MOBILIZATION OF STORAGE RESERVES DURING GERMINATION AND EARLY SEEDLING GROWTH OF SUGAR-BEET

被引：0
作者：
LAWRENCE, DM
HALMER, P
BOWLES, DJ
机构：
[1] UNIV LEEDS,DEPT BIOCHEM,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND
[2] GERMAINS UK LTD,KINGS LYNN PE30 4LG,ENGLAND
来源：
PHYSIOLOGIA PLANTARUM | 1990年 / 78卷 / 03期
关键词：
Amylases; Beta vulgaris; glucosidases; starch; storage proteins; sugar beet;
D O I：
10.1111/j.1399-3054.1990.tb09058.x
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
The principal storage reserve of sugar beet seeds is starch, which is localised in the perisperm. Additional storage reserves include the seed proteins, albumins, globulins and glutclins, which are exclusively located in the embryo. Soluble sugars are also detectable in all the organs of the mature seed. The time‐course of reserve mobilisation in the different organs of the sugar beet (Beta vulgaris L. cv. Regina) seed during germination and early seedling growth is documented, with particular reference to changes in (a) activities of hydrolases: a‐amylase, β‐amylase, and α‐glucosidases; (b) levels of carbohydrates and (c) proteins. Amylase activities increase substantially in both cotyledons, as well as the perisperm, whereas the increase in α‐glucosidase activities is largely confined to the perisperm. Copyright © 1990, Wiley Blackwell. All rights reserved
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页码：421 / 429
页数：9
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