| mass spectrometry of alternaria mali toxins and related cyclodepsipeptides. | the structures of am-toxins i, ii and iii, host specific phytotoxic metabolites of alternaria mali, can be readily deduced from low and high resolution mass spectral data, since the amino acids and their sequences are demonstrated by this technique. additionally, the general fragmentation of these compounds by electron impact is discussed by comparing the spectra of analogous synthetic compounds. | 1977 | 560889 |
| sensitivity distribution of phytopathogenic bacteria and fungi to antibiotics. | the minimal inhibitory concentrations (mic) of various antibiotics and fungicides for erwinia carotovora, pseudomonas coronafaciens var. atropurpurea, p. lachrymans, alternaria mali, a. kikuchiana, pyricularia oryzae, botrytis sp. and sclerotinia sp. isolated from diseased plants in various localities of japan were examined to enable the isolates to be gruoped into sensitive and resistant strains. to minimize the effects of various variable conditions, mic of isolates were pooled for either 2 or ... | 1976 | 1033174 |
| influence of fungicides on mycotoxin production by alternaria mali. | | 1973 | 4199668 |
| apparent induction of mutants and enhancement of conidial formation by fungicides in alternaria mali. | | 1973 | 4738121 |
| studies on the toxicity of alternaria mali. | | 1970 | 4919385 |
| purification and antifungal activity of a basic 34 kda beta-1,3-glucanase from soybean hypocotyls inoculated with phytophthora sojae f. sp. glycines. | inoculation of soybean (glycine max l. cv. jangyup) hypocotyls with phytophthora sojae f. sp. glycines results in a marked accumulation of some pathogenesis-related (pr) proteins. a basic beta-1,3-glucanase (34 kda) was purified from soybean hypocotyls infected by an incompatible race of p. sojae f. sp. glycines using cm-cellulose cation exchange chromatography and bio-gel p-60 gel filtration. the purified soybean beta-1,3-glucanase cross-reacted with polyclonal antibody raised against a tomato ... | 1997 | 9264030 |
| 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 |
| inhibition of phytopathogenic fungi by essential oil, hydrosol, ground material and extract of summer savory (satureja hortensis l.) growing wild in turkey. | the antifungal activities of the essential oil, hydrosol, ground material and extract of summer savory (satureja hortensis l.) on mycelial growth of alternaria mali roberts and botrytis cinerea pers. were determined. all doses of extract inhibited 100% the mycelial growth of both fungi, and exhibited a fungicidal effect. the 15% level of hydrosol and the 1.0% level of ground material had a 100% effect on b. cinerea. the other doses showed weak inhibition on mycelial growth of the fungi, and anti ... | 2006 | 16330123 |
| application of plackett-burman experimental design and doehlert design to evaluate nutritional requirements for xylanase production by alternaria mali nd-16. | the objective of this study was to use statistically based experimental designs for the optimization of xylanase production from alternaria mali nd-16. ten components in the medium were screened for nutritional requirements. three nutritional components, including nh(4)cl, urea, and mgso(4), were identified to significantly affect the xylanase production by using the plackett-burman experimental design. these three major components were subsequently optimized using the doehlert experimental desi ... | 2007 | 17846761 |
| biological evaluation of neopeptins isolated from a streptomyces strain. | microbial secondary metabolites are a rich source of antifungal agents and have merit as alternatives to synthetic fungicides. to develop disease control agents against powdery mildew, the lipopeptide antibiotic neopeptins were identified from the culture broth of a streptomyces sp., and in vivo control efficacy of the compounds was evaluated on cucumber plants under glasshouse conditions. | 2007 | 17912683 |
| antifungal effects of volatile compounds from black zira (bunium persicum) and other spices and herbs. | the dish pack method, which measures growth inhibition or promotion effects of volatile compounds on germinating seeds, was applied to measure the antifungal effects of 52 dried samples of spices and herbs against a soil-borne phytopathogenic fungus, fusarium oxysporum. black zira showed the strongest effect, followed by cumin and cardamom. headspace sampling and gas chromatography-mass spectrometry analysis of black zira identified seven volatile compounds, gamma-terpinene, limonene, p-cymene, ... | 2007 | 17932718 |
| isolation and identification of a newly isolated alternaria sp. nd-16 and characterization of xylanase. | alternaria sp. nd-16, a bacterium isolated from soil sample, was identified as a strain of alternaria mali based on the morphology and comparison of internal transcribed spacer rdna gene sequence studies. furthermore, it is demonstrated that this strain has xylanase activity, and the activity can be optimized under suitable growing conditions where wheat bran and urea are the primary sources of carbon and nitrogen. partially purified xylanase from alternaria sp. nd-16 is shown to have an optimal ... | 2009 | 18597051 |
| disease control effect of strevertenes produced by streptomyces psammoticus against tomato fusarium wilt. | during screening of microorganisms producing antifungal metabolites, streptomyces psammoticus strain kp1404 was isolated. the culture extract of this strain showed potent disease control efficacy against fusarium wilt on tomato plants. the antifungal metabolites st-1 and st-2 were isolated from the culture extract using a variety of chromatographic procedures. on the basis of ms and nmr spectrometric analysis, the structures of the antifungal active compounds st-1 and st-2 were determined to be ... | 2011 | 21314121 |
| identification and biocontrol efficacy of streptomyces miharaensis producing filipin iii against fusarium wilt. | a number of bacterial strains were isolated from the internal tissue of trapa japonica. of these, strain kpe62302h, which had a 16s rdna sequence identical to that of streptomyces miharaensis showed antifungal activity against several plant pathogens. treatment of seeds with strain kpe62302h induced a significant reduction in the incidence of fusarium wilt in tomato plants compared with untreated controls. an antifungal substance (fp-1) was purified from the culture extract of strain kpe62302h u ... | 2011 | 22460913 |