1
|
Wang C, Li J, Li S, Lin S. Effects and mechanisms of glyphosate as phosphorus nutrient on element stoichiometry and metabolism in the diatom Phaeodactylum tricornutum. Appl Environ Microbiol 2024; 90:e0213123. [PMID: 38265214 PMCID: PMC10880665 DOI: 10.1128/aem.02131-23] [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: 11/26/2023] [Accepted: 12/24/2023] [Indexed: 01/25/2024] Open
Abstract
The ability to utilize dissolved organic phosphorus (DOP) gives phytoplankton competitive advantages in P-limited environments. Our previous research indicates that the diatom Phaeodactylum tricornutum could grow on glyphosate, a DOP with carbon-phosphorus (C-P) bond and an herbicide, as sole P source. However, direct evidence and mechanism of glyphosate utilization are still lacking. In this study, using physiological and isotopic analysis, combined with transcriptomic profiling, we demonstrated the uptake of glyphosate by P. tricornutum and revealed the candidate responsible genes. Our data showed a low efficiency of glyphosate utilization by P. tricornutum, suggesting that glyphosate utilization costs energy and that the alga possessed an herbicide-resistant type of 5-enolpyruvylshikimate-3-phosphate (EPSP) synthase. Compared to the P-limited cultures, the glyphosate-grown P. tricornutum cells up-regulated genes involved in DNA replication, cell growth, transcription, translation, carbon metabolism, and many genes encoding antioxidants. Additionally, cellular C and silicon (Si) increased remarkably while cellular nitrogen (N) declined in the glyphosate-grown P. tricornutum, leading to higher Si:C and Si:N ratios, which corresponded to the up-regulation of genes involved in the C metabolism and Si uptake and the down-regulation of those encoding N uptake. This has the potential to enhance C and Si export to the deep sea when P is limited but phosphonate is available. In sum, our study documented how P. tricornutum could utilize the herbicide glyphosate as P nutrient and how glyphosate utilization may affect the element content and stoichiometry in this diatom, which have important ecological implications in the future ocean.IMPORTANCEGlyphosate is the most widely used herbicide in the world and could be utilized as phosphorus (P) source by some bacteria. Our study first revealed that glyphosate could be transported into Phaeodactylum tricornutum cells for utilization and identified putative genes responsible for glyphosate uptake. This uncovers an alternative strategy of phytoplankton to cope with P deficiency considering phosphonate accounts for about 25% of the total dissolved organic phosphorus (DOP) in the ocean. Additionally, accumulation of carbon (C) and silicon (Si), as well as elevation of Si:C ratio in P. tricornutum cells when grown on glyphosate indicates glyphosate as the source of P nutrient has the potential to result in more C and Si export into the deep ocean. This, along with the differential ability to utilize glyphosate among different species, glyphosate supply in dissolved inorganic phosphorus (DIP)-depleted ecosystems may cause changes in phytoplankton community structure. These insights have implications in evaluating the effects of human activities (use of Roundup) and climate change (potentially reducing DIP supply in sunlit layer) on phytoplankton in the future ocean.
Collapse
Affiliation(s)
- Cong Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, Fujian, China
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Jiashun Li
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Sihan Li
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Senjie Lin
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, Fujian, China
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
- Department of Marine Sciences, University of Connecticut, Groton, Connecticut, USA
| |
Collapse
|
2
|
Li J, Wu S, Zhang K, Sun X, Lin W, Wang C, Lin S. Clustered Regularly Interspaced Short Palindromic Repeat/CRISPR-Associated Protein and Its Utility All at Sea: Status, Challenges, and Prospects. Microorganisms 2024; 12:118. [PMID: 38257946 PMCID: PMC10820777 DOI: 10.3390/microorganisms12010118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
Initially discovered over 35 years ago in the bacterium Escherichia coli as a defense system against invasion of viral (or other exogenous) DNA into the genome, CRISPR/Cas has ushered in a new era of functional genetics and served as a versatile genetic tool in all branches of life science. CRISPR/Cas has revolutionized the methodology of gene knockout with simplicity and rapidity, but it is also powerful for gene knock-in and gene modification. In the field of marine biology and ecology, this tool has been instrumental in the functional characterization of 'dark' genes and the documentation of the functional differentiation of gene paralogs. Powerful as it is, challenges exist that have hindered the advances in functional genetics in some important lineages. This review examines the status of applications of CRISPR/Cas in marine research and assesses the prospect of quickly expanding the deployment of this powerful tool to address the myriad fundamental marine biology and biological oceanography questions.
