Variation in sensitivity of Western Australian isolates of Phytophthora cinnamomi to phosphite in vitro

Authors
Wilkinson, CJ Shearer, BL Jackson, TJ Hardy, GES
Citation
Cj. Wilkinson et al., Variation in sensitivity of Western Australian isolates of Phytophthora cinnamomi to phosphite in vitro, PLANT PATH, 50(1), 2001, pp. 83-89
Citations number
20
Categorie Soggetti
Plant Sciences
Journal title
PLANT PATHOLOGY
ISSN journal
00320862 → ACNP
Volume
50
Issue
1
Year of publication
2001
Pages
83 - 89
Database
ISI
SICI code
0032-0862(200102)50:1<83:VISOWA>2.0.ZU;2-L
Abstract
Seventy-one Australian isolates of Phytophthora cinnamomi (68 from Western Australia) were tested for sensitivity to phosphite on Ribeiro's modified m edium. Isolates formed a continuum in their response to phosphite, but coul d be divided into sensitive (9% of isolates), intermediate (82%) and tolera nt (9%) groups. Sensitivity varied between isolates, with EC50 values rangi ng from 4 to 148 mug phosphite mL(-1). Phytophthora cinnamomi A1 mating-typ e isolates were at the upper end of the range of tolerance shown by the A2 mating-type isolates.