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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능
대회명 대한화학회 제121회 학술발표회 및 총회
등록일 2018년 2월 1일 15시 59분 56초
접수번호 3491
발표코드 INOR.P-37 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간 4월 19일 (목요일) 11:00~12:30
발표형식 포스터
발표분야 Inorganic Chemistry
저자 및 공동저자 Yung Min Lee, Seung Jae Lee*
Department of Chemistry and Research Institute for Molecular Biology and Genetics, Chonbuk National University, Korea
제목 Proteomic studies based on the salinity stresses from halophytes
내용 Mechanistic studies of halophytes are urgent areas of agricultural research due to the increase in saline-contaminated lands and irrigated fields worldwide. The halophyte, Suaeda glauca (S. glauca), has many advantages in terms of biomass and saline elimination due to its large mass and well-developed phenotype on seashores, although its mechanistic features and growing specificities still require systematic investigation. Preliminary studies have indicated that secondary metabolites, including alkaloids, are key metabolites for achieving salt tolerance and that indole derivatives retard the inhibition of growth and development in halophytes. Metabolomic studies have validated that indole-3-carboxylic acid (ICA) and indole-3-acetic acid (IAA) accumulate in halophytes under saline conditions. In this study, S. galuca were cultivated under various saline concentrations (0 ̶ 400 mM) in Hoagland’s solution in the absence or presence of indoles to elucidate physiological features via systematic monitoring. The results confirmed that the optimal growth and development of S. glauca in 50 mM NaCl, and the morphology, such as the number of branches, shoot lengths, and fresh and dry weights, were improved by exogenous ICA treatment. The cation concentrations in roots, shoots and leaves were investigated to examine the ionic imbalance in response to saline treatment, and the results demonstrated that sodium ions accumulated to high concentrations in leaves. The levels of calcium and potassium ions in root were maintained at 50 mM NaCl, an optimal growth condition, but ICA and IAA did not regulate the ion concentrations. This study demonstrates the optimal growth conditions in saline for S. glauca and the phenotypic regulation of ICA, although the ionic imbalance was controlled by genetically programmed physiology. These results will provide valuable information for bioengineering based on the high levels of biomass in S. glauca to achieve salt tolerance in glycophytes and halophytes.
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