Molecular diversity of the Caulerpa racemosa–Caulerpa peltata complex (Caulerpaceae, Bryopsidales) in New Caledonia, with new Australasian records for C. racemosa var. cylindracea

Sauvage, Thomas; Payri, Claude; Draisma, Stefano G. A.; Reine, Willem F. Prud’homme van; Verbruggen, Heroen; Belton, Gareth S.; Gurgel, Carlos Frederico D.; Gabriel, Daniela; Sherwood, Alison R.; Fredericq, Suzanne

doi:10.2216/11-116.1

Cited by 31 publications

(29 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was initially hypothesized to be a Lessepssian immigrant, or a hybrid between C. racemosa var. turbinata and an unknown tropical variety [31] until molecular analyses identified a possible source population around the Australian-Pacific area [30,31,32]. It can invade different habitats, grow rapidly, and spread though fragmentation and propagation [33,34], leading to profound structural and functional alterations of native benthic assemblages and fish metabolism [9,35,36].…”

Section: Introductionmentioning

confidence: 99%

The Potential Exploitation of the Mediterranean Invasive Alga Caulerpa cylindracea: Can the Invasion Be Transformed into a Gain?

et al. 2016

View full text Add to dashboard Cite

Recently, there is a growing interest towards the development of strategies for invasive seaweed control and exploitation as source of secondary metabolites. Here, we investigated the potential of exploitation in biotechnology and recycling options in eradication programs of the lipidic extract of the Mediterranean invasive seaweed Caulerpa cylindracea (Chlorophyta). The chemical characterization was carried out by means of multinuclear and multidimensional NMR spectroscopy. The fatty acid profile of C. cylindracea assessed the presence of several types of molecules known for antioxidant activity such as carotenoids, chlorophylls, pheophytins, and sterols. The NMR spectroscopy showed also the characteristic signals of saturated, unsaturated, and free fatty acids as well as other metabolites including the biopolymer polyhydroxybutyrate. The lipidic extract exerted an antioxidant activity corresponding to 552.14 ± 69.13 mmol Trolox equivalent/g (ORAC) and to 70.3 ± 2.67 mmol Trolox equivalent/g (TEAC). The extract showed an antibacterial activity against several Vibrio species, suggesting its potential use in the control of diseases in mariculture. Our results show that C. cylindracea, representing a critical hazard in coastal areas, could be transformed into a gain supporting specific management actions to reduce the effects of human pressures.

show abstract

Section: Introductionmentioning

confidence: 99%

The Potential Exploitation of the Mediterranean Invasive Alga Caulerpa cylindracea: Can the Invasion Be Transformed into a Gain?

et al. 2016

View full text Add to dashboard Cite

show abstract

“…racemosa var. cylindracea , endemic from the southern and northern coasts of Western Australia, northeastern Australia and New Caledonia [28,29]. We identified and compared putative bacterial epiphytic and endophytic communities in the native and invaded ranges, in order to test for the Australian origin of the invasive Mediterranean variety and the stability of the associations between host lineages and endophytic bacterial communities, and to identify possible strains that may have passively or actively participated in the invasive trajectory of their host.…”

Section: Introductionmentioning

confidence: 99%

Invasion Is a Community Affair: Clandestine Followers in the Bacterial Community Associated to Green Algae, Caulerpa racemosa, Track the Invasion Source

et al. 2013

View full text Add to dashboard Cite

Biological invasions rank amongst the most deleterious components of global change inducing alterations from genes to ecosystems. The genetic characteristics of introduced pools of individuals greatly influence the capacity of introduced species to establish and expand. The recently demonstrated heritability of microbial communities associated to individual genotypes of primary producers makes them a potentially essential element of the evolution and adaptability of their hosts. Here, we characterized the bacterial communities associated to native and non-native populations of the marine green macroalga Caulerpa racemosa through pyrosequencing, and explored their potential role on the strikingly invasive trajectory of their host in the Mediterranean. The similarity of endophytic bacterial communities from the native Australian range and several Mediterranean locations confirmed the origin of invasion and revealed distinct communities associated to a second Mediterranean variety of C . racemosa long reported in the Mediterranean. Comparative analysis of these two groups demonstrated the stability of the composition of bacterial communities through the successive steps of introduction and invasion and suggested the vertical transmission of some major bacterial OTUs. Indirect inferences on the taxonomic identity and associated metabolism of bacterial lineages showed a striking consistency with sediment upheaval conditions associated to the expansion of their invasive host and to the decline of native species. These results demonstrate that bacterial communities can be an effective tracer of the origin of invasion and support their potential role in their eukaryotic host’s adaptation to new environments. They put forward the critical need to consider the 'meta-organism' encompassing both the host and associated micro-organisms, to unravel the origins, causes and mechanisms underlying biological invasions.

