Studies on Starch Synthesis in Maize Mutants
نویسندگان
چکیده
منابع مشابه
Starch Synthesis in the Maize Endosperm1
This review covers starch synthesis in the maize endosperm. Starch comprises one of the major glucose polymers in many living organisms. It is critical for plant life since it provides a mechanism to store the vast amounts of fixed carbon arising from photosynthesis. As the major component of many seeds, starch provides the important source of energy transferred from parent to progeny. Animal l...
متن کاملInfluence of Gene Dosage on Carbohydrate Synthesis and Enzymatic Activities in Endosperm of Starch-Deficient Mutants of Maize.
In cereals, starch is synthesized in endosperm cells, which have a ploidy level of three. By studying the allelic dosage of mutants affecting starch formation in maize (Zea mays L.) kernels, we determined the effect of down-regulated enzyme activity on starch accumulation and the activity of associated enzymes of carbohydrate metabolism. We found a direct relationship between the amount of star...
متن کاملProteome and phosphoproteome analysis of starch granule-associated proteins from normal maize and mutants affected in starch biosynthesis
In addition to the exclusively granule-bound starch synthase GBSSI, starch granules also bind significant proportions of other starch biosynthetic enzymes, particularly starch synthases (SS) SSI and SSIIa, and starch branching enzyme (BE) BEIIb. Whether this association is a functional aspect of starch biosynthesis, or results from non-specific entrapment during amylopectin crystallization, is ...
متن کاملEffect of increased temperature in apical regions of maize ears on starch-synthesis enzymes and accumulation of sugars and starch.
Apical florets of maize (Zea mays L.) ears differentiate later than basal florets and form kernels which have lower dry matter accumulation rates. The purpose of this study was to determine whether increasing the temperature of apical kernels during the dry matter accumulation period would alter the difference in growth rate between apical and basal kernels. Apical regions of field-grown maize ...
متن کاملProperties of Citrate-stimulated Starch Synthesis Catalyzed by Starch Synthase I of Developing Maize Kernels.
Chromatography of extracts of maize on diethylaminoethyl-cellulose resolves starch synthase activity into two fractions (Ozbun, Hawker, Preiss 1971 Plant Physiol 48: 785-769). Only starch synthase I is capable of synthesis in the absence of added primer and the presence of 0.5 molar citrate. This enzyme fraction has been purified about 1,000-fold from maize kernels homozygous for the endosperm ...
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ژورنال
عنوان ژورنال: Journal of the Technological Society of Starch
سال: 1969
ISSN: 0416-9662,1884-4871
DOI: 10.5458/jag1953.17.99