Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea
The presented laboratory experiment was designed to characterize the quantity and compositional variation of algal extracellular amino acids (AAs) that may represent an alternative nutrient source in a natural environment. To resemble algal bloom scenarios, analyses were conducted in mono- and/or co...
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Sciendo
2022-06-01
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| Series: | Oceanological and Hydrobiological Studies |
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| Online Access: | https://doi.org/10.26881/oandhs-2022.2.06 |
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| author | Hosny Shimaa El-Sheekh Mostafa Labib Wagdy |
| author_facet | Hosny Shimaa El-Sheekh Mostafa Labib Wagdy |
| author_sort | Hosny Shimaa |
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| description | The presented laboratory experiment was designed to characterize the quantity and compositional variation of algal extracellular amino acids (AAs) that may represent an alternative nutrient source in a natural environment. To resemble algal bloom scenarios, analyses were conducted in mono- and/or co-cultures of the bloom-forming species Skeletonema costatum, Scrippsiella trochoidea, Ulva fasciata, and Corallina officinalis during their active growth phase. The study revealed that S. costatum exhibited higher production of the dominant AAs than S. trochoidea. Alanine, lysine, and threonine acids are the dominant amino acids in S. costatum and S. trochoidea filtrates, which may play a role in mucus formation during mucosal phytoplankton blooms with negative ecological effects. On the other hand, aspartic, glutamine, alanine, and leucine acids are the dominant amino acids in macroalgae. In co-culture experiments, U. fasciata shows strong and rapid allelopathic activity against these two potentially harmful species. The AA production offers an advantage to species with the capacity to absorb them to form blooms. Thus, anthropogenic inorganic nutrient inputs may be less important for the development of algal blooms in coastal waters. A major difference that distinguishes this work from others is the use of specific multi-taxa cultures of phytoplankton and macroalgae. The study represents a new research effort in Alexandria waters. |
| format | Article |
| id | doaj-art-9238b91fa4774f8d8d75a3006d9e0d0f |
| institution | Kabale University |
| issn | 1897-3191 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Oceanological and Hydrobiological Studies |
| spelling | doaj-art-9238b91fa4774f8d8d75a3006d9e0d0f2025-01-20T11:10:26ZengSciendoOceanological and Hydrobiological Studies1897-31912022-06-0151217818810.26881/oandhs-2022.2.06Intercellular and extracellular amino acids of different bloom species in the Mediterranean SeaHosny Shimaa0El-Sheekh Mostafa1Labib Wagdy2National Institute of Oceanography and Fisheries, NIOF, EgyptBotany Department, Faculty of Science, Tanta University, Tanta, EgyptNational Institute of Oceanography and Fisheries, NIOF, EgyptThe presented laboratory experiment was designed to characterize the quantity and compositional variation of algal extracellular amino acids (AAs) that may represent an alternative nutrient source in a natural environment. To resemble algal bloom scenarios, analyses were conducted in mono- and/or co-cultures of the bloom-forming species Skeletonema costatum, Scrippsiella trochoidea, Ulva fasciata, and Corallina officinalis during their active growth phase. The study revealed that S. costatum exhibited higher production of the dominant AAs than S. trochoidea. Alanine, lysine, and threonine acids are the dominant amino acids in S. costatum and S. trochoidea filtrates, which may play a role in mucus formation during mucosal phytoplankton blooms with negative ecological effects. On the other hand, aspartic, glutamine, alanine, and leucine acids are the dominant amino acids in macroalgae. In co-culture experiments, U. fasciata shows strong and rapid allelopathic activity against these two potentially harmful species. The AA production offers an advantage to species with the capacity to absorb them to form blooms. Thus, anthropogenic inorganic nutrient inputs may be less important for the development of algal blooms in coastal waters. A major difference that distinguishes this work from others is the use of specific multi-taxa cultures of phytoplankton and macroalgae. The study represents a new research effort in Alexandria waters.https://doi.org/10.26881/oandhs-2022.2.06extracellular amino acidsskeletonema costatumscrippsiella trochoideaulva fasciatacorallina officinalis |
| spellingShingle | Hosny Shimaa El-Sheekh Mostafa Labib Wagdy Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea Oceanological and Hydrobiological Studies extracellular amino acids skeletonema costatum scrippsiella trochoidea ulva fasciata corallina officinalis |
| title | Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea |
| title_full | Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea |
| title_fullStr | Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea |
| title_full_unstemmed | Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea |
| title_short | Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea |
| title_sort | intercellular and extracellular amino acids of different bloom species in the mediterranean sea |
| topic | extracellular amino acids skeletonema costatum scrippsiella trochoidea ulva fasciata corallina officinalis |
| url | https://doi.org/10.26881/oandhs-2022.2.06 |
| work_keys_str_mv | AT hosnyshimaa intercellularandextracellularaminoacidsofdifferentbloomspeciesinthemediterraneansea AT elsheekhmostafa intercellularandextracellularaminoacidsofdifferentbloomspeciesinthemediterraneansea AT labibwagdy intercellularandextracellularaminoacidsofdifferentbloomspeciesinthemediterraneansea |