کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4555300 1628107 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Changes in late embryogenesis abundant proteins and a small heat shock protein during storage of beech (Fagus sylvatica L.) seeds
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Changes in late embryogenesis abundant proteins and a small heat shock protein during storage of beech (Fagus sylvatica L.) seeds
چکیده انگلیسی

Beech seed physiology, including the effect of stress proteins like late embryogenesis abundant (LEA) and small heat shock proteins (sHSP) on viability during storage, is not fully understood. Four lots of beech (Fagus sylvatica L.) seeds have been stored for 1, 4, 6 and 8 years at −10 °C and 8–9% moisture content (MC). Under these conditions, the germination capacity ranges from 81.5% to 100% in the youngest seeds. However, the seeds decrease in vigour with prolonged time of storage. Dehydrins and dehydrin-like proteins were identified both in cotyledons and embryonic axes of the dry stored seeds. In general, decreased contents of LEA proteins as well as reduced content of total soluble protein were detected during prolonged storage. The contents of soluble proteins in embryonic axes and nearly all detected dehydrins and dehydrin-like proteins were correlated with germination capacity. Moreover a sHSP with molecular mass of approximately 22 kDa was identified. The largest content of this protein was observed in the oldest seeds, especially in embryonic axes. The proteins identified may play a protective role during water deficit and storage.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental and Experimental Botany - Volume 63, Issues 1–3, May 2008, Pages 274–280
نویسندگان
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