Shaanxi BLOOM Tech Co., Ltd. yog ib tug ntawm cov uas paub txog manufacturers thiab lwm tus neeg ntawm abscisic acid hmoov cas 14375-45-2 nyob rau hauv Suav teb. Txais tos rau cov lag luam wholesale zoo siab abscisic acid hmoov cas 14375-45-2 muag ntawm no los ntawm peb lub hoobkas. Kev pabcuam zoo thiab tus nqi tsim nyog muaj.
Abscisic acid hmoov, dawb hmoov, Nws yog ib qho yooj yim rau yaj nyob rau hauv methanol, ethanol, acetone, chloroform, ethyl acetate thiab chloroform, tab sis nyuaj rau yaj nyob rau hauv ether, benzene, thiab lwm yam stability ntawm abscisic acid yog zoo. Cov ntsiab lus ntawm cov khoom xyaw tseem ceeb tsis hloov pauv tom qab khaws cia hauv chav sov li ob xyoos, tab sis nws yuav tsum tau muab kaw thiab khaws cia rau hauv qhov chaw qhuav, txias thiab tsaus. Abscisic acid aqueous tov yog rhiab rau lub teeb thiab belongs rau lub teeb muaj zog decomposition compound. Nws yog ib qho organic nrog cov tshuaj formula ntawm c15h20o4. Nws yog ib tsob nroj hormone uas inhibits kev loj hlob. Nws muaj npe rau nws lub peev xwm ua rau nplooj poob. Nws tuaj yeem muab faib rau hauv cov nroj tsuag siab dua. Ntxiv nrog rau kev txhawb nqa cov nplooj abscission, nws kuj muaj lwm yam haujlwm, xws li muab buds rau hauv lub xeev dormant thiab txhawb nqa qos yaj ywm los ua tubers. Nws kuj inhibits lub caij nyoog ntawm cov cell. Nws tau lees paub xyoo 1965 tias abscisin II thiab dormancy yog tib yam khoom, uas yog lub npe hu ua abscisic acid.
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Tshuaj Formula |
C15H20O4 |
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Exact Mass |
264 |
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Molecular Luj |
264 |
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m/z |
264 (100.0%), 265 (16.2%), 266 (1.2%) |
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Elemental Analysis |
C, 68.16; H, 7.63; O, 24.21 |
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Tam sim no kev lag luam thoob ntiaj teb ntawm abscisic acid zoo dua li kev lag luam hauv tsev. Tebchaws Asmeskas, Nyiv thiab lwm lub tebchaws tau paub thiab nkag siab txog abscisic acid, thiab pib maj mam siv cov tshuaj abscisic acid npaj rau kev ua liaj ua teb, thiab kev noj cov khoom lag luam kuj nce qib zuj zus. Nyob rau hauv Tuam Tshoj, kev lag luam daim ntawv thov ntawm abscisic acid npaj yog tsawg, thiab abscisic acid kev ua lag luam yuav tsum nyob rau hauv luv luv nyob rau hauv cov kev loj hlob qauv, tab sis nyob rau hauv tam sim no, nws yog nyob rau hauv ib tug txawv qhov teeb meem ntawm mov ntau tshaj qhov xav tau.
Abscisic acid biosynthesis muaj ob txoj hauv kev tseem ceeb:
Nyob rau hauv txoj kev no, abscisic acid yog tsim los ntawm methylwallonic acid (MVA) los ntawm isopentenyl pyrophosphate (IPP), farnesyl pyrophosphate (FPP), thiab tom qab ntawd los ntawm qee cov txheej txheem tsis paub los tsim abscisic acid. Txoj kev no tseem hu ua C15 direct pathway. MVA → → FPP → → ABA .
Nyob rau hauv txoj kev no, cov precursors ntawm abscisic acid, isopentenyl pyrophosphate (IPP) thiab dimethylene pyrophosphate (dmapp), tsis yog synthesized los ntawm MVA txoj kev, tab sis los ntawm 2-c-methyl-d-erythritol-4-phosphate, thiab txoj kev mus rau C. pyrophosphate (GPP), farnesyl pyrophosphate (C15, farnesyl pyrophosphate, FPP), C20, geranylgeranyl pyrophosphate (GGPP), kom txog rau thaum tag nrho cov trans beta carotene yog synthesized.
