Ascertaining the interactions of brown seaweed-derived biostimulants and seawater temperature on spore release, germination, conchocelis, and newly formed blades of the commercially important red alga Neopyropia yezoensis?

Umanzor, Schery; Han, Sol; Song, Hye-In; Park, Ji-Sook; Critchley, Alan T.; Yarish, Charles; Kim, Jang K.

doi:10.1016/j.algal.2022.102692

Cited by 9 publications

(3 citation statements)

References 9 publications

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“…[58][59][60]. However, the benefits of such A. nodosum-based biostimulants need to be further studied as the active compounds might be dependent on environmental conditions, species and life stage [58,61].…”

Section: Agriculturementioning

confidence: 99%

A review on the chemical ecology of the Fucaceae holobionts: from fundamental knowledge to applications

Rousseau,

Demoulinger,

Rousvoal

et al. 2024

Comptes Rendus. Chimie

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In recent years, the use of brown seaweeds (Phaeophyceae) and especially Fucaceae, has increased for a variety of applications including food additives, nutraceuticals, cosmetics, and agriculture, mainly because most edible brown algae contain valuable bioactive compounds. However, the growing demand for some species, such as Ascophyllum nodosum, has become a major concern due to the risk of overharvesting. Along with this increasing demand, there is growing awareness of the intricate interactions between algal hosts and their microbiota. The Fucaceae are of particular interest in this regard, as several species exhibit specificity with regard to their associated endophytic fungi. Many of these associated microbes produce a wide range of bioactive compounds themselves and may contribute to well-known properties previously attributed to the host. For some compounds, an alternative to wild harvesting could be the production of molecules of interest by organic synthesis or by biotechnological production, e.g., in microbial cell factories incorporating selected members of the algal microbiota. This requires in-depth knowledge of the alga and its microbiota to recognize the origin and the synthesis pathways of these bioactive compounds. This review presents the current understanding of the Fucaceae and their associated microbiota as sources of chemical compounds intended for diverse applications.

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Section: Agriculturementioning

confidence: 99%

A review on the chemical ecology of the Fucaceae holobionts: from fundamental knowledge to applications

Rousseau,

Demoulinger,

Rousvoal

et al. 2024

Comptes Rendus. Chimie

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“…Pyropia yezoensis grows well at 5-18°C (Kim et al 2007), and therefore this alga is cultivated in the open water farms from December to March. Since climate change will continuously affect the Pyropia farming, technology development is critical to enhance thermal tolerance in Pyropia (Kim et al 2022, Umanzor et al 2022a.…”

Section: Experimental Designmentioning

confidence: 99%

Effects of biostimulants, AMPEP and Kelpak on the growth and asexual reproduction of Pyropia yezoensis (Bangiales, Rhodophyta) at different temperatures

Shin,

Xing,

Park

et al. 2024

Algae

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Acadian marine plant extract powder (AMPEP) and Kelpak are commercial biostimulants derived from brown algae Ascophyllum nodosum. This study was to determine if AMPEP and Kelpak can induce thermal resistance in Pyropia yezoensis. P. yezoensis blades were exposed to different concentrations (control: 0, low: 0.001, high: 1 ppm) of AMPEP and Kelpak at 10°C for 6 and 7 days, respectively. Those blades were then cultivated in von Stosch enriched seawater medium at different temperatures (10, 15, 20, and 25°C) with 12 : 12 L : D photoperiod and 100 μmol m-2 s-1 of photosynthetically active radiation for additional 15 days. Results showed that P. yezoensis reproduced archeospores at 20 and 25°C at all biostimulant conditions within 15 days. At lower temperatures (10 and 15°C), only AMPEP-treated P. yezoensis reproduced archeospores. P. yezoensis exposed to 1 ppm Kelpak exhibited higher phycoerythrin and phycocyanin contents than control and 0.001 ppm conditions at 15°C. AMPEP-treated conditions showed higher phycoerythrin and phycocyanin contents than control at 10°C. These results suggest that AMPEP and Kelpak may not enhance the thermal resistance of P. yezoensis. However, AMPEP stimulated archeospores release at lower temperatures. The treatment of AMPEP and Kelpak also increased the pigment contents in P. yezoensis. These results suggest that the use of seaweed-derived biostimulants can provide some economic benefits in P. yezoensis aquaculture. The enhancement of archeospores formation by AMPEP at lower temperature may also increase the productivity since Pyropia farming relies on the accumulation of secondary seedings via asexual reproduction.

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“…Micropropagation by tissue culture via direct regeneration is one technique employed to produce higher yields of uniform species, in shorter periods, to increase the production of propagules for commercial nurseries, out-planting and farming (Reddy et al 2008 Umanzor et al 2020Umanzor et al , 2022. Commercially produced seaweed extracts come in liquid or soluble powder form, and many are commonly derived from brown seaweeds, e.g., Ecklonia, Durvillaea, Laminaria and Ascophyllum.…”

Section: Introductionmentioning

confidence: 99%

Micropropagation of eucheumatoids using liquid extracts from the brown algae Ascophyllum nodosum (Fucales) and Laminaria digitata (Laminariales)

Borlongan,

Gaya,

Dimaano

et al. 2023

Preprint

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Eucheuma denticulatum and Kappaphycus alvarezii, two tropical red seaweeds, are two of the most commercially important, cultivated carrageenophytes in Southeast Asia. Their large-scale farming through repeated vegetative propagation and virtual mono-cropping has resulted in a variety of phyconomic issues. The efficacy of two European, commercial liquid extracts from the brown seaweeds, i.e., Ascophyllum nodosum (ANE), a fucoid, and Laminaria digitata (LDE), a kelp, on the direct formation of axes and survival of these two eucheumatoids was examined using tissue culture techniques. Seaweed apical sections (3–5 mm long) were cultured for 45 days, with different concentrations of ANE and LDE (i.e., 0.005, 0.05, 0.5, 1.5, and 2.5 mL L− 1) and compared with a control (UV-filtered seawater). Both liquid extracts improved the growth and morphogenesis of E. denticulatum and K. alvarezii in tissue culture. This study recommends a dilution rate of 0.05 mL LDE per L for E. denticulatum tissue culture resulting in a high percentage survival (i.e., 95.3 ± 0.9%), formation of direct axes (i.e., 95.3 ± 0.9%), and the longest length (i.e., 10.0 ± 0.3 mm) after a typical 45-day culture period. These data combined with the highest percentage formation of axes on day 14 (i.e., 88.0 ± 4.9%). However, 0.5 mL ANE per L is recommended for the tissue culture of K. alvarezii, given the relatively high final survival and direct axis formation (i.e., 96.2 ± 2.2%) and shoot length (i.e., 8.2 ± 0.1 mm). This study supports the application of these temperate, brown seaweed-derived extracts as phycobiostimulant enrichment in eucheumatoid micropropagation for mass production of plantlets for out-planting purposes.

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Ascertaining the interactions of brown seaweed-derived biostimulants and seawater temperature on spore release, germination, conchocelis, and newly formed blades of the commercially important red alga Neopyropia yezoensis?

Cited by 9 publications

References 9 publications

A review on the chemical ecology of the Fucaceae holobionts: from fundamental knowledge to applications

A review on the chemical ecology of the Fucaceae holobionts: from fundamental knowledge to applications

Effects of biostimulants, AMPEP and Kelpak on the growth and asexual reproduction of Pyropia yezoensis (Bangiales, Rhodophyta) at different temperatures

Micropropagation of eucheumatoids using liquid extracts from the brown algae Ascophyllum nodosum (Fucales) and Laminaria digitata (Laminariales)

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