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Title: Diazotrophic bacteria in star flowers
Other Titles: Bactérias diazotróficas em sempre-viva
Keywords: Biological nitrogen fixation
Diazotrophic bacteria
Low fertility soils
Fixação biológica de nitrogênio
Bactéria diazotrófica
Solos de baixa fertilidade
Issue Date: Mar-2012
Publisher: Universidade Federal de Uberlândia
Citation: MARRA, L. M. et al. Diazotrophic bacteria in star flowers. Bioscience Journal, Uberlândia, v. 28, n. 1, p. 17-24, Mar. 2012.
Abstract: This study evaluated the occurrence and density of associative diazotrophic bacteria in the rhizosphere, collar, roots and leaves of Syngonanthus elegans (Bong) Ruhland (Goldenfoot) and Syngonanthus aciphyllus (Mini-skirt). These species are able to grow in poor soils. Five samples, with 25 plants both of S. elegans and S. aciphyllus, each were collected in Soberbo stream, Diamantina-MG, Brazil. The occurrence and the density of diazotrophic bacteria were evaluated by the most probable number (MPN) method in semi-selective N-free media NFb, LGI, JNFb, and JMV. In general, for both species, a high density of diazotrophic bacteria was observed in all of the microenvironments evaluated. The density was greater in S. elegans than in S. aciphyllus. The associative occurrence of diazotrophic bacteria in S. elegans and S. aciphyllus can contribute to plant adaptation to low fertility soils.
Appears in Collections:DCS - Artigos publicados em periódicos

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