Abscisic acid muaj cov ntawv thov dav dav hauv kev ua liaj ua teb thiab tuaj yeem tsim cov txiaj ntsig tseem ceeb ntawm kev lag luam thiab kev sib raug zoo. Hauv cov ntsiab lus, muaj ntau yam hauv qab no:
(1) Abscisic acid yog ib qho zoo inhibitor ntawm noob germination, thiab nws tshwm sim raws li ib tug loj hlob inhibitor nyob rau hauv ntau dormant noob ntawm cov nroj tsuag. Ntau cov noob qoob loo tuaj yeem soaked hauv abscisic acid los tiv thaiv germination, thiab nws cov nyhuv yog thim rov qab. Nws yog ib qho yooj yim uas yuav tsum tau ntxuav tawm ntawm cov noob kho thiab rov ua kom loj hlob dua. Yog li, abscisic acid tuaj yeem siv los tiv thaiv cov noob germination thiab siv rau cov noob cia.
(2) Abscisic acid tuaj yeem txhawb nqa cov khoom khaws cia, tshwj xeeb tshaj yog khaws cia cov protein thiab suab thaj, hauv cov noob thiab txiv hmab txiv ntoo. Kev siv abscisic acid sab nraud thaum lub sijhawm pib ntawm cov noob thiab kev loj hlob ntawm cov txiv hmab txiv ntoo tuaj yeem ua tiav lub hom phiaj ntawm kev nce cov qoob loo ntawm cov qoob loo thiab txiv hmab txiv ntoo.
(3) Abscisic acid tuaj yeem txhim kho kev ua kom qhuav thiab ntsev ntawm cov nroj tsuag, thiab muaj cov txiaj ntsig zoo hauv kev pab tib neeg tiv thaiv cov cheeb tsam arid, txhim kho thiab siv cov qoob loo qis, thiab kev cog qoob loo.
(4) Siv exogenous abscisic acid rau cov nplej thiab lwm yam qoob loo tuaj yeem inhibit qia elongation, nce qhov hnyav, thiab tiv thaiv qoob loo; Tsawg concentration abscisic acid tuaj yeem txhawb kev tsim thiab rov ua dua tshiab ntawm cov hauv paus hniav adventitious, thiab muaj kev thov dav dav hauv cov ntaub so ntswg kab lis kev cai.
Abscisic acid yog ib yam khoom uas feem ntau pom nyob rau hauv cov nroj tsuag, uas yog ib txwm muaj nyob rau hauv txiv hmab txiv ntoo, zaub, thiab nplej noj los ntawm tib neeg thiab muaj kev nyab xeeb rau tib neeg thiab ib puag ncig. Cov khoom siv raw siv hauv cov txheej txheem tsim khoom ntawm abscisic acid raw cov ntaub ntawv tsis yog - tshuaj lom thiab tsis muaj kev phom sij rau kev ua liaj ua teb thiab cov khoom siv sab nraud, tsis muaj cov khoom tsim kev puas tsuaj lossis cov khoom siv ntxiv, thiab tsis muaj cov tshuaj lom nyob hauv lawv cov qauv tshuaj.
(3) Abscisic acid tuaj yeem txhim kho qhov txias thiab Frost tsis kam ntawm cov nroj tsuag, thiab tuaj yeem siv los pab cov qoob loo tiv taus qhov kub thiab txias thaum lub caij nplooj ntoo hlav thaum ntxov thiab cog qoob loo tshiab ntau yam nrog lub zog txias. Hauv kev sim Xiaotian ua nyob rau hauv Beijing, Xindong No.2 lub caij ntuj no nplej tau soaked hauv 10 ~ 6 M rau 24 teev. Nws tau cog rau lub Kaum Hlis 26 ntawm thawj xyoo ntawm qhov chaw sim. Thaum cov noob nplej thawj zaug tshwm sim, lawv nkag mus rau lub caij ntuj no txias. Thaum lawv tig ntsuab rau xyoo tom ntej, qhov ciaj sia taus ntawm pawg tswj hwm yog 51.4%, thaum cov pab pawg abscisic acid soaked mus txog 96.3%.
