Hyphal fusion during initial stages of trap formation in Arthrobotrys oligospora |
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Authors: | Nordbring-Hertz Birgit Friman Eva Veenhuis Marten |
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Affiliation: | (1) Department of Microbial Ecology, University of Lund, Helgonavägen 5, S-223 62 Lund, Sweden;(2) Laboratory of Electron Microscopy, Biological Centre, University of Groningen, Kerklaan 30, 9751 NN Haren, The Netherlands |
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Abstract: | Hyphal fusion during initial stages of trap formation by Arthrobotrys oligospora was studied by video-enhanced contrast and electron microscopy. Trap initials grew perpendicularly to the parent hypha, then curved around and anastomosed with a peg that developed on the hypha. Trap initials usually developed 40–140 m apart while the anastomosis occurred 20–25 m from the initial. Vigorous cytoplasmic movements in trap initials and developed traps corresponded to intense staining with fluorescein diacetate (FDA) of these cells. In addition, bundles of microfilaments were seen in developing loops of traps. On fusion organelle migration took place from the tip cell of the trap into the peg. Later on a septum was formed at the site of fusion. |
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Keywords: | anastomosis Arthrobotrys oligospora Nematophagous fungus trap formation |
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