Journal of Applied Phycology最新文献

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Response of maize to seed priming with seaweed extracts and plant growth promoting rhizobacteria 玉米对海藻提取物和植物生长促进根瘤菌种子处理的反应
IF 3.3 3区 生物学
Journal of Applied Phycology Pub Date : 2024-07-05 DOI: 10.1007/s10811-024-03306-x
Grishma Gandhi, Vijay Anand K. Gopalakrishnan, Arup Ghosh
{"title":"Response of maize to seed priming with seaweed extracts and plant growth promoting rhizobacteria","authors":"Grishma Gandhi, Vijay Anand K. Gopalakrishnan, Arup Ghosh","doi":"10.1007/s10811-024-03306-x","DOIUrl":"https://doi.org/10.1007/s10811-024-03306-x","url":null,"abstract":"<p>Plant growth-promoting rhizobacteria (PGPR) and seaweed extracts (SWE) individually improve crop performances, but the response of crops upon their combined use is less understood. A field experiment on maize was carried out to evaluate the effect of seed priming with PGPR and undiluted SWE on the growth, yield, and nutritional quality of maize and soil properties. A split-plot design comprising 15 treatment combinations was laid out with SWE as the main factor (no SWE, <i>Kappaphycus alvarezii</i> and <i>Sargassum cinctum</i> extract, and PGPR as sub-plot factor (no PGPR, <i>Bacillus megaterium</i>, <i>B. subtilis</i>, <i>Paenibacillus polymyxa</i> and <i>Azotobacter chroococcum</i>). The composition and properties of SWE and PGPR were assessed. Without SWE, seed priming with all PGPR enhanced cob yield, the maximum improvement (32%) over no PGPR being recorded with <i>A. chroococcum</i> treatment. However, SWE priming along with PGPRs had no additional yield advantage compared to PGPR used alone. In the presence of either SWEs, <i>A. chroococcum</i> treatment was superior to other PGPR for most of the crop parameters like yield, carbohydrates and micro-nutrients in grains. The higher nutrient uptake agreed well with soil nutrient status after harvest. There were no deleterious effects on any parameters due to co-priming with <i>K. alvarezii</i> or <i>S. cinctum</i> extract with <i>A. chroococcum</i>, which was not the case with <i>B. subtilis</i> treatment where there was a significant decrease in growth and yield parameters despite evidence of increasing bacterial colony count. The study suggests the need for assessing optimal SWE doses for combinatorial PGPR treatments.</p>","PeriodicalId":15086,"journal":{"name":"Journal of Applied Phycology","volume":"47 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alleviating the water deficit stress effect on Zea mays L. using an extract of the seaweed Sargassum boveanum 利用海藻马尾藻提取物缓解对玉米的缺水胁迫效应
IF 3.3 3区 生物学
Journal of Applied Phycology Pub Date : 2024-07-05 DOI: 10.1007/s10811-024-03282-2
Farnaz Alasvandyari, Batool Mahdavi, Asghar Rahimi
{"title":"Alleviating the water deficit stress effect on Zea mays L. using an extract of the seaweed Sargassum boveanum","authors":"Farnaz Alasvandyari, Batool Mahdavi, Asghar Rahimi","doi":"10.1007/s10811-024-03282-2","DOIUrl":"https://doi.org/10.1007/s10811-024-03282-2","url":null,"abstract":"<p>In this study a liquid extract from the seaweed <i>Sargassum boveanum</i> (LE<sub>Sb</sub>) was prepared using four different methods and solvents. The optimal method, where the extract was prepared using microwave digestion, was selected, and its spray solution was applied to maize (SC704) plants at different concentrations (0.0%, 1.0%, 1.5%, 2.0%, and 2.5% LE<sub>Sb</sub> (<sub>V/</sub><sub>V</sub>)) and three irrigation levels: non-stress (80% of field capacity (FC), 60% FC, and 40% FC). Water stress (40% and 60% FC) limited plant growth by disrupting physiological and biochemical functions. However, the concentration of 1.5% LE<sub>Sb</sub> demonstrated a significant improvement in various traits compared to the 0.0% LE<sub>Sb</sub>. This improvement included an increase in shoot dry weight by 15.46%, 27.55%, and 57.52% under conditions of 80%, 60%, and 40% FC. Additionally, there was an increase in the activity of antioxidant enzymes, such as superoxide dismutase (SOD), by 