Leucoplasts umsebenzi. leucoplasts Avilable

Enye edume abameli zobukumkani plant kuba phambi kwizisele kwabo izakhi ezikhethekileyo - plastids. Ziquka chloroplasts, chromoplasts kunye leucoplasts, isakhiwo kunye nemisebenzi eza kuxutyushwa kwinqaku lethu.

Yintoni plastids

Organelles ebizwa plastids leeseli zezityalo, umngundo kunye ethile lenyama. Le ithole elirhangqiweyo iimilo ukuba abe isakhiwo semi-elizimeleyo. Bona bayakwazi interconvert omnye komnye. Umzekelo, leucoplasts, isakhiwo kunye nemisebenzi apho utshintsho phantsi kwempembelelo kwelanga ngqo zitshintshele zibe chloroplasts. Abantu abaninzi baye babona ukuba iitapile amatswele zeleneeyut. Oku sisiphumo kukho utshintsho imangalisayo. Kodwa ukusebenzisa imveliso loo ukutya angafanele ngayo. Kunye chloroplasts e amatswele agcinwe ityhefu - le solanine alkaloid. Oku kunokubangela ityhefu kakhulu ukutya kwaye kuyingozi kakhulu ebantwaneni.

Ngexesha lokuvuthwa iziqhamo kunye nemifuno kwakhona kwenzeka interconversion of plastids. Kuphela kulo mzekelo akhiwa leucoplasts chromoplasts emisela umbala kwiindawo ezahlukeneyo zesityalo: mthubi, obomvu, pink, neengubo ezimfusa, njalo-njalo ..

iintlobo plastids

Leucoplasts plastids chromoplasts, chloroplasts zahluke zombini isakhiwo kunye nemisebenzi eyenziwa. Kodwa bonke zidlala indima ebalulekileyo yazo. Ukukwazi ukudlulisela umbala iindawo ezahlukeneyo zesityalo ngenxa yokuba chromoplasts ziqulathe ngombala ezahlukeneyo - colorants.

Corolla zalo eliqaqambileyo izityalo ezininzi - ubungqina wayenza into. Loo umbala ngeentyatyambo ivumba utsala nosasazeko kunye kokukhulelwa olungaphambi ukuyilwa kwiziqhamo.

plastids Green ziqulathe yiklorofili sakhi, nto leyo ebonisa umbala wayo. Ubukho lo mbandela (kunye icarbon dioxide, amanzi kunye nokukhanya kwelanga) efunekayo ngpahmbi ukuhamba kwenkqubo photosynthesis. Xa zawo izityalo iicarbohydrate neoksijini. Esokuqala kubo ngumthombo isondlo, ukukhula kunye nophuhliso. A oxygen gas zonke izidalwa eziphilayo, yibhaktheriya ebantwini, zisetyenziselwa ukuphefumla.

isakhiwo leucoplasts

Leucoplasts ezi organelles enemibala. Zinelungelo imilo ukulenza. inkqubo inwebu e phambili kunokuba nguvumazonke. Imilo ingahluka kwi okubi kuphela xa kukho icytoplasm babo baqale iinkozo starch enkulu ngokwaneleyo. Leucoplasts plastids equlethwe ngekawusi up the main esiqwini sesityalo. Yenza isiseko ulungiso ihlumelo - amatswele, iibhalbhu, rhizomes. leucoplasts umsebenzi futhi luchazwe neempawu ezifana yesakhiwo. Kwezi organelles kwisisu asinakukwazi ukulandisa izondlo ezininzi ezibalulekileyo. Leucoplasts njengoko zonke plastids ezi organelles dvuhmembrannymi. Noko ke, iqokobhe elingaphakathi aluyiyo lunamaqoqo ecacileyo ngaphakathi kwisakhiwo.

