In vitro studies with Trichoderma spp., soil-borne fungal antagonists, demonstrated that a number of isolates produced volatile and non-volatile metabolites capable of inhibiting the growth and sporulation of several soil-borne plant pathogenic fungi. Microscopic observations showed that T. harzianm and T. viride, isolated from soil samples from Ahwaz and Karaj, adversely affected the myce...

In March 2014, a kohlrabi stem rot sample was collected from the cold storage room of Daegwallyong Horticultural Cooperative, Korea. White and fuzzy mycelial growth was observed on the stem, symptomatic of stem rot disease. The pathogen was isolated from the infected stem and cultured on potato dextrose agar for further fungal morphological observation and to confirm its pathogenicity, accordin...

• This pathogen has quarantine status in Europe • Washing and/or processing of potatoes from affected areas could contaminate GB watercourses • A new automated molecular diagnostic test means the pathogen can now be reliably detected in industrial potato washings and sewage effluents • As such, effluents from industrial potato washing can be monitored before release into the environment • The t...

Pectobacterium wasabiae, originally causing soft rot disease in horseradish in Japan, was recently found to cause blackleg-like symptoms on potato in the United States, Canada, and Europe. A draft genome sequence of a Canadian potato isolate of P. wasabiae CFIA1002 will enhance the characterization of its pathogenicity and host specificity features.

The antagonistic potential of culture filtrates of a soil isolate of T. viride was evaluated invitro, against three common post-harvest rot pathogens; A. niger, A. flavus, and F. oxysporum. Assay of three extracellular enzymes; chitinase, protease and cellulase, in respective enzyme-induced culture filtrates revealed the presence of enzyme activity. When 10% (v/v) concentration of the various l...

In Morocco, Pectobacterium carotovorum is well known as causal agents of potato soft rot. Actually, there are no efficient bactericides used to protect potato against Pectobacterium spp. biological control using antagonistic could be an interesting approach to manage this disease. Thus, a collection of thirty antagonists isolated from compost, rhizospheres and endophytes of various crop plants ...

Magainin peptides originally identified from Xenopus laevis have cytotoxic effects against a range of prokaryotic organisms without harmful effects on higher eukaryotes. The mechanism of cytotoxicity of the peptides is by disruption of membranes, which causes osmolysis. Magainin peptides are known to inhibit the in vitro growth of many phytopathogens including Erwinia carotovora, the causative ...

Ten isolates of Erwinia carotovora ssp. carotovora (Ecc) were isolated from infected potato tubers of Picasso, Sante, and Nevskiy varieties collected from different regions in Kyrgyzstan. Isolates were identified as Erwinia carotovora ssp. carotovora (Ecc) by standard bacteriological techniques and pathogenicity tests on tubers and also by PCR analyses. Tests on the pathogenicity of E. carotovo...