Antifungal potential of Streptomyces rameus GgS 48 against mungbean root rot [Rhizoctonia bataticola (Taub.) Butler]

Meena, Lakhpat; Rajeswari, E.; Ahiladevi, P.; Kamalakannan, A.

doi:10.1007/s12038-021-00244-5

Cited by 6 publications

(6 citation statements)

References 47 publications

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“…Actinomycetes of terrestrial origin, such as Streptomyces sp., have demonstrated to reduce the mycelial growth of R. bataticola by 65.3% [ 10 ]. Similar results were obtained for Streptomyces sp.…”

Section: Antifungal In Vitro Activity Of Actinomycetes Isolated In Di...mentioning

confidence: 99%

“… Antifungal activity (% growth inhibition * ) in vitro of actinomycetes isolated from different environments [ 1 , 3 , 4 , 6 , 10 , 19 , 20 , 21 , 53 , 59 , 60 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 ]. …”

Section: Figurementioning

confidence: 99%

“… Antifungal activity (% growth inhibition * ) of actinomycetes in vivo isolated from different environments [ 1 , 4 , 10 , 21 , 25 , 29 , 59 , 60 , 63 , 69 , 70 , 71 , 73 , 74 , 77 , 78 , 80 , 83 , 85 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 ]. …”

Section: Figurementioning

confidence: 99%

“…The main antagonistic mechanisms of actinomycetes to control phytopathogenic fungi are competence for space and nutrients [ 8 ], antibiotics [ 9 ], siderophores [ 10 ], lytic enzymes [ 11 ], volatile organic compounds (VOCs) [ 12 ], and host resistance induction [ 13 ]. Additionally, actinomycetes promote plant growth and development through the synthesis of phytohormones, atmospheric nitrogen fixation, and mineral solubilization, among others [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Actinomycete Potential as Biocontrol Agent of Phytopathogenic Fungi: Mechanisms, Source, and Applications

Torres-Rodríguez¹,

Pérez

Quiñones-Aguilar³

et al. 2022

Plants

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Synthetic fungicides have been the main control of phytopathogenic fungi. However, they cause harm to humans, animals, and the environment, as well as generating resistance in phytopathogenic fungi. In the last few decades, the use of microorganisms as biocontrol agents of phytopathogenic fungi has been an alternative to synthetic fungicide application. Actinomycetes isolated from terrestrial, marine, wetland, saline, and endophyte environments have been used for phytopathogenic fungus biocontrol. At present, there is a need for searching new secondary compounds and metabolites of different isolation sources of actinomycetes; however, little information is available on those isolated from other environments as biocontrol agents in agriculture. Therefore, the objective of this review is to compare the antifungal activity and the main mechanisms of action in actinomycetes isolated from different environments and to describe recent achievements of their application in agriculture. Although actinomycetes have potential as biocontrol agents of phytopathogenic fungi, few studies of actinomycetes are available of those from marine, saline, and wetland environments, which have equal or greater potential as biocontrol agents than isolates of actinomycetes from terrestrial environments.

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Section: Antifungal In Vitro Activity Of Actinomycetes Isolated In Di...mentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Actinomycete Potential as Biocontrol Agent of Phytopathogenic Fungi: Mechanisms, Source, and Applications

Torres-Rodríguez¹,

Pérez

Quiñones-Aguilar³

et al. 2022

Plants

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“…S. coacervatus isolated from the intestinal tract of Armadillidium vulgare was reported the antifungal activities on Aspergillus niger IFM 5368, and Candida albicans ATCC 90028 (Shibazaki et al, 2011). Meena et al, (2022) found the antifungal potential of S. rameus GgS 48 against mungbean root rot caused by colonization of Rhizoctonia bataticola. Al_husnan, and Alkahtani (2016) found the antibacterial, and antifungal potentials of S. griseoruber onto bacterial and fungal pathogens, including Staphylococcus aureus, Bacillus cereus, and Candida albicans.…”

