Exploring Rice Root Microbiome; The Variation, Specialization and Interaction of Bacteria and Fungi In Six Tropic Savanna Regions in Ghana

Makoto Kanasugi, Elsie Sarkodee-Addo, Richard Ansong Omari, Khondoker Mohammad Golam Dastogeer, Yoshiharu Fujii, Samuel Oppong Abebrese, Ralph Bam, Stella Asuming-Brempong and Shin Okazaki
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Makoto Kanasugi: Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Nakacho 2-24-16, Koganei, Tokyo 184-8588, Japan
Elsie Sarkodee-Addo: United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo 183-8509, Japan
Richard Ansong Omari: Institute of Agriculture and Horticulture, Faculty of Life Science, Humboldt-University of Berlin, Albrecht-Thaer-Weg 5, 14195 Berlin, Germany
Khondoker Mohammad Golam Dastogeer: Graduate School of Plant Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
Yoshiharu Fujii: United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo 183-8509, Japan
Samuel Oppong Abebrese: CSIR-Savanna Agricultural Research Institute, P.O. Box 52, Tamale, Ghana
Ralph Bam: CSIR-Crops Research Institute, P.O. Box 3785, Kumasi, Ghana
Stella Asuming-Brempong: Department of Soil Science, University of Ghana, P.O. Box LG 25, Legon, Ghana
Shin Okazaki: United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo 183-8509, Japan

Sustainability, 2020, vol. 12, issue 14, 1-19

Abstract: We investigated the root microbiomes of rice sampled from six major rice-producing regions in Ghana using Illumina MiSeq high-throughput amplicon sequencing analysis. The result showed that both bacterial and fungal community compositions were significantly varied across the regions. Bacterial communities were shaped predominantly by biotic factors, including root fungal diversity and abundance. In contrast, fungal communities were influenced by abiotic factors such as soil nitrate, total carbon and soil pH. A negative correlation between the diversity and abundance of root fungi with soil nitrate (NO 3 - ) level was observed. It suggested that there were direct and indirect effects of NO 3 - on the root-associated bacterial and fungal community composition. The gradient of soil nitrate from North to South parts of Ghana may influence the composition of rice root microbiome. Bacterial community composition was shaped by fungal diversity and abundance; whereas fungal community composition was shaped by bacterial abundance. It suggested the mutualistic interaction of bacteria and fungi at the community level in the rice root microbiome. Specific bacterial and fungal taxa were detected abundantly in the ‘Northern’ regions of Ghana, which were very low or absent from the samples of other regions. The analysis of indicator species suggested that an ‘ecological specialization’ may have occurred which enabled specific microbial taxa to adapt to the local environment, such as the low-nitrate condition in the Northern regions.

Keywords: Ghana; rice; root microbiome; community analysis; regional variation; nitrogen gradient; ecological specialization; bacterial-fungal interaction (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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