Susceptibility Is New Resistance: Wheat Susceptibility Genes and Exploitation in Resistance Breeding

Mengmeng Li, Zige Yang and Cheng Chang ()
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Mengmeng Li: College of Life Sciences, Qingdao University, Qingdao 266071, China
Zige Yang: College of Life Sciences, Qingdao University, Qingdao 266071, China
Cheng Chang: College of Life Sciences, Qingdao University, Qingdao 266071, China

Agriculture, 2022, vol. 12, issue 9, 1-13

Abstract: Adapted pathogens and pests seriously threaten global wheat production. During pathogen and pest infections, wheat susceptibility ( S ) genes are exploited to support the compatibility of wheat with pathogens and pests. A plethora of wheat S genes were recently identified and revealed to regulate multiple processes, including pathogen (pre)penetration, plant immunity, pathogen sustenance, and pest feeding. The inactivation of some S genes via newly developed genome editing and TILLING techniques could reduce compatibility and confer broad-spectrum and durable resistance, which provide a new avenue for wheat resistance improvement. In this review, we summarized recent advances in the characterization of wheat S genes and highlighted their multifaceted roles in facilitating compatible interactions of wheat with adapted pathogens and pests. Current strategies, limitations, and future directions in exploiting S genes in wheat resistance breeding are discussed.

Keywords: wheat; susceptibility genes; resistance; pathogens; pests; genome editing; TILLING; (pre)penetration; plant immunity; pathogen sustenance (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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