Competitive Interactions Between Whitefly- and Aphid-Transmitted Poleroviruses Within the Plant Host and the Insect Vectors

• DOI: 10.1094/phyto-08-20-0369-r
• Publication Date: 2020-11-05T20:22:18Z
• Authors: Vinicius Henrique...; Saptarshi Ghosh; Renate Krause-Sakate; Murad Ghanim
• Keywords: Whitefly; Myzus persicae; Aphis gossypii

Pepper cultivation in Israel has been constrained by two sympatric poleroviruses, vein yellows virus-2 (PeVYV-2) and whitefly-borne virus (PeWBVYV), which are transmitted specifically aphids whiteflies, respectively. This study investigated the interaction between PeVYV-2 PeWBVYV inside host plant insect vectors. Our results show that compete against each other also aphids. was weaker competitor plant, with diminished transmission rates when inoculated simultaneously or successively after could only be efficiently first then challenged PeVYV-2. Successive inoculations of plants viruliferous whiteflies followed led to a coinfection rate 60%, but severely reduced titers coinfected compared singly infected plants. In contrast, vector, quantities acquired given prior acquisition on PeWBVYV. However, we efficiency from remained comparable is likely attributable causing lesser impact stronger competitiveness whitefly. Competitive interactions vector can thus beneficial for their coexistence.