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缺磷胁迫对长豇豆幼苗脱落酸含量的影响

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缺磷胁迫对长豇豆幼苗脱落酸含量的影响

Œ}  ‚ ‹ c •Y刘厚诚1 , 邝炎华2 , 陈日远11 2 j R R。 Œ} / „K › †Z 7ABAc  6, 6–P ] R R,Œ Œ ABAc  RP ] R; Œ} / ABAc   6, 6– R RP ]。 Œ} / ABAc 9F V \„ s {、h V,  Œ}  a‹B。1oM; Œ} ;ABAc ms |Q945.1 DS M ’A cI|1008-505X200406-0629-04Effect of phosphorus-deficiency stress on abscisic acid contents inasparagus bean seedlingsLIU Hou-cheng1 , KUANG Yan-hua2, CHEN Ri-yuan11 Collegeof Hort., South China Agric.Univ., Guangzhou 510642 , China ;2 College of LifeSci.,South China Agric.Univ., Guangzhou510642 , ChinaAbstractUnder phosphorus-deficiency stress, changes of abscisic acid ABAcontents in seedling of three asparagusbean [ Vigna unquiculata W .ssp.sesquipedalis L .Verd] cultivars differing in tolerance to phosphorus-deficiencywere studied.The results showed that ABA contents in root increased under P-deficiency stress, ABA contents declinedearly , then increased to a peak, and declined again, the peak appeared earlier in cv .Erlubai Low P-deficiency-toler-ancethan cv .Luhuabai High P-deficiency-tolerance.The increase in cv .Xianggangqing cv .Erlubai cv.Luhuabai.The ABA contents in older leaf, stem and youngest fully-expanded leaf increased under P-deficiency stress,the increase in cv.Xianggangqing cv.Erlubai cv .Luhuabai , but that in cv.Erlubai cv .Xianggangqing cv.Luhuabai at later stage .The ABA contents in younger leaf and stem increased under P-deficiency stress, the increase incv.Luhuabai cv .Erlubaicv .Xianggangqing.The increase of ABA contents in leaf and stem under P-deficiencystress might enhance transportation of phosphorus and water, reduce membrane lipid peroxidation .Key wordsasparagus bean;phosphorus-deficiency stress;ABA contentsl 2003-09-27  lž 2003-12-18T€e 1968, 3, 2  ,p V, q,1V Y v’ „ 3 。‚ ‹ ABA8  , \ ‚ ‹,„   d1,] 3, s} “ 3,“ ,i VT„ †W| T[ 1] 。‚ y l、e 、]HqT/,ABA 6,iB“  3 M, † 3h 3,[ a‹} 。ABA ž‹„|T,yN“}  ”[ 1] 。‚]‚  F ‚], ABAQ‹ T V  ‚]。} / 3 3 3M,Œ} Y } /ABAM 。 k‚] 0 Œ   Œ} /†sABAc M,kms 0 Œ ABAQ‹W1“。1 ‹ ZEk 0 Œ‚] [ 2] R 0 Œ、P ]W ˜、 R‚ 0 Œg 2004, 106629-632Plant Nutrition and Fertilizer Science。Hoagland Z, P„ Œ-P2 , Œ KK2SO4€ , „iZE[ 2] ‹ 。 |vlB0l b 5,1 Ÿ   5 A 。l7d ,1‡ sZ 7 H, | 3B,€0,“Mž Q 20L, ž   v, Q20。A 7dBQ, ,Y  30minY 10min。M3d 7 S 2d |“1Q,|“†s“、K › †Z 7、 K› †Z 7[/、 K › †Z 7[。 |“ b-80℃bQ i,ELISAZE[ 3] 0‡ 2 j› †Z 7ABAc MŒ} /  K › †Z 7ABAc Mm3。 P RK ›†Z 7ABAc † t ], -PP M ,Œ Œ}   6, 1P 6 50.80。 P  RK › †Z 7ABAc   -   6,11d 7 S/†,7-P  Œ} WABAc ‚ wLM,sY5„11dC‚, 1P482.48。