Genetic diversity of Kappaphycus Doty and Eucheuma J. Agardh (Solieriaceae, Rhodophyta) in Southeast Asia

Lim, Phaik Eem; Tan, Ji; Phang, Siew Moi; Nikmatullah, Aluh; Hồng, Đặng Diễm; Sunarpi, Haji; Hurtado, Anicia Q.

doi:10.1007/s10811-013-0197-y

Cited by 48 publications

(42 citation statements)

References 46 publications

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“…15/MEN/ 2002 and 10/MEN/2012 aim to prevent the risk of diseases, but there are no protocols outlined for how this should be done and who is responsible as the competent authority. The decreasing of seaweed Kappaphycus and Eucheuma diversity and seedling quality in Indonesia become evidence for no farming precautionary approach; therefore, the spread of cultivated species through vegetative practices has been widely observed in seaweed growing regions (Halling et al 2013), even though there was a possibility to improve the quality of disease resistance of seaweed cultured by domestication of wild Kappaphycus and Eucheuma species (Lim et al 2013).…”

Section: Limited Guidance For the Use Of Precautionary Principlementioning

confidence: 99%

“…Rather than following recommendations to develop a strong evidence base to manage pests and diseases and improve culture methods through specific studies on disease management (Bondad-Reantaso et al 2005;Marino et al 2019), policy efforts are also currently focused on expanding cultivation into new areas in Indonesia. Internationally, further research of disease and pest risks in seaweed cultivation is recommended (Halling et al 2013;Lim et al 2013;Payne et al 2014;Dijkstra et al 2017;Badis et al 2019;Campbell et al 2019;Campbell et al 2019;Ward et al 2019) and should be included in biosecurity frameworks to support the national biosecurity strategy (Cottier-Cook et al 2016).…”

Section: Insufficient Evidence Of Biosecurity Hazards In Seaweed Aquamentioning

confidence: 99%

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An analysis of the current status and future of biosecurity frameworks for the Indonesian seaweed industry

et al. 2020

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Indonesia is the world largest producer of the red seaweeds Kappaphycus and Eucheuma; however, this country is facing significant challenges such as disease outbreaks, epiphyte infestations and a loss in seedling quality. Biosecurity practices have been widely adopted in other aquaculture sectors and when enforced can help to limit the introduction and spread of diseases and pests. To assess current capacity for biosecurity in seaweed aquaculture in Indonesia, a systematic analysis of policy frameworks including legislation, regulatory tools, and national standards was conducted. Biosecurity themes and risks were used to evaluate current national biosecurity content. The results identified major challenges faced by the industry in order to implement biosecurity policies in practice. Barriers to implementation included unspecific reference to the seaweed aquaculture sector, limited variety of approaches to biosecurity, limited use of up-to-date scientific evidence, insufficient guidance for the use of precaution and insufficient inclusion of specific biosecurity hazards. In general, although national regulations are currently under revision, current policies indicate a lack of clarity where biosecurity is included. Six recommendations are suggested to incorporate proactive biosecurity actions into current frameworks, with the aim of improving the health and sustainability of the seaweed aquaculture sector in Indonesia.

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Section: Limited Guidance For the Use Of Precautionary Principlementioning

confidence: 99%

Section: Insufficient Evidence Of Biosecurity Hazards In Seaweed Aquamentioning

confidence: 99%

An analysis of the current status and future of biosecurity frameworks for the Indonesian seaweed industry

et al. 2020

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“…Over the years, the mitochondrial cox2-3 spacer has been used for DNA barcoding (Tan et al, 2012), molecular identification and systematics (Zhao & He, 2011;Araújo et al, 2013;Tan et al, 2013;, species description (Ganzon-Fortes et al, 2012;Tan et al, 2014) and detection of bioinvasions (Conklin et al, 2009). The cox2-3 spacer was also combined with the mitochondrial cox1 gene in a collaborative study by the major carrageenan producers of Southeast Asia to document the genetic diversity of Kappaphycus and Eucheuma within the region (Lim et al, 2014a). Although not exhaustive, the study revealed several new haplotypes or potential species of Kappaphycus and Eucheuma, some of which were already being farmed commercially.…”

