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Almeida-Saá AC, Umanzor S, Zertuche-González JA, Cruz-López R, Muñiz-Salazar R, Ferreira-Arrieta A, Bonet Melià P, García-Pantoja JA, Rangel-Mendoza LK, Vivanco-Bercovich M, Ruiz-Montoya L, Guzmán-Calderón JM, Sandoval-Gil JM. Bathymetric origin shapes the physiological responses of Pterygophora californica (Laminariales, Phaeophyceae) to deep marine heatwaves. J Phycol 2024; 60:483-502. [PMID: 38264946 DOI: 10.1111/jpy.13433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 12/19/2023] [Accepted: 01/09/2024] [Indexed: 01/25/2024]
Abstract
Kelp communities are experiencing exacerbated heat-related impacts from more intense, frequent, and deeper marine heatwaves (MHWs), imperiling the long-term survival of kelp forests in the climate change scenario. The occurrence of deep thermal anomalies is of critical importance, as elevated temperatures can impact kelp populations across their entire bathymetric range. This study evaluates the impact of MHWs on mature sporophytes of Pterygophora californica (walking kelp) from the bathymetric extremes (8-10 vs. 25-27 m) of a population situated in Baja California (Mexico). The location is near the southernmost point of the species's broad distribution (from Alaska to Mexico). The study investigated the ecophysiological responses (e.g., photobiology, nitrate uptake, oxidative stress) and growth of adult sporophytes through a two-phase experiment: warming simulating a MHW and a post-MHW phase without warming. Generally, the effects of warming differed depending on the bathymetric origin of the sporophytes. The MHW facilitated essential metabolic functions of deep-water sporophytes, including photosynthesis, and promoted their growth. In contrast, shallow-water sporophytes displayed metabolic stress, reduced growth, and oxidative damage. Upon the cessation of warming, certain responses, such as a decline in nitrate uptake and net productivity, became evident in shallow-water sporophytes, implying a delay in heat-stress response. This indicates that variation in temperatures can result in more prominent effects than warming alone. The greater heat tolerance of sporophytes in deeper waters shows convincing evidence that deep portions of P. californica populations have the potential to serve as refuges from the harmful impacts of MHWs on shallow reefs.
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Affiliation(s)
- Antonella C Almeida-Saá
- Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Ensenada, Mexico
| | - Schery Umanzor
- College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Juneau, Alaska, USA
| | | | - Ricardo Cruz-López
- Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Ensenada, Mexico
| | - Raquel Muñiz-Salazar
- Escuela de Ciencias de la Salud, Universidad Autónoma de Baja California, Ensenada, Mexico
| | | | - Paula Bonet Melià
- Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Ensenada, Mexico
| | | | - Laura K Rangel-Mendoza
- Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Mexico
| | - Manuel Vivanco-Bercovich
- Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Ensenada, Mexico
| | - Leonardo Ruiz-Montoya
- Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Ensenada, Mexico
| | | | - Jose Miguel Sandoval-Gil
- Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Ensenada, Mexico
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Sandoval-Gil JM, Sánchez-Barredo M, Cruz-López R, Zertuche-González JA, Beas-Luna R, Lorda J, Montaño-Moctezuma G. Shading by giant kelp canopy can restrict the invasiveness of Undaria pinnatifida (Laminariales, Phaeophyceae). J Phycol 2023; 59:552-569. [PMID: 36973579 DOI: 10.1111/jpy.13330] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 12/20/2022] [Accepted: 03/11/2023] [Indexed: 06/15/2023]
Abstract
The spread of non-indigenous and invasive seaweeds has increased worldwide, and their potential effects on native seaweeds have raised concern. Undaria pinnatifida is considered among the most prolific non-indigenous species. This species has expanded rapidly in the Northeast Pacific, overlapping with native communities such as the iconic giant kelp forests (Macrocystis pyrifera). Canopy shading by giant kelp has been argued to be a limiting factor for the presence of U. pinnatifida in the understory, thus its invasiveness capacity. However, its physiological plasticity under light limitation remains unclear. In this work, we compared the physiology and growth of juvenile U. pinnatifida and M. pyrifera sporophytes transplanted to the understory of a giant kelp forest, to juveniles growing outside of the forest. Extreme low light availability compared to that outside (~0.2 and ~4.4 mol photon ⋅ m-2 ⋅ d-1 , respectively) likely caused a "metabolic energy crisis" in U. pinnatifida, thus restricting its photoacclimation plasticity and nitrogen acquisition, ultimately reducing its growth. Despite M. pyrifera juveniles showing photoacclimatory responses (e.g., increases in photosynthetic efficiency and lower compensation irradiance, Ec ), their physiological/vegetative status deteriorated similarly to U. pinnatifida, which explains the low recruitment inside the forest. Generally, our results revealed the ecophysiological basis behind the limited growth and survival of juvenile U. pinnatifida sporophytes in the understory.
