南京林业大学学报(自然科学版)
南京林業大學學報(自然科學版)
남경임업대학학보(자연과학판)
JOURNAL OF NANJING FORESTRY UNIVERSITY(NATURAL SCIENCE EDITION)
2006年
2期
89-93
,共5页
徐呈祥%马艳萍%徐锡增%胡恒康
徐呈祥%馬豔萍%徐錫增%鬍恆康
서정상%마염평%서석증%호항강
硅%NaCl胁迫%金丝小枣%膜脂肪酸%膜流动性
硅%NaCl脅迫%金絲小棘%膜脂肪痠%膜流動性
규%NaCl협박%금사소조%막지방산%막류동성
Si%NaCl stress%Ziziphusjujuba cv. Jinsixiaozao%Membrane fatty acid%Membrane fluidity
以2年生金丝小枣为试材,研究了NaCl胁迫下施硅(Si)与金丝小枣的根和叶片膜脂肪酸含量、组成及流动性的关系.结果表明:NaCl胁迫165 d,加硅与不加硅相比,金丝小枣根的饱和脂肪酸含量降低,不饱和脂肪酸含量升高,脂肪酸不饱和指数增大,膜流动性增强,碳链长度保持稳定;而在叶中则呈相反趋势.说明外源硅可调节盐(NaCl)胁迫下金丝小枣细胞膜脂肪酸含量、组成及流动性,该效应与金丝小枣器官的生理功能和生长特性有关.
以2年生金絲小棘為試材,研究瞭NaCl脅迫下施硅(Si)與金絲小棘的根和葉片膜脂肪痠含量、組成及流動性的關繫.結果錶明:NaCl脅迫165 d,加硅與不加硅相比,金絲小棘根的飽和脂肪痠含量降低,不飽和脂肪痠含量升高,脂肪痠不飽和指數增大,膜流動性增彊,碳鏈長度保持穩定;而在葉中則呈相反趨勢.說明外源硅可調節鹽(NaCl)脅迫下金絲小棘細胞膜脂肪痠含量、組成及流動性,該效應與金絲小棘器官的生理功能和生長特性有關.
이2년생금사소조위시재,연구료NaCl협박하시규(Si)여금사소조적근화협편막지방산함량、조성급류동성적관계.결과표명:NaCl협박165 d,가규여불가규상비,금사소조근적포화지방산함량강저,불포화지방산함량승고,지방산불포화지수증대,막류동성증강,탄련장도보지은정;이재협중칙정상반추세.설명외원규가조절염(NaCl)협박하금사소조세포막지방산함량、조성급류동성,해효응여금사소조기관적생리공능화생장특성유관.
Effects of silicon (Si) on membrane fatty acid content, composition and fluidity in root and leaf of two-year old seedlings of Ziziphusjujuba cv. Jinsixiaozao under salt stress were studied. The results showed that the addition of Si had different effects on these parameters in root and leaf of the plant under NaCl stress: in root, the saturate fatty acid content decreased with added Si compared with that of no Si addition. Both the membrane unsaturate fatty acid content and the index of unsaturate fatty acid of the root were promoted under NaCl stress with Si addition, but the effects of exogenous Si on membrane fatty acid (MFA) content and composition of the leaf were contrary to those of in root . The results from this study suggestes that Si regulates the content, composition and fluidity of Ziziphus jujuba cv. Jinsixiaozao under NaCl stress, which is closely related to the physiological functions and growth characteristics of the plant organs.