Woody Mimosa species are nodulated by Burkholderia in ombrophylous forest soils and their symbioses are enhanced by arbuscular mycorrhizal fungi (AMF)

Autor(es)

Lammel, Daniel R. ^{[1, 2]} ; Cruz, Leonardo M. ^[1] ; Mescolotti, Denise ^[2] ; Stuermer, Sidney Luiz ^[3] ; Cardoso, Elke J. B. N. ^[2]

Afiliação do(s) autor(es)

^[1] Fed Univ Parana UFPR, Dept Biochem & Mol Biol, Curitiba, Parana - Brazil

^[2] Univ Sao Paulo, ESALQ, Soil Microbiol Lab, Dept Soil Sci, BR-13418900 Piracicaba - Brazil

^[3] Univ Reg Blumenau FURB, Dept Ciencias Nat, Blumenau - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PLANT AND SOIL; v. 393, n. 1-2, p. 123-135, AUG 2015.
• Citações Web of Science: 6

Resumo

Mimosa is one of the largest genera in the Fabaceae, and includes several trees. They form symbioses with rhizobia and arbuscular mycorrizhal fungi (AMF), which improve nutrition and growth of host plants. Our objective was to analyze the tripartite symbiosis in two woody Mimosa species, and the natural occurrence of their symbiotic microorganisms in soils. Mimosa scabrella and M. bimucronata were grown in trap cultures using soils from Araucaria forests under three management systems: native, planted, and regenerating forest. Bacteria and AMF spores were isolated, identified and their symbiotic efficiency tested. The Mimosa species trapped beta-rhizobia (Burkholderia), putative endophytic bacteria (Pseudomonas, Herbaspirillum, and Xanthomonas), and AMF (Acaulospora, Ambispora, Gigaspora, Glomus, Paraglomus, Scutellospora, and Racocetra). The soils of the different forest managements led to distinct nodule bacterial diversity and AMF sporulation, but a predominance of Burkholderia and Acaulospora spp. was still observed in all areas. Some isolates showed potential to be used as inoculants, and higher nodulation in the presence of AMF was observed. Since different plant growth rates using different soils and microbial inocula were found, we suggest that the dual inoculation with selected beta-rhizobia and AMF is desirable in reforestation projects involving Mimosa spp. (AU)

• Processo FAPESP: 05/03632-1 - Diversidade de rizobios em sub-bosque de araucaria no estado de sao paulo.
• Beneficiário: Daniel Renato Lammel
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 01/05146-6 - Biodiversidade vegetal e de organismos edáficos em ecossistemas de Araucaria angustifolia naturais e impactados no estado de São Paulo
• Beneficiário: Elke Jurandy Bran Nogueira Cardoso
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático