Journal
PLANT SCIENCE
Volume 163, Issue 5, Pages 987-992Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/S0168-9452(02)00272-8
Keywords
polyamines; saline stress; S-adenosylmethionine decarboxylase; transgenic rice
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S-adenosylmethionine decarboxylase (SAMDC) is a key enzyme involved in the biosynthesis of the polyamines, viz. spermidine and spermine. SAMDC cDNA from Tritordeum was introduced into the rice (Oryza sativa L.) genome using an Agrobacterium-mediated transformation method. Transgenic rice plants showed normal growth and development. DNA blot analysis confirmed stable integration of the transgene. ABA-induced SAMDC gene expression was observed in RI transgenic plants under NaCl stress, and the transgenic plants showed increased seedling growth compared to non-transgenic controls. There was a three- to fourfold increase in spermidine and spermine levels in transformed plants under the NaCl stress. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved.
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