Formation and Developmental Characteristics of A- and B-Type Starch Granules in Wheat Endosperm

doi:10.1016/S1671-2927(00)8518

Journal of Integrative Agriculture ›› 2012, Vol. 12 ›› Issue (1): 73-81.DOI: 10.1016/S1671-2927(00)8518

Formation and Developmental Characteristics of A- and B-Type Starch Granules in Wheat Endosperm

YIN Yong-an, QI Jun-cang, LI Wei-hua, CAO Lian-pu , WANG Zi-bu

1.Key Oasis Eco-Agriculture Laboratory of Xinjiang Production and Construction Group/Agricultural Faculty, Shihezi University, Shihezi 832003, P.R.China

收稿日期:2010-12-18 出版日期:2012-01-01 发布日期:2012-01-13
通讯作者: Correspondence QI Jun-cang, Mobile: 18997731130, Fax: +86-993-2057660, E-mail: qjc_agr@shzu.edu.cn
作者简介:YIN Yong-an, E-mail: yinyongan1983@163.com
基金资助:
This work was supported by the National Natural Science Foundation of China (30860145).

Formation and Developmental Characteristics of A- and B-Type Starch Granules in Wheat Endosperm

YIN Yong-an, QI Jun-cang, LI Wei-hua, CAO Lian-pu , WANG Zi-bu

1.Key Oasis Eco-Agriculture Laboratory of Xinjiang Production and Construction Group/Agricultural Faculty, Shihezi University, Shihezi 832003, P.R.China

Received:2010-12-18 Online:2012-01-01 Published:2012-01-13
Contact: Correspondence QI Jun-cang, Mobile: 18997731130, Fax: +86-993-2057660, E-mail: qjc_agr@shzu.edu.cn
About author:YIN Yong-an, E-mail: yinyongan1983@163.com
Supported by:
This work was supported by the National Natural Science Foundation of China (30860145).

摘要/Abstract

摘要： Wheat grain natural transverse sections of 12 periods were observed and analyzed using scanning electron micrographs technology and Bio-Quant system IV image analyzer in order to detect the developing process of A- and B-type starch granules. In addition, the chemical composition and starch granule-bound proteins (SGPs) of A- and B-type starch granules were tested and analyzed. The results showed that A-type starch granules in wheat began from 3 d post anthesis (DPA) till grain maturing and B-type starch granules occured after 15 DPA till grain maturing. Approximately 98.5% of chemical compositions in both A- and B-type starch granules were amylose and amylopectin, and more than half of which were amylopectin. The amylopectin contents, average chain length, and chain length distribution (degree of polymerization> 40) of amylopectin in A-type starch granules were significant higher than that of B-type starch granules. SGP-145, SGP- 140, and SGP-26 kD were associated with A-type starch formation in wheat grain.

关键词: wheat (Triticum aestivum L.), A- and B-type starch granules, formation and developmental characteristics

Abstract: Wheat grain natural transverse sections of 12 periods were observed and analyzed using scanning electron micrographs technology and Bio-Quant system IV image analyzer in order to detect the developing process of A- and B-type starch granules. In addition, the chemical composition and starch granule-bound proteins (SGPs) of A- and B-type starch granules were tested and analyzed. The results showed that A-type starch granules in wheat began from 3 d post anthesis (DPA) till grain maturing and B-type starch granules occured after 15 DPA till grain maturing. Approximately 98.5% of chemical compositions in both A- and B-type starch granules were amylose and amylopectin, and more than half of which were amylopectin. The amylopectin contents, average chain length, and chain length distribution (degree of polymerization> 40) of amylopectin in A-type starch granules were significant higher than that of B-type starch granules. SGP-145, SGP- 140, and SGP-26 kD were associated with A-type starch formation in wheat grain.

Key words: wheat (Triticum aestivum L.), A- and B-type starch granules, formation and developmental characteristics

YIN Yong-an, QI Jun-cang, LI Wei-hua, CAO Lian-pu , WANG Zi-bu. Formation and Developmental Characteristics of A- and B-Type Starch Granules in Wheat Endosperm[J]. Journal of Integrative Agriculture, 2012, 12(1): 73-81.

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Formation and Developmental Characteristics of A- and B-Type Starch Granules in Wheat Endosperm

Formation and Developmental Characteristics of A- and B-Type Starch Granules in Wheat Endosperm

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