Regulation of soybean embryogenesis by abscisic acid

Abscisic Acid (ABA) stimulates growth and protein accumulation in soybean (Glycine max. L. Merr.) embryos during the early phases of embryogenesis. Growth of mid-stage embryos is suppressed by ABA, but protein accumulation is not impaired. Metabolite distribution studies indicate that ABA alters par...

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Bibliographic Details
Published in:Journal of experimental botany 1984-01, Vol.35 (152), p.403-413
Main Author: Ackerson, R.C
Format: Article
Language:English
Subjects:
ABA
Agronomy. Soil science and plant productions
Biological and medical sciences
Cell division
Cotyledons
Economic plant physiology
Embryogenesis
Embryos
Fundamental and applied biological sciences. Psychology
Germination
Glycine max
In vitro culture
Plant growth
Plant growth regulators
Plant physiology and development
Plants
RNA
Seeds
Soybean
Soybeans
Tissue cultures, protoplasts
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Summary:Abscisic Acid (ABA) stimulates growth and protein accumulation in soybean (Glycine max. L. Merr.) embryos during the early phases of embryogenesis. Growth of mid-stage embryos is suppressed by ABA, but protein accumulation is not impaired. Metabolite distribution studies indicate that ABA alters partitioning of sucrose in older embryos such that protein accumulation is sustained at the expense of lipid accumulation. The responses of in vitro cultured embryos to ABA is consistent with the normal pattern of ABA accumulation and disappearance that occurs during embryogenesis in situ. A close correlation exists between ABA levels and embryo growth rates in situ in three cultivars of soybeans. Depending on the age or stage of the developing embryo, ABA either serves to promote or inhibit embryo growth.
ISSN:0022-0957
1460-2431
DOI:10.1093/jxb/35.3.403