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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Phylogeography of the freshwater red alga Batrachospermum viride-brasiliense (Rhodophyta, Batrachospermales)

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Paiano, Monica O. ; Necchi, Jr., Orlando
Total Authors: 2
Document type: Journal article
Source: PHYCOLOGICAL RESEARCH; v. 65, n. 1, p. 80-85, JAN 2017.
Web of Science Citations: 1

Phylogeography of Batrachospermum viride-brasiliense was investigated using two mitochondrial regions: the cox2-3 spacer and the barcode region of cox1 gene. Eighty-seven individuals were analyzed from nine stream segments throughout its distribution in Brazil. Ten cox2-3 spacer and nine cox1 haplotypes were observed among the individuals studied (87 vs. 43, respectively). Divergences among haplotypes were relatively low (<= 2.4% for cox2-3 and <= 1.8% for cox1). Most locations have a single haplotype, whereas only two locations had two haplotypes for both markers. The haplotype network for cox2-3 showed a phylogeographic trend from the south towards the southeast with haplotypes from the southeast more closely related. For cox1 a trend from the southeast spreading towards the south and north was revealed, with the southern haplotypes more closely associated. Results clearly indicated that B. viride-brasiliense represents a single species and the phylogeographic pattern consisted of a closely connected group of haplotypes from southern and southeastern Brazil. Levels of intra-and inter-population variation were similar for the two markers with slightly higher values for cox2-3. The trend observed in this study is similar to that in other members of Batrachospermales with little variation within a stream segment (one or two haplotypes) and more distant haplotypes showing higher divergences. This pattern could be attributed to the fact that colonization of a site might be rare by a single event with subsequent proliferation of the population. The geographic distribution of B. viride-brasiliense was interpreted according to the biogeographic models proposed for South America being limited to three morpho-climatic domains or biogeographic provinces: tropical Atlantic rainforest, sub-tropical rainforest and cerrado (Brazilian savannah). (AU)

FAPESP's process: 12/12016-6 - Revision of the genera Sirodotia and Batrachospermum (Rhodophyta, Batrachospermales): sections Acarposporophytum, Aristata, Macrospora, Setacea, Turfosa and Virescentia
Grantee:Orlando Necchi Junior
Support type: Regular Research Grants
FAPESP's process: 13/06436-5 - Distribution, phylogeographic structure and genetic variation in populations of some species of Rhodophyta from the order Batrachospermales in Brazil.
Grantee:Monica Orlandi Paiano
Support type: Scholarships in Brazil - Doctorate