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Pathotypes of Melampsora rust on Salix in short‐rotation forestry plantations
Author(s) -
Ramstedt M.,
Hurtado S.,
Åström B.
Publication year - 2002
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1046/j.1365-3059.2002.00680.x
Subject(s) - willow , biology , rust (programming language) , virulence , salicaceae , botany , subdivision , spore , horticulture , woody plant , genetics , gene , computer science , programming language , history , archaeology
Melampsora epitea , the causal agent of leaf rust on willow ( Salix spp.) in short‐rotation forestry, was sampled over four consecutive years (1993–96) in Sweden. The pathotype patterns of 332 single‐spore isolates were examined for virulence characteristics using a defined set of willow hosts. Thirty‐seven pathotypes of M. epitea were identified and grouped into three formae speciales . No race or morph subdivision was observed among the isolates, other than the three formae speciales . For monitoring and studying the ecological and evolutionary dynamics of virulence for M. epitea , an internationally useful naming system for pathotypes is proposed, with a three‐digit code referring to virulence on a specified set of standard test clones.