Piromonas dumbonica (J.L. Li) Doweld 2014
![FIG. 1. Cross section through the base of a prereleased zoospore of P. mae showing the flagellum (F) lying in a deep indentation of the cell, ribosomal aggregates (ra) and helices (rh), a megahydrogenosome (mh), and single hydrogenosomes (h). x 16 560. FIG. 2. Section through the nucleus of a prereleased zoospore of P. dumbonica showing the tubular hydrogenosomes (h) clustered near the kinetosome and the thickened nuclear envelope (arrows). x 1880. FIG. 3. A megahydrogenosome in a prereleased zoospore of P. mae. Note the various invaginations filled with cytoplasm and including ribosomes. x 50 850. FIG. 4. A microbody with several electron transparent lines at its periphery in P. dumbonica. x44 500. FIG. 5. Rough endoplasmic reticulum and free ribosomes in a prereleased zoospore of P. mae. x 44 500. FIG. 6. Two membrane stacks associated with a hydrogenosome in a zoospore of P. mae. x 67 800. FIG. 7. A membrane stack which is free in the cytoplasm in a zoospore of P. mae. x 67 800. FIG. 8. Early autophagic vacuole-like structures in a zoospore of P. mae. x 61 440. FIG. 9. Ribosomal aggregates embedded in an uniform substratum of unknown nature in a zoospore of P. dumbonica. x 61 440. © All rights reserved. [Image: ANA]](https://data.landcareresearch.co.nz/Image/ANA/SysPortalThumb)
![FIG. 12. Series of longitudinal sections through the kinetosome region of a zoospore of P. dumbonica showing similar features to those seen in Fig. 10. Note position of basal plate (arrow in f) and extension of circumflagellar ring in c and d. x 67 800. FIG. 13. Series of cross sections through the kinetosome region of a zoospore of P. dumbonica showing the crescent shaped extension of the circumflagellar ring (af), the globular structures (d-h, arrowheads), and the props (h, arrows). The doublets are numbered in a. x 67 800. © All rights reserved. [Image: ANC]](https://data.landcareresearch.co.nz/Image/ANC/SysPortalThumb)
![FIG. 1. Cross section through the base of a prereleased zoospore of P. mae showing the flagellum (F) lying in a deep indentation of the cell, ribosomal aggregates (ra) and helices (rh), a megahydrogenosome (mh), and single hydrogenosomes (h). x 16 560. FIG. 2. Section through the nucleus of a prereleased zoospore of P. dumbonica showing the tubular hydrogenosomes (h) clustered near the kinetosome and the thickened nuclear envelope (arrows). x 1880. FIG. 3. A megahydrogenosome in a prereleased zoospore of P. mae. Note the various invaginations filled with cytoplasm and including ribosomes. x 50 850. FIG. 4. A microbody with several electron transparent lines at its periphery in P. dumbonica. x44 500. FIG. 5. Rough endoplasmic reticulum and free ribosomes in a prereleased zoospore of P. mae. x 44 500. FIG. 6. Two membrane stacks associated with a hydrogenosome in a zoospore of P. mae. x 67 800. FIG. 7. A membrane stack which is free in the cytoplasm in a zoospore of P. mae. x 67 800. FIG. 8. Early autophagic vacuole-like structures in a zoospore of P. mae. x 61 440. FIG. 9. Ribosomal aggregates embedded in an uniform substratum of unknown nature in a zoospore of P. dumbonica. x 61 440. © All rights reserved. [Image: ANA]](https://data.landcareresearch.co.nz/Image/ANA/SysPortalPreview)
![FIG. 12. Series of longitudinal sections through the kinetosome region of a zoospore of P. dumbonica showing similar features to those seen in Fig. 10. Note position of basal plate (arrow in f) and extension of circumflagellar ring in c and d. x 67 800. FIG. 13. Series of cross sections through the kinetosome region of a zoospore of P. dumbonica showing the crescent shaped extension of the circumflagellar ring (af), the globular structures (d-h, arrowheads), and the props (h, arrows). The doublets are numbered in a. x 67 800. © All rights reserved. [Image: ANC]](https://data.landcareresearch.co.nz/Image/ANC/SysPortalPreview)
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Details
Piromonas dumbonica (J.L. Li) Doweld, Index Fungorum
110 1 (2014)
Piromonas dumbonica (J.L. Li) Doweld 2014
Nomenclature
(J.L. Li) Doweld
J.L. Li
Doweld
2014
1
ICN
species
Piromonas dumbonica
Classification
Synonyms
Descriptions
Sporangium spherical to elongate, 30-56 x 100-112 µm, nonpapillate, with or without elongate subsporangial swelling; rhizoids extensively branched, extending up to 600 µm long. Zoospores spherical to ovoid, 5.5-12.0 µm, usually uniflagellate, rarely biflagellate. The organelles show strongly polarized distribution in the zoospores, with tubular hydrogenosomes and nucleus in the posterior region, and ribosomal aggregates in the anterior region. Megahydrogenosomes absent from zoospores. Nuclear envelope is decorated with flat ribosomal aggregates. Circumflagellar rings show little tilt and have a C-shaped elongation. Ribosomal aggregates are either free in cytoplasm or are embeded in a homogeneous substratum in a group.
Piromyces communi (Gold) aemulans, differt zoosporis fasces ribosomaitum et annulum circum flagellarem amplificatam et hydrogenosomaita tubularia continentibus. Intestinus elephantis habitat.
ETYMOLOGY: dumbonica named after the most famous cartoon version of the host ("Dumbo") from which isolated but does not necessarily imply fungus is exclusive to that host.
TYPE: Figs. 2, 4, 9, 12, 13, 19, 23, 24, 31.
Taxonomic concepts
Piromyces dumbonicus J.L. Li (1990)
Piromyces dumbonicus J.L. Li (1990)
Metadata
0f442f90-70a6-468b-8007-8425928686dd
scientific name
Names_Fungi
2 February 2014
14 October 2015
