Summary
Constricting ring traps can be sprung by exposure to dilute alcohol solutions and even by the vapours of higher alcohols. The greater the lipid solubility of the alcohol, the lower the concentration required to spring 100% of treated traps. This implies first that their primary action is at the plasma membrane, and second that some traps in a population are more reactive than others. Over 80% of traps could be activated between pH 5.5 and 8.2 suggesting an adaptation to permit prey capture even in unfavourable micro-environments.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Barron GL (1979) Observations on predatory fungi. Can J Bot 57: 187–193
— (1981) Predators and parasites of microscopic animals. In: Cole GT, Kendrick B (eds) Biology of conidal fungi, vol 2. Academic Press, New York, pp 167–200
Collander R, Barlund H (1933) Permeabilitatsstudien inChara ceratophylla. Acta Bot Fennica 11: 1–114
Comandon J, de Fonbrune P (1938) Recherches expérimentales sur les champignons predateurs du sol. CR Soc Biol (Paris) 129: 619–625
Couch JN (1937) The formation and operation of traps in the nematode-catching fungusDactylella bembicoides Drechsler. J Elisha Mitchell Sci Soc 53: 301–309
Dowsett JA, Reid J, Van Caeseele L (1977) Transmission and scanning electron microscope observations on the trapping of nematodes byDactylaria brochopaga. Can J Bot 55: 2945–2955
Giese AC (1973) Cell physiology. WB Saunders, Philadelphia
Heintz CE, Pramer D (1972) Ultrastructure of nematode-trapping fungi. J Bacteriol 110: 1163–1170
Insell JP (1975) The constricting ring trap of the predacious fungusDactylella brochopaga. MSc thesis, University of Waterloo
—, Zachariah K (1978) The mechanism of the ring trap of the predacious hyphomyceteDactylella brochopaga. Protoplasma 95: 175–191
Lawton JR (1967) The formation and closure of the constricting rings in two nematode-catching hyphomycetes. Trans Br Mycol Soc 50: 195–205
Muller HG (1958) The constricting ring mechanism of two predacious hyphomycetes. Trans Br Mycol Soc 41: 341–364
Rudek WT (1975) The constriction of the trapping rings inDactylaria brochopaga. Mycopathologia 55: 193–197
Stein WD (1967) The movement of molecules across cell membranes. Academic Press, New York
Zachariah K (1981) Chemotropism by isolated ring traps ofDactylella doedycoides. Protoplasma 106: 173–182
— (1982) Growth responses of isolated ring traps ofDactylella doedycoides. Can J Bot 60: 580–585
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Zachariah, K. Chemical induction of trap closure inDactylella brochopaga . Protoplasma 148, 87–93 (1989). https://doi.org/10.1007/BF02079326
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02079326