Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (S1): 203-210. doi: 10.7668/hbnxb.20193808

Special Issue: Grape Fruits Cultivation & Physiology

• Tillage & Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Preliminary Study on the Mechanism of Laying Reflective Film to Promote the Coloring of Protected Grape

NIU Zaozhu, ZHAO Yanzhuo, CHEN Zhan, XUAN Lifeng, NIU Shuaike, LI Yanan, YANG Lili   

  1. Shijiazhuang Institute of Fruit Trees,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050061,China
  • Received:2023-06-26 Published:2023-12-28

Abstract:

To find out the effect of laying reflective film on fruit quality in facilities and the mechanism of promoting coloring,the changes of the appearance and anthocyanin content of Jingyan grape fruits were monitored with the film laid between rows,then transcriptome sequencing and differential expression gene analysis of the peels with different coloring were carried out using high-throughput sequencing and Illumina Novaseq 6000 sequencing platform.Finally,41 151 986—46 673 908 Clean reads were obtained from 12 samples,with Q30 was over 94% and Q20 was over 98%.Besides,the mapping ratio between Clean reads and grape reference genome was 92.69%—94.22%.The analysis results of differentially expressed genes (DEGS) showed that there were 3 768 DEGs in CK 0 d—CK 7 d,with 1 488 up-regulated and 2 280 down-regulated.And 5 129 in RF 0 d—RF 7 d after film mulching,with 2 048 up-regulated and 3 081 down-regulated.It showed that film mulching can increase the differential expression of genes.Compared with CK,934 DEGs were obtained after 7 days mulching,of which 441 genes were up-regulated and 493 were down-regulated.KEGG enrichment analysis showed that,a total of 179 DEGs were annotated on 64 signal pathways,which were mainly enriched in five metabolic pathways:metabolism,cellular process,environmental information processing,genetic information processing and organismal systems.Particularly,many genes vere differentially expressed in benzene propane biosynthesis,endoplasmic reticulum protein processing,plant pathogen interaction and plant hormone signaling pathway.Results showed some transcripts of PAL,F3'H and 3GT were up-expressed,and some auxin-related protein genes were down-regulated.For transcription factors,WRKY gene was mainly up-regulated,while bHLH,C2H2,NAC,MIKC-MADS,Dof were down-regulated.In conclusion,laying reflective film may improve the activity of phenylalanine ammonia-lyase(PAL)and the expression of related genes(F3'H,3GT),thus promoting anthocyanin synthesis.Meanwhile,transcriptional factors WRKY,bHLH,C2H2,MYB,NAC,MIKC-MADS and Dof may also play an important role in regulation.

Key words: Grape, Reflective film, Colour, Transcriptome, DEGs

Cite this article

NIU Zaozhu, ZHAO Yanzhuo, CHEN Zhan, XUAN Lifeng, NIU Shuaike, LI Yanan, YANG Lili. Preliminary Study on the Mechanism of Laying Reflective Film to Promote the Coloring of Protected Grape[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(S1): 203-210. doi: 10.7668/hbnxb.20193808.

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