Differential expression and structural polymorphism in rubber tree genes related to South American leaf blight resistance.

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Author(s): ANGELO, P. C. da S.; YAMAGISHI, M. E. B.; CRUZ, J. C. da; SILVA, G. F. da; GASPAROTTO, L.

Summary: South American leaf blight (SALB) is the worst impairment for rubber tree cultivation in the Amazon. Hevea brasiliensis clones produce high latex yields but most are SALB-susceptible (SS). So, resistance has been searched in related species. We selected defense related genes among those differentially expressed while contrasting SALB-resistant (SR) and susceptible clones from three Hevea species. SS clones over-expressed pathways responsive to salicylic (SA) and also jasmonic acid, thus entering a self-harmful cycle. SR clones displayed tightly coordinated SA-responsive and stress-control pathways. Polymorphism in the selected gene sequences supported SS × SR clone divergence.

Publication year: 2020

Types of publication: Journal article

Unit: Embrapa Coffee

Keywords: Clone, Clones, Hevea Brasiliensis, Latex, Leaf blight, Melhoramento Genético Vegetal, Plant breeding, Plant genetics, Polimorfismo, Queima da Folha, Rubber, Seleção Genética, Seringueira

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