Effect of betanin synthesis on photosynthesis and tyrosine metabolism in transgenic carrot
文献类型： 外文期刊
作者： Wang, Bo 1 ; Wang, Ya-Hui 1 ; Deng, Yuan-Jie 1 ; Yao, Quan-Hong 2 ; Xiong, Ai-Sheng 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Hort, State Key Lab Crop Genet & Germplasm Enhancement &, Nanjing 210095, Peoples R China
2.Shanghai Acad Agr Sci, Biotechnol Res Inst, Shanghai Key Lab Agr Genet & Breeding, Shanghai 201106, Peoples R China
关键词： Genetically modified carrot; Betanin; Unintended effects; Photosynthesis; Transcriptome; Metabolomics
期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）
ISSN： 1471-2229
年卷期： 2023 年 23 卷 1 期
页码：
收录情况： SCI
摘要： Background Betalain is a natural pigment with important nutritional value and broad application prospects. Previously, we produced betanin biosynthesis transgenic carrots via expressing optimized genes CYP76AD1S, cDOPA5GTS and DODA1S. Betanin can accumulate throughout the whole transgenic carrots. But the effects of betanin accumulation on the metabolism of transgenic plants and whether it produces unexpected effects are still unclear. Results The accumulation of betanin in leaves can significantly improve its antioxidant capacity and induce a decrease of chlorophyll content. Transcriptome and metabolomics analysis showed that 14.0% of genes and 33.1% of metabolites were significantly different, and metabolic pathways related to photosynthesis and tyrosine metabolism were markedly altered. Combined analysis showed that phenylpropane biosynthesis pathway significantly enriched the differentially expressed genes and significantly altered metabolites. Conclusions Results showed that the metabolic status was significantly altered between transgenic and non-transgenic carrots, especially the photosynthesis and tyrosine metabolism. The extra consumption of tyrosine and accumulation of betanin might be the leading causes.
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