Collapse
Affiliation(s)
- Jiashun Li
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, China
| | - Shuaishuai Wu
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, China
| | - Kaidian Zhang
- State Key Laboratory of Marine Resource Utilization in the South China Sea, School of Marine Biology and Fisheries, Hainan University, Haikou 570203, China
| | - Xueqiong Sun
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, China
| | - Wenwen Lin
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, China
| | - Cong Wang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, China
| | - Senjie Lin
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, China
- Department of Marine Sciences, University of Connecticut, Groton, CT 06340, USA
| |
Collapse
|
3
|
Dai H, Yang J, Teng L, Wang Z, Liang T, Khan WA, Yang R, Qiao B, Zhang Y, Yang C. Mechanistic basis for mitigating drought tolerance by selenium application in tobacco ( Nicotiana tabacum L.): a multi-omics approach. FRONTIERS IN PLANT SCIENCE 2023; 14:1255682. [PMID: 37799555 PMCID: PMC10548829 DOI: 10.3389/fpls.2023.1255682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 09/04/2023] [Indexed: 10/07/2023]
Abstract
The lack of irrigation water in agricultural soils poses a significant constraint on global crop production. In-depth investigation into microRNAs (miRNAs) has been widely used to achieve a comprehensive understanding of plant defense mechanisms. However, there is limited knowledge on the association of miRNAs with drought tolerance in cigar tobacco. In this study, a hydroponic experiment was carried out to identify changes in plant physiological characteristics, miRNA expression and metabolite profile under drought stress, and examine the mitigating effects of selenium (Se) application. The shoot dry weight of drought-stressed plants was approximately half (50.3%) of that in non-stressed (control) conditions. However, plants supplied with Se attained 38.8% greater shoot dry weight as compared to plants with no Se supply under drought stress. Thirteen miRNAs were identified to be associated with drought tolerance. These included 7 known (such as nta-miR156b and nta-miR166a) and 6 novel miRNAs (such as novel-nta-miR156-5p and novel-nta-miR209-5p) with the target genes of squamosa promoter-binding-like protein 4 (SPL4), serine/threonine protein phosphatase 2A (PPP2A), cation/calcium exchanger 4-like (CCX4), extensin-1-like (EXT1) and reduced wall acetylation 2 (RWA2). Further investigation revealed that the expression levels of Ext1 and RWA2 were significantly decreased under drought stress but increased with Se addition. Moreover, key metabolites such as catechin and N-acetylneuraminic acid were identified, which may play a role in the regulation of drought tolerance. The integrated analysis of miRNA sequencing and metabolome highlighted the significance of the novel-nta-miR97-5p- LRR-RLK- catechin pathway in regulating drought tolerance. Our findings provide valuable insights into the molecular mechanisms underlying drought tolerance and Se-induced stress alleviation in cigar tobacco.
