夜間低溫脅迫下鈣對番茄幼苗根系活力及活性氧代謝的調(diào)控作用

j4(EGTA)Á Ö0Y¡Å4(LaCl3)I N¼ ìô“Ïô“ ï、 V ·âc 、 ÉVÄñ#(ROS)¥Ø eT¨。²TVü,W®Ñ ç( Ø,V7Y±þÈ 3É17-18 。±éô“ ï sCa2+ºØ e,FBç iCa2+ VA÷4Ú®Ñ ç/Û(¼ìô“ ï 5 。' k²TV ü,W®Ñ ç(25 /6 ,æ/)/I N¼ ìô“ ïA÷/, EGTALaCl3F×®Ñô“ ï¥Y;7Ca2+A÷4Ú±éô“ ï,V7üÏ±é º。 ª üCa2+ ?hϮѱéô“¥,V7VC¹ Ú¥ô“ ï。È 3 ØHq/,±þ% =¥Á3 b“)¿î ÿ Ü ÿ, £ Ü ®,7 Iâ çö åÊ¥î ÿ Ü,V7Á 3V¥1®, P%¥È 3 Øÿ ? s 19-20 。ùîV ü, MDA «VÄs³¥ö1Áþ­B, c бþ s ñïM121 。' kÏ,W®Ñ) Ø¥I N¼ ìô“MDA 、H2O2c A÷ 6, O2 -·Á 3 Î q9A÷Ú¿v, ª üN H±é8 =Á 3b“dW¥ Ü% åÊ,±é% X s,%¥ 3 Ø ?®。 7Ca2+9ô¥I N¼ ìô“MDA 、H2O2c A÷®(m2、m3), O2-·Á 3 Î q9 sA÷Å(m4)。V ?®¿Á ÍÅ®Ñ ç/I N¼ ìô“ ÉVÄ,»û % ¥È²,V7 £±é8 =òÕÈ。¸ùîV üÁÐ% «s0¥hM õ¤,? 3 óT¨,V7 P¤ «s0ªÏ¥âÉ«²Å á,® i22-23 , £ ¥×ç。W®Ñ ç/I Nô“ = V ·âc A÷®,Ca2+9ôA÷4Ú®Ñ ç/I N¼ ìô“ V ·âc 。 ª üCa2+T¹ ó|Ð = 3 ØQ¥»= P, VBçñ 9 ü.±þ 3 ØÐ L/ M . +: a SÐ/ ñ,2001.13 u W­, >¿ ö,ìB.±þ 3 Ø L· M .Ø:ÏS j< SÐ/ ñ,2002. 14 ÙÑ, ü.±þÏÑ| Ö01®©çZE¥¿É J . 2±þùî,2005,27(2):211-216 15 £y B,±o,uÖ ¼.T vª 3 Ø 3Ä L· M .Ø:ÏS ý<ñ,2007.16 Ù 3.±þ 3 Ø 3Ä Lð Ø/ M .Ø:Ú©âñ,1999. 17 Ú Z,ñ ,· ,©. N0Q¤ ìô“®ÑÌâ ç¥Y J .¨ 3 ÿÐ,2006,17(3):390-394. 18 ¦ X½, ¿.®ÑÛ(¼ ìô“ ï# 3þÐÁ Y¥ùî J . öê j< SÐ,2000(4):17-19.19 ó ,½ñ, 9¥,©.Ca2+V Fe2+ ç/ £ ¹ ½# «VÄ¥Y J .TþÐ,2003, 29(3):447-451. 20 þ 3.Áô=® ç/Â¥Y D . 2Ø: 2Ø j<vÐ,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, ®¼,©.÷Á ç/ £¼ ìFÄ ½# «VÄ¥Y J .ÏS £ SÐ,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 Ú o,çL .ÁØ ÍÁ F4ÐÁ N0¼ ì F Ï¥Y J .óÐ,2002,29(3):243-246.·132· j < Ð 20