1. Expression of the Arabidopsis<scp>WRINKLED</scp>1 transcription factor leads to higher accumulation of palmitate in soybean seed
- Author
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Hanh Nguyen, Shen Bayon de Noyer, Edgar B. Cahoon, Tong Wang, Lili Hou, Ozan N. Ciftci, Hoang Le Khang, Pamela A. Vogel, Taity Changa, Thomas E. Clemente, and Hyunwoo Park
- Subjects
0106 biological sciences ,0301 basic medicine ,food.ingredient ,Glycine max ,Transgene ,Palmitates ,Plant Science ,Biology ,01 natural sciences ,Soybean oil ,Palmitic acid ,03 medical and health sciences ,chemistry.chemical_compound ,food ,Thioesterase ,Stearate ,palmitic acid ,Plant Oils ,Food science ,high solids soybean oil ,Research Articles ,chemistry.chemical_classification ,Arabidopsis Proteins ,Wild type ,food and beverages ,Plants, Genetically Modified ,030104 developmental biology ,chemistry ,Seeds ,Soybeans ,Expression cassette ,Agronomy and Crop Science ,Transcription Factors ,Research Article ,010606 plant biology & botany ,Biotechnology ,Polyunsaturated fatty acid - Abstract
Summary Soybean (Glycine max [L.] Merr.) is a commodity crop highly valued for its protein and oil content. The high percentage of polyunsaturated fatty acids in soybean oil results in low oxidative stability, which is a key parameter for usage in baking, high temperature frying applications, and affects shelf life of packaged products containing soybean oil. Introduction of a seed‐specific expression cassette carrying the Arabidopsis transcription factor WRINKLED1 (AtWRI1) into soybean, led to seed oil with levels of palmitate up to approximately 20%. Stacking of the AtWRI1 transgenic allele with a transgenic locus harbouring the mangosteen steroyl‐ACP thioesterase (GmFatA) resulted in oil with total saturates up to 30%. The creation of a triple stack in soybean, wherein the AtWRI1 and GmFatA alleles were combined with a FAD2‐1 silencing allele led to the synthesis of an oil with 28% saturates and approximately 60% oleate. Constructs were then assembled that carry a dual FAD2‐1 silencing element/GmFatA expression cassette, alone or combined with an AtWRI1 cassette. These plasmids are designated pPTN1289 and pPTN1301, respectively. Transgenic events carrying the T‐DNA of pPTN1289 displayed an oil with stearate levels between 18% and 25%, and oleate in the upper 60%, with reduced palmitate (
- Published
- 2019
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