Antibiotics are essential for control of bacterial diseases of plants, especially fire blight of pear and apple and bacterial spot of peach. Streptomycin is used in several countries; the use of oxytetracycline, oxolinic acid and gentamicin is limited to only a few countries. Springtime antibiotic sprays suppress pathogen growth on flowers and leaf surfaces before infection; after infection, an...

Mutants of Erwinia amylovora CFBP 1430 lacking a functional high-affinity iron transport system mediated by desferrioxamine are impaired in their ability to initiate fire blight symptoms (A. Dellagi, M.-N. Brisset, J.-P. Paulin, and D. Expert. Mol. Plant-Microbe Interact. 11:734-742, 1998). In this study, a chromosomal transcriptional lacZ fusion was used to analyze the expression in planta of ...

Abstract Background Fire Blight, incited by Erwinia amylovora , is one of the most damaging pear and apple diseases in world. blight was introduced to Egypt 1960 threatens Egypt’s costs for industry. Currently, Phage therapy considered be secured biological method controlling plant bacterial diseases. This investigation aimed isolate identify molecularly bacteria causing fire bright disease. As...

Interval mapping of quantitative trait loci (QTL) for resistance to late blight, height, and maturity was performed on a tetraploid full-sib family of potato comprising 227 clones from a cross between a susceptible parent, 12601ab1, and a resistant cultivar, Stirling, which were of similar height and main crop maturity. Thirty-eight AFLP primer combinations provided 585 informative markers, and...

The Pederson et al. (2014) letter deals ostensibly with their opinion that we (Nowacki & Abrams, 2014) failed to consider the lessening of drought after the 1930s as a major driver of post-European forest dynamics in the eastern U.S. We are befuddled by this because our paper includes long-term precipitation data for four study regions and we report a slight increase (2–8% change) from 1895 to ...