Simultaneous P-solubilizing and biocontrol activity of microorganisms: potentials and future trends

Vassilev, Nikolay; Nikolaeva, Iana

doi:10.1007/s00253-006-0380-z

Cited by 381 publications

(189 citation statements)

References 82 publications

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“…encontraram correlação significativa apenas com massa seca da raiz em sorgo. Vários estudos tem sugerido que o modo de ação do antagonismo a fungos está relacionado à promoção de crescimento de plantas (Araujo et al, 2005;Idris et al, 2009;Bettiol, 1995;Romeiro, 2007;Vassilev et al, 2006). Neste estudo, todos os isolados bacterianos foram antagônicos a pelo menos uma espécie de fungo avaliado (Tabela 1).…”

Section: Resultsunclassified

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Bioprospecção de rizobactérias promotoras de crescimento em Brachiaria brizantha

2012

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Objetivou-se selecionar e caracterizar bactérias do gênero Bacillus em rizosfera de Brachiaria brizantha como promotoras de crescimento de plantas e correlacionar os diferentes critérios de seleção das bactérias utilizados em laboratório e casa-de-vegetação. Após coleta de amostras de plantas em três municípios da região oeste de São Paulo, foram realizados o isolamento de bactérias da rizosfera e posterior caracterização fenotípica quanto ao potencial de colonização de raízes de braquiária, antagonismo a fungos fitopatogênicos, produção de auxinas, fosfatases e proteases, além da caracterização genotípica utilizando a técnica de PCR-RAPD. Como avaliação final dos isolados bacterianos foi realizado experimento em casa-de-vegetação com inoculação de sementes e cultivo de Braquiaria brizantha com efetivação de três cortes, durante 180 dias. O experimento foi distribuído em delineamento inteiramente casualizado com quatro repetições. Dos 45 isolados de Bacillus sp. avaliados, sete foram competentes para colonização radicular e três (1A, 2B e 6A) foram capazes de promover o crescimento de Brachiaria brizantha, na média de três cortes efetuados na cultura. A avaliação da produção de auxinas e fosfatases foi relevante no protocolo de seleção dos isolados de Bacillus sp. como promotores de crescimento de plantas. A produção de proteases foi detectada em todos os isolados avaliados, mas não houve correlação desta característica com o crescimento das plantas.

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Section: Resultsunclassified

“…No entanto, em alguns trabalhos, a promoção de crescimento de plantas, por rizobactérias, também tem sido relacionada à produção de fitohormônios e enzimas líticas (Vassilev et al, 2006).…”

Section: Introductionunclassified

Bioprospecção de rizobactérias promotoras de crescimento em Brachiaria brizantha

2012

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“…One advantage of utilizing P‐liberating bacteria in agricultural systems is that they can have synergistic beneficial effects, for example, pathogen suppression (Vassilev et al ., 2006). The majority of research into P mobilization by PGPR has focused on the solubilization of inorganic P through acidification of the surrounding soil via the release of organic acids, namely gluconic acid (Rodrı'guez and Fraga, 1999; Miller et al ., 2010; Oteino et al ., 2015).…”

Section: Introductionmentioning

confidence: 99%

Comparative genomic, proteomic and exoproteomic analyses of three Pseudomonas strains reveals novel insights into the phosphorus scavenging capabilities of soil bacteria

Lidbury

Murphy

Scanlan

et al. 2016

Environmental Microbiology

137

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SummaryBacteria that inhabit the rhizosphere of agricultural crops can have a beneficial effect on crop growth. One such mechanism is the microbial‐driven solubilization and remineralization of complex forms of phosphorus (P). It is known that bacteria secrete various phosphatases in response to low P conditions. However, our understanding of their global proteomic response to P stress is limited. Here, exoproteomic analysis of Pseudomonas putida BIRD‐1 (BIRD‐1), Pseudomonas fluorescens SBW25 and Pseudomonas stutzeri DSM4166 was performed in unison with whole‐cell proteomic analysis of BIRD‐1 grown under phosphate (Pi) replete and Pi deplete conditions. Comparative exoproteomics revealed marked heterogeneity in the exoproteomes of each Pseudomonas strain in response to Pi depletion. In addition to well‐characterized members of the PHO regulon such as alkaline phosphatases, several proteins, previously not associated with the response to Pi depletion, were also identified. These included putative nucleases, phosphotriesterases, putative phosphonate transporters and outer membrane proteins. Moreover, in BIRD‐1, mutagenesis of the master regulator, phoBR, led us to confirm the addition of several novel PHO‐dependent proteins. Our data expands knowledge of the Pseudomonas PHO regulon, including species that are frequently used as bioinoculants, opening up the potential for more efficient and complete use of soil complexed P.

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“…Microbially mediated solubilization of insoluble phosphates through release of organic acids is often combined with production of other metabolites, which take part in biological control against soilborne phytopathogens 2 . The microorganisms favour to colonize the plant rhizosphere 2 . The bio-fertilizers of phosphate supplied by using PSM have been developed for sustainable agriculture.…”

Section: Introductionmentioning

confidence: 99%

Identification of phosphate-solubilizing fungi from the asparagus rhizosphere as antagonists of the root and crown rot pathogen Fusarium oxysporum

Ruangsanka¹

2014

ScienceAsia

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Identification of phosphate solubilizing fungi in the root zone of asparagus that can inhibit the growth of root and crown rot pathogen (Fusarium oxysporum) is important for the development of bio-fertilizer and bio-control strategies for organic production of asparagus. This study aimed to identify fungi with the ability to solubilize phosphate and inhibit the growth of F. oxysporum in vitro. Twenty five soil samples were collected from the asparagus rhizosphere in the planting areas of Dan Ma Kham Tea district, Kanchanaburi province, Thailand. A total of 59 fungi that could solubilize phosphate in Pikovskaya medium were isolated from 25 soil samples. Fourteen out of 59 fungal isolates were further screened and four isolates were selected. These isolates were tested for growth inhibition of F. oxysporum. One isolate was identified as Penicillium oxalicum and had the highest phosphate solubilizing ability (556 mg P/l). Another isolate was identified as Aspergillus niger and had the highest pathogen inhibition percentage (64%). These isolates are promising for the development of bio-fertilizer and bio-control of F. oxysporum for organic production of asparagus.

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Simultaneous P-solubilizing and biocontrol activity of microorganisms: potentials and future trends

Cited by 381 publications

References 82 publications

Bioprospecção de rizobactérias promotoras de crescimento em Brachiaria brizantha

Bioprospecção de rizobactérias promotoras de crescimento em Brachiaria brizantha

Comparative genomic, proteomic and exoproteomic analyses of three Pseudomonas strains reveals novel insights into the phosphorus scavenging capabilities of soil bacteria

Identification of phosphate-solubilizing fungi from the asparagus rhizosphere as antagonists of the root and crown rot pathogen Fusarium oxysporum

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