Publication Date
1985
Location
Kyoto Japan
Description
Sericea lespedeza (Lespedeza cuneata) is a warm-season perennial legume tolerant of aluminum (Al) in acid soils. This study was designed to ascertain the mechanism of Al-tolerance in sericea lespedeza. The mechanism of Al-tolerance in sericea was investigated through tissue analysis, rhizosphere pH measurement, and examination of Al distribution using energy dispersive spectrophotometry (EDS) in conjunction with scanning electron microscopy (SEM). Sericea was found to exclude Al from its herbage three times better alfalfa (Medicago sativa), but seedlings reduced pH in their rhizosphere. EDS scans of root tissue embedded in scid soil indicated that Al was accumulated in or on sericea cortex and epidermal cell walls independent of phosphorus (P). Sericea appears to tolerate Al by entrapping the element in an inactive form in its root tissue, reducing Al/P interactions, and allowing normal cell function in the presence of Al.
Citation
Joost, R E. and Hoveland, C S., "Mechanisum of Aluminum Tolerance in Sericea lespedeza" (1985). IGC Proceedings (1985-2023). 24.
(URL: https://uknowledge.uky.edu/igc/1985/ses3/24)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Mechanisum of Aluminum Tolerance in Sericea lespedeza
Kyoto Japan
Sericea lespedeza (Lespedeza cuneata) is a warm-season perennial legume tolerant of aluminum (Al) in acid soils. This study was designed to ascertain the mechanism of Al-tolerance in sericea lespedeza. The mechanism of Al-tolerance in sericea was investigated through tissue analysis, rhizosphere pH measurement, and examination of Al distribution using energy dispersive spectrophotometry (EDS) in conjunction with scanning electron microscopy (SEM). Sericea was found to exclude Al from its herbage three times better alfalfa (Medicago sativa), but seedlings reduced pH in their rhizosphere. EDS scans of root tissue embedded in scid soil indicated that Al was accumulated in or on sericea cortex and epidermal cell walls independent of phosphorus (P). Sericea appears to tolerate Al by entrapping the element in an inactive form in its root tissue, reducing Al/P interactions, and allowing normal cell function in the presence of Al.