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Affiliation(s)
- Jose Miguel Sandoval-Gil
- Universidad Autónoma de Baja California (UABC), Instituto de Investigaciones Oceanológicas, Ensenada, Baja California, 22830, Mexico
| | - Mariana Sánchez-Barredo
- Universidad Autónoma de Baja California (UABC), Instituto de Investigaciones Oceanológicas, Ensenada, Baja California, 22830, Mexico
| | - Ricardo Cruz-López
- Universidad Autónoma de Baja California (UABC), Instituto de Investigaciones Oceanológicas, Ensenada, Baja California, 22830, Mexico
| | - José Antonio Zertuche-González
- Universidad Autónoma de Baja California (UABC), Instituto de Investigaciones Oceanológicas, Ensenada, Baja California, 22830, Mexico
| | - Rodrigo Beas-Luna
- Universidad Autónoma de Baja California (UABC), Facultad de Ciencias Marinas, Ensenada, Baja California, 22830, Mexico
| | - Julio Lorda
- Universidad Autónoma de Baja California (UABC), Facultad de Ciencias, Ensenada, Baja California, 22830, Mexico
| | - Gabriela Montaño-Moctezuma
- Universidad Autónoma de Baja California (UABC), Instituto de Investigaciones Oceanológicas, Ensenada, Baja California, 22830, Mexico
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Cruz-López R, Carrano CJ. Iron uptake, transport and storage in marine brown algae. Biometals 2023; 36:371-383. [PMID: 36930341 DOI: 10.1007/s10534-023-00489-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 01/10/2023] [Indexed: 03/18/2023]
Abstract
Iron is a vital although biologically inaccessible trace nutrient for nearly all forms of life but "free" iron can be deleterious to cells and thus iron uptake and storage must be carefully controlled. The marine environment is particularly iron poor making mechanisms for its uptake and storage even more imperative. In this brief review we explore the known and potential iron uptake and storage pathways for the biologically and economically important marine brown macroalgae (seaweeds/kelps).
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Affiliation(s)
- Ricardo Cruz-López
- Instituto de Investigaciones Oceanológicas (IIO), Universidad Autónoma de Baja California (UABC), Ensenada, Baja California, México.
| | - Carl J Carrano
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA, 92182-1030, USA
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Yarimizu K, Cruz-López R, Auerbach H, Heimann L, Schünemann V, Carrano CJ. Iron uptake and storage in the HAB dinoflagellate Lingulodinium polyedrum. Biometals 2017; 30:945-953. [PMID: 29067573 DOI: 10.1007/s10534-017-0061-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 10/17/2017] [Indexed: 10/18/2022]
Abstract
The iron uptake and storage systems of terrestrial/higher plants are now reasonably well understood with two basic strategies being distinguished: Strategy I involves the induction of an Fe(III)-chelate reductase (ferrireductase) along with Fe(II) or Fe(III) transporter proteins while strategy II plants have evolved sophisticated systems based on high-affinity, iron specific, binding compounds called phytosiderophores. In contrast, there is little knowledge about the corresponding systems in marine, plant-like lineages. Herein we report a study of the iron uptake and storage mechanisms in the harmful algal bloom dinoflagellate Lingulodinium polyedrum. L. polyedrum is an armored dinoflagellate with a mixotrophic lifestyle and one of the most common bloom species on Southern California coast widely noted for its bioluminescent properties and as a producer of yessotoxins. Short term radio-iron uptake studies indicate that iron is taken up by L. polyedrum in a time dependent manner consistent with an active transport process. Based on inhibitor and other studies it appears that a reductive-oxidative pathway such as that found in yeast and the green alga Chlamydomonas reinhardtii is likely. Of the various iron sources tested vibrioferrin, a photoactive and relatively weak siderophore produced by potentially mutualistic Marinobacter bacterial species, was the most efficient. Other more stable and non-photoactive siderophores such as ferrioxamine E were ineffective. Several pieces of data including long term exposure to 57Fe using Mössbauer spectroscopy suggest that L. polyedrum does not possess an iron storage system but rather presumably relies on an efficient iron uptake system, perhaps mediated by mutualistic interactions with bacteria.
