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Effect of light regime on seedling development of eelgrass (Zostera marina L.) 光照条件对大叶藻幼苗发育的影响
IF 1.9 4区 生物学
Aquatic Botany Pub Date : 2025-09-01 Epub Date: 2025-04-07 DOI: 10.1016/j.aquabot.2025.103898
Sahoko Takeda, Sayaka Watanabe, Naoya Miura, Hajime Shiota
{"title":"Effect of light regime on seedling development of eelgrass (Zostera marina L.)","authors":"Sahoko Takeda,&nbsp;Sayaka Watanabe,&nbsp;Naoya Miura,&nbsp;Hajime Shiota","doi":"10.1016/j.aquabot.2025.103898","DOIUrl":"10.1016/j.aquabot.2025.103898","url":null,"abstract":"<div><div>Light plays a crucial role in plant development and growth. Plants use photoreceptors to perceive light of varying wavelengths and intensities, translating these signals into photoresponses. In the marine environments where seagrasses grow, blue light is predominant due to the absorption of longer wavelengths by water. To elucidate the photoresponses of seagrasses, we analyzed the photoresponses of young seedlings of eelgrass (<em>Zostera marina</em>), whose genome analysis has confirmed the presence of photoreceptors. When cultured under white, blue, green, or red light, the coleoptiles were shorter, and de-etiolated primary leaves were observed. Conversely, under dark conditions, coleoptiles were elongated, and primary leaves did not emerge. These findings indicate that light reduces coleoptile elongation and promotes the emergence and de-etiolation of primary leaves. The reduction in coleoptile elongation was enhanced under intense blue light but diminished under strong red light. Additionally, primary leaf emergence was lowered under high red light conditions. The expression of photoreceptor genes (<em>ZoPHYA, ZoPHYB</em>, and <em>ZoCRY1</em>) was upregulated during seed germination, with <em>ZoPHYA</em> and <em>ZoCRY1</em> expression being particularly elevated at the coleoptile tips. Our results imply that, in young eelgrass seedlings, red and blue light are perceived at the coleoptile tips, triggering the transition from embryonic to vegetative growth. However, this transition is attenuated by intense red light. This response is likely to be an adaptive mechanism, enabling eelgrass to grow at optimal depths where blue light dominates.</div></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"200 ","pages":"Article 103898"},"PeriodicalIF":1.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Reproductive and recruitment potential of Halophila hawaiiana 夏威夷嗜盐菌的繁殖和招募潜力
IF 1.9 4区 生物学
Aquatic Botany Pub Date : 2025-09-01 Epub Date: 2025-04-26 DOI: 10.1016/j.aquabot.2025.103899
Mikinley Weaver , Chelsie W.W. Counsell
{"title":"Reproductive and recruitment potential of Halophila hawaiiana","authors":"Mikinley Weaver ,&nbsp;Chelsie W.W. Counsell","doi":"10.1016/j.aquabot.2025.103899","DOIUrl":"10.1016/j.aquabot.2025.103899","url":null,"abstract":"<div><div>Understanding the details of seagrass species’ vegetative and sexual reproductive capacity is important to inform restoration efforts for these habitat engineers. Previous work has shown that vegetative fragments of <em>Halophila</em> species can settle and establish in new areas. However, it is unclear whether fragment size impacts vegetative reproduction success, and whether the isolated species <em>Halophila hawaiiana</em> has retained this ability. To determine whether <em>H. hawaiiana</em> can settle and establish from vegetative fragments, we took fragments of various sizes and fixed them to a string held just above the sediment in situ. We found that fragments could settle and establish into the sediment; 39 % of fragments grew roots into the sediment by day 14. Fragment settlement was strongly associated with month and location. Fragment size non-linearly influenced fragment settlement, with medium-sized