Video: Tus kab mob ash dieback yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hymenoscyphus fraxineus yog Ascomycete fungus uas ua rau ash tuag , mob fungal kab mob ntawm tshauv ntoo nyob rau hauv cov teb chaws Europe characterized los ntawm nplooj poob thiab crown tuag hauv cov ntoo uas muaj kab mob. Cov fungus tau piav qhia thawj zaug hauv xyoo 2006 raws li lub npe Chalara fraxinea.
Tsis tas li ntawd, cov cim qhia ntawm tshauv dieback yog dab tsi?
Cov tsos mob ntawm tshauv dieback muaj xws li; Ntawm nplooj: Dub blotaws tshwm sim, feem ntau ntawm cov nplooj hauv paus thiab midrib. Qhov cuam tshuam nplooj wilt. Ntawm stems: me me lens-puab kab mob los yog necrotic me ntsis tshwm rau ntawm cov tawv ntoo ntawm stems thiab ceg thiab loj tuaj rau perennial cankers.
Tom qab ntawd, lo lus nug yog, puas tshauv dieback tua tsob ntoo? Ash tuag yog tshwm sim los ntawm cov fungus Hymenoscyphus fraxineus, uas yog los ntawm Asia. Nyob rau hauv nws haiv neeg, nws ua rau me ntsis kev puas tsuaj rau ntoo , tab sis thaum cov fungus tau qhia rau Tebchaws Europe txog 30 xyoo dhau los, nws tau ua rau muaj kev puas tsuaj loj heev. Kev kwv yees tsis ntev los no qhia tias tus kab mob tuaj yeem ua tau tua mus txog 70% ntawm ntoo tshauv.
Ua raws li qhov no saib, ash dieback ua li cas?
Ash tuag yog ib tug mob hnyav ntawm tshauv ntoo tshwm sim los ntawm fungus Hymenoscyphus fraxineus (Nws siv los hu ua Chalara fraxinea). Tus kab mob ua rau nplooj poob thiab crown tuag hauv cov ntoo cuam tshuam thiab ua tau coj mus rau tsob ntoo tuag.
Tus kab mob ash dieback tuaj qhov twg?
Ash tuag Kev tshwm sim Lub cev nce ntxiv ntawm cov pov thawj qhia tias ash tuag - tus kab mob uas tau tua ntoo thoob plaws teb chaws Europe thiab tam sim no nyob rau hauv teb chaws Aas Kiv - keeb kwm nyob rau hauv Nyiv. Qee cov kws tshawb fawb hais tias cov fungus tam sim no ravaging ntoo thoob plaws teb chaws Europe yog tib yam li ib haiv neeg los ntawm Nyiv.
Pom zoo:
Tus kab mob puas yog kab mob multicellular?
Cov kab mob tsis raug cais raws li cov hlwb thiab yog li ntawd tsis muaj unicellular los yog multicellular kab mob.Viruses muaj genomes uas muaj xws li DNA los yog RNA, thiab muaj cov piv txwv ntawm cov kab mob uas yog ob leeg-stranded los yog ib leeg-stranded
Dab tsi yog cov kab mob piav qhia cov kab mob ntawm tes hauv kev nthuav dav?
Cov kab mob yog cov prokaryotes, tsis muaj cov nuclei zoo thiab cov kab mob sib txuas ua ke, thiab nrog cov chromosomes tsim los ntawm ib lub voj voog DNA kaw. Lawv tuaj nyob rau hauv ntau yam duab thiab ntau thiab tsawg, los ntawm feeb spheres, cylinders thiab kauv threads, rau flagellated rods, thiab filamentous chains
Puas yog cov kab mob unicellular kab mob?
Tus Kab Mob Qhov Twg Zoo? Cov kab mob tsis raug cais raws li cov hlwb thiab yog li tsis yog unicellular lossis multicellular kab mob. Cov kab mob muaj cov genomeshat muaj xws li DNA lossis RNA, thiab muaj cov piv txwv ntawm cov kab mob uas yog ob leeg-stranded orsingle-stranded
Cov kab mob puas yog ib hom kab mob ntawm tes?
Teb thiab piav qhia: Cov kab mob no tsis suav tias yog cov cell nyob thiab yog li ntawd tsis yog ib leeg-celled lossis ntau-celled. Lawv tsuas yog suav hais tias yog cov plhaub protein
Tus qauv qauv yog dab tsi Qhov txawv ntawm tus qauv qauv thiab tus qauv molecular yog dab tsi?
Cov mis mos molecular siv cov cim tshuaj thiab cov ntawv sau npe los qhia cov naj npawb ntawm cov atoms sib txawv hauv cov molecule lossis compound. Ib qho empirical formula muab qhov yooj yim tshaj plaws, tag nrho tus lej piv ntawm atoms hauv ib qho chaw. Cov qauv qauv qhia txog kev sib koom ua ke ntawm cov atoms hauv cov molecule