| identification of molecular genetic markers tightly linked to downy mildew resistant genes in grape. | bulk segregant analysis (bsa), randomly amplified polymorphic dna (rapd) and sequence characterized amplified region (scar) methods were used to tag the downy mildew-resistant genes of grape with molecular markers. parents and their 60 individuals of an f1 progeny resulting from a cross 88-110 between 83-4-96 (vitis quinquangularis, downy mildew-resistant) and muscat rose (v. vinifera, downy mildew-susceptible), three f2 progenies resulting from three crosses of self-cross and inter-cross of 88- ... | 2001 | 11209717 |
| expression of the grape vqsts21 gene in arabidopsis confers resistance to osmotic stress and biotrophic pathogens but not botrytis cinerea. | stilbene synthase (sts) is a key gene in the biosynthesis of various stilbenoids, including resveratrol and its derivative glucosides (such as piceid), that has been shown to contribute to disease resistance in plants. however, the mechanism behind such a role has yet to be elucidated. furthermore, the function of sts genes in osmotic stress tolerance remains unclear. as such, we sought to elucidate the role of sts genes in the defense against biotic and abiotic stress in the model plant arabido ... | 2016 | 27695466 |
| ectopic expression of the wild grape wrky transcription factor vqwrky52 in arabidopsis thaliana enhances resistance to the biotrophic pathogen powdery mildew but not to the necrotrophic pathogen botrytis cinerea. | wrky transcription factors are known to play important roles in plant responses to biotic stresses. we previously showed that the expression of the wrky gene, vqwrky52, from chinese wild vitis quinquangularis was strongly induced 24 h post inoculation with powdery mildew. in this study, we analyzed the expression levels of vqwrky52 following treatment with the defense related hormones salicylic acid (sa) and methyl jasmonate, revealing that vqwrky52 was strongly induced by sa but not ja. we char ... | 2017 | 28197166 |
| vqduf642, a gene isolated from the chinese grape vitis quinquangularis, is involved in berry development and pathogen resistance. | the duf642 gene vqduf642 , isolated from the chinese grape species v. quinquangularis accession danfeng-2, participates in berry development and defense responses against erysiphe necator and botrytis cinerea. the proteins with domains of unknown function 642 (duf642) comprise a large protein family according to cell wall proteomic analyses in plants. however, the works about functional characterization of duf642s in plant development and resistance to pathogens are scarce. in this study, a gene ... | 2016 | 27424038 |
| ectopic expression of a grape aspartic protease gene, ap13, in arabidopsis thaliana improves resistance to powdery mildew but increases susceptibility to botrytis cinerea. | the grape aspartic protease gene, ap13 was previously reported to be responsive, in chinese wild vitis quinquangularis cv. 'shang-24', to infection by erysiphe necator, the causal agent of powdery mildew disease, as well as to treatment with salicylic acid in v. labrusca×v. vinifera cv. 'kyoho'. in the current study, we evaluated the expression levels of ap13 in 'shang-24' in response to salicylic acid (sa), methyl jasmonate (meja) and ethylene (et) treatments, as well as to infection by the nec ... | 2016 | 27181943 |
| alternaria sp. mg1, a resveratrol-producing fungus: isolation, identification, and optimal cultivation conditions for resveratrol production. | due to its potential in preventing or slowing the occurrence of many diseases, resveratrol (3,5,4'-trihydroxystilbene) has attracted great research interest. the objective of this study was to identify microorganisms from selected plants that produce resveratrol and to optimize the conditions for resveratrol production. endophytes from merlot wine grapes (vitis vinifera l. cv. merlot), wild vitis (vitis quinquangularis rehd.), and japanese knotweed (polygonum cuspidatum siebold & zucc.) were iso ... | 2012 | 22526800 |