Uso de Bacillus subtilis no controle da meloidoginose e na promoção do crescimento do tomateiro

Araújo, Fábio Fernando de; Marchesi, Gabriel Victor Poletto

doi:10.1590/s0103-84782009000500039

Cited by 39 publications

(27 citation statements)

References 13 publications

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“…Most of the bacterial isolates found in the environment do not promote plant growth (Lugtenberg & Kamilova, 2009). Some Bacillus strains are able to promote plant growth in different botanical families, such as tomato, bean, and okra (Dawar et al, 2008;Araújo & Marchesi, 2009;Khan et al, 2010). However, other isolates do not stimulate the development of the same crops (Khan et al, 2010;Vaz et al, 2011;Fernandes et al, 2013).…”

Section: Greenhouse Experimentsmentioning

confidence: 99%

“…The formation of resistant spores is a desirable feature for a biocontrol agent, since it provides greater field survival and longer shelf life to products formulated therefrom. In addition, Bacillus-based products are more environmentally safe than chemicals, and are compatible with conventional farming practices (Chen & Dickinson, 2004 (Kavitha et al, 2007;Lian et al, 2007;Tian et al, 2007;Mohammed et al, 2008;Araújo & Marchesi, 2009;Ann, 2013). The mechanisms of action of these bacteria against nematodes involve the production of nematotoxic substances, modification of root exudates of host plants, systemic resistance induction, and production of lethal proteases within the gut following the ingestion of the bacteria by the nematode (Araújo et al, 2002;Kavitha et al, 2007;Lian et al, 2007;Tian et al, 2007;Mohammed et al, 2008;Niu et al, 2010;Ann, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Bacillus spp. isolates for the control of Meloidogyne incognita in common bean

et al. 2018

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The objective of this work was to evaluate the effect of Bacillus spp. isolates on the control of Meloidogyne incognita in greenhouse and field experiments. In the greenhouse, isolates 57 (Bacillus sp.), 63 (Bacillus amyloliquefaciens), SF 194 (Bacillus sp.), SF 203 (Bacillus amyloliquefaciens), and a mixture containing the four isolates were applied to the soil surface (2 L ha -1 , 1×10 9 cfu mL -1 ), infested with 5,000 eggs of M. incognita. Sixty days after planting, the mass of the bean roots and the number of galls and eggs were evaluated. In a field naturally infested with M. incognita, the effects of isolates 57, 63, and a mixture containing both of them were observed after application to the soil surface (2 L ha -1 ), with or without seed treatment with the isolates (2 mL kg -1 ). Production, thousand-grain weight, reproductive factor, and number of eggs were evaluated at 90 days after planting. In the greenhouse, the application of the isolates did not influence neither root biomass, nor the number of galls and eggs. In the field, the application of isolates 57, 63, and the mixture 57 + 63 on the soil surface and in seed treatment did not increase total production and thousand-grain weight, nor did it reduce the nematode multiplication in the soil and in the roots of the plants. Thus, Bacillus spp. isolates 57, 63, SF 194, and SF 203 have no potential to formulate bionematicides for the control of M. incognita in common bean.Additional keywords: biological control, Phaseolus vulgaris, root-knot nematode. ResumoO objetivo deste trabalho foi avaliar o efeito de isolados de Bacillus spp. no controle de Meloidogyne incognita em casa de vegetação e em campo. Em casa de vegetação, os isolados 57 (Bacillus sp.), 63 (Bacillus amyloliquefaciens), SF 194 (Bacillus sp.), SF 203 (Bacillus amyloliquefaciens) e uma mistura contendo os quatro isolados foram aplicados na superfície do solo (2 L ha -1 , 1×10 9 ufc mL -1 ) infestado com 5.000 ovos de M. incognita. Após 60 dias do plantio, a massa das raízes de feijoeiro e os números de galhas e ovos foram avaliados. Em campo naturalmente infestado com M. incognita, avaliaram-se os efeitos dos isolados 57; 63 e uma mistura contendo os isolados 57 e 63, aplicados na superfície do solo (2 L ha -1 ), com ou sem o tratamento de sementes com os isolados (2 mL kg -1 ). A produção e a massa de mil grãos, o fator de reprodução e o número de ovos foram avaliados aos 90 dias após o plantio. Em casa de vegetação, a aplicação dos isolados não influenciou a biomassa das raízes e o número de galhas e de ovos. Em campo, a aplicação dos isolados 57; 63 e a mistura 57 + 63 na superfície do solo e em tratamento de sementes não aumentaram a produção total e a massa de mil grãos, tampouco reduziram a multiplicação do nematoide no solo e nas raízes das plantas. Assim, os isolados 57; 63; SF 194 e SF 203 de Bacillus spp. não possuem potencial para formulação de bionematicidas para o controle de M. incognita em feijoeiro.Palavras-chave adicionais: controle biológico, nematoide de galha...

