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Acta Agron Sin ›› 2008, Vol. 34 ›› Issue (02): 184-191.doi: 10.3724/SP.J.1006.2008.00184

• CROP GENETICS & BREEDING · GERMPLASM RESOURCES · MOLECULAR GENETICS • Previous Articles     Next Articles

Cloning and Characterization of Maize ZmASK1, a Homologue to Shaggy/GSK-3-like Gene, Involved in Plant Responses to Abiotic Stresses

ZOU Hua-Wen12**,WU Zhong-Yi1**,ZHANG Xiu-Hai1,WANG Yong-Qin1,YANG Qing3,CAO Ming-Qing1,HUANG Cong-Lin1*   

  1. 1 Beijing Agro-Biotechnology Research Center, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097; 2 College of Agronomy, Yangtze University, Jingzhou 434023, Hubei; 3 College of Life Science, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China

  • Received:2007-06-19 Revised:1900-01-01 Online:2008-02-12 Published:2008-02-12
  • Contact: HUANG Cong-Lin

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Abstract:

Shaggy/GSK-3-like genes play important roles in plant development and stress responses. One full-length cDNA encoding a shaggy/GSK-3 homologue was isolated from maize (Zea mays L.) by RT-PCR and named as ZmASK1 (for abiotic stress-induced kinase). The predicted ZmASK1 protein has 426 amino acids with an estimated molecular mass of 48.5 kD and an isoelectric point of 8.7. RT-PCR analysis showed that the ZmASK1 expression was induced by mannitol, salt and abscisic acid (ABA). Furthermore, in different tissues the ZmASK1 showed different expression patterns and was most abundant in ovaries. These results suggest that ZmASK1 may play multiple roles in abiotic resistance pathways, as well as in plant reproductive development. This is the first shaggy/GSK-3-like gene associated with stresses and development reported in maize.

Key words: Zea mays L., Shaggy/GSK-3, Expression pattern, Abiotic stress

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