Abstract Fire blight is a devastating disease of apple, pear and quince caused by the Gram-negative bacterium Erwinia amylovora . As antibiotics are not allowed against fire in Switzerland, optimization alternative plant protection strategies required. In this context, tolerant cultivars become higher importance to control disease. A product efficacy trial with susceptible cultivar ‘Gala Galaxy...

Researchers in New Zealand have cloned and characterized a gene which, when disrupted, allows apples to develop without seeds. This highly prized trait, fully developed in only a handful of other fruits, has proved a big bonus for growers and consumers alike. What's more, in apples the phenotype might offer other potential advantages for growers of this often difficult crop. Thousands of apple ...

With its cold climate, Hokkaido grows early- to middle-maturing cultivars of apple. ‘Fuji’, a late-maturing cultivar, is the most popular apple in Japan, but it not grown Hokkaido. Warming due climate change could make suitable for growing ‘Fuji’. We estimated lower temperature limit ‘Fuji’ from annual and seasonal （April October） mean temperatures collected as mesh data orchards Hirosaki city ...

Disease and induced resistance to disease in plants and animals has been with us as long as plants, animals, and their pathogens have coevolved. Observations of induced resistance in plants were reported as early as the late 1800s and early 1900s (Beauverie, 1901; Ray, 1901; Chester, 1933). Muller and Borger (1940) described carefully conducted experiments which established the phenomenon of in...

ABSTRACT The addition of 0.1 mM FeCl(3) to a defined culture medium induces the bacterial epiphyte Pseudomonas fluorescens strain A506 (A506) to produce an antibiotic toxic to the fire blight pathogen, Erwinia amylovora. Consequently, because A506 is registered and applied as a commercial product to suppress E. amylovora before floral infection of pear and apple, the relative availability of ir...