The Arabidopsis Phytoglobin 2 mediates phytochrome B (phyB) light signaling responses during somatic embryogenesis
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During the light induction of somatic embryogenesis, phyB-Pfr suppresses Phytoglobin 2, known to elevate nitric oxide (NO). NO depresses Phytochrome Interacting Factor 4 (PIF4) relieving its inhibition on embryogenesis through auxin. An obligatory step of many... ...
