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Cellular Features of the Fronds and Turions in Spirodela polyrhiza
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  • Journal title : Applied Microscopy
  • Volume 43, Issue 4,  2013, pp.140-145
  • Publisher : Korean Society of Electron Microscopy
  • DOI : 10.9729/AM.2013.43.4.140
 Title & Authors
Cellular Features of the Fronds and Turions in Spirodela polyrhiza
Kim, InSun;
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Structural aspects of highly reduced vegetative organs in the aquatic Spirodela polyrhiza were examined using scanning and transmission electron microscopy. The study focused mainly on young and mature fronds with turions and their cellular features were compared. Mature fronds were composed of thin-walled chlorenchyma with highly vacuolated cells; most of which were frequently occupied by either tanniferous deposits or various crystals. Fronds of photoautotrophic offspring were produced from the meristematic region of the reproductive pockets within mother fronds, where they remained until separation. Moderate degrees of wall ingrowth and plasmalemma proliferation were detected briefly in the epidermis of daughter fronds during early development. Vascular tissues were generally much reduced, but air chambers were well-established in fronds. Chloroplasts having grana with several thylakoids were distributed throughout the plant, but starch grains were encountered frequently in the mesophyll chloroplasts of younger fronds and initial stage of the turion. Their cytoplasm was dense with small vacuoles in most cases. Further, big starch grains, up to several microns, occupying most of the plastid volume were formed in the turion prior to sink for overwintering. Plasmodesmata were numerous in the examined tissues, except mature turions, suggesting a symplastic pathway of the metabolites within body.
Spirodela polyrhiza;Ultrastructure;Frond;Turion;Electron microscopy;
 Cited by
Structural Differentiation of the Connective Stalk in Spirodela polyrhiza (L.) Schleiden,;

Applied Microscopy, 2016. vol.46. 2, pp.83-88 crossref(new window)
Appenroth K J and Bergfeld R (1993) Photophysiology of turion germination in Spirodela polyrhiza (L.) Schleiden XI. Structural changes during red light induced responses. J. Plant Physiol. 141, 583-588. crossref(new window)

Beaumont G, Lord A, and Grenier G (1980) Effects physiologiques de l'atrazine doses subl tales sur Lemna minor. V. Influence sur l'ultrastructure des chloroplastes. Can. J. Bot. 58, 1571-1577. crossref(new window)

Bernard F A, Bernard J M, and Denny P (1990) Flower structure, anatomy and life history of Wolffia australiana (Benth.) den Hartog & van der Plas. Bull. Torrey Bot. Club. 117, 18-26. crossref(new window)

Echlin P (1992) Low-Temperature Microscopy and Analysis, pp. 349-411, (Plenum Press, New York).

Echlin P, Lai C E, and Hayes T L (1982) Low-temperature X-ray microanalysis of the differentiating vascular tissue in root tips of Lemna minor L. J. Microsc. 126, 285-306. crossref(new window)

Formin A V, Ladygin G, and Semenova G A (1992) Accumulation of pigments and formation of chloroplast ultrastructure in the process of greening of etiolated duckweed plants. Sov. Plant Physiol. 38, 483-488.

Kim I (2007) Development of the root system in Spirodela polyrhiza (L.) Schleiden (Lemnaceae). J. Pl. Biol. 50, 540-547. crossref(new window)

Kim K and Kim I (2000) Structural aspect of the reduced free-floating hydrophyte, Spirodela polyrhiza. Korean J. Electron Microsc. 30, 233-240.

Klich M G, Mujica M B, and Fernandez O A (1985) The effect of gibberellic acid on the buoyancy of Spirodela intermedia W. Koch. Aquat. Bot. 21, 63-69. crossref(new window)

Kuo J, Ridge W R, and Lewis S V (1990) The leaf internal morphology and ultrastructure of Zostera muelleri Irmisch ex Aschers (Zosteraceae). A comparative study of the intertidal and subtidal forms. Aquat. Bot. 36, 217-236. crossref(new window)

Kwak M and Kim I (2008) Turion as dormant structure in Spirodela polyrhiza. Korean J. Microsc. 38, 307-314.

Landolt E (1986) The Family of 'Lemnaceae': A Monographic Study (Geobotanisches Institut der ETH, Zurich).

Landolt E (1998) Anatomy of the Lemnaceae (duckweeds). In: Extreme Adaptations in Angiospermous Hydrophytes, eds. Landolt E, Jager-Zurn I, and Schnell RAA, pp. 1-127, (Borntraeger, Berlin).

Lemon G D and Posluszny U (2000) Comparative shoot development and evolution in the Lemnaceae. Int'l. J. Plant Sci. 161, 733-748. crossref(new window)

Melaragno J E and Walsh M A (1976) Ultrastructural features of developing sieve elements in Lemna minor L. the protoplast. Amer. J. Bot. 63, 1145-1157. crossref(new window)

Walsh M A and Melaragno J E (1976) Ultrastructural features of developing sieve elements in Lemna minor L. sieve plate and sieve areas. Amer. J. Bot. 63, 1174-1183. crossref(new window)

Weber J A and Nooden L D (2005) The cause of sinking and floating in turion of Myriophyllum verticillatum. Aquat. Bot. 83, 219-226. crossref(new window)

White S L and Wise R R (1998) Anatomy and ultrastructure of Wolffia columbiana and Wolffia borealis, two nonvascular aquatic angiosperms. Int'l. J. Plant Sci. 159, 297-304. crossref(new window)