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| Oliveira,Christiane Abreu de; Marriel,Ivanildo Evódio; Gomes,Eliane Aparecida; Lana,Ubiraci Gomes de Paula; Scotti,Maria Rita; Alves,Vera Maria Carvalho. |
| O objetivo deste trabalho foi avaliar a diversidade funcional e genética de bactérias associadas à rizosfera de genótipos de milho contrastantes quanto à eficiência de uso de fósforo, por meio do teste de fontes de carbono no sistema EcoPlate e da eletroforese em gel de gradiente desnaturante (DGGE) dos fragmentos amplificados dos genes 16S ribossomais (rDNA) das bactérias. Foram coletadas amostras de solo da rizosfera de linhagens e híbridos contrastantes quanto à eficiência de uso de fósforo, cultivados em Latossolo Vermelho-Escuro fase cerrado, com baixo e alto teor de P. Bactérias da rizosfera de híbridos e linhagens eficientes, sob estresse de P, analisadas pelo sistema EcoPlate, tenderam a se agrupar conforme a análise de componentes principais, o... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Deficiência de fósforo; Ecologia microbiana; PCR-DGGE; Sistema EcoPlate. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001100015 |
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| Ribeiro,Vitória Palhares; Marriel,Ivanildo Evódio; Sousa,Sylvia Morais de; Lana,Ubiraci Gomes de Paula; Mattos,Bianca Braz; Oliveira,Christiane Abreu de; Gomes,Eliane Aparecida. |
| Abstract Bacterial endophytes are considered to have a beneficial effect on host plants, improving their growth by different mechanisms. The objective of this study was to investigate the capacity of four endophytic Bacillus strains to solubilize iron phosphate (Fe-P), produce siderophores and indole-acetic acid (IAA) in vitro, and to evaluate their plant growth promotion ability in greenhouse conditions by inoculation into pearl millet cultivated in a P-deficient soils without P fertilization, with Araxá rock phosphate or soluble triple superphosphate. All strains solubilized Fe-P and three of them produced carboxylate-type siderophores and high levels of IAA in the presence of tryptophan. Positive effect of inoculation of some of these strains on shoot... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endophytic; Indole-acetic acid; Phosphate solubilizing; Plant growth promotion; Siderophores. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500040 |
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| Calazans,Giovanna Moura; Oliveira,Christiane Abreu de; Cruz,José Carlos; Matrangolo,Walter José Rodrigues; Marriel,Ivanildo Evódio. |
| ABSTRACT: Cratylia argentea is a leguminous shrub native to the cerrado, which has great potential for forage production and recovery of degraded areas. This study aimed to isolate, characterize, and select efficient rhizobial strains in symbiosis with Cratylia argentea . Rhizobacteria were isolated from the nodules of 12-month-old plants and cultivated in pots containing cerrado soil. Twenty-five bacterial strains were obtained, which displayed extensive variability with respect to morphological and symbiotic characteristics. Cratylia argentea seeds were planted in pots containing 5kg of cerrado soil and maintained in the greenhouse. The treatments consisted of 25 rhizobial isolates, two controls (without nitrogen and without inoculation), with or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological fixation; Legumes; Cerrado. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901594 |
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