In:
Physiologia Plantarum, Wiley, Vol. 80, No. 4 ( 1990-12), p. 598-604
Abstract:
Sunflower seeds ( Helianthus annuus L. cv Rodeo) slowly lose their viability when subjected to accelerated aging (42°C and 100% relative humidity). After 12 h imbibition, in vivo protein labelling profiles show dramatic changes as a function of accelerated aging. Total and poly(A+)‐RNA content of embryonic axes were similar regardless of the time spent in hot and wet conditions. However, the ability of mRNA to be translated in cell‐free system was largely reduced in acceleratedly aged seeds. In vitro protein synthesis revealed the observed changes to be largely quantitative rather than qualitative, and to result mainly from post‐transcriptional regulation. However, the induction of two proteins (15 and 43 kDa) subsequent to accelerated aging resulted from an increase in their corresponding mRNA, The accelerated aging treatment of sunflower seeds primarily induces quantitative changes in the translation of pre‐existing mRNA, rather than the production of new mRNA species.
Type of Medium:
Online Resource
ISSN:
0031-9317
,
1399-3054
DOI:
10.1111/ppl.1990.80.issue-4
DOI:
10.1111/j.1399-3054.1990.tb05684.x
Language:
English
Publisher:
Wiley
Publication Date:
1990
detail.hit.zdb_id:
208872-1
detail.hit.zdb_id:
2020837-6
SSG:
12
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