Structural Analysis of Carrageenan from Farmed Varieties of Philippine Seaweed

Aguilan, Jennifer; Broom, J. E.; Hemmingson, Jacqueline A.; Dayrit, Fabian M; Montaño, Marco Nemesio E.; Dancel, Maria Cristina A.; Niñonuevo, Milady R.; Furneaux, Richard H.

doi:10.1515/bot.2003.018

Cited by 51 publications

(30 citation statements)

References 17 publications

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“…Zuccarello et al (2006) included samples in their analysis identified initially as K. striatum from Tanzania and Madagascar which clustered in their K. alvarezii clade A. In contrast, their "sacol" variety samples were initially identified as K. cottonii based on a study by Aguilan et al (2003), but did not cluster with another sample morphologically identified as K. cottonii. Zuccarello et al (2006) concluded that the "sacol" variety was probably a distinct Kappaphycus species, but more sampling and morphological examination was needed.…”

Section: Confirmation Of Eucheuma and Kappaphycus Identifications Usimentioning

confidence: 99%

A molecular method for identification of the morphologically plastic invasive algal genera Eucheuma and Kappaphycus (Rhodophyta, Gigartinales) in Hawaii

2009

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A paucity of diagnostic morphological characters for identification and high morphological plasticity within the genera Eucheuma and Kappaphycus has led to confusion about the distributions and spread of three introduced eucheumoid species in Hawaii. Entities previously identified as E. denticulatum, K. alvarezii, and K. striatum have had profound negative effects on Oahu's coral reef ecosystems. The use of molecular tools to aid identification of algal species has been promising in other morphologically challenging taxa. We used three molecular markers (partial nuclear 28S rRNA, partial plastid 23S rRNA, and mitochondrial 5′ COI) and followed a DNA barcoding-like approach to identify Eucheuma and Kappaphycus samples from Hawaii. Neighbor-joining analyses were congruent in their separation of Eucheuma and Kappaphycus, and the resulting clusters were consistent with those revealed for global comparisons with the mitochondrial cox2-3 spacer and GenBank data. Based on these results, new insights were revealed into the distribution of these groups in Hawaii.

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Section: Confirmation Of Eucheuma and Kappaphycus Identifications Usimentioning

confidence: 99%

A molecular method for identification of the morphologically plastic invasive algal genera Eucheuma and Kappaphycus (Rhodophyta, Gigartinales) in Hawaii

2009

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“…The basic carrageenan structure is a disacchariderepeating unit of a 3-linked ␤-D-galactopyranosyl residue and a 4-linked 3,6-anhydro-␣-D-galactopyranosyl residue [15][16][17]. There are about 15 idealized structures identified by Greek letters that differ depending on the presence of the 3,6-anhydro bridge and the position of sulfate substituents [18].…”

mentioning

confidence: 99%

Structural analysis of κ-carrageenan sulfated oligosaccharides by positive mode Nano-ESI-FTICR-MS and MS/MS by SORI-CID

Aguilan

Dayrit

Zhang

et al. 2006

J. Am. Soc. Mass Spectrom.

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Structural analysis of sulfated oligosaccharides from -carrageenan of up to ten residues (MW Ͼ2 kDa) was successfully carried out by positive mode nano-ESI-FTICR-MS together with MS/MS using sustained off-resonance irradiation-collision induced dissociation (SORI-CID). Glycosidic bond cleavage reactions via the B-and Y-types of fragmentation were observed and enabled complete sequencing of the oligosaccharide samples. The positions of the labile sulfate substituents were observable using SORI-CID, enabling the determination of the sequence of the sulfated residues. (J Am Soc Mass Spectrom 2006, 17, 96 -103)

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“…Doty ex P.C. Silva in Silva et al (1996: 333) is the most cultivated seaweed in the world (Ask & Azanza 2002, Aguilan et al 2003, Hayashi et al 2007a, Bindu & Levine 2011, Bixler & Porse 2011. The cultivation of K. alvarezii began in the 1970s in the Philippines, and currently it has been introduced to more than 20 countries for mariculture purposes (Doty & Alvarez 1975, Doty 1985, Areces 1995, Ask & Azanza 2002, Ask et al 2003.…”

Section: Introductionmentioning

confidence: 99%

Molecular identification of the exotic lineage of <i>Kappaphycus alvarezii</i> (Rhodophyta, Solieriaceae) cultivated in the tropical region of Brazil

Araújo¹,

Miranda²,

Barros-Barreto³

et al. 2013

Phytotaxa

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Kappa carrageenan is an important phycocolloid extracted from the red seaweed Kappaphycus alvarezii. This species has been introduced into several regions, most recently in Brazil. The remote invasive potential of this seaweed in both south and southeast waters of Brazil (subtropical regions) has been established, but introduction in the northeastern tropical area is contested due to the absence of biological information. An unknown exotic lineage of K. alvarezii has been illegally introduced and cultivated in an area characterized by the presence of coral reefs in Paraíba, the northeastern Brazilian coast, since the beginning of the last decade. This work focuses on the molecular identification of these samples in comparison with sequences of other strains of K. alvarezii and congeners available in Genbank. Maximum likelihood (ML) and Bayesian inference (BI) analyses showed strong similarities between K. alvarezii cultivated in the tropical waters in Brazil and those lineages cultivated in Hawaii, Venezuela, Malaysia and Tanzania that have never shown invasive behavior. However, more detailed investigations and use of environmental monitoring are recommended before commercial cultivation of this species can be authorized in tropical region of Brazil.

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Structural Analysis of Carrageenan from Farmed Varieties of Philippine Seaweed

Cited by 51 publications

References 17 publications

A molecular method for identification of the morphologically plastic invasive algal genera Eucheuma and Kappaphycus (Rhodophyta, Gigartinales) in Hawaii

A molecular method for identification of the morphologically plastic invasive algal genera Eucheuma and Kappaphycus (Rhodophyta, Gigartinales) in Hawaii

Structural analysis of κ-carrageenan sulfated oligosaccharides by positive mode Nano-ESI-FTICR-MS and MS/MS by SORI-CID

Molecular identification of the exotic lineage of <i>Kappaphycus alvarezii</i> (Rhodophyta, Solieriaceae) cultivated in the tropical region of Brazil

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