Plastid proteins crucial for symbiotic fungal and bacterial entry into plant roots

Haruko Imaizumi-Anraku, Naoya Takeda, Myriam Charpentier, Jillian Perry, Hiroki Miwa, Yosuke Umehara, Hiroshi Kouchi, Yasuhiro Murakami, Lonneke Mulder, Kate Vickers, Jodie Pike, J. Allan Downie, Trevor Wang, Shusei Sato, Erika Asamizu, Satoshi Tabata, Makoto Yoshikawa, Yoshikatsu Murooka, Guo-Jiang Wu, Masayoshi Kawaguchi, Shinji Kawasaki (), Martin Parniske and Makoto Hayashi
Additional contact information
Haruko Imaizumi-Anraku: National Institute of Agrobiological Sciences
Naoya Takeda: Graduate School of Engineering, Osaka University
Myriam Charpentier: John Innes Centre
Jillian Perry: John Innes Centre
Hiroki Miwa: John Innes Centre
Yosuke Umehara: National Institute of Agrobiological Sciences
Hiroshi Kouchi: National Institute of Agrobiological Sciences
Yasuhiro Murakami: National Institute of Agrobiological Sciences
Lonneke Mulder: John Innes Centre
Kate Vickers: John Innes Centre
Jodie Pike: John Innes Centre
J. Allan Downie: John Innes Centre
Trevor Wang: John Innes Centre
Shusei Sato: Kazusa DNA Research Institute
Erika Asamizu: Kazusa DNA Research Institute
Satoshi Tabata: Kazusa DNA Research Institute
Makoto Yoshikawa: Graduate School of Engineering, Osaka University
Yoshikatsu Murooka: Graduate School of Engineering, Osaka University
Guo-Jiang Wu: Graduate School of Science, The University of Tokyo
Masayoshi Kawaguchi: Japan Science and Technology Agency
Shinji Kawasaki: National Institute of Agrobiological Sciences
Martin Parniske: John Innes Centre
Makoto Hayashi: Graduate School of Engineering, Osaka University

Nature, 2005, vol. 433, issue 7025, 527-531

Abstract: Abstract The roots of most higher plants form arbuscular mycorrhiza, an ancient, phosphate-acquiring symbiosis with fungi, whereas only four related plant orders are able to engage in the evolutionary younger nitrogen-fixing root-nodule symbiosis with bacteria1. Plant symbioses with bacteria and fungi require a set of common signal transduction components that redirect root cell development2,3. Here we present two highly homologous genes from Lotus japonicus, CASTOR and POLLUX, that are indispensable for microbial admission into plant cells and act upstream of intracellular calcium spiking4, one of the earliest plant responses to symbiotic stimulation. Surprisingly, both twin proteins are localized in the plastids of root cells, indicating a previously unrecognized role of this ancient endosymbiont in controlling intracellular symbioses that evolved more recently.

Date: 2005
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DOI: 10.1038/nature03237

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