Daily Archives: 27th of August 2012

Cyanogenesis and tissue damage in rubber tree

Cyanogenesis and tissue damage in rubber tree

Cyanogenesis and tissue damage in rubber tree

Cyanogenesis can act as defence against herbivores and the amount of HCN generated per unit time is crucial in its role as a feeding deterent. Kadow et al. examine linamarase and hydroxynitrile lyase in rubber tree, Hevea brasiliensis, and find up to ten-fold increases in activity that occur within seconds in response to tissue damage. In contrast to genetic and transcriptional regulation, this post-translational activation allows an immediate, local and damage-type-dependent modulation of the cyanogenic response, which plays a decisive role in defence against herbivores and pathogens.

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