Foliar and Root Dynamic Analyses Reveal a Coordinated Defense Regulatory Network Against Aeolesthes induta Infestation in Tea Plants
TL;DR
It is found that infestation changes the community of soil microbes and triggers a coordinated defense strategy in the tea plant, which ramps up production of chemical compounds that can directly fight off the pest.
Abstract
Simple Summary The tea plant is an important crop worldwide, but it faces serious threats from pests like the longhorn beetle Aeolesthes induta. These beetles bore into the trunks of tea plants, damaging their internal transport system and causing significant losses in tea production. This study investigated how tea plants defend themselves against this hidden attacker. We analyzed the microbes living in the soil around the roots, the chemical changes in the plant’s leaves and roots, and the genes that become active during an attack. We found that infestation changes the community of soil microbes and triggers a coordinated defense strategy in the tea plant. The plant’s leaves, which capture energy from the sun, begin to accumulate sugars, likely to provide energy for defense. At the same time, the roots ramp up production of chemical compounds that can directly fight off the pest, guided by a key plant hormone signal. Our findings reveal that tea plants have a sophisticated way of coordinating defenses between their aboveground and belowground parts. Understanding this natural defense network could help scientists and tea growers develop more sustainable methods to protect tea crops from devastating pests.