Crown gall
A recent resurgence of galls on apple trees has sparked new interest in an old disease. By Anna Mouton. Plant galls are abnormal growths formed by cell enlargement or proliferation — or both — resulting from infections and other causes…
Crown gall research continues
A Hortgro-funded project aims to isolate the responsible pathogen and investigate whether apple-associated bacteria can help protect trees against it. By Anna Mouton. In the introduction to his 1910 monograph on crown gall in apple trees, plant pathologist George Hedgcock…