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. 1971 Jan;57(1):41-9.
doi: 10.1085/jgp.57.1.41.

The avoidance response in Phycomyces

D L Johnson, R I Gamow

The avoidance response in Phycomyces

D L Johnson et al. J Gen Physiol. 1971 Jan.

Abstract

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.

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References

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    1. Science. 1970 Jun 12;168(3937):1374-5 - PubMed