, a root regulator associated with the long-distance control of nodulation in

Magori, Shimpei*; Kira, Erika*; Shibata, Satoshi*; Umehara, Yosuke*; Kochi, Hiroshi*; Hase, Yoshihiro; Tanaka, Atsushi; Sato, Shusei*; Tabata, Satoshi*; Kawaguchi, Masayoshi*

Molecular Plant-Microbe Interactions, 22(3), p.259 - 268, 2009/03

https://doi.org/10.1094/MPMI-22-3-0259

Legume plants tightly control the development and number of symbiotic root nodules. In , this regulation required in the shoots, suggesting that a long-distance communication between the shoots and the roots may exist. To better understand its molecular basis, we isolated and characterized a novel hypernodulating mutant of named (). Reciprocal grafting with wild type showed that hypernodulation is determined by the root genotype. Moreover, grafting a shoot onto a rootstock did not exhibit any obvious additive effects on the nodule number. These observations indicate that a shoot factor and a root factor participate in the same genetic pathway which governs the long-distance signaling of nodule number control. may function downstream of and the gene product might serve as a receptor or mediator of unknown mobile signal molecules that are transported from the shoots to the roots.

Roles of arabidopsis and in translation synthesis

Takahashi, Shinya; Sakamoto, Ayako; Sato, Shusei*; Kato, Tomohiko*; Tabata, Satoshi*; Tanaka, Atsushi

Plant Physiology, 138(2), p.870 - 881, 2005/06

https://doi.org/10.1104/pp.105.060236

The error-prone DNA translation synthesis (error-prone TLS) has been well characterized in yeast and mammalians, but not in higher plants. Recent finding of an -disrupted mutant () in Arabidopsis suggested that the error-prone TLS is significant for tolerance to DNA damages in higher plant. To clarify the details of the error-prone TLS in higher plants, we analyzed the T-DNA inserted Arabidopsis mutants defective in or genes, which are thought to be involved in the error-prone TLS system. The mutant () was sensitive to UV-B and cisplatin. The mutant () was sensitive to long-term UV-B and cisplatin. These results suggest TLS mechanism exists in a higher plant and show that and have important roles in tolerating exposure to DNA-damaging agents, but their function might be redundant.

A SNARE protein expressed in vascular tissue affects symbiotic nitrogen fixation in Lotus japonicus nodules

Hakoyama, Tsuneo*; Oi, Ryo*; Hazuma, Kazuya*; Suga, Eri*; Adachi, Yuka*; Kobayashi, Mayumi*; Akai, Rie*; Sato, Shusei*; Fukai, Eigo*; Tabata, Satoshi*; et al.

no journal, ,