Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress
An extensive body of evidence from the last decade has indicated that melatonin enhances plant resistance to a range of biotic and abiotic stressors. This has led to an interest in the application of melatonin in agriculture to reduce negative physiological effects from environmental stresses that a...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-12-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fmicb.2019.02616/full |
| _version_ | 1828378232628445184 |
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| author | Andrew P. Madigan Andrew P. Madigan Eleonora Egidi Frank Bedon Ashley E. Franks Ashley E. Franks Kim M. Plummer |
| author_facet | Andrew P. Madigan Andrew P. Madigan Eleonora Egidi Frank Bedon Ashley E. Franks Ashley E. Franks Kim M. Plummer |
| author_sort | Andrew P. Madigan |
| collection | DOAJ |
| description | An extensive body of evidence from the last decade has indicated that melatonin enhances plant resistance to a range of biotic and abiotic stressors. This has led to an interest in the application of melatonin in agriculture to reduce negative physiological effects from environmental stresses that affect yield and crop quality. However, there are no reports regarding the effects of melatonin on soil microbial communities under abiotic stress, despite the importance of microbes for plant root health and function. Three agricultural soils associated with different land usage histories (pasture, canola or wheat) were placed under abiotic stress by cadmium (100 or 280 mg kg−1 soil) or salt (4 or 7 g kg−1 soil) and treated with melatonin (0.2 and 4 mg kg−1 soil). Automated Ribosomal Intergenic Spacer Analysis (ARISA) was used to generate Operational Taxonomic Units (OTU) for microbial community analysis in each soil. Significant differences in richness (α diversity) and community structures (β diversity) were observed between bacterial and fungal assemblages across all three soils, demonstrating the effect of melatonin on soil microbial communities under abiotic stress. The analysis also indicated that the microbial response to melatonin is governed by the type of soil and history. The effects of melatonin on soil microbes need to be regarded in potential future agricultural applications. |
| first_indexed | 2024-04-14T08:23:51Z |
| format | Article |
| id | doaj.art-13816c4083e642b18c914930b9b2e42f |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-04-14T08:23:51Z |
| publishDate | 2019-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-13816c4083e642b18c914930b9b2e42f2022-12-22T02:04:08ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2019-12-011010.3389/fmicb.2019.02616474922Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic StressAndrew P. Madigan0Andrew P. Madigan1Eleonora Egidi2Frank Bedon3Ashley E. Franks4Ashley E. Franks5Kim M. Plummer6Department of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Melbourne, VIC, AustraliaDepartment of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC, AustraliaHawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, AustraliaDepartment of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Melbourne, VIC, AustraliaDepartment of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC, AustraliaCentre for Future Landscapes, School of Life Sciences, La Trobe University, Melbourne, VIC, AustraliaDepartment of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Melbourne, VIC, AustraliaAn extensive body of evidence from the last decade has indicated that melatonin enhances plant resistance to a range of biotic and abiotic stressors. This has led to an interest in the application of melatonin in agriculture to reduce negative physiological effects from environmental stresses that affect yield and crop quality. However, there are no reports regarding the effects of melatonin on soil microbial communities under abiotic stress, despite the importance of microbes for plant root health and function. Three agricultural soils associated with different land usage histories (pasture, canola or wheat) were placed under abiotic stress by cadmium (100 or 280 mg kg−1 soil) or salt (4 or 7 g kg−1 soil) and treated with melatonin (0.2 and 4 mg kg−1 soil). Automated Ribosomal Intergenic Spacer Analysis (ARISA) was used to generate Operational Taxonomic Units (OTU) for microbial community analysis in each soil. Significant differences in richness (α diversity) and community structures (β diversity) were observed between bacterial and fungal assemblages across all three soils, demonstrating the effect of melatonin on soil microbial communities under abiotic stress. The analysis also indicated that the microbial response to melatonin is governed by the type of soil and history. The effects of melatonin on soil microbes need to be regarded in potential future agricultural applications.https://www.frontiersin.org/article/10.3389/fmicb.2019.02616/fullmelatoninmicrobial ecologyautomated ribosomal intergenic spacer analysisabiotic stresssaltcadmium |
| spellingShingle | Andrew P. Madigan Andrew P. Madigan Eleonora Egidi Frank Bedon Ashley E. Franks Ashley E. Franks Kim M. Plummer Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress Frontiers in Microbiology melatonin microbial ecology automated ribosomal intergenic spacer analysis abiotic stress salt cadmium |
| title | Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress |
| title_full | Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress |
| title_fullStr | Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress |
| title_full_unstemmed | Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress |
| title_short | Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress |
| title_sort | bacterial and fungal communities are differentially modified by melatonin in agricultural soils under abiotic stress |
| topic | melatonin microbial ecology automated ribosomal intergenic spacer analysis abiotic stress salt cadmium |
| url | https://www.frontiersin.org/article/10.3389/fmicb.2019.02616/full |
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