Multi-omics analysis of Raptor1A knockout reveals resistance to Tuta absoluta in tomato without growth penalties.
Song L, Zhang N, Tang J, Zhang Y, Pei S
Crispr
Tomatoes in your garden could soon be bred to fight off one of their worst insect enemies on their own — no sprays, no stunted plants, just a single gene tweak that lets the plant's natural defenses run at full strength.
Tomato plants have a built-in alarm system that ramps up when bugs attack, releasing natural chemicals that repel or harm insects. Normally, one gene acts like a volume knob turned way down on that alarm. Researchers disabled that gene using a precise editing tool, and the plants blasted their defenses at full volume against a destructive moth — while still growing and producing fruit just as well as unedited plants.
Key Findings
Knocking out SlRaptor1A with CRISPR-Cas9 conferred enhanced resistance to Tuta absoluta (tomato leaf miner) with no reduction in plant growth or yield.
Mutant plants showed elevated levels of jasmonic acid, salicylic acid, and defensive secondary metabolites including alkaloids and phenylpropanoids during insect infestation.
Multi-omics analysis (transcriptomics + metabolomics) confirmed coordinated upregulation of defense genes and metabolite accumulation, identifying SlRaptor1A as a negative regulator of the plant's immune response.
chevron_right Technical Summary
Scientists knocked out a gene in tomato plants that normally suppresses pest defenses, producing plants that resist the devastating tomato leaf miner moth without any loss in growth or fruit yield.
Abstract Preview
The Target of Rapamycin (TOR) signaling pathway plays a pivotal role in balancing plant growth and defense. However, the specific contribution of TOR complex components to insect resistance remains...
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