Abstract
The flagellar apparatus of the small prymnesiophytePrymnesium patellifera has been analysed and a reconstruction is presented. Externally, the cell carries two sub-equal flagella and a short non-coiling haptonema. Within the cell, there are four microtubular roots and a number of fibrous bands, the latter interconnecting the two basal bodies and the haptonema base. One of the roots (r1) consists of a sheet of up to 25 microtubules originating close to the proximal extremity of the haptonema base, but the other three roots are composed of between 1 and 4 microtubules only. Distally, a large striated fibrous auxiliary connecting root extends across the anterior part of the cell linking root r1 and a mitochondrial profile on the opposite side of the cell. The arrangement of the components of the flagellar apparatus ofP. patellifera is commensurate with the general pattern found in many prymnesiophytes other than members of the Pavlovales, but there are a number of differences in detail from the other species described hitherto.
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Abbreviations
- a:
-
amorphous material
- abl:
-
ab2, accessory connecting bands
- acr:
-
auxiliary connecting root
- c:
-
chloroplast
- db:
-
distal connecting band
- fr:
-
fibrous root
- g:
-
Golgi body cisternae
- H:
-
haptonema
- ib:
-
intermediate connecting band
- L:
-
left basal body
- m:
-
mitochondrion
- MT(s):
-
microtubule (s)
- n:
-
nucleus
- pb:
-
proximal connecting band(s)
- R:
-
right basal body
- r1:
-
r2 etc., microtubular roots
References
Beech, P.L. andR. Wetherbee. 1988. Observations on the flagellar apparatus and peripheral endoplasmic reticulum of the coccolithophorid,Pleurochrysis carterae (Prymnesiophyceae). Phycologia27: 142–158.
Chretiennot, M.-J.. 1973. The fine structure and taxonomy ofPlatychrysis pigra Geitler (Haptophyceae). J. Mar. Biol. Ass. U.K.53: 905–914.
Gayral, P. andJ. Fresnel. 1976. Nouvelles observations sur deux Coccolithophoracées marines:Cricosphaera roscoffensis (P. Dangeard) comb. nov. etHymenomonas globosa (F. Magne) comb. nov. Phycologia15: 339–335.
— and —. 1983a. Description, sexualité et cycle de développement d'une nouvellecoc colithophoracée (Prymnesiophyceae):Pleurochrysis pseudoroscoffensis sp. nov. Protistologica19: 245–261.
— and —. 1983b.Platychrysis pienaarii sp. nov. etP. simplex sp. nov. (Prymnesiophyceae): description et ultrastructure. Phycologia22: 29–45.
Green, J.C.. 1980. The fine structure ofPavlova pinguis Green and a preliminary survey of the order Pavlovales (Prymnesiophyceae). Br. Phycol. J.15: 151–191.
— andD.J. Hibberd. 1977. The ultrastructure and taxonomy ofDiacronema vlkianum (Prymnesiophyceae) with special reference to the haptonema and flagellar apparatus. J. Mar. Biol. Ass. U.K.57: 1125–1136.
—— andR.N. Pienaar. 1982. The taxonomy ofPrymnesium (Prymnesiophyceae) including a description of a new cosmopolitan species,P. patellifera sp. nov., and further observations onP. parvum N. Carter. Br. Phycol. J.17: 363–382.
— andHori, T. 1986. The ultrastructure of the flagellar root system ofImantonia rotunda (Prymnesiophyceae). Br. Phycol. J.21: 5–18.
Inouye, I. andM. Chihara. 1980. Laboratory culture and taxonomy ofHymenomonas coronata andOchrosphaera verrucosa (Class Prymnesiophyceae) from the Northwest Pacific. Bot. Mag. Tokyo93: 195–208.
— and —. 1983. Ultrastructure and taxonomy ofJomonlithus littoralis gen. et sp. nov. (Class Prymnesiophyceae), a coccolithophorid from the Northwest Pacific. Bot. Mag. Tokyo96: 365–376.
— andR.N. Pienaar. 1984. New observations on the coccolithophoridUmbilicosphaera sibogae var.foliosa (Prymnesiophyceae) with reference to cell covering, cell structure and flagellar apparatus. Br. Phycol. J.19: 357–369.
— and —. 1985. Ultrastructure of the flagellar apparatus inPleurochrysis (Class Prymnesiophyceae). Protoplasma125: 24–35.
— and —. 1988. Light and electron microscope observations of the type species ofSyracosphaera, S. pulchra (Prymnesiophyceae). Br. Phycol. J.23: 205–217.
Manton, I.. 1964. Further observations on the fine structure of the haptonema inPrymnesium parvum. Arch. f. Mikrobiologie49: 315–330.
— 1968. Further observations on the microanatomy of the haptonema inChrysochromulina chiton andPrymnesium parvum. Protoplasma66: 35–53.
— andLeedale, G.F. 1963. Observations on the fine structure ofPrymnesium parvum Carter. Arch. f. Mikrobiologie45: 285–303.
Moestrup, Ø. andH.A. Thomsen. 1986. Ultrastructure and reconstruction of the flagellar apparatus inChrysochromulina apheles sp. nov. (Prymnesiophyceae=Haptophyceae). Can. J. Bot.64: 593–610.
Parke, M. andP.S. Dixon. 1976. Check-list of British marine algae-third revision. J. Mar. Biol. Ass. U.K.56: 527–594.
Pienaar, R.N. 1976. The microanatomy ofHymenomonas lacuna sp. nov. (Haptophyceae). J. Mar. Biol. Ass. U.K.56: 1–11.
Preisig, H.R.. 1989. The flagellar base ultrastructure and phylogeny of chromophytes.In J.C. Green, B.S.C. Leadbeater and W.L. Diver, ed., The Chromophyte Algae: Problems and Perspectives, Systematics Association, Special Volume No. 38, pp. 167–187. Clarendon Press, Oxford.
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Green, J.C., Hori, T. The architecture of the flagellar apparatus ofPrymnesium patellifera (Prymnesiophyta). Bot Mag Tokyo 103, 191–207 (1990). https://doi.org/10.1007/BF02489625
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DOI: https://doi.org/10.1007/BF02489625