Base de dados : LILACS
Pesquisa : B03.353.500 [Categoria DeCS]
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Id: biblio-839377
Autor: Chauhan, Anjali; Guleria, Shiwani; Balgir, Praveen P; Walia, Abhishek; Mahajan, Rishi; Mehta, Preeti; Shirkot, Chand Karan.
Título: Tricalcium phosphate solubilization and nitrogen fixation by newly isolated Aneurinibacillus aneurinilyticus CKMV1 from rhizosphere of Valeriana jatamansi and its growth promotional effect
Fonte: Braz. j. microbiol;48(2):294-304, April.-June 2017. tab, graf.
Idioma: en.
Resumo: Abstract Aneurinibacillus aneurinilyticus strain CKMV1 was isolated from rhizosphere of Valeriana jatamansi and possessed multiple plant growth promoting traits like production of phosphate solubilization (260 mg/L), nitrogen fixation (202.91 nmol ethylene mL-1 h-1), indole-3-acetic acid (IAA) (8.1 µg/mL), siderophores (61.60%), HCN (hydrogen cyanide) production and antifungal activity. We investigated the ability of isolate CKMV1 to solubilize insoluble P via mechanism of organic acid production. High-performance liquid chromatography (HPLC) study showed that isolate CKMV1 produced mainly gluconic (1.34%) and oxalic acids. However, genetic evidences for nitrogen fixation and phosphate solubilization by organic acid production have been reported first time for A. aneurinilyticus strain CKMV1. A unique combination of glucose dehydrogenase (gdh) gene and pyrroloquinoline quinone synthase (pqq) gene, a cofactor of gdh involved in phosphate solubilization has been elucidated. Nitrogenase (nif H) gene for nitrogen fixation was reported from A. aneurinilyticus. It was notable that isolate CKMV1 exhibited highest antifungal against Sclerotium rolfsii (93.58%) followed by Fusarium oxysporum (64.3%), Dematophora necatrix (52.71%), Rhizoctonia solani (91.58%), Alternaria sp. (71.08%) and Phytophthora sp. (71.37%). Remarkable increase was observed in seed germination (27.07%), shoot length (42.33%), root length (52.6%), shoot dry weight (62.01%) and root dry weight (45.7%) along with NPK (0.74, 0.36, 1.82%) content of tomato under net house condition. Isolate CKMV1 possessed traits related to plant growth promotion, therefore, could be a potential candidate for the development of biofertiliser or biocontrol agent and this is the first study to include the Aneurinibacillus as PGPR.
Descritores: Reguladores de Crescimento de Planta/metabolismo
Valeriana/microbiologia
Fosfatos de Cálcio/metabolismo
Lycopersicon esculentum/crescimento & desenvolvimento
Bacillales/isolamento & purificação
Fixação de Nitrogênio
-Microbiologia do Solo
Cromatografia Líquida de Alta Pressão
Lycopersicon esculentum/microbiologia
Raízes de Plantas/microbiologia
Biomassa
Bacillales/metabolismo
Rizosfera
Fungos/crescimento & desenvolvimento
Antibiose
Responsável: BR1.1 - BIREME


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Id: lil-741277
Autor: Venkadesaperumal, Gopu; Amaresan, Natrajan; Kumar, Krishna.
Título: Plant growth promoting capability and genetic diversity of bacteria isolated from mud volcano and lime cave of Andaman and Nicobar Islands
Fonte: Braz. j. microbiol;45(4):1271-1281, Oct.-Dec. 2014. ilus, tab.
Idioma: en.
Resumo: Twenty four bacterial strains from four different regions of mud volcano and lime cave were isolated to estimate their diversity, plant growth promoting and biocontrol activities to use them as inoculant strains in the fields. An excellent antagonistic effect against four plant pathogens and plant growth promoting properties such as IAA production, HCN production, phosphate solubilization, siderophore production, starch hydrolysis and hydrolytic enzymes syntheses were identified in OM5 (Pantoea agglomerans) and EM9 (Exiguobacterium sp.) of 24 studied isolates. Seeds (Chili and tomato) inoculation with plant growth promoting strains resulted in increased percentage of seedling emergence, root length and plant weight. Results indicated that co-inoculation gave a more pronounced effects on seedling emergence, secondary root numbers, primary root length and stem length, while inoculation by alone isolate showed a lower effect. Our results suggest that the mixed inocula of OM5 and EM9 strains as biofertilizers could significantly increase the production of food crops in Andaman archipelago by means of sustainable and organic agricultural system.
Descritores: Bacillales/isolamento & purificação
Capsicum/microbiologia
Microbiologia Ambiental
Lycopersicon esculentum/microbiologia
Desenvolvimento Vegetal
Pantoea/isolamento & purificação
Reguladores de Crescimento de Planta/metabolismo
-Biomassa
Bacillales/classificação
Bacillales/genética
Bacillales/metabolismo
Capsicum/fisiologia
DNA Bacteriano/química
DNA Bacteriano/genética
DNA Ribossômico/química
DNA Ribossômico/genética
Índia
Ilhas
Lycopersicon esculentum/fisiologia
Dados de Sequência Molecular
Pantoea/classificação
Pantoea/genética
Pantoea/metabolismo
Raízes de Plantas/crescimento & desenvolvimento
/genética
RNA, RIBOSOMAL, ABNORMALITIES, MULTIPLES/genética
Análise de Sequência de DNA
Plântulas/crescimento & desenvolvimento
Responsável: BR1.1 - BIREME



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