Successful initiation of sorus formation and viable zoospores in Ecklonia radiata on isolated lateral fronds under hatchery conditions

Article Plant Sciences

Density-dependence and seasonal variation in reproductive output and sporophyte production in the kelp, Ecklonia radiata

Masayuki Tatsumi et al.

Summary: The study found that adult density of Ecklonia does not affect per-capita zoospore production, but due to a minimum zoospore density required for sporophyte production, a decline in population-level output could impact recruitment.

JOURNAL OF PHYCOLOGY (2022)

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Article Biotechnology & Applied Microbiology

Optimising the zoospore release, germination, development of gametophytes and formation of sporophytes of Ecklonia radiata

Christina Praeger et al.

Summary: This study aims to quantify the impact of photoperiod, light intensity, temperature, nutrient media, and GeO2 on the key hatchery processes of germination, gametophyte development, and transition to sporophytes in the controlled cultivation of Ecklonia radiata. The results show that maintaining a 12 hour light:12 hour dark photoperiod at 17 degrees Celsius leads to higher germination rates, good gametophyte development, and higher transition to sporophytes. Additionally, limiting the use of GeO2 and extending the storage time of sorus-bearing fronds of sporophytes can increase the fertility of the brood stock.

JOURNAL OF APPLIED PHYCOLOGY (2022)

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Article Plant Sciences

Kelp nursery optimisation: density-dependent effects in early life-cycle stages of Ecklonia radiata (Laminariales)

Jakop Schwoerbel et al.

Summary: This study investigated the impact of different zoospore densities on the development of Ecklonia radiata gametophytes and sporophytes, finding significant effects on gametophyte size and sporophyte production based on initial zoospore density. The importance of initial zoospore density in optimizing the nursery stage of kelp aquaculture was clearly highlighted in the results.

BOTANICA MARINA (2022)

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Article Biotechnology & Applied Microbiology

Obtaining spores for the production of Saccharina latissima: seasonal limitations in nature, and induction of sporogenesis in darkness

Teis Boderskov et al.

Summary: The study indicated that Saccharina latissima in Denmark follows the general reproductive pattern of North Atlantic regions and demonstrated for the first time that sporogenesis in Saccharina latissima can be efficiently induced in darkness.

JOURNAL OF APPLIED PHYCOLOGY (2021)

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Article Plant Sciences

REPRODUCTIVE OUTPUT, SYNCHRONY ACROSS DEPTH AND INFLUENCE OF SOURCE DEPTH IN THE DEVELOPMENT OF EARLY LIFE STAGES OF KELP

Ana Giraldo-Ospina et al.

Summary: The research found that the reproductive performance of Ecklonia radiata does not significantly change across its depth range, although there are differences in sporophyte morphology. Kelp beds reproducing in deeper areas may contribute to replenishing their shallow counterparts.

JOURNAL OF PHYCOLOGY (2021)

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Article Plant Sciences

Reproductive phenology and morphology of Macrocystis pyrifera (Laminariales, Ochrophyta) from southern New Zealand in relation to wave exposure

Pablo P. Leal et al.

Summary: The study found that M. pyrifera reproduces year-round in different wave exposure environments in southern New Zealand, with similar patterns under different wave exposure conditions. Morphological characteristics vary with wave exposure, with individuals from wave-protected sites having larger and longer blades.

JOURNAL OF PHYCOLOGY (2021)

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Article Biotechnology & Applied Microbiology