
absisic assid

sasyangalude oru hormon absisic assid (abaa allengil absisin II). vithum mukulavum nishkriyathvam, avayavangalude valuppathinte niyanthranam, stomaattal closher ennivayulppede niravadhi sasya vikasana prakriyakalil abaa pravartthikkunnu. varalcha, manninte lavanathvam, thanutha sahishnutha, maravippikkal sahishnutha, choodu sammarddam, hevi mettal ayoon sahishnutha ennivayulppedeyulla paaristhithika sammarddangalodulla prathikaranatthil sasyangalkk ithu prathyekichum pradhaanamaan.
kandethal.
1940kalil stockholm sarvakalashaalayil jolie cheiyunnathinide torsttan hemberg, vishrama kaalayalavum urulakkizhangu kizhanguvargangalil acidic eedhar layikkunna valarchaa inhibittarinte sambhavavum thammil oru nalla parasparabandham nilanilkkunnu ennathinu thelivukal kandethi.
1963ll frederic tii aanu absisic aasidine aadyamaayi oru sasya hormonai thirichariyukayum savisheshatha nalkukayum cheythath. adicot larry eiii. davis. paruthikkazhakal (booals) illaathaakaan (choriyunnathinu) kaaranamakunna samyukthangalekkurichu avar padikkukayaayirunnu. rund samyukthangale verthirichu, avaye absisin I, absisin II ennu vilikkunnu. absisin II ippol absisic assid (eiii. bii. eiii) ennaanu ariyappedunnathu.
sasyangalil.
pravartthanam.
abaykk olichodalil ulppettittundennu aadyam vishwasikkappettirunnu, anganeyaan ithinu athinte peru labhichathu. cheria ennam chedikalude kaaryatthil maathramaan ithu ippol ariyappedunnathu. paaristhithika sammarddathodum sasya rogakaarikalodum sasyangalude prathikaranangalil abaa-mediated signalling oru pradhana punk vahikkunnu. abaa biosynthesisinulla sasya jeenukalum paathayude kramavum vyakthamaakkiyittund. sasyangalile abaa biosynthesisil ninnu vyathyasthamaaya biosynthetic maarggathiloode chila sasya rogakarikalaaya fangasukalum abaa uthppaadippikkunnu.
shaithyakaalathinulla thayyaareduppinaayi, abaa terminal budsil uthppaadippikkunnu. ithu chedikalude valarchaye mandagathiyilaakkukayum thanutha seasonil nishkriyamaaya mukulangale samrakshikkunnathinaayi skeyilukal vikasippikkaan ila primordy nayikkukayum cheiyunnu. praadhamikavum dvitheeyavumaaya valarcha thaalkkaalikamaayi nirtthivachukondu shaithyakaalathe thanuppumayi poruthappedutthikkondu rakthakkuzhalile kaambiyatthile koshangalude vibhajanathe abaa thadayunnu.
mannil jalathinte saadhyatha kurayunnathinum (varanda mannumaayi bandhapetta) chedi sammarddathilaayekkaavunna mattu saahacharyangalkkum marupadiyaayi absisic assid verukalil ulpaadippikkappedunnu. pinneedu abaa elakalilekku translocate cheiyunnu, avide athu stomaattal gaard cellukalude ausmotic pottensialine athivegam maattukayum avaa churungukayum stomaatta adaykkukayum cheiyunnu. abaa-induced stomaattal closser traanspireshan (stomaattayil ninnu vellam baashpeekarikkappedunnathu) kuraykkunnu, angane kuranja jala labhyathayude samayangalil elakalil ninnu kooduthal jalakshamam thadayunnu. ilayude vistheernnathinte adisthaanathil elakalude abaa ulladakkavum avayude chaalakathayum (stomaattal resistans) thammil adutha rekheeya parasparabandham kandethi.
gibberelinumaayulla vairudhyathil abaa vithu mulaykkunnathine thadayunnu. vithu nishkriyamaakunnath nashtappedunnathum abaa thadayunnu.
niravadhi abaa-mutent "arabidopsis taliana" plaantukal kandethiyittundu, avaa nottingham arabidopsis stokku sentaril ninnu labhyamaan-avaa randum abaa ulppaadanathil kuravum athinte pravartthanathodu samvedanakshamathayil maattam varuthiyathum aanu. abayodu amithamaayi samvedanakshamathayullatho samvedanakshamathayillaatho aaya sasyangal vithu nishkriyathvam, mulaykkal, stomaattal niyanthranam ennivayil phenotypeukal kaanikkunnu, chila mutentukal valarcha muradichathum thavitt/manja elakalum kaanikkunnu. vithu mulaykkunnathilum aadyakaala bhroona vikasanathilum abayude praadhaanyam eee mutentukal prathifalippikkunnu.
pyrabectin (abaa aaktivettar adangiya pyridil) oru naftaleen sulphonomide hypocodyl sell expansion inhibittaraanu, ithu seed abaa signalling paathayude agonistaanu. gadanaaparamaayi abayumaayi bandhamillaattha abaa paathayude aadyathe agonistaanithu.
homeostasis.
jaivasamshleshanam.
plaastaidal 2-"sii"-methyl-dii-erithraittol-4-phoosphett (emep) pathayil samanvayippikkunna oru isoprenoid plaant hormon absisic assid (aba); mevalonic aasidil ninnu uruthirinja mungamiyaaya farnessil diphosphatil (efdp) ninnu roopappedunna gadanaaparamaayi bandhapetta seskvittarpeenukalil ninnu vyathyasthamayi, emipiyile sii 40 carotinoidukalude pilarppinu sheshamaan abayude sii 15 nattellu roopappedunnathu. aadyathe prathibaddhamaaya abaa mungamiyaanu siaksantin; vayalaaksaanthin vazhiyulla ensime-catalised epoxidationukaludeyum isomerisationukaludeyum oru parambara, koodaathe oru dioxygenation prathikaranatthiloode sii 40 carotenoidinte avasana villal proximal abaa mungamiyaaya santoxin nalkunnu, athu pinneedu abayilekk kooduthal ooksidais cheyyappedunnu. absisic aldehyde vazhi.
