Breeding Practice Improves the Mycorrhizal Responsiveness of Cotton (Gossypium spp. L.)

Letian Wang; Xihe Wang; Baidengsha Maimaitiaili; Arjun Kafle; Khuram Shehzad Khan; Gu Feng

doi:10.3389/fpls.2021.780454

Frontiers in Plant Science (Dec 2021)

Breeding Practice Improves the Mycorrhizal Responsiveness of Cotton (Gossypium spp. L.)

Letian Wang,
Xihe Wang,
Baidengsha Maimaitiaili,
Arjun Kafle,
Khuram Shehzad Khan,
Gu Feng

Affiliations

Letian Wang: College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, China
Xihe Wang: Institute of Soil and Fertilizer and Agricultural Sparing Water, Xinjiang Academy of Agricultural Science, Urumqi, China
Baidengsha Maimaitiaili: Institute of Nuclear Technology and Biotechnology, Xinjiang Academy of Agricultural Sciences, Urumqi, China
Arjun Kafle: Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, United States
Khuram Shehzad Khan: College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, China
Gu Feng: College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, China

DOI: https://doi.org/10.3389/fpls.2021.780454
Journal volume & issue: Vol. 12

Abstract

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Maximizing the function of indigenous arbuscular mycorrhizal (AM) fungi by choosing specific crop genotypes offers one of the few untapped opportunities to improve the sustainability of agriculture. In this study, the differences in mycorrhizal responsiveness (MR) in plant growth and shoot phosphorus (P) content among cotton (Gossypium spp. L.) genotypes from different release dates were compared and then the relationships between MR and P uptake-related traits were determined. The experimental design in a greenhouse included 24 genotypes released from 1950 to present in Xinjiang Province, inoculation with or without AM fungi, and P levels (15 and 150 mg P kg–1 added as KH2PO4). Results showed that the modern cotton genotypes exhibited a higher degree of mycorrhizal colonization, the hyphal length density (HLD), and mycorrhizae-induced changes in shoot growth than the old genotypes when inoculated with indigenous AM fungi at both the P levels. Moreover, MR was highly correlated with the HLD at low P levels and the HLD may provide useful insights for future cotton breeding aimed at delivering crop genotypes that can benefit more from AM fungi.

Published in Frontiers in Plant Science

ISSN: 1664-462X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Agriculture: Plant culture
Website: https://www.frontiersin.org/journals/plant-science

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