Integrated metabolomic and transcriptomic analysis reveals factors underlying differences in fruit quality between Fragaria nilgerrensis and Fragaria pentaphylla

Autor: Junmin Li, Jincheng Shen, Wanlu Shao, Hongfei Lu
Rok vydání: 2021
Předmět:
Zdroj: Journal of the Science of Food and Agriculture. 102:3287-3296
ISSN: 1097-0010
0022-5142
Popis: BACKGROUND Strawberries have become one of the most popular fruits because of their unique flavor and high nutritional value. Fruit quality and price are the most important criteria that determine consumer acceptability. Fragaria nilgerrensis and F. pentaphylla are two wild Asian diploid strawberry species that differ in fruit color, and its taste and aroma. To understand the molecular mechanisms involved in the formation of high-quality strawberry fruit, we integrated transcriptomics and metabolomics research methods to compare the metabolic and biosynthetic mechanisms of the two Fragaria species. RESULTS F. nilgerrensis fruit has higher amino acid and lipid contents and a higher sugar-to-acid ratio compared with F. pentaphylla fruit, underlying their superior nutritional value, aroma, firmness, and taste. Compared to F. nilgerrensis fruit, F. pentaphylla fruit contained more flavonoids, indicating its enhanced color and health benefits. In addition, candidate structural genes that regulate the biosynthesis of flavonoids, amino acids, and glycerophospholipids in the two strawberry fruit were screened. CONCLUSIONS The difference in aroma, firmness, and taste between F. nilgerrensis fruit and F. pentaphylla fruit is probably owing to difference in their amino acid and lipid content, as well as the difference in their sugar-to-acid ratio. Eight key structural genes that may play important roles in the biosynthesis of amino acids, lipids and flavonoids were identified. This article is protected by copyright. All rights reserved.
Databáze: OpenAIRE
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