13.27%, 30.42%, and 32.19% under conditions of 80%, 60%, and 40% FC, respectively, which could effectively reduce malondialdehyde (MDA) levels. At the concentration of 1.5% there was an increase in proline content by 20.07%, 19.50%, and 10.40% under conditions of 80%, 60%, and 40% FC, respectively, as well as an increase in soluble sugar content under conditions of 60% and 40% FC compared to 0.0% LE<sub>Sb</sub>. The relative water content (RWC) also improved with the 1.5% LE<sub>Sb</sub> under 60% and 40% FC conditions, by 29.23% and 25.97%, respectively, compared to 0.0% LE<sub>Sb</sub>. These results indicate that a concentration of 1.5% LE<sub>Sb</sub> can effectively alleviate the negative effects of water stress on maize plants.</p>","PeriodicalId":15086,"journal":{"name":"Journal of Applied Phycology","volume":"23 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Octanoic acid helps Poterioochromonas malhamensis control toxic Microcystis sp. 辛酸有助于马勒哈姆藻控制有毒的微囊藻。
IF 3.3 3区 生物学
Journal of Applied Phycology Pub Date : 2024-07-03 DOI: 10.1007/s10811-024-03301-2
Hao Yan, Qin Li, Xiaoxue Liu, Anya Jin, Yu Yao
{"title":"Octanoic acid helps Poterioochromonas malhamensis control toxic Microcystis sp.","authors":"Hao Yan, Qin Li, Xiaoxue Liu, Anya Jin, Yu Yao","doi":"10.1007/s10811-024-03301-2","DOIUrl":"https://doi.org/10.1007/s10811-024-03301-2","url":null,"abstract":"<p>This study explores the synergistic use of the mixotrophic flagellate <i>Poterioroochromonas malhamensis</i> and octanoic acid to effectively control harmful <i>Microcystis</i> sp. and prevent the resurgence of resistant strains. <i>Poterioroochromonas malhamensis</i> efficiently grazes on <i>Microcystis</i> sp., yet predation pressure can drive the evolution of resistant strains, which often re-emerge and predominate within approximately 20 days. Importantly, octanoic acid maintains its inhibitory and lethal effects against these strains, preventing their comeback. The study's key findings are as follows: (1) The concurrent application of <i>P. malhamensis</i> and 100 mg L<sup>-1</sup> octanoic acid rapidly eliminates <i>Microcystis</i> sp., utilizing the acid's resistance-suppressing properties to prevent regrowth. (2) A preliminary reduction of <i>Microcystis</i> sp. density by <i>P. malhamensis</i>, succeeded by a low dose of octanoic acid (12.5 mg L<sup>-1</sup> or higher), postpones the resurgence, presenting a cost-effective strategy. (3) In instances where <i>P. malhamensis</i> density is inadequate for controlling <i>Microcystis</i> sp. alone, a supplementary application of octanoic acid at 25 mg L<sup>-1</sup> daily for four days (25 mg L<sup>-1</sup>× 4) aids <i>P. malhamensis</i> in eradicating <i>Microcystis</i> sp. The study concludes that octanoic acid fortifies the biological control by <i>P. malhamensis</i> and, by inhibiting and eliminating resistant <i>Microcystis</i> strains, introduces an innovative strategy for managing <i>Microcystis</i> blooms.</p>","PeriodicalId":15086,"journal":{"name":"Journal of Applied Phycology","volume":"28 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cyanobacteria-based nutrimental strategy to enhance yield and quality of spinach 基于蓝藻的营养策略,提高菠菜的产量和质量
IF 3.3 3区 生物学
Journal of Applied Phycology Pub Date : 2024-07-02 DOI: 10.1007/s10811-024-03292-0
Ravi Mourthy Nivedha, Radha Prasanna, Akanksha Bhardwaj, Nallappa Reddy Bavana, Shalini Gaur Rudra, Awani Kumar Singh, Sandeep Kumar Lal, Sudipta Basu, Yashbir Singh Shivay
