夜间低温胁迫下钙对番茄幼苗根系活力及活性氧代谢的调控作用

j4(EGTA) 0Y4(LaCl3)I N “ 、 V c 、 V#(ROS) eT。TV,W ( ,V7Y 317-18 。“ sCa2+ e,FB iCa2+ VA4 /(“ 5 。 kTV ,W (25 /6 ,/)/I N “ A/, EGTALaCl3F“ Y;7Ca2+A4“ ,V7 。 Ca2+ ?h“,V7VC “ 。 3 Hq/,% =3 b“) , ,7 I ,V7 3V1, P% 3 ? s 19-20 。V , MDA Vs1B, c s M121 。 k,W) I N “MDA 、H2O2c A 6, O2 - 3 q9Av, N H8 = 3b“dW % ,% X s,% 3 ?。 7Ca2+9I N “MDA 、H2O2c A(m2、m3), O2- 3 q9 sA(m4)。V ? /I N “ V, % ,V7 8 =。V % s0hM ,? 3 T,V7 P s0 , i22-23 , 。W /I N“ = V c A,Ca2+9A4 /I N “ V c 。 Ca2+T | = 3 Q= P, VB 9 . 3 L/ M . +: a S/ ,2001.13 u W, ,B. 3 L M .:S j S/ ,2002. 14 ;, .| 01ZE J . 2,2005,27(2):211-216 15 y B,o,u .T v 3 3 L M .:S ,2007.16 3. 3 3 L / M .:,1999. 17 Z, , ,. N0Q “ Y J . 3 ,2006,17(3):390-394. 18 X, .( “ # 3 Y J . j S,2000(4):17-19.19 , 9,.Ca2+V Fe2+ / # VY J .T,2003, 29(3):447-451. 20 3.= /Y D . 2: 2 jv,2007. 21 Roxas V P,Lodhi S A,Garrett D K, et al .Stress tolerancein transgenic tobacco seedlings that overexpress glutathi-one transferase and glutathione peroxidase J .Plant andCell Physiology,2000,4(1):1229-1234. 22 6,lo, ,. / F # VY J .S S,2007,21(4):367-371. 23 Knight H, Trewavas A J,Knight M R.Calcium signallingin a rabidopsis thaliana responding to drought and salinity J .The Plant,1997,12:1067-1078.24 Pandey S, Tiwari S B, Upadhyaya K C, et al.Calcium sig-naling:Linking environmental signals to cellular functions J .Critical Reviews in Plant Sciences,2000,19:291-318. 25 o,L . F4 N0 F Y J .,2002,29(3):243-246.132 j 20