Phytoprotection (2019) 99, 1-11

Abdelali Et-Touil, Mathieu Dusabenyagasani, Guillaume F. Bouvet, Clive M. Brasier and Louis Bernier (2019)
Ophiostoma ulmi DNA naturally introgressed into an isolate of Ophiostoma novo-ulmi is clustered around pathogenicity and mating type loci
Phytoprotection 99 (1), 1-11
Abstract: The invasive fungal pathogens Ophiostoma ulmi and O. novo-ulmi have caused two successive pandemics of Dutch elm disease since the beginning of the 20^th century. In nature, the highly aggressive O. novo-ulmi may hybridize with the less aggressive O. ulmi. Growth rate and molecular analyses were conducted on an unusual, moderately aggressive O. novo-ulmi isolate, AST27, carrying an introgressed pathogenicity gene, Pat1-m; on highly aggressive O. novo-ulmi isolate H327; on O. ulmi isolates Q412T and W9; and on progeny from laboratory crosses between H327 and AST27. Genetic analysis indicated that the Pat1 and Mat1 (mating type) loci were in different linkage groups corresponding to O. novo-ulmi H327 chromosomes 1 and 2, respectively. Most of the molecular differences between the nuclear genomes of H327 and AST27 occurred in the vicinity of Pat1 and Mat1. In addition, two putative quanti-tative trait loci, Mgr1 and Mgr2, which influence mycelial growth rate at 21°C and 28°C, the optima for O. novo-ulmi and O. ulmi, were linked to Mat1 and Pat1, respectively. (Full text free for older issues.)
(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): Clive M. Brasier, Louis Bernier

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

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Ophiostoma ulmi
	Ophiostoma novo-ulmi