Current Microbiology (2014) 68, 769-776

Yang Hu, Qingqing Dai, Yangyang Liu, Zhe Yang, Na Song, Xiaoning Gao, Ralf Thomas Voegele, Zhensheng Kang and Lili Huang (2014)
Agrobacterium tumefaciens-mediated transformation of the causative agent of valsa canker of apple tree Valsa mali var. mali
Current Microbiology 68 (6), 769-776
Abstract: Valsa mali var. mali (Vmm), which is the causative agent of Valsa canker of apple tree, causes heavy damage to apple production in eastern Asia. In this article, we report Agrobacterium tumefaciens-mediated transformation (ATMT) of Vmm and expression of gfp (green fluorescent protein) in this fungus. The transformation system was optimized to a transformation efficiency of approximately 150 transformants/10⁶ conidia, and a library containing over 4,000 transformants was generated. The tested transformants were mitotically stable. One hundred percent hph (hygromycin B phosphotransferase) integration into Vmm was identified by PCR and five single-copy integration of T-DNA was detected in the eighteen transformants by Southern blot. To our knowledge, this is the first report of ATMT of Vmm. Furthermore, this library has been used to identify genes involved in the virulence of the pathogen, and the transformation system may also be useful to the transformation of other species of the genus Valsa.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Zhen Sheng Kang, Ralf T. Voegele

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cytospora mali	Apple (Malus)	Japan
	Cytospora mali	Apple (Malus)	Korea-South