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RICE SALT SENSITIVE3 forms a ternary complex with JAZ and class-C bHLH factors and regulates jasmonate-induced gene expression and root cell elongation.
Plant Cell. 2013 May; 25(5):1709-25.PC

Abstract

Plasticity of root growth in response to environmental cues and stresses is a fundamental characteristic of land plants. However, the molecular basis underlying the regulation of root growth under stressful conditions is poorly understood. Here, we report that a rice nuclear factor, RICE SALT SENSITIVE3 (RSS3), regulates root cell elongation during adaptation to salinity. Loss of function of RSS3 only moderately inhibits cell elongation under normal conditions, but it provokes spontaneous root cell swelling, accompanied by severe root growth inhibition, under saline conditions. RSS3 is preferentially expressed in the root tip and forms a ternary complex with class-C basic helix-loop-helix (bHLH) transcription factors and JASMONATE ZIM-DOMAIN proteins, the latter of which are the key regulators of jasmonate (JA) signaling. The mutated protein arising from the rss3 allele fails to interact with bHLH factors, and the expression of a significant portion of JA-responsive genes is upregulated in rss3. These results, together with the known roles of JAs in root growth regulation, suggest that RSS3 modulates the expression of JA-responsive genes and plays a crucial role in a mechanism that sustains root cell elongation at appropriate rates under stressful conditions.

Authors+Show Affiliations

Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya 464-8601, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23715469

Citation

Toda, Yosuke, et al. "RICE SALT SENSITIVE3 Forms a Ternary Complex With JAZ and class-C bHLH Factors and Regulates Jasmonate-induced Gene Expression and Root Cell Elongation." The Plant Cell, vol. 25, no. 5, 2013, pp. 1709-25.
Toda Y, Tanaka M, Ogawa D, et al. RICE SALT SENSITIVE3 forms a ternary complex with JAZ and class-C bHLH factors and regulates jasmonate-induced gene expression and root cell elongation. Plant Cell. 2013;25(5):1709-25.
Toda, Y., Tanaka, M., Ogawa, D., Kurata, K., Kurotani, K., Habu, Y., Ando, T., Sugimoto, K., Mitsuda, N., Katoh, E., Abe, K., Miyao, A., Hirochika, H., Hattori, T., & Takeda, S. (2013). RICE SALT SENSITIVE3 forms a ternary complex with JAZ and class-C bHLH factors and regulates jasmonate-induced gene expression and root cell elongation. The Plant Cell, 25(5), 1709-25. https://doi.org/10.1105/tpc.113.112052
Toda Y, et al. RICE SALT SENSITIVE3 Forms a Ternary Complex With JAZ and class-C bHLH Factors and Regulates Jasmonate-induced Gene Expression and Root Cell Elongation. Plant Cell. 2013;25(5):1709-25. PubMed PMID: 23715469.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - RICE SALT SENSITIVE3 forms a ternary complex with JAZ and class-C bHLH factors and regulates jasmonate-induced gene expression and root cell elongation. AU - Toda,Yosuke, AU - Tanaka,Maiko, AU - Ogawa,Daisuke, AU - Kurata,Kyo, AU - Kurotani,Ken-Ichi, AU - Habu,Yoshiki, AU - Ando,Tsuyu, AU - Sugimoto,Kazuhiko, AU - Mitsuda,Nobutaka, AU - Katoh,Etsuko, AU - Abe,Kiyomi, AU - Miyao,Akio, AU - Hirochika,Hirohiko, AU - Hattori,Tsukaho, AU - Takeda,Shin, Y1 - 2013/05/28/ PY - 2013/5/30/entrez PY - 2013/5/30/pubmed PY - 2014/1/29/medline SP - 1709 EP - 25 JF - The Plant cell JO - Plant Cell VL - 25 IS - 5 N2 - Plasticity of root growth in response to environmental cues and stresses is a fundamental characteristic of land plants. However, the molecular basis underlying the regulation of root growth under stressful conditions is poorly understood. Here, we report that a rice nuclear factor, RICE SALT SENSITIVE3 (RSS3), regulates root cell elongation during adaptation to salinity. Loss of function of RSS3 only moderately inhibits cell elongation under normal conditions, but it provokes spontaneous root cell swelling, accompanied by severe root growth inhibition, under saline conditions. RSS3 is preferentially expressed in the root tip and forms a ternary complex with class-C basic helix-loop-helix (bHLH) transcription factors and JASMONATE ZIM-DOMAIN proteins, the latter of which are the key regulators of jasmonate (JA) signaling. The mutated protein arising from the rss3 allele fails to interact with bHLH factors, and the expression of a significant portion of JA-responsive genes is upregulated in rss3. These results, together with the known roles of JAs in root growth regulation, suggest that RSS3 modulates the expression of JA-responsive genes and plays a crucial role in a mechanism that sustains root cell elongation at appropriate rates under stressful conditions. SN - 1532-298X UR - https://www.unboundmedicine.com/medline/citation/23715469/RICE_SALT_SENSITIVE3_forms_a_ternary_complex_with_JAZ_and_class_C_bHLH_factors_and_regulates_jasmonate_induced_gene_expression_and_root_cell_elongation_ L2 - http://www.plantcell.org/cgi/pmidlookup?view=long&pmid=23715469 DB - PRIME DP - Unbound Medicine ER -