Transcriptional Activation of Anthocyanin Biosynthesis in Developing Fruit of Blueberries (Vaccinium corymbosum L.) by Preharvest and Postharvest UV Irradiation

被引：56

作者：

Yang, Junfeng ^{[1
,2
,3
]}

Li, Binbin ^{[1
]}

Shi, Wenjun ^{[1
]}

Gong, Zhongzhi ^{[1
]}

Chen, Lu ^{[1
]}

Hou, Zhixia ^{[1
]}

机构：

[1] Beijing Forestry Univ, Res & Dev Ctr Blueberry, Minist Educ, Key Lab Silviculture & Conservat, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Inst Bot, Beijing Bot Garden, Key Lab Plant Resources, Beijing 100093, Peoples R China

[3] Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2018年 / 66卷 / 42期

关键词：

anthocyanin biosynthesis; anthocyanin gene expression; enzyme activity; pre- and postharvest UV radiation; MYB transcription factor; ULTRAVIOLET-B RADIATION; GRAPE BERRIES; GENE-EXPRESSION; VITIS-VINIFERA; ANTIOXIDANT CAPACITY; RED COLORATION; PATHWAY GENES; C IRRADIATION; APPLE SKIN; CULTIVARS;

D O I：

10.1021/acs.jafc.8b03081

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The effect and mechanism of preharvest and postharvest ultraviolet (UV) irradiation on anthocyanin biosynthesis during blueberry development were investigated. The results showed that preharvest UV-B,C and postharvest UV-A,B,C irradiation significantly promoted anthocyanin biosynthesis and the transcripts of late biosynthetic genes (LBG) VcDFR, VcANS, VcUFGT, and VcMYB transcription factor as well as DFR and UFGT activities in anthocyanin pathway in a UV wavelength- and developmental stage-dependent manner. VcMYB expression was positively correlated with that of VcANS and VcUFGT and coincided with anthocyanin biosynthesis responding to the UV radiation. Sugar decreased during postharvest but increased during preharvest UV radiation in mature fruit. Our results indicate that UV-responsive production of anthocyanins is mainly caused by the activation of anthocyanin downstream pathway genes, which could be upregulated by VcMYB. Furthermore, different potential response mechanisms may exist between preharvest and postharvest UV radiation in blueberries, involving a systemic response in living plants and a nonsystemic response in postharvest fruit.

引用

页码：10931 / 10942

页数：12

共 63 条

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