Growth Promoting Rhizobacteria
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. Plant growth-promoting rhizobacteria (PGPR): their potential as antagonists and biocontrol agents
Bacteria that colonize plant roots and promote plant growth are referred to as plant growth-promoting rhizobacteria (PGPR). PGPR are highly diverse and in this review we focus on rhizobacteria as biocontrol agents. Their effects can occur via local antagonism to soil-borne pathogens or by induction of systemic resistance against pathogens throughout the enti
Genet. Mol. Biol.. Publicado em: 2012
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14. Isolamento e caracterização de bactérias promotoras de crescimento vegetal de lavouras experimentais de arroz sob diferentes níveis de fertilização
Chemical fertilization is widely used for increased crop productivity, but its production and use lead to serious environmental damage. To reduce the use of fertilizers, one can make use of plant growth promoting rhizobacteria (PGPR), which are plant-associated bacteria that increase plant health, size and yield through various mechanisms. PGPR effectiveness
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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15. Effectiveness of plant growth promoting rhizobacteria in facilitating lead and nutrient uptake by little seed canary grass
We investigated the effectiveness of Nitroxin inoculation on lead (Pb) and nutrient uptakes by little seed canary grass. The factors tested included inoculation (or not) with Nitroxin and different soil concentrations of Pb (0, 200, 400 and 800mgPbkg-1 soil). Increasing soil concentrations of Pb decreased stem, leaf and root dry weights. Shoot phosphorus con
Braz. J. Bot.. Publicado em: 2012
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16. Rizobactérias promovem o crescimento de feijoeiro-comum e de milho por diferentes processos / Rhizobacteria promote growth of common bean and maize by different processes
Plant Growth Promoting Rhizobacteria (PGPR) promote the growth of legumes and non-legume plants enhancing their nutrition, mainly of nitrogen and phosphorus. For this purpose, these bacteria make use of mechanisms such as solubilization of insoluble inorganic phosphate, plant growth hormone production and biological fixation of nitrogen in the rhizosphere, i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2011
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17. Antibiose in vitro de rizobactérias promotoras do crescimento de plantas autóctones de feijoeiro comum contra Thanatephorus cucumeris.
Neste trabalho, buscou-se selecionar in vitro, por teste de antibiose direta, 50 isolados de rizobactérias, obtidas por diluição seriada de solo de rizosfera advindos de plantios de feijão sadios, capazes de inibir o crescimento de T. cucumeris, na sua forma imperfeita (Rhizoctonia solani).
REUNIÃO BRASILEIRA SOBRE CONTROLE BIOLÓGICO DE DOENÇAS DE PLANTAS. Publicado em: 2011
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18. Plant growth promoting rhizobacteria isolated of sugarcane under organic or conventional fertilization. / Rizobactérias promotoras de crescimento vegetal isoladas de cana-de-açúcar sob fertilização orgânica e/ou convencional.
We evaluated the fertilization effect (organic and conventional) on the sugarcane rhizobacteria physiology. We isolated and identified bacteria of five genera (Beijerinckia, Burkholderia, Enterobacter, Klebsiella and Pseudomonas) prevalent in sugarcane crops. The parameters investigated were: acetylene reduction, IAA and ethylene production, phosphate solubi
Publicado em: 2009
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19. Seleção de rizobactérias como promotoras de crescimento e indutoras de resistência sistêmica em feijoeiro / Selection of rhizobacteria as growth-promoters and inducers of systemic resistance in bean
Two hundred rhizobacteria obtained from rhizosphere and rhizoplane of healthy looking bean plants were investigated for their ability to promote growth in bean plants, increase grain yield and induce systemic resistance against leaf pathogens. In growth-promoting assays, bean seeds (Ouro Negro) were microbiolized with a propagule suspension and next sown und
Publicado em: 2006
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20. Cultura da alface : produção de mudas utilizando Bacillus spp., escala diagramática para cercosporiose e levantamento da doença em Pernambuco
Lettuce (Lactuca sativa L.) is one of the most consumed vegetables in the world. In spite of the importance of this crop in Pernambuco Brazil, there are no studies on the use of plant growth-promoting rhizobacteria for production of organic transplants, as well as a diagrammatic scale for evaluating the severity of Cercospora leaf spot (Cercospora longissima
Publicado em: 2003
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21. Efeito de bactérias na promoção de crescimento e no biocontrole da fusariose em mudas de abacaxi micropropagadas
A micropropagação do abacaxizeiro é importante pela qualidade e quantidade das mudas produzidas as quais, após 5 a 10 meses de aclimatação, serão levadas ao campo, onde estarão expostas a fatores adversos entre os quais, pragas e doenças. A fusariose causada por Fusarium subglutinans pode causar perdas de até 80% nos frutos e 20% nas mudas. Bactér
Publicado em: 2001
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22. Characterization of Rhizobacteria Associated with Weed Seedlings †
Rhizobacteria were isolated from seedlings of seven economically important weeds and characterized for potential phytopathogenicity, effects on seedling growth, and antibiosis to assess the possibility of developing deleterious rhizobacteria as biological control agents. The abundance and composition of rhizobacteria varied among the different weed species.
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23. Bacterial Volatiles Induce Systemic Resistance in Arabidopsis1
Plant growth-promoting rhizobacteria, in association with plant roots, can trigger induced systemic resistance (ISR). Considering that low-molecular weight volatile hormone analogues such as methyl jasmonate and methyl salicylate can trigger defense responses in plants, we examined whether volatile organic compounds (VOCs) associated with rhizobacteria can i
The American Society for Plant Biologists.
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24. Effect of Conditioning, Betaine, and Sucrose on Survival of Rhizobacteria in Powder Formulations
To assess the feasibility of simplified dry formulations of beneficial rhizobacteria with improved shelf life, strains of Pseudomonas and members of the family Enterobacteriaceae were conditioned by either aging, exposure to osmotica, or growth on media amended with sucrose or betaine. Strains thus treated were formulated in 1% methylcellulose and talc, and