Common bean (Phaseolus vulgaris L.) growth promotion and biocontrol by rhizobacteria under Rhizoctonia solani suppressive and conducive soils

Martins, Stéfanny Araújo; Schurt, Daniel Augusto; Seabra, Sherlliton Sander; Martins, Samuel Júlio; Ramalho, Magno Antônio Patto; Moreira, Fátima Maria de Souza; Silva, Júlio Carlos Pereira da; Silva, Joyce Alves Goyulart da; Medeiros, Flávio Henrique Vasconcelos de

doi:10.1016/j.apsoil.2018.03.007

Cited by 25 publications

(17 citation statements)

References 44 publications

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“…Generally, the bean is regarded as an important nutritional crop in combating starvation for millions of people worldwide [ 33 , 34 ], but it is prone to diseases throughout its life cycle, especially ones that are caused by soil borne fungi [ 35 ]. Fungicide threshold chemical agents are often used to effectively protect plants from soil borne diseases, however their use is restricted due to their immensely harmful effect on the environment leading to the emergence of mutant fungal variations of pathogenic species as well as biomagnification that extends to human food products affecting their health [ 36 , 37 ].…”

Section: Resultsmentioning

confidence: 99%

Enhancing the Potentiality of Trichoderma harzianum against Pythium Pathogen of Beans Using Chamomile (Matricaria chamomilla, L.) Flower Extract

et al. 2021

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Our present study was designed to investigate the role of both Trichoderma harzianum and chamomile (Matricaria chamomilla L.) flower extract in mutual reaction against growth of Pythium ultimum. In vitro, the activity of chamomile extract was found to reduce the radial growth of Pythium ultimum up to 30% compared to the control. Whereas, the radial growth reduction effect of T. harzianum against P. ultimum reached 81.6% after 120 h. Data also showed the productivity of total phenolics and total flavonoids by T. harzianum, was 12.18 and 6.33 mg QE/100 mL culture filtrate, respectively. However, these compounds were determined in chamomile flower extract at concentrations of 75.33 and 24.29 mg QE/100 mL, respectively. The fractionation of aqueous extract of chamomile flower using HPLC provided several polyphenolic compounds such as pyrogallol, myricetin, rosemarinic acid, catechol, p-coumaric acid, benzoic acid, chlorogenic acid and other minor compounds. In vivo, the potentiality of T. harzianum with chamomile flower extract against Pythium pathogen of bean was investigated. Data obtained showed a reduction in the percentage of rotted seed and infected seedling up to 28 and 8%, respectively. Whereas, the survival increased up to 64% compared to other ones. There was also a significant promotion in growth features, total chlorophyll, carotenoids, total polyphenols and flavonoids, polyphenol-oxidase and peroxidase enzymes compared to other ones. To the best of our knowledge, there are no reported studies that included the mutual association of fungus, T. harzianum with the extract taken from the chamomile flower against P. ultimum, either in vitro or in vivo. In conclusion, the application of both T. harzianum and/or M. chamomilla extracts in the control of bean Pythium pathogen showed significant results.

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Section: Resultsmentioning

confidence: 99%

Enhancing the Potentiality of Trichoderma harzianum against Pythium Pathogen of Beans Using Chamomile (Matricaria chamomilla, L.) Flower Extract

et al. 2021

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“…2011, 2015; Martins et al. 2013, 2018, 2019). In this study, we sequenced the genome of strain UFLA258 and compared it with all genomes of closely related species.…”

Section: Introductionmentioning

confidence: 99%

Complete Genome Sequence of the Biocontrol Agent Bacillus velezensis UFLA258 and Its Comparison with Related Species: Diversity within the Commons

Silva

Ferreira

Campos

et al. 2019

Genome Biology and Evolution

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In this study, the full genome sequence of Bacillus velezensis strain UFLA258, a biological control agent of plant pathogens was obtained, assembled, and annotated. With a comparative genomics approach, in silico analyses of all complete genomes of B. velezensis and closely related species available in the database were performed. The genome of B. velezensis UFLA258 consisted of a single circular chromosome of 3.95 Mb in length, with a mean GC content of 46.69%. It contained 3,949 genes encoding proteins and 27 RNA genes. Analyses based on Average Nucleotide Identity and Digital DNA–DNA Hybridization and a phylogeny with complete sequences of the rpoB gene confirmed that 19 strains deposited in the database as Bacillus amyloliquefaciens were in fact B. velezensis. In total, 115 genomes were analyzed and taxonomically classified as follows: 105 were B. velezensis, 9 were B. amyloliquefaciens, and 1 was Bacillus siamensis. Although these species are phylogenetically close, the combined analyses of several genomic characteristics, such as the presence of biosynthetic genes encoding secondary metabolites, CRISPr/Cas arrays, Average Nucleotide Identity and Digital DNA–DNA Hybridization, and other information on the strains, including isolation source, allowed their unequivocal classification. This genomic analysis expands our knowledge about the closely related species, B. velezensis, B. amyloliquefaciens, and B. siamensis, with emphasis on their taxonomical status.

