Distribution, phylogeographic structure and genetic variation in populations of some species of Rhodophyta from the order Batrachospermales in Brazil.

• Grant number: 13/06436-5
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: June 01, 2013
• End date: November 22, 2016
• Field of knowledge: Biological Sciences - Botany - Plant Taxonomy
• Principal Investigator: Orlando Necchi Junior
• Grantee: Monica Orlandi Paiano
• Host Institution: Instituto de Biociências, Letras e Ciências Exatas (IBILCE). Universidade Estadual Paulista (UNESP). Campus de São José do Rio Preto. São José do Rio Preto , SP, Brazil
• Associated scholarship(s): 15/01360-6 - Distribution, phylogeographic structure and genetic variation in Brazilian freshwater red algae (Batrachospermales - Rhodophyta), BE.EP.DR

Abstract

The project proposes the study of populations of species of Rhodophyta, the Batrachospermales order, based on information currently available (morphological and molecular) as well as new analysis proposed here. The following hypothesis can be tested: 1) the genetic structure of population should reveal distinct pattern among species, which is related to historical biogeographical connections of each type, 2) the number of haplotypes within a single population will be small (typically 1 to 2), however a much higher number of haplotypes (typically more than 5) in all the populations of each species is found, 3) the genetic similarity among populations will progressively smaller as more far between with greater genetic diversity inter than intrapopulation for all markers used, 4) the trends of genetic divergence for each of the markers tested are congruent. To test them, the following objectives are proposed: 1) to evaluate the patterns of genetic variability of populations of several species of the order Batrachospermales (Rhodophyta) in Brazil by analyzing molecular markers of nuclear and mitochondrial genomes and also check if there is correlation between variation in the environmental and molecular data obtained, 2) determine the levels of diversity of the nuclear internal spacer (ITS), the spacer between the genes subunits 2 and 3 of cytochrome c oxidase enzyme cox the region of 2-3 and "Barcode" region cox 1 gene (encoding subunit 1 of cytochrome c oxidase); 3) estimate the intra and interpopulational genetic variability of these three molecular markers, 4) check for each species investigated the existence of levels of genetic divergence between the strains detected. The proposed project presents issues of great importance, namely: 1) provide a comprehensive systematic work involving ecological, morphological and molecular study of a representative group of continental rhodophyta to subtropical and tropical regions, 2) be innovative in Brazil for continental macroalgae and could serve as a model for future studies with other groups of rhodophyta or other divisions, and 3) in a broader sense this study will provide subsidies to comparative approaches on knowledge of the biodiversity of continental algae in tropical regions, as well as the potential for application in conservation and biomonitoring areas in aquatic environments.

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

NECCHI, JR., ORLANDO; PAIANO, MONICA O.; WEST, JOHN A.; GANESAN, E. K.; LOISEAUX-DE GOER, SUSAN. Thorea indica sp nov (Thoreales, Rhodophyta) from Uttar Pradesh, India. ALGAE, v. 30, n. 4, p. 265-274, DEC 2015. (13/06436-5, 12/12016-6)

NECCHI, JR., ORLANDO; WEST, JOHN A.; RAI, SHIVA K.; GANESAN, E. K.; ROSSIGNOLO, NATALIA L.; DE GOER, SUSAN L.. Phylogeny and morphology of the freshwater red alga Nemalionopsis shawii (Rhodophyta, Thoreales) from Nepal. PHYCOLOGICAL RESEARCH, v. 64, n. 1, p. 11-18, JAN 2016. (13/06436-5, 12/12016-6)

PAIANO, MONICA O.; NECCHI, JR., ORLANDO. Phylogeography of the freshwater red alga Batrachospermum viride-brasiliense (Rhodophyta, Batrachospermales). PHYCOLOGICAL RESEARCH, v. 65, n. 1, p. 80-85, JAN 2017. (13/06436-5, 12/12016-6)

PAIANO, MONICA ORLANDI; DEL CORTONA, ANDREA; COSTA, JOANA F.; LIU, SHAO-LUN; VERBRUGGEN, HEROEN; DE CLERCK, OLIVIER; NECCHI, JR., ORLANDO. Organization of plastid genomes in the freshwater red algal order Batrachospermales (Rhodophyta). JOURNAL OF PHYCOLOGY, v. 54, n. 1, p. 25-33, FEB 2018. (15/01360-6, 12/12016-6, 13/06436-5, 16/07808-1)

PAIANO, MONICA O.; NECCHI, JR., ORLANDO. Phylogeography of the freshwater red alga Setacea puiggariana (Rhodophyta, Batrachospermales) in Brazil. PHYCOLOGIA, v. 56, n. 4, p. 390-395, 2017. (13/06436-5, 12/12016-6)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

PAIANO, Monica Orlandi. Filogeografia de algumas espécies de Batrachospermales (Rhodophyta) no Brasil. 2016. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Instituto de Biociências Letras e Ciências Exatas. São José do Rio Preto São José do Rio Preto.