{"title":"Cyanobacteria-based nutrimental strategy to enhance yield and quality of spinach","authors":"Ravi Mourthy Nivedha, Radha Prasanna, Akanksha Bhardwaj, Nallappa Reddy Bavana, Shalini Gaur Rudra, Awani Kumar Singh, Sandeep Kumar Lal, Sudipta Basu, Yashbir Singh Shivay","doi":"10.1007/s10811-024-03292-0","DOIUrl":"https://doi.org/10.1007/s10811-024-03292-0","url":null,"abstract":"<p>The intricate interplay of plant-soil-microbial formulations was explored using cyanobacterium-based mixes (<i>Anabaena laxa</i> C11, <i>Nostoc carneum</i> BF2 and <i>Anabaena laxa</i> RPAN8) as seed coating, followed by soil drench at selected growth stages in spinach (variety <i>Pusa All green</i>). A field experiment under shade net conditions was conducted and data recorded 2, 3, 5 WAS (Weeks after sowing) and harvest stage. Cyanobacterial treatments led to significantly higher pigment content (0.58-1.29-fold), along with substantial enhancement in the enzyme activities of nitrate reductase (0.33 - 0.49-fold), glutamine synthetase (0.35 - 0.53-fold) and phosphoenol pyruvate carboxylase activity (0.17 -0.38-fold) in leaves. RPAN8 treatment led to a notable increase in spinach yield, while BF2 treatment stimulated ascorbic acid (0.37-fold), antioxidants (0.36-fold) and β-carotene (0.41-fold) in fruits, over control. Overall, C11 treatment consistently exhibited significantly superior results in terms of growth, soil microbiological, yield and quality attributes. Principal Component analyses illustrated a strong positive correlation of fruit ascorbic acid with soil chlorophyll and available iron. Path coefficient analysis revealed positive direct effects of available nitrogen with PEPCo, nitrate reductase, chlorophyll <i>a</i>, carotenoids, leaf area and antioxidants at different sampling intervals. Such organic formulations can be a valuable resource-efficient strategy for improving spinach yield and quality.</p>","PeriodicalId":15086,"journal":{"name":"Journal of Applied Phycology","volume":"20 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimizing seaweed biomass production - a two kelp solution 优化海藻生物量生产--双海带解决方案
IF 3.3 3区 生物学
Journal of Applied Phycology Pub Date : 2024-07-02 DOI: 10.1007/s10811-024-03296-w
Michael Stekoll, Alf Pryor, Alexandra Meyer, Hauke L. Kite-Powell, David Bailey, Kendall Barbery, Clifford A. Goudey, Scott Lindell, Loretta Roberson, Charles Yarish
{"title":"Optimizing seaweed biomass production - a two kelp solution","authors":"Michael Stekoll, Alf Pryor, Alexandra Meyer, Hauke L. Kite-Powell, David Bailey, Kendall Barbery, Clifford A. Goudey, Scott Lindell, Loretta Roberson, Charles Yarish","doi":"10.1007/s10811-024-03296-w","DOIUrl":"https://doi.org/10.1007/s10811-024-03296-w","url":null,"abstract":"<p>Interest in farming kelps has grown beyond using kelp for food, feed or biofuels. There is considerable interest in generating biomass from seaweed for use in bioplastics and other products that would substitute for petroleum-derived products. For these uses to be viable, large amounts of biomass are needed. Very large kelp farms can be expensive to build and maintain, leading to the need to optimize the biomass per unit area. Although close spacing of growlines can lead to poor growth, a viable approach may be to grow two species of kelps together: one that hangs down and one that is buoyant, growing up. This system would increase the spacing in three dimensions. In Alaska, <i>Saccharina latissima</i> is commonly grown hanging down from longlines. One of the buoyant Alaskan kelps is <i>Nereocystis luetkeana.</i> Because there are commercial uses for wild-harvested <i>Nereocystis</i> in Alaska, we undertook a preliminary trial in Kodiak, Alaska, that grew both <i>Saccharina</i> and <i>Nereocystis</i> in the same longline array. Closely spaced lines were seeded the first week of February 2023 and set at 3 m below the surface. The arrays were harvested in late June 2023. Total yields were greatest on the combined arrays, followed by the <i>Nereocystis</i> only and <i>Saccharina</i> only arrays. Despite having 45% fewer grow-lines, the total yield of the <i>Nereocystis</i> on the combined arrays was statistically similar to the <i>Nereocystis</i> only arrays. These results may have significance for large scale macroalgal production.</p>","PeriodicalId":15086,"journal":{"name":"Journal of Applied Phycology","volume":"43 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects on fatty acids, biochemical composition and growth of rotifer (Brachionus plicatilis) fed with different concentrations of Nannochloropsis sp. 用不同浓度的 Nannochloropsis sp.
