Formation of resting cells is accompanied with enrichment of ferritin in marine diatom Phaeodactylum tricornutum
The formation of resting cells/spores in marine diatoms helps them to survive in environmental changes, whose sedimentation characteristics also drive enhanced carbon fluxes export to the deep ocean. However, the molecular mechanism underlying the transformation remains unclear. Based on the upregul...
Published in: | Algal Research |
---|---|
Main Authors: | , , , , , , , , |
Format: | Report |
Language: | English |
Published: |
ELSEVIER
2022
|
Subjects: | |
Online Access: | http://ir.qdio.ac.cn/handle/337002/177538 https://doi.org/10.1016/j.algal.2021.102567 |
id |
ftchinacasciocas:oai:ir.qdio.ac.cn:337002/177538 |
---|---|
record_format |
openpolar |
spelling |
ftchinacasciocas:oai:ir.qdio.ac.cn:337002/177538 2023-05-15T18:25:46+02:00 Formation of resting cells is accompanied with enrichment of ferritin in marine diatom Phaeodactylum tricornutum Liu, Xuehua Wang, Lijun Wu, Songcui Zhou, Lu Gao, Shan Xie, Xiujun Wang, Lepu Gu, Wenhui Wang, Guangce 2022 http://ir.qdio.ac.cn/handle/337002/177538 https://doi.org/10.1016/j.algal.2021.102567 英语 eng ELSEVIER ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS http://ir.qdio.ac.cn/handle/337002/177538 doi:10.1016/j.algal.2021.102567 Ferritin Morphological change Oval Abscisic acid Dormancy Biotechnology & Applied Microbiology SOUTHERN-OCEAN PLANKTONIC DIATOMS GENE-EXPRESSION ABSCISIC-ACID IRON CARBON BACILLARIOPHYCEAE PROTEINS NITRATE STRESS 期刊论文 2022 ftchinacasciocas https://doi.org/10.1016/j.algal.2021.102567 2022-06-27T05:46:36Z The formation of resting cells/spores in marine diatoms helps them to survive in environmental changes, whose sedimentation characteristics also drive enhanced carbon fluxes export to the deep ocean. However, the molecular mechanism underlying the transformation remains unclear. Based on the upregulation of ferritin during dormancy in microorganism and its' crucial role in coping with environmental stress, we constructed the ferritin overexpression and silence strains in model marine diatom, Phaeodactylum tricornutum (FTN-OE and FTN-Si, respectively). The morphological transformation from fusiform to ovoid were observed among the FTN-OE strains but not the wide type and FTN-Si strains. These FTN-OE oval cells exhibited typical characteristics of resting cells and benthic adaptation, such as lower growth rates, low-light adaptation, silicified valves, the excretion of exopolymeric substances, upregulation of stress-resistant proteins and increased nitrate reserves. Furthermore, FTN-OE oval cells showed increased abscisic acid synthesis and signaling pathways in the transcriptome and proteome. And the abscisic acid signal was detected in FTN-OE oval cells exclusively (2.96 ng g(-1) FW), but absent in the FTN-Si, FTN-OE fusiform or WT cells. Overall, our results demonstrate that ferritin overexpression in marine diatom have a close relationship with morphological transformation from fusiform to ovoid morphotype, after which they enter a resting stage, which is accompanied by abscisic acid accumulation. This improves our understanding of the molecular processes in diatom resting cells/spores' formation and suggests that ferritin accumulation might improve the sequestration of photosynthetically fixed atmospheric CO2 into the deep sea. Report Southern Ocean Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Southern Ocean Algal Research 61 102567 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Ferritin Morphological change Oval Abscisic acid Dormancy Biotechnology & Applied Microbiology SOUTHERN-OCEAN PLANKTONIC DIATOMS GENE-EXPRESSION ABSCISIC-ACID IRON CARBON BACILLARIOPHYCEAE PROTEINS NITRATE STRESS |
spellingShingle |
