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Native Arbuscular Mycorrhizal Fungi Exhibit Biotechnological Potential in Improvement of Soil Biochemical Quality and in Increasing Yield in Sugarcane Cultivars

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Abstract

The optimization and sustainability of farming systems are essential. The use of biotechnologies, such as the increase in the density of arbuscular mycorrhizal fungi (AMF) propagules, can be an important technique to maximize the effects of fertilizers and benefit the plant and, consequently, increase the biomass and microbial activity in the soil. This study evaluated the effect of inoculation of native AMF on soil biochemical quality and the yield of different sugarcane (Saccharum species hybrids) cultivars. The experiment was conducted in the field following a randomized block experimental design in 6 × 2 factorial arrangements [sugarcane cultivars (CTC 1, CTC 7, CTC 9, CTC 16, SP89-1115, and RB925345) and inoculation of AMF], in two ratoon crops. The native AMF were inoculated through application of inoculum soil in the planting furrow at the time of sowing  the crop. At the end of each ratoon crop, the following traits were evaluated: microbial biomass carbon and nitrogen, soil respiration, enzyme activities (β-glucosidase, urease, phosphatase, and fluorescein diacetate hydrolysis), mycorrhizal colonization and sugarcane yield. The increase in biomass and in microbial activities in relation to inoculation with native AMF led to increases in sugarcane yield, but the more prominent were CTC1, CTC7, and CTC9. The increase in the density of the native AMF by means of inoculation with inoculum soil favored soil biochemical quality and increased the yield of the sugarcane cultivars, regardless of the known yield potential of each cultivar, with reduction in production costs.

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Acknowledgements

The authors are grateful for the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes), the Conselho Nacional de Desenvolvimento; Científico e Tecnologia (CNPq), and the Fundação de Amparo à Pesquisa de Minas Gerais (Fapemig) for financial support and scholarships granted to the authors. And anonymous reviewers have provided valuable suggestions and comments and thereby greatly improved this manuscript.

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Contributions

F.R.S., A.O.S., and M.A.C.C. contributed to conceptualization; F.R.S., A.O.S., L.R.S., and M.A.C.C. contributed to methodology; F.R.S., A.O.S., and T.L.R. contributed to investigation, F.R.S., A.O.S., F.M.S.M., and M.A.C.C. contributed to writing—original draft; M.A.C.C. acquired funding; F.M.S.M, and M.A.C.C. contributed to supervision.

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Correspondence to Marco Aurélio Carbone Carneiro.

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The authors declare that they have no conflict of interest.

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Sales, F.R., Silva, A.O., Sales, L.R. et al. Native Arbuscular Mycorrhizal Fungi Exhibit Biotechnological Potential in Improvement of Soil Biochemical Quality and in Increasing Yield in Sugarcane Cultivars. Sugar Tech 23, 1235–1246 (2021). https://doi.org/10.1007/s12355-021-01016-z

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  • DOI: https://doi.org/10.1007/s12355-021-01016-z

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