StPOPA, encoding an anionic peroxidase, enhances potato resistance against Phytophthora infestans

Late blight, caused by Phytophthora infestans , is the most devastating potato disease worldwide and results in catastrophic production losses. Reactive oxygen species (ROS) are signal molecules utilized at the early stage of plant immunity. Specifically, anionic peroxidases are reported to be invol...

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Bibliographic Details
Published in:Molecular breeding 2020-02, Vol.40 (2), Article 16
Main Authors: Yang, Yu, Jiang, Rui, Wang, Hongyang, Tian, Zhendong, Xie, Conghua
Format: Article
Language:English
Subjects:
Apoptosis
Biomedical and Life Sciences
Biotechnology
Blight
Cell death
Cell walls
Cytoplasm
Disease resistance
Genetic improvement
Immunity
Jasmonic acid
Late blight
Life Sciences
Molecular biology
Peroxidase
Phytophthora infestans
Plant biology
Plant Genetics and Genomics
Plant immunity
Plant Pathology
Plant Physiology
Plant Sciences
Potatoes
Reactive oxygen species
Vegetables
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Summary:Late blight, caused by Phytophthora infestans , is the most devastating potato disease worldwide and results in catastrophic production losses. Reactive oxygen species (ROS) are signal molecules utilized at the early stage of plant immunity. Specifically, anionic peroxidases are reported to be involved in many plants’ defense systems. However, there is limited information about the function of anionic peroxidase genes in potato immunity. Here, we report that StPOPA , a gene encoding a suberization-associated anionic peroxidase, was induced by P. infestans infection, mechanical damage, as well as jasmonic acid and ethylene treatments. Overexpression of StPOPA gene in potato enhanced potato resistance against P. infestans by promoting the accumulation of callose in the cell wall and ROS in the cytoplasm, and then the callose and ROS restricted the infection and spreading of the disease possibly by purposeful programmed cell death. Our results suggest that StPOPA plays a positive role in potato resistance to immunochallenge, and this gene could be used for the genetic improvement of resistance against potato late blight.
ISSN:1380-3743
1572-9788
DOI:10.1007/s11032-019-1093-1