Nitrogen fixation nyob rau hauv cov kab mob no yog lub teeb stimulated txheej txheem. Cyanobacteria kho nitrogen tsuas yog nyob rau hauv kev sib xyaw nitrogen tsis muaj xwm txheejthiab nyob rau hauv lub xub ntiag ntawm kev sib xyaw nitrogen qhov chaw cov enzyme nitrogenase tseem repressed uas, zoo ib yam li cov pa oxygen, yog ib qho kev thim rov qab.
Pob cyanobacteria siv nitrogen fixation?
Abstract. Cyanobacteria yog cov kab mob oxygenic photosynthetic uas muaj thoob plaws hauv marine, dej tshiab thiab av av, thiab ntau ntawm lawv yog muaj peev xwm kho atmospheric nitrogen.
Cyanobacteria twg tuaj yeem txhim kho atmospheric nitrogen?
Free-living nitrogen-fixers suav nrog cyanobacteria Anabaena thiab Nostoc thiab genera xws li Azotobacter, Beijerinckia, thiab Clostridium.
Cyanobacteria kho nitrogen yam tsis muaj Heterocyst?
Ntau, tab sis tsis yog tag nrho, non-heterocystous cyanobacteria tuaj yeem kho N2 . Txawm li cas los xij, ob peb hom tuaj yeem kho N2 aerobically. Txawm li cas los xij, cov kab mob no tuaj yeem ua rau muaj txiaj ntsig zoo rau lub ntiaj teb nitrogen voj voog.
Peb txoj kev kho nitrogen yog dab tsi?
Nitrogen fixation yog txheej txheem uas cov pa nitrogen los ntawm cov cua hloov mus rau hauv cov tebchaw sib txawv uas siv tau los ntawm cov nroj tsuag thiab tsiaj txhu. Muaj peb txoj hauv kev uas qhov no tshwm sim: ua ntej, los ntawm xob laim; thib ob, los ntawm kev lag luam; Thaum kawg, los ntawm cov kab mob nyob hauv av
