TLDR The protein RSL4 is crucial for making root hairs longer by controlling genes related to cell growth.
The study concluded that the transcription factor ROOT HAIR DEFECTIVE SIX-LIKE4 (RSL4) was crucial for promoting root hair elongation in Arabidopsis thaliana by regulating the expression of 34 genes necessary for cell growth. Key genes identified included SAC1, EXO70A1, PRX7, and CPK11, which were essential for root hair development. The research demonstrated that RSL4 controlled cell growth through pathways involving cell signaling, cell wall modification, and secretion, providing significant insights into the genetic and molecular mechanisms of root hair formation. This understanding could potentially improve root hair traits in crops, enhancing nutrient uptake and stress resilience.
141 citations
,
June 2002 in “Philosophical Transactions of the Royal Society B Biological Sciences” The study revealed how specific genes and proteins control root hair growth in plants.
183 citations
,
July 2000 in “American Journal of Botany” Root hairs help Arabidopsis plants absorb more phosphorus when it's scarce.
200 citations
,
November 1997 in “Planta” Calcium affects where root hairs grow, but other unknown factors determine their growth direction.
15 citations
,
September 2018 in “Frontiers in Plant Science” BcFLA1 protein is crucial for root hair growth in response to low phosphate in Brassica carinata.
March 2017 in “bioRxiv (Cold Spring Harbor Laboratory)” Plant root hair growth is controlled by the hormone auxin, which affects the production of certain oxygen-related molecules through a specific process.
April 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” A gene network led by RSL4 is crucial for early root hair growth in response to cold in Arabidopsis thaliana.
March 2021 in “Research Square (Research Square)” The SbbHLH85 protein helps sweet sorghum grow more root hairs but makes the plant more sensitive to salt.
2 citations
,
January 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” A protein called FERONIA helps control root hair growth in response to cold and low nitrogen by activating nutrient-sensing pathways in a plant called Arabidopsis.
