J Integr Plant Biol. ›› 2023, Vol. 65 ›› Issue (2): 594-610.DOI: 10.1111/jipb.13419

• Invited Expert Reviews • Previous Articles    

Quantitative disease resistance: Multifaceted players in plant defense

Mingyue Gou1,2, Peter Balint-Kurti3,4, Mingliang Xu5* and Qin Yang6*   

  1. 1. State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China;
    2. The Shennong Laboratory, Zhengzhou 450002, China;
    3. Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC 27695, USA;
    4. Plant Science Research Unit, USDA-ARS, Raleigh, NC 27695, USA;
    5. State Key Laboratory of Plant Physiology and Biochemistry, National Maize Improvement Center, Center for Crop Functional Genomics and Molecular Breeding, College of Agronomy, China Agricultural University, Beijing 100193, China;
    6. State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Maize Biology and Genetic Breeding in Arid Area of Northwest Region of the Ministry of Agriculture, College of Agronomy, Northwest A&F University, Yangling 712100, China
    *Correspondences: Qin Yang (qyang@nwafu.edu.cn, Dr. Yang is fully responsible for the distributions of all materials associated with this article); Mingliang Xu (mxu@cau.edu.cn)
  • Received:2022-08-21 Accepted:2022-11-29 Online:2022-11-30 Published:2023-02-01

Abstract: In contrast to large-effect qualitative disease resistance, quantitative disease resistance (QDR) exhibits partial and generally durable resistance and has been extensively utilized in crop breeding. The molecular mechanisms underlying QDR remain largely unknown but considerable progress has been made in this area in recent years. In this review, we summarize the genes that have been associated with plant QDR and their biological functions. Many QDR genes belong to the canonical resistance gene categories with predicted functions in pathogen perception, signal transduction, phytohormone homeostasis, metabolite transport and biosynthesis, and epigenetic regulation. However, other “atypical” QDR genes are predicted to be involved in processes that are not commonly associated with disease resistance, such as vesicle trafficking, molecular chaperones, and others. This diversity of function for QDR genes contrasts with qualitative resistance, which is often based on the actions of nucleotide-binding leucine-rich repeat (NLR) resistance proteins. An understanding of the diversity of QDR mechanisms and of which mechanisms are effective against which classes of pathogens will enable the more effective deployment of QDR to produce more durably resistant, resilient crops.

Key words: biological function, durable resistance, plant defense, quantitative disease resistance (QDR)

Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2022 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q