When Roots Lose Contact

@article{Carminati2009WhenRL,
  title={When Roots Lose Contact},
  author={Andrea Carminati and Doris Vetterlein and Ulrich Weller and Hans‐J{\"o}rg Vogel and Sascha E. Oswald},
  journal={Vadose Zone Journal},
  year={2009},
  volume={8},
  pages={805 - 809}
}
It has been speculated that during periods of water deficit, roots may shrink and lose contact with the soil, with a consequent reduction in root water uptake. Due to the opaque nature of soil, however, this process has never been observed in situ for living plants. Through x‐ray tomography and image analysis, we have demonstrated the formation and dynamics of air gaps around roots. The high spatial resolution required to image the soil–root gaps was achieved by combining tomography of the… 
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