Genetic diversity and plant-growth related features of Burkholderia spp. from sugarcane roots

Autor(es)

Luvizotto, Danice M. ^{[1, 2]} ; Marcon, Joelma ^[3] ; Andreote, Fernando D. ^[4] ; Dini-Andreote, Francisco ^[1] ; Neves, Aline A. C. ^[5] ; Araujo, Welington L. ^[5] ; Pizzirani-Kleiner, Aline A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Dept Genet, Piracicaba, SP - Brazil

^[2] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Grad Program Agr Microbiol, Piracicaba, SP - Brazil

^[3] Biotechnol Ctr Amazonia, Manaus, Amazonas - Brazil

^[4] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Dept Soil Sci, Piracicaba, SP - Brazil

^[5] Univ Mogi das Cruzes, NIB, Lab Mol Biol & Microbial Ecol, BR-08780911 Mogi Das Cruzes, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY; v. 26, n. 10, p. 1829-1836, OCT 2010.
• Citações Web of Science: 33

Resumo

Brazil is the largest sugarcane producer in the world, mainly due to the development of different management strategies. Recently, microbial-plant related studies revealed that bacterial isolates belonging to the genus Burkholderia are mainly associated with this plant and are responsible for a range of physiological activity. In this study, we properly evaluate the physiological activity and genetic diversity of endophytic and rhizospheric Burkholderia spp. isolates from sugarcane roots grown in the field in Brazil. In total, 39 isolates previously identified as Burkholderia spp. were firstly evaluated for the capability to fix nitrogen, produce siderophores, solubilise inorganic phosphates, produce indole-acetic acid and inhibit sugarcane phytopathogens in vitro. These results revealed that all isolates present at least two positive evaluated activities. Furthermore, a phylogenetic study was carried out using 16S rRNA and gyrB genes revealing that most of the isolates were affiliated with the Burkholderia cepacia complex. Hence, a clear separation given by endophytic or rhizospheric niche occupation was not observed. These results presented an overview about Burkholderia spp. isolates from sugarcane roots and supply information about the physiological activity and genetic diversity of this genus, given direction for further studies related to achieve more sustainable cultivation of sugarcane. (AU)

• Processo FAPESP: 08/52407-9 - Identificacao de genes de burkholderia sp. associados ao controle biologico de pectobacterium carotovora.
• Beneficiário: Welington Luiz de Araújo
• Modalidade de apoio: Auxílio à Pesquisa - Regular