The arbuscular mycorrhizal fungus Rhizophagus clarus improves physiological tolerance to drought stress in soybean plants.

Autor: Oliveira TC; Laboratory of Plant Tissue and Culture, Instituto Federal Goiano-Campus Rio Verde, P.O. Box 66, Rio Verde, GO, 75901-970, Brazil., Cabral JSR; Faculty of Agronomy, Universidade de Rio Verde, Fazenda Fontes do Saber-Campus Universitário, P.O Box 104, Rio Verde, GO, 75901-970, Brazil., Santana LR; Laboratory of Plant Tissue and Culture, Instituto Federal Goiano-Campus Rio Verde, P.O. Box 66, Rio Verde, GO, 75901-970, Brazil., Tavares GG; Laboratory of Plant Tissue and Culture, Instituto Federal Goiano-Campus Rio Verde, P.O. Box 66, Rio Verde, GO, 75901-970, Brazil., Santos LDS; Laboratory of Plant Tissue and Culture, Instituto Federal Goiano-Campus Rio Verde, P.O. Box 66, Rio Verde, GO, 75901-970, Brazil., Paim TP; Laboratory of Education in Agriculture Production, Instituto Federal Goiano-Campus Rio Verde, P.O. Box 66, Rio Verde, GO, 75901-970, Brazil., Müller C; Ecophysiology and Plant Productivity Laboratory, Instituto Federal Goiano-Campus Rio Verde, P.O. Box 66, Rio Verde, GO, 75901-970, Brazil., Silva FG; Laboratory of Plant Tissue and Culture, Instituto Federal Goiano-Campus Rio Verde, P.O. Box 66, Rio Verde, GO, 75901-970, Brazil., Costa AC; Ecophysiology and Plant Productivity Laboratory, Instituto Federal Goiano-Campus Rio Verde, P.O. Box 66, Rio Verde, GO, 75901-970, Brazil., Souchie EL; Agricultural Microbiology Laboratory, Instituto Federal Goiano-Campus Rio Verde, P.O. Box 66, Rio Verde, GO, 75901-970, Brazil., Mendes GC; Laboratory of Biotechnology, Instituto Federal de Santa Catarina-Campus Lages, Lages, SC, 88506-400, Brazil. giselle.mendes@ifsc.edu.br.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2022 May 31; Vol. 12 (1), pp. 9044. Date of Electronic Publication: 2022 May 31.
DOI: 10.1038/s41598-022-13059-7
Abstrakt: Soybean (Glycine max L.) is an economically important crop, and is cultivated worldwide, although increasingly long periods of drought have reduced the productivity of this plant. Research has shown that inoculation with arbuscular mycorrhizal fungi (AMF) provides a potential alternative strategy for the mitigation of drought stress. In the present study, we measured the physiological and morphological performance of two soybean cultivars in symbiosis with Rhizophagus clarus that were subjected to drought stress (DS). The soybean cultivars Anta82 and Desafio were grown in pots inoculated with R. clarus. Drought stress was imposed at the V3 development stage and maintained for 7 days. A control group, with well-irrigated plants and no AMF, was established simultaneously in the greenhouse. The mycorrhizal colonization rate, and the physiological, morphological, and nutritional traits of the plants were recorded at days 3 and 7 after drought stress conditions were implemented. The Anta82 cultivar presented the highest percentage of AMF colonization, and N and K in the leaves, whereas the DS group of the Desafio cultivar had the highest water potential and water use efficiency, and the DS + AMF group had thermal dissipation that permitted higher values of F v /F m , A, and plant height. The results of the principal components analysis demonstrated that both cultivars inoculated with AMF performed similarly under DS to the well-watered plants. These findings indicate that AMF permitted the plant to reduce the impairment of growth and physiological traits caused by drought conditions.
(© 2022. The Author(s).)
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje