Kuthiwa u-10 kuya ku-15% wokulahleka kwemikhiqizo yezolimo emhlabeni udalwa yizifo. Futhi njengoba i-70-80% yalesi sifo sesitshalo ibangelwa isikhunta esine-filamentous, ukuvikela izitshalo ku-filamentous fungus kuyindaba ebalulekile ekondleni ngempumelelo abantu bomhlaba. Ukuze isikhunta se-pathogenic sithelele izitshalo, kufanele sidabule amangqamuzana e-epidermal esitshalo futhi sihlasele ingaphakathi. Ngamanye amazwi, amaseli e-epidermal ezitshalo asebenza njengesithiyo sokuqala sokumisa ukuhlasela kwesikhunta se-pathogenic endaweni ezungezile. Ngakho hlobo luni lwemisebenzi yokuzivikela amangqamuzana e-epidermal anayo?
Kuyathakazelisa ukuthi kwakwaziwa ukuthi i-epidermis yezitshalo iqukethe ama-chloroplast amancane angahileleki kangako ku-photosynthesis. Nokho, bekungakacaci ukuthi inamuphi umsebenzi. Kungani kunama-chloroplast amancane ku-epidermis yezitshalo angafaki isandla kakhulu ku-photosynthesis?
UProfesa ongumsizi u-Hiroki Irieda we-Faculty of Agriculture, i-Shinshu University kanye noProfessor Yoshitaka Takano, I-Graduate School of Agriculture, i-Kyoto University, bathola ukuthi ama-chloroplast amancane ku-epidermis yezitshalo alawula ukungena kwamagciwane esikhunta. I-duo ithole ukuthi ama-chloroplast amancane ahamba ngaphakathi kweseli ngokumangalisayo aye ongqimbeni olungaphezulu ngokuphendula ukuhlasela kwesikhunta futhi abandakanyeka ekuphenduleni okunjalo kokuzivikela.
Kulolu cwaningo, laba ababili baqale baphenya ukuthi hlobo luni lwesikhunta se-pathogenic ama-epidermal chloroplasts asabela kuso. Ngenxa yalokho, bathola ukuthi isikhunta se-pathogenic filamentous sikhunta sibangela ukufuduka kwe-epidermal chloroplasts. Kuyathakazelisa ukuthi kuphinde kwatholakala ukuthi lezi sikhunta se-pathogenic filamentous zaziyilokho okubizwa ngokuthi 'okungashintshiwe' futhi zavinjwa kumaseli e-epidermal ahlaselayo. Ngakolunye uhlangothi, ukhunta oluguquliwe lwe-pathogenic kungenzeka luhlasele i-epidermis ezitshalweni lapho ama-epidermal chloroplasts ayeke ukufudukela ongqimbeni olungaphezulu.
Ngokulandelayo, baphumelela ukuthola amaprotheni ezitshalo ahilelekile ekufudukeni kwe-epidermal chloroplasts. Lapho isitshalo esikhiqiza ngokweqile le phrotheni sidalwa ukwethulwa kokudluliselwa kwezakhi zofuzo, ama-epidermal chloroplast awazange adlulele ongqimbeni olungaphezulu ngokumelene nesikhunta se-pathogenic filamentous. Kulesi sitshalo se-transgenic, ukungatheleleki ekuhlaselweni kwe-epidermal ye-pathogenic filamentous fungus kuyancipha. Kuphinde kwatholakala ukuthi isikhunta se-pathogenic kungenzeka ukuthi sihlasele i-epidermis ezitshalweni lapho ama-epidermal chloroplasts ayekile ukufudukela ongqimbeni olungaphezulu. Le miphumela ikhombisa ukuthi ukufuduka kwama-epidermal chloroplasts aye ongqimbeni olungaphezulu kuhilelekile ekuphenduleni kokuzivikela okuvimbela ukuhlasela kwesikhunta se-pathogenic.
Funda isihloko esiphelele ku-www.phys.org.