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Affiliation(s)
- Kyoko Yarimizu
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA, 92182-1030, USA
| | - Ricardo Cruz-López
- Department of Biological Oceanography, Centro de Investigación Científica y de Educación Superior deEnsenada, Ensenada, BC, Mexico
| | - Hendrik Auerbach
- Department of Physics, University of Kaiserslautern, 67663, Kaiserslautern, Germany
| | - Larissa Heimann
- Department of Physics, University of Kaiserslautern, 67663, Kaiserslautern, Germany
| | - Volker Schünemann
- Department of Physics, University of Kaiserslautern, 67663, Kaiserslautern, Germany
| | - Carl J Carrano
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA, 92182-1030, USA.
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Cruz-López R, Maske H. The Vitamin B1 and B12 Required by the Marine Dinoflagellate Lingulodinium polyedrum Can be Provided by its Associated Bacterial Community in Culture. Front Microbiol 2016; 7:560. [PMID: 27199906 PMCID: PMC4858720 DOI: 10.3389/fmicb.2016.00560] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 04/04/2016] [Indexed: 11/13/2022] Open
Abstract
In this study we established the B1 and B12 vitamin requirement of the dinoflagellate Lingulodinium polyedrum and the vitamin supply by its associated bacterial community. In previous field studies the B1 and B12 demand of this species was suggested but not experimentally verified. When the axenic vitamin un-supplemented culture (B-ns) of L. polyedrum was inoculated with a coastal bacterial community, the dinoflagellate’s vitamin growth limitation was overcome, reaching the same growth rates as the culture growing in vitamin B1B7B12-supplemented (B-s) medium. Measured B12 concentrations in the B-s and B-ns cultures were both higher than typical coastal concentrations and B12 in the B-s culture was higher than in the B-ns culture. In both B-s and B-ns cultures, the probability of dinoflagellate cells having bacteria attached to the cell surface was similar and in both cultures an average of six bacteria were attached to each dinoflagellate cell. In the B-ns culture the free bacterial community showed significantly higher cell abundance suggesting that unattached bacteria supplied the vitamins. The fluorescence in situ hybridization (FISH) protocol allowed the quantification and identification of three bacterial groups in the same samples of the free and attached epibiotic bacteria for both treatments. The relative composition of these groups was not significantly different and was dominated by Alphaproteobacteria (>89%). To complement the FISH counts, 16S rDNA sequencing targeting the V3–V4 regions was performed using Illumina-MiSeq technology. For both vitamin amendments, the dominant group found was Alphaproteobacteria similar to FISH, but the percentage of Alphaproteobacteria varied between 50 and 95%. Alphaproteobacteria were mainly represented by Marivita sp., a member of the Roseobacter clade, followed by the Gammaproteobacterium Marinobacter flavimaris. Our results show that L. polyedrum is a B1 and B12 auxotroph, and acquire both vitamins from the associated bacterial community in sufficient quantity to sustain the maximum growth rate.
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Affiliation(s)
- Ricardo Cruz-López
- Oceanografía Biológica, Centro de Investigación Científica y de Educación Superior de Ensenada Ensenada, Mexico
| | - Helmut Maske
- Oceanografía Biológica, Centro de Investigación Científica y de Educación Superior de Ensenada Ensenada, Mexico
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