The Plant Pathology Journal

The Korean Society of Plant Pathology (한국식물병리학회)
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Altered Sulfate Metabolism of Arabidopsis Caused by Beet Severe Curly Top Virus Infection

  • Lee, Hong-Gun (Department of Genetic Engineering, Sungkyunkwan University) ;
  • Park, Sung-Hee (Department of Genetic Engineering, Sungkyunkwan University) ;
  • Kim, Dong-Giun (Center for Plant Environmental Stress Physiology, Purdue University) ;
  • Lee, Taek-Kyun (South Sea Institute, Korean Ocean Research and Development Institute) ;
  • Yum, Seung-Shic (South Sea Institute, Korean Ocean Research and Development Institute) ;
  • Auh, Chung-Kyoon (Division of Applied Biotechnology, Mokpo National University) ;
  • Lee, Suk-Chan (Department of Genetic Engineering, Sungkyunkwan University)
  • Published : 2005.12.01
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Abstract

Sulfur, an important component of plants, is regulated by a variety of stresses in sulfate assimilation and metabolism. Increase has been observed in the expression of O-acetylserine(thiol)lyase (OASTL) through two-dimensional electrophoresis with the shoot tips of Arabidopsis infected by beet severe curly top geminivirus (BSCTV). With the three- to six-fold increases in the transcript expression of OASTL, serine acetyltransferase (SAT) and $\gamma$-glutmylcysteine synthetase (GSH) were induced over the mock-inoculated organization in each organization through real-time RT-PCR analysis. The expression of those genes might affect the accumulation of anthocyanin in symptomatic tissues and the induction of abnormal callus-like structures formed by additional cell divisions as typical disease symptoms of BSCTV-infected Arabidopsis. This is the first report to describe the collaborative induction of OASTL, SAT, and GSH in virus-infected plants. The changed expressions of OASTL, SAT, and GSH in Arabidopsis infected with BSCTV raises new aspects regarding the biological function of symptomatic tissues related to sulfate metabolism.

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References

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