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Muller A, Morales-Montero P, Boss A, Hiltmann A, Castaneda-Alvarez C, Bhat AH, Arce CCM, Glauser G, Joyce SA, Clarke DJ, Machado RAR. Bacterial bioluminescence is an important regulator of multitrophic interactions in the soil. Cell Rep 2024; 43:114817. [PMID: 39365701 DOI: 10.1016/j.celrep.2024.114817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 03/14/2024] [Accepted: 09/17/2024] [Indexed: 10/06/2024] Open
Abstract
Enormous efforts have been made to understand the functions of bioluminescence; however, its relevance in soil ecosystems has barely been investigated. In addition, our understanding of the biological relevance of bioluminescence is hampered by the scarcity of tools to genetically manipulate this trait. Using the symbionts of entomopathogenic nematodes, Photorhabdus bacteria, we show that bioluminescence plays important regulatory roles in multitrophic interactions in the soil. Through genetic modifications and exploiting natural variability, we provide direct evidence for the multifunctional nature of bioluminescence. It regulates abiotic and biotic stress resistance, impacts other trophic levels, including nematodes, insects, and plants, and contributes to symbiosis. Our study contributes to understanding the factors that have driven the evolution and maintenance of this trait in belowground ecosystems.
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Affiliation(s)
- Arthur Muller
- Experimental Biology Group, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland
| | - Patricia Morales-Montero
- Experimental Biology Group, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland
| | - Anja Boss
- Experimental Biology Group, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland
| | - Alexandre Hiltmann
- Experimental Biology Group, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland
| | - Carlos Castaneda-Alvarez
- Experimental Biology Group, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland
| | - Aashaq H Bhat
- Experimental Biology Group, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland
| | - Carla C M Arce
- Laboratory of Fundamental and Applied Research in Chemical Ecology, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland
| | - Gaetan Glauser
- Neuchâtel Platform of Analytical Chemistry, University of Neuchâtel, 2000 Neuchâtel, Switzerland
| | - Susan A Joyce
- APC Microbiome Ireland, University College Cork, T12 YT20 Cork, Ireland; School of Biochemistry and Cell Biology, University College Cork, T12 YN60 Cork, Ireland
| | - David J Clarke
- APC Microbiome Ireland, University College Cork, T12 YT20 Cork, Ireland; School of Microbiology, University College Cork, T12 YN60 Cork, Ireland
| | - Ricardo A R Machado
- Experimental Biology Group, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland.
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Seesamut T, Oba Y, Jirapatrasilp P, Martinsson S, Lindström M, Erséus C, Panha S. Global species delimitation of the cosmopolitan marine littoral earthworm Pontodrilus litoralis (Grube, 1855). Sci Rep 2024; 14:1753. [PMID: 38243053 PMCID: PMC10799051 DOI: 10.1038/s41598-024-52252-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/16/2024] [Indexed: 01/21/2024] Open
Abstract
The marine littoral earthworm Pontodrilus litoralis (Grube, 1855) is widely distributed and is reported as a single species. This study utilized an integrative taxonomic approach based upon morphological examination, phylogenetic reconstruction, and molecular species delimitation, to test whether the taxon is a single species or a species complex. For this, a total of 114 P. litoralis specimens collected from North America, Africa, Australia and Oceania, Europe and Asia were used. The phylogenetic analyses revealed deeply divergent mitochondrial lineages and a high level of genetic diversity among P. litoralis populations. Both single and multi-locus species delimitation analyses yielded several molecular operational taxonomic units. Therefore, due to the homogeneity of morphological characteristics, it is likely that the morphospecies P. litoralis is a complex of four or more cryptic species, suggesting that more sampling is required and that the population structure genetic data and gene flow need to be investigated.
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Affiliation(s)
- Teerapong Seesamut
- Department of Biology, Faculty of Science, Rangsit University, Pathumthani, 12000, Thailand
| | - Yuichi Oba
- Department of Environmental Biology, Chubu University, Kasugai, 487-8501, Japan
| | - Parin Jirapatrasilp
- Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Svante Martinsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, 405 30, Göteborg, Sweden
| | - Maria Lindström
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, 405 30, Göteborg, Sweden
| | - Christer Erséus
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, 405 30, Göteborg, Sweden.
| | - Somsak Panha
- Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
- Academy of Science, The Royal Society of Thailand, Bangkok, 10300, Thailand.
