Effects of continuous illumination on the rhizome of Caulerpa prolifera1

Chen, James C. W.

doi:10.1093/oxfordjournals.pcp.a074694

Cited by 8 publications

(5 citation statements)

References 0 publications

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“…Rhizome elongation of C. prolifera is constant over 12 h intervals (Chen 1971), similar to our finding for C. cupressoides. The diversity of diurnal growth patterns found in Caulerpa spp.…”

Section: Discussionsupporting

confidence: 90%

“…Previous studies of Caulerpa prolifera have indicated that chloroplast streaming and rhizoid initiation exhibit diurnal patterns, but only chloroplast streaming is endogenously controlled (Chen andJacobs 1968, Dawes andBarilotti 1969, Chen 197~). Rhizome elongation of C. prolifera is constant over 12 h intervals (Chen 1971), similar to our finding for C. cupressoides.…”

Section: Discussionmentioning

confidence: 99%

“…Diurnal patterns exist in various physiological and growth processes of macroalgae (Chen 1971, Kageyama et al 1979, Mishkind et al 1979, Ramus and Rosenberg 1980, Stromgren 1984, and of seagrasses (Oremland and Taylor 1977, Pulich 1978, Pregnall etal. 1984, 1987.…”

mentioning

confidence: 99%

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Light availability and diurnal growth of a green macroalga (Caulerpa cupressoides) and a seagrass (Halophila decipiens)

Williams

Dennison

1990

Mar. Biol.

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Abstract. The effects of daily light period on diurnal growth patterns of a green macroalga [Caulerpa cupressoides v. lycopodium f. elegans (J. Agardh) Weber-van Bosse] and a seagrass (Halophila decipiens Ostenfeld) were investigated in Salt River submarine canyon in the US Virgin Islands in summer 1984. The daily light period, in which quantum irradiance exceeded the light saturation point for photosynthesis of the macroalga and seagrass, was manipulated in situ using lamps and shades. Plant growth was measured every 6 h for 7 d under natural and experimental daily light periods. C. cupressoides grew at the same rate day and night. H. decipiens grew more during the day than at night, a pattern that persisted under continuous light and dark treatments, indicating endogenous control of diurnal growth. Growth vs daily light period curves indicate that C. cupressoides grew faster than H. decipiens in short daily light periods, consistent with the observation that the macroalga penetrates to deeper water than the seagrass in Salt River canyon. Overall growth (day + night) of H. decipiens was unaffected in lengthened light periods and reduced in shortened light periods. Chlorophyll content of C. cupressoides was not correlated with light availability, while that of H. decipiens was positively correlated. The alga and seagrass had different diurnal growth patterns but similar overall growth responses to daily light periods. This study shows that diurnal growth patterns are probably under endogenous control, while overall growth is a response to in situ light conditions. its lower depth limit to depths of at least 45 m. Caulerpa spp. and the seagrass grow similarly by extending stolon apices or apical rhizome meristems, respectively, along the sediment surface, then adding upright photosynthetic tissue and new roots or rhizoids. Stolons and rhizomes grow at a rate of ~ 1 cm d-1 in Salt River canyon , Josselyn et al. 1986). Despite such similarities, these plants are different evolutionarily.

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“…Rhizome elongation of C. prolifera is constant over 12 h intervals (Chen 1971), similar to our finding for C. cupressoides. The diversity of diurnal growth patterns found in Caulerpa spp.…”

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Light availability and diurnal growth of a green macroalga (Caulerpa cupressoides) and a seagrass (Halophila decipiens)

Williams

Dennison

1990

Mar. Biol.

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“…CHEN, 1971;WAITE etal., 1972;SCHOENE, 1972;FEUILADE, 1972;FAUST and GANTI, 1973). When continuously exposed to light for 16 h. a day, Caulerpaprolifera plants showed optimum growth at 2,500 lux.…”

Section: Discussionmentioning

confidence: 99%

Effect of different light intensities on growth, amino-acid, fat and sugar concentrations inCaulerpa prolifera (Foerskal) Lamouroux

Khaleafa

Mohsen

Shaalan

1982

Hydrobiological Bulletin

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“…3) which may be related to the shading of individuals by their neighbours in the medium density plots when they are growing more rapidly in full light (Bazzaz & Harper, 1977). In the coenocytic alga Caulerpa prolifera, the plastochron, which in this plant represents the time interval between the initiation of successive rhizoid clusters, was significantly longer in 12-h photoperiods than in continuous light (Chen & Jacobs, 1966;Chen, 1971).…”

Section: Days After Treatmentmentioning

confidence: 88%