PeBBX24 suppresses GRP2 transcription in contrasting poplars differing in salt tolerance

homeostasis in transgenic poplars. Moreover, PeBBX24-drived repression of PeGRP2 and PcGRP2 could lessen their negative impact on reactive oxygen species scavenging, ultimately reinforcing the antioxidant defense machinery in transgenic poplars. Consequently, salt-induced PeBBX24 leads to downregulation of PeGRP2 and enhances salt adaptation in P. euphratica. Furthermore, PeBBX24-dependent repression of PcGRP2 offers a conceptual framework and promising genetic resources for breeding salt-tolerant and fast-growing poplars.