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| 1 | Spatial variations in the trophic status of Favia palauensis corals in the South China Sea:Insights into their different adaptabilities under contrasting environmental conditions显示文摘Scleractinian corals exhibit a dual trophic pattern of autotrophic photosynthesis and heterotrophic predation.However,whether corals can adjust their trophic status under contrasting environmental conditions remains unclear.In our study,70 scleractinian corals(Favia palauensis)were collected from Sanya and the Xisha and Nansha Islands in the South China Sea.We measured the zooxanthellae density(ZD)andδ^(13)C of zooxanthellae(δ^(13)C_(z))and host tissue(δ^(13)C_(h))and analyzed the difference betweenδ^(13)C_(h) andδ^(13)C_(z)(i.e.,△^(h-z)^(13)C).The relatively high ZD andδ^(13)C_(z) values in the samples from Sanya indicate that these corals might have higher photosynthetic rates and autotrophic abilities than those from Xisha and Nansha.In contrast,the relatively lowδ^(13)C_(h) and△^(h-z)^(13)C values in the samples from Xisha and Nansha suggest that these corals might have a higher heterotrophic ability than those from Sanya.In addition,we tested the coral tissue biomass and skeletalδ^(13)C(δ^(13)C_(s))in the samples from Sanya and examined their correlations with△^(h-z)^(13)C.The results showed a negative correlation,indicating that the more the organic material produced by the coral,the stronger its heterotrophic ability.Our results show that corals can adjust their trophic status under different environmental and physiological conditions,which is essential for increasing their adaptability to different environmental conditions. | Shendong XU Zhinan ZHANG Kefu YU Xueyong HUANG Hanji CHEN Zhenjun QIN Risheng LIANG | 2021 | Science China Earth Sciences2021，64，6： | 2 |
| 2 | A Control Strategy on Starting up a Vehicle with AMT显示文摘 | Amir I A Qin Datong Liu Zhenjun | 2005 | In- formation Technology Journal2005，4，2： | 1 |
| 3 | A control strategy on starting up of vehicle with automatic manual transmis- sions 显示文摘 | AMIR I A QIN Datong LIU Zhenjun | 2005 | Information Technology Journal2005，4，2： | 1 |
| 4 | A control strategy on starting up of vehicle with automatic manual transmissions (AMT)显示文摘 | AMIR I A QIN Datong LIU Zhenjun | 2005 | Information Technology Journal2005，4，2： | 1 |
| 5 | A control strategyon starting up of vehicle with automatic manual transmis-sions 显示文摘 | AMIR I A QIN Datong LIU Zhenjun | 2005 | Information Technology Journal2005，4，2： | 1 |
| 6 | A control strategy on starting up of vehicle with automatic manual transmissions (AMT)显示文摘 | AMIR I A QIN Datong LIU Zhenjun | 2005 | Information Technology Journal2005，4，2： | 1 |
| 7 | A control strategy on starting up of vehicle with automatic manual transmissions (AMT) 显示文摘 | Amir lbrahim A Qin Datong Liu Zhenjun | 2005 | Information Technology Journal2005，4，2： | 1 |
| 8 | Distribution Patterns of Synechococcus Indicated Their Environmental Constraints and Related Geochemical Processes in the Yellow Sea显示文摘Synechococcus is a widely distributed photosynthetic pico-phytoplankton,which contributes mainly to carbon fixation and maintains the stability of the marine ecosystem.To investigate its distribution patterns in the Yellow Sea,seawater samples were collected during September 2018.Results of flow cytometry analysis showed that the Synechococcus abundance ranged from 6.36×10^(2) to 4.51×10^(4) cells mL^(−1),which correlated with salinity(P<0.01)and temperature(P<0.05).At deeper off-shore sites,Synecho-coccus showed high abundance at the subsurface thermo-halocline,which was in accordance with chlorophyll a(Chl a)content along the vertical column.Based on the high-throughput sequencing data of rpoC1(partial gene encoding RNA polymerase),two Synechococcus subclusters,S5.1 and S5.2,were found to coexist in the studied area.Several clades of S5.1,including Clades I,II,and III,were the dominant components,accounting for 6.63%,26.11%,and 45.5%of the total genus,respectively.Redundancy analysis(RDA)showed that nitrite was the main environmental factor that explained the genus composition among samples.Fur-thermore,co-occurrence network revealed that the main phyla that coexisted with Synechococcus were Proteobacteria,Bacteroidetes,Actinobacteria,Planctomycetes,and Verrucomicrobia,which were involved in the carbon(C),nitrogen(N),sulfur(S),and manga-nese(Mn)cycles.Overall,Synechococcus exhibited biogeographic distribution correlated with temperature-salinity and nitrite in the Yellow Sea,and their geochemical function showed diverse but should be further verified in the future. | ZHOU Yuting WANG Ting CHEN Xi QIN Song ZHAO Zhenjun GUO Xinyi LI Jialin | 2022 | Journal of Ocean University of China2022，21，2： | 0 |
| 9 | Chemical diversity of scleractinian corals revealed by untargeted metabolomics and molecular networking显示文摘The chemical diversity of scleractinian corals is closely related to their physiological,ecological,and evolutionary status,and can be influenced by both genetic background and environmental variables.To investigate intraspecific variation in the metabolites of these corals,the metabolomes of four species(Pocillopora meandrina,Seriatopora hystrix,Acropora formosa,and Fungia fungites)from the South China Sea were analyzed using untargeted mass spectrometry-based metabolomics.The results showed that a variety of metabolites,including amino acids,peptides,lipids,and other small molecules,were differentially distributed among the four species,leading to their significant separation in principal component analysis and hierarchical clustering plots.The higher content of storage lipids in branching corals(P.meandrina,S.hystrix,and A.formosa)compared to the solitary coral(F.fungites)may be due to the high densities of zooxanthellae in their tissues.The high content of aromatic amino acids in P.meandrina may help the coral protect against ultraviolet damage and promote growth in shallow seawater,while nitrogen-rich compounds may enable S.hystrix to survive in various challenging environments.The metabolites enriched in F.fungites,including amino acids,dipeptides,phospholipids,and other small molecules,may be related to the composition of the coral's mucus and its life-history,such as its ability to move freely and live solitarily.Studying the chemical diversity of scleractinian corals not only provides insight into their environmental adaptation,but also holds potential for the chemotaxonomy of corals and the discovery of novel bioactive natural products. | Jiying Pei Yuxia Zhou Shiguo Chen Kefu Yu Zhenjun Qin Ruijie Zhang Yitong Wang | 2023 | Acta Oceanologica Sinica2023，42，11： | 0 |
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