Dihydroisocoumarins produced by Diaporthe cf. heveae LGMF1631 inhibiting citrus pathogens

Emerging citrus diseases in Europe caused by species of Diaporthe

Species of Diaporthe are considered important plant pathogens, saprobes, and endophytes on a wide range of plant hosts. Several species are well-known on citrus, either as agents of pre- or post-harvest infections, such as dieback, melanose and stem-end rot on fruit. In this study we explored the occurrence, diversity and pathogenicity of Diaporthe species associated with Citrus and allied gene...

Emended classification of xanthomonad pathogens on citrus.

Species limits in Diaporthe: molecular re-assessment of D. citri, D. cytosporella, D. foeniculina and D. rudis

Species of Diaporthe are important plant pathogens of a wide range of hosts worldwide. In the present study the species causing melanose and stem end rot diseases of Citrus spp. are revised. Three species of Diaporthe occurring on Citrus are characterised, including D. citri, D. cytosporella and D. foeniculina. Morphology and phylogenetic analyses of the complete nuclear ribosomal internal tran...

beta-Galactosidase-inhibiting new isoflavonoids produced by actinomycetes.

Six isoflavonoids having beta-galactosidase inhibiting activity were isolated from the culture filtrate of Streptomyces xanthophaeus. Their structures were determined by spectral analyses to be daidzein, daidzein 7-alpha-L-rhamnoside, daidzein 4',7-di-alpha-L-rhamnoside, genistein, genistein 7-alpha-L-rhamnoside and genistein 4',7-di-alpha-L-rhamnoside.

Ebelactones inhibit cutinases produced by fungal plant pathogens.

co-hydroxyfatty acids1}. Most plant pathogenic fungi invade their hosts by breaching the intact plant surface, and the cuticle including the polymeric cutin comprises the first barrier to be penetrated. For several host-pathogen interactions it has been demonstrated that cutin-hydrolyzing enzymes excreted by the invading pathogen are a crucial requirement for the penetration of plant cuticles2>...