fragments (four to six nodes) being the most successful. Regarding sexual reproduction for <em>H. hawaiiana</em>, observed seeds have previously been considered a result of apomixis; however, the presence of staminate flowers indicates that sexual reproduction may be possible. We collected flowers and artificially pollinated them in the lab, with unpollinated flowers isolated as a control. Endosperm growth and seed production was observed in the treatment group but not the control - suggesting sexual reproduction and not apomixis is the method of seed production for this species. To guide seagrass conservation efforts, future research is needed to understand the links between vegetative fragment settlement and patch expansion, and to determine environmental factors that induce flowering and seed germination in <em>H</em>. <em>hawaiiana</em>.</div></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"200 ","pages":"Article 103899"},"PeriodicalIF":1.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Characterization of plant growth-promoting rhizobacteria associated with Posidonia oceanica meadow in the North coast of Monastir, Tunisia 突尼斯莫纳斯提尔北海岸海洋波西多尼亚草甸植物促生根瘤菌的特征
IF 1.9 4区 生物学
Aquatic Botany Pub Date : 2025-09-01 Epub Date: 2025-05-05 DOI: 10.1016/j.aquabot.2025.103902
Khaled Elmnasri , Mohamed El Gtari
{"title":"Characterization of plant growth-promoting rhizobacteria associated with Posidonia oceanica meadow in the North coast of Monastir, Tunisia","authors":"Khaled Elmnasri ,&nbsp;Mohamed El Gtari","doi":"10.1016/j.aquabot.2025.103902","DOIUrl":"10.1016/j.aquabot.2025.103902","url":null,"abstract":"<div><div>Given the significant ecological and socio-economic roles played by seagrass beds in the Mediterranean Sea, there is an urgent need to explore effective approaches for the conservation and restoration of <em>Posidonia oceanica</em> meadows. The characterization and utilization of plant growth-promoting rhizobacteria (PGPRs) appear to be one of the most innovative methods. In this study, metataxonomic analysis revealed the dominance of bacteria belonging to <em>Acinetobacter</em> (36.7 %), <em>Halodesulfovibrio</em> (38 %), <em>Vibrio</em> (9 %), <em>Lactobacillus</em> (1.3 %), <em>Arcobacter</em> (3 %), and <em>Desulforhopalus</em> (1 %) in the rhizosphere of <em>P. oceanica</em>, sampled from the northern coast of Monastir. Compared to the rhizosphere samples, a loss of biodiversity was observed in bulk sediment from adjacent erosive intermattes, with the disappearance of <em>Halodesulfovibrio</em>, <em>Anaerovorax</em>, <em>Anaerotignum</em>, and <em>Marinomonas</em> representatives, alongside a reduction in the abundance of <em>Vibrio</em>, <em>Arcobacter</em>, and <em>Desulforhopalus</em>. Isolation on Marine Agar medium allowed the purification of 42 bacterial strains, assigned to the genera <em>Vibrio</em>, <em>Pseudoalteromonas, Alteromonas, Bermanella, Marinomonas</em>, and <em>Tritonibacter</em>, with the detection of a new species closely related to <em>V. viridaestus</em>. The ability of these bacteria to produce hydrogen cyanide (HCN), ammonia (NH3), indole-3-acetic acid (IAA), and enzymes such as esterase, amylase, protease, agarase, and cellulase was also evaluated. The most promising strains for growth promotion were identified as <em>Pseudoalteromonas shioyasakiensis</em> PRL9 and PRL10, <em>Alteromonas abrolhosensis</em> PRA3, and <em>Marinomonas aquiplantarum</em> PR10. In vivo trials of the PGPR consortium on <em>Posidonia</em> seedling growth are planned.</div></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"200 ","pages":"Article 103902"},"PeriodicalIF":1.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Plastome evolution and phylogenomic insights into the evolution of the African submerged endemic genus Lagarosiphon (Hydrocharitaceae) 非洲水下特有属Lagarosiphon (Hydrocharitaceae)的质体进化和系统基因组学研究