IF 3.3 3区 生物学
Journal of Applied Phycology Pub Date : 2024-07-01 DOI: 10.1007/s10811-024-03302-1
Mustafa İbrahim Osmanoğlu, Mahmut Elp, Yaşar Durmaz
{"title":"Effects on fatty acids, biochemical composition and growth of rotifer (Brachionus plicatilis) fed with different concentrations of Nannochloropsis sp.","authors":"Mustafa İbrahim Osmanoğlu, Mahmut Elp, Yaşar Durmaz","doi":"10.1007/s10811-024-03302-1","DOIUrl":"https://doi.org/10.1007/s10811-024-03302-1","url":null,"abstract":"<p>The density of microalgae and nutrient content have impact on the population growth rate, egg rate and nutritional values of rotifers. The aim of this study was to investigate the effects of different concentrations of the alga <i>Nannochloropsis</i> sp. (N10: 10x10<sup>6</sup>, N20: 20x10<sup>6</sup>, N30: 30x10<sup>6</sup> cells mL<sup>-1</sup>) on the growth, egg rate, biochemical composition and fatty acid profile of the rotifer <i>Brachionus plicatilis</i>. To maintain a consistent algae density, an equivalent quantity was supplemented to compensate for any reduction. The study was started with three replicates, each with an initial inoculation density of 200 <i>Brachionus</i> individuals mL<sup>-1</sup> . The investigation spanned 5 days, during which population parameters (total number of individuals, proportion of individuals with eggs and growth rate) were calculated. After the study period, rotifers were harvested for subsequent biochemical and fatty acid analyses. Notably, the N30 group showed the highest proportions of crude protein (54.41%) and crude lipid (34.5%). The N20 group displayed the most substantial content of total fatty acids, recording a value of 70.69%. Consequently, the N30 group, with a concentration of 30x10<sup>6</sup> cells mL<sup>-1</sup>, emerged as the most proficient group, demonstrating superior performance in both population growth and biochemical composition.</p>","PeriodicalId":15086,"journal":{"name":"Journal of Applied Phycology","volume":"16 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient secretion of a true laccase by the acidophilic green microalga Chlamydomonas pitschmannii switched to alkaline pH 嗜酸性绿色微藻皮氏衣藻在碱性 pH 条件下高效分泌真正的漆酶
IF 3.3 3区 生物学
Journal of Applied Phycology Pub Date : 2024-06-29 DOI: 10.1007/s10811-024-03299-7
Stéphanie Gérin, Claire Remacle
{"title":"Efficient secretion of a true laccase by the acidophilic green microalga Chlamydomonas pitschmannii switched to alkaline pH","authors":"Stéphanie Gérin, Claire Remacle","doi":"10.1007/s10811-024-03299-7","DOIUrl":"https://doi.org/10.1007/s10811-024-03299-7","url":null,"abstract":"<p>Laccases are extracellular multicopper oxidases that react with a broad range of aromatic substrates and are used for many biotechnological applications. Recently, microalgal laccases were discovered and started to be characterized in some Chlorophyceae (<i>Tetracystis aeria</i> and a few other species). A volumetric activity of maximum 27 U L<sup>-1</sup> could be reached with <i>Chlamydomonas moewusii</i>, which is largely insufficient to compete with fungi and heterologous expression systems. Here, the acidophilic green microalga <i>Chlamydomonas pitschmannii</i> was shown to be a new promising source of laccase competing with fungi in terms of secretion yields. By modulating culture pH and CO<sub>2</sub> supply, laccase volumetric activity in the supernatant could be increased from 12 to 459 U L<sup>-1</sup>. Laccase-containing supernatants were found to oxidize many phenolic and non-phenolic substrates with an efficiency that was pH-dependent. 