Lettuce Leafroll Mosaic-a New Lettuce Disease Caused by Caulinnovirus-like Agent in Taiwan

萵苣捲葉嵌紋病－一種由疑似花椰菜嵌紋病毒群成員之病毒引起之新病害

陳煜焜(Yuh-Kun Chen) ； 陳脉紀(Moh-Jih Chen)

《植物病理學會刊》 3卷4期 (1994/12) Pp. 209-215

https://doi.org/10.6649/PPB.199412_3(4).0004

摘要

本研究由台中地區栽植嫩莖萵苣(Lactuca sativa L. asparagina Bailey)之田間發現一種具嵌紋、捲葉及矮化等病徵之病株，經系列研究證實其為由一疑似花椰菜嵌紋病毒群成員之病毒所致之病毒病害。電子顯微鏡鏡檢顯示該病毒顆粒為球形，直徑約50nm。光學顯微鏡鏡檢及超薄切片觀察則發現病毒可導致病組識內形成花椰菜嵌紋病毒群成員特有之內含體(inclusion)。病毒顆粒可經汁液機械接種或經蚜蟲以非永續性或半永續性方式傳播至特定之健康寄主，在總共8科37種供試植物中，本研究發現其僅能感染平葉萵苣(Lactuca scariola var. sativa)、嫩莖萵苣(L. sativa L. asparagina)、皺葉萵苣(L. sativa var. crispa)及結球萵苣(L. sativa var. capitata)。本文為似花椰菜嵌紋病毒群病毒感染萵苣之首次報導。

關鍵字

嫩莖萵苣 ； 花椰菜嵌紋病毒群 ； 內含體

並列摘要

Asparagus lettuces (Lactuca sativa L. var. asparagina Bailey) with mosaic, leafroll, and stunting were discovered in the field of Taichung, Taiwan. These Lettuce plants were infected by a caulimovirus-like agent. The isometric particles of, the viral agent, which were about 50 nm in diameter, formed characteristic inclusions of caulimoviruses in infected cells. The particles were transmitted by means of mechanical inoculation or by aphids (Myzus persicae Sulzer) in a nonpersistant or semipersistant manner to Lactuca scariola var. sativa, L. sativa var. asparagina, L. sativa var. crispa, and L. sativa var. capitata only. This is the first report of a caulimovirus infection on lettuces in nature.

並列關鍵字

asparagus lettuce ； cautirricivirus ； inclusion ； Lactuca sativa var. asparagina