Brazilian Journal of Microbiology | |
HERBASPIRILLUM-LIKE BACTERIA IN BANANA PLANTS | |
Olmar B. Weber2 Leonardo M. Cruz1 José I. Baldani1 Johanna Döbereiner1 | |
[1] ,Embrapa Centro Nacional de Pesquisa de Agroindústria Tropical Fortaleza CE ,Brasil | |
关键词: Herbaspirillum; Herbaspirillum-like; Musa spp.; microbial ecology; Herbaspirillum; bactérias tipo Herbaspirillum; Musa spp.; ecologia microbiana; | |
DOI : 10.1590/S1517-83822001000300007 | |
来源: SciELO | |
【 摘 要 】
Diazotrophic bacteria isolated from banana plants were characterized by morphological and physiological aspects. Three different groups of these plant-bacteria could be established. Two of them showed similarity to species of the Herbaspirillum genus. The third one was different because used only a few carbon substrates and produced water diffusible compounds that fluoresced under UV light. All three bacterial groups were thin rods with mono or bipolar flagella, presented negative reaction in Gram stain, showed catalase activity, were able to reduce nitrate and grew better in semi-solid JNFb medium at 31ºC. The nitrogenase activity was detected in semi-solid N-free JNFb medium and expressed higher values when pH ranged from 6.5 to 7.0 (groups I and II) and 6.0 to 6.5 (group III). The diazotrophs isolated from banana plants were distinct from species of Herbaspirillum previously identified in gramineous plants.
【 授权许可】
CC BY-NC
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