Collapse
Affiliation(s)
- Huaxin Dai
- Department of Tobacco Agriculture, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Jinpeng Yang
- Department of Research Center on Tobacco Cultivating and Curing, Tobacco Research Institute of Hubei, Wuhan, China
| | - Lidong Teng
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Zhong Wang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Taibo Liang
- Department of Tobacco Agriculture, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Waleed Amjad Khan
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, Australia
| | - Ruiwei Yang
- Department of Research Center on Tobacco Cultivating and Curing, Tobacco Research Institute of Hubei, Wuhan, China
| | - Baoming Qiao
- Department of Research Center on Tobacco Cultivating and Curing, Tobacco Research Institute of Hubei, Wuhan, China
| | - Yanling Zhang
- Department of Tobacco Agriculture, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Chunlei Yang
- Department of Research Center on Tobacco Cultivating and Curing, Tobacco Research Institute of Hubei, Wuhan, China
| |
Collapse
|
4
|
Li J, Zhang K, Li L, Wang Y, Wang C, Lin S. Two-sided effects of the organic phosphorus phytate on a globally important marine coccolithophorid phytoplankton. Microbiol Spectr 2023; 11:e0125523. [PMID: 37702480 PMCID: PMC10655706 DOI: 10.1128/spectrum.01255-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/05/2023] [Indexed: 09/14/2023] Open
Abstract
Dissolved organic phosphorus (DOP) is a potential source of aquatic eutrophication and pollution because it can potentially stimulate growth in some species and inhibit growth in other species of algae, the foundation of the marine ecosystem. Inositol hexaphosphate (also named phytic acid or PA), an abundant organophosphate, is presumably ubiquitous in the marine environment, but how it affects marine primary producers is poorly understood. Here, we investigated the bioavailability of this DOP to the cosmopolitan coccolithophore Emiliania huxleyi. Our results showed that E. huxleyi cells can take up PA and dissolved inorganic phosphorus (DIP) simultaneously. Absorbed PA can efficiently support algal growth, producing cell yield between DIP and phosphorus (P)-depleted conditions. Accordingly, PA supply as the sole P source highly influences cellular metabolism and nutrient stoichiometry. Particularly, PA-grown cultures exhibited enhanced carbon fixation, increased lipid content, activated energy metabolism, and induced nitrogen assimilation. However, our data suggest that PA may also exert some levels of toxic effects on E. huxleyi. This study provides novel insights into the variable effects of a DOP on marine phytoplankton, which will inform new inquiries about how the complex DOP constituencies in the ocean will shape phytoplankton community structure and function. IMPORTANCE The dissolved organic phosphorus (DOP) utilization in phytoplankton plays vital roles in cellular P homeostasis, P-nutrient niche, and the dynamics of community structure in marine ecosystems, but its mechanisms, potentially varying with species, are far from clear. In this study, we investigated the utilization of a widespread DOP species, which is commonly produced by plants (land plants and marine macrophytes) and released into coastal areas, in a globally distributed bloom-forming coccolithophore species in various phosphorus environments. Using a combination of physiological and transcriptomic measurements and analyses, our experimental results revealed the complex mechanism and two-sided effects of DOP (major algal growth-supporting and minor toxic effects) in this species, providing a novel perspective on phytoplankton nutrient regulation.
Collapse
Affiliation(s)
- Jiashun Li
- Xiamen Key Laboratory of Urban Sea Ecological Conservation and Restoration, State Key Laboratory of Marine Environmental Science, and College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Kaidian Zhang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, Hainan, China
| | - Ling Li
- Xiamen Key Laboratory of Urban Sea Ecological Conservation and Restoration, State Key Laboratory of Marine Environmental Science, and College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Yujie Wang
- Xiamen Key Laboratory of Urban Sea Ecological Conservation and Restoration, State Key Laboratory of Marine Environmental Science, and College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Cong Wang
- Xiamen Key Laboratory of Urban Sea Ecological Conservation and Restoration, State Key Laboratory of Marine Environmental Science, and College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Senjie Lin
- Xiamen Key Laboratory of Urban Sea Ecological Conservation and Restoration, State Key Laboratory of Marine Environmental Science, and College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory of Marine Science and Technology, Qingdao, Shandong, China
- Department of Marine Sciences, University of Connecticut, Groton, Connecticut, USA