IF 1.9 4区 生物学
Aquatic Botany Pub Date : 2025-09-01 Epub Date: 2025-05-08 DOI: 10.1016/j.aquabot.2025.103901
Zhi-Zhong Li , Ying Wang , Andrey Efremov
{"title":"Plastome evolution and phylogenomic insights into the evolution of the African submerged endemic genus Lagarosiphon (Hydrocharitaceae)","authors":"Zhi-Zhong Li ,&nbsp;Ying Wang ,&nbsp;Andrey Efremov","doi":"10.1016/j.aquabot.2025.103901","DOIUrl":"10.1016/j.aquabot.2025.103901","url":null,"abstract":"<div><div>The genus <em>Lagarosiphon</em>, a remarkable group of fully submerged plants within the family Hydrocharitaceae, is native to tropical Africa. However, the phylogenetic relationships among its species have long remained elusive due to a lack of molecular data. In this study, we assembled and compared the plastomes of three <em>Lagarosiphon</em> species from Africa. By integrating additional data from public databases, we reconstructed the phylogeny and evolutionary history of the genus. Our results revealed that the plastomes of <em>Lagarosiphon</em> were conserved but exhibited notable length variation, likely due to the accumulation of dispersed repeats. Furthermore, we found that nucleotide diversity in the intergenic spacer regions was significantly higher than in the protein-coding genes. Such regions as <em>ycf1</em>, <em>infA</em>, <em>rpl23</em>-<em>trnI-CAU</em>, and <em>ycf1</em>-<em>ndhF</em> were recognized as mutation hotspots, highlighting their potential as important markers for future population genetics and phylogenetic studies. Phylogenomic analysis strongly supported <em>Lagarosiphon</em> as a monophyly, with the most recent common ancestor estimated to have occurred around 29.95 Ma. The diversification of this genus in Africa is likely a response to rapid climatic and geological changes during the Miocene. Our study provides valuable molecular resources for the taxonomic and phylogenomic investigation of the genus <em>Lagarosiphon</em>.</div></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"200 ","pages":"Article 103901"},"PeriodicalIF":1.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143950446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Rapid loss of temperate kelp forests revealed by unmanned aerial vehicle (UAV) photography and underwater observations 无人机(UAV)摄影和水下观测揭示了温带海带森林的迅速消失
IF 1.9 4区 生物学
Aquatic Botany Pub Date : 2025-09-01 Epub Date: 2025-04-29 DOI: 10.1016/j.aquabot.2025.103900
Masaaki Sato , Junji Kinoshita , Kyoji Ishita , Shiori Arima , Masayuki Fudo , Hisami Kuwahara
{"title":"Rapid loss of temperate kelp forests revealed by unmanned aerial vehicle (UAV) photography and underwater observations","authors":"Masaaki Sato ,&nbsp;Junji Kinoshita ,&nbsp;Kyoji Ishita ,&nbsp;Shiori Arima ,&nbsp;Masayuki Fudo ,&nbsp;Hisami Kuwahara","doi":"10.1016/j.aquabot.2025.103900","DOIUrl":"10.1016/j.aquabot.2025.103900","url":null,"abstract":"<div><div>Climate-related increases in ocean temperature, herbivore abundance, and the frequency of extreme weather events have triggered phase shifts from kelp forests to deforested barrens. While unmanned aerial vehicle (UAV) photography is now an effective method for monitoring marine environments, few studies have used it to detect changes in submerged marine forests. To investigate changes in kelp forests formed by <em>Ecklonia cava</em> under the influence of ocean warming and large typhoons, we conducted UAV photography in two areas (70,755 and 116,199 m<sup>2</sup>) and underwater visual surveys along two transects off the Manazuru coast of central Japan (35 °09'N) between 2019 and 2020. UAV photography revealed a complete loss of the kelp forests (34,042 and 48,641 m<sup>2</sup>) there from 2019 to 2020. The underwater visual census revealed