An integrated framework to elucidate mechanisms underlying host-branched broomrape infection.
Gouran M, De Clarin MS, Brady SM, Sinha NR
Crispr
Tomatoes in your garden or at a local farm market face a stealthy underground threat — a parasitic plant that latches onto their roots and can wipe out an entire crop before you ever see it above ground.
Branched broomrape is a parasitic plant that lives entirely underground, attaching to tomato roots and stealing water and nutrients. Until now, it was nearly impossible to study this in the lab because everything happens in the soil. Researchers built a see-through, soil-free growing system that lets them watch the attack happen in real time, and they used it to find a tomato gene that triggers a kind of natural armor — a tough, woody barrier — exactly where the parasite tries to break in.
Key Findings
A transparent, soil-less co-cultivation system now allows real-time, non-destructive imaging of broomrape infecting tomato roots for the first time.
CRISPR-edited tomato plants with mutations in the transcription factor gene SCHIZORIZA (SlSCZ) showed localized lignin buildup specifically at the parasite's entry point.
A dual-compartment lab culture system using transgenic hairy roots enables rapid functional testing of candidate resistance genes, accelerating discovery timelines.
chevron_right Technical Summary
Scientists developed a new lab system to study how a devastating parasitic weed called branched broomrape attacks tomato roots, and used it to identify a gene that helps tomatoes fight back by building reinforced cell walls at the infection site.
Abstract Preview
Branched broomrape (Phelipanche ramosa) is an obligate root parasitic weed that threatens tomato production in many regions. Progress in understanding host resistance mechanisms has been hindered b...
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