Megagametogenesis in Halophila johnsonii, a threatened seagrass with no known seeds, and the seed-producing Halophila decipiens (Hydrocharitaceae)

Aquatic Botany

Volumn 88, Issue 4, 2008, Pages 277-282

  York, Robert A ^a   Durako, Michael J ^a   Kenworthy, W Judson ^b   Freshwater, D Wilson ^a  

^a UNIVERSITY OF NORTH CAROLINA WILMINGTON   (United States)

^b NOAA EARTH SYSTEM RESEARCH LABORATORY   (United States)

Author keywords

Flowering; Halophila sp.; Megagametogenesis; Seagrass

Indexed keywords

COMPARATIVE STUDY; EMBRYONIC DEVELOPMENT; FERTILIZATION (REPRODUCTION); FLOWERING; GAMETOGENESIS; POLLINATION; SEAGRASS; SEED SET;

HALOPHILA; HALOPHILA DECIPIENS; HALOPHILA JOHNSONII; HYDROCHARITACEAE;

EID: 40649100518     PISSN: 03043770     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.aquabot.2007.11.005     Document Type: Article

References (33)

1. Asker S., and Jerling L. Apomixis in Plants (1992), CRC Press, Boca Raton, FL
2. Bicknell R.A., and Koltunow A.M. Understanding apomixis: recent advances and remaining conundrums. Plant Cell 16 (2004) 228-245
3. Dawes C.J., Lobban C.S., and Tomasko D.A. A comparison of the physiological ecology of the seagrasses Halophila decipiens Ostenfeld and Halophila johnsonii Eiseman from Florida. Aquat. Bot. 33 (1989) 154-194
4. den Hartog C. The Seagrasses of the World (1970), Amsterdam: North-Holland Publishing Co., Amsterdam
5. Den Hartog C., and Kuo J. Taxonomy and biogeography of seagrasses. In: Larkum A.W.D., Orth R.J., and Duarte C.M. (Eds). Seagrasses: Biology, Ecology and Conservation (2006), Springer, The Netherlands 1-23
6. Durako M.J., Kunzelman J.I., Kenworthy W.J., and Hammerstrom K.K. Depth-related variability in the photobiology of Halophila johnsonii and Halophila decipiens. Mar. Biol. 142 (2003) 1219-1228
7. Eiseman N.J., and McMillan C. A new species of seagrass, Halophila johnsonii, from the Atlantic coast of Florida. Aquat. Bot. 9 (1980) 15-19
8. Federal Register, 1998. Endangered and Threatened Species; Threatened Status for Johnson's Seagrass. 63, pp. 49035-49041.
9. Gallegos C.L., and Kenworthy W.J. Seagrass depth limits in the Indian River Lagoon (FL, USA): application of an optical water quality model. Estuar. Coastal Shelf Sci. 42 (1996) 267-288
10. Hall L.M., Hanisak M.D., and Virnstein R.W. Fragments of the seagrass Halodule wrightii and Halophila johnsonii as potential recruits in Indian River Lagoon, Florida. Mar. Ecol. Prog. Ser. 310 (2006) 109-117
11. Hammerstrom K.K., Kenworthy W.J., Fonseca M.S., and Whifield P.E. Seed bank, biomass, and productivity of Halophila decipiens, a deep water seagrass on the west Florida contininetal shelf. Aquat. Bot. 84 (2006) 110-120
12. Herbert D. Staminate flowers of Halophila hawaiiana: description and notes on its flowering ecology. Aquat. Bot. 25 (1986) 97-102
13. Jewett-Smith J., McMillan C., Kenworthy W.J., and Bird K. Flowering and genetic banding patterns of Halophila johnsonii and conspecifics. Aquat. Bot. 59 (1997) 323-331
14. Johnson E., and Williams S. Sexual reproduction in seagrasses: reports for five Caribbean species with details for Halodule wrightii Aschers. and Syringodium filiforme Kutz. Carib. J. Sci. 18 1-4 (1982) 61-70