a change in benthic communities, with a 57.3 % decrease in <em>Ecklonia</em> cover and an 11.3 % increase in small and coralline algae cover during this period. Based on the wave height during the passage of Typhoon Hagibis in fall 2019, ocean warming since 2008, and the prolonged period of high temperature (&gt; 16 °C) from fall 2019 autumn to winter 2020, we speculated that the phase shift from <em>Ecklonia</em> beds to deforested barrens was due to the synergistic effects of the typhoon, ocean warming, and enhanced fish herbivory due to high temperature. Our results demonstrate the utility of UAV photography for monitoring submerged kelp forests, and combined results with previous studies suggest that the distribution of the phase shifts has expanded to higher latitudes in Japan.</div></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"200 ","pages":"Article 103900"},"PeriodicalIF":1.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Hydrological suitability for mangrove species in restored mangroves in abandoned ponds 废弃池塘中恢复红树林物种的水文适宜性
IF 1.9 4区 生物学
Aquatic Botany Pub Date : 2025-07-01 Epub Date: 2025-02-25 DOI: 10.1016/j.aquabot.2025.103873
Frida Sidik , Mohammad Basyuni , Novia Arinda Pradisty , Rizki Hanintyo , Nuryani Widagti , Bayu Priyono , Rizka Amelia , Paul Macklin , Nyoman Surana , Bejo Slamet
{"title":"Hydrological suitability for mangrove species in restored mangroves in abandoned ponds","authors":"Frida Sidik ,&nbsp;Mohammad Basyuni ,&nbsp;Novia Arinda Pradisty ,&nbsp;Rizki Hanintyo ,&nbsp;Nuryani Widagti ,&nbsp;Bayu Priyono ,&nbsp;Rizka Amelia ,&nbsp;Paul Macklin ,&nbsp;Nyoman Surana ,&nbsp;Bejo Slamet","doi":"10.1016/j.aquabot.2025.103873","DOIUrl":"10.1016/j.aquabot.2025.103873","url":null,"abstract":"<div><div>Mangrove restoration projects in Indonesia are widely conducted in abandoned aquaculture ponds, however the success of planting mangroves is limited as tidal flooding is often not considered. The hydrology of mangrove surrounding water is both complex and dynamic and creates tide-induced flow and mangrove vegetation interaction that influences hydrological suitability of mangrove species. In this study, we aimed to determine the hydrological suitability for specific mangrove species in mangrove restoration efforts in abandoned aquaculture ponds by measuring tidal inundation duration in mangrove waters. The study was undertaken in two restored mangroves sites in abandoned ponds in Perancak estuary, Bali and Lubuk Kertang, North Sumatra, which was combined with measurements of intact mangroves for comparison. Tidal flooding (inundation and current velocity) was recorded to obtain flooding period measurements (depth, duration and tidal velocity) in association with mangrove succession rates. We found that the variability of tidal flooding between study sites was found to determine dominant mangrove species, suggesting a mangrove species-specific tolerance to tidal flooding in establishing habitats. Among the species observed, <em>Nypa fruticans</em> was found to be the most resilient to prolonged tidal inundations. <em>Rhizophora</em> spp<em>., Avicennia</em> spp., <em>Sonneratia alba</em>, however, adapted to a wider range of inundation periods. The tidal inundation in restored mangrove ponds was characterized by low current velocities, which provides suitable conditions for mangrove recovery in restoration sites. This information on hydrological classification proves that the effectiveness of mangrove restoration projects can be improved by highlighting the necessity to account for localized tidal inundation regimes.</div></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"199 ","pages":"Article 103873"},"PeriodicalIF":1.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
