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Roles of YUCCAs in auxin biosynthesis and drought stress responses in plants.
Plant Signal Behav. 2013 Jun; 8(6):e24495.PS

Abstract

Auxin, a plant hormone, plays crucial roles in diverse aspects of plant growth and development reacting to and integrating environmental stimuli. Indole-3-acetic acid (IAA) is the major plant auxin that is synthesized by members of the YUCCA (YUC) family of flavin monooxygenases that catalyse a rate-limiting step. Although the paths to IAA biosynthesis are characterized in Arabidopsis, little is known about the corresponding components in potato. Recently, we isolated eight putative StYUC (Solanum tuberosum YUCCA) genes and five putative tryptophan aminotransferase genes in comparison to those found in Arabidopsis. (1) The specific domains of YUC proteins were well conserved in all StYUC amino acid sequences. Transgenic potato (Solanum tuberosum cv. Jowon) overexpressing AtYUC6 showed high-auxin and enhanced drought tolerance phenotypes. The transgenic potatoes also exhibited reduced levels of ROS (reactive oxygen species) compared to control plants. We therefore propose that YUCCA and TAA families in potato would function in the auxin biosynthesis. The overexpression of AtYUC6 in potato establishes enhanced drought tolerance through regulated ROS homeostasis.

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Authors+Show Affiliations

Cheol Park H
Division of Applied Life Science (BK21 program); Plant Molecular Biology and Biotechnology Research Center; Gyeongsang National University; Jinju, Korea.
Cha JY
No affiliation info available
Yun DJ
No affiliation info available

MeSH

ArabidopsisArabidopsis ProteinsDroughtsIndoleacetic AcidsMixed Function OxygenasesPlants, Genetically ModifiedReactive Oxygen SpeciesSolanum tuberosumStress, PhysiologicalUp-RegulationWater

Pub Type(s)

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

Language

eng

PubMed ID

23603963

Citation

Cheol Park, Hyeong, et al. "Roles of YUCCAs in Auxin Biosynthesis and Drought Stress Responses in Plants." Plant Signaling & Behavior, vol. 8, no. 6, 2013, pp. e24495.
Cheol Park H, Cha JY, Yun DJ. Roles of YUCCAs in auxin biosynthesis and drought stress responses in plants. Plant Signal Behav. 2013;8(6):e24495.
Cheol Park, H., Cha, J. Y., & Yun, D. J. (2013). Roles of YUCCAs in auxin biosynthesis and drought stress responses in plants. Plant Signaling & Behavior, 8(6), e24495. https://doi.org/10.4161/psb.24495
Cheol Park H, Cha JY, Yun DJ. Roles of YUCCAs in Auxin Biosynthesis and Drought Stress Responses in Plants. Plant Signal Behav. 2013;8(6):e24495. PubMed PMID: 23603963.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Roles of YUCCAs in auxin biosynthesis and drought stress responses in plants. AU - Cheol Park,Hyeong, AU - Cha,Joon-Yung, AU - Yun,Dae-Jin, Y1 - 2013/04/09/ PY - 2013/4/23/entrez PY - 2013/4/23/pubmed PY - 2014/7/6/medline KW - ArabidopsisYUCCA6 KW - IAA KW - IAM KW - IAOx KW - IPA KW - ROS KW - TAA KW - TAM KW - Trp KW - auxin KW - drought KW - indole-3-acetamide KW - indole-3-acetic acid KW - indole-3-pyruvic acid KW - potato KW - reactive oxygen species KW - the indole-3-acetaldoxime KW - tryptamine KW - tryptophan KW - tryptophan aminotransferase of Arabidopsis SP - e24495 EP - e24495 JF - Plant signaling & behavior JO - Plant Signal Behav VL - 8 IS - 6 N2 - Auxin, a plant hormone, plays crucial roles in diverse aspects of plant growth and development reacting to and integrating environmental stimuli. Indole-3-acetic acid (IAA) is the major plant auxin that is synthesized by members of the YUCCA (YUC) family of flavin monooxygenases that catalyse a rate-limiting step. Although the paths to IAA biosynthesis are characterized in Arabidopsis, little is known about the corresponding components in potato. Recently, we isolated eight putative StYUC (Solanum tuberosum YUCCA) genes and five putative tryptophan aminotransferase genes in comparison to those found in Arabidopsis. (1) The specific domains of YUC proteins were well conserved in all StYUC amino acid sequences. Transgenic potato (Solanum tuberosum cv. Jowon) overexpressing AtYUC6 showed high-auxin and enhanced drought tolerance phenotypes. The transgenic potatoes also exhibited reduced levels of ROS (reactive oxygen species) compared to control plants. We therefore propose that YUCCA and TAA families in potato would function in the auxin biosynthesis. The overexpression of AtYUC6 in potato establishes enhanced drought tolerance through regulated ROS homeostasis. SN - 1559-2324 UR - https://www.unboundmedicine.com/medline/citation/23603963/Roles_of_YUCCAs_in_auxin_biosynthesis_and_drought_stress_responses_in_plants_ L2 - https://www.tandfonline.com/doi/full/10.4161/psb.24495 DB - PRIME DP - Unbound Medicine ER -