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Updated: Jan 12, 2026

Robotic Sensing and Stimuli Provision for Guided Plant Growth
Published on: July 1, 2019
Light-quality-directed plant growth strategy controlled by SnRK2s
Xinyan Qin1, Tianze Yu1, Yan Yan1
1State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China.
None:
Light signal plays a profound role in modulating plant growth and development. Currently, it remains obscure whether certain light signaling components can alter their roles according to the light quality. Here, we show that three sucrose non-fermenting 1 (SNF1)-related protein kinase 2 (SnRK2) family members in Arabidopsis, SnRK2.2/3/6, exert dual effects on hypocotyl elongation under far-red (FR) and red (R) light. SnRK2s interact with ELONGATED HYPOCOTYL5 (HY5) and PHYTOCHROME-INTERACTING FACTOR4 (PIF4), two key factors that antagonistically regulate hypocotyl elongation, and promote the abundance of both proteins in the light. Notably, the opposite effects of SnRK2s in FR and R light are attributed to different functional significance of HY5 and PIF4. Furthermore, SnRK2s promote the accumulation of HY5 and PIF4, possibly by regulating their interactions with CONSTITUTIVELY PHOTOMORPHOGENIC1. Together, our study uncovers the role of SnRK2s in photomorphogenesis, allowing plants to adjust their growth strategy according to their dynamic light conditions.
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