| synthesis and structure-phytotoxicity relationships of acetylenic phenols and chromene metabolites, and their analogues, from the grapevine pathogen eutypa lata. | eutypa lata, the fungus responsible for dying-arm disease in grapevines, produces a number of structurally related secondary metabolites, of which eutypine (1) has been implicated as the principal phytotoxin. however, analysis of an e. lata strain from california known to be pathogenic to grapevines showed that eutypine was not present, suggesting that other metabolites could be phytotoxic. investigation of the relative phytotoxicities of individual metabolites has been limited by insufficient m ... | 2003 | 12608846 |
| identification and characterization of eutypa leptoplaca, a new pathogen of grapevine in northern california. | although eutypa lata is the main agent of eutypa dieback of grapevine, another species of eutypa has been isolated from diseased grapevines in northern california. stromata of this recently discovered eutypa were also collected from acer macrophyllum, a. negundo, and fraxinus latifolia in the vicinity of vineyards, and appeared commonly on umbellularia californica in some mixed-evergreen forests of napa and sonoma counties. this second species of eutypa was distinguished from e. lata because of ... | 2004 | 15535070 |
| diversity of diatrypaceous fungi associated with grapevine canker diseases in california. | eutypa lata is the most common diatrypaceous fungus in grapevine cankers. this study was undertaken to determine the presence and diversity of other members of the diatrypaceae in grapevines in california. we isolated into pure culture 11 species of diatrypaceae from the wood of diseased grapevines including cryptosphaeria pullmanensis, cryptovalsa ampelina, diatrype oregonensis, d. stigma, d. whitmanensis, diatrype sp., diatrypella verrucaeformis and four putative species of eutypella. species ... | 2010 | 20361500 |
| host range, biological variation, and phylogenetic diversity of eutypa lata in california. | the objectives of this study were to investigate the host range of eutypa lata in the major grape-growing regions in california and to analyze the phenotypic variation and phylogenetic diversity of e. lata isolates. perithecia of e. lata were found on grapevines, in apricot, almond, cherry, apple, and pear tree orchards, and on ornamentals (oleander) and native plant species (california buckeye, big leaf maple, and willow). multigene phylogenies of ribosomal dna internal transcribed spacer, β-tu ... | 2010 | 20839940 |
| molecular polymorphism and phenotypic diversity in the eutypa dieback pathogen eutypa lata. | pathogen adaptation to different hosts can lead to specialization and, when coupled with reproductive isolation, genome-wide differentiation and ecological speciation. we tested the hypothesis of host specialization among california populations of eutypa lata (causal fungus of eutypa dieback of grapevine and apricot), which is reported from >90 species. genetic analyses of nine microsatellite loci in 182 isolates from three hosts (grapevine, apricot, and willow) at three locations were complemen ... | 2015 | 25084304 |