Qhov sib txawv tseem ceeb ntawm kev ua haujlwm tau txais kev tiv thaiv thiab ua rau lub cev tsis muaj zog yog tias hom kev ua haujlwm ntawm lub cev tau txais kev tiv thaiv yog pib los ntawm salicylic acid, thaum hom kev txiav txim ntawm induced systematic resistance yog pib los ntawm jasmonic acid.
Cov nroj tsuag muaj ntau yam kev tiv thaiv kab mob los tiv thaiv kab mob thiab kev ntxhov siab. Cov nroj tsuag tiv thaiv kab mob pom cov kab mob cuam tshuam nrog cov qauv molecular thaum lawv kis kab mob. Systemic acquired resistance thiab induced systemic resistance yog ob txoj hauv kev loj hauv cov nroj tsuag tiv thaiv kab mob. Cov txheej txheem tiv thaiv no tau tshwm sim los ntawm kev txhawb nqa ua ntej kev kis mob tshwm sim los ntawm tus kab mob lossis kab mob cab.
Dab tsi yog Systemic Acquired Resistance (SAR)?
Systemic acquired resistance (SAR) yog ib hom txheej txheem uas qhov kev tiv thaiv tau txais kev tiv thaiv ntev ntev tiv thaiv cov kab mob dav dav. SAR xav kom cov molecule salicylic acid (SA) los muab lub teeb liab thiab pab nyob rau hauv tsub zuj zuj ntawm cov proteins uas muaj feem xyuam rau pathogenesis nyob rau hauv cov nroj tsuag. SA yog ib qho tseem ceeb phytohormone uas ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv kev tiv thaiv.
Daim duab 01: Kev Tau Txais Kev Ua Haujlwm
SAR xa cov cim tiv thaiv thoob plaws hauv cov nroj tsuag tiv thaiv kab mob thib ob. Nws kuj tseem koom nrog hauv kev tsim thiab kev thauj cov cim los ntawm phloem mus rau cov ntaub so ntswg uas tsis muaj kab mob. Ib qho ntawm feem ntau cov khoom ntawm SA yog methylated derivative ntawm SA. SA biosynthesis tshwm sim los ntawm txoj kev shikimic acid. Txoj hauv kev no ua rau ob txoj hauv kev hu ua isochorismate synthase (ICS), thiab phenylalanine ammonia-lyase (PAL) muab tau los ntawm txoj kev. SA tsim los ntawm ICS thiab PAL txoj hauv kev pab txhawb rau kev tsim thiab tsim SAR. Lub SA signaling uas ua rau SAR nyob ntawm cov ankyrin rov-muaj cov tsis-expresser ntawm pathogenesis ntsig txog noob.
Yuav ua li cas tiv thaiv kab mob (ISR) yog dab tsi?
Induced systemic resistance (ISR) yog ib txoj hauv kev hauv cov nroj tsuag uas tau txais los ntawm kev kis kab mob. Hom kev ua ntawm ISR tsis yog nyob ntawm kev puas tsuaj ncaj qha lossis inhibition ntawm cov kab mob tab sis koom nrog kev nce ntawm lub cev lossis tshuaj tiv thaiv ntawm cov nroj tsuag.
ISR nyob ntawm cov teeb liab hloov txoj hauv kev uas tau qhib los ntawm jasmonate thiab ethylene. Cov txheej txheem tiv thaiv tau txhim kho los ntawm jasmonic acid (JA). JA yog tsim los ua qhov sib xyaw ua ke kom ncav cuag cov nroj tsuag thiab cov nroj tsuag nyob ze kom txo tau cov kab mob tawm tsam thiab ua rau cov lus teb hauv cov nroj tsuag tiv thaiv. ISR cov lus teb kho los ntawm rhizobacteria, thiab lawv ua tau zoo tiv thaiv kab mob necrotrophic thiab kab. Cov yam ntxwv lom neeg ntawm ISR suav nrog ob pawg, thiab lawv yog cov nroj tsuag cuam tshuam rau cov kab mob induction lossis fungi, uas txhawb cov nroj tsuag kev loj hlob, thiab cog kev loj hlob-txhim kho cov kab mob rhizosphere los yog cov nroj tsuag kev loj hlob-txhawb cov fungi. Lawv txhawb kev loj hlob ntawm cov nroj tsuag thiab ua kom cov qoob loo nce ntxiv thaum nce tus nqi ntawm cov nroj tsuag tiv thaiv kab mob los ntawm cov kab mob los yog kab tsuag.