Cov nyhuv ntawm abscisic acid ntawm kev txhim kho cov nplej txias tsis kam muaj ob yam ntxwv: ua ntej, nws tuaj yeem txhim kho qhov txias tsis muaj kev cuam tshuam kev loj hlob; Qhov thib ob, nws tuaj yeem ua rau muaj qhov ua kom txias txias nyob rau hauv qhov chaw sov. Kev tiv thaiv txias ntawm cov nroj tsuag tsuas yog tsim los ntawm kev tawm dag zog ntawm qhov kub thiab txias. Cov yam ntxwv ntawm abscisic acid tsis tsuas yog muaj qhov tseem ceeb rau kev tshawb nrhiav kev qhia thiab kev tswj hwm ntawm cov noob caj noob ces, tab sis kuj tseem tuaj yeem ua rau muaj kev cia siab rau kev tiv thaiv lub caij nplooj ntoo hlav lig rau cov qoob loo overwintering.
Txhawb kev detachment
Raws li lub npe abscisic acid, accelerating cog organ abscission yog ib qho tseem ceeb physiological muaj nuj nqi ntawm ABA.
Muaj kev xav sib txawv ntawm qhov teeb meem ntawm ABA ua rau nplooj, paj, thiab txiv hmab txiv ntoo abscission. Raws li ib tug ntawm cov discoverers ntawm ABA, Addicott (1982) ntseeg raws li ib tug loj tus naj npawb ntawm qhov tseeb hais tias cov nyhuv ntawm endogenous ABA rau kev txhawb abscission yog tej yam.
Txawm li cas los xij, kev sim hauv thaj chaw siv ABA ua tus defoliant tsis tau ua tiav. Qhov no tej zaum yuav yog vim qhov txiaj ntsig ntawm IAA, GA, thiab CTK hauv nplooj ntawm ABA.
Milborrow (1984) ntseeg tias exogenous ABA tuaj yeem ua rau abscission, tab sis nws cov nyhuv qis dua li ntawm exogenous ethylene.
Osborne (1989) tau xaus lus hauv nws qhov kev tshuaj xyuas txog qhov cuam tshuam ntawm ethylene thiab ABA ntawm abscission tias ABA yuav tsis muaj qhov cuam tshuam ncaj qha rau abscission, tab sis tsuas yog ua rau kev laus ntxov ntxov ntawm lub cev nqaij daim tawv, uas tom qab ntawd txhawb kev nce hauv ethylene ntau lawm thiab ua rau abscission. Qhov tseeb pib ntawm cov txheej txheem abscission yog ethylene, tsis yog ABA.
Txoj kev sim tshuaj lom neeg rau ABA feem ntau siv cov taum nplooj (lossis paj rwb) txoj kev tso tawm, nyob rau hauv uas lanolin muab tshuaj txhuam ntawm cov tshuaj ntsuam xyuas yog siv rau qhov seem seem ntawm cov nplooj nplooj ntoo, thiab pom qhov nrawm nrawm. Tsis tas li ntawd, cov txheej txheem ntawm inhibiting elongation ntawm oat lossis nplej embryo sheath ntu kuj tseem siv.
inhibit kev loj hlob
ABA yog ib qho tshuaj tiv thaiv kev loj hlob uas tuaj yeem cuam tshuam kev loj hlob ntawm tag nrho cov nroj tsuag lossis cov kab mob sib cais. ABA muaj qhov cuam tshuam rau kev loj hlob piv rau IAA, GA, thiab CTK, vim nws inhibits cell division thiab elongation. Nws inhibits qhov elongation thiab kev loj hlob ntawm cov kabmob xws li embryonic sheath, kev sib tw ceg, cov hauv paus hniav, thiab embryonic axis.
