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Genetische Beziehungen zwischen genetisch verschiedenen Formen von Melampsora larici‐epitea und verwandten Arten auf der Basis von AFLP Daten
Author(s) -
Samils B.,
Lagercrantz U.,
Gullberg U.
Publication year - 2002
Publication title -
forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 1437-4781
DOI - 10.1046/j.1439-0329.2002.00298.x
Subject(s) - salix viminalis , biology , amplified fragment length polymorphism , botany , genetic distance , salicaceae , willow , genetics , woody plant , genetic variation , gene , genetic diversity , population , demography , sociology
Summary Amplified Fragment Length Polymorphism (AFLP) was used to study genetic relationship among leaf rust fungi ( Melampsora spp.) occurring on Salix species in short‐rotation coppice. Special interest was paid to a newly identified rust fungus found on S. viminalis in southern Sweden, morphologically similar to M. larici‐epitea but with a distinct DNA profile. Genetic distances among 40 Melampsora isolates collected from S. viminalis , S. dasyclados , S. viminalis x dasyclados , S. daphnoides , S. acutifolia and M. larici‐populina were calculated based on 101 AFLP markers. Neighbour‐joining analysis revealed the presence of six clusters, which corresponded exactly to predefined groups, namely three formae speciales of M. larici‐epitea , a stem‐infecting form of Melampsora on S. viminalis , the newly identified Melampsora on S. viminalis and a group consisting of two isolates from the poplar rust M. larici‐populina . All six clusters were well supported by bootstrap analysis (84 to 100% support). The newly identified Melampsora on S. viminalis was indicated to be genetically separated from M. larici‐epitea as well as from the stem‐infecting form of Melampsora .