Plant Molecular Biology

, Volume 42, Issue 2, pp 273–278

His-Asp phosphorelay signaling: a communication avenue between plants and their environment

  • Hitoshi Sakakibara
  • Mitsutaka Taniguchi
  • Tatsuo Sugiyama
Article

DOI: 10.1023/A:1006334926388

Cite this article as:
Sakakibara, H., Taniguchi, M. & Sugiyama, T. Plant Mol Biol (2000) 42: 273. doi:10.1023/A:1006334926388

Abstract

His-Asp phosphorelay systems have been recently discovered in plants and have emerged as some of the most important signaling systems. The phosphorelay systems in plants include components with sensor (His-protein kinase) domains, His-containing phosphotransfer (HPt) domains, and receiver (response regulator) domains. Recent studies implicate phosphorelay systems in sensing and propagating signals from a wide variety of external and/or internal stimuli such as ethylene, cytokinin, and osmolarity. In maize and Arabidopsis, some response regulators are up-regulated by both cytokinins and nitrate. These findings imply that the His-Asp phosphorelay may operate in an inorganic nitrogen-signaling pathway mediated by cytokinin in plants.

cytokininethyleneHis-Asp phosphorelaynitrogen signal transduction

Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Hitoshi Sakakibara
    • 1
  • Mitsutaka Taniguchi
    • 1
  • Tatsuo Sugiyama
    • 1
  1. 1.Department of Biological Mechanisms and Functions, Graduate School of Bioagricultural SciencesNagoya University, ChikusaNagoyaJapan