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Upregulated expression of RESPIRATORY BURST OXIDASE HOMOLOG D underlies lesion-mimic phenotype in dark-treated Arabidopsis pheide a oxygenase mutant leaves.

Planta - 26 Apr 2022

Yu Yongfan, Zhang Qiang, Sun Sujing, Yang Jiading

Abstract excerpt

MAIN CONCLUSION: Upregulated expression of RESPIRATORY BURST OXIDASE HOMOLOG D (RBOHD) encoding a plasma membrane NADPH oxidase is responsible for the lesion-mimic phenotype in detached Arabidopsis leaves with mutation of PHEIDE a OXYGENASE during extended darkness. Chlorophyll degradation is an indispensable process in leaf senescence, either age-dependent or dark-induced. Besides higher chlorophyll retention, a...

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PMID: 35471712
DOI: 10.1007/s00425-022-03895-2

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