Single gene resistance to Fusarium oxysporum f. sp. cubense Race 4 in the wild banana Musa acuminata subsp. malaccensis



  • Authors : Fraser-Smith, S.; Czislowski, E.; Daly, A.; Meldrum, R.; Hamill, S.; Smith, M.; Aitken, E.A.B.

  • Document type : Conference paper

  • Year of publication : 2016

  • Conference : IX International Symposium on Banana: ISHS-ProMusa Symposium on Unravelling the Banana's Genomic Potential, Brisbane, Australia 17-22 August 2014

  • Book title : Acta Horticulturae 1114

  • Publisher(s) : ISHS

  • Place of publication : Leuven, Belgium

  • Pages : 95-100

  • Language(s) : English

  • Abstract : Fusarium wilt of banana, caused by the fungal pathogen Fusarium oxysporum f. sp. cubense (Foc), is one of the most destructive diseases of banana. A particularly virulent strain of the pathogen, tropical race 4 (TR4), presents an emerging threat to banana producing regions throughout the world. No commercially acceptable banana cultivar is resistant to TR4 and, as with all strains of the Fusarium wilt pathogen, there is no effective chemical control. Genetic resistance to TR4 has been observed in the diploid wild banana Musa acuminata subsp. malaccensis, which has consequently received attention as a potential source of Fusarium resistance genes. The aim of this research was to determine the pattern of inheritance of the resistance trait by screening plants for resistance to Foc subtropical race 4 (SR4) and TR4. Our results showed that the F1 progeny of self-fertilized malaccensis plants challenged in pot trials against SR4 (VCGs 0120, 0129, 01211) and TR4 (VCG 01213/16) segregated for resistance according to a Mendelian ratio of 3:1 which is consistent with a single dominant gene hypothesis.

  • Keywords : FUSARIUM WILT; RESISTANCE GENES; TROPICAL RACE 4

  • Open access : No, but post-print available

  • Document on publisher's site : close View article on publisher's site

  • PostPrint : open

  • Musalit document ID : IN160224


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