Leej twg photoreceptor tswj qhov qhib thiab kaw ntawm stomata?
Leej twg photoreceptor tswj qhov qhib thiab kaw ntawm stomata?

Video: Leej twg photoreceptor tswj qhov qhib thiab kaw ntawm stomata?

Video: Leej twg photoreceptor tswj qhov qhib thiab kaw ntawm stomata?
Video: FPV | Хобби, способное изменить ТВОЮ жизнь 2024, Kaum ib hlis
Anonim

Muaj ob hom photoreceptor Cov proteins hauv cov nroj tsuag - Phytochromes thiab Blue light receptors. Phytochromes nqus lub teeb liab thiab lub teeb liab nyob deb thiab pab cov nroj tsuag kom nkag siab txog kev hloov pauv raws caij nyoog nyob rau hmo ntuj, lossis photoperiod, yog li ntawd tswj qhov qhib thiab kaw ntawm stomata.

Tsis tas li ntawd, dab tsi tswj qhov qhib thiab kaw ntawm stomata?

Cov cell tiv thaiv yog cov cell nyob ib puag ncig stoma . Lawv pab tswj tus nqi ntawm transpiration los ntawm qhib thiab kaw tus lub plab . Nyob rau hauv daim duab B, lub hlwb tiv thaiv tau poob dej, uas ua rau cov hlwb ua flaccid thiab cov qhib lub plab kaw. Qhov no yuav tshwm sim thaum cov nroj tsuag tau poob dej ntau dhau.

Tom qab ntawd, lo lus nug yog, qhov twg cov tshuaj hormones yog lub luag haujlwm rau qhib thiab kaw lub stomata? abscisic acid

Thiab cov lus nug yog, ua li cas stomata qhib thiab kaw poov tshuaj?

Qhov no ua rau cov hlwb tiv thaiv khoov deb ntawm ib leeg, yog li ntawd qhib tus lub plab . Piv txwv li, thaum guard cells poob poov tshuaj ions, dej diffuses tawm ntawm lub hlwb los ntawm osmosis. Raws li cov dej tawm hauv lub hlwb, lawv dhau los ua flaccid thiab qis dua, uas kaw qhov lub plab nruab nrab ntawm lawv.

Yuav ua li cas tswj qhov qhib thiab kaw ntawm stomata pores thiab ua li cas?

Qhib thiab kaw ntawm stomata tshwm sim vim turgor hloov nyob rau hauv guard cells. Thaum lub cev tiv thaiv yog turgid, plab pore yog qhib thaum nyob rau hauv tej yam kev mob flaccid, lub mob plab aperture. Guard cell yog qhib thiab kaw tus pores ntawm a lub plab . lawv cell qhib tus pores los ntawm stretching thiab kaw los ntawm shrinking.

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