Overexpression of PavHIPP16 from Prunus Avium Enhances Cold Stress Tolerance in Transgenic Tobacco

Overview

Journal BMC Plant Biol

Publisher Biomed Central

Specialty Biology

Date 2024 Jun 11

PMID 38862890

Authors

Runrun Yu

Qiandong Hou

Hong Deng

Ling Xiao

Xiaowei Cai

Chunqiong Shang

Guang Qiao

Affiliations

Soon will be listed here.

Abstract

Background: The heavy metal-associated isoprenylated plant protein (HIPP) is an important regulatory element in response to abiotic stresses, especially playing a key role in low-temperature response.

Results: This study investigated the potential function of PavHIPP16 up-regulated in sweet cherry under cold stress by heterologous overexpression in tobacco. The results showed that the overexpression (OE) lines' growth state was better than wild type (WT), and the germination rate, root length, and fresh weight of OE lines were significantly higher than those of WT. In addition, the relative conductivity and malondialdehyde (MDA) content of the OE of tobacco under low-temperature treatment were substantially lower than those of WT. In contrast, peroxidase (POD), superoxide dismutase (SOD), catalase (CAT) activities, hydrogen peroxide (HO), proline, soluble protein, and soluble sugar contents were significantly higher than those of WT. Yeast two-hybrid assay (Y2H) and luciferase complementation assay verified the interactions between PavbHLH106 and PavHIPP16, suggesting that these two proteins co-regulated the cold tolerance mechanism in plants. The research results indicated that the transgenic lines could perform better under low-temperature stress by increasing the antioxidant enzyme activity and osmoregulatory substance content of the transgenic plants.

Conclusions: This study provides genetic resources for analyzing the biological functions of PavHIPPs, which is important for elucidating the mechanisms of cold resistance in sweet cherry.

Citing Articles

Confers Cold Stress Tolerance in via Regulation of Flavonoid Biosynthesis.

Yu Q, Liu C, Sun J, Ding M, Ding Y, Xu Y Int J Mol Sci. 2024; 25(18).

PMID: 39337331 PMC: 11432407. DOI: 10.3390/ijms25189843.

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