Physiological and photosynthetic performance of native microalgae strains isolated from Baja California

Authors

DOI:

https://doi.org/10.18633/biotecnia.v27.2665

Keywords:

Microalgae, growth rate, chlrophyll a fluorescence, photosynthesis performance, electron transport rate

Abstract

To assess the physiological status and photosynthetic activity of sixteen microalgae strains isolated from Baja California, growth estimations and in vivo chlorophyll a (Chl-a) fluorescence measurements were performed. The bacillariophyte Diploneis sp. exhibited the highest growth rate, while the highest cell densities were observed in Tetraselmis suecica and Navicula sp. strain 2. Most strains showed effective maximum quantum yield (Fv/Fm) values above 0.50. The highest values of maximum electron transport rate (ETRₘ) and saturation irradiance (Iₖ) were recorded for Amphora sp. strain 6 and Heterococcus sp. The diatom Navicula sp. strain 4 showed the highest content of chlorophyll a and carotenoids. The culture conditions used in this study were not stressful for the microalgae strains. Notably, T. suecica showed high maximum cell density and Fv/Fm values; Amphora sp. strain 6 exhibited the highest electron transport rate (ETRₘ) and elevated saturation irradiance (Iₖ). This work highlights the interspecific variability in physiological and photosynthetic traits among native strains, which can be promising candidates for aquaculture and biotechnology applications requiring robust photosynthetic performance.

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Author Biographies

Dra., https://orcid.org/0000-0002-9634-0872

She holds a degree in Oceanology from the University of Colima. She completed her master's and doctoral studies at the Center for Scientific Research and Higher Education of Ensenada (CICESE). She has completed research stays at the Institute of Chemistry of the National Autonomous University of Mexico (UNAM) and the University of Valparaíso, Chile. She currently works as a Category "C" Senior Technician in the Department of Aquaculture at CICESE. She has taught at the University of Colima, the Center for Nanosciences and Nanotechnology at UNAM, and CICESE.
Dr. Molina has experience in the isolation and characterization of marine natural products derived from microalgae cultures for the control of pathogenic bacteria of the Vibrio genus, important in public health and aquaculture. She has participated in projects related to the characterization of microalgae cultures for use in aquaculture and in oceanographic surveys to study spatiotemporal variations in primary productivity and physicochemical parameters in the Mexican Pacific. To date, she has one patent in the process of being written, one publication under review, and another in the correction stage. She has taught various seminars both within and outside of CICESE and has collaborated in the training of several bachelor's, master's, and doctoral students in aspects related to microalgae cultivation and biotechnology. She has spoken at national and international conferences and is the author of nine scientific publications. She has served on thesis committees of three bachelor's and 10 master's students, co-supervised four master's theses, served on two doctoral synods, and is a member of the National System of Researchers with the distinction of National Researcher Level 1.

Dra., https://orcid.org/0000-0001-9324-9224

Ella es originaria de Guanajuato y migró a Ensenada, Baja California para estudiar Oceanología en la Universidad Autónoma de Baja California. Es madre de tres hijas, Teresa, Ana Luisa y Rocío, de profesión flautista, violinista y cellista respectivamente. Concluyó estudios de maestría y doctorado en el CICESE. Realizó una estancia postdoctoral acerca de fotobiología con el Dr. López Figueroa en la Universidad de Málaga, España. Es investigadora del Departamento de Acuicultura del CICESE desde 1995. Es parte del núcleo académico básico de los posgrado de Acuicultura y del de Ciencias de la Vida del CICESE. Es miembro del plantel de profesores del programa de doctorado en Biotecnologia Avanzada de la Universidad de Málaga. Las líneas de investigación que desarolla en su grupo de trabajo del “Laboratorio de Biotecnología Algal (BIOAL)” en el CICESE, se centran en el estudio del fitoplancton desde el aislamiento de nuevas especies y su preservación a corto y largo plazo, investiga el efecto de diversas variables ambientales respecto al crecimiento, producción de biomasa, composición proximal, respuesta fotosintética, perfil de ácidos grasos y de aminoácidos para diversos usos en la acuicultura, agricultura, biotecnología, farmacología, cosmeceútica, nutraceútica, biocombustibles, control de la eutrofización y búsqueda de compuestos con actividad antimicrobiana.

En su obra académica es autora de 74 artículos publicados, sus artículos tienen índice h de 20 y cuenta con 1169 citas en SCOPUS, es miembro del Sistema Nacional de Investigadores Nivel III. Su contribución en la formación de recursos humanos es la dirección de 16 tesis de licenciatura terminadas y 1 en proceso, 41 tesis de maestría terminadas y 5 en proceso, 9 tesis de doctorado terminadas y 3 en proceso. Ha impartido 8 cursos de licenciatura y 55 cursos de posgrado. Ha sido responsable de 18 proyectos obtenidos por concurso y ha particpado en 15 proyectos de investigación nacionales e internacionales. Cuenta con 126 participaciones en congresos nacionales e internacionales y ha impartido 93 pláticas. Es autora de 2 patentes en México. Es revisor de artículos de diversas revistas nacionales e internacionales. Forma parte de diversas redes de investigación y es la coordinador nacional de la red de microalgas del recursos genéticos microbianos e invertebrados (SUBNARGEMI).

References

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Volumen 27, enero - diciembre

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Published

2025-09-18

How to Cite

Molina-Cárdenas, C. A., & Sánchez Saavedra, M. del P. (2025). Physiological and photosynthetic performance of native microalgae strains isolated from Baja California. Biotecnia, 27, e2665. https://doi.org/10.18633/biotecnia.v27.2665

Issue

Vol. 27 (2025): January - December

Section

Research Articles

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