The effect of photoperiod on receptacle initiation in<i>Ascophyllum nodosum</i>(L.) Le Jol

Terry, Lynne A.; Moss, Betty

doi:10.1080/00071618000650301

Cited by 31 publications

(17 citation statements)

References 13 publications

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“…Terry & Moss (1980) showed in a laboratory study that receptacles alone were formed during short days (8:16 h photopenod) and that more receptacles were produced at higher irradiances. In a 12:12 h photoperiod regime where both vegetative and reproductive laterals were produced, the number of both vegetative and reproductive laterals increased with irradiance (Terry & Moss 1980). There was a higher proportional increase in the number of receptacles, but the significance of this increase cannot be assessed from the data in their paper.…”

Section: Size Dependence In Rementioning

confidence: 99%

Patterns of reproductive effort in the brown alga Ascophyllum nodosum

Åberg¹

1996

Mar. Ecol. Prog. Ser.

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Section: Size Dependence In Rementioning

confidence: 99%

Patterns of reproductive effort in the brown alga Ascophyllum nodosum

Åberg¹

1996

Mar. Ecol. Prog. Ser.

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“…8 h light:16 h darkness), whereas the apices remained vegetative under long-day conditions (LD, e.g. 16 h light:8 h darkness) in the laboratory (Bird andMcLachlan 1976, Terry andMoss 1980). Increase in temperature and/or exceeding temperature thresholds, either alone or in combination with irradiance, stimulate receptacle and gamete maturation in fucoids (Mathieson et al 1976, Pearson and Brawley 1996, Kraufvelin et al 2012.…”

Section: Introductionmentioning

confidence: 99%

“…Reproductive seasonality may be a result of various abiotic factors that are used as environmental cues to induce and synchronize reproduction and/or to meet the physiological requirements for reproduction (Lüning andtom Dieck 1989, reviewed by Brawley andJohnson 1992). In fucoid species, environmental factors not only induce reproduction but also determine the period and duration of reproduction (Mathieson et al 1976, Terry and Moss 1980, Bäck et al 1991, Andersson et al 1994. Photoperiod is the most common factor inducing reproduction in seaweeds (Santelices 1990, Brawley andJohnson 1992).…”

Section: Introductionmentioning

confidence: 99%

Seasonal variations of Fucus vesiculosus fertility under ocean acidification and warming in the western Baltic Sea

et al. 2017

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Ocean warming and acidification may substantially affect the reproduction of keystone species such as Fucus vesiculosus (Phaeophyceae). In four consecutive benthic mesocosm experiments, we compared the reproductive biology and quantified the temporal development of Baltic Sea Fucus fertility under the single and combined impact of elevated seawater temperature and pCO 2 (1100 ppm). In an additional experiment, we investigated the impact of temperature (0-25°C) on the maturation of North Sea F. vesiculosus receptacles. A marked seasonal reproductive cycle of F. vesiculosus became apparent in the course of 1 year. The first appearance of receptacles on vegetative apices and the further development of immature receptacles of F. vesiculosus in autumn were unaffected by warming or elevated pCO 2 . During winter, elevated pCO 2 in both ambient and warmed temperatures increased the proportion of mature receptacles significantly. In spring, warming and, to a lesser extent, elevated pCO 2 accelerated the maturation of receptacles and advanced the release of gametes by up to 2 weeks. Likewise, in the laboratory, maturation and gamete release were accelerated at 15-25°C relative to colder temperatures. In summary, elevated pCO 2 and/or warming do not influence receptacle appearance in autumn, but do accelerate the maturation process during spring, resulting in earlier gamete release. Temperature and, to a much lesser extent, pCO 2 affect the temporal development of Fucus fertility. Thus, rising temperatures will mainly shift or disturb the phenology of F. vesiculosus in spring and summer, which may alter and/or hamper its ecological functions in shallow coastal ecosystems of the Baltic Sea.

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“…Bird and McLachlan (1976) in Fucus distichus and (Terry and Moss 1980) in Ascophyllum nodosum reported that receptacles formed under 8 and 12 h days but not under 16 h days.…”

Section: Discussionmentioning

confidence: 96%

Development of zygote for seed production of Sargassum swartzii in India

Kavale

Veeragurunathan

2016

J Appl Phycol

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Sargassum swartzii is economically exploited in India for alginate production. Indiscriminate harvesting of S. swartzii in natural beds leads to fast depletion. For sustainable utilization of this alga, it is inevitable to undertake its mass cultivation. Therefore, investigations were undertaken to develop a technology that can boost cultivation of this important species. An attempt was made to optimize the culture conditions for developing zygote-derived germlings for artificial seed production through vegetative parts such as vesicles and tertiary leaves. Vesicles and tertiary leaves (n = 90) were subjected to a range of irradiances (05, 25, and 45 μmol photons m −2 s −1 ), salinity (15, 20, 25, 30, 35, 40, 45, 50, and 55 psu), and photoperiod (8:16, 10:14, 12:12, 14:8, and 16:8-h (L/D) regimes under 30-day culture. Maximum regeneration (%) of receptacle from vesicles and tertiary leaf was observed at an irradiance of 45 μmol photons m −2 s −1 , 35 psu salinity, and 12:12-h (L/D) photoperiod which appears to be the most optimal condition. Variations in receptacle regeneration through vesicles and tertiary leaves were highly significant under different irradiances, salinities, and photoperiods (p < 0.05), and there were no significant differences between % regeneration of vesicles and tertiary leaves (p > 0.05). Germlings development followed the eight nuclei, one egg pattern which is quite common in the Sargassaceae. Within a day, multicellular germlings were developed with a bunch of unicellular rhizoids from fertilized oospores through repeated cell divisions. These findings confirmed that vesicles and tertiary leaves can be used as seed stock for the development of artificial seed production in S. swartzii as they contain primordial tissue for receptacle development.

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The effect of photoperiod on receptacle initiation inAscophyllum nodosum(L.) Le Jol

Cited by 31 publications

References 13 publications

Patterns of reproductive effort in the brown alga Ascophyllum nodosum

Patterns of reproductive effort in the brown alga Ascophyllum nodosum

Seasonal variations of Fucus vesiculosus fertility under ocean acidification and warming in the western Baltic Sea

Development of zygote for seed production of Sargassum swartzii in India

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