毛霉中的回避反应。
The avoidance response in Phycomyces.
作者信息
Johnson D L, Gamow R I
出版信息
J Gen Physiol. 1971 Jan;57(1):41-9. doi: 10.1085/jgp.57.1.41.
Phycomyces sporangiophores grow away from stationary objects, a phenomenon known as the avoidance response. Evidence is presented suggesting that a growth-stimulating gas is emitted from the sporangiophore and is then swept to the leeward side by air currents resulting in higher gas concentration on that side. The presence of a stationary barrier decreases the passive movement of the gas away from the leeward side. It is proposed that an increase of this gas on one side causes that side to grow faster. Indirect evidence suggests that the gas is water vapor.
毛霉目真菌的孢子囊梗会朝着远离静止物体的方向生长，这一现象被称为回避反应。有证据表明，孢子囊梗会释放出一种促进生长的气体，然后该气体被气流吹到背风侧，导致背风侧的气体浓度更高。静止障碍物的存在会减少气体从背风侧的被动扩散。有人提出，一侧这种气体浓度的增加会导致该侧生长更快。间接证据表明，这种气体是水蒸气。
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