“…Cysteine‐rich proteins (CRPs) that have multiple cysteine residues in their amino acid sequences but no other consistent amino acid sequence similarity occurs in viruses from different genera, including Allexivirus , Benyvirus , Carlavirus , Furovirus , Hordeivirus , Pecluvirus , Pomovirus and Tobravirus (Andika et al, 2012 ; Donald & Jackson, 1994 ; Fujita et al, 2018 ; Koonin et al, 1991 ; Liu et al, 2002 ; Lukhovitskaya et al, 2005 ; Te et al, 2005 ; Zhang et al, 2018 ). Many CRPs have been shown to play a role in VSR and induction of viral symptoms (Andika et al, 2012 ; Donald & Jackson, 1994 ; Fujita et al, 2018 ; Ghazala et al, 2008 ; Liu et al, 2002 ; Lukhovitskaya et al, 2005 ; Te et al, 2005 ; Yelina et al, 2005 ; Zhang et al, 2018 ). Furthermore, cysteine residues consistently occur in the putative zinc‐finger domains of the CRPs of hordeiviruses, carlaviruses and potyviruses (Bragg & Jackson, 2004 ; Lukhovitskaya et al, 2009 ; Pasin et al, 2022 ; Senshu et al, 2011 ; Xu et al, 2021 ).…”