Biological evaluation of neopeptins isolated from a Streptomyces strain

Kim, Yun Sung; Kim, Hyeong Min; Chang, Cheol; Hwang, In Cheon; Oh, Hyuncheol; Ahn, Jong Seog; Kim, Ki Deok; Hwang, Byung Kook; Kim, Beom Seok

doi:10.1002/ps.1450

Cited by 31 publications

(15 citation statements)

References 29 publications

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“…The cyclic lipopeptides Neope ptin A and B were isolatedfrom the culture broth of fro m g ram-positive actinobacteria Streptomyces sp. KNF2047 [88](See Figure 2B). Neopeptin A and B demonstrated inhibitory activities against mycelial growth of B. cinerea and other pathogenic fungi.…”

Section: Biosurfac Tants LI Pope Pti Des and Li Pi D Relate D Anti mentioning

confidence: 99%

Emerging Approaches to Inhibit Botrytis cinerea

McFeeters¹,

McFeeters²

2013

IJMB

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Botrytis cinerea is a pathogenic fungus that has tremendous adverse impact on agriculture around the world. With susceptibility fro m seed to storage, highly adaptive nature under selective pressure, and ability to thrive at lower temperatures, B. cinerea is a formidable challenge. Technological advances in genetics, biochemistry, and biotechnology are providing new and unparalleled possibilities fo r treat ment and management. With the resulting outburst of novel antifungal agents, it is difficult to keep abreast. This review not only catalogs and summarizes recent antifungal discoveries that target B. cinerea, but tries to give the reader a feel for how expansive the new possibilit ies are. Due to practical limitation, this review focuses on antifungal peptides/proteins and antifungal natural products. A brief perspective on emerging antifungals that hold potential to significantly impact the botryticide landscape is also included.

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Section: Biosurfac Tants LI Pope Pti Des and Li Pi D Relate D Anti mentioning

confidence: 99%

Emerging Approaches to Inhibit Botrytis cinerea

McFeeters¹,

McFeeters²

2013

IJMB

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“…This has been paralleled with an increase in the consumption of organic food and farming and has, accordingly, brought about a greater interest in the search for and development of natural and bioactive products for disease control (Mekki et al 2006a). Current research shows that natural antagonism of microorganisms against some plant pathogens has been extensively investigated for biological control and a number of fungal and bacterial species have proved effective against grey mould (Li et al 2004;Kim et al 2007). Similarly, some compounds as essential oils synthesized by plants have also been used as agricultural chemicals for the control of a range of important plant diseases (Arras and Usai 2001;Bouchra et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Potential use of hydroxytyrosol-rich extract from olive mill wastewater as a biological fungicide against Botrytis cinerea in tomato

et al. 2010

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Olive mill wastewater (OMW) is a rich source of antifungal agents and has a merit as alternative to synthetic fungicides. To develop disease control agents against Botrytis cinerea, a hydroxytyrosol-rich (29.27% weight:dry weight) olive mill wastewater (HROMW) and a hydroxytyrosol-rich (52.67% weight:dry weight) extract (HRE) were prepared from fresh OMW using hydrolysis and posthydrolysis purification processes. The HROMW and HRE showed strong fungicidal activity against B. cinerea with minimal fungicidal concentrations (MFCs) of 14.36-28.72 and 28.72-57.44 mg l -1 (dry weight), respectively. According to EN 1275: 1997 standard method, HROMW and HRE at 1.25% (dry weight:volume) showed powerful disinfectant properties resulting in a reduction in the viability of B. cinerea spores by [4 log units after 30 min of contact time. The HROMW or HRE foliar spray treatments, of the B. cinerea inoculated tomato plants, resulted in disease control percentage of 95 and 91%, respectively, whereas 70% was conferred by benomyl treatment. Although, HRE possessed a similar disease severity reduction than HROMW, it showed great advantage by fortifying plants and by improving their growth and healthy aspect. Indeed, HRE-treated plants showed significantly better: (i) plant height (146.2 and 130.5%), (ii) average stem diameter (135% and 110%), (iii) leaf number (163.6 and 128.5%), and (iv) leaf colour (chlorophyll a content) (144.4 and 103%) than benomyl-treated and non-treated plants, respectively. This study revealed that HRE offers a natural and effective extract to control grey mould.

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“…Aeromicrobium as a potential disease suppression indicator [21,22] and a member of phylum Actinobacteria. Moreover, the antibiotics produced by Actinobacteria are able to suppress various plant diseases [23,24]. Disease-suppressive natural soils, with reference to a variety of agricultural crop diseases, have been reported for wheat Take-all and Rhizoctonia bare patch diseases [25],…”

Section: Soil Microbial Community Composition and Diversitymentioning

confidence: 99%

Silicon application and related changes in soil bacterial community dynamics reduced ginseng black spot incidence in Panax ginseng in a short-term study

Li¹,

Wang

Liu

et al. 2019

Preprint

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Background This study analyzed the effect of silicon (Si) application on the occurrence of ginseng black spot caused by Alternaria panax . We explored the differences in soil physical and chemical factors and microbial community structure following Si application as well as the key factors that affected the occurrence of ginseng black spot in soil. Potted Panax ginseng plants were used to assess the effect of Si treatment on ginseng black spot. Soil physical and chemical properties were comprehensively analyzed. Bacterial communities were analyzed using Illumina HiSeq sequencing targeting the 16S rRNA gene. Results After inoculation with A. panax , the morbidity (and morbidity index) of ginseng with and without Si was 52% (46) and 83% (77), respectively. Soil physical and chemical analysis showed that under the ginseng black spot inoculation, bacterial communities were mainly affected by pH and available potassium, followed by ammonium nitrogen and available Si. NMDS and PLS-DA analyses and the heat maps of relative abundance revealed that Si application elevated the resistance of ginseng black spot as regulated by the abundance and diversity of bacterial flora in rhizosphere soils. Heatmap analysis at the genus level revealed that A. panax + Si inoculations significantly increased the soil community abundance of Sandaracinus , Polycyclovorans , Hirschia , Haliangium , Nitrospira , Saccharothrix , Aeromicrobium , Luteimonas , and Rubellimicrobium and led to a bacterial community structure with relative abundances that were significantly similar to that of untreated soil. Conclusions Short-term Si application also significantly regulated the structural impact on soil microorganisms caused by ginseng black spot. Our findings indicated that Si applications may possibly be used in the prevention and treatment of ginseng black spot.

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Biological evaluation of neopeptins isolated from a Streptomyces strain

Abstract: Neopeptin mixtures isolated from Streptomyces sp. KNF2047 showed potent disease control activity against powdery mildew development on cucumber plants. .

Cited by 31 publications

References 29 publications

Emerging Approaches to Inhibit <i>Botrytis cinerea</i>

Emerging Approaches to Inhibit <i>Botrytis cinerea</i>

Potential use of hydroxytyrosol-rich extract from olive mill wastewater as a biological fungicide against Botrytis cinerea in tomato

Silicon application and related changes in soil bacterial community dynamics reduced ginseng black spot incidence in Panax ginseng in a short-term study

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