Acid phosphatases and seed shriveling in triticale

Seed shriveling in the man-made intergeneric hybrid, triticale (× Triticosecale Wittmack) appears to be related to increased activity of endosperm acid phosphatases including para-nitrophenyl phosphatase, ATPase, ADPase, phosphatidic phosphatase, and glucose-1-phosphatase that occur specifically at...

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Bibliographic Details
Published in:Plant physiology (Bethesda) 1984-10, Vol.76 (2), p.478-482
Main Authors: Ching, T.M, Thompson, D.M, Metzger, R.J
Format: Article
Language:English
Subjects:
ACID PHOSPHATASE
ACTIVIDAD ENZIMATICA
ACTIVITE ENZYMATIQUE
Agronomy. Soil science and plant productions
Biological and medical sciences
Economic plant physiology
Endosperm
Enzyme substrates
Enzymes
ENZYMIC ACTIVITY
Flowering
FOSFATASA ACIDA
Fructification, ripening. Postharvest physiology
Fundamental and applied biological sciences. Psychology
GRAINE
Growth and development
Metabolism
Necrosis
Nutrition. Photosynthesis. Respiration. Metabolism
PHOSPHATASE ACIDE
Phosphatases
Plant physiology and development
SEEDS
SEMILLA
SHRINKAGE
Starches
TRITICALE
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Summary:Seed shriveling in the man-made intergeneric hybrid, triticale (× Triticosecale Wittmack) appears to be related to increased activity of endosperm acid phosphatases including para-nitrophenyl phosphatase, ATPase, ADPase, phosphatidic phosphatase, and glucose-1-phosphatase that occur specifically at later stages of seed development. These hydrolases may reduce endogenous substrates for starch synthesis, deplete energy supply for maintenance and biosynthesis of tissue growth, and deassemble membrane structures resulting in a partially filled endosperm and localized necrosis. Electrophoretic isozyme patterns of endosperm acid phosphatase exhibited distinctive differences between lines producing plump and shriveled seeds indicating a divergent role of the isozymes in these two different seed conformations.
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.76.2.478