Agroactive Compounds of Microbial Origin

Tanaka, Y

doi:10.1146/annurev.micro.47.1.57

Cited by 30 publications

(42 citation statements)

References 35 publications

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“…Microbial secondary metabolites have potential merits as fungicides for plant disease control. These compounds show both chemical and biological diversity, and are thus likely to exhibit unique modes of action that differ from those of currently employed antifungal agents (Porter ; Tanaka and Omura ; Berdy ). In addition, microbial metabolites typically degrade within a few days to a month, permitting low residual levels in the field environment.…”

Section: Introductionmentioning

confidence: 99%

Antifungal activity of rimocidin and a new rimocidin derivative BU16 produced by Streptomyces mauvecolor BU16 and their effects on pepper anthracnose

et al. 2016

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Section: Introductionmentioning

confidence: 99%

Antifungal activity of rimocidin and a new rimocidin derivative BU16 produced by Streptomyces mauvecolor BU16 and their effects on pepper anthracnose

et al. 2016

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“…Associations between actinomycetes and underground plant organs could be deleterious or beneficial for the plants. While some actinomycetes secrete herbicidal compounds (39) or cause diseases such as pox and common scab (22), others can symbiotically fix atmospheric nitrogen (4) or protect roots against fungal infections (44).…”

mentioning

confidence: 99%

Glucanolytic Actinomycetes Antagonistic to Phytophthora fragariae var. rubi, the Causal Agent of Raspberry Root Rot

Valois¹,

Fayad²,

Barasubiye³

et al. 1996

Appl Environ Microbiol

137

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A collection of about 200 actinomycete strains was screened for the ability to grow on fragmented Phytophthora mycelium and to produce metabolites that inhibit Phytophthora growth. Thirteen strains were selected, and all produced ␤-1,3-, ␤-1,4-, and ␤-1,6-glucanases. These enzymes could hydrolyze glucans from Phytophthora cell walls and cause lysis of Phytophthora cells. These enzymes also degraded other glucan substrates, such as cellulose, laminarin, pustulan, and yeast cell walls. Eleven strains significantly reduced the root rot index when inoculated on raspberry plantlets.

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“…Actinomycetes have been and remained the most fruitful source of microorganisms for all types of bioactive metabolite (Doumbou et al, 2001). About 60% of the new insecticides and herbicides reported in the past 5 year originate from Streptomyces (Tanaka and Omura, 1993).…”

Section: Discussionmentioning

confidence: 99%

Isolation of Endophytic Actinomycetes From Leaves of Tomato Plants and Their Activities Against Bacterial Speck Disease

2017

AJAS

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The biological control agents of endophytic actinomycetes was investigated to determine whether control of bacterial speck of tomato, caused by Pseudomonas syringae pv. tomato (Pst). From natural infected tomato leaves showing bacterial speck disease symptoms, six isolates of Pst (Pst1, Pst2, Pst 3, Pst4, Pst5, and Pst DC3000) were isolated, it proved to be pathogenic and able to infect tomato plants under greenhouse condition, causing speck disease symptoms. From the eighty eight isolates of endophytic actinomycetes recovered from healthy tomato leaves plants, nine isolates were selected and tested for their potential inhibition against bacterial tomato speck disease in vitro and in vivo. According to16SrDNA analysis the isolates TR-24 and TR-26 of isolated actinomyces proved to be Streptomyces glaucescens. While the isolates TR-20, TR-32 and TR-34 were identified as Streptomyces graminisoli and isolates TR-25 identified as Streptomyces flavovirens as well as isolates TR-33 and TR-35 were identified as Streptomyces scabies. Finally isolate TR-36 was identified as Streptomyces roseochromogenus. Application of nine isolates of Streptomyces by spraying or drenching methods, all Streptomyces isolates were able to reduce disease severity of bacterial speck compared to infected control. Minutely, the spore suspensions of TR-24 and TR-26 isolates gave the highest reduction of the disease severity. However, the lowest reduction was achieved by isolate TR-35 compared with other Streptomyces isolates.

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Agroactive Compounds of Microbial Origin

Cited by 30 publications

References 35 publications

Antifungal activity of rimocidin and a new rimocidin derivative BU16 produced by Streptomyces mauvecolor BU16 and their effects on pepper anthracnose

Antifungal activity of rimocidin and a new rimocidin derivative BU16 produced by Streptomyces mauvecolor BU16 and their effects on pepper anthracnose

Glucanolytic Actinomycetes Antagonistic to Phytophthora fragariae var. rubi, the Causal Agent of Raspberry Root Rot

Isolation of Endophytic Actinomycetes From Leaves of Tomato Plants and Their Activities Against Bacterial Speck Disease

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