Zhonggang Li

Hainan Institute of Tropical Agricultural Resources, Sanya, 572025, Hainan, China
Author    Correspondence author
Genomics and Applied Biology, 2025, Vol. 16, No. 1   
Received: 20 Dec., 2024    Accepted: 26 Jan., 2025    Published: 21 Feb., 2025

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Due to its excellent environmental adaptability and high economic value, yellow pitaya has gradually become an important tropical cash crop. However, the current research on the polyploidization of yellow pitaya genome and its adaptive evolution mechanism is relatively limited. This study mainly aims to reveal the relationship between gene amplification events and stress resistance during the polyploidization of yellow pitaya genome, and explore its adaptation mechanism under environmental pressures such as drought, high temperature, and salt stress. The content of the article includes the type of polyploidization of yellow pitaya genome, the molecular pathway of gene amplification, and the role in regulating the expression of anti-reverse genes. The study has shown that yellow pitaya has experienced multiple genomic replication events, resulting in a large number of amplifications of stress-resistant related genes, among which gene families such as zinc finger protein and NAC transcription factors are particularly outstanding, and the improvement of these gene amplification events to plant stress-resistant ability is confirmed through multi-level bioinformatic analysis. Combined with the research results of previous generations, we will further use multiplier cultivation of new inverse-resistant varieties of yellow pitaya to provide theoretical basis and technical support.

Yellow pitaya; Genome polyploidization; Gene amplification; Stress tolerance; Adaptive evolution