show abstract

“…However, recent molecular studies of the Caulerpa racemosa-peltata complex have revealed the existence of at least eleven distinct species-level entities in the complex (Sauvage & al., 2013;Belton & al., 2014), together with a confirmed high phenotypic plasticity of certain lineages/species that morphologically partial overlap with some others (Belton & al., 2014). The latter revision of this complex drove to reinstate earlier-described species for subspecies, varieties and forms of C. racemosa and C. peltata, among them the invasive variety of C. racemosa, for which the earlier name C. cylindracea Sonder was reinstated (Belton & al., 2014).…”

Section: Introductionmentioning

confidence: 99%

“…This was due to similarities in gross morphology, conspicuous phenotypic plasticity or evidences from ecological performance and expansive behaviour of local populations. Nowadays, identification of these taxa can be achieved by means of fixed morphological features and genetic evidence (Famà & al., 2000;Durand & al., 2002;Verlaque & al., 2000Verlaque & al., , 2003Nuber & al., 2007;Sauvage & al., 2013;Belton & al., 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The large number of the nuclear rDNA ITS1-5.8S-ITS2 region sequences obtained from specimens collected worldwide can be used to distinguish among Caulerpa taxa (Famà & al., 2000;Durand & al., 2002;Verlaque & al., 2000Verlaque & al., , 2003Nuber & al., 2007;Sauvage & al., 2013;Belton & al., 2014). Yet, to identify the "invasive taxon", a combination of morphological identikit and molecular data has been applied in solely 5 amongst the 13 Mediterranean countries in which C. racemosa sensu lato has been reported so far (France, Italy, Greece, Croatia and Cyprus) (reviewed in Klein & Verlaque, 2008), since the first report from Libya in 1990 (Nizamuddin, 1991) (see Fig.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

First record of Caulerpa cylindracea (Caulerpaceae, Chlorophyta) in Andalusia (Southern Spain)

Altamirano

Andreakis

Souza-Egipsy

et al. 2014

Anal. Jard. Bot. Madr.

View full text Add to dashboard Cite

Three different species of Caulerpa (Caulerpaceae, Chlorophyta) cooccur in the Mediterranean Sea: two of them are found at the centraleastern basin and are typically considered non aggressive components of the Lessepsian flora [(C. chemnitzia (Esper) J.V. Lamouroux and C. racemosa var. lamourouxii (Turner) Weber-van Bosse f. requienii (Montagne) Weber van Bosse)]; a third taxon, C. cylindracea Sonder has aggressively expanded its range since its first observation in 1990, and it is nowadays reported from nearly all the Mediterranean countries. We report a population of C. cylindracea from Almería (Andalusia, Southern Iberian Peninsula) at −30 m depth as to be the westernmost record of the invasive variety on the Mediterranean European coast. Therefore, we made use of morphological description and molecular phylogenetics to provide a complete identification of this invasive seaweed in Southern Spain. Our findings are discussed in light of the composition of the receptor communities, such as maërl bed, edges of Posidonia oceanica (Linnaeus) Delile, and their ecology. Our results confirmed the suggested directionality of the invasive pathway to be westward to the Strait of Gibraltar, mainly supported by sea currents and vectors of anthropogenic origin.

show abstract

Molecular diversity of the Caulerpa racemosa–Caulerpa peltata complex (Caulerpaceae, Bryopsidales) in New Caledonia, with new Australasian records for C. racemosa var. cylindracea

Cited by 31 publications

References 23 publications

The Potential Exploitation of the Mediterranean Invasive Alga Caulerpa cylindracea: Can the Invasion Be Transformed into a Gain?

The Potential Exploitation of the Mediterranean Invasive Alga Caulerpa cylindracea: Can the Invasion Be Transformed into a Gain?

Invasion Is a Community Affair: Clandestine Followers in the Bacterial Community Associated to Green Algae, Caulerpa racemosa, Track the Invasion Source

First record of <em>Caulerpa cylindracea</em> (Caulerpaceae, Chlorophyta) in Andalusia (Southern Spain)

Contact Info

Product

Resources

About