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Effects of Methyl Jasmonate on Fruit Coloration and Quality Improvement in Pears (Pyrus bretschneideri)

文献类型： 外文期刊

作者： Li, Bo 1 ; Zhang, Xiangzhan 1 ; Han, Chunhong 1 ; Duan, Ruiwei 1 ; Yang, Jian 1 ; Xue, Huabai 1 ;

作者机构： 1.Chinese Acad Agr Sci, Zhengzhou Fruit Res Inst, Natl Key Lab Germplasm Innovat & Utilizat Hort Cro, Zhengzhou 450009, Peoples R China

2.Chinese Acad Agr Sci, Zhengzhou Fruit Res Inst, Key Lab Fruit Breeding Technol, Minist Agr & Rural Affairs, Zhengzhou 450009, Peoples R China

3.Chinese Acad Agr Sci, Zhengzhou Fruit Res Inst, Henan Key Lab Fruit & Cucurbit Biol, Zhengzhou 450009, Peoples R China

4.Henan Univ Sci & Technol, Coll Hort & Plant Conservat, Luoyang 471023, Peoples R China

关键词： red-blushed pear; MeJA; anthocyanin; inner quality; transcript analysis

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 13 卷 9 期

页码：

收录情况： SCI

摘要： Red-skinned pears with a bright red color and abundant health benefits are favored by consumers. However, fruit coloration and inner quality are usually affected by adverse factors, which lead to a decline in fruit quality and commerciality. Methyl jasmonate (MeJA) has been reported to be involved in many plant processes, including anthocyanin accumulation, while the value of MeJA application for fruit coloration and quality improvement in red-skinned pears is still largely unclear. The application of 0, 0.5, 1.0, or 2.0 mM MeJA at different fruit development stages significantly promoted red coloration in 'Danxiahong' pears. Moreover, MeJA treatment increased the fruit soluble solids, improved the total sugar content, decreased the fruit acid content, and significantly increased the total sugar/total acid ratio. However, no significant effect was observed on the fruit's shape or longitudinal or transverse diameters. RT-qPCR analysis indicated that the expression of anthocyanin biosynthetic regulatory and structural genes, including PbrMYB10, PbrbHLH3, PbrWD40, PbrPAL, PbrCHI, PbrDFR, and other genes, was induced by MeJA treatments. Overall, our findings demonstrate that the application of MeJA plays a significant role in promoting anthocyanin accumulation in pear peels, leading to enhanced fruit coloration. Furthermore, MeJA treatment also positively impacts the improvement of the inner fruit quality. These results not only provide valuable insights into the mechanism of MeJA-mediated coloration but also contribute to a better understanding of the overall role of MeJA in pear fruit development and quality enhancement.

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