The Peptide AmPep1 Derived from Amaranth Recognizes the Replication Hairpin of TYLCV Disturbing Its Replication Process in Host Plants

Sammanfattning

Antiviral compounds targeting viral replicative processes have been studied as an alternative for the control of begomoviruses. Previously, we have reported that the peptide AmPep1 has strong affinity binding to the replication origin sequence of tomato yellow leaf curl virus (TYLCV). In this study, we describe the mechanism of action of this peptide as a novel alternative for control of plant-infecting DNA viruses. When AmPep1 was applied exogenously to tomato and Nicotiana benthamiana plants infected with TYLCV, a decrease in the synthesis of the two viral DNA strands (CS and VS) was observed, with a consequent delay in the development of disease progress in treated plants. The chemical mechanism of action of AmPep1 was deduced using Raman spectroscopy and molecular modeling showing the formation of chemical interactions such as H bonds and electrostatic interactions and the formation of pi-pi interactions between both biomolecules contributing to tampering with the viral replication.

Nyckelord

peptide; TYLCV; Raman spectroscopy; plant virus; antiviral

Publicerad i

Journal of Agricultural and Food Chemistry
2019, volym: 67, nummer: 33, sidor: 9241-9253
Utgivare: AMER CHEMICAL SOC

SLU författare

• Kvarnheden, Anders

  • Institutionen för växtbiologi, Sveriges lantbruksuniversitet
    

Associerade SLU-program

SLU Nätverk växtskydd
AMR: Virus

UKÄ forskningsämne

Botanik
Strukturbiologi
Mikrobiologi

Publikationens identifierare

• DOI: https://doi.org/10.1021/acs.jafc.9b02526

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/101579