The role of hormones in parasitic plant infection.
van Wüllen AK, Leso M, Hailu BF, Krause K, Melnyk CW
Plant Signaling
Witchweed and broomrape — parasitic plants controlled partly by their own hormone chemistry — destroy staple crops across Africa and the Mediterranean, and understanding their hormonal playbook is the most promising route to stopping them before they strangle a field.
Some plants are vampires: instead of making all their own food, they latch onto neighboring plants and steal nutrients. They do this using special grabbing organs that grow when triggered by chemical signals called hormones — the same kinds of signals that tell any plant when to flower or grow roots. Scientists are now piecing together exactly which hormones flip which switches, which could eventually let farmers disrupt the parasite's lifecycle before it wrecks a crop.
Key Findings
Parasitic plants use haustoria — specialized invasive organs — to penetrate host tissue, and hormone signaling molecules are key triggers for haustoria formation and development.
Different hormones influence distinct stages of parasitism: haustoria induction, vascular tissue development inside the haustorium, and ongoing physiological manipulation of the host plant.
Significant knowledge gaps remain in how hormones function across different parasitic plant species and lifestyles, making this an active and open research frontier.
chevron_right Technical Summary
Parasitic plants use hormone signals to hijack neighboring plants, forming specialized attachment organs called haustoria that drain water and nutrients from hosts. This review maps out what scientists now know about which hormones drive each stage of the attack.
Abstract Preview
Plant parasitism is a widespread lifestyle found throughout the plant kingdom that plays important roles in ecology and agriculture. Parasitic plants rely on the formation of specialized parasitic ...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Was this useful?
Chloroplast Genome Editing Eliminates Gluten Immunogenicity in Triticum aestivum
It could mean that people with celiac disease — roughly 1 in 100 worldwide — may one day safely eat bread made from real wheat, without sacrificing the taste...