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The rice FISH BONE gene encodes a tryptophan aminotransferase, which affects pleiotropic auxin-related processes.
Plant J. 2014 Jun; 78(6):927-36.PJ

Abstract

Auxin is a fundamental plant hormone and its localization within organs plays pivotal roles in plant growth and development. Analysis of many Arabidopsis mutants that were defective in auxin biosynthesis revealed that the indole-3-pyruvic acid (IPA) pathway, catalyzed by the TRYPTOPHAN AMINOTRANSFERASE OF ARABIDOPSIS (TAA) and YUCCA (YUC) families, is the major biosynthetic pathway of indole-3-acetic acid (IAA). In contrast, little information is known about the molecular mechanisms of auxin biosynthesis in rice. In this study, we identified a auxin-related rice mutant, fish bone (fib). FIB encodes an orthologue of TAA genes and loss of FIB function resulted in pleiotropic abnormal phenotypes, such as small leaves with large lamina joint angles, abnormal vascular development, small panicles, abnormal organ identity and defects in root development, together with a reduction in internal IAA levels. Moreover, we found that auxin sensitivity and polar transport activity were altered in the fib mutant. From these results, we suggest that FIB plays a pivotal role in IAA biosynthesis in rice and that auxin biosynthesis, transport and sensitivity are closely interrelated.

Authors+Show Affiliations

Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, 113-8657, 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 available

Pub Type(s)

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

Language

eng

PubMed ID

24654985

Citation

Yoshikawa, Takanori, et al. "The Rice FISH BONE Gene Encodes a Tryptophan Aminotransferase, Which Affects Pleiotropic Auxin-related Processes." The Plant Journal : for Cell and Molecular Biology, vol. 78, no. 6, 2014, pp. 927-36.
Yoshikawa T, Ito M, Sumikura T, et al. The rice FISH BONE gene encodes a tryptophan aminotransferase, which affects pleiotropic auxin-related processes. Plant J. 2014;78(6):927-36.
Yoshikawa, T., Ito, M., Sumikura, T., Nakayama, A., Nishimura, T., Kitano, H., Yamaguchi, I., Koshiba, T., Hibara, K., Nagato, Y., & Itoh, J. (2014). The rice FISH BONE gene encodes a tryptophan aminotransferase, which affects pleiotropic auxin-related processes. The Plant Journal : for Cell and Molecular Biology, 78(6), 927-36. https://doi.org/10.1111/tpj.12517
Yoshikawa T, et al. The Rice FISH BONE Gene Encodes a Tryptophan Aminotransferase, Which Affects Pleiotropic Auxin-related Processes. Plant J. 2014;78(6):927-36. PubMed PMID: 24654985.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The rice FISH BONE gene encodes a tryptophan aminotransferase, which affects pleiotropic auxin-related processes. AU - Yoshikawa,Takanori, AU - Ito,Momoyo, AU - Sumikura,Tsuyoshi, AU - Nakayama,Akira, AU - Nishimura,Takeshi, AU - Kitano,Hidemi, AU - Yamaguchi,Isomaro, AU - Koshiba,Tomokazu, AU - Hibara,Ken-Ichiro, AU - Nagato,Yasuo, AU - Itoh,Jun-Ichi, Y1 - 2014/06/05/ PY - 2013/12/19/received PY - 2014/03/09/revised PY - 2014/03/17/accepted PY - 2014/3/25/entrez PY - 2014/3/25/pubmed PY - 2015/2/25/medline KW - FISH BONE KW - Oryza sativa L. KW - auxin sensitivity KW - indole-3-acetic acid KW - polar auxin transport KW - rice KW - tryptophan aminotransferase SP - 927 EP - 36 JF - The Plant journal : for cell and molecular biology JO - Plant J VL - 78 IS - 6 N2 - Auxin is a fundamental plant hormone and its localization within organs plays pivotal roles in plant growth and development. Analysis of many Arabidopsis mutants that were defective in auxin biosynthesis revealed that the indole-3-pyruvic acid (IPA) pathway, catalyzed by the TRYPTOPHAN AMINOTRANSFERASE OF ARABIDOPSIS (TAA) and YUCCA (YUC) families, is the major biosynthetic pathway of indole-3-acetic acid (IAA). In contrast, little information is known about the molecular mechanisms of auxin biosynthesis in rice. In this study, we identified a auxin-related rice mutant, fish bone (fib). FIB encodes an orthologue of TAA genes and loss of FIB function resulted in pleiotropic abnormal phenotypes, such as small leaves with large lamina joint angles, abnormal vascular development, small panicles, abnormal organ identity and defects in root development, together with a reduction in internal IAA levels. Moreover, we found that auxin sensitivity and polar transport activity were altered in the fib mutant. From these results, we suggest that FIB plays a pivotal role in IAA biosynthesis in rice and that auxin biosynthesis, transport and sensitivity are closely interrelated. SN - 1365-313X UR - https://www.unboundmedicine.com/medline/citation/24654985/The_rice_FISH_BONE_gene_encodes_a_tryptophan_aminotransferase_which_affects_pleiotropic_auxin_related_processes_ DB - PRIME DP - Unbound Medicine ER -