abamin roopakalppana cheyyukayum samanvayippikkukayum vikasippikkukayum pinneedu aadyathe nirddishta abaa biosynthesis inhibittaraayi pettant nedukayum cheythu, ithu abayude endogenous alavu niyanthrikkunnath saadhyamaakkunnu.
nishkriyathvam.
saip 707eiii (pii 450 ensaimukalude oru koottam) vazhi abaye phasic aasidaayi catabolise cheyyaam allengil euridine diphosphate-glucosil transferase (udp-glucosil transferase) enna ensime vazhi glucose konjugeshan (abaa-glucose esttar) vazhi nirjjeevamaakkaam. saip 707 eiii vazhiyulla catabolism abaa homeostasisinu valare pradhaanamaan, aaa jeenukalile mutentukal saadhaaranayaayi abaa biosynthetic jeenukale amithamaayi prakadippikkunna lainukalekkaal uyarnna alavil abaa shekharikkunnu. mannil bakteeriyakalil, vomifoliyol dehydrogenase enna ensime vazhi dehydrovomifoliolic nayikkunna oru badal kaattabolik paatha report cheyyappettittund.
signal cascade.
abayude abhaavathil, phosphatase abii1-insensitteevu1 (ebi1) snf1-maayi bandhapetta protein kainesukalude (upakudumbam 2) (snrke2ezz) pravartthanatthe thadayunnu. pyrabaaktin prathirodham 1 (pair 1), pair 1 polulla membran proteinukal ennivayaal abaye manassilakkunnu. abaa bindingle, pair 1 abiyumaayi bandhippikkukayum thadayukayum cheiyunnu. snurk 2kall inhibitionil ninnu purathuvarumbol, avaa abaa responsive elament-binding factor (eiii. bii. eph) kudumbatthil ninnulla niravadhi transcription gadakangal sajeevamaakkunnu. eiii. bii. eph. ezz pinneedu dhaaraalam jeenukalude aavishkaarathil mattangal varuthunnu. ekadesham 10 sathamaanam sasya jeenukalum abayal niyanthrikkappedunnu karuthappedunnu.
fungazil.
sasyangaleppole, chila fungus speesheesukalkk (udaaharanathinu sercospora rossicola, botritis sineriya, magnaporth oreesa) abaykk endogenous biosynthesis paathayund. fungazil, ithu pradhaanamaaya mva biosynthetic paathayaanennu thonnunnu (sasyangalile abaa biosynthesisinu kaaranamakunna mep paathayekkaal). eee rogakaarikal ulppaadippikkunna abayude oru punk sasyangalude rogaprathirodha prathikaranangale adichamarthuka ennathaanu.
mrugangalil.
spanchukal muthal manushyar ulppedeyulla sasthanikal vareyulla mettaasovaanukalilum abaa kaanapedunnu. nilavil, mrugangalile athinte jaivasamshleshanavum jaivaparamaaya pankum valare kuravaanu. prameham/ponnatthadi, koshajwalana malavisarjanam, rakthapravaham, influvensa anubadha ennivayude elikalude modalukalil sakthamaaya virudha bahyaavishkaara, prameha virudha phalangal undakkaan eiii. bii. eiii aduthide theliyichittundu. mrugangalile niravadhi jaivaparamaaya phalangal neutraceutical allengil pharmacoganostic marunnayi abaye upayogichu padichittundenkilum uthejippikkumbol chila koshangal (macrophageukal polullava) endogenous aayi abaa srishtikkunnu. vividha padanangalil ninnu parasparavirudhamaaya nigamanangalumund, avide chilar veekkam anukoola prathikaranangalkk abaa anivaaryamaanennu avakaashappedunnu, mattullava aanti-inflammatory efakttukal kaanikkunnu. vaidyashaasthraparamaaya gunangalulla niravadhi prakrithidatha padaarthangaleppole, prakrithichikithsayilum abaa janapriyamaayittund. abaykk prayojanakaramaaya jaiva pravarthanangalundennum pala prakrithidatha parihaarangalilum uyarnna alavil abaa adangiyirikkumennum (veetgraas jyoos, pazhangal, pachakkarikal enniva polullava) parayumbol, chila aarogya avakaashavaadangal athishayokthiparamo amithamaya shubhaapthivishwaasamullatho aakam. sasthanikalude koshangalil, peroxisom proliferrator-activated risapttar gaama (ppr gaama) sajeevamakkunnathinulla oru badal samvidaanathinu kaaranamakunna lanthionin synthettes sii-like 2 (lancle 2) ennariyappedunna oru proteine abaa lakshyamidunnu. lancle 2 sasyangalil samrakshikkappedunnu, ithu sasyangalil oru abaa resepteraayum aadyam nirddeshikkappettu, ithu pinneedu velluvilikkapettu.
abaa saandrathayude alavu.
vividha sasyakoshangalil absisic aasidinte saandrata alakkaan niravadhi reethikal sahayikkum. echu. pii. ell. sii, elisa ennivaye adisthaanamaakkiyullathaanu upayogikkunna alavukal. aduthide, vivoyil thalsamayam intra sellular abayude saandrata alakkaan kazhiyunna 2 swatantra frettu probukal vikasippicheduthittundu.