An analysis on the accumulation of serotonin indicates the positively correlation between MdT5H5 and serotonin content in apple fruits

文献类型： 外文期刊

第一作者： Lv, Lingling

作者： Lv, Lingling;Bi, Lei;Guo, Chengyu;Ma, Fengwang;Li, Cuiying;Lv, Lingling;Bi, Lei;Guo, Chengyu;Ma, Fengwang;Li, Cuiying;Feng, Jianwen;Mao, Jiayi;Duan, Tingting

作者机构：

关键词： Apple; Serotonin; Fruit development; Bagging

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.9； 五年影响因子：4.3 ）

ISSN： 0304-4238

年卷期： 2024 年 331 卷

页码：

收录情况： SCI

摘要： Serotonin (5-hydroxytryptamine, 5-HT), a tryptophan derivative, is an important functional component in fruits. Although 5-HT was found in most fruits, the accumulation characteristics of its biosynthesis in apple fruits remain unclear. Here, we conducted a large-scale survey of 148 apple fruits in 5-HT content, and investigated the biosynthesis differences of 5-HT. Our results displayed a broad skewed normal distribution of 5-HT in apple fruits. 5-HT accumulated in all tissues of apple plants, with the highest content in the seeds and the higher content in the pulp than that of the peel. A significant increase of 5-HT at ripening stage was observed in the fruits with high 5-HT content, however, the 5-HT content did not change significantly during fruit development in the fruits with low 5-HT content. The bagging reduced the 5-HT biosynthesis compared to the fruits exposed to light conditions. In addition, the expression level of MdT5H5 was positively correlated with the 5-HT content, suggesting that MdT5H5 may play a key regulatory role in the 5-HT biosynthesis in apple fruits.

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