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Fig. 7 | BMC Plant Biology

Fig. 7

From: Transcriptome and comparative gene expression analysis of Phyllostachys edulis in response to high light

Fig. 7

Generalized model of reactive oxygen species (ROS) pathway in bamboo. A large amount of high light (HL) produced an excess of excitation energy in the light reaction. Some of high energy maybe transferred to oxygen, thus generated toxic ROS. ROS can be detected by one of mechanisms, redox sensitive transcription factors. Phosphatidic acid and Ca2+ activate the serine/threonine protein kinase (OXI1). Then, the activation of OXI1 activated the mitogen-activated-protein kinase (MAPK) cascade (MAPK3/6) and these induced or activated short/mid-term response transcription factors that regulated the ROS-scavenging and related pathways. In the ROS-scavenging, main ROS enzymes, reaction equation and reaction location were listed in moso bamboo. Abbreviations: HL, high light; PSII, photosystem II; PSI, photosystem I; Chl, chlorophyll; PC, plastocyanin; Cyt, cytochrome; PQ, plastoquinone; 3PGA, 3-phosphoglycerate; RuBP, ribulose-1,5-biphosphate; ROS, reactive oxygen species; SOD, superoxide dismutase; APX, ascorbate peroxidase; MDAR, monodehydroascorbate reductase; GR, glutathione reductase; Cat, catalase; GPX, glutathione peroxidase; AOX, alternative oxidase; PrxR, peroxiredoxin; Trx, thioredoxins; GLR, glutaredoxin; chl, chloroplast; cyt, cytosol; mem, membrane; mit, mitochondria; nuc, nuclei; per, peroxisomes

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