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Section: Greenhouse Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bacillus spp. isolates for the control of Meloidogyne incognita in common bean

et al. 2018

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“…Some species of plants have been frequently studied in relation to the effect of the rhizobacteria, like pumpkin (Chen et al, 2000), wheat (Luz, 2001), beet (Cakmakci et al, 2006), eucalyptus (Mafia et al, 2009), onion (Harthmann et al, 2009(Harthmann et al, , 2010 and tomato (Araújo & Marchesi, 2009).…”

Section: Palavras-chavementioning

confidence: 99%

Agronomic performance of okra under the effect of seed microbiolization with rhizobacteria

et al. 2017

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Plant-growth promoting rhizobacteria are an alternative to increase the productivity, adding value to the productive system of crops like okra. We aimed to evaluate the agronomic characteristics of okra genotypes after seed microbiolization with nine strains of rhizobacteria. The experimental design was in randomized blocks, in a 2x10 factorial scheme, using two okra genotypes, cultivar Santa Cruz 47 and hybrid Dardo, nine strains of rhizobacteria, LEBM 103, 105, 109, 112, 118, 134, 135, 152 RESUMODesempenho agronômico de cultivares de quiabeiro sob efeito da microbiolização das sementes com rizobactérias As rizobácterias promotoras de crescimento de plantas surgem como alternativa para incrementar a produtividade, agregando valor ao sistema produtivo de culturas como o quiabeiro. Este trabalho objetivou avaliar o rendimento agronômico de duas cultivares de quiabeiro após a microbiolização das sementes com nove cepas de rizobactérias. O delineamento experimental utilizado foi em blocos inteiramente casualizados, em esquema fatorial 2x10, sendo dois genótipos de quiabo, cultivar Santa Cruz 47 e híbrido Dardo, nove cepas de rizobactéria, LEBM 103, 105, 109, 112, 118, 134, 135, 152 e 154, além de uma testemunha (sem microbiolização), com quatro repetições. As variáveis analisadas foram: número de frutos por planta (NFP); diâmetro médio dos frutos (DM); produtividade (PDT); massa fresca dos frutos por planta (MFFP) e massa média por fruto (MMF). Verificou-se que a utilização das rizobactérias LEBM 109, 112, 152 e 154 condicionou maiores valores de MFFP (1202,7; 1086,5; 1158,2 e 1175,9 g, respectivamente), PDT (24,1; 21,7; 23,2 e 23,5 t/ha, respectivamente) e NFP (78,0; 69,4; 73,27 e 76,5, respectivamente), em relação às demais cepas e à não utilização da microbiolização das sementes do hibrido Dardo. Para a cultivar Santa Cruz 47 as rizobactérias LEBM 105, 112 e 152 proporcionaram maiores valores de MFFP (896,7; 769,0 e 762,2 g, respectivamente). Avaliando-se os genótipos ao utilizar cada rizobactéria, para as variáveis MFFP e PDT, verificou-se que apenas para a rizobactéria LEBM 105, não houve diferenças entre os genótipos. Conclui-se, que a microbiolização de sementes de quiabo com rizobactérias pode proporcionar ganhos de produtividade e com potencial de se tornar uma técnica viável. As rizobactérias mais recomendadas para o cultivo do híbrido Dardo são a LEBM 109, 112, 152 e 154, enquanto para o cultivo da cv. Santa Cruz 47 são as cepas LEBM 105, 112 e 152. Palavras-chave:Abelmoschus esculentus, microorganismo da rizosfera, genótipos de quiabo.

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“…and some sporulating bacteria, which are considered to be biocontroller bacteria and plant growth-promoting bacteria (BPCPs) (Araújo and Marchesi, 2009;Ferreira et al, 2009). These bacteria may promote the growth of plants using different mechanisms, among them, the production of plant hormones; however, few studies report the influence of agricultural practices on the populations of sporulating bacteria and fluorescent Pseudomonas sp.…”

Section: Rev Bras Cienc Solo 2016;40:e0160130mentioning

confidence: 99%

“…and fluorescent Pseudomonas sp., have major agricultural importance since, in addition to favoring plant development, they may act as biological control agents for plant diseases. Several researchers have reported on the importance of these bacteria for development of different crops and induction of resistance to and control of phytopathogens that attack both the shoots and root system of the plant (Teixeira et al, 2005;Araújo and Marchesi, 2009). …”

Section: Introductionmentioning

confidence: 99%

Microbial Communities in Soil Cultivated with Muskmelon under Different Management Systems

Nascimento

Cruz

Dantas

et al. 2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:Microorganisms have a fundamental importance in agricultural ecosystems and may be influenced by several factors, including soil management. The aim of this study was to evaluate the effects of cropping systems and soil covers on the microbial community in soil cultivated with muskmelon (Cucumis melo L.). The experiment was conducted in a randomized complete block design with four replications. The treatments were arranged in a split plot design with cropping systems (no-tillage and conventional tillage systems) assigned to the whole plot treatments, while a group of seven soil covers (sunn hemp; millet; sunn hemp + millet; corn + brachiaria; spontaneous vegetation; bare soil; and spontaneous vegetation + polyethylene film) defined the subplot treatments. Total bacteria, sporulating bacteria, fluorescent Pseudomonas sp., and total fungi were quantified at six different times (in fallow soil, at planting of green manures in the soil, when transplanting muskmelon seedlings, and 20, 40, and 60 days after transplanting [DAT]). To determine the quantity of microorganisms, the plate count method was used, with a specific culture medium for the groups. The cultivation of sunn hemp associated with no-tillage at transplanting of muskmelon showed a greater quantity of colony forming units (CFUs) of total bacteria compared to the conventional tillage system. In most treatments, conventional tillage showed greater amounts of sporulating bacteria in relation to no-tillage at the time of transplanting muskmelon and at 40 DAT. The tillage systems and soil cover did not change the total amount of fungi and fluorescent Pseudomonas sp.

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Uso de Bacillus subtilis no controle da meloidoginose e na promoção do crescimento do tomateiro

Cited by 39 publications

References 13 publications

Bacillus spp. isolates for the control of Meloidogyne incognita in common bean

Bacillus spp. isolates for the control of Meloidogyne incognita in common bean

Agronomic performance of okra under the effect of seed microbiolization with rhizobacteria

Microbial Communities in Soil Cultivated with Muskmelon under Different Management Systems

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