Burkholderia isolates from a sand dune leaf litter display biocontrol activity against the bole rot disease of Agave sisalana

Magalhães, Valter Cruz; Barbosa, Leonardo de Oliveira; Andrade, Jackeline Pereira; Soares, Ana Cristina Fermino; Souza, Jorge Teodoro de; Marbach, Phellippe Arthur Santos

doi:10.1016/j.biocontrol.2017.06.005

Cited by 19 publications

(17 citation statements)

References 50 publications

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“…In 2008, three leaf litter samples were collected in a sandbank located at Parque Estadual Paulo Cesar Vinha, Espírito Santo State, Brazil (20° 35′ 23″ S 40° 24′ 40″ W) [10]. This region is part of the Restinga ecosystem, a Brazilian coastal biome located in the eastern part of the country.…”

Section: Isolation and Ecologymentioning

confidence: 99%

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Burkholderia perseverans sp. nov., a bacterium isolated from the Restinga ecosystem, is a producer of volatile and diffusible compounds that inhibit plant pathogens

et al. 2021

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Gram-negative, aerobic, rod-shaped, non-spore-forming, motile bacteria, designated CBAS 719 T , CBAS 732 and CBAS 720 were isolated from leaf litter samples, collected in Espírito Santo State, Brazil, in 2008. Sequences of the 16S rRNA, gyrB, lepA and recA genes showed that these strains grouped with Burkholderia plantarii LMG 9035 T , Burkholderia gladioli LMG 2216 T and Burkholderia glumae LMG 2196 T in a clade of phytopathogenic Burkholderia species. Digital DNA-DNA hybridization experiments and ANI analyses demonstrated that strain CBAS 719 T represents a novel species in this lineage that is very closely related with B. plantarii. The genome sequence of the type strain is 7.57 Mbp and its G + C content is 69.01 mol%. The absence of growth on TSA medium supplemented with 3% (w/v) NaCl, citrate assimilation, β-galactosidase (PNPG) activity, and of lipase C14 activity differentiated strain CBAS 719 T from B. plantarii LMG 9035 T , its nearest phylogenetic neighbor. Its predominant fatty acid components were C 16:0 , C 18:1 ω7c, cyclo-C 17:0 and summed feature 3 (C 16:1 ω7c and/or C 15:0 iso 2-OH). Based on these genotypic and phenotypic characteristics, the strains CBAS 719 T , CBAS 732 and CBAS 720 are classified in a novel Burkholderia species, for which the name Burkholderia perseverans sp. nov. is proposed. The type strain is CBAS 719 T (= LMG 31557 T = INN12 T ).

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Section: Isolation and Ecologymentioning

confidence: 99%

“…Burkholderia species occupy different niches and may be isolated from plants, animals, soils and leaf litter [7][8][9]. These bacteria can be pathogens to plants and animals; however, many Burkholderia species may be beneficial, acting as biological control agents and plant growth promoters [8][9][10].…”

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Burkholderia perseverans sp. nov., a bacterium isolated from the Restinga ecosystem, is a producer of volatile and diffusible compounds that inhibit plant pathogens

et al. 2021

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“…Another method investigated to manage the disease is the use of antagonistic microorganisms [53,34]. Chemical control was never investigated probably because the causal agents are soilborne fungi and farmers have little financial resources.…”

Section: Disease Managementmentioning

confidence: 99%

“…Biological control is an environmentally friendly and viable method to control plant pathogens [54,45]. Antagonistic bacteria were shown to have potential to control the bole rot disease [53,34]. Several strains of an undescribed species of Burkholderia and strains of Bacillus decreased the incidence and severity of the disease under field conditions (Figures 5 and 6) [53,34].…”

Section: Disease Managementmentioning

confidence: 99%

“…Antagonistic bacteria were shown to have potential to control the bole rot disease [53,34]. Several strains of an undescribed species of Burkholderia and strains of Bacillus decreased the incidence and severity of the disease under field conditions (Figures 5 and 6) [53,34]. Therefore, it is possible to establish programmes aimed at the development of biological products to manage the disease in the field.…”

