Ososayensi bathole ukuthi izimpande zezitshalo zishintsha ukuma kwazo ukuze zandise ukumuncwa kwamanzi. Bayeka ukuhlanganisa amagatsha lapho belahlekelwa ukuthintana namanzi futhi baphinde baqale kabusha i-branching kuphela ngemva kokuphinde baxhumane nomswakama, okusiza isitshalo ukuba siphile ngisho nasezimweni ezome kakhulu.
Ososayensi bezitshalo eNyuvesi yaseNottingham bathole indlela entsha yokuzwa amanzi abayibiza nge-"hydrosignaling". Ingosi ye-Phys.org. Ibonisa ukuthi ukunyakaza kwama-hormone kuhlobene kanjani nokugeleza kwamanzi. Imiphumela yomsebenzi wososayensi yanyatheliswa kumagazini Isayensi.
Amanzi ayingqamuzana elinganisela ijubane lokuphila emhlabeni. Ukuguquguquka kwesimo sezulu kubangela ukuna kwemvula ukuthi kuphazamiseke, kuphazamise izitshalo ezidla imvula ikakhulukazi.
Izimpande zidlala indima ebalulekile ekwehliseni umthelela wokucindezelwa kwamanzi ezitshalweni ngokulungisa isimo sazo (isibonelo, igatsha noma ukujula) ukuze zinikeze amanzi amaningi. Ukuthola ukuthi kanjani izimpande zezitshalo ukuzivumelanisa nokucindezelwa kwamanzi kubalulekile ekusizeni izitshalo zandise ukumelana kwazo nokushintsha kwesimo sezulu.
Besebenzisa i-X-ray micro-computed tomography, abacwaningi bakwazi ukuveza ukuthi izimpande zishintsha ukuma kwazo ekuphenduleni ukutholakala komswakama wangaphandle, ukuxhumanisa ukunyakaza kwamanzi kumasignali avela kumahomoni ezitshalo alawula ukuhlanganisa izimpande.
Ucwaningo lunikeza ukuqonda okubalulekile ezakhini zofuzo ezibalulekile kanye nezinqubo ezilawula izimpande zezimpande ekuphenduleni ukutholakala kwamanzi okulinganiselwe, ukusiza ososayensi bathuthukise izindlela ezintsha zokulawula ukwakhiwa kwezimpande ukuze kuthuthukiswe ukumuncwa kwamanzi kanye nesivuno sezitshalo.
Lapho izimpande zihlangana nomswakama, isignali eyinhloko ye-hormonal (auxin) ingena emanzini, okwenza izimpande ezintsha zakheke. impande amagatsha. Kodwa-ke, lapho izimpande zilahlekelwa ukuthintana nomswakama, zithembele emithonjeni yamanzi yangaphakathi ukuze zihlanganise esinye isignali yehomoni (ABA) ngaphandle evimba isignali yegatsha ukuthi ihambe. Lo mshini olula kodwa omuhle uvumela izimpande zezitshalo ukuthi zilungise kahle isimo sazo ukuze zivumelane nezimo zendawo futhi zandise ukubuyiswa komswakama.
Lokhu okutholakele okusha kungenzeka kuphela ngenxa yamathuluzi aphambili kanye nendlela yokusebenzisana yethimba lamazwe ngamazwe lososayensi abavela e-UK, Belgium, Sweden, US and Israel.