Studies on antagonism betweenFusarium udum Butler and root region microflora of pigeon-pea

Upadhyay, Richa; Rai, Bharat

doi:10.1007/bf02371034

Cited by 42 publications

(21 citation statements)

References 22 publications

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“…and other actinomycetes (Sabaou et al 1983;Tu 1986;Tapio and Pohto-Lahdenperä 1991;Upadhyay and Rai 1987). For instance, Yuan and Crawford (1995) found that Streptomyces lydicus WYEC108 was capable of parasitizing Fusarium solani.…”

Section: Discussionmentioning

confidence: 98%

A promising strain of endophytic Streptomyces sp. for biological control of cucumber anthracnose

2008

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In a survey for effective biocontrol agents of Colletotrichum orbiculare, causal agent of cucumber anthracnose, 43 (MBCu series) and 135 (MBPu series) endophytic actinomycete strains were recovered from surface-sterilized organs of cucumber (Cucumis sativus) and pumpkin (Cucurbita moschata) plants, respectively. The strains were cultured with C. orbiculare on IMA-2 agar medium to determine their in vitro antagonistic ability. Eleven strains that strongly inhibited hyphal growth of the pathogen were selected as potent antagonists. Detached cotyledons of cucumber were soaked in a spore suspension of an antagonistic strain 1 day before challenge-inoculation with the pathogen, and six of these antagonists 36, 42, 45, and 56, significantly reduced the number and size of the lesions on the cotyledons compared to the untreated control. In the same way, these six strains inhibited lesion development on attached leaves of 3-weekold cucumber seedlings. Strain MBCu-56, the most suppressive of the strains, was selected for further tests. Its suppressiveness increased as concentrations increased; pretreatment of leaves with the strain at 10 7 , 10 8 and 10 9 cfu/ml suppressed disease by 72, 79 and 93%, respectively. These results strongly indicated that MBCu-56 has strong potential for controlling cucumber anthracnose. Based on the taxonomic characteristics and 16S rDNA sequence, MBCu-56 was identified as Streptomyces sp. With scanning electron microscopy, the substrate mycelia of the strain were seen to colonize the surface of leaves above the cuticle. Some hyphae also penetrated and grew underneath the cuticle.

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Section: Discussionmentioning

confidence: 98%

A promising strain of endophytic Streptomyces sp. for biological control of cucumber anthracnose

2008

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“…These dominant rhizospheric fungi were isolated by soil plate methods as described by Dhingra and Sinclair (1995) using Martin"s agar medium. The rhizospheric fungi were screened for their antagonistic potential against F. udum by the method described by Upadhyay and Rai (1987). 5mm agar block of 5 day old culture of pathogen and bio-agents were used for test as dual culture methods.…”

Section: Efficacy Of Bioagents Against Fusarium Udum In Vitromentioning

confidence: 99%

Efficacy of Plant Extracts, Bioagents and Fungicides against Fusarium udum Causing Pigeonpea Wilt

Kumar¹,

Singh²,

Yadav³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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“…only against both the pathogens (Table 3). The possible explanations for the cause of microbial antagonism have been described by Upadhyay and Rai (25) . The occurrence of inhibition zone between the soil fungi and the test pathogens could be considered as a result of the production of antibiotics, pH changes and competition for nutrients.…”

Section: Resultsmentioning

confidence: 99%

Anthracnose of betel vine and its in vitro management

Ahmed

Hossain²,

Bashar

2014

Dhaka Univ. J. Biol. Sci

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The incidence of anthracnose disease was observed lowest in December (10.87%) and highest in July (80.50%) at the three selected betel vine fields of Shalon village in Moulvibazar district. The young stems were found more prone to attack than the old ones. Pathogenicity test showed Colletotrichum dematium and C. gloeosporioides produced characteristic disease symptoms on betel stems. Among them C. dematium is a new document as a pathogen of anthracnose of betel vine. Out of five fungicides, complete inhibition of both the pathogens in vitro occurred with corozole EC (25% propiconazole), folicur EC (25% tebuconazole) and trooper WP (75% tricyclazole). Among the four antagonistic fungi, Penicillium sp. showed more antagonistic potentiality against the pathogens.

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Studies on antagonism betweenFusarium udum Butler and root region microflora of pigeon-pea

Cited by 42 publications

References 22 publications

A promising strain of endophytic Streptomyces sp. for biological control of cucumber anthracnose

A promising strain of endophytic Streptomyces sp. for biological control of cucumber anthracnose

Efficacy of Plant Extracts, Bioagents and Fungicides against Fusarium udum Causing Pigeonpea Wilt

Anthracnose of betel vine and its in vitro management

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