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Title: Possible mechanism of action of antiviral proteins from the leaves of Chenopodium album L.
Authors: Dutt, Som
Yadav, O P
Kapoor, H C
Lodha, M L
Keywords: Chenopodium album;Antiviral proteins;Mechanism;N-glycosidase activity;Systemic response;RNase activity;Tobacco mosaic virus;Sunnhemp rosette virus
Issue Date: Feb-2004
Publisher: NISCAIR-CSIR, India
Abstract: Antiviral Protiens (AVPs) named CAP-I and CAP-II purified from the leaves of Chenopodium album cv Pusa Bathura-1 indaced systemic against tobacco mosaic virus (TMV) and sunnhemp rosette virus (SRV) in both hypersenstitive as well as systemic hosts. An increased accumulation of two polypeptides (~17 kDa and ~26 kDa) was observed in untreated upper leaves of Cyamopsis tetragonoloba plants whose basal leaves were treated with CAP-I/CAP-II. Both AVPs exhibited ribosomal RNA N-glycosidase activity on 28S rRNA of tobacco leaves and also caused in vitro degradation of TMV RNA. It is suggested that the CAP-I and –II are multi-functional and may be acting at multiple levels to ensure maximum possible inhibition of viral infection.
Page(s): 29-33
ISSN: 0975-0959 (Online); 0301-1208 (Print)
Appears in Collections:IJBB Vol.41(1) [February 2004]

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