Data/hora: 07/06/2024 16:18:58

Biblioteca(s): | Embrapa Cerrados.
Data corrente: | 22/11/2021
Data da última atualização: | 25/11/2021
Autoria: | PAULITSCH, F.; REIS JUNIOR, F. B. dos; HUNGRIA, M.
Afiliação: | FABIANE PAULITSCH; FABIO BUENO DOS REIS JUNIOR, CPAC; MARIANGELA HUNGRIA DA CUNHA, CNPSO.
Título: | Twenty years of paradigm breaking studies of taxonomy and symbiotic nitrogen fxation by beta rhizobia, and indication of Brazil as a hotspot of Paraburkholderia diversity.
Ano de publicação: | 2021
Fonte/Imprenta: | Archives of Microbiology, v. 203, p. 4785-48-03, 2021.
Idioma: | Inglês
Conteúdo: | Twenty years ago, the first members of the genus Burkholderia capable of nodulating and fixing N2 during symbiosis with leguminous plants were reported. The discovery that &#946;-proteobacteria could nodulate legumes represented a breakthrough event because, for over 100 years, it was thought that all rhizobia belonged exclusively to the &#945;-Proteobacteria class. Over the past 20 years, efforts toward robust characterization of these bacteria with large-scale phylogenomic and taxonomic studies have led to the separation of clinically important and phytopathogenic members of Burkholderia from environmental ones, and the symbiotic nodulating species are now included in the genera Paraburkholderia and Trinickia. Paraburkholderia encompasses the vast majority of &#946;-rhizobia and has been mostly found in South America and South Africa, presenting greater symbiotic affinity with native members of the families Mimosoideae and Papilionoideae, respectively. Being the main center of Mimosa spp. diversity, Brazil is also known as the center of symbiotic Paraburkholderia diversity. Of the 21 symbiotic Paraburkholderia species described to date, 11 have been isolated in Brazil, and others first isolated in different countries have also been found in this country. Additionally, besides the symbiotic N2- fixation capacity of some of its members, Paraburkholderia is considered rich in other beneficial interactions with plants and can promote growth through several direct and indirect mechanisms. Therefore, these bacteria can be considered biological resources employed as environmentally friendly alternatives that could reduce the agricultural dependence on agrochemical inputs.
Palavras-Chave: | Betarhizobia.
Thesagro: | Fixação de Nitrogênio; Nodulação.
Thesaurus Nal: | Burkholderia.
Categoria do assunto: | --
Registro original: | Embrapa Cerrados (CPAC)
Exemplares: | CPAC - (37155-1) - UPC - AP - DD - DIGITAL -  - DIGITAL - DIS