Abstract:
:Bacteria associated with 6 habitats of groundnut were evaluated for their broad-spectrum antifungal activity and suppression of collar rot (Aspergillus niger) of groundnut. Three hundred and ninety-three strains were tested against 8 fungal pathogens of groundnut including 5 necrotrophic fungi, Aspergillus flavus, A. niger, Rhizoctonia bataticola, Rhizoctonia solani, and Sclerotium rolfsii, and 3 biotrophic fungi, Cercospora arachidicola, Phaeoisariopsis personata, and Puccinia arachidis. Pseudomonas sp. GRS 175, Pseudomonas aeruginosa GPS 21, GSE 18, GSE 19, and GSE 30, and their cell-free culture filtrates were highly antagonistic to all the test fungi. The cell-free culture filtrates of these bacteria were fungicidal and induced mycelial deformations including hyphal bulging and vacuolization in necrotrophic fungi. The cell-free culture filtrates at 10% (v/v) concentration significantly inhibited the spore germination of biotrophic fungi. In the greenhouse, P. aeruginosa GSE 18 emerged as an effective biocontrol agent of collar rot closely followed by P. aeruginosa GSE 19. The bacterium applied as a seed treatment reduced the pre-emergence rotting and postemergence wilting by > 60%. Pseudomonas aeruginosa GSE 18 effectively colonized the groundnut rhizosphere, both in native and in A. niger infested potting mixtures. Ninety-day-old peat formulation of P. aeruginosa GSE 18 had biocontrol ability comparable with the midlog-phase cells. Pseudomonas aeruginosa GSE 18, tolerant to thiram, in combination with the fungicide had an improved collar rot control. The present study was a successful attempt in selection of broad-spectrum and fungicide tolerant biocontrol agents that can be a useful component of integrated management of collar rot.
journal_name
Can J Microbioljournal_title
Canadian journal of microbiologyauthors
Kishore GK,Pande S,Podile ARdoi
10.1139/w04-119subject
Has Abstractpub_date
2005-02-01 00:00:00pages
123-32issue
2eissn
0008-4166issn
1480-3275pii
w04-119journal_volume
51pub_type
杂志文章abstract::We modified a technique, cDNA-AFLP, for identifying differentially expressed genes in plants to work in the filamentous fungus Leptosphaeria maculans (Desmaz.) Ces. & De Not. The cDNA fragments generated by our method ranged in size from approximately 100 to 400 bps. On average, twice as many cDNA fragments were ampli...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w01-100
更新日期:2001-10-01 00:00:00
abstract::A method to obtain synchronous sporulation during idiophase development in liquid surface cultures of Rhizopus arrhizus Fischer in described and evaluated for use in studying metabolism associated with asexual sporulation. In this system growth and sporulation are effectively separated. The respiratory pattern indicat...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m77-151
更新日期:1977-08-01 00:00:00
abstract::An anaerobic consortium that carboxylated and dehydroxylated phenol to benzoate, and 2-cresol to 3-methylbenzoic acid, under methanogenic conditions was studied. Phenol induced this transformation activity. Addition of 4-hydroxypyridine or an increase in the concentration of proteose peptone to 0.5% (w/v) delayed the ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m93-093
更新日期:1993-07-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-064
更新日期:1976-03-01 00:00:00
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journal_title:Canadian journal of microbiology
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doi:10.1139/m75-303
更新日期:1975-12-01 00:00:00
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journal_title:Canadian journal of microbiology
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更新日期:2008-01-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2012-0521
更新日期:2013-07-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m81-004
更新日期:1981-01-01 00:00:00
abstract::Group B streptococcus type III is a major cause of neonatal death. The terminal sialic acid moiety of the group B streptococcus type specific capsule has been shown to be an important virulence factor. We demonstrate here that bacteria grown in human serum have increased cell surface sialic acid content compared with ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m94-016
更新日期:1994-02-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
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更新日期:2017-09-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:
更新日期:1977-03-01 00:00:00
abstract::The 40-kDa porin protein of Haemophilus influenzae type b was reconstituted into proteoliposomes. The relative rates of diffusion of small uncharged sugars across the channels formed by this protein were determined by measuring the rates of osmotic swelling of the liposomes. From these rates, a pore diameter of 1.8 nm...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m88-027
更新日期:1988-02-01 00:00:00
abstract::Antibiotic susceptibilities of 382 strains of Campylobacter jejuni isolated in Alberta, Canada, in 1980 and 1981 were determined. Although none were resistant to erythromycin or gentamicin, 5.4 and 22% of strains were resistant to ampicillin in 1980 and 1981, respectively. Tetracycline resistance was noted in 6.8% of ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m86-006
更新日期:1986-01-01 00:00:00
abstract::One of the proposed mechanisms by which rhizobacteria enhance plant growth is through the production of plant growth regulators. Five plant growth promoting rhizobacterial (PGPR) strains produced the cytokinin dihydrozeatin riboside (DHZR) in pure culture. Cytokinin production by Pseudomonas fluorescens G20-18, a rifa...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w01-029
更新日期:2001-05-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w10-054
更新日期:2010-08-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w03-004
更新日期:2003-01-01 00:00:00
abstract::Like recF and recQ mutants studied earlier, two other classes of Escherichia coli mutants defective in the RecF conjugal recombination pathway, recJ and recO, were found to be partially resistant to thymineless death. In contrast, a recN mutant, also belonging to the pathway, was indistinguishable from the wild type w...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m88-157
更新日期:1988-07-01 00:00:00
abstract::Filamentous growth of Candida albicans occurs in response to a variety of environmental signals. The C. albicans gene orf19.1944 and its allele orf19.9499 are identical and are predicted to encode an 823-residue, 7-transmembrane-domain protein that has all the expected features of a G-protein-coupled receptor. The pro...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w04-095
更新日期:2004-12-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-267
更新日期:1975-11-01 00:00:00
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journal_title:Canadian journal of microbiology
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m79-063
更新日期:1979-03-01 00:00:00
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journal_title:Canadian journal of microbiology
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doi:10.1139/cjm-2014-0630
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w04-073
更新日期:2004-10-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2018-0333
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abstract::The altitudinal distribution of microfungi associated with Betula ermanii Cham. leaf litter was investigated on Mt. Rishiri (1719 m), northern Japan. Fallen leaves were collected at five sites of different altitudes (approximately 300, 600, 900, 1200, and 1500 m above sea level) along a transect on the northern slope ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w09-030
更新日期:2009-07-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w02-056
更新日期:2002-07-01 00:00:00
abstract::The presence of other soil microorganisms might influence the ability of rhizobacterial inoculants to promote plant growth either by reducing contact between the inoculant and the plant root or by interfering with the mechanism(s) involved in rhizobacterially mediated growth promotion. We conducted the following exper...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
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更新日期:2001-09-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
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journal_title:Canadian journal of microbiology
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更新日期:2006-10-01 00:00:00
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journal_title:Canadian journal of microbiology
pub_type: 杂志文章
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更新日期:1986-01-01 00:00:00