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“…Although B. amylolicefaciens UFLA285 did not reduce the impact of ramulosis with the same efficiency as the other strains, B. amylolicefaciens UFLA285 resulted in similar yield to the others (Figure 2b). Therefore, the growth promotion provided by B. amylolicefaciens UFLA285 (Figure 1b) may be enough to increase cotton yields, as previously demonstrated in other pathosystems (MARTINS et al, 2018a). Furthermore, the use of two different bacterial strains or different biocontrol agents by different application methods may results in synergistic activity due to complementation of nutrient requirement niches and mechanisms (RUANO-ROSA et al, 2014;LAREEN;BURTON;SCHÄFER, 2016).…”

Section: Figurementioning

confidence: 66%

“…Antagonistic microorganisms, such as many bacterial strains, play a key role in fungal resistance management and the replacement of chemical application, due to their broader spectrum of action. Moreover, the use of antagonistic bacteria positively affects the drought tolerance, plant growth, and yield of many agricultural crops (MARTINS et al, 2013;MARTINS et al, 2018a;MARTINS et al, 2018b). Among the bacterial agents able to be used in field conditions, many strains belong to the genus Bacillus and the use of antagonistically important Bacillus species and their commercial production has increased very rapidly in the last few years (REISS; JØRGENSE, 2017;SHAFI;TIAN;JI, 2017).…”

Section: Introductionmentioning

confidence: 99%

Bacteria for Cotton Plant Protection: Disease Control, Crop Yield and Fiber Quality1

Ferro¹,

Souza

Lelis

et al. 2020

Rev. Caatinga

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Ramulosis (Colletotrichum gossypii var. cephalosporioides) is an important fungal disease of cotton in Brazil, exclusively controlled by fungicide application. Therefore, sustainable management of ramulosis is essential. This work aimed to evaluate the potential of three bacterial strains, Bacillus amyloliquefaciens (UFLA285), Bacillus velezensis (UFLA401), and Paenibacillus lentimorbus (MEN2), for the biocontrol of ramulosis in cotton and their effects on yield and fiber quality. Seed treatment (ST), foliar spray, and soil drenching application methods were used (separately or combined) under greenhouse and field conditions. Chemical treatments recommended against ramulosis and water were used as controls. Under greenhouse conditions all strains reduced the disease incidence. While B. velezensis UFLA401 and P. lentimorbus MEN2 reduced the incidence by 56.6% and 45.7%, respectively, independent of the application method, B. amyloliquefaciens UFLA285 reduced the disease by about 60% when applied as a foliar spray or ST + foliar spray. Two field trials were performed and all bacterial strains reduced ramulosis incidence. In the first year, B. velezensis UFLA401 sprayed on the plants reduced incidence by 22.3% and ST + two foliar sprays resulted in the best performance, decreasing ramulosis by 57%. In both seasons the yield increased by using either bacterial or chemical treatments compared to the water control. The combination B. velezensis UFLA401 and P. lentimorbus MEN2 sprays provided better fiber quality than chemical treatment. Therefore, Bacillus sp. (UFLA285 and UFLA401) and P. lentimorbus MEN2 are potential tools to reduce ramulosis, increase cotton yield and fiber quality.

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Common bean (Phaseolus vulgaris L.) growth promotion and biocontrol by rhizobacteria under Rhizoctonia solani suppressive and conducive soils

Cited by 25 publications

References 44 publications

Enhancing the Potentiality of Trichoderma harzianum against Pythium Pathogen of Beans Using Chamomile (Matricaria chamomilla, L.) Flower Extract

Enhancing the Potentiality of Trichoderma harzianum against Pythium Pathogen of Beans Using Chamomile (Matricaria chamomilla, L.) Flower Extract

Complete Genome Sequence of the Biocontrol Agent Bacillus velezensis UFLA258 and Its Comparison with Related Species: Diversity within the Commons

Bacteria for Cotton Plant Protection: Disease Control, Crop Yield and Fiber Quality1

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