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Banana genome study IDs disease resistance genes

Brazilian researchers have identified more than 90 genes in bananas linked to resistance to the fungal disease, Sigatoka leaf spot ( Mycosphaerella musicola). The researchers compared gene transcripts of resistant and susceptible banana subspecies, Musa acuminata ssp burmannicoides Calcutta 4 (resistant) and M acuminata subgroup Cavendish cv Grande Naine (susceptible) inoculated with M musicola. They found 95 potential defence-related genes, 14 of which were polymorphic with between three and eight alleles each and polymorphism information content ranging from 0.34 to 0.82.



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