Section: Kappaphycus and Eucheumamentioning

confidence: 99%

“…Taxonomically, the use of this marker has revealed: (i) three genotypes in commercial strains of K. alvarezii, presumably originating from the Philippines (Ask & Azanza, 2002;Ask et al, 2003;Hurtado et al, 2015), as well as other strains unique to Africa and Hawaii; (ii) two potentially cryptic species of K. striatus in Southeast Asia; (iii) a genetic differences between K. malesianus, K. inermis and K. cottonii; (iv) three genotypes of E. denticulatum -commercially farmed strains, "Endong" strains from Southeast Asia and strains unique to Africa; (v) several genotypes that are to date not assessed; and (vi) potentially misidentified taxa, e.g. E. isiforme (Zuccarello et al, 2006;Conklin et al, 2009;Ganzon-Fortes et al, 2012;Lim et al, 2014a;Tan et al, 2012Tan et al, , 2013Tan et al, , 2014.…”

Section: Kappaphycus and Eucheumamentioning

confidence: 99%

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Advancing the taxonomy of economically important red seaweeds (Rhodophyta)

Lim

Yang

Tan

et al. 2017

European Journal of Phycology

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The cultivation of red seaweeds for food (nori), agar and carrageenans is the basis of a valuable industry. However, taxonomic knowledge of these cultivated seaweeds and their wild relatives has not kept pace with advances in molecular systematics despite the fundamental importance of being able to identify commercially important species and strains, discover cryptic and endemic taxa and recognize non-native species with potentially damaging diseases and epiphytes. This review focuses on molecular taxonomic advances in the cultivated red algae with the highest commercial value globally: Eucheuma, Kappaphycus, Porphyra sensu lato Porphyra/Pyropia and Gracilaria. All four genera are similarly taxonomically challenging. They are speciose, morphologically plastic, have poorly resolved species boundaries, and a stable taxonomy for each genus is yet to be achieved. Eucheuma and Kappaphycus are frequently misidentified and the molecular markers cox2-3 spacer, cox1 and RuBisCO spacer have helped to in understanding phylogenetic relationships, and identifying new species and haplotypes. In Porphyra sensu lato (Bangiales) species identification and phylogenetic relationships were highly problematic until a major taxonomic revision based on a two-gene phylogeny (18S and rbcL) resulted in nine genera of bladed species. Pyropia, with at least 89 species, three in nori cultivation, has potential for new commercial evaluation. The recently published Porphyra genome will aid the exploration of evolutionary relationships in this group. In Gracilaria sensu lato, earlier efforts to resolve species-level taxonomy and generic descriptions were superseded by application of molecular tools, including DNA sequences of the RuBisCO spacer, rbcL gene, 18S and the ITS region. Relationships between clades are now fairly well established, but much research on species and genera is still needed. Studies of these cultivated red algal genera highlight the need for a robust taxonomy, a more standardized approach to the molecular markers used and a comprehensive dataset for each representative species. RecentCurrent work on DNA-based species delimitation, the emergence of high throughput sequencing, multi-gene phylogenies and publication of whole genomes (e.g. Porphyra umbilicalis) and the large number of genomes in the pipeline (e.g. Gracilaria) is increasingly improving our understanding of phylogenomic relationships and hence a better understanding of species relationships. This knowledge, in turn, can then be applied to improving red seaweed aquaculture.

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Cultivation and Conversion of Tropical Red Seaweed into Food and Feed Ingredients, Agricultural Biostimulants, Renewable Chemicals, and Biofuel

Suryanarayan¹,

Neish²,

Nori³

et al. 2018

Blue Biotechnology

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Genetic diversity of Kappaphycus Doty and Eucheuma J. Agardh (Solieriaceae, Rhodophyta) in Southeast Asia

Cited by 48 publications

References 46 publications

An analysis of the current status and future of biosecurity frameworks for the Indonesian seaweed industry

An analysis of the current status and future of biosecurity frameworks for the Indonesian seaweed industry

Advancing the taxonomy of economically important red seaweeds (Rhodophyta)

Cultivation and Conversion of Tropical Red Seaweed into Food and Feed Ingredients, Agricultural Biostimulants, Renewable Chemicals, and Biofuel

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