Oxygen and Morphological Changes in Allomyces macrogynus

Youatt, Jean

doi:10.1071/bi9860233

Cited by 9 publications

(2 citation statements)

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“…1, stages 3 and 6), when this state was finally achieved. We have no knowledge at present as to how the hyphae tend to the parallel sides but we do.know that the diameter is highly dependent on the available oxygen (Youatt 1986b).…”

Section: Discussionmentioning

confidence: 99%

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Hyphal Emergence and Outgrowth of Allomyces macrogynus in Aerated Cultures

Cleary¹,

Youatt²,

O’Brien³

1986

Aust. Jnl. Of Bio. Sci.

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Hyphal emergence was delayed in aerated cultures of A. macrogynus. Continuous observation of individual organisms revealed alternation of growth at the tip and at the base, including an incorporation of part of the primary rhizoid into the hyphal region. Electron microscopy of sections confirmed the deposition of additional wall during the stages of development of the base. These sections also showed changes in wall structure during growth, in particular a readily removable component of early walls. Nuclei were positioned just below the emerging tips at hyphal emergence and at branching. The apical zones of exclusion contained few, if any, vesicles and multivesicular bodies. In other regions the mitochondria were observed in close proximity to the plasmalemma.

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Section: Discussionmentioning

confidence: 99%

“…The process of hyphal development was associated with changes in the colour and water repellance of the walls (Youatt 1985). In a separate study the time of hyphal emergence has been linked to the supply of oxygen (Youatt 1986b).…”

Section: Introductionmentioning

confidence: 99%