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DIFFERENTIAL EFFECTS OF OZONE AND SULPHUR DIOXIDE ON THE FINE STRUCTURE OF SPINACH LEAF CELLS
Author(s) -
MIYAKE HIROSHI,
FURUKAWA AKIO,
TOTOSUKA TSUMUGU,
MAEDA EIZO
Publication year - 1984
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.1469-8137.1984.tb03558.x
Subject(s) - spinacia , chloroplast , spinach , swelling , thylakoid , fumigation , biophysics , chemistry , endoplasmic reticulum , stroma , botany , biology , biochemistry , horticulture , materials science , immunohistochemistry , immunology , composite material , gene
S ummary Spinach ( Spinacia oleracea L. cv, New Asia) plants were continuously fumigated with 0.5 μ11 −2 O 3 and 1.0 μ11 −1 SO 2 singly or in combination. The leaf tissues were examined by electron microscopy at various intervals until they were necrosed. The first indication of O 3 injury was swelling of thylakoids in the chloroplasts, which was followed by swelling of Golgi bodies, endoplasmic reticulum and nuclear envelopes. The internal space of the mitochondrial cristae was reduced. Later the chloroplasts were deformed. Sulphur dioxide injury first appeared as swelling of the stroma and deformation of the chloroplasts. Swelling of thylakoids appeared later. After both treatments the ceils ultimately collapsed and their contents were aggregated. When O 3 and SO 2 were supplied simultaneously, the appearance and development of injury were markedly accelerated compared with either of the single fumigations. The cells mainly showed the features of SO 2 injury following simultaneous fumigation.