Displacement of tomato yellow leaf curl virus (TYLCV)-Sr by TYLCV-Is in tomato epidemics in spain

被引：133

作者：

Sánchez-Campos, S ^{[1
]}

Navas-Castillo, J ^{[1
]}

Camero, R ^{[1
]}

Soria, C ^{[1
]}

Díaz, JA ^{[1
]}

Moriones, E ^{[1
]}

机构：

[1] CSIC, Estac Expt La Mayora, Malaga 29750, Spain

来源：

PHYTOPATHOLOGY | 1999年 / 89卷 / 11期

关键词：

epidemiology; host range; Lycopersicon esculentum; Phaseolus vulgaris; virus displacement;

D O I：

10.1094/PHYTO.1999.89.11.1038

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A progressive displacement of tomato yellow leaf curl virus (TYLCV)-Sr by TYLCV-Is was observed in tomato epidemics in southern Spain based on incidence data of both virus species obtained during surveys conducted between 1996 and 1998. Ecological factors that might be involved in such a displacement, such as competition of TYLCV-Sr and TYLCV-Is in tomato, transmission by local biotypes (B and Q) of Bemisia tabaci, and presence in weeds and alternate crops, have been analyzed. No selective advantage is observed for TYLCV-Sr or TYLCV-Is in tomato plants either infected via Agrobacterium tumefaciens or via B. tabaci. However, TYLCV-Is is more efficiently vectored by local biotypes of B, tabaci; and common bean, a bridge crop between tomato crops, is a host for TYLCV-Is but not TYLCV-Sr. Therefore, common bean acts as a reservoir for TYLCV-Is. These two factors are probably responsible for the displacement of TYLCV-Sr by TYLCV-Is as the causative agent of epidemics in tomato in southern Spain.

引用

页码：1038 / 1043

页数：6

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