1D SDS-PAGE was achieved and lighted up that <i>C. pitschmannii</i> laccase is a glycosylated protein. Functional measurements pointed out the participation of glycosylation in functional enzymatic regulation and integrity. Two bands of about 50 and 45 kD were detected that presumably corresponded to laccase. In agreement with previous studies in <i>T. aeria</i>, we hypothesize that <i>C. pitschmannii</i> laccase is a heterodimer, a feature that denotes with most known laccases, essentially monomeric. Altogether, those results demonstrate that efforts of discovery and characterization of microalgal laccases must be continued with regards to the amazing potential they offer for biotechnological applications.</p>","PeriodicalId":15086,"journal":{"name":"Journal of Applied Phycology","volume":"62 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling the growth of the cultivated seaweed Undaria pinnatifida under climate change scenarios in the Seto Inland Sea, Japan 模拟气候变化情景下日本濑户内海养殖海藻裙带菜的生长情况
IF 3.3 3区 生物学
Journal of Applied Phycology Pub Date : 2024-06-21 DOI: 10.1007/s10811-024-03291-1
Goh Onitsuka, Goro Yoshida, Hiromori Shimabukuro, Shoichi Takenaka, Toshiharu Tamura, Shigeho Kakehi, Takashi Setou, Xinyu Guo, Hironori Higashi
{"title":"Modeling the growth of the cultivated seaweed Undaria pinnatifida under climate change scenarios in the Seto Inland Sea, Japan","authors":"Goh Onitsuka, Goro Yoshida, Hiromori Shimabukuro, Shoichi Takenaka, Toshiharu Tamura, Shigeho Kakehi, Takashi Setou, Xinyu Guo, Hironori Higashi","doi":"10.1007/s10811-024-03291-1","DOIUrl":"https://doi.org/10.1007/s10811-024-03291-1","url":null,"abstract":"<p>To assess the potential effects of future climate change on <i>Undaria pinnatifida</i> cultivation in the Seto Inland Sea, Japan, we developed an individual-based growth model for the <i>U. pinnatifida</i> sporophyte. Initially, we validated the model’s performance using field observation data. The simulation results replicated temporal variations in the total lengths of sporophytes at two stations with differing oceanographic conditions. Subsequently, we conducted numerical simulations of sporophyte growth in the Seto Inland Sea during the 1990s and projected outcomes for the 2090s under four emission scenarios of the Representative Concentration Pathway (RCP 2.6, 4.5, 6.0, and 8.5). The majority of areas exhibited decreased sporophyte growth in the 2090s compared to the 1990s, except for the eastern area under the RCP 2.6 scenario. This decline was attributed to delayed cultivation start times associated with ocean warming and reduced dissolved inorganic nitrogen concentrations. Interestingly, the impacts of ocean warming on <i>U. pinnatifida</i> cultivation were not uniformly negative. In addition to adverse effects, there were positive effects that accelerated growth rates in low-temperature winter areas. Sensitivity analyses revealed that the balance between positive and negative impacts varied geographically; moreover, the contrasts were enhanced with higher RCP scenarios. Simulations for climate change adaptation using a high<b>-</b>temperature tolerant cultivar indicated that yield losses could be mitigated, even under the RCP 8.5 scenario. Despite uncertainties in the simulation results, such as future management of nutrient loads and herbivore feeding damages, our projections underscore the potential sustainability and future viability of <i>U. pinnatifida</i> aquaculture in the Seto Inland Sea.</p>","PeriodicalId":15086,"journal":{"name":"Journal of Applied Phycology","volume":"27 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interactive effects of ocean acidification and nitrate on Ulva lactuca 海洋酸化和硝酸盐对莼菜的交互影响
IF 3.3 3区 生物学
Journal of Applied Phycology Pub Date : 2024-06-21 DOI: 10.1007/s10811-024-03297-9
Yan Ji, Yingying Jiang, Peng Jin, Jianrong Xia
