MSU-DOE Plant Research Laboratory, Michigan State University, 48824, East Lansing, MI, USA.
Planta. 1983 Nov;159(3):286-8. doi: 10.1007/BF00397538.
We tested the hypothesis that ethylene was involved in autochemotropism (avoidance response) and rheotropism (wind response) of the sporangiophore (spph) of Phycomyces blakesleeanus Burgeff. When a solid barrier was placed 1 mm away from the growing zone of the spph, the spph grew away from the barrier. This response had a lag time of 2-4 min and persisted at least for 20 min. Coating the surface of the barrier with powdered Purafil, a strong ethylene oxidant, did not affect the avoidance response. When the spph was placed in a laminar flow of air, it grew into the wind within 2-4 min. When ethylene (200 μl l(-1)) was added to the air flow, the same positive rheotropic growth response took place. Neither autochemotropism nor rheotropism of the Phycomyces spph seem to be mediated by ethylene produced by the spph.
我们检验了乙烯是否参与了藻菌属（Phycomyces）泡囊梗（spph）的自趋化性（回避反应）和向触性（风响应）这一假说。当一个固体障碍物放置在距 spph 生长区 1 毫米处时，spph 会远离障碍物生长。这种反应有 2-4 分钟的滞后时间，并且至少持续 20 分钟。用粉末状 Purafil（一种强乙烯氧化剂）覆盖障碍物表面，不会影响回避反应。当 spph 置于层流空气中时，它会在 2-4 分钟内顺着风向生长。当将乙烯（200μl l(-1))添加到气流中时，也会发生相同的正向触性生长反应。藻菌属 spph 的自趋化性和向触性似乎都不是由 spph 产生的乙烯介导的。
