盐胁迫下不同基因型番茄可溶性物质含量的变化  

Changes in Solute Content of Different Tomato Genotypes Under Salt Stress

作　　者：刘凤荣[1] 陈火英[1] 刘杨[1,2] 卫志明[3] 

机构地区：[1]上海交通大学农业与生物学院 [2]沈阳农业大学,沈阳110161 [3]中国科学院上海生命科学研究院植物生理生态研究所

出　　处：《植物生理与分子生物学学报》2004年第1期99-104,共6页Journal Of Plant Physiology and Molecular Biology

基　　金：国家"十五"863项目(No.2001AA67010)资助。

摘　　要：以两种野生番茄秘鲁番茄(Lycopersiconperuvianum LA111)、 潘那利番茄(Lycopersiconpennellii LA716)和两种栽培番茄“鲜丰98-7”、“交农1号”为材料,用NaCl 150 mmol/L进行盐胁迫,测定及分析了植株体内Na+、K+、Ca2+等无机离子和某些有机溶质游离脯氨酸、可溶性糖的含量。结果表明,盐胁迫条件下,野生番茄在新叶中积累了大量的Na+等无机离子,而栽培番茄新叶内脯氨酸和可溶性糖的含量却显著提高,且它具有将吸收的Na+区域化到老叶中的能力。说明野生番茄和栽培番茄在可溶性物质的合成和积累能力上有明显差异,它们是通过不同代谢途径和机理来适应盐环境的。Two wild tomato species Lycopersiconperuvianum LA111, Lycopersicon pennellii LA716 andtwo cultivars Xianfeng 98-7,Jiaonong No.1 withdifferent salt tolerance were treated with NaCl 150mmol/L, and to measure the inorganic ions Na+,K+,Ca2+ contents and the organic compounds free proline,soluble sugar contents. The results indicated that un-der salt stress, the wild species accumulated much Na+in young leaves(Fig.3), while cultivated speciesproduced and accumulated much free proline andsoluble sugar in young leaves(Figs.1,2), and Na+ wasmostly distributed to old leaves(Fig.3). So it canbe seen that there are marked differences between wildspecies and cultivars in producing and accumulatingthese solutes under salt treatment. They adapt to saltstress through different salt tolerance mechanisms.

关 键 词：野生番茄 栽培番茄 盐胁迫 游离脯氨酸 可溶性糖 离子 

分 类 号：S641.2[农业科学—蔬菜学]