P P ]K › †Z 7ABAc  5d[ -†, 5~ 7d„ 6,[„†;-PMP M , 1P 6630g 10 88.43。 Œ} / K › †Z 7ABAc  6,  6–Kv P ],Q  R, RKl,}   RABAc 1  €。m2 Œ} / ABAc MFig.2 Change of ABA content in elder leaf of asparagus bean seedlings under P-deficiency stressm3 Œ} / K › †Z 7ABAc MFig.3 Change of ABA content in youngest fully expending leaf of asparagus bean seedlings under P-deficiency stress2.4 Œ} / ABAc Mm4 A, P R ABAc  W/† t ], -PMP M , 1P 6 62.13。P  R ABAc 9/† t ],Œ1 R ,7-P ABAc †‚ wLM,‚C Œ7d , 1P 6 53.02。P P ] ABAc o† t ], -PP M , 1P 6 20.38。 Œ}  ABAc 3  6,[ R 6–Kv,P ]Kl。m4 Œ} / ABAc MFig.4 Change of ABA content in new leaf of asparagus bean seedlings under P-deficiency stress6316 , Œ}  ‚ ‹ c •Y3  ‚V ,  s}  3 ABAc 1* O q y[ 4] ,] H  d†9 y。 Œ} /6 ABA i 9F7 AM[ 5] , Œ †ABA {9F6,ABA† ,† •- q,7 O \“ n q,9F_† ;8 ABA  F IŸ9 › †Z 7ABAc  6–sY[P ]„ RK;7 [ RK。I NABA ŒJlM8ž Hq/ † 3 s] YV  3[ 7] ;ABA i9F7‚ ] sr ›KI N † 3[ 8] ;Y ŒJyI NM1,7 3˜I NV Y 3 ] † 31y[ 9] ,77 3˜YVr ›“ ABA†sh  Y 3,] H9†s  † 3[ 10] 。 Œ} / ABAc 9F V \{“d €s„ s {,9 V h V,i V]V Y 3V7 3,  Œ}  a‹B。 0Œ R1‚ 0 Œ R   3。Œ ABAc  6 V  š1, RABAc 1 R, P R1R š ,VC ,i.‚]  Œ} / 3Q‹[ A] .S j.S ] M j S Œ M[ C] .S j, 1999.913-917.[ 3] ,o,–. fM EELISA  [ J] . 3 Y, 1988553-57.[ 4] Radin J W.Stomatal response to water stress and to abscisic acid inphosphorus deficient cotton plants[ J] .Plant Physiol ., 1984, 76392-394.[ 5] Jeschke W D, Peuke A U, Palo J S et al .Transport , synthesis andmetabolism of abscisic acid ABAin intact plant of castor beanRici-nus cvmmunis L .under phosphate deficiency and moderate salinity[ J] .J.Exp.Bot .,1997, 481737-1747.[ 6] 7d,–.   f_/ Œ[ M] . 2 S/ Œ, 1996.124-132, 176-196.[ 7] Sharp R E, LeNoble M E, Else M A et al .Endogenous ABA maintainshoot growth in tomato independently of effects on plant water balance Evidence for an interaction with ethylene[ J] .J.Ext.Bot., 2000, 511575-1584.[ 8] Roberts J A, Hussain A ,Taylor I B, Black C R .Use of mutants to studylong-distance signaling in response to compaction strees[ J] .J.Ext .Bot., 2002, 5345-50.[ 9] Hussain A, Taylor I B, Black C R, Roberts J A .Soil compaction.A roleof ethylene in regulating leaf expansion and shoot growth in tomato[ J] .Plant Physiol., 1999, 1211227-1237.[ 10] Hussain A , Taylor I B, Black C R, Roberts J A .Does an antagonisticrelationship between ABA and ethylene mediate shoot growth when toma-to Lycopersicon esculentum Mill.plants encounter compacted soil[ J] .Plant ,Cell and Envir., 2000,231217-1226.632g 10 

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