Genetic diversity of <i>Kappaphycus</i> species (Gigartinales, Rhodophyta) in the Philippines

Dumilag, Richard V.; Orosco, Fredmoore L; Lluisma, Arturo O.

doi:10.1080/14772000.2016.1157643

Cited by 26 publications

(34 citation statements)

References 28 publications

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“…This is where many potentially valuable carrageenophyte species occur that were previously overlooked for cultivation because of their morphological plasticity and cryptic nature. Dumilag et al (2016) also repeated a high haplotypic diversity of farmed Kappaphycus in the Philippines.…”

Section: Susceptibility To Disease and Epiphyte Infestationsmentioning

confidence: 75%

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Hurtado¹,

Neish²,

Critchley

2019

Phycologia

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Kappaphycus and Eucheuma, known collectively as 'eucheumatoids', are two related genera of red seaweeds which currently lead the rankings for volume of global production of farmed macroalgae. Since 2009, the combined cultivated volume of these carrageenophytes overtook that of the brown seaweeds Laminaria (Saccharina) and Undaria for global production tonnages, according to statistics of the Food and Agriculture Organization of the United Nations (FAO). The Southeast Asian region, particularly Indonesia, the Philippines, Malaysia, Tanzania, and East Africa are the major producers of eucheumatoid biomass. Despite several success stories of red seaweed cultivation and the economic and socioeconomic value of their ecosystem services, there remain a number of salutary lessons to be learned from 'agronomic' practices applicable to their extensive cultivation. These case studies should be further developed, analysed, and adopted as best-practice recommendations for future socioeconomic prosperity, as well as both economic and environmental sustainability. In this review, we propose the use of the term 'phyconomy' (i.e. large-scale production of marine macroalgae for economic and industrial purposes) as an alternative to the term agronomy (i.e. terrestrial plant production).

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Section: Susceptibility To Disease and Epiphyte Infestationsmentioning

confidence: 75%

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Hurtado¹,

Neish²,

Critchley

2019

Phycologia

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“…The genetic diversity, relatedness and phylogeny of eucheumatoids have been studied extensively (Zuccarello et al, 2006;Tan, Lim, & Phang, 2013;Tan et al, 2012;Dumilag, Orosco, & Lluisma, 2016), using both mitochondrial and plastid DNA markers. The earl iest publi cation showed t hat both mitochondrial and plastid markers clearly separated the genera Eucheuma and Kappaphycus from each other and separated species within these two genera (Zuccarello et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…The COI marker of red algae for this gene is very robust and it has greater variation than the COX2-COX2 spacer in eucheumatoids (Dumilag et al, 2018;Dumilag & Aguinaldo, 2017). Identification of Kappaphycus using COI has been performed in several countries: Hawaii (Conklin, Kurihara, & Sherwood, 2009), Malaysia (Tan, Lim, & Phang, 2013), and the Philipppines (Dumilag, Orosco, & Lluisma, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Follow up studies in several countries also showed that cultivated genotypes have been colonized, and even have been replacing wild genotypes in noncultivated habitats (Halling et al, 2013;Tano, Halling, Lind, Buriyo, & Wikström, 2015;Dumilag, Orosco, & Lluisma, 2016). It is clear that molecular methods can aid in determining species of red algae, however, these methods have not been extensively applied to cultivated eucheumatoids or 'cottonii' in Indonesia.…”

Section: Introductionmentioning

confidence: 99%

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Genetic Diversity Analysis of Cultivated Kappaphycus in Indonesian Seaweed Farms using COI Gene

Ratnawati¹,

Simatupang²,

Pong-Masak³

et al. 2020

Squalen Bull. Marine Fisheries Postharvest Biotech.

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Indonesia is a major player in the aquaculture of red algae, especially carrageenan producing ‘eucheumatoids’ such as Kappaphycus and Eucheuma. However, many current trade names do not reflect the evolutionary species and updated taxonomy, this is especially the case for eucheumatoid seaweeds that are highly variable in morphology and pigmentation. Genetic variation is also not known for the cultivated eucheumatoids in Indonesia. Therefore, this study aimed to determine the species and the level of genetic variation within species of cultivated eucheumatoids from various farms across Indonesia, spanning 150-1500 km, using the DNA barcoding method. Samples of seaweed were randomly collected at 14 farmed locations between April 2017 and May 2018. For this study the 5-prime end (~ 600 bp) of the mitochondrial-encoded cytochrome oxidase subunit one (COI) was amplified and sequenced. Morphological examination showed that the samples were quite variable in branching pattern and color. All samples collected from farms with floating line cultivation were identified based on COI sequences as Kappaphycus alvarezii and showed no variation in the COI gene. One farm sample with bottom-line cultivation was identified as K. striatus. The low genetic variation is in contrast to the phenotypic variation of samples, indicating that variation and phenotypic responses to environments is still found in samples with implications for growth rates and carrageenan yield and quality. Information about the genetic variation in stocks is important base knowledge for maintaining, expanding and continuing seaweed aquaculture.

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“…The study also revealed variants that existed in non-cultivated populations, and indicated that some of the strain names used in cultivation could not be genetically distinguished using these markers. Follow up studies showed that a cultivated strain is displacing the native strains in many areas (Dumilag, Orosco, & Lluisma 2016a, Halling et al, 2013, Tano, Halling, Lind, Buriyo, & Wikström, 2015 and higher levels of variation using other markers (cytochrome oxidase subunit 1) (Dumilag, Salvador, & Halling, 2016b). While these studies are extremely useful, the knowledge base especially for seaweed DNA analysis is very variable between countries.…”

Section: Introductionmentioning

confidence: 99%

A Beginner’s Guide to Molecular Identification of Seaweed

Zuccarello

Paul

2019

Squalen Bull. Marine Fisheries Postharvest Biotech.

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The most rapidly expanding areas for seaweed production in the world are the tropics, including Indonesia, yet these areas are also where molecular identification of local marine flora has only been sporadically employed. Furthermore, a goal for the Government of Indonesia is to diversify the types of seaweed that are being utilized, targeting valuable products and, hand in hand, to develop aquaculture techniques for these species. Morphological methods for species identification in algae are complex or unreliable, due to simple morphologies and plasticity. Therefore, it is crucial that the correct identification is made for species and varieties of commercial interest so that growth and biochemical results can be compared and contrasted between locations, across environments and over time without taxonomic ambiguity. This guide presents entry level methodologies for sample collection, DNA preservation, DNA extraction, PCR, and analyses of DNA sequence data, as a first step in the genetic characterization of both well-known cultivated species and identification of different species with potential economic properties.

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Genetic diversity of Kappaphycus species (Gigartinales, Rhodophyta) in the Philippines

Cited by 26 publications

References 28 publications

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Genetic Diversity Analysis of Cultivated Kappaphycus in Indonesian Seaweed Farms using COI Gene

A Beginner’s Guide to Molecular Identification of Seaweed

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