Life cycle of Melampsora coleosporioides, a leaf rust of Salix babylonica in Japan
2014
Abstract Melampsora coleosporioides produces uredinia and telia on the leaves of Salix babylonica . Since the life cycle of this fungus is largely unknown, inoculation experiments were conducted to find alternate host plants. Results showed that M. coleosporioides can use Corydalis incisa as a spermogonial and aecial host. The morphological characteristics of the spermogonial and aecial states of the fungus are first described. Furthermore, field observations and histological studies demonstrated that the fungus was able to overwinter in twigs of S. babylonica and produced urediniospores in early spring. Thus, the leaf rust occurs on S. babylonica every year and alternation with the spermogonial and aecial host is not necessary.
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