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JXB Advance Access originally published online on March 12, 2004
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Journal of Experimental Botany, Vol. 55, No. 399, pp. 1153-1155, May 1, 2004
© 2004 Oxford University Press

GENE NOTE

Molecular cloning of low-temperature-inducible ribosomal proteins from soybean

Received 17 November 2003; Accepted 2 February 2004

Kee-Young Kim1, Seong-Whan Park1, Young-Soo Chung1, Chung-Han Chung1, Jung-In Kim2 and Jai-Heon Lee1,*

1 Department of Plant Biotechnology, Dong-A University, Busan, 604-714, South Korea
2 School of Food and Life Science, Biohealth Products Research Centre, Inje University, Gimhae 621-749, South Korea

* To whom correspondence should be addressed. Fax: +82–51–200–6536. E-mail: jhnlee{at}donga.ac.kr

Three ribosomal protein genes induced by low-temperature treatment were isolated from soybean. GmRPS13 (742 bp) encodes a 17.1 kDa protein which has 95% identity with the 40S ribosomal protein S13 of Panax ginseng (AB043974). GmRPS6 (925 bp) encodes a 28.1 kDa protein which has 94% identity with the 40S ribosomal protein S6 of Asparagus officinalis (AJ277533). GmRPL37 (494 bp) encodes a 10.7 kDa protein which has 85% identity with the 60S ribosomal protein L37 of Arabidopsis thaliana (AF370216). The expression of these ribosomal protein genes started to increase 3 d after low-temperature treatment, whereas the cold-stress protein src1 was highly induced from the first day. Such late response of these ribosomal protein genes may be due to secondary signals during cold adaptation. The induction of ribosomal protein genes might enhance the translation process or help proper ribosome functioning under low-temperature conditions.

Key words: Ribosomal gene, soybean, suppression subtractive hybridization.


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