Consulta: subjectFacets:"Plant-bacteria interaction"
Registros recuperados: 4
Data/hora: 13/06/2024 06:26:45

Plant growth-promoting bacteria as inoculants in agricultural soils
Provedor de dados: 74
Autores: Souza,Rocheli de; Ambrosini,Adriana; Passaglia,Luciane M.P.
Abstract Plant-microbe interactions in the rhizosphere are the determinants of plant health, productivity and soil fertility. Plant growth-promoting bacteria (PGPB) are bacteria that can enhance plant growth and protect plants from disease and abiotic stresses through a wide variety of mechanisms; those that establish close associations with plants, such as the endophytes, could be more successful in plant growth promotion. Several important bacterial characteristics, such as biological nitrogen fixation, phosphate solubilization, ACC deaminase activity, and production of siderophores and phytohormones, can be assessed as plant growth promotion (PGP) traits. Bacterial inoculants can contribute to increase agronomic efficiency by reducing production costs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen fixation; Siderophore production; Plant-bacteria interaction; Inoculant; Rhizosphere.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000400401

Analysis of 16S rRNA and mxaF genes reveling insights into Methylobacterium niche-specific plant association
Provedor de dados: 74
Autores: Dourado,Manuella Nóbrega; Andreote,Fernando Dini; Dini-Andreote,Francisco; Conti,Raphael; Araújo,Janete Magali; Araújo,Welington Luiz.
The genus Methylobacterium comprises pink-pigmented facultative methylotrophic (PPFM) bacteria, known to be an important plant-associated bacterial group. Species of this group, described as plant-nodulating, have the dual capacity of producing cytokinin and enzymes, such as pectinase and cellulase, involved in systemic resistance induction and nitrogen fixation under specific plant environmental conditions. The aim hereby was to evaluate the phylogenetic distribution of Methylobacterium spp. isolates from different host plants. Thus, a comparative analysis between sequences from structural (16S rRNA) and functional mxaF (which codifies for a subunit of the enzyme methanol dehydrogenase) ubiquitous genes, was undertaken. Notably, some Methylobacterium spp....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phylogenetic diversity; Methylotrofics; PPFM; Plant-bacteria interaction.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000100020

Seed quality, chlorophyll content index and leaf nitrogen levels in maize inoculated with Azospirillum brasilense
Provedor de dados: 124
Autores: Pereira,Lívia de Matos; Pereira,Elise de Matos; Revolti,Lucas Tadeu Mazza; Zingaretti,Sonia Marli; Môro,Gustavo Vitti.
ABSTRACTThe aim of this study was to evaluate differences between maize genotypes in relation to the germination response of the seeds and the growth of seedlings inoculated with Azospirillum brasilense, as well as the effect of inoculation on nitrogen levels and the chlorophyll content index of the leaves. The physiological seeds quality from the single-cross hybrids AG7098 and 2B707, and from the experimental synthetic varieties V2 and V4, inoculated with A. brasilense, was tested for germination, percentage and rate of emergence, and dry matter weight of the shoots and roots. Nitrogen levels and chlorophyll content index were evaluated in leaves of the same four genotypes grown in a greenhouse under different nitrogen supply systems and methods of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Diazotrophic bacteria; Biological nitrogen fixation; Plant-bacteria interaction.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000300630

Endophytic bacteria affect sugarcane physiology without changing plant growth
Provedor de dados: 53
Autores: Marcos,Fernanda Castro Correia; Iório,Raquel de Paula Freitas; Silveira,Adriana Parada Dias da; Ribeiro,Rafael Vasconcelos; Machado,Eduardo Caruso; Lagôa,Ana Maria Magalhães de Andrade.
ABSTRACT The aim of this study was to evaluate if endophytic bacteria inoculants would be beneficial to the sugarcane varieties IACSP94-2094 and IACSP95-5000, promoting changes in photosynthesis and plant growth. The plants, obtained from mini stalks with one bud, were treated with two bacteria mixtures (inoculum I or II) or did not receive any inoculum (control plants). The inocula did not affect shoot and root dry matter accumulation as compared to the control condition (plants with native endophytic bacteria). However, photosynthesis and electron transport rate (ETR) increased in IACSP94-2094 treated with the inoculum II, whereas the inoculum I enhanced photosynthesis and stomatal conductance in IACSP95-5000. The inoculum II caused increase in leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Plant-bacteria interaction; Photosynthesis; Nitrogen; Mini stalks with one bud.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000100001