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Differences among the Anthocyanin Accumulation Patterns and Related Gene Expression Levels in Red Pears

College of Horticulture, Northwest A&F University, Taicheng Road NO. 3, Yangling 712100, Shanxi Province, China
Authors to whom correspondence should be addressed.
Meng Wu and Jianlong Liu made the same contribution in this study.
Plants 2019, 8(4), 100;
Received: 8 March 2019 / Revised: 30 March 2019 / Accepted: 11 April 2019 / Published: 16 April 2019
PDF [2175 KB, uploaded 16 April 2019]


Differences in coloration exist among red pear cultivars. Here, we selected six red pear cultivars with different genetic backgrounds to elucidate the characteristics of fruit pigmentation. We detected anthocyanin contents and the expression levels of anthocyanin synthesis-related genes in these cultivars at different stages of fruit development. The anthocyanin contents of all six cultivars showed a rise–drop tendency. Principal component and hierarchical cluster analyses were used to distinguish the types of cultivars and the genes crucial to each anthocyanin accumulation pattern. The six cultivars were divided into three groups. Red Zaosu were clustered into one group, Red Sichou and Starkrimson into another group, and Palacer, Red Bartlett, and 5 Hao clustered into a third group. The expression levels of F3H, UFGT2, MYB10, and bHLH3 were similar among the differential coloration patterns of the six cultivars, suggesting a critical and coordinated mechanism for anthocyanin synthesis. Anthocyanin transporters (GST) and light-responsive genes, such as COP1, PIF3.1, and PIF3.2 played limited roles in the regulation of anthocyanin accumulation. This study provides novel insights into the regulation of anthocyanins synthesis and accumulation in red pears. View Full-Text
Keywords: red pear; anthocyanin; gene expression; coloration red pear; anthocyanin; gene expression; coloration

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Wu, M.; Liu, J.; Song, L.; Li, X.; Cong, L.; Yue, R.; Yang, C.; Liu, Z.; Xu, L.; Wang, Z. Differences among the Anthocyanin Accumulation Patterns and Related Gene Expression Levels in Red Pears. Plants 2019, 8, 100.

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