Transcriptomic responses in ice ice diseased red algae Kappaphycus alvarezii

Riyaz, S.U. Mohammed; Inbakandan, D.; Bhavadharani, P.; Gopika, R.; Elson, Joanna L.; Muthiah, Bavanilatha; Manikandan, D.; Stalin-Dhas, T.; Nalini, S.; Simal-Gándara, Jesús

doi:10.1016/j.aquaculture.2021.737520

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…K. alvarezii is one of the seaweeds that is widely cultivated by the people of Nusa Lembongan because it has a fast growth rate (about 4.5% per day) (Rudke et al, 2022). In spite of that, K. alvarezii also has a high amount of polysaccharides in the cell wall so this can be a potential source of carrageenan (Manuhara et al, 2016;Riyaz et al, 2022). Carrageenan is a hydrocolloid compound extracted from red seaweed species namely K. alvarezii, Chondrus crispus, and Eucheuma spinosum (Azevedo et al, 2015;Bouanati et al, 2020;Arun et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Carrageenan Extraction of Kappaphycus alvarezii Seaweed from Nusa Lembongan Waters Using Different Alkaline Treatments

Dhewang,

Yudiati,

Subagiyo

et al. 2023

J. Kel. Trop.

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Kappaphycus alvarezii is a carrageenan-producing red seaweed that is widely cultivated in Nusa Lembongan waters, Bali, Indonesia. Carrageenan is generally extracted using an alkaline base,. iIn this study three different types of alkali were used to extract carrageenan originating from Nusa Lembongan Waters. This study aims to determine the quality of the extraction. The three alkalis used were KOH, NaOH, Ca(OH)2, and distilled water as a control. The 20 g dried seaweed was weighed, washed with the tap running water, and immersed in 0.15% alkaline solution (KOH, NaOH, Ca(OH)2) as well as distilled water for 24 hrs. Followed by rinsing with running water until pH was neutral. The solution was soaked and heated at 100ºC for 2 hours with a ratio of seaweed and water 1 kg in 20 L, and filtered. The extract was mixed with 1.25% KCI. The carrageenan precipitate was put in the oven at 60-80ºC until dry for 48 hours. The yield test results showed that the use of alkaline Ca(OH)2 resulted in a yield of 29.28% better than alkaline KOH (28.18%) and NaOH (27.7%). Based on the analysis of Fourier Transform Infrared Spectroscopy (FTIR), extraction using alkaline Ca(OH)2 showed functional groups characteristic of iota-carrageenan, whereas using alkaline KOH and NaOH showed functional groups characteristic of kappa-carrageenan.

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Section: Introductionmentioning

confidence: 99%

Carrageenan Extraction of Kappaphycus alvarezii Seaweed from Nusa Lembongan Waters Using Different Alkaline Treatments

Dhewang,

Yudiati,

Subagiyo

et al. 2023

J. Kel. Trop.

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Molecular responses of seaweeds to biotic interactions: A systematic review

Lang,

Cummins,

Paul

et al. 2024

Journal of Phycology

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Seaweed farming is the single largest aquaculture commodity with >30 million tonnes produced each year. Furthermore, the restoration of lost seaweed forests is gaining significant momentum, particularly for kelps in warming temperate areas. Whether in aquaculture settings, following restoration practices, or in the wild, all seaweeds undergo biotic interactions with a diverse range of co‐occurring or cocultured organisms. To date, most research assessing such biotic interactions has focused on the response of the organism interacting with seaweeds, rather than on the seaweeds themselves. However, understanding how seaweeds respond to other organisms, particularly on a molecular scale, is crucial for optimizing outcomes of seaweed farming or restoration efforts and, potentially, also for the conservation of natural populations. In this systematic review, we assessed the molecular processes that seaweeds undergo during biotic interactions and propose priority areas for future research. Despite some insights into the response of seaweeds to biotic interactions, this review specifically highlights a lack of characterization of biomolecules involved in the response to chemical cues derived from interacting organisms (four studies in the last 20 years) and a predominant use of laboratory‐based experiments conducted under controlled conditions. Additionally, this review reveals that studies targeting metabolites (70%) are more common than those examining the role of genes (22%) and proteins (8%). To effectively inform seaweed aquaculture efforts, it will be crucial to conduct larger scale experiments simulating natural environments. Also, employing a holistic approach targeting genes and proteins would be beneficial to complement the relatively well‐established role of metabolites.

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Transcriptomic responses in ice ice diseased red algae Kappaphycus alvarezii

Cited by 2 publications

References 39 publications

Carrageenan Extraction of Kappaphycus alvarezii Seaweed from Nusa Lembongan Waters Using Different Alkaline Treatments

Carrageenan Extraction of Kappaphycus alvarezii Seaweed from Nusa Lembongan Waters Using Different Alkaline Treatments

Molecular responses of seaweeds to biotic interactions: A systematic review

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