| |
Collapse
|
5
|
Kalinina V, Berdieva M, Aksenov N, Skarlato S. Phosphorus deficiency induces sexual reproduction in the dinoflagellate Prorocentrum cordatum. Sci Rep 2023; 13:14191. [PMID: 37648777 PMCID: PMC10468533 DOI: 10.1038/s41598-023-41339-3] [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: 06/16/2023] [Accepted: 08/24/2023] [Indexed: 09/01/2023] Open
Abstract
Nitrogen (N) and phosphorus (P) are essential elements whose availability promotes successful growth of phytoplankton and governs aquatic primary productivity. In this study, we investigated the effect of N and/or P deficiency on the sexual reproduction of Prorocentrum cordatum, the dinoflagellate with the haplontic life cycle which causes harmful algal blooms worldwide. In P. cordatum cultures, N and the combined N and P deficiency led to the arrest of the cell cycle in the G0/G1 phases and attenuation of cell culture growth. We observed, that P, but not N deficiency triggered the transition in the life cycle of P. cordatum from vegetative to the sexual stage. This resulted in a sharp increase in percentage of cells with relative nuclear DNA content 2C (zygotes) and the appearance of cells with relative nuclear DNA content 4C (dividing zygotes). Subsequent supplementation with phosphate stimulated meiosis and led to a noticeable increase in the 4C cell number (dividing zygotes). Additionally, we performed transcriptomic data analysis and identified putative phosphate transporters and enzymes involved in the phosphate uptake and regulation of its metabolism by P. cordatum. These include high- and low-affinity inorganic phosphate transporters, atypical alkaline phosphatase, purple acid phosphatases and SPX domain-containing proteins.
Collapse
Affiliation(s)
- Vera Kalinina
- Laboratory of Cytology of Unicellular Organisms, Institute of Cytology of the Russian Academy of Sciences, St.-Petersburg, 194064, Russia.
| | - Mariia Berdieva
- Laboratory of Cytology of Unicellular Organisms, Institute of Cytology of the Russian Academy of Sciences, St.-Petersburg, 194064, Russia
| | - Nikolay Aksenov
- Laboratory of Intracellular Membrane Dynamics, Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, 194064, Russia
| | - Sergei Skarlato
- Laboratory of Cytology of Unicellular Organisms, Institute of Cytology of the Russian Academy of Sciences, St.-Petersburg, 194064, Russia
| |
Collapse
|
6
|
Helliwell KE. Emerging trends in nitrogen and phosphorus signalling in photosynthetic eukaryotes. TRENDS IN PLANT SCIENCE 2023; 28:344-358. [PMID: 36372648 DOI: 10.1016/j.tplants.2022.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/12/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Phosphorus (P) and nitrogen (N) are the major nutrients that constrain plant and algal growth in nature. Recent advances in understanding nutrient signalling mechanisms of these organisms have revealed molecular attributes to optimise N and P acquisition. This has illuminated the importance of interplay between N and P regulatory networks, highlighting a need to study synergistic interactions rather than single-nutrient effects. Emerging insights of nutrient signalling in polyphyletic model plants and algae hint that, although core P-starvation signalling components are conserved, distinct mechanisms for P (and N) sensing have arisen. Here, the N and P signalling mechanisms of diverse photosynthetic eukaryotes are examined, drawing parallels and differences between taxa. Future directions to understand their molecular basis, evolution, and ecology are proposed.
Collapse
Affiliation(s)
- Katherine E Helliwell
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter EX4 4QD, UK; Marine Biological Association, Citadel Hill, Plymouth PL1 2PB, UK.
| |
Collapse
|
7
|
Brownlee C, Helliwell KE, Meeda Y, McLachlan D, Murphy EA, Wheeler GL. Regulation and integration of membrane transport in marine diatoms. Semin Cell Dev Biol 2023; 134:79-89. [PMID: 35305902 DOI: 10.1016/j.semcdb.2022.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 02/18/2022] [Accepted: 03/04/2022] [Indexed: 12/27/2022]
Abstract
Diatoms represent one of the most successful groups of marine phytoplankton and are major contributors to ocean biogeochemical cycling. They have colonized marine, freshwater and ice environments and inhabit all regions of the World's oceans, from poles to tropics. Their success is underpinned by a remarkable ability to regulate their growth and metabolism during nutrient limitation and to respond rapidly when nutrients are available. This requires precise regulation of membrane transport and nutrient acquisition mechanisms, integration of nutrient sensing mechanisms and coordination of different transport pathways. This review outlines transport mechanisms involved in acquisition of key nutrients (N, C, P, Si, Fe) by marine diatoms, illustrating their complexity, sophistication and multiple levels of control.
