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. 2021 Jun;57(3):1084-1088.
doi: 10.1111/jpy.13152. Epub 2021 Apr 2.

Sublethal biomass loss in Egregia menziesii (Phaeophyceae) reveals diffuse meristem tissue

Heather K Fulton-Bennett  1
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Sublethal biomass loss in Egregia menziesii (Phaeophyceae) reveals diffuse meristem tissue

Heather K Fulton-Bennett. J Phycol. 2021 Jun.

Abstract

Sublethal biomass loss has been found to have a variety of effects on marine macroalgae, from decreasing reproductive output to increasing individual survival and frond density. The ability of an individual to recover and persist through herbivore and wave damage is facilitated by the location of several meristematic growth regions throughout an individual. In kelps (Order Laminariales), meristems are found basally at the holdfast, at the base of each blade, and/or apically on each frond. In the intertidal kelp Egregia menziesii, fronds are thought to have an intercalary meristem at a transition zone between the main frond's midrib and a small terminal lamina. This study examined the effect of removing the terminal blade and transition zone on the elongation of the frond and found no significant difference in growth, contrary to expectations. Elongation occurred in the 30 cm of midrib at the apical end of fronds and was not isolated at the base of the terminal lamina as was previously thought. These results indicate the presence of a diffuse meristematic growth region that has not been reported in other kelps and may be an advantage for this intertidal species.

Keywords: Egregia; kelp; macroalgae; meristem; morphology; seaweed.

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References

    1. Abbott, I. A. & Hollenberg, G. J. 1976. Marine Algae of California. Stanford University Press, Stanford, CA, 827 pp.
    1. Black, R. 1974. Some biological interactions affecting intertidal populations of the kelp Egregia laevigata. Mar. Biol. 28:189-98.
    1. Black, R. 1976. The effects of grazing by the limpet, Acmaea insessa, on the kelp, Egregia laevigata, in the intertidal zone. Ecology 57:265-77.
    1. Blanchette, C. A., Miner, B. & Gaines, S. 2002. Geographic variability in form, size and survival of Egregia menziesii around Point Conception, California. Mar. Ecol. Prog. Ser. 239:69-82.
    1. Buchholz, C. & Luning, K. 1999. Isolated, distal blade discs of the brown alga Laminaria digitate form sorus, but not discs, near to the meristematic transition zone. J. Appl. Phycol. 16:579-84.

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