The influence of high-temperature frequency variation on the life-history traits of pyridaben-sensitive and -resistant strains of Tetranychus truncatus

Song, Liwen; Fu, Wenhua; Li, Wenliang; Liu, Lei; Wang, Senshan

doi:10.1007/s10493-023-00873-5

Cited by 3 publications

(2 citation statements)

References 34 publications

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“…With regard to pyridaben resistance, several studies examined fitness costs induced by pyridaben resistance, as reports of resistance increased worldwide. Song et al (2024), studied the effects exposure to bursts of high temperatures on the different life history parameters in both susceptible and pyridaben-resistant populations. The pyridaben-resistant population suffered from more significant effects of the heat exposures on their longevity than the susceptible population.…”

Section: Discussionmentioning

confidence: 99%

Characterization of pyridaben resistance in Tetranychus urticae in Israel

Rath,

Regon,

Kliot

2024

Preprint

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Tetranychus urticae, the Two-Spotted Spider Mite (TSSM) is a plant pest causing serious economic damages in various crops worldwide. The main means of controlling TSSM in the field are based on chemical pesticides. The number of reports of pesticide resistance among populations of this pest has crowned it the pest resistant to the highest number of compounds worldwide. Pyridaben is one of the pesticides used against TSSM, it works by inhibiting complex I of the mitochondrial electron transport pathway. In the study, we examined three populations of TSSM with different genetic backgrounds, all with different resistance abilities to pyridaben. We focused on the underling mechanisms of resistance as well as possible fitness costs associated with the resistance. We show that resistance to pyridaben in the three populations is metabolic, and that high resistance abilities incur high fitness costs. Our data sheds light on the current situation of TSSM resistance to pyridaben in Israel.

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Section: Discussionmentioning

confidence: 99%

Characterization of pyridaben resistance in Tetranychus urticae in Israel

Rath,

Regon,

Kliot

2024

Preprint

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“…Ge et al [ 25 ] found that when exposed to a high temperature of 40 °C, the mortality rate of Nilaparvata lugens treated with triazophos (tzp) decreased significantly (from 94% to 50%), and the long-term extension of LT 50 was 17.2 h. There is a positive correlation between the resistance of Laodelphax striatellus to buprofezin and its heat resistance [ 26 ]. The study in our laboratory found that there were significant differences in fertility, longevity, and enzyme activity between pyridaben-susceptible and -resistant strains of T. truncatus under high temperature stress, while the pyridaben-resistant strain showed the advantage of adaptability to high temperature [ 27 , 28 ]. We inferred that exposure to pesticide stressors can also induce pests to develop heat tolerance, but the molecular mechanism involved is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Differential Antioxidant Enzyme Gene Expression and Functional Analysis of Pyridaben-Susceptible and -Resistant Strains of Tetranychus truncatus (Acari: Tetranychidae) under High Temperature Stress

Song,

Yu,

et al. 2024

Insects

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Tetranychus truncatus (Acari: Tetranychidae) has caused serious economic losses on some crops (soybean, corn, and cotton) in China, and has developed resistance to most acaricides. Our laboratory study found that T. truncatus was resistant to pyridaben and also adapted to high temperature (34–40 °C). High temperature stress may cause arthropods to produce a large amount of reactive oxygen species (ROS), causing oxidative damage. Antioxidant enzymes, as the main antioxidants, can reduce the damage caused by excessive ROS in arthropods. In order to study the adaptation mechanism of the pyridaben-resistant strain of T. truncatus to high temperature and the role of antioxidant enzyme genes under high temperature stress, four antioxidant enzyme genes, TtSOD, TtPOD3, TtPOD4, and TtGSTs2, were screened according to the transcriptome sequencing data of pyridaben-susceptible and -resistant strains in T. truncatus. Firstly, the phylogeny and structure analyses of these four genes were carried out. Then, real-time quantitative PCR (RT-qPCR) technology was used to analyze the gene expression patterns of antioxidant enzymes in two strains of T. truncatus at three different high temperature ranges (34 °C, 38 °C, and 42 °C). The results showed that the expression levels of four antioxidant enzyme genes of two strains of T. truncatus were induced by high temperature stress, and the expression levels of antioxidant enzyme genes were significantly different in each development state. The gene expression of antioxidant enzyme genes in resistant strains at the adult stage was significantly higher than that in susceptible strains. After the TtSOD and TtPOD4 genes of adult mites of the resistant strain were silenced by RNA interference (RNAi) technology, the mortality rate of mites with TtPOD4 gene silencing reached 41.11% after 96 h at 34 °C, which was significantly higher than that of the control and TtSOD gene silencing. It has been confirmed that the TtPOD4 gene plays a key role in the adaptation of pyridaben-resistant strain of T. truncatus to high temperature. It lays a theoretical foundation for revealing the thermal adaptation mechanism of T. truncatus.

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