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È stato manipolato il gene che decide la forma delle foglie delle piante: in questo modo è stato possibile cambiare forma a quelle degli arbusti di cotone, facendole diventare più piccole, con i lobi sottili e allungati. Il risultato dello studio, pubblicato sulla rivista dell'Accademia americana delle scienze (Pnas), apre la strada a raccolti più produttivi e a costi minori.
I ricercatori, guidati da Vasu Kuraparthy, dell'Università statale della North Carolina, hanno trovato nella sequenza del DNA il gene da cui dipende la forma delle foglie nel cotone di montagna, e lo hanno manipolato in modo da cambiarne la l'aspetto, ottenendo così varietà più produttive a costi minori.
L'obiettivo è arrivare a sviluppare il cotone "ideale" da coltivare. "Siamo riusciti a farlo solo in modo temporaneo. Ma in futuro saremo in grado di farlo in modo permanente. Ora abbiamo compiuto il primo passo", commenta Kuraparthy.
ANSA/Dek
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