Leucoplasts muaj nuj nqi. Avilable leucoplasts

Ib tug ntawm txuam rau cov neeg sawv cev ntawm cov nroj tsuag nceeg vaj yog muaj nyob rau hauv lawv lub hlwb ntawm tshwj xeeb lug - plastids. Lawv muaj xws li chloroplasts, chromoplasts thiab leucoplasts, qauv thiab kev khiav dej num ntawm cov uas yuav tsum tau tham nyob rau hauv peb tsab xov xwm.

Yuav ua li cas yog lub plastids

Organelles hu ua plastids ntawm cog hlwb, fungi thiab ib co protozoa. Qhov no plab hlaub npawv nrhiav uas muaj ib tug semi-siv yooj yim qauv. Lawv yog cov tau interconvert ib leeg. Piv txwv li, leucoplasts, qauv thiab kev khiav dej num ntawm cov uas hloov nyob rau hauv tus ntawm ncaj qha tshav ntuj yog hloov dua siab tshiab rau hauv chloroplasts. Muaj coob tus tau pom tias qos tubers zeleneeyut. Qhov no yog qhov tshwm sim ntawm xws li ib amazing transformation. Tab sis yuav siv xws li ib tug khoom nyob rau hauv khoom noj khoom haus yog tsis nqi nws. Ua ke nrog chloroplasts nyob rau hauv tubers cia tshuaj lom - cov alkaloid solanine. Nws yuav ua rau mob loj heev cov zaub mov raug kuab lom thiab yog tshwj xeeb tshaj yog txaus ntshai rau cov me nyuam.

Thaum lub sij hawm ripening ntawm txiv hmab txiv ntoo thiab zaub kuj tshwm sim interconversion ntawm plastids. Tsuas yog nyob rau hauv cov ntaub ntawv no yog tsim los ntawm leucoplasts chromoplasts txiav txim cov xim ntawm ntau qhov chaw ntawm cov nroj tsuag: daj, liab, liab, ntshav, thiab thiaj li nyob ..

hom plastids

Leucoplasts plastids chromoplasts, chloroplasts txawv nyob rau hauv ob lub qauv thiab cov kev khiav dej num ua. Tab sis lawv tag nrho cov ua si ib qho tseem ceeb thiab irreplaceable lub luag hauj lwm. Muaj peev xwm impart xim rau ntau qhov chaw ntawm cov nroj tsuag vim lub fact tias chromoplasts muaj ntau yam pigments - colorants.

Corolla kaj petals ntawm feem ntau cov nroj tsuag - raug pov thawj ntawd. Xws li ib tug xim nrog paj ntxhiab attracts kab rau pollination thiab fertilization uas precedes lub tsim ntawm lub txiv hmab txiv ntoo.

Ntsuab plastids muaj cov xim chlorophyll, uas txiav txim nws cov xim. Lub xub ntiag ntawm no cov ntaub ntawv uas (nrog rau cov pa roj carbon dioxide, dej thiab tshav ntuj) yog ib tug yuavtsum tau kawm uantej rau cov khiav ntawm lub photosynthesis txheej txheem. Nyob rau hauv nws cov hoob kawm cov nroj tsuag tsim carbohydrates thiab oxygen. Tus thawj yog rau lawv ib qhov chaw ntawm kev noj haus, kev loj hlob thiab kev loj hlob. Ib cov pa oxygen tag nrho cov nyob beings, los ntawm cov kab mob rau tib neeg, yog siv rau cov ua tsis taus pa.

qauv leucoplasts

Leucoplasts yog tsis muaj kob organelles. Lawv muaj ib tug kheej kheej zoo. membrane system nyob rau hauv tsim es weakly. Tus duab yuav txawv nyob rau hauv cov tsis ncaj ncees lawm tsuas yog thaum nyob rau hauv lawv cov cytoplasm pib tsim ib tug txaus loj cov hmoov txhuv nplej nplej. Leucoplasts plastids muaj nyob rau hauv stocking lub ntsiab cog cov ntaub so ntswg. Nws cov ntaub ntawv lub hauv paus rau kev hloov kho mus rau qhov tua - tubers, qhov muag teev, rhizomes. leucoplasts muaj nuj nqi thiab hais tseg los ntawm tej nta ntawm lawv cov qauv. Nyob rau hauv cov organelles kab noj hniav yuav noog ntau nqi as-ham. Leucoplasts raws li tag nrho plastids yog organelles dvuhmembrannymi. Txawm li cas los, lub puab plhaub tsis tsim cov protrusions hauv kev teeb tsa.

