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Journal Articles

SMAP2 protein potentially mediates the response to synthetic auxin, 2,4-D, in ${it Arabidopsis thaliana}$

Nakasone, Akari; Kawai, Maki*; Kiyosue, Tomohiro*; Narumi, Issei; Uchimiya, Hirofumi*; Ono, Yutaka

JAEA-Review 2009-041, JAEA Takasaki Annual Report 2008, P. 65, 2009/12

Journal Articles

A Gene encoding ${it SMALL ACIDIC PROTEIN 2}$ potentially mediates the response to synthetic auxin, 2,4-dichlorophenoxyacetic acid, in ${it Arabidopsis thaliana}$

Nakasone, Akari; Yamada, Maki*; Kiyosue, Tomohiro*; Narumi, Issei; Uchimiya, Hirofumi*; Ono, Yutaka

Journal of Plant Physiology, 166(12), p.1307 - 1313, 2009/08

 Times Cited Count:4 Percentile:13.17(Plant Sciences)

Journal Articles

Genetic characterization of mutants resistant to the antiauxin ${it p}$-chlorophenoxyisobutyric acid reveals that ${it AAR3}$, a gene encoding a DCN1-like protein, regulates responses to the synthetic auxin 2,4-dichlorophenoxyacetic acid in Arabidopsis roots

Biswas, K. K.*; Oura, Chiharu*; Higuchi, Kanako*; Miyazaki, Yuji*; Nguyen, V. V.*; Rahman, A.*; Uchimiya, Hirofumi*; Kiyosue, Tomohiro*; Koshiba, Tomokazu*; Tanaka, Atsushi; et al.

Plant Physiology, 145(3), p.773 - 785, 2007/11

 Times Cited Count:37 Percentile:66.24(Plant Sciences)

We screened mutants for root growth resistance to a putative antiauxin, PCIB, which inhibits auxin action by interfering the upstream auxin signaling events. Eleven PCIB-resistant mutants were obtained. Genetic mapping indicates that the mutations are located in at least 5 independent loci including two known auxin-related loci, ${it TIR1}$ and ${it AtCUL1}$. ${it antiauxin-resistant}$ mutants (${it aar}$s) ${it aar3-1}$, ${it aar4}$ and ${it aar5}$ were also resistant to 2,4-D as shown by a root growth assay. Positional cloning of ${it aar3-1}$ revealed that the ${it AAR3}$ gene encodes a protein with a domain of unknown function (DUF298), which has not previously been implicated in auxin signaling. The protein has a putative nuclear localization signal and shares homology with the DCN-1 protein through the DUF298 domain. The results also indicate that PCIB can facilitate the identification of factors involved in auxin or auxin-related signaling.

Oral presentation

${it AAR3}$, a gene encoding a DCN1-like protein, regulates responses to the synthetic auxin 2,4-dichlorophenoxyacetic acid in arabidopsis roots

Ono, Yutaka; Biswas, K. K.*; Miyazaki, Yuji*; Kiyosue, Tomohiro*; Narumi, Issei

no journal, , 

We have screened Arabidopsis mutants for root growth resistance to a putative antiauxin, ${it p }$-chlorophenoxyisobutyric acid (PCIB). We have successfully isolated at least three novel antiauxin-resistant mutants (${it aars}$). The ${it aar3}$, mutant was also resistant to 2,4-D as shown by a root growth assay. The ${it AAR3}$ gene encodes a protein with a domain of unknown function (DUF298). The protein has a putative nuclear localization signal and its nuclear localization was confirmed by a protoplast transient assay. The protein shares homology with the DEFECTIVE IN CULLIN NEDDYLATION-1 protein through the DUF298 domain. However, no significant difference in the auxin responsive markers, ${it DR5:GUS}$or ${it HS:AXR3NT-GUS}$, was observed between the wild type and ${it aar3}$, suggesting that the ${it AAR3}$ gene regulates 2,4-D sensitivity through a previously uncharacterized mechanism.

Oral presentation

A Gene encoding a DCN1 (Defective in Cullin Neddylation-1)-like protein regulates responses to the synthetic auxin 2,4-dichlorophenoxyacetic acid in arabidopsis roots

Ono, Yutaka; Biswas, K. K.*; Nakasone, Akari; Miyazaki, Yuji*; Kiyosue, Tomohiro*; Narumi, Issei

no journal, , 

We have successfully isolated a novel mutants (${it aar3-1}$), which was resistant to synthetic auxin 2,4-dichlorophenoxyacetic acid as shown by a root growth assay. Positional cloning revealed that the AAR3 gene encodes a nuclear localized protein that shares homology with the Defective in Cullin Neddylation-1 (DCN1) protein through the PONY domain. The result suggested that the Arabidopsis DCN1-like protein (AAR3) regulates responses to 2,4-dichlorophenoxyacetic acid in roots.

Oral presentation

SMAP2 protein is involved in the sensitivity of Arabidopsis root to synthetic auxin 2,4-D

Nakasone, Akari; Uchimiya, Hirofumi*; Narumi, Issei; Ono, Yutaka; Kawai, Maki*; Kiyosue, Tomohiro*

no journal, , 

no abstracts in English

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