氨基酸L-和D-异构体对离体小麦胚植株生长的影响  

Influence of L-and D-Isomers of Amino Acids on Growth of Wheat Embryos Seedling in vitro

作　　者：李友勇[1] 孙海丽[1] 罗姗[1] 

机构地区：[1]河南科技学院生物技术系,新乡453003

出　　处：《生物技术通报》2006年第1期73-77,共5页Biotechnology Bulletin

基　　金：河南省自然科学基金资助项目(0511031100)

摘　　要：5种氨基酸L-和D-异构体对离体小麦胚植株生长的影响结果表明，在1～7mmol·L^-1浓度范围内，脯氨酸异构体均不抑制植株生长；缬氨酸和蛋氨酸的L-型严重抑制生长，D-型不抑制或轻微抑制；丙氨酸则相反，L-型无抑制作用，D-型是严重抑制类型；丝氨酸的L-型轻微抑制生长，D-型严重抑制生长。生长结果也表明，DL-异构体的抑制作用介于D-型和L-型之间。By the studying of the influence of D-type and L-type isomers of five kinds of amino acids on wheat seedling in vitro, the results showed that in the range of concentration of 1～7mmol·L^-1, the isomers of proline had no suppression on the seedlings. L-type isomer of valine and methionine inhibited seedling growth severely, but their D-type isomers did not inhibit or inhibited but lightly. For serine and alanine, their D-type isomers inhibited growth severely, but L-type did not or lightly. The results also showed that the inhibition effect of DL-type methionine, serine and alanine were medium between D- type and L-type＇s.

关 键 词：L-氨基酸 D-氨基酸 DL-氨基酸 小麦胚胎 反馈抑制 

分 类 号：S512.1[农业科学—作物学]