Leucoplasts - iiseli eukaryotic. Oku kuthetha ukuba iimolekyuli zabo DNA kukho icytoplasm nadlulisela ulwazi yemfuza eziqulathwe kule core ahombise.

leucoplasts umsebenzi

Ezi plastids izinto ezikhethekileyo. Ngokuxhomekeka kuhlobo, baye bakwazi ukuba nomzi nokulungelelanisa iintlobo ezahlukeneyo izinto zemvelo. Umzekelo, ekudleni starch ziqulathe amyloplasts. Le nto eqhelekileyo ukuba zonke izityalo, njengoko wabumba ukusuka iswekile, ezifunyenwe yi photosynthesis. Imveliso Oleoplasty kunye ivenkile namanqatha. amafutha alulwelo nazo zifumaneka kwezinye iiseli yezityalo kunye kuthiwa-oyile. Proteinoplast zineproteni. Wenza umsebenzi onjalo ke leucoplasts isakhiwo. Ngaphezu koko kufuneka kwisisu imfuyo kunye nokugcinwa kwezinto ezahlukahlukeneyo ukuba ziqulathe enzymes. Ezi ehlanganisa zebhayoloji bayakwazi ukuba kukhawuleziswe reactions imichiza yendalo, kodwa inxalenye iimveliso zabo. Phantsi yempembelelo, umzekelo, elula starch ekudleni glucose polysaccharide kwakheka. Xa kuvela iimeko ezo ezimbi ukuba ukuhamba photosynthesis, waphinda Ndinamathele monomers yaye isetyenziselwa kwiinkqubo ubomi bezityalo.

Baphi leucoplasts

Ekubeni umsebenzi omkhulu leucoplasts - ke beqokelela izinto, le organelles iqulethwe iindawo anquma kunye nenyama kwezityalo. Ingakumbi zizityebi amatswele zamazambane. umfundi ngamnye uyakwazi ukuqhuba indlela esemgangathweni ukuze wesitatshi oko kuqulethwe leucoplasts yayo. Ukuze wenze oku, kufuneka nje ukuba ukwambatha iqhekeza entsha amathontsi ambalwa ayodini. Phantsi impembelelo yayo kule plastids ezingenambala abe umbala osisityebi purple. Ingabonwa phantsi neemicroscope nkqu ukukhulisa eliphantsi.

Ibhalbhu kwisityalo nazo leucoplasts ezininzi. Ngenxa kunikezelo omkhulu wamanzi kunye carbohydrate iingcambu ezinjalo bayakwazi bafuduka ngamaxesha komhlaba kukuhanjiswa wokubalela, iqabaka kunye nobushushu. Ngelo xesha esinyusiweyo yinxalenye encinane kwisityalo uyafa yaye ukubaleka elungisiweyo ihlala iphila. Umzekelo, amahle xa isibini kwiiveki ukuze akhule kwaye ottsvesti. Kwaye ngoko xa ibhalbhu yabo baziqwebele namandla lasekwa ngo iindawo umBoniso eluhlaza izityalo yasentwasahlobo.

They are aziyeke kunye rhizomes. Wonke umntu uyazi ukuba kunzima kangakanani na ukuba balahle ukhula. Yaye abakho ukoyika imbalela enkulu, amagqabi kunye ivele ngaphezu komhlaba. Eyona nto kukuba isityalo ngokwayo iphuhlisa phantsi emhlabeni ngohlobo anquma yokuphuma lungiswa kunye internodes evuthelweyo. Iqulethe a leucoplasts isixa esikhulu, yaye ngenxa yoko nokubonelelwa kwezinto.

Le endosperm kwembewu, imingxunya, ova izityalo eziphezulu enze imisebenzi yawo kungenxa ubukho data plastids.

leucoplasts Origin

Ukubakho leucoplasts ngxi inyama osandul zezityalo eziphilayo yayingaphelele. Kwaye kwasekwa ekuthiwa-proplastids. Ezi zithinteli ezi izandulela zonke ezi organelles. Ekuqaleni, ukuba ibekwe meristem - eli laphu zemfundo izityalo. Proplastids corpuscles ezi obungabonakaliyo ubukhulu ukuya ku-1 micron. Nantso ukuba wonke nje umqokozo le interconversion ezi seli organel zezityalo iqala nabo.

Ngoko ke, lo msebenzi ephambili leucoplasts yokuqaphela, nokwanda kunye nokugcinwa kweentlobo ezahlukeneyo kwezinto eziphilayo eziyimfuneko ukuze ubukho eziphilayo.