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FINE STRUCTURE OF CHLOROPLASTS IN “GREEN ISLANDS” AND IN SURROUNDING CHLOROTIC AREAS OF BARLEY LEAVES INFECTED BY POWDERY MILDEW
Author(s) -
Camp R. R.,
Whittingham W. F.
Publication year - 1975
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1975.tb14063.x
Subject(s) - chloroplast , biology , powdery mildew , botany , fragmentation (computing) , lamellar structure , degeneration (medical) , pathology , chemistry , biochemistry , ecology , gene , medicine , crystallography
The fine structure of mesophyll chloroplasts in green islands and in adjacent chlorotic areas of barley leaves infected with Erysiphe graminis (DC.) was compared with healthy non‐inoculated tissue. Chloroplasts in green islands were persistent. Green‐island chloroplast grana were enlarged and fewer in number than in healthy tissue. In contrast, cells in chlorotic areas had fewer chloroplasts and their lamellae showed progressive degeneration and fragmentation. The lamellae often resembled aberrant prolamellar bodies. As lamellar degeneration progressed there was a marked increase in the amount of osmophilic material within the chloroplasts.