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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (3): 635-646.doi: 10.16420/j.issn.0513-353x.2021-1190

• Research Notes • Previous Articles     Next Articles

Investigation of the Effect of Rain-shelter Cultivation on the Microbial Diversity of Berry Surface for‘Cabernet Sauvignon’Grapes

HUANG Rong1, DONG Chao1, JIANG Jiao1, QIN Yi1,2, LIU Yanlin1,2, SONG Yuyang1,2,*()   

  1. 1College of Enology,Northwest A & F University,Yangling,Shaanxi 712100,China
    2Ningxia Helan Mountain’s East Foothill Wine Experiment and Demonstration Station,Northwest A & F University,Yongning,Ningxia 750104,China
  • Received:2022-11-26 Revised:2023-01-04 Online:2023-03-25 Published:2023-04-03
  • Contact: *(E-mail:yuyangsong@nwsuaf.edu.cn

Abstract:

This study aimed to investigate the effect of rain-shelter cultivation on the microbial diversity of Cabernet Sauvignon grapes at veraison and ripening stages via high-throughput sequencing. Ascomycota(percentage > 90%) and Proteobacteria were the dominant fungal and bacterial phylum in both rain-shelter and open-field cultivation patterns. Compared with grapes being cultivated in the open-field,rain-shelter reduced the richness of Colletotrichum,therefore decreasing the risk of developing anthracnose on grape berries. In this scenario,a decreased abundance of Alternaria,which was associated with berry rot and secretion of killer toxins,was also seen. Additionally,rain-shelter conditions were more suitable for the development of Pseudomonas and Pantoea,both bacteria are capable of nitrogen-fixing. The abundance of Aspergillus and Trichothecium were commonly higher in the rain-shelter treatment than in the control. NMDS analysis with Welch’s t test suggested that rain-shelter resulted in significant differences in fungal and bacterial community structure at the veraison stage(stress < 0.1;P < 0.05). In summary,rain-shelter enhanced the colonization of microbes that are beneficial to vine growth and grape quality whilst also reducing the richness of microorganisms that could potentially cause diseases affecting grape health.

Key words: wine grape, rain-shelter cultivation, microbial community, diversity analysis, high-throughput sequencing analysis

CLC Number: