Cargando…
Organic Fertilization Assembles Fungal Communities of Wheat Rhizosphere Soil and Suppresses the Population Growth of Heterodera avenae in the Field
Heterodera avenae (cereal cyst nematode, CCN) infects wheat and other cereal crops and causes severe losses in their yield. Research has shown that CCN infestations can be mitigated by organic fertilization in wheat fields, but the mechanisms underlying this phenomenon are still largely unknown. In...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7429443/ https://www.ncbi.nlm.nih.gov/pubmed/32849758 http://dx.doi.org/10.3389/fpls.2020.01225 |
_version_ | 1783571264663715840 |
---|---|
author | Qiu, Wei Su, Huiqing Yan, Lingyun Ji, Kaiyan Liu, Qian Jian, Heng |
author_facet | Qiu, Wei Su, Huiqing Yan, Lingyun Ji, Kaiyan Liu, Qian Jian, Heng |
author_sort | Qiu, Wei |
collection | PubMed |
description | Heterodera avenae (cereal cyst nematode, CCN) infects wheat and other cereal crops and causes severe losses in their yield. Research has shown that CCN infestations can be mitigated by organic fertilization in wheat fields, but the mechanisms underlying this phenomenon are still largely unknown. In this study, the relationships among CCN, soil properties, and soil fungal communities with organic fertilizer (OF) or chemical fertilizer (CF) and without fertilizer (CK), were investigated for two years in a wheat field in Henan province, China. Our results showed that the concentrations of soil total N, total P, available P, available K, and organic matter were all promoted by the OF treatment at the jointing stage of wheat, coinciding with the peak in egg hatching and penetration of wheat root by CCNs. Soil total N correlated positively (R(2) = 0.759, p < 0.05) with wheat yields but negatively (R(2) = 0.663, p < 0.01) with Pf/Pi (index of cyst nematode reproduction), implying the regulated soil property contributes to suppressing CCN in the OF treatment. Furthermore, fungal community α-diversity (Shannon and Simpson) and β-diversity (PCoA) of rhizosphere soil was improved under the organic fertilizer treatment. The fungal genera negatively associated with the Pf/Pi of CCN were highly enriched, which included Mortierella and Chaetomium, two taxa already reported as being nematophagous fungi in many other studies. These two genera were heavily surrounded by much more related fungal genera in the constructs co-occurrence network. These results suggested that the OF treatment shifted soil fungal community functioning towards the suppression of CCN. Taken together, the suppressed cyst nematode reproduction with the assembly of fungal communities in the rhizosphere led to greater wheat yields under organic fertilization. These findings provide an in-depth understanding of the benefits provided by organic fertilization for developing sustainable agriculture. |
format | Online Article Text |
id | pubmed-7429443 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-74294432020-08-25 Organic Fertilization Assembles Fungal Communities of Wheat Rhizosphere Soil and Suppresses the Population Growth of Heterodera avenae in the Field Qiu, Wei Su, Huiqing Yan, Lingyun Ji, Kaiyan Liu, Qian Jian, Heng Front Plant Sci Plant Science Heterodera avenae (cereal cyst nematode, CCN) infects wheat and other cereal crops and causes severe losses in their yield. Research has shown that CCN infestations can be mitigated by organic fertilization in wheat fields, but the mechanisms underlying this phenomenon are still largely unknown. In this study, the relationships among CCN, soil properties, and soil fungal communities with organic fertilizer (OF) or chemical fertilizer (CF) and without fertilizer (CK), were investigated for two years in a wheat field in Henan province, China. Our results showed that the concentrations of soil total N, total P, available P, available K, and organic matter were all promoted by the OF treatment at the jointing stage of wheat, coinciding with the peak in egg hatching and penetration of wheat root by CCNs. Soil total N correlated positively (R(2) = 0.759, p < 0.05) with wheat yields but negatively (R(2) = 0.663, p < 0.01) with Pf/Pi (index of cyst nematode reproduction), implying the regulated soil property contributes to suppressing CCN in the OF treatment. Furthermore, fungal community α-diversity (Shannon and Simpson) and β-diversity (PCoA) of rhizosphere soil was improved under the organic fertilizer treatment. The fungal genera negatively associated with the Pf/Pi of CCN were highly enriched, which included Mortierella and Chaetomium, two taxa already reported as being nematophagous fungi in many other studies. These two genera were heavily surrounded by much more related fungal genera in the constructs co-occurrence network. These results suggested that the OF treatment shifted soil fungal community functioning towards the suppression of CCN. Taken together, the suppressed cyst nematode reproduction with the assembly of fungal communities in the rhizosphere led to greater wheat yields under organic fertilization. These findings provide an in-depth understanding of the benefits provided by organic fertilization for developing sustainable agriculture. Frontiers Media S.A. 2020-08-07 /pmc/articles/PMC7429443/ /pubmed/32849758 http://dx.doi.org/10.3389/fpls.2020.01225 Text en Copyright © 2020 Qiu, Su, Yan, Ji, Liu and Jian http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Plant Science Qiu, Wei Su, Huiqing Yan, Lingyun Ji, Kaiyan Liu, Qian Jian, Heng Organic Fertilization Assembles Fungal Communities of Wheat Rhizosphere Soil and Suppresses the Population Growth of Heterodera avenae in the Field |
title | Organic Fertilization Assembles Fungal Communities of Wheat Rhizosphere Soil and Suppresses the Population Growth of Heterodera avenae in the Field |
title_full | Organic Fertilization Assembles Fungal Communities of Wheat Rhizosphere Soil and Suppresses the Population Growth of Heterodera avenae in the Field |
title_fullStr | Organic Fertilization Assembles Fungal Communities of Wheat Rhizosphere Soil and Suppresses the Population Growth of Heterodera avenae in the Field |
title_full_unstemmed | Organic Fertilization Assembles Fungal Communities of Wheat Rhizosphere Soil and Suppresses the Population Growth of Heterodera avenae in the Field |
title_short | Organic Fertilization Assembles Fungal Communities of Wheat Rhizosphere Soil and Suppresses the Population Growth of Heterodera avenae in the Field |
title_sort | organic fertilization assembles fungal communities of wheat rhizosphere soil and suppresses the population growth of heterodera avenae in the field |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7429443/ https://www.ncbi.nlm.nih.gov/pubmed/32849758 http://dx.doi.org/10.3389/fpls.2020.01225 |
work_keys_str_mv | AT qiuwei organicfertilizationassemblesfungalcommunitiesofwheatrhizospheresoilandsuppressesthepopulationgrowthofheteroderaavenaeinthefield AT suhuiqing organicfertilizationassemblesfungalcommunitiesofwheatrhizospheresoilandsuppressesthepopulationgrowthofheteroderaavenaeinthefield AT yanlingyun organicfertilizationassemblesfungalcommunitiesofwheatrhizospheresoilandsuppressesthepopulationgrowthofheteroderaavenaeinthefield AT jikaiyan organicfertilizationassemblesfungalcommunitiesofwheatrhizospheresoilandsuppressesthepopulationgrowthofheteroderaavenaeinthefield AT liuqian organicfertilizationassemblesfungalcommunitiesofwheatrhizospheresoilandsuppressesthepopulationgrowthofheteroderaavenaeinthefield AT jianheng organicfertilizationassemblesfungalcommunitiesofwheatrhizospheresoilandsuppressesthepopulationgrowthofheteroderaavenaeinthefield |