Fusarium

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Fusarium oxysporum (showing hyphae from which monophialides extend, producing microconidia at the tips which can accumulate there unless dispersed.)

Fusarium oxysporum (showing hyphae from which monophialides extend, producing microconidia at the tips which can accumulate there unless dispersed.)

Fusarium oxysporum - Microconidia and a few Macroconidia (X100 LPCB: Nikon)

Fusarium oxysporum - Microconidia and a few Macroconidia (X100 LPCB: Nikon)

Fun With Microbiology (What's Buggin' You?): Fusarium oxysporum Fusarium oxysporum (X400 LPCB: Nikon) Microconidia can be seen accumulating around the tips of the phialides

Fun With Microbiology (What's Buggin' You?): Fusarium oxysporum Fusarium oxysporum (X400 LPCB: Nikon) Microconidia can be seen accumulating around the tips of the phialides

Fun With Microbiology On Sabouraud-Dextrose (SAB) media (30oC) this isolate of F.oxysporum grew rather rapidly to produce of-white floccose (cottony) colonies with the aerial mycelia becoming tinged in purple.  The reverse was a rather non-descript pale to yellow.  Other sources have described the reverse as having a purple colour, particularly on Potato-Dextrose agar, a characteristic not seen on the isolate presented here and grown on SAB.

Fun With Microbiology On Sabouraud-Dextrose (SAB) media (30oC) this isolate of F.oxysporum grew rather rapidly to produce of-white floccose (cottony) colonies with the aerial mycelia becoming tinged in purple. The reverse was a rather non-descript pale to yellow. Other sources have described the reverse as having a purple colour, particularly on Potato-Dextrose agar, a characteristic not seen on the isolate presented here and grown on SAB.

Fusarium oxysporum - microconidia in various stages of development (arrows) at the tips of the monophialides from which they are produced.  (X1000+10* LPCB: DMD-108)

Fusarium oxysporum - microconidia in various stages of development (arrows) at the tips of the monophialides from which they are produced. (X1000+10* LPCB: DMD-108)

Fusarium species - Just for comparison of the shape.  The photo on the left is of micro (and a few macro) conidia produced by Fusarium oxysporum while the one on the right is of microconidia produced by Fusarium dimerum.  The F.dimerum is showing a greater curved "banana" or "canoe" shaped microconidia thatn the F.oxysporum.

Fusarium species - Just for comparison of the shape. The photo on the left is of micro (and a few macro) conidia produced by Fusarium oxysporum while the one on the right is of microconidia produced by Fusarium dimerum. The F.dimerum is showing a greater curved "banana" or "canoe" shaped microconidia thatn the F.oxysporum.

Fusarium oxysporum - micro & macro conidia accumulated along side of hyphae. (X1000+10* LPCB: DMD-108)

Fusarium oxysporum - micro & macro conidia accumulated along side of hyphae. (X1000+10* LPCB: DMD-108)

Fusarium oxysporum - microconidia accumulating at the tips of phialdes (X1000 LPCB: DMD-108)

Fusarium oxysporum - microconidia accumulating at the tips of phialdes (X1000 LPCB: DMD-108)

Fusarium Wilt (Life Cycle)

Fusarium Wilt (Life Cycle)

Fusarium oxysporum - yet another view of two parallel hyphae from which the phialides extend producing micro (&/or macro) conidia.  Conidia vary in shape from the rather straight fusiform (lens shaped) to the curved banana or canoe shape.  (X100 LPCB: DMD-108)

Fusarium oxysporum - yet another view of two parallel hyphae from which the phialides extend producing micro (&/or macro) conidia. Conidia vary in shape from the rather straight fusiform (lens shaped) to the curved banana or canoe shape. (X100 LPCB: DMD-108)


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