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Ohira A, Nakamori T, Matsumoto S, Bessho-Uehara M, Kato T, Oba Y. Contribution to the taxonomy of Lobellini (Collembola: Neanurinae) and investigations on luminous Collembola from Japan. Zootaxa 2023; 5325:63-89. [PMID: 38220925 DOI: 10.11646/zootaxa.5325.1.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Indexed: 01/16/2024]
Abstract
Lobella sauteri was redescribed based on the lectotype and specimens obtained from the type locality Bugenji, Yokohama, Kanagawa, as the true identity of the luminous Collembola, Lobella sp. Lobella sauteri has morphological traits characteristic of the genus currently called Telobella. As L. sauteri is the type species of Lobella, the genus Telobella was synonymised with Lobella according to the principle of priority, and the genus Lobella was redefined to include both the species previously assigned to Telobella and those previously assigned to Lobella. A new species Lobella monstrum sp. nov. was described and new combinations were proposed for certain species in Lobellini. Light-emitting capacity was confirmed in L. sauteri and newly reported in Lobella yambaru comb. nov. Vitronura giselae and Vitronura kunigamiensis.
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Affiliation(s)
- Atsuko Ohira
- Tamarokuto Science Center; 5-10-64 Shibakubocho; Nishi-tokyo; Tokyo 188-0014; Japan.
| | - Taizo Nakamori
- Graduate School of Environmental and Information Sciences; Yokohama National University; 79-7 Tokiwadai; Hodogaya; Yokohama; Kanagawa 240-8501; Japan.
| | - Sachi Matsumoto
- Graduate School of Environmental and Information Sciences; Yokohama National University; 79-7 Tokiwadai; Hodogaya; Yokohama; Kanagawa 240-8501; Japan.
| | - Manabu Bessho-Uehara
- Institute for Advanced Research; Nagoya University; Furo; Chikusa; Nagoya; Aichi 464-8601; Japan; Graduate School of Science; Nagoya University; Furo; Chikusa; Nagoya; Aichi 464-8601; Japan.
| | - Takumi Kato
- Graduate School of Science; Nagoya University; Furo; Chikusa; Nagoya; Aichi 464-8601; Japan.
| | - Yuichi Oba
- Department of Environmental Biology; Chubu University; Matsumoto; Kasugai; Aichi 487-8501; Japan.
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Seesamut T, Ng B, Sutcharit C, Chanabun R, Panha S. Responses to salinity in the littoral earthworm genus Pontodrilus. Sci Rep 2022; 12:22304. [PMID: 36566279 PMCID: PMC9789941 DOI: 10.1038/s41598-022-26099-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 12/09/2022] [Indexed: 12/25/2022] Open
Abstract
The cosmopolitan littoral earthworm Pontodrilus litoralis is distributed in tropical and sub-tropical coastal habitats, whereas P. longissimus is reported only in the Thai-Malay coastal line. In the present study, we examined the difference in salinity effect on the survival rate, wet weight (hereafter weight) change, behaviour, and osmolality of these two Pontodrilus species. A 28 d exposure to varying salinity concentration (0-50 ppt) revealed that P. litoralis is able to survive over a wide salinity range than P. longissimus, with the latter species exhibiting a low survival rate over the same salinity range. During short-term exposure (0-96 h) to a salinity of less than 30 ppt, P. litoralis exhibited weight gain and this was significant in the first 12 h of exposure. However, P. longissimus gained weight when exposed to salinity at under 10 ppt in the first 72 h of exposure. The two species of Pontodrilus behaved differently when exposed to different salinities. The coelomic fluid osmolarity of Pontodrilus was related to the exposure medium and was mostly maintained as hyperosmotic to the external medium over the range of salinities tested. This study shows how two different species of the littoral earthworm genus Pontodrilus respond to a change in salinity, which may explain their dispersal pattern and shape their distribution pattern throughout Southeast Asia.
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Affiliation(s)
- Teerapong Seesamut
- grid.7922.e0000 0001 0244 7875Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330 Thailand
| | - Beewah Ng
- grid.7922.e0000 0001 0244 7875Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330 Thailand ,Freecap Resource Sdn Bhd, Lot T-5, Lumut Port Industrial Park, KG Acheh Mukim Lumut, 32000 Sitiawan, Perak Malaysia
| | - Chirasak Sutcharit
- grid.7922.e0000 0001 0244 7875Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330 Thailand
| | - Ratmanee Chanabun
- grid.444149.80000 0001 0370 0609Program in Animal Science, Faculty of Agricultural Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon, 47000 Thailand
| | - Somsak Panha
- grid.7922.e0000 0001 0244 7875Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330 Thailand ,grid.512985.2Academy of Science, The Royal Society of Thailand, Bangkok, 10300 Thailand
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