REAL

Development of endosperm cells and starch granules in common wheat

Jing, Y.P. and Liu, D.T. and Yu, X.R. and Xiong, F. and Li, D.L. and Zheng, Y.K. and Hao, Y.F. and Gu, Y.J. and Wang, Z. (2014) Development of endosperm cells and starch granules in common wheat. Cereal Research Communications, 42 (3). pp. 514-524. ISSN 0133-3720

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Abstract

The objective of the present study was to understand the developmental regularity of wheat endosperm cells at different Days After Pollination (DAP) using microscopic and histochemical methods. Resin semi-thin sections of the endosperm and the enzymatically dissociated Starchy Endosperm Cells (SECs) were observed under a light microscope. The results showed that: (1) SECs were irregular-shaped and had two types of starch granules: large oval-shaped A-type starch granules and small spherical B-type starch granules. (2) The growth shape of SECs was referred to as S-curve and the fastest cell growth period was at 16–24 DAP. (3) The largest increase and growth of A-type starch granules were mainly at 4–16 DAP. B-type starch granules increased rapidly after 16 DAP and made up over 90% of the total starch granules in SEC during the late stage of endosperm development. (4) The nuclei of SEC deformed and degenerated during the middle and late stages of endosperm development and eventually disappeared. However, starch granules still increased and grew after the cell nuclei had degenerated. The investigations showed the development regularity of starch endosperm cells and starch granules, thereby improving the understanding of wheat endosperm development.

Item Type: Article
Subjects: S Agriculture / mezőgazdaság > S1 Agriculture (General) / mezőgazdaság általában
Depositing User: Ágnes Sallai
Date Deposited: 05 Apr 2017 06:07
Last Modified: 05 Apr 2017 06:07
URI: http://real.mtak.hu/id/eprint/50949

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