Section: Disease Managementmentioning

confidence: 99%

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Sisal Bole Rot: An Important but Neglected Disease

Cruz-Magalhães¹,

Andrade²,

Figueiredo³

et al. 2020

Plant Diseases - Current Threats and Management Trends

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Sisal (Agave sisalana) is one of the main sources of hard natural fibre and raw materials for the industry, medicine and handicrafts. Sisal yields a coarse and strong fibre that is increasingly being used in composite materials for automobiles, furniture, construction and plastic and paper products. Extracts of sisal contain substances with anti-inflammatory, antimicrobial and anthelmintic activities. Sisal is adapted to warm environments with low rainfall and is an excellent option for cultivation in semiarid conditions, where other crops cannot be grown. The world's largest sisal producers are Brazil, Tanzania, China, Kenya and Madagascar. Sisal is a labour-intensive crop with great socio-economical importance as it is cultivated in poor areas employing familiar labour. Sisal bole rot is the main disease of sisal, responsible for substantial losses in producing countries. The disease is caused by certain species of the genus Aspergillus, especially the ones belonging in the section Nigri. The main symptoms are yellowing of the aerial parts and the red-coloured rot of the bole, which causes the plant to die. In this review we are going to address the taxonomy of the causal agents, disease diagnosis and epidemiology and disease management, with emphasis on biological control.

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The combination of two Bacillus strains suppresses Meloidogyne incognita and fungal pathogens, but does not enhance plant growth

Cruz-Magalhães

Guimarães

Silva

et al. 2021

Pest Management Science

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BACKGROUND The combination of biocontrol agents is a desirable strategy to improve control efficacy against the root‐knot nematode (RKN) Meloidogyne incognita under field conditions. However, strains compatibility is generally tested in vitro and incompatible combinations are normally not further examined in experiments in planta. Therefore, there is virtually no information on the performance of incompatible strains. In this study, we evaluated two Bacillus strains previously described as incompatible in vitro for effects on plant growth and suppression of M. incognita, pathogenic fungi and nematophagous fungi. RESULTS Strains BMH and INV were shown to be closely related to Bacillus velezensis. These strains, when applied individually, reduced the number of galls and eggs of M. incognita by more than 90% in tomato roots. When BMH and INV were combined (BMH + INV), RKN suppression and tomato shoot weight were lower compared to single‐strain applications. Additionally, metabolites in cell‐free supernatants and volatile organic compounds (VOCs) from strains BMH and INV had strong effects against the plant pathogens M. incognita, Fusarium oxysporum, Rhizoctonia solani and Sclerotium rolfsiii, but not against three species of nematophagous fungi. Although strain INV and the combination BMH + INV emitted fewer VOCs than strain BMH, they were still capable of killing second‐stage juveniles of M. incognita. CONCLUSIONS Bacillus strains BMH and INV inhibited M. incognita and fungal pathogens, and promoted tomato growth. However, strain INV emitted fewer VOCs and the combination BMH + INV did not enhance the activity of the biocontrol strains against the RKN or their capacity to promote plant growth. © 2021 Society of Chemical Industry.

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Burkholderia isolates from a sand dune leaf litter display biocontrol activity against the bole rot disease of Agave sisalana

Cited by 19 publications

References 50 publications

Burkholderia perseverans sp. nov., a bacterium isolated from the Restinga ecosystem, is a producer of volatile and diffusible compounds that inhibit plant pathogens

Burkholderia perseverans sp. nov., a bacterium isolated from the Restinga ecosystem, is a producer of volatile and diffusible compounds that inhibit plant pathogens

Sisal Bole Rot: An Important but Neglected Disease

The combination of two Bacillus strains suppresses Meloidogyne incognita and fungal pathogens, but does not enhance plant growth

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