Record ID No. |
6662 |
Author(s) |
He J. D., Wu Q. S. and Zou Y. N. , 2019 |
Affiliation |
College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei, 434025, China. |
Title |
Effects of Mycorrhiza and Drought Stress on the Diversity of Fungal Community in Soils and Roots of Trifoliate Orange. |
Source. Vol.(no):Page |
Biotechnology. 18(1): 32-41. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Genetics |
Host |
Poncirus trifoliata |
Organism |
Funneliformis mosseae. Sordariomycetes |
Country |
China |
Abstracts |
Citrus is highly dependent on soil arbuscular mycorrhizal fungi (AMF) for vigor growth. Either drought stress (DS) or AMF modifies soil fungal diversity, a bio-indicator towards the maintenance of soil ecosystem and soil fertility. The present work was to explore the effects of both AMF and drought stress on fungal communities in rhizosphere soils and roots of host plants. In this study, trifoliate orange seedlings in pots were inoculated with Funneliformis mosseae and subjected to well-watered and DS for 8 weeks. The internal transcribed spacer fragment sequencing was used to analyze fungal diversity in soils and roots. The results showed that a significantly higher operational taxonomic unit (OTU) number was found in roots than in soils. The AMF colonization increased root OTU number under both well-watered and DS and soil OTU number under DS. The AMF inoculation promoted the increase of Sordariomycetes in roots and the relative abundance of Chytridiomycota in rhizosphere soils and Ascomycota in roots. The stability of the fungal community in rhizosphere soils was better than in roots. The AMF and DS had a much less impact on the abundance and diversity of the fungal community in soils than in roots. Conclusion: It concluded that AMF modulated superior fungal diversity in roots, but not in soils, to enhance plant tolerance to drought. |