Effect of temperature and nutrients on color variants of Hypnea pseudomusciformis (Rhodophyta) and verification of genetic pattern for color inheritance

• Grant number: 19/08734-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: September 01, 2019
• End date: October 31, 2020
• Field of knowledge: Biological Sciences - Botany - Pant Physiology
• Principal Investigator: Mariana Cabral de Oliveira
• Grantee: Matheus Naves de Almeida
• Host Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The global climate changes affect directly the marine ecosystems and, therefore, have consequences for the economics and socials systems that depend on it. Previous studies showed that climate change, mainly the rising of temperature in the oceans, may have a devastating effect for the marine species. However, the effects of climate change interact with other environmental changes, such as pollution, altering the patterns of observed physiological responses. It is known that the macroalgae exert an essential function for the marine ecosystems because it is primary producer, and although their critical role in the coastal region of Brazil, their responses to such climatic changes are not yet sufficiently understood. In this project we propose a case study for the species of red alga Hypnea pseudomusciformis with individuals of the same population which have color variation (red and green) using physiological data to observe the response presented by both stains submitted to different temperatures (20ºC; 24ºC; 28ºC) and different concentration of nutrients (von Stoch 0%; von Stoch 25%; von Stoch 50%). The pattern of the genetic inheritance of the green lineage will also be verified through in vitro crosses.

Scientific publications

(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)

NAUER, FABIO; NAVES, MATHEUS; PLASTINO, ESTELA MARIA; OLIVEIRA, MARIANA CABRAL; FUJII, MUTUE TOYOTA. Ecotypes of Hypnea pseudomusciformis (Cystocloniaceae, Rhodophyta) revealed by physiological, morphological, and molecular data. JOURNAL OF APPLIED PHYCOLOGY, v. 32, n. 6, p. 4399-4409, DEC 2020. (18/11445-7, 19/08734-0)

NAUER, FABIO; MARCHI, FABIANA; NAVES, MATHEUS; PLASTINO, ESTELA MARIA; OLIVEIRA, MARIANA CABRAL. species dilemma: utilizing biological species concept to reconcile DNA barcode and morphological divergences for Hypnea pseudomusciformis (Gigartinales, Rhodophyta. JOURNAL OF APPLIED PHYCOLOGY, v. 34, n. 1, NOV 2021. (19/08734-0)