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A BASIC STAINING MATERIAL ASSOCIATED WITH THE PENETRATION PROCESS IN RESISTANT AND SUSCEPTIBLE POWDERY MILDEWED BARLEY
Author(s) -
EDWARDS H. H.
Publication year - 1970
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.1469-8137.1970.tb02429.x
Subject(s) - powdery mildew , hordeum vulgare , biology , erysiphe graminis , staining , host specificity , host (biology) , penetration (warfare) , botany , major duodenal papilla , microbiology and biotechnology , genetics , anatomy , poaceae , operations research , engineering
S ummary A possible mechanism for resistance has been observed in powdery mildewed barley ( Erysiphe graminis f. sp. hordei on Hordeum vulgare ). A substance which stains with basic protein staining procedures occurs in papillae of susceptible and resistant powdery mildew infected barley. It is first detectable after the infection peg penetrates the host cell wall. In susceptible host cells this substance is confined to the papilla, whereas in resistant host cells this substance spreads throughout the penetrated cell and to adjacent mesophyll cells beneath the infected cell. The spread of this substance correlates with the expression of resistance in the host cells.