title: Reduced allelopathic inhibition of lettuce (Lactuca sativa) growth caused by velvet bean (Mucuna pruriens) under 3D-clinorotation.
abstract: Allelopathy between Mucuna pruriens (velvet bean) and Lactuca sativa (lettuce) was studied under 3D-clinorotation. Growth of both roots and shoots of lettuce seedlings was suppressed by the presence of velvet bean. The degree of suppression was less on the clinostat compared to the normal static earth gravity. L-DOPA (L-3, 4-dihydroxyphenylalanine) is known to be a major substance in allelopathy of velvet bean. Amount of L-DOPA diffused out from a sintered filter paper into agar medium was compared between clinorotation and control group, and found no significant difference. It was concluded that some factors related to release, transport, and sensing phenomena of allelopathic substances may be responsible to the new findings in this study.
authors.affiliation: Institute of Applied Biochemistry, University of Tsukuba, Tsukuba, Ibaraki, Japan. kaboka@sakura.cc.tsukuba.ac.jp
authors.forename: Kaori
authors.initials: K
authors.lastname: Tomita-Yokotani
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Fujii
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Hashimoto
authors.forename: Masamichi
authors.initials: M
authors.lastname: Yamashita
mesh_terms: D001692:Biological Transport; D018545:Lactuca / Q000187:drug effects* / Q000254:growth & development* / Q000502:physiology; D007980:Levodopa / Q000302:isolation & purification / Q000378:metabolism* / Q000502:physiology; D031299:Mucuna / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism* / Q000502:physiology; D010675:Pheromones / Q000302:isolation & purification / Q000378:metabolism / Q000494:pharmacology* / Q000502:physiology; D018517:Plant Roots / Q000187:drug effects / Q000254:growth & development / Q000502:physiology; D018520:Plant Shoots / Q000187:drug effects / Q000254:growth & development / Q000502:physiology; D012399:Rotation; D018474:Weightlessness Simulation
chemical_list: D010675:Pheromones; D007980:Levodopa