Txhawb kev dormancy
Nyob rau hauv luv luv hnub ntawm lub caij nplooj zeeg, ABA cov ntsiab lus nyob rau hauv nplooj ntawm ntau woody nroj tsuag nce, txhawb lub buds mus rau dormancy. Kev thov ABA rau cov ceg ntoo loj hlob ntawm cov ntoo ntoo no tuaj yeem ua rau cov paj dormancy. Lub dormant buds ntawm qos yaj ywm kuj muaj ib qho tseem ceeb ntawm ABA. Yog li, ABA tuaj yeem siv los kho cov qos yaj ywm kom ntev lawv lub sijhawm dormancy. Lub germination ntawm noob xws li lettuce thiab radish kuj inhibited los ntawm ABA. Pine liab, txiv duaj, txiv ntseej, maple thiab lwm yam dormant noob muaj ABA ntau.
Tom qab ob peb lub hlis ntawm qis -kub stratification kev kho mob, ABA cov ntsiab lus hauv cov noob tau txo qis thiab cov germination tus nqi nce ntxiv. Tab sis qib ntawm ABA cov ntsiab lus tsis tas yuav yog qhov ua rau cov noob dormancy. Cov ntsiab lus ABA nyob rau sab nrauv ntawm Pinus koraiensis noob yog siab. Tom qab ntxuav nrog dej, ABA cov ntsiab lus tau txo qis, tab sis tus nqi germination tseem qis. Kev soj ntsuam ntxiv ntawm ABA cov ntsiab lus hauv cov noob ntawm Yunnan ntoo thuv, Pinus tabulaeformis, Huashan ntoo thuv, thiab Pinus tabulaeformis tau qhia tias qee cov noob ntoo ntoo kuj muaj cov ntsiab lus ABA siab tab sis tsis pom qhov dormancy. Piv txwv li, ABA cov ntsiab lus ntawm cov noob tsis dormant Pinus armandii yog li 10 npaug siab dua li ntawm cov noob Pinus koraiensis dormant.
Ua rau lub plab kaw
Kho qhov qhib ntawm lub qhov cua. Muaj ob txoj hauv kev qhia txog qhov uas ABA tswj kev kaw lub plab: txhawb kev kaw lub plab thiab inhibiting stomatal qhib. Nyob rau hauv cov dej tsis txaus, cov ntsiab lus ntawm ABA hauv cov nplooj nplooj nce, ua rau lub plab kaw. Qhov no yog vim ABA txhawb cov efflux ntawm poov tshuaj ions, chloride ions, thiab malic acid ions, uas nyob rau hauv lem txhawb lub plab kaw. Txau ABA aqueous tov rau ntawm nplooj nplooj tuaj yeem kaw stomata thiab txo qis qhov kis. Yog li, ABA tuaj yeem ua tus neeg sawv cev tiv thaiv kab mob. Tsis tas li ntawd, ABA inhibits qhov kev txiav txim ntawm cov poov tshuaj ions thiab cov twj tso kua mis proton, yog li suppressing stomatal qhib.
Regulating kev loj hlob ntawm noob embryos
Nyob rau hauv xyoo tas los no, nws tau raug sau tseg tias endogenous ABA plays lub luag haujlwm tseem ceeb raws li kev tswj hwm zoo thaum lub sij hawm kev loj hlob ntawm noob embryo. Endogenous ABA tuaj yeem txhawb nqa kev loj hlob ntawm embryo thiab kev loj hlob, nrog rau inhibit germination ntxov ntxov. Nyob rau hauv cov kab lis kev cai embryo tsis paub qab hau, exogenous ABA tuaj yeem ua kom muaj cov proteins tshwj xeeb cia; Yog tias tsis muaj ABA, cov embryos no tsis tuaj yeem tsim cov proteins los yog tsim tsawg heev. Qhov no qhia tau hais tias ABA qib thaum ntxov thiab nruab nrab cov noob kev loj hlob tswj cov tsub zuj zuj ntawm cov proteins cia.