Collapse
Affiliation(s)
- Colin Brownlee
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK; School of Ocean and Earth Sciences, University of Southampton, Southampton SO14 3ZH, UK
| | - Katherine E Helliwell
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK; Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter EX4 4QD, UK
| | - Yasmin Meeda
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - Deirdre McLachlan
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK; School of Biological Sciences, University of Bristol, Bristol BS8 1TQ, UK
| | - Eleanor A Murphy
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| | - Glen L Wheeler
- Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK
| |
Collapse
|
8
|
Li J, Zhang K, Li L, Wang Y, Lin S. Unsuspected functions of alkaline phosphatase PhoD in the diatom Phaeodactylum tricornutum. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
9
|
Liu J, Yin W, Zhang X, Xie X, Dong G, Lu Y, Tao B, Gong Q, Chen X, Shi C, Qin Y, Zeng R, Li D, Li H, Zhao C, Zhang H. RNA-seq analysis reveals genes related to photosynthetic carbon partitioning and lipid production in Phaeodactylum tricornutum under alkaline conditions. Front Microbiol 2022; 13:969639. [PMID: 36051763 PMCID: PMC9425035 DOI: 10.3389/fmicb.2022.969639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 07/19/2022] [Indexed: 11/13/2022] Open
Abstract
Alkaline pH can induce triacylglyceride accumulation in microalgae, however its molecular mechanism remains elusive. Here, we investigated the effect of 2-[N-cyclohexylamino]-ethane-sulfonic acid (CHES) -induced intracellular alkalization on the lipid production in Phaeodactylum tricornutum. Intracellular pH was increased upon CHES treatment, displaying a high BCECF fluorescence ratio. CHES treatment significantly induced lipid accumulation but had no change in cell density and biomass. The expression of genes involved in photoreaction, carbon fixation, glycolysis, pentose phosphate pathway, amino acid catabolism, GS/GOGAT cycle, TCA cycle, triacylglyceride assembly, de novo fatty acid synthesis were up-regulated, while that in amino acid biosynthesis were down-regulated under CHES conditions. Correspondingly, the activity of phosphoribulokinase, carbonic anhydrase, pyruvate dehydrogenase and acetaldehyde dehydrogenase were enhanced by CHES treatment. Chloroplast-specific biological processes were activated by CHES treatment in P. tricornutum, which redirects the flux of carbon into lipid biosynthesis, meanwhile stimulates de novo fatty acid biosynthesis, leading to lipid accumulation under CHES conditions. These indicate an enhancement of intermediate metabolism, resulting in lipid accumulation by CHES.