Dab tsi yog qhov zoo sib xws ntawm Systemic Acquired Resistance thiab Induced Systemic Resistance?
- Systematic tau txais kev tiv thaiv thiab induced systematic tsis kam yog cov txheej txheem ua haujlwm hauv cov nroj tsuag.
- Lawv tawm tsam cov neeg tawm tsam xws li kab mob thiab kab mob.
- Ob lub tswv yim ua rau cov txiaj ntsig ntawm qhov tsis yog qhov qhia txog cov kab mob ntsig txog cov noob.
- Nyob rau hauv ob qho tib si, kev tiv thaiv cov nroj tsuag yog preconditioned los ntawm yav dhau los kab mob los yog kev kho mob rau tiv thaiv kab mob.
Qhov txawv ntawm Qhov Kev Tau Txais Kev Tiv Thaiv thiab Kev Txhaum Qhov Kev Ua Haujlwm Zoo Li Cas?
Hom kev ua haujlwm ntawm kev ua haujlwm tau txais kev tiv thaiv yog pib los ntawm salicylic acid, thaum lub hom phiaj ntawm kev ua haujlwm ntawm kev ua haujlwm tsis zoo yog pib los ntawm jasmonic acid. Yog li, qhov no yog qhov sib txawv ntawm qhov systemic acquired resistance thiab induced systemic resistance. Tsis tas li ntawd, lub luag haujlwm tseem ceeb ntawm lub cev tau txais kev tiv thaiv yog los tiv thaiv cov kab mob thib ob kis tau los ntawm tus kab mob thawj zaug, thaum lub luag haujlwm tseem ceeb ntawm induced systemic resistance yog qhia lub cev thiab tshuaj tiv thaiv kab mob. Tsis tas li ntawd, salicylic acid yog lub ntsiab lus qhia molecule ntawm lub cev tau txais kev tiv thaiv, thaum ob qho tib si jasmonic acid thiab ethylene koom nrog hauv cov teeb liab ntawm induced systemic resistance.
Cov hauv qab no infographic nthuav tawm qhov sib txawv ntawm qhov systemic tau txais kev tiv thaiv thiab induced systemic resistance nyob rau hauv daim ntawv tabular rau kev sib piv ntawm ib sab.
Summary – Systemic Acquired Resistance vs Induced Systemic Resistance
Systemic acquired resistance thiab induced systemic resistance yog ob txoj hauv kev loj hauv cov nroj tsuag tiv thaiv kab mob. Cov txheej txheem tiv thaiv no tau tshwm sim los ntawm kev txhawb nqa ua ntej kev kis mob tshwm sim los ntawm tus kab mob lossis kab mob cab. Hom kev txiav txim nyob rau hauv systematic tau txais kuj yog pib los ntawm salicylic acid, thaum lub hom ntawm kev txiav txim nyob rau hauv induced systematic tsis kam yog pib los ntawm jasmonic acid. Systemic acquired resistance yog ib hom txheej txheem uas qhov kev tiv thaiv tau txais kev tiv thaiv ntev ntev tiv thaiv cov kab mob dav dav. Induced systemic resistance yog ib txoj hauv kev hauv cov nroj tsuag qhib los ntawm kev kis kab mob. Yog li, qhov no qhia txog qhov sib txawv ntawm qhov systemic acquired resistance thiab induced systemic resistance.