Txawm hais tias ABA tseem tswj hwm cov hmoov txhuv nplej siab thiab rog hauv kev tsim cov embryos yog ib lo lus nug uas yuav tsum tau kawm.
Tsis tas li ntawd, ABA tseem tuaj yeem ua cov khoom siv rau cov nroj tsuag tiv thaiv ntsev, cua sov, thiab txias puas tsuaj, uas tej zaum yuav cuam tshuam rau nws lub peev xwm los txhawb kev tsim cov proteins tshiab hauv cov nroj tsuag. ABA kuj tseem tuaj yeem txhawb kev sib txawv ntawm cov paj ntoo hauv qee cov ntoo txiv ntoo (xws li txiv apples) thiab ua kom muaj paj hauv qee hnub luv luv (xws li blackcurrants) nyob rau hauv hnub ntev.
Ua kom muaj zog
Feem ntau hais lus, kev nyuaj siab xws li dej qhuav, txias, kub, salinity, thiab waterlogging tuaj yeem nce ABA sai sai hauv cov nroj tsuag, thaum txhim kho lawv cov kev ntxhov siab. ABA tuaj yeem txo qhov kev puas tsuaj ntawm qhov kub thiab txias rau ultrastructure ntawm chloroplasts thiab ua kom lawv cov thermal stability; ABA tuaj yeem cuam tshuam cov kev sib txuas ntawm qee cov enzymes thiab ua rau cov nroj tsuag tsis kam tiv thaiv txias, dej, thiab ntsev. Yog li ntawd, ABA yog hu ua stress hormone lossis stress hormone.
Muaj feem xyuam rau kev sib deev sib txawv
Gibberellin tuaj yeem ntxias txiv neej paj hauv cov poj niam cov nroj tsuag ntawm cannabis, uas tuaj yeem thim rov qab los ntawm abscisic acid, tab sis abscisic acid tsis tuaj yeem ntxias poj niam paj hauv txiv neej cov nroj tsuag.
FAQ
Dab tsi yog abscisic acid thiab nws txoj haujlwm?
Abscisic acid yog qee zaum abbreviated li ABA lossis ABA hormone. Abscisic acid yog ib qho tshuaj hormones uas tswj kev loj hlob, kev loj hlob, thiab kev ntxhov siab hauv cov nroj tsuag, tshwj xeeb yog los ntawm inhibition ntawm cell division hauv cov nroj tsuag hlwb (uas yog, txwv tsis pub cov hlwb los ntawm kev tsim ntau lub hlwb).
Vim li cas abscisic acid tseem hu ua?
Abscisic acid yog hu ua cov tshuaj hormones kev ntxhov siab vim nws induces ntau cov lus teb hauv cov nroj tsuag tiv thaiv kev ntxhov siab. Nws ua rau kom muaj kev zam ntawm cov nroj tsuag mus rau ntau yam kev ntxhov siab. Nws induces kaw lub stomata thaum lub sij hawm dej kev nyuaj siab. Nws txhawb cov noob dormancy thiab ua kom cov noob germination thaum lub sij hawm zoo.
Leej twg nrhiav tau abscisic acid?
Xyoo 1963, abscisic acid tau pom thawj zaug thiab pom tias yog cov tshuaj cog qoob loo los ntawm Frederick T. Addicott thiab Larry A. Davis. Lawv tau kawm cov tebchaw uas ua rau abscission (shdding) ntawm paj rwb txiv hmab txiv ntoo (bolls).
Cov nroj tsuag tshuaj twg hu ua kev ntxhov siab hormone?
Kev piav qhia: ABA (Abscisic acid) tseem hu ua cov tshuaj hormones kev ntxhov siab vim nws tiv thaiv cov nroj tsuag los ntawm huab cua ib puag ncig zoo li dej ntxhov siab. ABA txhawb kev laus thiab abscission (poob) ntawm nplooj thiab txiv hmab txiv ntoo.
Cim npe nrov: Abscisic Acid CAS 14375-45-2, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, yuav, nqe, tej, kev muag khoom