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Cold-induced accumulation of protein in the leaves of spring and winter barley cultivars

Karimzadeh, G. and Darvishzadeh, R. and Jalali-Javaran, M. and Dehghani, H. (2005) Cold-induced accumulation of protein in the leaves of spring and winter barley cultivars. Acta Biologica Hungarica, 56 (1-2). pp. 83-96. ISSN 0236-5383

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Abstract

Electrophoretic pattern and quantitative changes in soluble proteins were determined in the leaves of spring and winter cultivars of barley (Hordeum vulgare L., cv. Makouei and cv. Reyhan, respectively) exposed to 4 °C for 14 d. Seedlings were grown in a controlled growth chamber for 2 weeks at a constant air temperature of 20 °C and then transferred to constant 4 °C for 14 d followed by returning to 20 °C (cold treatment), or they were maintained throughout at 20 °C during the experimental period of 40 d (control treatment). Plants were sampled every 48 h for leaf fresh weight measurements. Total leaf soluble proteins were extracted and their concentration was either determined by a colorimetric method, or size-fractionated on SDS-PAGE. Low temperature-induced increases in protein amount occurred over the second week of exposure to cold treatment irrespective of cultivar: the winter cultivar was 2 d prior in this response. The protein patterns and their density showed differences between-cultivars and between-temperature treatments. A new cold-induced polypeptide was recognized in the leaves of winter barley cultivar on day 22 (8 d at 4 °C) compared to the control. This polypeptide was produced earlier over the first 48 h of low temperature in the winter cultivar compared with the spring one, recognizing in the leaves of cold-treated seedling until day 26. This more rapid response to a low temperature by the winter barley cultivar indicates a more sensitive response compared with the spring barley, probably cold-shock protein is a component of this cold-induced response.

Item Type: Article
Subjects: Q Science / természettudomány > QH Natural history / természetrajz
Depositing User: xEndre xSarvay
Date Deposited: 13 Nov 2017 16:45
Last Modified: 28 Feb 2025 00:15
URI: https://real.mtak.hu/id/eprint/69936

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