Kappaphycus malesianus sp. nov.: a new species of Kappaphycus (Gigartinales, Rhodophyta) from Southeast Asia

Tan, Ji; Lim, Phaik Eem; Phang, Siew Moi; Rahiman, Adibi; Nikmatullah, Aluh; Sunarpi, Haji; Hurtado, Anicia Q.

doi:10.1007/s10811-013-0155-8

Cited by 23 publications

(13 citation statements)

References 27 publications

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“…. In contrast, preliminary results on genetic diversity in south-east Asia (Lim et al, 2014) have revealed numerous unidentified genotypes and potential species, suggesting that more genotypes are yet to be discovered. Therefore, future sampling efforts should focus on unsampled areas or places distant from seaweed farms.…”

Section: Kappaphycus and Eucheumamentioning

confidence: 91%

“…Kappaphycus alvarezii, K. striatus and E. denticulatum are among the best known because of their commercial value, but. all All six species of Kappaphycus are generally well documented in terms of morphology and to a certain extent, genetically (Tan et al, 2014). ); In in contrast, in Eucheuma the lack of specimens and taxonomic research have impeded progress over the years.…”

Section: Kappaphycus and Eucheumamentioning

confidence: 99%

“…malesianus (Tan et al, 2014). Currently genetic data are available (at least one molecular marker in published literature) for 83% and 10% of species of Kappaphycus and Eucheuma, respectively.…”

Section: Kappaphycus and Eucheumamentioning

confidence: 99%

“…Of the DNA markers used for these rhodophytes, the cox2-3 spacer was the preferred one due to its resolution in inter-and intraspecific relationships. 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).…”

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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Section: Kappaphycus and Eucheumamentioning

confidence: 91%

Section: Kappaphycus and Eucheumamentioning

confidence: 99%

Section: Kappaphycus and Eucheumamentioning

confidence: 99%