title: Partial mechanical impedance can increase the turgor of seedling pea roots.
abstract: 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.
authors.affiliation: Biochemistry and Physiology Department, IACR-Rothamsted, Harpenden, Hertfordshire AL5 2JQ, UK. lawrence.clark@bbsrc.ac.uk
authors.forename: L J
authors.initials: LJ
authors.lastname: Clark
authors.forename: W R
authors.initials: WR
authors.lastname: Whalley
authors.forename: P B
authors.initials: PB
authors.lastname: Barraclough
mesh_terms: D001696:Biomechanical Phenomena; D018532:Pisum sativum / Q000502:physiology*; D018517:Plant Roots / Q000502:physiology; D011312:Pressure; D012822:Silicon Dioxide
chemical_list: D012822:Silicon Dioxide