Gene expression plasticity in Pocillopora corals from 2 locations on the Carrizales Reef, Pacific coast of Mexico

IF 0.5 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Ciencias Marinas Pub Date : 2020-06-26 DOI:10.7773/cm.v46i2.3062
Manuel A. Delgadillo Nuño, Marco A. Liñán Cabello, Erick Delgadillo Nuño, Clara E. Galindo Sanchez, E. C. Ituarte
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引用次数: 0

Abstract

espanolActualmente, la mayor amenaza que enfrentan los corales escleractinios es el cambio climatico acelerado. Suponiendo que la mayoria de los escleractinios son incapaces de una respuesta de adaptacion a los rapidos cambios globales, una respuesta alternativa seria la plasticidad fenotipica, que se describe clasicamente como aclimatacion. Con el fin de establecer una linea base para el estudio de la aclima-tacion en los corales de la costa mexicana del Pacifico, en el presente trabajo evaluamos la plasticidad de la respuesta fisiologica y molecular de 36 colonias pertenecientes a 3 morfoespecies del genero Pocillopora (Pocillopora cf. capitata, Pocillopora cf. damicornis y Pocilloporacf. verrucosa), ubicadas en 2 sitios (este y oeste) del arrecife Carrizales. Los datos ambientales revelaron mayor incidencia de luz y concen-traciones mas altas de clorofila en las muestras de agua del sitio oeste, lo que sugiere la presencia de al menos 2 microambientes con mayor y menor luz en el arrecife. Como respuesta, las morfoespecies del sitio oeste mostraron una mayor expresion genica y diferencias significativas en el contenido de pigmentos, la densidad de endosimbiontes y los marcadores metabolicos (ARN, ADN y proteinas). Dada la preocupacion por el futuro de los arrecifes, consideramos que el presente estudio puede servir como linea base para el estudio de la plasticidad fisiologica y molecular de los corales Pocillopora de Mexico, y con ello se podran desarrollar estrategias de conservacion para las morfoespecies clave en los arrecifes coralinos de la costa mexicana del Pacifico. EnglishThe greatest threat scleractinian corals face today is accelerated climate change. Assuming that most scleractinians are incapable of genetic adaptation to rapid global changes, the alternative response would be phenotypic plasticity, which is classically described as accli-matization. With the purpose of establishing a baseline for the study of acclimatization in corals of the Pacific coast of Mexico, we assessed the molecular and physiological response of 36 colonies of 3 Pocillopora morphospecies (Pocillopora cf. capitata, Pocillopora cf. damicornis, and Pocillopora cf. verrucosa) located at 2 sites (east and west) on Carrizales Reef. Our results show higher incidence of light and chlorophyll concentrations in seawater samples from the west side, suggesting the presence of at least 2 microenvironments with more and less light in the reef. In response, coral morphospecies from the west side showed higher gene expression and significant differences in pigment concentra-tions, endosymbiont densities, and metabolic markers (RNA, DNA, and proteins). Given the present concern about the future of coral reefs, we consider that the present study could be used as a baseline for the study of the physiological and molecular plasticity of Pocillopora corals in Mexican waters, so conservation strategies could be developed for key morphospecies in coral reefs on the Pacific coast of Mexico.
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墨西哥太平洋海岸Carrizales礁两个地点Pocillopora珊瑚的基因表达可塑性
目前,西班牙硬化珊瑚面临的最大威胁是加速的气候变化。假设大多数硬化症无法对快速的全球变化做出适应反应,另一种反应将是表型可塑性,这被经典地描述为适应。为了为研究墨西哥太平洋沿岸珊瑚的驯化奠定基础,在这项工作中,我们评估了位于卡里萨莱斯礁2个地点(东部和西部)的3种凤尾鱼属形态物种(凤尾鱼属、凤尾鱼属和凤尾鱼属)的36个菌落的生理和分子反应的可塑性。环境数据显示,西区水样中光的发生率较高,叶绿素的浓度较高,这表明礁石中至少存在2个光高和光低的微环境。作为回应,西部的形态物种在色素含量、内共生体密度和代谢标记(RNA、DNA和蛋白质)方面表现出更高的基因表达和显著差异。鉴于对珊瑚礁未来的担忧,我们认为,这项研究可以作为研究墨西哥珊瑚生理和分子可塑性的基础,从而为墨西哥太平洋沿岸珊瑚礁中的关键形态物种制定保护策略。今天面临的最大威胁是气候变化加速。假设大多数硬化症患者无法对快速的全球变化进行遗传适应,另一种反应将是表型可塑性,通常被描述为动作化。为了建立研究墨西哥太平洋沿岸珊瑚适应的基线,我们评估了位于Carrizales Reef上2个地点(东和西)的3个Pocillopora形态种(Pocillopora cf.capitata、Pocillopora cf.damiconis和Pocillopora cf.verrucosa)的36个殖民地的分子和生理反应。我们的结果显示,西侧海水样本中光和叶绿素浓度的发生率较高,表明礁石中存在至少2种或多或少有光的微环境。作为回应,西区的珊瑚形态物种在色素浓度、内共生密度和代谢标志物(RNA、DNA和蛋白质)方面表现出更高的基因表达和显著差异。鉴于目前对珊瑚礁未来的关切,我们认为,目前的研究可作为研究墨西哥水域珊瑚生理和分子可塑性的基线,以便为墨西哥太平洋沿岸珊瑚礁的关键形态制定保护战略。
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来源期刊
Ciencias Marinas
Ciencias Marinas 生物-海洋与淡水生物学
CiteScore
1.10
自引率
0.00%
发文量
9
审稿时长
>12 weeks
期刊介绍: A bilingual open-access publication, Ciencias Marinas (CM) is an international peer-reviewed journal that contains original research findings in all areas of marine science. It is published quarterly by the Autonomous University of Baja California, Mexico, and all its contents are publicly available on our journal website. Though a limited number of copies are still printed, the journal is mainly distributed in its electronic format. CM was conceived in 1973 as part of an academic project aimed to entice local researchers to publicly disclose their findings by adopting the culture of peer-review publishing. This academic project evolved into an international journal after accepting papers from researchers in the United States and, eventually, other parts of the world. Because of the diversity in authorship, CM issues were initially published in either Spanish or English, and occasionally in both languages. It was not until 1984 when CM included both language versions of all its contents, and it then became the fully bilingual journal it still is today. At CM we believe our inclusive format allows us not only to address a wider range of submissions from international authors but also to make published findings available to a wider international audience. So whether you are looking for information on the redfish in Icelandic waters or the physical and biological properties of the Gulf of California, feel free to peruse CM contents. You may find them to provide source material for your research.
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