Gene fusions between thaumatin-like proteins and antimicrobial peptides or receptor kinases, occurring millions of years ago, contribute to plant resistance against Sclerotinia disease.
40 million years agoAncient gene fusion created novel antimicrobial fusion proteins that protect crops today
What the researchers found
Gene fusions between TLPs and AMPs/RLKs at different evolutionary timepoints created novel defense proteins that enhance rapeseed resistance against Sclerotinia disease.
Why it matters
Understanding how plants naturally evolved enhanced immune defenses through gene fusion could inform breeding and engineering strategies for crop disease resistance.
How the study worked
Evolutionary analysis of gene fusion events in rapeseed, dating fusion timepoints and characterizing the disease resistance function of fusion proteins.
What this study cannot tell us
Focused on rapeseed — generalizability to other crops needs investigation; mechanistic details of how fusion proteins enhance resistance need further study.
How to read the evidence
Plant molecular biology and evolutionary study — strong for understanding natural defense evolution; practical breeding applications need development.
When this study was published
Published 2026 in Plant Physiology and Biochemistry.
The bigger picture
Evolution has already performed combinatorial peptide engineering through gene fusion. Mining these natural fusion events could reveal optimized antimicrobial strategies for agriculture.
Questions still open
- Can artificial gene fusions of TLPs with AMPs be used to engineer disease-resistant crops?
- Do similar fusion events occur in other crop species?
Common questions
What is gene fusion in plants?
How could this help agriculture?
Read the original research
The genetic fusion of thaumatin-like proteins with antimicrobial peptides or receptor-like kinases at different evolutionary time points contributes to plant resistance against Sclerotinia disease.
Plant physiology and biochemistry : PPB, 231, 111065
Citation
Bai, Zetao; He, Yizhou; Huang, Junyan; Zhong, Xue; Shi, Meijuan; Zuo, Rong; Tang, Minqiang; Xie, Meili; Gao, Feng; Tong, Chaobo; Liu, Lijiang; Liu, Shengyi. (2026). The genetic fusion of thaumatin-like proteins with antimicrobial peptides or receptor-like kinases at different evolutionary time points contributes to plant resistance against Sclerotinia disease.. Plant physiology and biochemistry : PPB, 231, 111065. https://doi.org/10.1016/j.plaphy.2026.111065