Ferritin Morphological change Oval Abscisic acid Dormancy Biotechnology & Applied Microbiology SOUTHERN-OCEAN PLANKTONIC DIATOMS GENE-EXPRESSION ABSCISIC-ACID IRON CARBON BACILLARIOPHYCEAE PROTEINS NITRATE STRESS Liu, Xuehua Wang, Lijun Wu, Songcui Zhou, Lu Gao, Shan Xie, Xiujun Wang, Lepu Gu, Wenhui Wang, Guangce Formation of resting cells is accompanied with enrichment of ferritin in marine diatom Phaeodactylum tricornutum |
topic_facet |
Ferritin Morphological change Oval Abscisic acid Dormancy Biotechnology & Applied Microbiology SOUTHERN-OCEAN PLANKTONIC DIATOMS GENE-EXPRESSION ABSCISIC-ACID IRON CARBON BACILLARIOPHYCEAE PROTEINS NITRATE STRESS |
description |
The formation of resting cells/spores in marine diatoms helps them to survive in environmental changes, whose sedimentation characteristics also drive enhanced carbon fluxes export to the deep ocean. However, the molecular mechanism underlying the transformation remains unclear. Based on the upregulation of ferritin during dormancy in microorganism and its' crucial role in coping with environmental stress, we constructed the ferritin overexpression and silence strains in model marine diatom, Phaeodactylum tricornutum (FTN-OE and FTN-Si, respectively). The morphological transformation from fusiform to ovoid were observed among the FTN-OE strains but not the wide type and FTN-Si strains. These FTN-OE oval cells exhibited typical characteristics of resting cells and benthic adaptation, such as lower growth rates, low-light adaptation, silicified valves, the excretion of exopolymeric substances, upregulation of stress-resistant proteins and increased nitrate reserves. Furthermore, FTN-OE oval cells showed increased abscisic acid synthesis and signaling pathways in the transcriptome and proteome. And the abscisic acid signal was detected in FTN-OE oval cells exclusively (2.96 ng g(-1) FW), but absent in the FTN-Si, FTN-OE fusiform or WT cells. Overall, our results demonstrate that ferritin overexpression in marine diatom have a close relationship with morphological transformation from fusiform to ovoid morphotype, after which they enter a resting stage, which is accompanied by abscisic acid accumulation. This improves our understanding of the molecular processes in diatom resting cells/spores' formation and suggests that ferritin accumulation might improve the sequestration of photosynthetically fixed atmospheric CO2 into the deep sea. |
format |
Report |
author |
Liu, Xuehua Wang, Lijun Wu, Songcui Zhou, Lu Gao, Shan Xie, Xiujun Wang, Lepu Gu, Wenhui Wang, Guangce |
author_facet |
Liu, Xuehua Wang, Lijun Wu, Songcui Zhou, Lu Gao, Shan Xie, Xiujun Wang, Lepu Gu, Wenhui Wang, Guangce |
author_sort |
Liu, Xuehua |
title |
Formation of resting cells is accompanied with enrichment of ferritin in marine diatom Phaeodactylum tricornutum |
title_short |
Formation of resting cells is accompanied with enrichment of ferritin in marine diatom Phaeodactylum tricornutum |
title_full |
Formation of resting cells is accompanied with enrichment of ferritin in marine diatom Phaeodactylum tricornutum |
title_fullStr |
Formation of resting cells is accompanied with enrichment of ferritin in marine diatom Phaeodactylum tricornutum |
title_full_unstemmed |
Formation of resting cells is accompanied with enrichment of ferritin in marine diatom Phaeodactylum tricornutum |
title_sort |
formation of resting cells is accompanied with enrichment of ferritin in marine diatom phaeodactylum tricornutum |
publisher |
ELSEVIER |
publishDate |
2022 |
url |
http://ir.qdio.ac.cn/handle/337002/177538 https://doi.org/10.1016/j.algal.2021.102567 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS http://ir.qdio.ac.cn/handle/337002/177538 doi:10.1016/j.algal.2021.102567 |
op_doi |
https://doi.org/10.1016/j.algal.2021.102567 |
container_title |
Algal Research |
container_volume |
61 |
container_start_page |
102567 |
_version_ |
1766207429483167744 |