Resistance of cactus pear (Opuntia ficus-indica) againstPseudocercospora opuntiaethroughβ‑1,3‑glucanase activity and polyphenolic compounds in cladodes
Abstract:Black spot disease, caused by the hemibiotrophic fungus Pseudocercospora opuntiae, is one of the main phytosanitary problems of cactus (Opuntia spp.). Through mass selection, one cultivar of Opuntia ficus-indica (L.) Mill. resistant to colonization by P. opuntiae was identified. The ethanolic extract of resistant cladodes showed higher levels of total condensed tannins, flavonoids and polyphenols than those of the susceptible genotypes, generating 93% inhibition of P. opuntiae conidial germination in vitro. Th… Show more
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