HSO_3^-、Cl^-和Na^+对大豆幼苗光合作用的影响  

Influence of HSO_3^-,Cl^- and Na^+ on Photosynthesis of Soybean Seedlings

作　　者：郝建军[1] 卢环[1] 黄春花[1] 于洋[1] 

机构地区：[1]沈阳农业大学生物科学技术学院,辽宁沈阳110866

出　　处：《大豆科学》2012年第5期855-857,860,共4页Soybean Science

基　　金：辽宁省教育厅科学技术研究项目(2004A011)

摘　　要：以铁丰31大豆幼苗为试材,在大豆幼苗叶片完全展开时以一定浓度的NaCl和NaHSO3及清水喷施于叶片的正反两面,测定光合速率、可溶性糖、光合色素等生理指标,以探讨HSO3-、Cl-和Na+对光合作用的影响。结果表明:Na+对大豆幼苗叶片可溶性糖含量的增加、ATP合酶活性的提高、叶片Rubisco含量的增加均有一定的促进作用。Cl-在整个实验中作用不明显。HSO3-对大豆幼苗叶片叶绿素a和叶绿素b的合成有显著促进作用;并能显著提高全链光合电子传递速率、ATP合酶活性,使光合磷酸化过程加强;HSO3-显著提高了Rubisco羧化活性及PEPC活力和PEPC比活力;并提高了Rubisco和PEPC含量,从而促进大豆幼苗的光合速率增加。Soybean seedlings of Tiefeng No. 31 was sprayed with NaC1 and NaHSO3 solutions,respectively, and determined the photosynthetic rate, soluble sugar, photosynthetic pigment and other physiological indexes. Na ~ increased soluble sugar con- tent, ATP enzyme activity, and the content of Rubiscoase of soybean leaves. HSO3- promoted the synthesis of Chl a and Chl b ; significantly increased the whole chain photosynthetic electron transfer rate and ATP synthase activity, strengthened the photo- synthetic phosphorylation process, and speed up the process of the dark reactions of photosynthesis. Furthermore, HSO3- signif- icantly improved the Rubiscoase carboxy change activity, PEPCase vitality as well as content of Rubisco and PEPC. Hence, pro- moted the photosynthetic rate of soybean seedlings.

关 键 词：NACL NAHSO3 大豆幼苗 光合作用 RUBISCO 

分 类 号：S565.1[农业科学—作物学]