염 스트레스가 근대(Beta vulgaris var. cicla L.)의 무기이온 및 glycine betaine 함량에 미치는 영향
분야
자연과학 > 지질
저자
최성철 ( Sung Chul Choi ) , 김종국 ( Jong Guk Kim ) , 추연식 ( Yeon Sik Choo )
발행기관
한국하천호수학회(구 한국육수학회)
간행물정보
생태와 환경 2013년, 제46권 제3호, 388~394페이지(총7페이지)
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08802014.pdf [무료 PDF 뷰어 다운로드]
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    Growth, inorganic solutes and glycine betaine accumulation in spinach beet (Beta vulgaris var. cicla L.) were studied under different salt conditions. Plants of fortythree days old were assessed by growing for a further 10 and 20 days at four NaCl concentrations (0, 100, 200, 300 & 400 mM). The dry weight of leaves was maximal in plants which were grown at 100 to 200 mM NaCl treatments and after 10d it was decreased slightly at salt treatments of more than 300 mM NaCl. Under the salt conditions, leaves of B. vulgaris contained high inorganic ions to maintain low water potential, but low water soluble carbohydrate contents. Total ionic content and osmolality increased with increasing salt concentration. Salt stress led to a preferential accumulation of glycine betaine in leaves of B. vulgaris, especially for the 200 mM NaCl treatment. These findings suggest that a high degree of NaCl tolerance of B. vulgaris resulted from the accumulation of glycine betaine, which is known to have osmoprotectant properties in the cytoplasm.
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