{"title":"Interactive effects of ocean acidification and nitrate on Ulva lactuca","authors":"Yan Ji, Yingying Jiang, Peng Jin, Jianrong Xia","doi":"10.1007/s10811-024-03297-9","DOIUrl":"https://doi.org/10.1007/s10811-024-03297-9","url":null,"abstract":"<p>The global ocean is undergoing gradual acidification and eutrophication which may have significant impacts on macroalgal communities. However, little is known regarding the interactive effects of ocean acidification (OA) and nitrate on <i>Ulva lactuca,</i> a primary producer widely distributed in coastal waters. This study focuses on the possible interactive effects of OA and elevated nitrate levels on physiological parameters of <i>U. lactuca</i>. Higher nitrate levels may increase growth, photosynthesis, respiration, pigment synthesis, F<sub>v</sub>/F<sub>m</sub> and Effective Quantum Yield, whereas CO<sub>2</sub> enrichment may result in a reduction in photosynthesis, pigment content, F<sub>v</sub>/F<sub>m</sub> and Effective Quantum Yield. Higher nitrate levels increase NO<sub>3</sub><sup>-</sup> uptake rate and nitrate reductase activity, which are further amplified by elevated CO<sub>2</sub> levels. However, the stimulation of high nitrate towards pigment synthesis and photosynthesis is negatively affected by elevated CO<sub>2</sub> levels. Our results suggest that <i>U. lactuca</i> could potentially increase its biomass in coastal eutrophic waters, and OA in the future is not expected to promote the growth of <i>U. lactuca</i>, but it can enhance its potential biofiltration to remove nitrate from coastal ecosystems.</p>","PeriodicalId":15086,"journal":{"name":"Journal of Applied Phycology","volume":"9 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Toxic effects of bisphenol analogues and their mixture on two freshwater algae Chlorella vulgaris and Desmodesmus armatus 双酚类似物及其混合物对两种淡水藻类小球藻(Chlorella vulgaris)和甲藻(Desmodesmus armatus)的毒性作用
IF 3.3 3区 生物学
Journal of Applied Phycology Pub Date : 2024-06-20 DOI: 10.1007/s10811-024-03289-9
Karolina Czarny-Krzymińska, Barbara Krawczyk, Dominik Szczukocki
{"title":"Toxic effects of bisphenol analogues and their mixture on two freshwater algae Chlorella vulgaris and Desmodesmus armatus","authors":"Karolina Czarny-Krzymińska, Barbara Krawczyk, Dominik Szczukocki","doi":"10.1007/s10811-024-03289-9","DOIUrl":"https://doi.org/10.1007/s10811-024-03289-9","url":null,"abstract":"<p>Bisphenol A (BPA) is an emerging organic compound used in the production of epoxy resin, polycarbonate plastics and thermal paper. Following the restrictions on the use of bisphenol A, many substitutes have been produced as its replacement in several consumer products. The main task of this research was to examine the toxic effects of single bisphenol analogues and their mixtures against freshwater microalgae <i>Chlorella vulgaris</i> and <i>Desmodesmus armatus</i>. The findings suggest that bisphenol B, bisphenol C, bisphenol PH (EC<sub>50</sub> (14 day): 33.32-43.32 mg L<sup>-1</sup>) and bisphenol B, bisphenol C, bisphenol FL, bisphenol PH (EC<sub>50</sub> (14 day): 30.49-64.54 mg L<sup>-1</sup>) show strong toxic effects towards <i>C. vulgaris</i> and <i>D. armatus</i>, respectively. In turn, the research results indicate that the toxicity of a mixture of examined bisphenol analogs on both species of green algae is much higher (EC<sub>50</sub> (14 day): 24.55-32.68 mg L<sup>-1</sup>) than the individual toxicity of each component of the mixture. Therefore, it can be concluded that mixtures lead to the occurrence of synergistic effects. The toxicity of the individual bisphenol analogues and their mixture by EC<sub>50</sub> (14 day) values in descending order, was as follows: mixture&gt;bisphenol PH&gt; bisphenol B&gt; bisphenol C&gt; bisphenol FL&gt; bisphenol F&gt; bisphenol E for <i>C. vulgaris</i> and bisphenol B&gt; mixture&gt; bisphenol FL&gt; bisphenol C&gt; bisphenol PH&gt; bisphenol E&gt; bisphenol F for <i>D. armatus</i>, respectively. Moreover, the present research expands current knowledge of the ecotoxicological risks of bisphenol analogues to aquatic organisms.</p>","PeriodicalId":15086,"journal":{"name":"Journal of Applied Phycology","volume":"1 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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