Collapse
Affiliation(s)
- Jian Liu
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Weihua Yin
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xinya Zhang
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xuan Xie
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Guanghui Dong
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yao Lu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Baoxiang Tao
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Qiangbin Gong
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xinyan Chen
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Chao Shi
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yuan Qin
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- Pingtan Science and Technology Research Institute of Fujian Agriculture and Forestry University, Fuzhou, China
| | - Rensen Zeng
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Dawei Li
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Hongye Li
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Chao Zhao
- College of Marine Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Huiying Zhang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- *Correspondence: Huiying Zhang,
| |
Collapse
|
10
|
You Y, Sun X, Ma M, He J, Li L, Porto FW, Lin S. Trypsin is a coordinate regulator of N and P nutrients in marine phytoplankton. Nat Commun 2022; 13:4022. [PMID: 35821503 PMCID: PMC9276738 DOI: 10.1038/s41467-022-31802-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 07/05/2022] [Indexed: 11/30/2022] Open
Abstract
Trypsin is best known as a digestive enzyme in animals, but remains unexplored in phytoplankton, the major primary producers in the ocean. Here we report the prevalence of trypsin genes in global ocean phytoplankton and significant influences of environmental nitrogen (N) and phosphorus (P) on their expression. Using CRISPR/Cas9 mediated-knockout and overexpression analyses, we further reveal that a trypsin in Phaeodactylum tricornutum (PtTryp2) functions to repress N acquisition, but its expression decreases under N-deficiency to promote N acquisition. On the contrary, PtTryp2 promotes phosphate uptake per se, and its expression increases under P-deficiency to further reinforce P acquisition. Furthermore, PtTryp2 knockout led to amplitude magnification of the nitrate and phosphate uptake ‘seesaw’, whereas PtTryp2 overexpression dampened it, linking PtTryp2 to stabilizing N:P stoichiometry. Our data demonstrate that PtTryp2 is a coordinate regulator of N:P stoichiometric homeostasis. The study opens a window for deciphering how phytoplankton adapt to nutrient-variable marine environments. Using CRISPR-Cas9 mediated-knockout and overexpression analyses, this study shows that a trypsin in the diatom Phaeodactylum tricornutum promotes phosphorus uptake and inhibits nitrogen uptake but its expression is downregulated under nitrogen stress and upregulated under phosphorus stress. Together, the findings suggest this trypsin is a coordinate regulator of nutrient homeostasis.
Collapse
Affiliation(s)
- Yanchun You
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, 361102, China
| | - Xueqiong Sun
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, 361102, China
| | - Minglei Ma
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, 361102, China
| | - Jiamin He
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, 361102, China
| | - Ling Li
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, 361102, China
| | - Felipe Wendt Porto
- Department of Marine Sciences, University of Connecticut, Groton, CT, 06340, USA
| | - Senjie Lin
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, 361102, China. .,Department of Marine Sciences, University of Connecticut, Groton, CT, 06340, USA.
| |
Collapse
|
11
|
Satheesh V, Tahir A, Li J, Lei M. Plant phosphate nutrition: sensing the stress. STRESS BIOLOGY 2022; 2:16. [PMID: 37676547 PMCID: PMC10441931 DOI: 10.1007/s44154-022-00039-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 01/31/2022] [Indexed: 09/08/2023]
Abstract
Phosphorus (P) is obtained by plants as phosphate (Pi) from the soil and low Pi levels affects plant growth and development. Adaptation to low Pi condition entails sensing internal and external Pi levels and translating those signals to molecular and morphophysiological changes in the plant. In this review, we present findings related to local and systemin Pi sensing with focus the molecular mechanisms behind root system architectural changes and the impact of hormones and epigenetic mechanisms affecting those changes. We also present some of the recent advances in the Pi sensing and signaling mechanisms focusing on inositol pyrophosphate InsP8 and its interaction with SPX domain proteins to regulate the activity of the central regulator of the Pi starvation response, PHR.