New records of red algae (Rhodophyta) from the intertidal rocky shore of Visakhapatnam coast of Bay of Bengal, India 印度孟加拉湾维萨卡帕特南海岸潮间带岩岸红藻的新记录
IF 1.9 4区 生物学
Aquatic Botany Pub Date : 2025-07-01 Epub Date: 2025-03-13 DOI: 10.1016/j.aquabot.2025.103883
A. Sakshi Rao, Swathi Pattigundla, Rama Ravi Teja Kosuri, Brajogopal Samanta
{"title":"New records of red algae (Rhodophyta) from the intertidal rocky shore of Visakhapatnam coast of Bay of Bengal, India","authors":"A. Sakshi Rao,&nbsp;Swathi Pattigundla,&nbsp;Rama Ravi Teja Kosuri,&nbsp;Brajogopal Samanta","doi":"10.1016/j.aquabot.2025.103883","DOIUrl":"10.1016/j.aquabot.2025.103883","url":null,"abstract":"<div><div>In the present study, we identified nine red algal species from the intertidal rocky shore of the Visakhapatnam coast, Bay of Bengal, India, using an integrated taxonomic approach, including morphological, anatomical, and multigene phylogenetic analyses based on SSU rDNA, <em>rbc</em>L, and COI gene markers. Seven of them were the new records to the study area, including <em>Centroceras gasparrinii, Gelidium nayaritense, Pterocladiella bartlettii, Hypnea charoides, Hypnea</em> cf. <em>edeniana, Gracilaria multifurcata, and Gracilaria rangiferina.</em> Of these seven species, <em>P. bartlettii</em>, <em>G. multifurcata</em>, and <em>G. rangiferina</em> were new records to the Bay of Bengal coast, whereas <em>H.</em> cf. <em>edeniana</em> and <em>G. nayaritense</em> were new records to the Indian Ocean. Our result suggested that red algal species cataloging is still under-representation in the study area. In the future, systematic sampling strategies from different tidal zones across different times of the year may report more new records and new species of red algae from this coastline.</div></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"199 ","pages":"Article 103883"},"PeriodicalIF":1.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Responses of an invasive plant Alternanthera philoxeroides to cadmium, nutrient availability and water temperature 入侵植物黄花莲子对镉、养分有效性和水温的响应
IF 1.9 4区 生物学
Aquatic Botany Pub Date : 2025-07-01 Epub Date: 2025-03-24 DOI: 10.1016/j.aquabot.2025.103885
Zi-Yang Xie , Zhi-Hang Liu , Xin-Yue Gu, Yuan-Yuan Qin, Yu-Ting Du, Jin Yan, Rui Zhang, Chao Si
{"title":"Responses of an invasive plant Alternanthera philoxeroides to cadmium, nutrient availability and water temperature","authors":"Zi-Yang Xie ,&nbsp;Zhi-Hang Liu ,&nbsp;Xin-Yue Gu,&nbsp;Yuan-Yuan Qin,&nbsp;Yu-Ting Du,&nbsp;Jin Yan,&nbsp;Rui Zhang,&nbsp;Chao Si","doi":"10.1016/j.aquabot.2025.103885","DOIUrl":"10.1016/j.aquabot.2025.103885","url":null,"abstract":"<div><div>Introduced plant invasion, heavy metal pollution, eutrophication, and rising water temperatures collectively pose complex and severe environmental problems in freshwater ecosystems. Further clarification is needed on how invasive plants respond to these combined environmental stresses. We investigated the response of <em>Alternanthera philoxeroides</em>, a common invasive plant species in China, to two levels of cadmium concentration (0 or 1 mg L<sup>−1</sup> Cd<sup>2+</sup>), crossed with two levels of nutrient availability (0 or 10 mL L<sup>−1</sup> concentrated nutrient solution) and two levels of water temperature treatments (25 or 35 ℃). The presence of cadmium significantly inhibited the overall growth of <em>A. philoxeroides</em>, while the high nutrient level increased its growth. Temperature did not affect overall growth but primarily influenced branch number. There were statistically significant interactions between nutrient availability and temperature for several of our measurements; however, such significant interactions were not observed in the other two-way interactions. Overall, the high temperature enhanced the benefits derived from the high nutrient availability on the performance of <em>A. philoxeroides</em>. The three-way interaction only affected root-shoot ratio. The findings suggest that the high water temperature may exacerbate outbreaks of this invasive plant, particularly in freshwater habitats with high nutrient levels.</div></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"199 ","pages":"Article 103885"},"PeriodicalIF":1.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Integrative taxonomy reveals the presence of seagrass Ruppia brevipedunculata in India 综合分类法揭示了印度海草 Ruppia brevipedunculata 的存在
