Thermal properties, morphology of starch granules, and crystallinity of endosperm starch in SSI and BE isozyme double mutant lines

DOI Web Site Web Site 被引用文献12件 参考文献20件 オープンアクセス
  • Abe Natsuko
    Laboratory of Plant Physiology, Department of Biological Production, Faculty of Bioresource Sciences, Akita Prefectural University
  • Nakamura Yasunori
    Laboratory of Plant Physiology, Department of Biological Production, Faculty of Bioresource Sciences, Akita Prefectural University
  • Fujita Naoko
    Laboratory of Plant Physiology, Department of Biological Production, Faculty of Bioresource Sciences, Akita Prefectural University

書誌事項

タイトル別名
  • Thermal Properties, Morphology of Starch Granules and Crystallinity of Endosperm Starch in SSI and BE Isozymes Double Mutant Lines

この論文をさがす

説明

Starch is an insoluble glucose polymer that forms semi-crystalline granules. Insight into the relationships between the physicochemical properties of starch and its structure is limited. A deeper knowledge of these relationships is necessary for understanding the starch properties of mutant lines. Starch synthase (SS) and starch branching enzyme (BE) play central roles in the biosynthesis of starch. To explore the relationships between the physicochemical properties of starch, morphology of starch granules, starch crystallinity, and the function of SS and BE isozymes expressed in rice endosperm, we analyzed these traits in starches isolated from the double mutant lines [ss1/be1 and ss1L/be2b (ss1L means leaky ss1 mutant)]. Deficiency of SSI and BEI lead to an increase and decrease in gelatinization temperature, respectively. A significant increase in gelatinization temperature results from deficiency of BEIIb, as has been shown in previous studies in rice and maize, and this phenomenon is pronounced in the reduction of SSI activity. Deficient BEIIb expression also had a significant impact on the morphology of starch granules in the endosperm and changed the A-type diffraction pattern of the granules to a B-type pattern, while deficiency of SSI and/or BEI did not affect these traits.

収録刊行物

被引用文献 (12)*注記

もっと見る

参考文献 (20)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