Publications by authors named "Xi-Wang Li"
Polyphenol oxidases (PPOs) as inducible defense proteins, contribute to tea (Camellia sinensis) resistance against tea geometrid larvae (Ectropis grisescens), and this resistance has been associated with the jasmonic acid (JA) signaling by testing geometrid performance in our previous work. However, the regulation of PPO-based defense by JA and other hormone signaling underlying these defense responses is poorly understood. Here, we investigated the role of phytohormones in regulating the PPO response to tea geometrids.
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- Polyphenol oxidases (PPOs) are crucial for tea plants' defense against herbivores like the tea geometrid Ectropis obliqua, with increases in PPO activity linked to jasmonic acid (JA) treatment.
- Caterpillars of Ectropis obliqua showed slower growth and reduced weight gain on JA-treated tea plants compared to control plants, indicating a dose-dependent relationship between JA and caterpillar development.
- Ectropis obliqua caterpillars can inhibit the production of PPOs in response to mechanical wounding and herbivore regurgitant, suggesting they have adapted to overcome the tea plants' defense mechanisms.
Background: Glutathione S-transferases (GSTs) have received considerable attention in insects for their roles in insecticide resistance. Laodelphax striatellus (Fallén) is a serious rice pest. L.
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