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Auxin biosynthesis by the YUCCA genes in rice.
Plant Physiol. 2007 Mar; 143(3):1362-71.PP

Abstract

Although indole-3-acetic acid (IAA), the predominant auxin in plants, plays a critical role in various plant growth and developmental processes, its biosynthesis and regulation have not been clearly elucidated. To investigate the molecular mechanisms of IAA synthesis in rice (Oryza sativa), we identified seven YUCCA-like genes (named OsYUCCA1-7) in the rice genome. Plants overexpressing OsYUCCA1 exhibited increased IAA levels and characteristic auxin overproduction phenotypes, whereas plants expressing antisense OsYUCCA1 cDNA displayed defects that are similar to those of rice auxin-insensitive mutants. OsYUCCA1 was expressed in almost all of the organs tested, but its expression was restricted to discrete areas, including the tips of leaves, roots, and vascular tissues, where it overlapped with expression of a beta-glucuronidase reporter gene controlled by the auxin-responsive DR5 promoter. These observations are consistent with an important role for the rice enzyme OsYUCCA1 in IAA biosynthesis via the tryptophan-dependent pathway.

Authors+Show Affiliations

Bioscience and Biotechnology Center, Nagoya University Chikusa, Nagoya Aichi, 464-8601, Japan.No 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

17220367

Citation

Yamamoto, Yuko, et al. "Auxin Biosynthesis By the YUCCA Genes in Rice." Plant Physiology, vol. 143, no. 3, 2007, pp. 1362-71.
Yamamoto Y, Kamiya N, Morinaka Y, et al. Auxin biosynthesis by the YUCCA genes in rice. Plant Physiol. 2007;143(3):1362-71.
Yamamoto, Y., Kamiya, N., Morinaka, Y., Matsuoka, M., & Sazuka, T. (2007). Auxin biosynthesis by the YUCCA genes in rice. Plant Physiology, 143(3), 1362-71.
Yamamoto Y, et al. Auxin Biosynthesis By the YUCCA Genes in Rice. Plant Physiol. 2007;143(3):1362-71. PubMed PMID: 17220367.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Auxin biosynthesis by the YUCCA genes in rice. AU - Yamamoto,Yuko, AU - Kamiya,Noriko, AU - Morinaka,Yoichi, AU - Matsuoka,Makoto, AU - Sazuka,Takashi, Y1 - 2007/01/12/ PY - 2007/1/16/pubmed PY - 2007/7/26/medline PY - 2007/1/16/entrez SP - 1362 EP - 71 JF - Plant physiology JO - Plant Physiol VL - 143 IS - 3 N2 - Although indole-3-acetic acid (IAA), the predominant auxin in plants, plays a critical role in various plant growth and developmental processes, its biosynthesis and regulation have not been clearly elucidated. To investigate the molecular mechanisms of IAA synthesis in rice (Oryza sativa), we identified seven YUCCA-like genes (named OsYUCCA1-7) in the rice genome. Plants overexpressing OsYUCCA1 exhibited increased IAA levels and characteristic auxin overproduction phenotypes, whereas plants expressing antisense OsYUCCA1 cDNA displayed defects that are similar to those of rice auxin-insensitive mutants. OsYUCCA1 was expressed in almost all of the organs tested, but its expression was restricted to discrete areas, including the tips of leaves, roots, and vascular tissues, where it overlapped with expression of a beta-glucuronidase reporter gene controlled by the auxin-responsive DR5 promoter. These observations are consistent with an important role for the rice enzyme OsYUCCA1 in IAA biosynthesis via the tryptophan-dependent pathway. SN - 0032-0889 UR - https://www.unboundmedicine.com/medline/citation/17220367/Auxin_biosynthesis_by_the_YUCCA_genes_in_rice_ L2 - http://www.plantphysiol.org/lookup/pmidlookup?view=long&pmid=17220367 DB - PRIME DP - Unbound Medicine ER -