| sti35, a stress-responsive gene in fusarium spp. | a stress-induced mrna was identified in the phytopathogenic fungus fusarium oxysporum f. sp. cucumerinum. treatment of the fungus with ethanol resulted in the induction of a major mrna species encoding a protein of approximate mr 37,000. a full-length cdna clone of the induced message was obtained. rna blot analysis indicated that the mrna was induced by various other stresses, including treatment with copper(ii) chloride and heat (37 degrees c). however, it was not greatly induced by treatment ... | 1990 | 2376567 |
| a novel enzyme immunoassay for conidia of fusarium oxysporum f.sp. cucumerinum f504. | this study was undertaken to develop a new tool to study fusarial diseases of plants. micro- and macro-conidia of a strain (f504) of fusarium oxysporum were isolated and antiserum against the conidia was elicited in rabbits. a highly specific and sensitive competitive-type enzyme-linked immunosorbent assay (elisa) for conidia of the strain was developed using the antiserum with beta-d-galactosidase-labeled anti-rabbit igg as the secondary antibody and conidia fragments of the strain as antigen a ... | 1989 | 2511393 |
| identification of f. o. cucumerinum and f. o. luffae by rapd-generated dna probes. | to create a fast, sensitive and specific method for identifying fusarium oxysporum f. sp. cucumerinum and f. o. luffae. | 2001 | 11696104 |
| suppression of meloidogyne javanica by antagonistic and plant growth-promoting rhizobacteria. | four rhizobacteria selected out of over 500 isolates from rhizosphere of the vegetables in china were further studied for suppression of the root-knot nematode and soil-borne fungal pathogens in laboratory and greenhouse in belgium. they were identified as brevibacillus brevis or bacillus subtilis by biolog test and partial 16s rdna sequence comparison. they not only inhibited the radial growth of the root-infecting fungi rhizoctonia solani sx-6, pythium aphanidermatum zjp-1 and fusarium oxyspor ... | 2005 | 15909333 |
| [allelopathy of garlic root exudates]. | by the method of water culture, the root exudates of cangshan garlic and caijiapo garlic were collected to study their allelopathic effects on the seed germination and seedling growth of lettuce, and on the development of pathogens fusarium oxysporum f. sp. cucumerinum and f. oxysporium f. sp. niveum. the root exudates of the two garlic cultivars promoted the lettuce seed germination and seedling growth at low concentrations (0.1 and 0.2 g x ml(-1)), but showed inhibitory effects at high concent ... | 2011 | 21812318 |
| synthesis, structure and biological activity of novel 1,2,4-triazole mannich bases containing a substituted benzylpiperazine moiety. | a series of novel mannich bases with trifluoromethyl-1,2,4-triazole and substituted benzylpiperazine moieties were synthesized. their structures were confirmed by ir, (1) h nmr and elemental analysis. the single crystal structure of compound 4r was also determined. the preliminary bioassays showed that most of the lead compounds had low herbicidal activity against brassica campestris, echinochloa crusgalli, and kari enzyme. however, most of them exhibited significant fungicidal activity at the d ... | 2011 | 21521489 |
| [screening, identification, and biocontrol effect of antagonistic bacteria against phytophthora capsici]. | a total of 98 isolates with antagonistic activity against phytophthora capsici were isolated from the rhizosphere soil of healthy pepper plants in the fields seriously infected by pepper phytophthora capsicit, and two strains named as hl-3 and lz-8 were screened, which had the characteristics of wide-spectrum antagonism and good growth under poor soil condition. the hl-3 and lz-8 were identified as paenibacillus polymyxa and bacillus pumilus, respectively, based on their morphological and bioche ... | 2010 | 21328956 |
| biological control of fusarium wilt of cucumber by chitinolytic bacteria. | abstract two chitinolytic bacterial strains, paenibacillus sp. 300 and streptomyces sp. 385, suppressed fusarium wilt of cucumber (cucumis sativus) caused by fusarium oxysporum f. sp. cucumerinum in nonsterile, soilless potting medium. a mixture of the two strains in a ratio of 1:1 or 4:1 gave significantly (p < 0.05) better control of the disease than each of the strains used individually or than mixtures in other ratios. several formulations were tested, and a zeolite-based, chitosan-amended f ... | 1999 | 18944809 |
| [effects of wheat and soybean stubbles on soil microbial ecological characteristics in cucumber field]. | the study with traditional dilution plate method and biolog eco system indicated that under wheat and soybean stubbles, the amounts of soil fungi, bacteria and actinomyces in cucumber field increased, while that of fusarium oxysporum f. sp. cucumerinum decreased (p <0.05). the shannon-wiener index, evenness index, simpson index, and mcintosh index of soil microbial communities as well as soil microbial biomass c increased (p <0.05), basal respiration and metabolic quotient qco2 decreased (p <0.0 ... | 2008 | 18593040 |
