CAM cov nroj tsuag yog dab tsi thiab lawv qhov zoo dua yog dab tsi?
CAM cov nroj tsuag yog dab tsi thiab lawv qhov zoo dua yog dab tsi?

Video: CAM cov nroj tsuag yog dab tsi thiab lawv qhov zoo dua yog dab tsi?

Video: CAM cov nroj tsuag yog dab tsi thiab lawv qhov zoo dua yog dab tsi?
Video: Ke hlub yog dab tsi? 2024, Kaum ib hlis
Anonim

Crassulacean Acid Metabolism: CAM ) muaj qhov zoo ntawm qhov tseem ceeb tshem tawm evapotranspiration los ntawm a nroj tsuag stomata (dej poob los ntawm kev sib pauv roj) thaum lub sij hawm tus hnub, tso cai CAM cov nroj tsuag kom ciaj sia nyob rau hauv inhospitable climates qhov twg dej poob yog ib tug loj limiting yam rau cog kev loj hlob

Yog li ntawd, CAM cog piv txwv yog dab tsi?

Piv txwv ntawm CAM Nroj tsuag . Tshwj xeeb piv txwv ntawm CAM cov nroj tsuag yog jade cog (Crassula argentea), Aeonium, Echeveria, Kalanchoe, thiab Sedum ntawm tsev neeg Crassulaceae, pineapple (Ananas comosus), Spanish moss (Tillandsia usneoides), cacti, orchids, Agave, thiab siv quav ciab. cog (Hoya carnosa, tsev neeg Apocynaceae).

Kuj Paub, lub luag haujlwm ntawm CAM cog yog dab tsi? CAM cov nroj tsuag ib ntus cais carbon fixation thiab Calvin voj voog. Cov pa roj carbon dioxide diffuses rau hauv nplooj thaum hmo ntuj (thaum lub stomata qhib) thiab tsau rau hauv oxaloacetate los ntawm PEP carboxylase, uas txuas cov pa roj carbon dioxide rau peb-carbon molecule PEP.

Xav txog qhov no, qhov zoo thiab qhov tsis zoo ntawm CAM photosynthesis yog dab tsi?

A qhov tsis zoo rau CAM cov nroj tsuag yog tias lawv feem ntau muaj qis photosynthetic muaj peev xwm, kev loj hlob qeeb, thiab muaj peev xwm sib tw qis vim lawv photosynthetic Cov nqi raug txwv los ntawm lub tshuab nqus tsev vacuolar thiab los ntawm cov nqi ATP ntau dua, zoo ib yam li cov C4 hom.

Dab tsi yog qhov tshwj xeeb ntawm CAM cov nroj tsuag?

CAM - luv luv rau "Crassulacean Acid Metabolism" - yog ib txoj hauv kev kho cov pa roj carbon monoxide hloov zuj zus los ntawm qee qhov nroj tsuag nyob rau hauv qhuav xwm txheej. Feem ntau nroj tsuag qhib lawv stomata thaum nruab hnub vim hais tias yog thaum lub zog tau txais los ntawm lub hnub. Lub zog ntawm lub hnub yog sau los ntawm chloroplasts thiab siv los ua ATP thiab NADPH.

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