Analysis of grape polyamines from Grapevine leafroll associated viruses (GLRaV-2 and -3) infected vines

A multidisciplinary study on the effects of phloem-limited viruses on the agronomical performance and berry quality of Vitis vinifera cv. Nebbiolo

“…AGPR is involved in the synthesis of ornithine and arginine, precursors of polyamines [59], which are small basic molecules involved in plant growth and stress response [60]. Alteration of grape polyamines has also been reported as a consequence of infection with several phloematic viruses, including GLRaV-1 and RSPaV [61,62]. However, co-migration of AGPR and RSPaV coat protein means that the individual contributions of each protein to the over-expression of the spot cannot be assessed.…”