Soil penetration by maize roots is negatively related to ethylene‐induced thickening

• Published in: Plant, cell and environment Vol. 45; no. 3; pp. 789 - 804
• Main Authors: Vanhees, Dorien J., Schneider, Hannah M., Sidhu, Jagdeep Singh, Loades, Kenneth W., Bengough, A. Glyn, Bennett, Malcolm J., Pandey, Bipin K., Brown, Kathleen M., Mooney, Sacha J., Lynch, Jonathan P.
• Format: Journal Article
• Language: English
• Published: United States Wiley Subscription Services, Inc 01.03.2022; Wiley-Blackwell; John Wiley and Sons Inc
• Subjects: Cell culture; cell file number; Cell size; Compacted soils; Corn; Elongation; environment; Ethylene; Ethylenes; Genotypes; Hydroponics; Impedance; Mechanical impedance; Original; Penetration; Plant growth; Plant Roots; radial expansion; root anatomy; root axis; root growth; Roots; Soil; Soil compaction; Soil layers; Thickening; Zea mays - physiology; mechanical impedance; cell file number; radial expansion; cell size; ethylene; root axis; root anatomy

Radial expansion is a classic response of roots to a mechanical impedance that has generally been assumed to aid penetration. We analysed the response of maize nodal roots to impedance to test the hypothesis that radial expansion is not related to the ability of roots to cross a compacted soil layer...