ISHS Acta Horticulturae 110: V International Symposium on Virus diseases of Ornamental Plants
TWO NEW POTEXVIRUSES FROM MONOCOTYLEDONS |
| Author: | Olwen M. Stone |
| Abstract:
Two apparently distinct and uncharacterised potexviruses were found in lily and in a species of Commelina. The lily isolate, from cv. Lady Bowes-Lyon, infected a limited range of host plants and was purified with difficulty from inoculated leaves of Tetragonia expansa. It was a good antigen, and an antiserum was made with a homologous titre of 1/16384. In cross-reaction tests, the virus only reacted with antiserum to the Commelina virus but not with sera to nine other potexviruses. The Commelina isolate was found in plants of Commelina diffusa growing at the Royal Botanic Gardens, Kew. It infected 15 of 20 species tested, was readily purified, and had properties typical of a potexvirus. It was not transmitted through seed of Commelina. It was a good antigen, and an antiserum was made with a homologous titre of 1/8192. In cross-reaction tests, the virus reacted distantly with two other potexvirus sera, and its antiserum reacted distantly with preparations of six other potexviruses. | |
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