Qhov sib txawv tseem ceeb ntawm cov kab mob ntsuab thiab ntshav ntshav yog cov kab mob sulfur ntsuab yog ib pawg ntawm cov kab mob sulfur uas tshwm sim daj-ntsuab, ntsuab-txiv kab ntxwv lossis xim av xim thaum cov kab mob ntshav sulfur yog ib pawg ntawm cov kab mob proteobacteria uas tshwm sim hauv xim liab los yog xim liab-xim av.
Cyanobacteria yog ib pawg ntawm cov kab mob uas tuaj yeem ua photosynthesis. Lawv ntes lub teeb thiaj li tsim tau lawv cov zaub mov. Raws li ib tug by-product, lawv tso oxygen rau ib puag ncig. Yog li ntawd, hom photosynthesis no hu ua oxygenic photosynthesis. Muaj ob peb lwm pawg ntawm cov kab mob uas ua rau photosynthesis, tab sis lawv tsis tsim oxygen. Hom photosynthesis no hu ua anoxygenic photosynthesis. Cov kab mob ntsuab sulfur thiab ntshav sulfur kab mob yog ob pawg xws li. Lawv nqus lub teeb ntawm bacteriochlorophylls thiab tsim ATP. Tab sis lawv tsis siv dej ua ib qho khoom siv hluav taws xob. Hloov chaw, lawv siv sulfide thiab tsim cov granules ntawm cov ntsiab lus sulfur. Yog li ntawd, lawv tsis tso oxygen.
Cov kab mob Ntsuab Sulfur yog dab tsi?
Cov kab mob ntsuab sulfur yog ib pawg ntawm cov kab mob photoautotrophic. Lawv yog obligate anaerobes uas muaj feem xyuam nrog bacteroidetes. Tsis tas li ntawd, cov kab mob ntsuab sulfur tuaj yeem hloov mus rau ntau qhov nqaim ntawm lub zog-txwv tsis pub muaj. Lub ecology ntawm cov kab mob ntsuab sulfur zoo ib yam li cyanobacteria. Cov kab mob no tsis yog txav. Lawv feem ntau yog spheres, rods, thiab kauv daim ntawv. Cov kab mob ntsuab sulfur belongs rau tsev neeg Chlorobiaceae thiab Chlorobium, Chlorobaculum, Prosthecochloris, thiab Chloroherpeton yog ob peb hom kab mob ntsuab sulfur.
Daim duab 01: Cov Kab Mob Ntsuab Sulfur
Cov kab mob ntsuab sulfur muaj bacteriochlorophyll (BChl) c, d, lossis e, ntxiv rau BChl a thiab chlorophyll a. Lawv ua cov anoxygenic photosynthesis. Yog li ntawd, lawv hloov lub teeb lub zog rau hauv ATP yam tsis muaj oxygen. Tsis tas li ntawd, cov tshuaj tiv thaiv lub teeb nyob ntawm qhov tsis sib xws, yog li lawv tsim NADPH. Photosynthetic cov tshuaj tiv thaiv chaw lossis RC complex ntawm cov kab mob ntsuab sulfur qhia cov qauv thiab kev ua haujlwm zoo sib xws nrog lub photosystem 1 complex ntawm cov nroj tsuag thiab cyanobacteria.
Cov kab mob ntshav qab zib yog dab tsi?
Purple sulfur kab mob yog lwm pab pawg kab mob uas muaj peev xwm ua anoxygenic photosynthesis. Lawv yog ib pawg ntawm proteobacteria uas yog gram-negative. Cov kab mob no yog anaerobic lossis microaerophilic. Lawv feem ntau nyob hauv qhov dej kub los yog dej khov. Lawv tsis tuaj yeem nyob hauv ib puag ncig oxygenated. Txhawm rau tswj cov kab mob ntshav qab zib hauv cov dej hauv lub cev, cov pa oxygen concentration yuav tsum tau nce ntxiv. Cov kab mob no siv hydrogen sulphide ua tus neeg sawv cev txo qis dua dej. Yog li ntawd, lawv tsis tsim oxygen. Lawv tsim granules ntawm elemental sulfur.
Daim duab 02: Ntshav thiab Ntsuab Sulfur Bacteria
Vim cov kab mob ntshav qab zib yog nyob ntawm cov sulfides rau photosynthesis, siab sulfide concentrations thiab siab ammonia concentrations tuaj yeem txhawb kev loj hlob ntawm cov kab mob ntsuab sulfur. Muaj ob tsev neeg ntawm cov kab mob ntshav sulfur. Lawv yog Chromatiaceae thiab Ectothiorhodospiraceae.
Dab tsi zoo sib xws ntawm Ntsuab thiab Ntshav Sulfur Bacteria?
- Ob leeg cov kab mob ntsuab sulfur thiab cov kab mob ntshav sulfur muaj peev xwm ua tau cov tshuaj anoxygenic photosynthesis.
- Lawv tsis tsim oxygen thaum lub sijhawm photosynthesis.
- Ob leeg tuaj yeem ntes lub teeb thiab tsim ATP.
- Lawv muaj cov pigments photosynthetic hu ua bacteriochlorophylls.
- Lawv siv hydrogen sulphide ua tus txo qis.
- Yog li, lawv yog qhov tseem ceeb ntawm lub voj voog Sulfur.
- Ob leeg yog kab mob Gram-negative.
Dab tsi txawv ntawm Ntsuab thiab Ntshav Sulfur Bacteria?
Cov kab mob ntsuab sulfur thiab cov kab mob ntshav sulfur yog ob pawg ntawm cov kab mob sulfur uas tau txais cov tshuaj anoxygenic photosynthesis. Ntsuab sulfur kab mob tshwm nyob rau hauv yellowish-ntsuab, ntsuab-txiv kab ntxwv los yog xim av, thaum cov kab mob ntshav sulfur tshwm nyob rau hauv cov ntshav los yog reddish-xim av. Yog li, qhov no yog qhov sib txawv ntawm cov kab mob ntsuab thiab ntshav ntshav sulfur.
Cov hauv qab no qhia txog qhov sib txawv ntawm cov kab mob ntsuab thiab ntshav ntshav sulfur nyob rau hauv daim ntawv tabular rau ib sab sib piv.
Summary – Ntsuab vs Purple Sulfur Bacteria
Cov kab mob ntsuab sulfur thiab cov kab mob ntshav sulfur yog ob pawg ntawm cov kab mob uas tau txais cov tshuaj anoxygenic photosynthesis. Yog li ntawd, lawv yog cov kab mob photoautotrophic. Ntsuab sulfur kab mob tshwm nyob rau hauv yellowish-ntsuab los yog ntsuab-txiv kab ntxwv, los yog xim av xim av. Lawv muaj feem cuam tshuam nrog bacteriodetes. Ntshav sulfur kab mob tshwm nyob rau hauv cov ntshav los yog xim av xim, thiab lawv yog cov proteobacteria. Tsis tas li ntawd, cov kab mob ntsuab sulfur nqus lub teeb loj dua li cov kab mob ntshav sulfur. Yog li, qhov no qhia txog qhov sib txawv ntawm cov kab mob ntsuab thiab ntshav ntshav sulfur.
