Microbiolização de sementes para o controle da mancha-parda e da escaldadura em arroz irrigado

Ludwig, Juliane; Moura, Andrea Bittencourt; Santos, André S. dos; Ribeiro, Alcéu Sallaberry

doi:10.1590/s1982-56762009000500005

Cited by 27 publications

(23 citation statements)

References 13 publications

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“…The most studied genera are rhizobia, Azospirillum, Bacillus and fluorescent Pseudomonas, that stimulate diverse plants in their development, from the germination until the production, reinforcing sustainable agriculture (HUNGRIA; NOGUEIRA; ARAÚJO, 2016; HUNGRIA; NOGUEIRA; ARAÚJO, 2013;VOGEL et al, 2013;REPKE et al 2013;FIORINI et al 2012;FILHO, 2010;MOREIRA et al, 2010;SILVEIRA, 2007;HUNGRIA et al, 2001). In addition, some isolates of the genera can suppress phytopathogens LUDWIG et al, 2009) by producing secondary metabolites, such as siderophores and antibiotics (BOTELHO; MENDONÇA-HAGLER, 2006;VOYARD et al, 1994;LOPER, 1991). Several reports of the plant development improvement, such as corn, beans, cotton, soybeans and rice inoculated with isolates from genera Bacillus and fluorescent Pseudomonas are described (FERREIRA; KNUPP; MARTIN-DIDONET, 2014;CHAVES;ZUCARELI;JUNIOR, 2013;SILVA, 2013;ASSUNPÇÃO et al, 2009;ARAUJO, 2008;LAZZARETI MELO, 2005;ARAÚJO;HUNGRIA, 1999).…”

Section: Introductionmentioning

confidence: 99%

ISOLATION AND CHARACTERIZATION OF PLANT GROWTH PROMOTING BACTERIA ISOLATED FROM GARLIC (allium sativum).

Botelho¹,

Leoncio

2017

RSA

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-Garlic has great economic and social importance in Santa Catarina. It is a demanding crop in nutrients, being necessary high amount of chemical fertilizers, increasing the cost of production and the environmental impact. An alternative to the use of inputs are Rizobacteria Promoting Plant Growth (RPCP). Among the RPCPs, the most studied genera are Azospirillum, Bacillus and Pseudomonas of the fluorescent group that have shown benefits for the growth of several plant species. In this context, isolates of RPCP obtained from the rhizosphere of garlic maintained in protected cultivation were phenotypically and genotypically characterized and a growth promotion test in vivo was carried out, in protected cultivation. The biochemical tests used for phenotypic characterization were glucose and sucrose fermentation, Methyl Red (MR), catalase production and urea hydrolysis. The potential of plant growth induction was also evaluated by analyzing the production capacity of IAA (Indol-Acetic Acid) and calcium phosphate solubilization in vitro. Twenty-seven isolates were obtained. For the biochemical tests, 21 isolates were able to ferment glucose and 26, sucrose. For the other tests, all isolates showed a positive reaction. As for the mechanisms of plant growth promotion, 81.5% and 66.6% of the isolates presented IAA production and phosphate solubilizing capacity, respectively. The in vivo growth promotion test using maize (Zea mays) as a model indicated that the tested isolates (EB02, EB16, EB14, EB26, EB23) showed similarity to the treatment with 100% recommended nitrogen fertilization. The isolates were identified by sequencing the 16S rRNA gene. Fourteen isolates (51, 85% of the collection) were identified as Bacillus subtillis, including those tested in planta. These microorganisms present potential for the promotion of plant growth.Key words: growth promotion, rizobacteria, liliacea, corn.Resumo -O alho possui grande importância econômica e social em Santa Catarina. É um cultivo exigente em nutrientes, sendo necessária elevada quantidade de fertilizantes químicos, incrementando o custo de produção e o impacto ambiental. Uma alternativa ao uso de insumos são as Rizobactérias Promotoras de Crescimento de Plantas (RPCP). Dentre as RPCPs, os gêneros mais estudados são Azospirillum, Bacillus e Pseudomonas do grupo fluorescente que têm demonstrado benefícios para o crescimento de várias espécies vegetais. Neste contexto, foram caracterizados, fenotípica e genotipicamente, isolados de RPCP obtidos da rizosfera de alho mantido em cultivo protegido e realizado teste de promoção de crescimento in vivo, também em cultivo protegido. Os testes bioquímicos utilizados para caracterização fenotípica foram fermentação de glicose e sacarose, Vermelho de Metila (VM), produção de catalase e hidrólise da ureia. Também foi avaliado o potencial de indução do crescimento vegetal, mediante análise da capacidade de produção de AIA (Ácido Indol-Acético) e de solubilização de fosfatos de cálcio in vitro. Foram obtidos 27 isolados. Para ...

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Section: Introductionmentioning

confidence: 99%

ISOLATION AND CHARACTERIZATION OF PLANT GROWTH PROMOTING BACTERIA ISOLATED FROM GARLIC (allium sativum).

