Qhov twg yog ethylene tsim nyob rau hauv cov nroj tsuag?

Video: Qhov twg yog ethylene tsim nyob rau hauv cov nroj tsuag?

2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17

Ethylene yog tsim tawm los ntawm qhov tseem ceeb ntawm txhua qhov chaw siab dua nroj tsuag , suav nrog nplooj, stems, cag, paj, txiv hmab txiv ntoo, tubers, thiab noob. Ethylene ntau lawm yog tswj los ntawm ntau yam kev loj hlob thiab ib puag ncig yam.

Tsis tas li ntawd, ethylene tsim nyob rau hauv cov nroj tsuag li cas?

Ethylene yog tsim tawm nyob rau hauv tag nrho cov siab nroj tsuag thiab yog tsim tawm los ntawm methionine nyob rau hauv tag nrho cov ntaub so ntswg. ATP thiab dej ntxiv rau methionine ua rau poob ntawm peb phosphates thiab S-adenosyl methionine. 1-amino-cyclopropane-1-carboxylic acid synthase (ACC-synthase) pab txhawb rau ntau lawm ACC los ntawm SAM.

Ib sab saum toj, dab tsi txhawb kev tso tawm ntawm ethylene? Ethylene thiab Auxin Qhov kev ua ntawm ethylene ntawm nplooj loj hlob tuaj yeem yog auxin-dependent lossis auxin-independent. Hormonal kev sib koom tes yog ib qho tseem ceeb, uas tswj cov txheej txheem ntawm nplooj. Auxin induces ethylene ntau lawm, thiab ntau qhov cuam tshuam ntawm exogenous auxins yog, qhov tseeb, ethylene cov lus teb (Abeles li al., 1992).

Ntawm no, ethylene cuam tshuam li cas rau kev loj hlob ntawm cov nroj tsuag?

Ethylene cuam tshuam ob lub kev loj hlob thiab kev loj hlob ntawm nroj tsuag [4]. Hais txog kev loj hlob, ethylene feem ntau suav hais tias yog 'kev laus' cov tshuaj hormones, raws li nws nrawm thiab qee zaum xav tau rau cov txheej txheem xws li ripening, senescence, thiab abscission.

Lub luag haujlwm tseem ceeb ntawm ethylene yog dab tsi?

Ethylene ua haujlwm raws li cov tshuaj hormones hauv cov nroj tsuag. Nws ua ntawm kab nyob thoob plaws hauv lub neej ntawm cov nroj tsuag los ntawm stimulating los yog tswj lub ripening ntawm txiv hmab txiv ntoo , qhib ntawm paj , thiab abscission (los yog shedding) ntawm nplooj.

Pom zoo:

Dab tsi induces ethylene tsim nyob rau hauv cov nroj tsuag?

Environmental thiab biological triggers ntawm ethylene Environmental cues xws li dej nyab, drought, chilling, mob, thiab pathogen nres yuav induce ethylene tsim nyob rau hauv cov nroj tsuag. Nyob rau hauv dej nyab, cov hauv paus hniav raug kev txom nyem los ntawm tsis muaj oxygen, los yog anoxia, uas ua rau lub synthesis ntawm 1-aminocyclopropane-1-carboxylic acid (ACC)

Cov nroj tsuag nyob qhov twg ntawm cov khoom noj khoom haus?

Cov Neeg Tsim Nyog Cov Nroj Tsuag yog qhov pib ntawm txhua qhov khoom noj uas cuam tshuam nrog lub hnub. Txhua lub zog los ntawm Lub Hnub thiab cov nroj tsuag yog cov uas ua zaub mov nrog lub zog ntawd. Lawv siv cov txheej txheem ntawm photosynthesis. Nroj tsuag kuj ua kom muaj lwm cov as-ham rau lwm yam kab mob noj

Nyob rau hauv cov nroj tsuag twg photosynthesis tshwm sim nyob rau hauv qia es tsis nyob rau hauv nplooj?

1 Teb. Nyob rau hauv cov nroj tsuag photosynthesis tshwm sim nyob rau hauv chloroplasts. Chloroplast tuaj yeem nyob hauv lub hlwb ntawm cov txiv hmab txiv ntoo, stems, tab sis feem ntau ntawm tag nrho cov nplooj. Hauv qee qhov succulents (xws li cacti), lub ntsiab photosynthetic kev ua haujlwm yog txuam nrog lub qia

Cov qauv twg tso cai rau cov pa roj carbon dioxide ntws mus rau hauv cov nroj tsuag?

Stomata (Yog lawm! Stomata yog microscopic pores nyob rau saum npoo ntawm nplooj uas cia carbon dioxide nyob rau hauv thiab oxygen thiab dej vapor tawm