Agricultural Research Council Plant Growth Substance and Systemic Fungicide Unit, Wye College (University of London), TN25 5AH, Ashford, Kent, UK.
Planta. 1975 Jan;123(3):217-22. doi: 10.1007/BF00390700.
Investigations into the relationship between the light-induced inhibition of root elongation and the response of Zea mays primary roots to gravity have revealed a close similarity between growth-inhibiting factor(s) produced in response to both stimuli. Evidence is presented that the inhibiting factor(s) produced in the root cap on exposure to white light can be used by the root to produce curvature in response to gravitational stimulation in darkness, i.e. under conditions in which dark exposed roots do not normally respond to gravity.The implications of these findings on the way in which roots respond to geotropic stimulation are discussed.
对光诱导的根伸长抑制与玉米初生根对重力响应之间关系的研究表明，对这两种刺激产生的生长抑制因子之间存在密切的相似性。有证据表明，在暴露于白光的根冠中产生的抑制因子可以被根用来在黑暗中对重力刺激产生弯曲，即在黑暗中暴露的根通常不对重力作出响应的条件下也是如此。这些发现对根如何响应向地性刺激的方式提出了讨论。
