Affiliation:
1. College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
2. Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, China
Abstract
Peroxidase (Prx)-related genes are reported to be involved in the metabolism of hydrogen peroxide (H2O2) in plants. Here, we found that the expression of the PdePrx12 gene was upregulated in wild-type (WT) poplar line NL895 infected with the pathogens Botryosphaeria dothidea strain 3C and Alternaria alternata strain 3E. The PdePrx12 gene was cloned in the poplar line NL895 and its overexpression (OE) and reduced-expression (RE) vectors were constructed. OE and RE transgenic lines were then generated. The H2O2 content in the leaves was measured by DAB staining and spectrophotometric analysis, and the data revealed that the OE line had a reduced H2O2 content, whereas the RE line had an increased H2O2 content. These transgenic and WT plants were also inoculated with the 3C/3E pathogens. The leaf area infected by pathogen 3C/3E was determined and the OE line was found to have a larger area of infection, whereas the RE line was found to have a smaller area of infection. This result suggested PdePRX12 is involved in disease resistance in poplar. Given these results, this study demonstrated that when poplar is infected by pathogens, the expression of PdePrx12 is inhibited, leading to an increase in H2O2 content, thereby enhancing disease resistance.
Funder
National Natural Science Foundationof China
Subject
Plant Science,Ecology, Evolution, Behavior and Systematics,Microbiology (medical)
Reference36 articles.
1. Mechanisms for the generation of reactive oxygen species in plant defence—A broad perspective;Bolwell;Physiol. Mol. Plant Pathol.,1997
2. Huchzermeyer, B., Menghani, E., Khardia, P., and Shilu, A. (2022). Metabolic Pathway of Natural Antioxidants, Antioxidant Enzymes and ROS Providence. Antioxidants, 11.
3. The function of peroxiredoxins in plant organelle redox metabolism;Dietz;J. Exp. Bot.,2006
4. Performing the paradoxical: How plant peroxidases modify the cell wall;Passardi;Trends Plant Sci.,2004
5. Diverse functions and reactions of class III peroxidases;Shigeto;New Phytol.,2016
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献