ArticlePlant cell reports2011
Identification of functional BrFAD2-1 gene encoding microsomal delta-12 fatty acid desaturase from Brassica rapa and development of Brassica napus containing high oleic acid contents.
Article in Plant cell reports, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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25 citing papers in PubMed, 70 citations in OpenAlex.
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- Functional identification of oleate 12-desaturase and ω-3 fatty acid desaturase genes from Perilla frutescens var. frutescens.Plant cell reports · 2016Article
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- Senescence-inducible LEC2 enhances triacylglycerol accumulation in leaves without negatively affecting plant growth.Plant biotechnology journal · 2015Article
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Authors and funding
7 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Microsomal delta-12 fatty acid desaturase (FAD2) functions in the first committed step of the biosynthesis of polyunsaturated fatty acids via the desaturation of oleic acid to linoleic acid. In this study, two FAD2 genes were identified through genome-wide analysis of Brassica rapa. One BrFAD2-1 gene harbors functional sequence information, but another BrFAD2-2 gene has mutations that generated a premature stop codon, rendering it nonfunctional. From a database of 120,000 B. rapa expressed sequence tags, we determined that all sequences coding for FAD2 corresponded to the BrFAD2-1 gene. The BrFAD2-1 protein was shown to share high sequence homology (71-99%) with FAD2 proteins from other plant species. An intron in the 5'-untranslated region and three histidine boxes in the protein, which are characteristic of plant FAD2 genes, have been well-conserved. BrFAD2-1 transcripts were detected in various organs of B. rapa. When a pBrFAD2-1:mRFP construct was introduced into tobacco epidermal cells, the fluorescent signal was noted in the endoplasmic reticulum. Ectopic expression of BrFAD2-1:mRFP complemented the Arabidopsis fad2-2 mutant. Finally, transgenic Korean rapeseed Tammi containing high oleic acid contents (78 mol%) was developed via the expression of the BrFAD2-1 gene in an antisense orientation. The data demonstrate that B. rapa harbors only one functional FAD2 that can be utilized for the development of the high-oleic acid Korean rapeseed cultivar Tammi, which might be useful for both human consumption and industrial applications.
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