en تخصصي Special گزارش کوتاه Short communication <div> <p><strong>Abstract</strong></p> <p><em>Hop stunt viroid</em> (HSVd) and <em>Citrus tristeza virus </em>(CTV) are the causal agents of most important diseases of citrus. Previously we reported a novel variant of HSVd that constantly associated with the yellow corky vein disease. Here, 19 individual citrus leaves with yellow corky vein symptoms were sampled for CTV by ELISA. In this study, most symptomatic samples were found to be infected with CTV. Therefore mixed infection of CTV and HSVd may be, involve in appearance of yellow corky vein symptom in mentioned disease.</p> </div> Hop stunt viroid (HSVd), Citrus tristeza virus (CTV), ELISA 29 30 http://journal.isv.org.ir/browse.php?a_code=A-10-96-3&slc_lang=en&sid=1 Seyed Ali Akbar Bagherian 10031947532846003234 10031947532846003234 Yes Department of Horticultural sciences, College of Agriculture, Jahrom University, Jahrom, Iran