Section: Discussionmentioning

confidence: 99%

The antibacterial activity and silk dyeing of the crude pigment extract from J4 actinobacteria strain

Urtgam,

Sumpradit,

Thurnkul

2023

JCST

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Actinobacteria represent a vast variety of prokaryotic microbes that produce a diverse group of secondary metabolites used in medical, agricultural, and industrial applications. The objectives in this study were to investigate the antibacterial activities and potential for silk dyeing of the crude extract from the actinobacterial strain J4. Initially, the antibacterial activities of the crude pigment extracts obtained from the actinobacterial strain J4 isolated from the wasp’s nest were determined. To extract the water-insoluble pigments used for antibacterial activity testing via the agar well diffusion method, ethyl acetate was applied during the pigment extraction. These extracts showed an inhibitory effect against Salmonella Typhimurium TISTR1472, Bacillus subtilis PSRU-01, and Enterococcus faecalis TISTR459. Secondly, evaluation of silk dyeing was carried out. We used the extractant as 70 % (v/v) ethanol in the alternative extraction process when the strain J4 was cultivated by solid-state fermentation with broken-milled rice to prepare actinobacterial dye for silk dyeing. The pigment extract obtained was tested for color stability based on washing methods, and the sensitivity to light was determined according to ISO105-C06:2010(E) and ISO 105-B02:2014(E), respectively. The color stability and sensitivity of the pigment extract to washing showed scores between 3-5, and the sensitivity to light demonstrated scores between 3-4. Taxonomically, the strain J4 was dark-violet colonies, and its water-soluble pigment diffused on sodium caseinate agar (SCA). To identify the strain J4, the phylogenetic identification based on partial sequencing of 16S rDNA was applied. The identification result indicated that the strain J4 was closely related to Streptomyces coacervatus (99.8% sequence similarity). In future, antibacterial activities of the crude extracts obtained from actinobacteria strain J4 should be tested with other food-borne pathogens. The development of Streptomyces dyes should also focus on the stability of the dyes during the silk dyeing process.

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Mechanistic insights into the role of actinobacteria as potential biocontrol candidates against fungal phytopathogens

2023

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Worldwide mounting demand for better food production to nurture exasperating population emphasizes on reduced crop losses. The incidence of pathogens into the agricultural fields has tend to dwindle plethora of cereal, vegetable, and other fodder crops. This, in turn, has seriously impacted the economic losses on global scale. Apart from this, it is quite challenging to feed the posterity in the coming decades. To counteract this problem, various agrochemicals have been commercialized in the market that no doubt shows positive results but along with adversely affecting the ecosystem. Therefore, the excessive ill‐fated use of agrochemicals to combat the plant pests and diseases highlights that alternatives to chemical pesticides are need of the hour. In recent days, management of plant diseases using plant‐beneficial microbes is gaining interest as safer and potent alternatives to replace chemically based pesticides. Among these beneficial microbes, actinobacteria especially streptomycetes play considerable role in combating plant diseases along with promoting the plant growth and development along with their productivity and yield. The mechanisms exhibited by actinobacteria include antibiosis (antimicrobial compounds and hydrolytic enzymes), mycoparasitism, nutrient competition, and induction of resistance in plants. Thus, in cognizance with potential of actinobacteria as potent biocontrol agents, this review summarizes role of actinobacteria and the multifarious mechanisms exhibited by actinobacteria for commercial applications.

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Antifungal potential of Streptomyces rameus GgS 48 against mungbean root rot [Rhizoctonia bataticola (Taub.) Butler]

Cited by 6 publications

References 47 publications

Actinomycete Potential as Biocontrol Agent of Phytopathogenic Fungi: Mechanisms, Source, and Applications

Actinomycete Potential as Biocontrol Agent of Phytopathogenic Fungi: Mechanisms, Source, and Applications

The antibacterial activity and silk dyeing of the crude pigment extract from J4 actinobacteria strain

Mechanistic insights into the role of actinobacteria as potential biocontrol candidates against fungal phytopathogens

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