Collapse
Affiliation(s)
- Viswanathan Satheesh
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
| | - Ayesha Tahir
- Department of Biosciences, COMSATS University Islamabad, Park Road, Islamabad, Pakistan
| | - Jinkai Li
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Mingguang Lei
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 201602 China
| |
Collapse
|
12
|
Zhang K, Shen Z, Yang W, Guo J, Yan Z, Li J, Lin J, Cao X, Tang J, Liu Z, Zhou Z, Lin S. Unraveling the metabolic effects of benzophenone-3 on the endosymbiotic dinoflagellate Cladocopium goreaui. Front Microbiol 2022; 13:1116975. [PMID: 36938131 PMCID: PMC10016356 DOI: 10.3389/fmicb.2022.1116975] [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: 12/06/2022] [Accepted: 12/28/2022] [Indexed: 03/05/2023] Open
Abstract
As a well-known pseudo-persistent environmental pollutant, oxybenzone (BP-3) and its related organic ultraviolet (UV) filters have been verified to directly contribute to the increasing mortality rate of coral reefs. Previous studies have revealed the potential role of symbiotic Symbiodiniaceae in protecting corals from the toxic effects of UV filters. However, the detailed protection mechanism(s) have not been explained. Here, the impacts of BP-3 on the symbiotic Symbiodiniaceae Cladocopium goreaui were explored. C. goreaui cells exhibited distinct cell growth at different BP-3 doses, with increasing growth at the lower concentration (2 mg L-1) and rapid death at a higher concentration (20 mg L-1). Furthermore, C. goreaui cells showed a significant BP-3 uptake at the lower BP-3 concentration. BP-3 absorbing cells exhibited elevated photosynthetic efficiency, and decreased cellular carbon and nitrogen contents. Besides, the derivatives of BP-3 and aromatic amino acid metabolism highly responded to BP-3 absorption and biodegradation. Our physiological and metabolic results reveal that the symbiotic Symbiodiniaceae could resist the toxicity of a range of BP-3 through promoting cell division, photosynthesis, and reprogramming amino acid metabolism. This study provides novel insights into the influences of organic UV filters to coral reef ecosystems, which urgently needs increasing attention and management.
Collapse
Affiliation(s)
- Kaidian Zhang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
| | - Zhen Shen
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
| | - Weilu Yang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
| | - Jianing Guo
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
| | - Zhicong Yan
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
| | - Jiashun Li
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
| | - Jiamin Lin
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
| | - Xiaocong Cao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
| | - Jia Tang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
| | - Zhaoqun Liu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
| | - Zhi Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
- *Correspondence: Zhi Zhou,
| | - Senjie Lin
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China
- Key Laboratory of Tropical Hydrobiology and Biotechnology of Hainan, Hainan University, Haikou, China
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, China
- Department of Marine Sciences, University of Connecticut, Groton, CT, United States
| |
Collapse
|
13
|
Phytate as a phosphorus nutrient with impacts on iron stress-related gene expression for phytoplankton: insights from diatom Phaeodactylum tricornutum. Appl Environ Microbiol 2021; 88:e0209721. [PMID: 34757820 DOI: 10.1128/aem.02097-21] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Phytoplankton have evolved a capability to acquire phosphorus (P) from dissolved organic phosphorus (DOP) since the preferred form, dissolved inorganic phosphate (DIP, or Pi), is often limited in parts of the ocean. Phytic acid (PA) is abundantly synthesized in plants and rich in excreta of animals, potentially enriching the DOP pool in coastal oceans. However, whether and how PA may be used by phytoplankton are poorly understood. Here, we investigated PA utilization and underlying metabolic pathways in the diatom model Phaeodactylum tricornutum. The physiological results showed that P. tricornutum could utilize PA as a sole source of P nutrient to support growth. Meanwhile, the replacement of PA for DIP also caused changes in multiple cellular processes such as inositol phosphate metabolism, photosynthesis, and signal transduction. These results suggest that PA is bioavailable to P. tricornutum and can directly participate the metabolic pathways of PA-grown cells. However, our data showed that the utilization of PA was markedly less efficient than that of DIP, and PA-grown cells exhibited P and iron (Fe) nutrient stress signals. Implicated in these findings is the potential of complicated responses of phytoplankton to an ambient DOP species, which calls for more systematic investigation. IMPORTANCE PA is abundant in plants, and cannot be digested by non-ruminant animals. Hence, it is potentially a significant component of the DOP pool in the coastal waters. Despite the potential importance, there is little information about its bioavailability to phytoplankton as a source of P nutrient and if so what molecular mechanisms are involved. In this study, we found that part of PA could be utilized by the diatom P. tricornutum to support growth, and another portion of PA can act as a substrate directly participating in various metabolism pathways and cellular processes. However, our physiological and transcriptomic data show that PA-grown cells still exhibited signs of P stress and potential Fe stress. These results have significant implications in phytoplankton P nutrient ecology and provide a novel insight into multi-faceted impacts of DOP utilization on phytoplankton nutrition and metabolism.
Collapse
|