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MYB94 and MYB96 Additively Activate Cuticular Wax Biosynthesis in Arabidopsis.
Plant Cell Physiol. 2016 Nov; 57(11):2300-2311.PC

Abstract

Aerial plant surfaces are coated by a cuticular wax layer to protect against environmental stresses, such as desiccation. In this study, we investigated the functional relationship between MYB94 and MYB96 transcription factors involved in cuticular wax biosynthesis. Both MYB94 and MYB96 transcripts were abundantly expressed in the aerial organs of Arabidopsis, and significantly induced at the same or similar time points under conditions of drought. MYB94 complemented the wax-deficient phenotype of the myb96 loss-of-function mutant under both well-watered and drought stress conditions. The magnitude of decrease in total wax load in the myb94 myb96 double mutant was almost equal to the sum of the reduced wax loads in the individual myb94 and myb96 mutants under both conditions. Leaves of the myb94 myb96 mutant lost water through the cuticle faster than those of myb94 or myb96 plants. Transcript levels of wax biosynthetic genes were decreased in the single mutants, and further reduced in the double mutant, relative to the wild type, under drought and ABA treatment conditions. MYB94 and MYB96 interact with the same regions containing MYB consensus motifs in the promoter regions of wax biosynthetic genes. The data collectively indicate that MYB94 and MYB96 exert an additive effect on cuticular wax biosynthesis, which may represent an efficient adaptive mechanism of response to drought in plants.

Authors+Show Affiliations

Department of Bioenergy Science and Technology, Chonnam National University, Gwangju, 61186 Republic of Korea.Department of Bioindustry and Bioresource Engineering, Plant Engineering Research Institute, Sejong University, Seoul, 05006 Republic of Korea.Department of Bioenergy Science and Technology, Chonnam National University, Gwangju, 61186 Republic of Korea mcsuh@chonnam.ac.kr.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27577115

Citation

Lee, Saet Buyl, et al. "MYB94 and MYB96 Additively Activate Cuticular Wax Biosynthesis in Arabidopsis." Plant & Cell Physiology, vol. 57, no. 11, 2016, pp. 2300-2311.
Lee SB, Kim HU, Suh MC. MYB94 and MYB96 Additively Activate Cuticular Wax Biosynthesis in Arabidopsis. Plant Cell Physiol. 2016;57(11):2300-2311.
Lee, S. B., Kim, H. U., & Suh, M. C. (2016). MYB94 and MYB96 Additively Activate Cuticular Wax Biosynthesis in Arabidopsis. Plant & Cell Physiology, 57(11), 2300-2311.
Lee SB, Kim HU, Suh MC. MYB94 and MYB96 Additively Activate Cuticular Wax Biosynthesis in Arabidopsis. Plant Cell Physiol. 2016;57(11):2300-2311. PubMed PMID: 27577115.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - MYB94 and MYB96 Additively Activate Cuticular Wax Biosynthesis in Arabidopsis. AU - Lee,Saet Buyl, AU - Kim,Hyun Uk, AU - Suh,Mi Chung, Y1 - 2016/08/29/ PY - 2016/06/02/received PY - 2016/08/10/accepted PY - 2016/9/1/pubmed PY - 2017/3/28/medline PY - 2016/9/1/entrez KW - Arabidopsis KW - Cuticle KW - Cuticular wax KW - MYB94 KW - MYB96 KW - Transcription factor SP - 2300 EP - 2311 JF - Plant & cell physiology JO - Plant Cell Physiol VL - 57 IS - 11 N2 - Aerial plant surfaces are coated by a cuticular wax layer to protect against environmental stresses, such as desiccation. In this study, we investigated the functional relationship between MYB94 and MYB96 transcription factors involved in cuticular wax biosynthesis. Both MYB94 and MYB96 transcripts were abundantly expressed in the aerial organs of Arabidopsis, and significantly induced at the same or similar time points under conditions of drought. MYB94 complemented the wax-deficient phenotype of the myb96 loss-of-function mutant under both well-watered and drought stress conditions. The magnitude of decrease in total wax load in the myb94 myb96 double mutant was almost equal to the sum of the reduced wax loads in the individual myb94 and myb96 mutants under both conditions. Leaves of the myb94 myb96 mutant lost water through the cuticle faster than those of myb94 or myb96 plants. Transcript levels of wax biosynthetic genes were decreased in the single mutants, and further reduced in the double mutant, relative to the wild type, under drought and ABA treatment conditions. MYB94 and MYB96 interact with the same regions containing MYB consensus motifs in the promoter regions of wax biosynthetic genes. The data collectively indicate that MYB94 and MYB96 exert an additive effect on cuticular wax biosynthesis, which may represent an efficient adaptive mechanism of response to drought in plants. SN - 1471-9053 UR - https://www.unboundmedicine.com/medline/citation/27577115/MYB94_and_MYB96_Additively_Activate_Cuticular_Wax_Biosynthesis_in_Arabidopsis_ DB - PRIME DP - Unbound Medicine ER -