Plant roots sense soil compaction through restricted ethylene diffusion

@article{Pandey2021PlantRS,
  title={Plant roots sense soil compaction through restricted ethylene diffusion},
  author={Bipin K. Pandey and Guoqiang Huang and Rahul Bhosale and Sjon Hartman and Craig J. Sturrock and Lottie Jose and Olivier C. Martin and Michal Kar{\'a}dy and Laurentius A.C.J. Voesenek and Karin Ljung and Jonathan Paul Lynch and Kathleen M. Brown and William Richard Whalley and Sacha J. Mooney and Dabing Zhang and Malcolm J. Bennett},
  journal={Science},
  year={2021},
  volume={371},
  pages={276 - 280}
}
Ethylene aplenty signals soil compaction It's tough to drive a spade through compacted soil, and plant roots seem to have the same problem when growing in compacted ground. Pandey et al. found that the problem is not, however, one of physical resistance but rather inhibition of growth through a signaling pathway. The volatile plant hormone ethylene will diffuse through aerated soil, but compacted soil reduces such diffusion, increasing the concentration of ethylene near root tissues. The… 
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