Role of apoplastic ascorbate and hydrogen peroxide in the control of cell growth in pine hypocotyls.

Abstract

The growth cessation of plant axis has been related with the formation of diphenyl bridges among the pectic components of the cell wall caused by the action of apoplastic peroxidases using hydrogen peroxide as electron acceptor. The formation of diphenyl bridges is prevented by the presence of ascorbate in the apoplastic fluid which acts as a hydrogen… (More)

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