Caracterização de solos de pernambuco quanto à supressividade a Pectobacterium carotovorum subsp. carotovorum

Alvarado, Indira del C.M.; Michereff, Sami Jorge; Mariano, R. L. R.; Silva, Adriano Márcio Freire; Nascimento, Clístenes Williams Araújo do

doi:10.1590/s0100-41582007000300006

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…The high endospore-forming bacterial community in cotton soils is a possible indicator of their potential in the higher suppressiveness to bacterial blight. Alvarado et al, 23 found that the endospore-forming bacterial community in the soil was the only soil attributes that significantly positively correlated with the suppressiveness and negatively with conduciveness of tropical soils to Pectobacterium carotovorum subsp. carotovorum.…”

Section: Resultsmentioning

confidence: 99%

Screening of Endospore-Forming Bacteria for Cotton Seed Treatment against Bacterial Blight and Damping-off

damping-off¹

2015

APAR

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Under conventional seed treatment, reports of efficacy loss or activity on non-target microorganisms foster the search for sustainable disease management alternatives. Biological seed treatment has been meeting these requirements and exerts benefits that go beyond plant health. Looking for those alternatives, 368 Endospore-forming bacterial strains were screened for the control of bacterial blight and damping-off, caused by Xanhomonas axonopodis pv. malvacearum and Colletotrichum gossypii var. cephalosporioides, respectively. From the sampled sites, the strains with the highest bacterial blight and damping-off control were obtained from Primavera do Leste and Campo Verde (MT), respectively. Those had the potential to control both diseases were obtained from Primavera do Leste. Consistent disease control with seed treatment was found with two strains: Bacillus subtilis UFLA285 and Paenibacillus lentimorbus MEN2 with disease symptoms reduced by 45 and 56%, respectively for damping-off and 26 and 76%, respectively for bacterial blight. Therefore beneficial bacteria are a plausible alternative for a sustainable disease control.

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Section: Resultsmentioning

confidence: 99%

Screening of Endospore-Forming Bacteria for Cotton Seed Treatment against Bacterial Blight and Damping-off

damping-off¹

2015

APAR

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Survival of Ralstonia solanacearum in infected tissues of Capsicum annuum and in soils of the state of Pernambuco, Brazil

et al. 2011

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The survival of Ralstonia solanacearum A1-9 Rif race 1 phylotype I was studied in ten different soil types in the absence of the host plant as well as in infected tissues of the stem and root of bell peppers buried in the soil at 0, 5, and 15 cm. The survival time of R. solanacearum A1-9 Rif in the ten soil types ranged from 42 up to 77 days. Among the chemical and physical characteristics of the soil, clay content, residual moisture, and available water were positively correlated, and pH was negatively correlated, with survival time, population size at 42 days, and area under the population curve. The pathogen survival differed significantly in relation to the plant tissues, but not with respect to the incorporation depth of the infected tissues. The root tissue of bell pepper supported a larger bacterial population at 7 and 21 days (5 × 10 4 and 3.

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Antagonismo direto e biocontrole da podridão-mole-do-tomateiro pelo uso de procariotas

Barra

Silva

Garcia

et al. 2009

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar procariotas quanto ao potencial de antagonismo direto para o biocontrole da podridão-mole-do-tomateiro (Pectobacterium carotovorum subsp. carotovorum). Avaliaram-se 45 isolados bacterianos pelo teste de antibiose contra o patógeno. Foram feitos dois ensaios em que sementes de tomate (Lycopersicon esculentum Mill.) cv. Santa Clara foram infectadas com isolados antagônicos. As mudas foram transplantadas para solos infestados com suspensões de propágulos P. carotovorum com OD 540 de 0,45 e 0,65. Os antagonistas UFV-0005, UFV-043, UFV-BF112 e UFV-0006 foram eficientes em proteger plantas de tomateiro contra a podridão-mole.Termos para indexação: Lycopersicon esculentum, Pectobacterium carotovorum subsp. carotovorum, antibiose, controle biológico, rizobactérias. Direct antagonism and biocontrol of tomato soft rot using prokaryotesAbstract -This work aimed to evaluate prokaryotes to provide direct antagonism and biocontrol of tomato soft rot (Pectobacterium carotovorum subsp. carotovorum). Forty-five bacterial isolates previously selected for biological control of several tomato (Lycopersicon esculentum Mill.) diseases were evaluated using an antibiosis test. 'Santa Clara' tomato seeds were inoculated with potential antagonist isolates and transplanted to a soil infested with the pathogen, in two asseys, at a propagule concentration of OD 540 0.45 and 0.65. Antagonists UFV-0005, UFV-043, UFV-BF112, and UFV-0006 protected tomato plants against soft rot disease.

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Caracterização de solos de pernambuco quanto à supressividade a Pectobacterium carotovorum subsp. carotovorum

Cited by 3 publications

References 16 publications

Screening of Endospore-Forming Bacteria for Cotton Seed Treatment against Bacterial Blight and Damping-off

Screening of Endospore-Forming Bacteria for Cotton Seed Treatment against Bacterial Blight and Damping-off

Survival of Ralstonia solanacearum in infected tissues of Capsicum annuum and in soils of the state of Pernambuco, Brazil

Antagonismo direto e biocontrole da podridão-mole-do-tomateiro pelo uso de procariotas

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