Uphononongo luchaza indlela entsha elamla unxulumano phakathi kwezityalo nomngundo. Oku kuvula iindlela zokwandisa kwezolimo imveliso kwixesha elizayo ngokukhulisa izityalo ezikwaziyo ukumelana namanzi ezifuna amanzi amancinci, umhlaba kunye nokusetyenziswa kancinci kwezichumisi zekhemikhali.
Izityalo zinobunzima ulwalamano ubudlelwane kunye mycorrhizal fungi. Ezi fungi zenza i-sheath ejikeleze iingcambu zezityalo ezibonelela ngeenzuzo ezininzi phantsi kobudlelwane be-symbiont. Ubudlelwane buvumela ukwanda kwamanzi kunye nesondlo sokufunyaniswa sisityalo ngakumbi i-phosphorus kwaye ngokubuyisela, isityalo sibonelela ngekhabhoni kumngundo ukuba wondle kwaye ukhule. Umngundo ukhula ixesha elide kwiingcambu zesityalo kwaye ngoko umthamo omkhulu womhlaba uyafikeleleka. Phantse i-80 pesenti yazo zonke iintlobo zezityalo ezisemhlabeni zine-mycorrhizal fungus enxulumene neengcambu. Olu dlelwane lolona nxibelelwano lukhoyo kwindawo yonke kwaye lufanelekileyo lwesityalo-sentsholongwane apho iindlela ezisisiseko zisahlolwayo.
Kuphononongo olupapashwe ngoJulayi 8 ngo Izityalo zendalo, abaphandi basebenzise i-genomic sequencing, i-quantitative genetics, i-computing yokusebenza okuphezulu kunye nebhayoloji yovavanyo lokufumana izinto ezibangela ufuzo ukwenza ubudlelwane be-symbiont phakathi kwesityalo nomngundo. Bakhetha Arabidopsis, isityalo esinokuthi ngokwendalo singasebenzisani ne-ectomycorrhizal fungus L. bicolor. Bachonge ijini ethile enokuthi ilawule ubudlelwane besymbiotic phakathi kwesi sityalo kunye nokungunda emhlabeni. Emva koko, benza ubunjineli bofuzo esi sityalo saba yinguqulelo entsha ngoku ebonakalisa iprotein ebizwa ngokuba yi-G-type lectin receptor-like kinase PtLecRLK1 protein. Isityalo ngoku sasitofelwe ngumngundo.
Iprotheni ye-G-uhlobo lwe-lectin receptor-efana ne-kinase PtLecRLK1 ibonwa ukulamla intsebenziswano ye-symbiotic phakathi Populus – L. bicolor kunye ne-transgenic Arabidopsis – L bicolor Iinkqubo njengoko umngundo ugquma iingcebiso zeengcambu zesityalo kwaye wenze isikhunta sokungunda esibonisa ukwakheka kwe-symbiotic. Ngokuguqulwa kofuzo olunye, ongenguye umamkeli Arabidopsis yaguqulwa yaba ngumamkeli wale symbiont.
Uphononongo lwangoku luchaza inyathelo elibalulekileyo lemolekyuli malunga nendlela i-symbiotic plant-fungi association isekwe ngayo. Ukuqonda ngcono olu budlelwane ngokufumana izinto ezibangela ufuzo kunokunceda ukusebenzisa olu dlelwane lwe-symbiont ukuze lukwazi ukukhula izityalo kwiimeko ezingathandekiyo njengemvula, okanye ukonyuka kwesondlo kunye ne-nitrogen, ukujongana ne-pathogens njl njl. ubudlelwane. Ingasinceda ukuba sikhule izityalo eziya kufuna amanzi amancinci, ngaphantsi kwezolimo umhlaba, izichumisi zemichiza encinci, zixhathisa izitshabalalisi kunye neentsholongwane kwaye zivelise isivuno esikhulu ngehektare nganye.
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Umthombo (s)
Labbé, J et al. 2019. Ukulamla ukusebenzisana kwesityalo-mycorrhizal nge-lectin receptor-like kinase. Izityalo zendalo. 5 (7): 676. http://dx.doi.org/10.1038/s41477-019-0469-x
