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Molecular mechanism of the effect of PEG and UV stress on the metabolism of arecoline in Areca catechu callus

文献类型： 外文期刊

作者： Zheng, Yusheng 1 ; Zhao, Jin 1 ; Yang, Xingqi 1 ; Zou, Jixin 2 ; Li, Dongdong 1 ;

作者机构： 1.Hainan Univ, Sanya Nanfan Res Inst, Coll Trop Crops, Sanya 572025, Hainan, Peoples R China

2.Chinese Acad Trop Agr Sci CATAS, Rubber Res Inst, Haikou 571101, Peoples R China

关键词： Areca catechu; Callus; Arecoline; Stress treatment; RNA-seq

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.3； 五年影响因子：4.5 ）

ISSN： 0304-4238

年卷期： 2023 年 321 卷

页码：

收录情况： SCI

摘要： As the main active ingredient in Areca catechu, arecoline has broad medicinal value. Currently, research on arecoline mainly focuses on its pharmacological and toxicological effects, while its biosynthesis mechanism is rarely reported. In this study, A. catechu callus was used to systematically study the molecular mechanisms of arecoline biosynthesis in response to drought and UV stress. The results showed that under drought stress, the content of arecoline reached the highest level (0.7618%) when the concentration of PEG-6000 was 15%. Under UV stress, the content of arecoline increased and reached the highest level (0.6729%) when irradiated for 30 min daily. RNA-seq analysis of A. catechu callus tissue subjected to 15% PEG-6000 and 30 min UV stress showed that the metabolic pathways were significantly enriched in phenylpropanoid biosynthesis and biosynthesis of secondary metabolites. The experiment also verified that the addition of phenylalanine and tyrosine in the culture medium significantly increased the content of arecoline in A. catechu callus. And the effect of phenylalanine addition was more significant compared to tyrosine addition. Based on the analysis above, it can be inferred that phenylalanine is likely an important precursor for arecoline synthesis.

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