<span style="font-size: 19.5pt;mso-bidi-font-size:14.5pt;font-family:"Times New Roman","serif"; color:black">A systemic resistance inducing antiviral protein with N-glycosidase activity from <i>Bougainvillea xbuttiana </i>leaves </span>

Abstract

600-603<span style="font-size: 13.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif";="" color:black"="">An antiviral protein from Bougainvillea xbuttiana leaves induced systemic resistance in host plants N. glutinosa and Cyamopsis tetragonoloba against TMV and SRV, respectively which was reversed by actinomycin D, when applied immediately or shortly after antiviral protein treatment. When the inhibitor was applied to the host plant leaves post inoculation, it was effective if applied upto 4 h after virus infection. It <span style="font-size:13.5pt;mso-bidi-font-size:8.5pt; font-family:" times="" new="" roman","serif";color:black"="">also delayed the expression of symptoms in systemic hosts of TMV. The inhibitor showed characteristic N- glycosidase activity on <span style="font-size:14.5pt;mso-bidi-font-size: 9.5pt;font-family:" times="" new="" roman","serif";color:black;mso-bidi-font-style:="" italic"="">25S <span style="font-size:13.5pt;mso-bidi-font-size: 8.5pt;font-family:" times="" new="" roman","serif";color:black"="">rRNA of tobacco ribosomes, suggesting that it could also be interfering with virus multiplication through ribosome-inactivation process. </span