Genome-wide variation in the pinewood nematode Bursaphelenchus xylophilus and its relationship with pathogenic traits

Table 1 Origin and ecological traits of B. xylophilus strains used in this study

Strains	Origin	Line/ Isolate	Virulence¹	Reproductive ability on fungus²	Reproductive ability on Pinus trees³
C14-5	Chiba, Japan	Isolate	+^5,6	+^5,6,7	+^5,6
OKD1-F7	OKD-1 isolate (Okayama, Japan)	Inbred line	+⁴	+⁴	+⁴
S10-P3	S10 isolate (Shimane, Japan)	Inbred line	++⁴	++++⁴	++⁴
S10-P9	S10 isolate (Shimane, Japan)	Inbred line	++++⁴	++++⁴	++++⁴
T4	Iwate, Japan	Isolate	++++⁶	++++^6,7	-
Ka4C1	Ka-4 isolate (Ibaraki, Japan)	Inbred line	++++⁵	++++⁵	++++⁵

¹Virulence is defined as degree of pathogenicity. Mortality of Pinus thunbergii seedlings: + < 25 %; ++: 25-50 % and ++++: > 75-100 %. ²Percentage increase of initial population cultured on Botrytis cinerea after 5-8 days; +: < 1.1x; ++++: > 20x initial population. ³Percentage increase of initial population in inoculated P. thunbergii seedlings after 28 days; +: < 1.1x; ++: 1.1-6x; ++++: > 20x initial population; - : no information available. Information was obtained from ⁴Shinya et al., 2012; ⁵Aikawa and Kikuchi, 2007, information for Ka4 original isolate; ⁶Mota et al., 2006; ⁷Wang et al., 2005

ISSN: 1471-2164