Botelho¹,

Leoncio

2017

RSA

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“…Isolated Bacillus spp. was reported as having the control potential of scalding in rice (Gerlachia oryzae) through the micro-priming of seeds (LUDWIG et al, 2009) and control of fungi transmitted by oat seeds .…”

Section: Resultsmentioning

confidence: 99%

Effect of priming and seed-coating when associated with Bacillus subtilis in maize seeds

Junges¹,

Toebe²,

Santos³

et al. 2013

Rev. Ciênc. Agron.

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-The aim of this study was to evaluate the effect on the physiological performance of maize seeds (Zea mays L.) of micro-priming with Bacillus subtilis associated with techniques of water restriction and seed-coating. The micro-priming of the seeds, without any additional techniques, was carried out using a commercial product, Rhizoliptus ® (Bacillus subtilis). Water restriction was carried out using a PDA medium (Potato -Dextrose -Agar) with mannitol (-0.7 MPa), upon which the culture was grown for 48hours. One hundred sterilized corn seeds were placed in each dish. Once root protrusion occurred in one seed, the rest were removed and kept in a laboratory environment for 48 hours. The coating was carried out by the addition of Seed Polymer Color HE (50 ml kg -1 ) to the priming mixture containing the Bacillus subtilis. The seeds were kept for 48 hours in a laboratory environment. A treatment which associated seed coating and water restriction was used on the micro-primed seeds, together with a control treatment without the addition of Bacillus subtilis. The Bacillus subtilis has no effect on the health of the seeds it; does however contribute to the growth and development of the maize seedlings, being influenced by the micropriming technique used. The use of water restriction associated with seed coating provides better results when micro-priming with Bacillus subtilis.Key words: Polymer. Priming. Initial growth and development. Zea mays L.. RESUMO -O objetivo deste trabalho foi avaliar o efeito da microbiolização de sementes comBacillus subtilis, associada às técnicas de restrição hídrica e peliculização sobre o desempenho fisiológico de sementes de milho (Zea mays L.). A microbiolização das sementes sem técnica adicional foi realizada com o produto comercial Rhizoliptus ® (Bacillus subtilis). A restrição hídrica foi realizada em meio BDA (Batata -Dextrose -Ágar) + manitol (-0,7 MPa), sobre o qual a bactéria foi cultivada por 48 h. Foram distribuídas 100 sementes de milho desinfestadas em cada placa. Quando houve protrusão radicular na primeira semente, as demais foram retiradas e mantidas em ambiente de laboratório por 48 h. A peliculização foi realizada com a adição do polímero Color Seed HE (50 mL kg -1 ) à calda de tratamento contendo Bacillus subtilis. As sementes foram mantidas por 48 h em ambiente de laboratório. Foi utilizado um tratamento associando a peliculização e a restrição hídrica nas sementes microbiolizadas e ainda, um tratamento testemunha, sem adição de Bacillus subtilis. Bacillus subtilis não apresenta efeito sobre a sanidade de sementes, entretanto, contribui para o crescimento e desenvolvimento de plântulas de milho, sendo influenciado pela técnica de microbiolização utilizada. A associação da restrição hídrica com a peliculização proporciona melhor desempenho no efeito da microbiolização com Bacillus subtilis.

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“…Cohn). These strains were preselected, once they are able in controlling diseases and promoting development of rice plants; according to data already published by Moura, 2007 andLudwig et al, 2009.…”

Section: Methodsmentioning

confidence: 99%

Physiological potential of rice seeds treated with rhizobacteria or the insecticide thiamethoxam

Soares

Tillmann

Moura

et al. 2012

Rev. bras. sementes

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ABSTRACT-Development of new technologies, aiming at increasing productivity in different crops, involves constant research on the effectiveness and application of these techniques in seed treatment. In this study, it was aimed at evaluating physiological potential of rice seeds treated with plant growth-promoting rhizobacteria (PGPR) (strains DFs185, DFs223, DFs306, DFs416), or with two dosages of the insecticide thiamethoxam. The variables assessed were: germination (G); first count of germination (FCG); cold test (CT); length of seedlings aerial parts (LAP), root system (LRS), and total length (TL); emergence speed index (ESI); emergence (E), at 14 days; and dry phytomass (DP). Treatments have had a positive effect on percentage of G, FCG and E. The strain DFs185 has promoted increase in percentage emergence, for five of the six lots assessed. The variables: LAP; LRS; TL; ESI; and DP have undergone low or none influence of treatments; and there has been no toxic effect of rhizobacteria or insecticide thiamethoxam. In the cold test, a negative effect of treatments has been detected. Seed treatment with rhizobacteria, as well as with thiamethoxam, improve quality of low quality rice seeds. The strain DFs185 is promising for treating rice seeds, once it stimulates seed germination and emergence.

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Microbiolização de sementes para o controle da mancha-parda e da escaldadura em arroz irrigado

Cited by 27 publications

References 13 publications

ISOLATION AND CHARACTERIZATION OF PLANT GROWTH PROMOTING BACTERIA ISOLATED FROM GARLIC (allium sativum).

ISOLATION AND CHARACTERIZATION OF PLANT GROWTH PROMOTING BACTERIA ISOLATED FROM GARLIC (allium sativum).

Effect of priming and seed-coating when associated with Bacillus subtilis in maize seeds

Physiological potential of rice seeds treated with rhizobacteria or the insecticide thiamethoxam

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