Kuze kube manje, ubuntu bulwa nobhubhamende we-covid-19, imboni ye-citrus izama ukubhekana nesifo sayo esilimaza i-citrus landscaping (HLB).
I-HLB yisifo esilimaza kakhulu kakhulu emhlabeni. Eminyakeni eyishumi edlule, yabhubhisa imboni ye-citrus Florida, enciphisa ukukhiqizwa kwamawolintshi ukuze ujusi neminye imikhiqizo ngo-72%. I-CandiDatus libeatricus (CLAS) iyi-microbe ehambisana nalesi sifo. Itholakala emgodini wesihlahla futhi, njengama-microgenic ama-microoorganisms amaningi ezitshalo, idluliselwa yisinambuzane ngesikhathi sokondla. Ukuthuthukiswa kwalesi sifo kungaba kancane, kepha kube kubi. Izimpawu ziqala ngamaqabunga abonakalayo, amahlumela aphuzi kanye nokubanjwa kokukhula, bese ungena ekunciphiseni isivuno, ikhwalithi engeyinhle yezithelo futhi, ekugcineni, ukufa kwesihlahla.
Njengamanje, ukuphela kwento engenza abakhiqizi be-citrus ukuthi bavikele amasiko abo kusuka ku-HLB, ukubhekana nabathwali bezinambuzane.
Abaphenyi abaningi bazama ukuthola izindlela zokuphatha lesi sifo besebenzisa amasu ahlukahlukene - kusuka emithini yokubulala izinambuzane kanye nama-antibiotics kuya ezinjeni, ukuhlwitha.
Kodwa kwavela enye indlela entsha eqondile - ukuqonda kwe-microbioma yezitshalo, umngcele omusha othokozisayo ekulweni nezifo.
UDkt Caroline Roper noMlobi wokuqala kaDkt Nicole Guinnese wase-Exkian of California eRiverside wabamba amakhosi omsebenzi wesayensi okuhlose ukufundwa kwesifo se-HLB.
I-athikili yabo yakamuva ku-Magazine Phytobomes Journal - "Amashifu ama-microbial adangele ukusabela kwe-Citrus, abonise imiphumela ye-microbioma ku-HLB" - ifingqa imiphumela yendlela ephelele efundweni yokuxhumana phakathi kwezitshalo namagciwane, kufaka phakathi izithombe eminyakeni emithathu Futhi kuphumela ezinhlotsheni ezintathu ezahlukahlukene zezicubu (izimpande, iziqu kanye namaqabunga). Okuthakazelisa kakhulu ukusebenzisa ukulandelana kwe-amplicon (16s kanye nakho) ukukhomba iqhaza eliyinkimbinkimbi kakhulu futhi elinamandla le-microbiome (womabili amagciwane kanye namakhowe), ngoba kuguquka ngesikhathi sokuqhubeka kwesifo se-HLB.
Kucatshangelwa ukuthi i-HLB idala okubangelwa ukushintshwa kwezifo ze-microbiome yesihlahla. Ikakhulu, ososayensi bafakazela ukukhula kokuhlukahluka kwe-microbial njengoba isifo siqhubeka.
Baphinde baphenya ngokuthambekela futhi bathola ukuthi ukwanda kokuhlukahluka kuhlotshaniswa nokwanda kwale nsolovo (ebangela izifo) kanye nokuhlaselwa (ukondla izicubu ezifile) zamagciwane. Babona ukuncipha okukhulu ngenani lamagciwane awusizo ezigabeni zokuqala zalesi sifo. Amakhowe we-Armorrhis we-Armbuscular Mycorrhis asephenduke alinye lalawa maqembu awusizo, okuthi, njengoba ababhali bagcizelelwe, bakhombisa ukwehla okubukhali ngezinombolo ezilinganayo.
Ukukhathala kwezinhlobo eziphambili zamagciwane ngesikhathi salesi sifo kuvula iminyango ukuhlasela amanye amagciwane, futhi hhayi bonke abanobungane. Njengoba isifo sisatshalaliswa, isihlahla se-citrus ne-microbi yaso siyaqhubeka nokushintsha. UDkt Guinnan, umbhali oholayo walolu cwaningo, uthole ukuthi ezimpandeni ezithinteke kakhulu kukhona ukucebisa okunama-microorganisnic kanye nama-microorganisms we-saprophic. Ukucebiswa kwalawa magciwane kungaba nomthelela ekuqhubekeni kwalesi sifo futhi kunciphise izimpande, okungomunye wemiphumela emibi ye-HLB.
Kodwa-ke, ososayensi bathola okunye nokunye. UDkt Ropere noDkt Ginnon basikisela ukuthi lapho i-HLB isiqala nje, umcimbi ophekayo ubangela ukuba "amagagasi" wamagciwane awusizo eza ukusiza izihlahla ze-citrus. Basola ukuthi ama-microbes aqala ukuphendula umzimba ukuvikela umnikazi.
Izihlahla ezisindayo noma izihlahla ezikhule kakhulu zibe yiphrofayili eyingqayizivele ye-microbial. Lezi zihlahla zacetshiswa ngezinsolona ngamagciwane ama-sywuotic asolwa ngokufana, njenge-lactobacillus Sp. ne-aureobasidium sp. Abaphenyi baholwa abacwaningi ukuthola amagciwane athile ahambisana nokuqhubeka kwesifo.
UDkt Guinnan uthi isikhathi seqiniso kwakuwukuhlaziywa kwedatha: "Ekuqaleni, besifuna i-taxa, inani elilinganiselwe lalo lakhula noma lenqabe njengoba ukuqhubeka kwesifo kukhuphuka. Ukuhlaziywa kwethu kwenombolo ehlukile ekugcineni kwembula imithetho ecacile yokucebisa ephinde yakhiqizwa kumatekisi amaningi. Lesi yisikhathi lapho saqala ukuthuthukisa amaphethini ngamanye kumodeli yezifo ebanzi. "
Lolu cwaningo luzoba yisisekelo samaphrojekthi amasha nokubambisana nalabo, kanye nababhali, bashukunyiswa umsebenzi ongaba khona we-microbioma ekulweni nezifo zezilimo. Esikhathini esizayo esiseduze, ososayensi banethemba lokuthi ukuqonda okuhle kakhulu kwamagciwane awusizo kuzosiza ukuthuthukisa uhlelo lokwelashwa olulawulwa yi-microbioma ukuvikela izilimo ezifweni ezinjenge-HLB. Ngaphezu kwalokho, imodeli eyenziwe yiyo ingasetshenziswa ukuze ihlaziyele izifo zamanye amazendla ezolimo.
(Umthombo: www.eurekalert.org).