Study Findings from North Carolina State University Broaden Understanding of Sulfur Amino Acids (Overexpression of S-adenosyl-L-methionine synthetase increased tomato tolerance to alkali stress through polyamine metabolism)
By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on Sulfur Amino Acids are presented in a new report. According to news originating from Raleigh, North Carolina, by NewsRx correspondents, research stated, "S-adenosyl-L-methionine (SAM) synthetase is the key enzyme involved in the biosynthesis of SAM, which serves as a common precursor for polyamines (PAs) and ethylene. A SAM synthetase cDNA (SlSAMS1) was introduced into the tomato genome using the Agrobacterium tumefaciens transformation method."
Our news journalists obtained a quote from the research from North Carolina State University, "Transgenic plants overexpressing SlSAMS1 exhibited a significant increase in tolerance to alkali stress and maintained nutrient balance, higher photosynthetic capacity and lower oxidative stress compared with WT lines. Both in vivo and in vitro experiments indicated that the function of SlSAMS1 mainly depended on the accumulation of Spd and Spm in the transgenic lines. A grafting experiment showed that rootstocks from SlSAMS1-overexpressing plants provided a stronger root system, increased PAs accumulation, essential elements absorption, and decreased Na+ absorption in the scions under alkali stress. As a result, fruit set and yield were significantly enhanced."
According to the news editors, the research concluded: "To our knowledge, this is the first report to provide evidence that SlSAMS1 positively regulates tomato tolerance to alkali stress and plays a major role in modulating polyamine metabolism, resulting in maintainability of nutrient and ROS balance."
For more information on this research see: Overexpression of S-adenosyl-L-methionine synthetase increased tomato tolerance to alkali stress through polyamine metabolism. Plant Biotechnology Journal, 2014;12(6):694-708. Plant Biotechnology Journal can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - www.wiley.com/; Plant Biotechnology Journal - onlinelibrary.wiley.com/journal/10.1111/(ISSN)1467-7652)
The news correspondents report that additional information may be obtained from B. Gong, North Carolina State University, Dept. of Hort Sci, Raleigh, NC 27695, United States. Additional authors for this research include X. Li, K.M. VandenLangenberg, D. Wen, S.S. Sun, M. Wei, Y. Li, F.J. Yang, Q.H. Shi and X.F. Wang (see also Sulfur Amino Acids).
Keywords for this news article include: Raleigh, Methionine, Polyamines, Synthetase, United States, North Carolina, Sulfur Amino Acids, Neutral Amino Acids, Enzymes and Coenzymes, Essential Amino Acids, North and Central America
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