Old plant cell mystery may explain drought resilience
Arico DS, Hamant O
Plant Signaling
Every wilting and recovering houseplant or garden vegetable is relying on microscopic membrane-to-wall anchors that scientists are only now learning how to decode, work that could eventually inform how we breed plants tougher against drought.
Inside every plant cell, the thin membrane wrapping the cell stays attached to the tough outer wall by tiny threads, first spotted by scientists almost 200 years ago. Researchers are now figuring out what actually holds these threads together, and it turns out a handful of proteins and even boron atoms play a role. Because these attachments seem to help cells cope with water stress, this could open new paths toward understanding drought resistance in plants.
Key Findings
Hechtian strands, first described nearly 200 years ago, are membrane-to-cell-wall attachments now being mechanistically characterized
Cellulose synthase, remorin, the Feronia receptor, lectin domains, and boron crosslinks have all been implicated in forming or stabilizing these strands
The findings suggest these structures play a role in how plants detect and respond to fluctuations in water stress
chevron_right Technical Summary
Scientists are revisiting a 200-year-old plant mystery: tiny threads called Hechtian strands that anchor a plant cell's inner membrane to its outer wall. New research shows these threads rely on specific proteins and boron chemistry, and understanding them could help explain how plants sense and survive drought or water stress.
Abstract Preview
Original paper
Plant cell biology: Hechtian strands unraveled.
Almost two centuries after their initial description in plants, persistent attachments between the plasma membrane and the cell wall are being revisited. Several recent studies highlight the roles ...
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