Partial mechanical impedance can increase the turgor of seedling pea roots.
Roots of 3-d-old pea seedlings (Pisum sativum L.) were mechanically impeded using a sand core apparatus, which allowed mechanical impedance to be varied independently of aeration and water status. Turgor of root cortical cells was then measured using a pressure probe. In seedlings grown in sand cores for 1 d, impedance had little effect on turgor, but in seedlings grown in the sand cores for 2 d, impedance increased turgor by 0.18 MPa in the apical 6 mm.
Clark
L J
LJ
Biochemistry and Physiology Department, IACR-Rothamsted, Harpenden, Hertfordshire AL5 2JQ, UK. lawrence.clark@bbsrc.ac.uk
Whalley
W R
WR
Barraclough
P B
PB
D001696:Biomechanical Phenomena; D018532:Pisum sativum / Q000502:physiology*; D018517:Plant Roots / Q000502:physiology; D011312:Pressure; D012822:Silicon Dioxide
D012822:Silicon Dioxide