| isolation and partial characterization of bacillus subtilis me488 for suppression of soilborne pathogens of cucumber and pepper. | environmentally friendly control measures are needed for suppression of soilborne pathogens of vegetable crops in the republic of korea. in vitro challenge assays were used to screen approximately 500 bacterial isolates from 20 korean greenhouse soils for inhibition of diverse plant pathogens. one isolate, bacillus subtilis me488, suppressed the growth of 39 of 42 plant pathogens tested. isolate me488 also suppressed the disease caused by fusarium oxysporum f. sp. cucumerinum on cucumber and phy ... | 2008 | 18542950 |
| clavatol and patulin formation as the antagonistic principle of aspergillus clavatonanicus, an endophytic fungus of taxus mairei. | many endophytic fungi are known to protect plants from plant pathogens, but the antagonistic mechanism has rarely been revealed. in this study, we wished to learn whether an endophytic aspergillus sp., isolated from taxus mairei, would indeed produce bioactive components, and if so whether (a) they would antagonize plant pathogenic fungi; and (b) whether this aspergillus sp. would produce the compound also under conditions of confrontation with these fungi. the endophytic fungal strain from t. m ... | 2008 | 18317751 |
| a robust identification and detection assay to discriminate the cucumber pathogens fusarium oxysporum f. sp. cucumerinum and f. sp. radicis-cucumerinum. | the fungal species fusarium oxysporum is a ubiquitous inhabitant of soils worldwide that includes pathogenic as well as non-pathogenic or even beneficial strains. pathogenic strains are characterized by a high degree of host specificity and strains that infect the same host range are organized in so-called formae speciales. strains for which no host plant has been identified are believed to be non-pathogenic strains. therefore, identification below the species level is highly desired. however, t ... | 2007 | 17686014 |
| influence of plant root exudates, germ tube orientation and passive conidia transport on biological control of fusarium wilt by strains of nonpathogenic fusarium oxysporum. | in earlier studies, biological control of fusarium wilt of cucumber induced by fusarium oxysporum f. sp. cucumerinum was demonstrated using nonpathogenic strains c5 and c14 of fusarium oxysporum. strain c14 induced resistance and competed for infection sites whether roots were wounded or intact, whereas strain c5 required wounds to achieve biocontrol. in the current work, additional attributes involved in enhanced resistance by nonpathogenic biocontrol agents strains to fusarium wilt of cucumber ... | 2006 | 16482390 |
| [ecological effects of multifunctional micro-flora agent in environment]. | in this paper, strains zjy-1 (brevibacillus brevis) and zjy-116 (bacillus subtilis) with evident inhibitory effect on fusarium oxysporum f. sp. cucumerinum and with promotion effect on plant growth were screened from cucumber rhizosphere, and the feasibility of exerting the ecological effects of multifunctional micro-flora agent was studied by treating cucumber seeds with the two strains singly or mixed with chlorpyrifos-degrading strain dsp3 (alcaligenes faecali). the results showed that the tw ... | 2005 | 16422513 |
| fusarium wilt suppression and agglutinability of pseudomonas putida. | mutants of pseudomonas putida (agg) that lack the ability to agglutinate with components present in washes of bean and cucumber roots showed limited potential to protect cucumber plants against fusarium oxysporum f. sp. cucumerinum. however, a higher level of protection was observed against fusarium wilt in cucumber plants coinoculated with the parental bacterium (agg), which was agglutinable. the agg mutants did not colonize the roots of cucumber plants as extensively as the agg parental isolat ... | 1988 | 16347713 |
| [population fluctuation of main pathogens and their antagonistic bacteria in cucumber rhizosphere]. | the investigation on the population fluctuation of main pathogens pythium spp. and fusarium oxysporum f. cucumerinum in the rhizosphere of four cucumber varieties showed that there was a significant difference in population number of pathogens for different cucumber varieties and for different growth stages of the same variety, which was in accordance with the regular disease incidence pattern. the population number of pythium spp. was significantly higher at cucumber creeping stage than at its ... | 2005 | 16110670 |
| diversity of antifungal actinomycetes in various vegetative soils of korea. | diversity of actinomycetes and their antifungal activities against some plant pathogenic fungi were examined in various vegetative soils from 14 different sites in the western part of korea. actinomycete counts ranged from 1.17 x 10(6) to 4.20 x 10(6) cfu x g(-1) dried soil. a total of 1510 actinomycetes were isolated from the soil samples. streptomyces was predominant in soils with a ph range of 5.1-6.5, 9.1-13.0% moisture, and 9.1-11.0% organic matter. most micromonospora, dactylosporangium, a ... | 2002 | 12109880 |
| arbuscular mycorrhizal fungus-promoted accumulation of two new triterpenoids in cucumber roots. | cucumber (cucumis sativus l.) roots were analyzed by hplc and tlc for their levels of secondary metabolites upon inoculation with the arbuscular mycorrhizal fungus, glomus caledonium. three compounds in etoac extracts from the mycorrhizal roots showed significant increases six weeks after inoculation. these compounds were isolated by column chromatography and determined to be two novel triterpenes, 2beta-hydroxybryonolic acid (2beta,3beta-dihydroxy-d:c-friedoolean-8-en-29-oic acid) and 3beta-bry ... | 2002 | 12036048 |