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The branched mitochondrial respiratory chain from the jellyfish Stomolophus sp2 as a probable adaptive response to environmental changes.

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Title: The branched mitochondrial respiratory chain from the jellyfish Stomolophus sp2 as a probable adaptive response to environmental changes.
Authors: Nevarez-Lopez, C. A.1 (AUTHOR), Muhlia-Almazan, A.1 (AUTHOR) amuhlia@ciad.mx, Gamero-Mora, E.1 (AUTHOR), Sanchez-Paz, A.2 (AUTHOR), Sastre-Velasquez, C. D.1 (AUTHOR), Lopez-Martinez, J.3 (AUTHOR)
Source: Journal of Bioenergetics & Biomembranes. Apr2024, Vol. 56 Issue 2, p101-115. 15p.
Subjects: Mitochondrial membranes, Jellyfishes, Mitochondria, Plant mitochondria, Cnidaria, Mass spectrometry, Climate change
Abstract: During their long evolutionary history, jellyfish have faced changes in multiple environmental factors, to which they may selectively fix adaptations, allowing some species to survive and inhabit diverse environments. Previous findings have confirmed the jellyfish's ability to synthesize large ATP amounts, mainly produced by mitochondria, in response to environmental challenges. This study characterized the respiratory chain from the mitochondria of the jellyfish Stomolophus sp2 (previously misidentified as Stomolophus meleagris). The in-gel activity from isolated jellyfish mitochondria confirmed that the mitochondrial respiratory chain contains the four canonical complexes I to IV and F0F1-ATP synthase. Specific additional activity bands, immunodetection, and mass spectrometry identification confirmed the occurrence of four alternative enzymes integrated into a branched mitochondrial respiratory chain of Stomolophus sp2: an alternative oxidase and three dehydrogenases (two NADH type II enzymes and a mitochondrial glycerol-3-phosphate dehydrogenase). The analysis of each transcript sequence, their phylogenetic relationships, and each protein's predicted models confirmed the mitochondrial alternative enzymes' identity and specific characteristics. Although no statistical differences were found among the mean values of transcript abundance of each enzyme in the transcriptomes of jellyfish exposed to three different temperatures, it was confirmed that each gene was expressed at all tested conditions. These first-time reported enzymes in cnidarians suggest the adaptative ability of jellyfish's mitochondria to display rapid metabolic responses, as previously described, to maintain energetic homeostasis and face temperature variations due to climate change. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Bioenergetics & Biomembranes is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: The branched mitochondrial respiratory chain from the jellyfish Stomolophus sp2 as a probable adaptive response to environmental changes.
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  Data: <searchLink fieldCode="AR" term="%22Nevarez-Lopez%2C+C%2E+A%2E%22">Nevarez-Lopez, C. A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Muhlia-Almazan%2C+A%2E%22">Muhlia-Almazan, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> amuhlia@ciad.mx</i><br /><searchLink fieldCode="AR" term="%22Gamero-Mora%2C+E%2E%22">Gamero-Mora, E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sanchez-Paz%2C+A%2E%22">Sanchez-Paz, A.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sastre-Velasquez%2C+C%2E+D%2E%22">Sastre-Velasquez, C. D.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lopez-Martinez%2C+J%2E%22">Lopez-Martinez, J.</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Bioenergetics+%26+Biomembranes%22">Journal of Bioenergetics & Biomembranes</searchLink>. Apr2024, Vol. 56 Issue 2, p101-115. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Mitochondrial+membranes%22">Mitochondrial membranes</searchLink><br /><searchLink fieldCode="DE" term="%22Jellyfishes%22">Jellyfishes</searchLink><br /><searchLink fieldCode="DE" term="%22Mitochondria%22">Mitochondria</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+mitochondria%22">Plant mitochondria</searchLink><br /><searchLink fieldCode="DE" term="%22Cnidaria%22">Cnidaria</searchLink><br /><searchLink fieldCode="DE" term="%22Mass+spectrometry%22">Mass spectrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink>
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  Data: During their long evolutionary history, jellyfish have faced changes in multiple environmental factors, to which they may selectively fix adaptations, allowing some species to survive and inhabit diverse environments. Previous findings have confirmed the jellyfish's ability to synthesize large ATP amounts, mainly produced by mitochondria, in response to environmental challenges. This study characterized the respiratory chain from the mitochondria of the jellyfish Stomolophus sp2 (previously misidentified as Stomolophus meleagris). The in-gel activity from isolated jellyfish mitochondria confirmed that the mitochondrial respiratory chain contains the four canonical complexes I to IV and F0F1-ATP synthase. Specific additional activity bands, immunodetection, and mass spectrometry identification confirmed the occurrence of four alternative enzymes integrated into a branched mitochondrial respiratory chain of Stomolophus sp2: an alternative oxidase and three dehydrogenases (two NADH type II enzymes and a mitochondrial glycerol-3-phosphate dehydrogenase). The analysis of each transcript sequence, their phylogenetic relationships, and each protein's predicted models confirmed the mitochondrial alternative enzymes' identity and specific characteristics. Although no statistical differences were found among the mean values of transcript abundance of each enzyme in the transcriptomes of jellyfish exposed to three different temperatures, it was confirmed that each gene was expressed at all tested conditions. These first-time reported enzymes in cnidarians suggest the adaptative ability of jellyfish's mitochondria to display rapid metabolic responses, as previously described, to maintain energetic homeostasis and face temperature variations due to climate change. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Journal of Bioenergetics & Biomembranes is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Type: general
      – SubjectFull: Jellyfishes
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      – SubjectFull: Mitochondria
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      – SubjectFull: Plant mitochondria
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      – SubjectFull: Mass spectrometry
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      – SubjectFull: Climate change
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      – TitleFull: The branched mitochondrial respiratory chain from the jellyfish Stomolophus sp2 as a probable adaptive response to environmental changes.
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              Text: Apr2024
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