Development and nitrate reductase activity of sugarcane inoculated with five diazotrophic strains.
Arch Microbiol
; 199(6): 863-873, 2017 Aug.
Article
em En
| MEDLINE
| ID: mdl-28321482
ABSTRACT
Diazotrophs are able to stimulate plant growth. This study aimed at evaluating the effect of inoculation of five diazotrophic strains on growth promotion and nitrate reductase (NR, EC 1.7.1.1) activity in sugarcane. An experiment was carried out from three stages of cultivation sprouting, tubes, and in hydroponics. On the first two stages, seven treatments were adopted uninoculated control; mixed inoculation with five strains; and individual inoculation with Gluconacetobacter diazotrophicus (Gd), Herbaspirillum rubrisubalbicans (Hr), Herbaspirillum seropedicae (Hs), Nitrospirillum amazonense (Na), and Paraburkholderia tropica (Pt). The four treatments showing the best performance were transferred to the hydroponic system for analysis of NR activity. Hs, Pt, and the mixture of all strains led to the highest seedling biomass in tubes, followed by Hr. In hydroponics, the mixture and the strain Hr had the highest growth-promoting effect. NR activity was influenced by inoculation only under low N supply conditions, with positive effect of Hr, Pt, and the mixture.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas de Plantas
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Rhodospirillaceae
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Saccharum
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Burkholderiaceae
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Gluconacetobacter
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Herbaspirillum
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Nitrato Redutase
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Inoculantes Agrícolas
Idioma:
En
Revista:
Arch Microbiol
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Brasil