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plant and Soil\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.1007/s11104-024-06968-1\",\"RegionNum\":2,\"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":"Plant and Soil","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1007/s11104-024-06968-1","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}
Improvement of rhizosphere—rhizoplane—endosphere bacterial network on salt tolerance of maize after biological enhancement of earthworm and mycorrhizal fungi
Background and aims
Salt stress is one of the most important abiotic stresses that restrict crop growth. Plant root-related microorganisms are important in moderating abiotic stress in plants. In this study, changes in microbial community composition in the different ecological niches of maize roots were studied to evaluate whether earthworms and mycorrhizal fungi could improve the salt tolerance of maize.
Methods
This experiment was a 2 × 2 factorial design representing all the combinations of arbuscular mycorrhizal (AM) fungi (2.5 g/kg) with earthworms (10/pot) in saline soil. After culture, rhizosphere, rhizoplane and endosphere bacteria of maize were collected, and community assembly was analyzed and co-occurrence network was constructed.
Results
The regulating effect of earthworm-arbuscular mycorrhiza fungi (AMF) on bacterial community gradually decreased along the rhizosphere-rhizoplane-endosphere continuum. Earthworms and AMF are able to regulate key species in bacterial co-occurrence networks, thereby influencing the composition and function of the microbiome. Members of Rhizobiaceae and Gemmatimonadaceae, as key species, potentially regulate rhizosphere bacterial communities with earthworms and AMF. On the rhizoplane, AMF may specifically enriched bacterial communities with functions related to plant P absorption and maintenance of plant K-Na ratio, thereby maintaining plant nutrient homeostasis.
Conclusion
Soil nitrate nitrogen content, plant K-Na ratio and root abscisic acid content were correlated with a large number of microbial network modules, and had potential causal relationship with rhizosphere, rhizoplane and endosphere bacterial community changes, which played an important role in the biomass accumulation of maize seedlings in saline soil. These results will provide a theoretical basis for the study of soil root-microbe interactions.
期刊介绍：
Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.
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