Roles of Gravitropism and Circumnutation in the Waving/Coiling Phenomenon

摘要: In this study we investigated the kinetics of gravitropic response Arabidopsis mutant rgr1 (reduced root gravitropism). Although rate curvature in rgr1, which is allelic to axr4, was smaller than wild type (ecotype Wassilewskija), initiated same region root, distal elongation zone. The time lag for unaffected mutant; however, contained a feature not found type: when roots growing along surface an agar plate were gravistimulated, there often upward that central Because dependent on tactile environment it most likely resulted from superposition waving/coiling phenomenon onto response. We frequency waving pattern and circumnutation, cyclic endogenous growth, type, so governed by circumnutation patterns. amplitudes these oscillations may then be selectively amplified stimulation provide directional preference slanting.