Premium
PRIMARY PENETRATION PROCESS IN POWDERY MILDEWED BARLEY RELATED TO HOST CELL AGE, CELL TYPE, AND OCCURRENCE OF BASIC STAINING MATERIAL
Author(s) -
LIN M.R.,
EDWARDS H. H.
Publication year - 1974
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1974.tb04613.x
Subject(s) - penetration (warfare) , guard cell , conidium , biology , staining , botany , microbiology and biotechnology , genetics , operations research , engineering
S ummary The primary infection process of four near‐isogenic lines of Manchuria barley by Erysiphe graminis f. sp. hordei race CR‐ 3 was studied. An unknown substance,‘basic staining material’, was associated with papillae when penetration by germinated conidia was unsuccessful but not in penetrated papillae. Genes conferring resistance (ML‐a, Ml‐g, and Ml‐p) delay or reduce the frequency of penetration. The gene Ml‐k has no effect during penetration. Resistance to penetration increased significantly in both susceptible and resistant hosts with increasing cell age. The type of host epidermal cell exhibited different degrees of resistance to penetration. The cells furthest from the guard cells showed the highest degree of resistance. Guard cells were never penetrated.