Accumulation of salicylic acid in tomato plant under biological stress affects oviposition preference of Bemisia tabaci

Abstract

In field, plants are exposed to multiple biological stresses simultaneously; for example, insect damage and pathogenic virus infection. In this study, we constructed a simple tripartite experimental system using tomato plant, their insect pest Bemisia tabaci (whitefly), and infectious tomato mosaic virus (ToMV). In the choice test, whiteflies laid more eggs on uninfected plant than on ToMV-infected plant. Further, whiteflies hatched more and grew better on the uninfected plant. Salicylic acid (SA) accumulated in infected plants, and the expression of genes involved in SA production and SArelated response was significantly induced. These plant responses against ToMV infection were similar to those against whitefly attack or SA-treated plants. To examine the importance of plant endogenous SA for whitefly preference, we repeated the choice test using the NahG transgenic tomato that cannot accumulate SA. Whiteflies did not show oviposition preference between NahG plants with and without ToMV infection or whitefly infestation. Overall, whiteflies prefer healthy plants, and SA accumulation in response to biological stresses is involved in their preference.

MdWRKY15 improves resistance of apple to Botryosphaeria dothidea via the salicylic acid‐mediated pathway by directly binding the MdICS1 promoter

“…SA accumulation in Arabidopsis is involved in disease resistance against Pseudomonas syringae (Wang et al 2009). In tomato and tobacco, the accumulation of SA was responsible for the disadvantage of whitefly (Ueda et al 2019; Xu et al 2019). It is important to study the resistance mechanism of plants, as it relates to the SA biosynthesis pathway.…”

Dynamic changes in virus-induced volatiles in cotton modulate the orientation and oviposition behavior of the whitefly Bemisia tabaci

“…The repellent activity of this compound has previously been demonstrated against B. tabaci (Tu and Qin 2017). Ueda et al (2019) observed that virus infected plant was less preferred by whitefly, B. tabaci for oviposition probably due to accumulation of plant defense substances such as salicylic acid. Further, it was observed that Begomovirus-encoded protein βC1 accounted for the attenuation of plant defense responses (Yang et al, 2008;Zhang et al, 2012).…”

“… Li et al (2014) demonstrated that βC1 from Begomovirus interacted with the MYC2 protein, leading to a reduction in the host plant’s terpene synthase (TPS) levels, which in turn enhanced the performance of its vector, B. tabaci. Although Begomovirus-infected plants entice whiteflies with favorable attractant cues, virus-infected plants are not preferred by B. tabaci for egg laying ( Mann et al, 2008 ; Ueda et al, 2019 ). The results of our studies ( Figure 3 ) also revealed a significantly lower number of eggs on CLCuV-infected plants than on healthy plants.…”

Morphology-Based Identification of Bemisia tabaci Cryptic Species Puparia via Embedded Group-Contrast Convolution Neural Network Analysis

“…Mostly, crossing experiments have demonstrated partial, or complete, reproductive isolation between populations identified as separate species a priori by CO1 barcoding ( De Barro and Hart 2000 ; Liu et al 2012 ; Qin et al 2015 ; Vyskočilová et al 2019 ). Nonetheless, despite clear molecular evidence that B. tabaci is a species complex, some recent publications continue to refer to, and treat, it as a single species (e.g., Becht et al 2019 ; Ueda et al 2019 ). While acknowledging B. tabaci as a species complex, others refer to it ambiguously (e.g., Hamada et al 2019 ) or inconsistently (e.g., Kliot et al 2019 ).…”