15. Kenworthy, W.J., 1997. The Biological Status of the Seagrass, Halophila johnsonii Eiseman; An Updated Biological Status Review. Report to the Office of Protected Resources, National Marine Fisheries Service, Silver Spring, Maryland. 23 p.
16. Kenworthy W.J., Currin C.A., Fonseca M.S., and Smith G.S. Production, decomposition, and heterotrophic utilization of the seagrass Halophila decipiens in a submarine canyon. Mar. Ecol. Prog. Ser. 51 (1989) 277-290
17. Koltunow A.M. Apomixis: embryo sacs and embryos formed without meiosis or fertilization in ovules. Plant Cell 5 (1993) 1425-1437
18. Kuo J., and Kirkman H. Fruit, seeds and germination in the seagrass Halophila ovalis (Hydrocharitaceae). Bot. Mar. 35 (1992) 197-204
19. Kuo J., Shibuno T., Kanamoto Z., and Noro T. Halophila ovalis (R. Br.) Hook. f. from a submarine hot spring in southern Japan. Aquat. Bot. 70 (2001) 329-335
20. Lakshmanan K. Embryological studies in the Hydrocharitaceae. J. Indian Bot. Soc. 42 (1963) 15-18
21. Lakshmanan K., and Poornima S. Embryology of Halophila decipiens Ostenfeld. Beitr. Biol. Pflanzen 66 (1991) 179-187
22. Larkum A.W.D. Halophila capricorni (Hydrocharitaceae): a new species of seagrass from the Coral Sea. Aquat. Bot. 51 (1995) 319-328
23. McMillan C. Experimental studies on the flowering and reproduction of seagrasses. Aquat. Bot. 2 (1976) 87-92
24. McMillan C., and Soong K. An annual cycle of flowering, fruiting and seed reserve for Halophila decipiens Ostenfeld (Hydrocharitaceae) in Panama. Aquat. Bot. 34 (1989) 375-379
25. Nogler G.A. Gametophytic apomixis. In: Johrl B.M. (Ed). Embryology of Angiosperms (1984), Springer-Verlag, Berlin 475-518
26. Phillips R.C., and Meñez E.G. Seagrasses. Smithsonian Contr. Mar. Sci. 34 (1988) 1-104
27. Sherwood R.T. Nuclear DNA amount during sporogenesis and gametogenesis in sexual and aposporous buffelgrass. Sex. Plant Reprod. 8 (1995) 85-90
28. Sun K., Hunt K., and Hauser B.A. Ovule abortion in Arabidopsis triggered by stress. Plant Physiol. 135 (2004) 2358-2367
29. Uchimura M., Faye E.J., Shimada S., Arai S., Inoue T., and Nakamura Y. A re-evaluation of the taxonomic status of Halophila euphlebia Makino (Hydrocharitaceae) based on morphological features and ITS sequence data. Bot. Mar. 49 (2006) 111-121
30. Virnstein, R.W., Morris, L.J., Miller, J.D., Miller-Myers, R, 1997. Distribution and Abundance of Halophila johnsonii in the Indian River Lagoon. Technical Memorandum # 24. St. Johns River Water Management District, Palatka FL, 14 p.
31. Virnstein, R.W., Morris, L.J., Miller, J.D., 2007. Distribution and abundance of Halophila johnsonii in the Indian River Lagoon: an update. Technical Memorandum #51. St. Johns River Water Management District, Palatka FL, 16 p.
32. Waycott M., Freshwater D.W., York R.A., Calladine A., and Kenworthy W.J. Evolutionary trends in the seagrass genus Halophila (Thuars): Insights from molecular phylogeny. Bull. Mar. Sci. 71 (2002) 1299-1308
33. Zakaria M., Sidik B., and Hishamuddin O. Flowering, fruiting, and seedlings of Halophila beccarii Aschers. (Hydrocharitaceae) from Malaysia. Aquat. Bot. 65 (1999) 199-207