%0 Journal Article
%T Foliar application of Burkholderia sp. strain TNAU-1 leads to activation of defense responses in chilli (Capsicum annuum L.)
%A Madhavan
%A Srinivasan
%A Paranidharan
%A Vaikuntavasan
%A Velazhahan
%A Rethinasam
%J Brazilian Journal of Plant Physiology
%D 2011
%I Scientific Electronic Library Online
%R 10.1590/S1677-04202011000400003
%X induction of phenolics, peroxidase (po), polyphenol oxidase (ppo), chitinase and thaumatin-like proteins (tlp) in leaves of chilli (capsicum annuum l.) in response to foliar application with a biocontrol agent burkholderia sp. strain tnau-1 was studied. chilli plants, when sprayed with burkholderia sp. strain tnau-1 showed increase in phenolic content one day after application and the maximum accumulation was observed seven days after treatment. three new peroxidase isozymes (po-1, po-2 and po-3) were induced in chilli leaves upon treatment with burkholderia sp. strain tnau-1. the activity of all the peroxidases was at the maximum level three days after treatment and subsequently decreased. protein extracts obtained from burkholderia sp. strain tnau-1 treated plants exhibited a major polyphenol oxidase (ppo-1) one day after treatment. the activity of ppo-1 subsequently decreased, but continuously present throughout the experimental period of 15 days. western blot analysis of protein extracts from burkholderia sp. strain tnau-1 treated chilli leaves revealed that two tlps with sizes of 23 and 25 kda and a chitinase with an apparent molecular weight of 28 kda were induced three days after treatment.
%K capsicum annuum
%K chitinase
%K induced resistance
%K peroxidase
%K phenolics
%K polyphenol oxidase
%K thaumatin-like protein.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1677-04202011000400003&lng=en&nrm=iso&tlng=en