Leucoplasts - eukaryotic hlwb. Qhov no txhais tau tias nyob rau hauv lawv cov cytoplasm DNA molecules uas nqa caj ntaub ntawv muaj nyob rau hauv lub dai kom zoo nkauj cov tub ntxhais.

leucoplasts muaj nuj nqi

Cov plastids yog tshwj xeeb. Nyob ntawm seb lub hom, lawv yuav tau mus noog thiab coj los ua ke ntau hom ntawm cov organic tshuaj. Piv txwv li, carbohydrate cov hmoov txhuv nplej muaj amyloplasts. Qhov no cov ntaub ntawv uas yog raug rau tag nrho cov nroj tsuag, raws li tsim los ntawm qabzib, tau los ntawm photosynthesis. Oleoplasty zaub thiab khw muaj roj. Kua rog no tseem nyob hauv ib co cog hlwb thiab yog hu ua cov roj. Proteinoplast muaj proteins. Ua xws nuj nqi yog cov qauv leucoplasts. Tsis tas li ntawd cov kab noj hniav yuav tsum tau rau Tshuag thiab cia ntawm ntau yam tshuaj lawv muaj enzymes. Cov lom catalysts yuav tau leeb tej yam ntuj tso tshuaj, tab sis yog tsis yog ib feem ntawm lawv cov khoom. Nyob rau hauv tus ntawm, piv txwv li, ib tug yooj yim carbohydrate zib polysaccharide cov hmoov txhuv nplej yog tsim. Thaum tej yam kev mob tshwm sim uas yog unfavorable rau cov ndlwg ntawm photosynthesis, nws dua cleaved rau monomers thiab siv tau rau tsob nroj lub neej muaj dab.

Qhov twg yog leucoplasts

Txij li thaum lub ntsiab muaj nuj nqi leucoplasts - yog tsub zuj zuj ntawm tshuaj, cov organelles yog muaj nyob rau hauv lub nyeem tas thiab fleshy qhov chaw ntawm cov nroj tsuag. Tshwj xeeb yog nplua nuj nyob rau hauv qos yaj ywm tubers. Txhua tus menyuam kawm yog tau kev zoo tshuaj tiv thaiv rau cov hmoov txhuv nplej uas yog muaj nyob rau hauv nws cov leucoplasts. Ua li no, cia li xav muab tso rau hauv ib tug tshiab hlais ntawm ib tug ob peb tee ntawm iodine tov. Nyob rau hauv nws cov hwj huam no tsis muaj kob plastids tau ib tug nplua nuj liab doog xim. Lawv yuav pom nyob rau hauv lub tshuab kuaj kab txawm nyob rau hauv uas tsis muaj magnification.

Lub teeb ntawm lub nroj tsuag yog tseem muaj ntau leucoplasts. Vim lub loj mov dej thiab carbohydrates xws keeb kwm yuav tau mus underground unfavorable sij hawm ntawm drought, te thiab tshav kub. Nyob rau tib lub sij hawm kom ib tug me me ib feem ntawm cov nroj tsuag tuag thiab qhov hloov txoj kev khiav tseem zaum. Piv txwv li, tulips nyob rau hauv ib tug ob peb lub lis piam sij hawm kom loj hlob thiab ottsvesti. Thiab ces nyob rau hauv lawv cov teeb noog carbohydrates tsim thaum lub sij hawm photosynthesis ntsuab seem ntawm caij nplooj ntoos hlav nroj tsuag.

Lawv yog cov tsis muaj kev zam thiab rhizomes. Sawv daws yeej paub yuav ua li cas nyuaj nws yog los rhuav tshem ntawm cov nroj tsuag. Lawv yog cov tsis txawm ntshai loj heev drought, cov nplooj thiab rov tshwm sim saum toj no rau hauv av. Qhov no yog hais tias cov nroj tsuag nws tus kheej muaj nyob rau hauv lub hauv av nyob rau hauv daim ntawv ntawm ib tug nyeem tas hloov kev khiav nrog elongated internodes. Nws muaj ib tug tseem ceeb npaum li cas leucoplasts, thiab chaw pib lub mov ntawm tshuaj.

Lub endosperm ntawm noob, fungal spores, ova dua nroj tsuag ua lawv zog nws yog vim lub xub ntiag ntawm plastids cov ntaub ntawv.

Keeb kwm leucoplasts

Qhov kuaj pom leucoplasts tseem nyob rau hauv lub embryonic cov ntaub so ntswg ntawm tsob nroj kab mob tsis txhij. Thiab lawv tsim lub thiaj li hu ua proplastids. Cov lug yog cov precursors ntawm tag nrho cov organelles. Chiv, lawv muaj nyob rau hauv lub meristem - txoj kev kawm ntaub nroj tsuag. Proplastids corpuscles yog me me nyob rau hauv loj li 1 micron. Qhov ntawd yog qhov tseem saw ntawm cov interconversion ntawm cov organel cog hlwb pib nrog lawv.

Yog li, lub ntsiab muaj nuj nqi yog leucoplasts synthesis, tsub zuj zuj thiab cia ntawm ntau hom ntawm cov organic tshuaj tsim nyog rau lub hav zoov uas muaj sia nyob.