Back to Search
Start Over
Silencing of catalase reduces unfavorable low-temperature tolerance capacity in whiteflies.
- Source :
-
Pest management science [Pest Manag Sci] 2024 Jul; Vol. 80 (7), pp. 3116-3125. Date of Electronic Publication: 2024 Feb 21. - Publication Year :
- 2024
-
Abstract
- Background: Temperature is a primary factor that determines the eco-geographical distribution and population development of invasive insects. Temperature stress leads to various negative effects, including excess reactive oxygen species (ROS), and catalase (CAT) is a key enzyme against ROS in the antioxidant pathway. The whitefly Bemisia tabaci MED is a typical invasive pest that causes damage worldwide. Our previous studies have shown that CAT promotes whitefly adaptation to high temperature by eliminating ROS. However, the mechanism underlying the low-temperature adaptation of whiteflies is still unknown.<br />Results: In this study, we investigated the role of CAT in the low-temperature tolerance of B. tabaci MED by analyzing its survival rate, reproduction, and ROS levels at 25 °C (as a control, suitable temperature), 20 °C (moderately decreased temperature), and 4 °C (severely decreased temperature). Silencing of BtCAT1, BtCAT2, or BtCAT3 reduced the viability of whiteflies under a short-term severely decreased temperature (4 °C), which manifested as decreases in survival and fecundity accompanied by significant increases in ROS levels. Moreover, even at a moderately decreased temperature (20 °C), silencing of BtCAT1 led to high ROS levels and low survival rates in adults.<br />Conclusion: Silencing of BtCATs significantly increased the sensitivity of B. tabaci MED to low temperatures. BtCAT1 is likely more essential than other BtCATs for low-temperature tolerance in whiteflies. © 2024 Society of Chemical Industry.<br /> (© 2024 Society of Chemical Industry.)
Details
- Language :
- English
- ISSN :
- 1526-4998
- Volume :
- 80
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Pest management science
- Publication Type :
- Academic Journal
- Accession number :
- 38334193
- Full Text :
- https://doi.org/10.1002/ps.8016