IF 1.9 4区 生物学
Aquatic Botany Pub Date : 2025-07-01 Epub Date: 2025-03-26 DOI: 10.1016/j.aquabot.2025.103886
M.S. Silpa , Amit Kumar , R. Giridharan , Prakash Sanjeevi
{"title":"Integrative taxonomy reveals the presence of seagrass Ruppia brevipedunculata in India","authors":"M.S. Silpa ,&nbsp;Amit Kumar ,&nbsp;R. Giridharan ,&nbsp;Prakash Sanjeevi","doi":"10.1016/j.aquabot.2025.103886","DOIUrl":"10.1016/j.aquabot.2025.103886","url":null,"abstract":"<div><div>The seagrass genus <em>Ruppia</em> comprises eleven accepted species worldwide. In India, the genus is represented by a single species <em>Ruppia maritima</em>. However, recent studies indicated that the reported species of <em>R. maritima</em> in the Indo-Pacific region belongs to <em>R. brevipedunculata</em>. We have examined the specimen of <em>Ruppia</em> sp. from Pulicat Lake, India, and found that it belongs to <em>R. brevipedunculata</em> Shuo Yu &amp; Hartog (2014) based on key morphological characters such as the short peduncle. Phylogenetic analysis of the maternal chloroplast maturase K (matK) gene and nuclear internal transcribed spacer (ITS) sequence ascertained the species identity as the specimen clustered with previously reported <em>R. brevipedunculata.</em></div></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"199 ","pages":"Article 103886"},"PeriodicalIF":1.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
The release of arsenic is a hidden risk during the in-situ decomposition of landed sargassum litter 在马尾藻凋落物原位分解过程中,砷的释放是一个隐患
IF 1.9 4区 生物学
Aquatic Botany Pub Date : 2025-07-01 Epub Date: 2025-03-25 DOI: 10.1016/j.aquabot.2025.103884
Bruno Chávez-Vergara , Elizabeth Solleiro-Rebolledo , Rafael López-Martínez , Ofelia Beltrán-Paz , Águeda E. Ceniceros-Gómez , Germán Yañez-Mendoza
{"title":"The release of arsenic is a hidden risk during the in-situ decomposition of landed sargassum litter","authors":"Bruno Chávez-Vergara ,&nbsp;Elizabeth Solleiro-Rebolledo ,&nbsp;Rafael López-Martínez ,&nbsp;Ofelia Beltrán-Paz ,&nbsp;Águeda E. Ceniceros-Gómez ,&nbsp;Germán Yañez-Mendoza","doi":"10.1016/j.aquabot.2025.103884","DOIUrl":"10.1016/j.aquabot.2025.103884","url":null,"abstract":"<div><div>Low molecular organic compounds and nutrients are released during the natural breakdown of plant tissues. However, if the organisms accumulate potentially toxic elements (PTE), these can be released into the environment; this is a latent risk during the decomposition of sargassum litter. This topic has been studied only in ex-situ conditions. We quantified the PTE concentration in fresh and in situ naturally decomposed sargassum litter. The results indicated that only arsenic demonstrates a high concentration in fresh biomass and litter across different stages of decomposition, exceeding 65 % initially, but decreasing to less than 20 % in the later stage concerning total As in each decomposition phase. These findings offer valuable insights into the release of As in leachates during natural decay and the residual As in partially decomposed sargassum litter.</div></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"199 ","pages":"Article 103884"},"PeriodicalIF":1.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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