Mumunda wecell biology uye botany pane zvakawanda kutaura nezve iyo caspary bhendi uye kukosha kwayo. Iko kuomarara kwemasero madziro anotamba chinzvimbo chakakosha mune yekutsigira matukisi emidziyo yevascular uye mune imwe algae. Isu tinoziva kuti rusero rusvingo runoumbwa ne lignin uye suberin uye kuti inobatsira kuchengetedza chirimwa. Iyo Caspary bhendi inoumbwa panguva imwecheteyo seyekutanga maseru maseru mumudzi wekutanga uye kubva ipapo wakakosha kwazvo mukusimudzira kwemuti.
Muchikamu chino tiri kuzokuudza zvese zvaunoda kuti uzive nezve kuumbwa uye kukosha kwechikwata cheCaspary.
Mhando huru
Isu tinoziva kuti iyo endodermis yemasero masvingo ane ukobvu, kuomarara, kusagadzikana kusagadzikana kunobatsira kuchengetedza maseru ezvirimwa. Kuwedzera kwemaseru uye akapinduka maseru maseru kunokonzerwa nema polymers echisikigo anozivikanwa seCaspary band. Inoita chinzvimbo chakakosha mune yekutsigira matukisi emidziyo yemidzi uye mamwe algae. Kune bhendi mune yega yega sero rakapindirwa ne organic zvinhu kana ma polymers uye inoratidza musiyano mukuru pakati pemadziro ekutanga emasero.
Iyo Caspary bhendi inotambanudza kumadziro ese nekusaenderera. Ndokunge, zvisingaite panguva imwe chete mumasero ese endodermis. Zita rayo rinobva mukugadzirwa kwerudzi rwemvura isina mvura iyo yaunogadzira. Izvo zvinotanga nekuiswa kwezvinhu zve phenolic uye zvine mafuta pamadziro eiyo maseru ekupedzisira anopedzisira ave bhandi rinobatana neplasma membrane kuwedzera ukobvu hwayo. Tinogona kucherechedza chikwata cheCaspary kuburikidza nemaikorosikopu uchishandisa dhayi yezvakaberekwa inonzi Safranin. Iri bhendi rinogona kunzi ibhandi uko iko kwekutanga madziro akavakirwa.
Caspary bhendi basa
Ngationei kuti basa reCaspary bhendi chii. Iyo inoumbwa kazhinji pe suberin uye inogadzira chinoshandura chimiro chinoshanda sedziviriro pakati pezvirimwa nharaunda. Tinoziva kuti zvirimwa zvinoda dziviriro yakati kuti kwete kukuvadzwa nemasikirwo echisikigo aripo munharaunda. Uye zvakare, rimwe remabasa aro kupindira mukutakurwa kwemvura uye maion kuburikidza neapoplast yemudzi. Izvo zvakare zvinotadzisa izvo zvinhu kubva kuyerera nepakati nepakati uye zvinomanikidza iyo yekumukati kutakura nenzira yakapusa.
Suberin inoumbwa nehydroxy, epoxy, uye dicarboxylic fatty acids. Aya mafuta acids anozadza nzvimbo yechikamu chesekunze pane parutivi rwemasero emiti. Ndokunge, inovhara kufamba kwezvinhu pakati pemadziro eiyo endodermis uye mvura kubva muvhu inoguma ichidarika ne cytoplasm. Nenzira iyi, inonakidza nzvimbo yekusarudzika inogadzirirwa chirimwa. Aya ndiwo mashandiro anoita chirimwa kudzora kuyerera kweion, kudzora kupinda kwemvura uye nezvimwe zvinhu zvemamineral.
Kana tichienda kune endodermis yesero, tinogona kuona kuti ndiyo yega sero dura rinodzivirira kupfuurwa kwezvinhu kubva muvhu kuenda kumasumbu etsinga. Iyo endodermis yakafukidzwa nekortex uye kunyangwe iyo ioni yezvinhu inogona kutapurika nyore pakati peiyo rhizodermis neiyo vascular cylinder, haigone kuwana yekupedzisira. Naizvozvo, iyo nzira ndiyo simiti syplast kana cytoplasm ye Epidermis.
Caspary bhendi uye kutakura kwemvura
Mumiti mizhinji, mvura yakapinda mumidzi zvakasununguka. Izvo hazvidikanwe kuve nekuwedzera kwekushandisa kwesimba kuti mvura ipinde nemidzi. Nekudaro, kufamba kwemvura kuburikidza neyakagwamba uye neyakaganhurwa mukati mayo inoshandisa simba rakawanda uye kuita maitiro akasiyana siyana. Kufamba kwemvura ku xylem kunogona kuitika nenzira mbiri: apoplast uye syplast. Chikwata cheCaspary chiripo kune vese. Tiri kuzodzidza zvakadzama ndidzo nzira mbiri idzi dzinowanikwa neCaspary band:
Apoplast nzira
Ndiyo nharaunda yemuti iyo isingagare nepropoplast. Mukati mawo mune nzvimbo dzisina chinhu sezviri pachena dziri pakati pemasero emadziro uye pakati pemasero akasiyana. Iyo apoplast inoumba imwe yenzvimbo dzekuwana dzemvura uye zvimwe zvinhu zvinosanganiswa mukati mechirimwa. Iyi nzira inoshanda senzira yemuchina we carbon dioxide kune iyo chloroplast. kubatsira pakugadzika kabhoni panguva yekuita photosynthesis. Ivo zvakare vanopindira mushure mekushomeka kwemuti kune akasiyana phytopathogenic zvipenyu zvinogona kusimbisa maseru metabolism.
Inofanirwa kutariswa kuti nzvimbo dziri pakati pemaseru maseru uye pakati pemasero dzinozadza semapuroyamu ehupenyu ane hunhu hwakanyanya mafuta. Aya ma organic polymers ndiwo anoumba iyo Caspary bhendi uye inodzivirira kupararira kwemvura neion. Kufambiswa kwezvinhu izvi kuburikidza neaplasta hakuna maturo, zvakaderera zvakanyanya kupfuura izvo zvinoitika munzira yekunzwira tsitsi.
Tsitsi nzira
Suberification yeiyo endodermis zvinoreva kuti iyo yega nzira yekutakura ndiyo syplast. Iko pano kuti mvura inopfuura nepakati pe cytoplasmic membranes uye protoplast yemasero. Inofungidzirwa seyakanyanya kutakura kutakura uye Inoenda kubva kuchitokisi kuenda kune sero uchishandisa kusiyanisa kwemvura inogona. Isu takaona kuti akange aine apoplast ane kufamba kwemvura kuburikidza nesimba reziya. Izvi zvinoitika kunyanya mushure mekurasikirwa nemvura kuburikidza nekuvhurwa kweye stomata.
Iyo syplast ndiyo yakabatana protoplastin iyo inomutsa iyo cytoplasm yesero. Panguva imwecheteyo tinogona kuona kuti zvakabatanidzwa neplasmodesmata. Zviri kuburikidza apa kuti mvura inoyerera zviri nyore pamwe nemamwe akaderera mamorekuru uremu mamorekuru uye zvinhu.
Ndinovimba kuti neruzivo urwu unogona kudzidza zvakawanda nezve iyo Caspary bhendi uye kukosha kwainayo kune zvirimwa.