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579 results on '"Zhang, Shu-Sheng"'

9. Differential Mitochondrial Genome Expression of Four Hylid Frog Species under Low-Temperature Stress and Its Relationship with Amphibian Temperature Adaptation.

Author

Hong, Yue-Huan, Yuan, Ya-Ni, Li, Ke, Storey, Kenneth B., Zhang, Jia-Yong, Zhang, Shu-Sheng, and Yu, Dan-Na

Subjects
MITOCHONDRIAL DNA, HYLIDAE, GENE expression, BIOLOGICAL extinction, BODY temperature regulation, EXTREME weather, COLD adaptation, PHYLOGEOGRAPHY
Abstract

Extreme weather poses huge challenges for animals that must adapt to wide variations in environmental temperature and, in many cases, it can lead to the local extirpation of populations or even the extinction of an entire species. Previous studies have found that one element of amphibian adaptation to environmental stress involves changes in mitochondrial gene expression at low temperatures. However, to date, comparative studies of gene expression in organisms living at extreme temperatures have focused mainly on nuclear genes. This study sequenced the complete mitochondrial genomes of five Asian hylid frog species: Dryophytes japonicus, D. immaculata, Hyla annectans, H. chinensis and H. zhaopingensis. It compared the phylogenetic relationships within the Hylidae family and explored the association between mitochondrial gene expression and evolutionary adaptations to cold stress. The present results showed that in D. immaculata, transcript levels of 12 out of 13 mitochondria genes were significantly reduced under cold exposure (p < 0.05); hence, we put forward the conjecture that D. immaculata adapts by entering a hibernation state at low temperature. In H. annectans, the transcripts of 10 genes (ND1, ND2, ND3, ND4, ND4L, ND5, ND6, COX1, COX2 and ATP8) were significantly reduced in response to cold exposure, and five mitochondrial genes in H. chinensis (ND1, ND2, ND3, ND4L and ATP6) also showed significantly reduced expression and transcript levels under cold conditions. By contrast, transcript levels of ND2 and ATP6 in H. zhaopingensis were significantly increased at low temperatures, possibly related to the narrow distribution of this species primarily at low latitudes. Indeed, H. zhaopingensis has little ability to adapt to low temperature (4 °C), or maybe to enter into hibernation, and it shows metabolic disorder in the cold. The present study demonstrates that the regulatory trend of mitochondrial gene expression in amphibians is correlated with their ability to adapt to variable climates in extreme environments. These results can predict which species are more likely to undergo extirpation or extinction with climate change and, thereby, provide new ideas for the study of species extinction in highly variable winter climates. [ABSTRACT FROM AUTHOR]

Published
2024
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15. First and second instar larvae and adults of a new Homidia species (Collembola, Entomobryidae) recorded from Xizang Autonomous Region with three new records

Author

Xiang, Ling-bin, Zhang, Shu-sheng, Liu, Lei-lei, and Pan, Zhi-xiang

Subjects
Arthropoda, larvae, Entomobryinae, Biota, Entomobryoidea, Entomobryini, Entomobryidae, taxonomy, Entomobrya, key, Animalia, Collembola, Xizang, Animal Science and Zoology, Entomobryomorpha, Homidia, Ecology, Evolution, Behavior and Systematics
Abstract

Three new recorded species of genus Homidia were collected from Xizang Autonomous Region, China, in the present paper. Among them, a new species, Homidia breviseta Pan, sp. nov., is included in the present paper. This new species can be identified by having a single uninterrupted dark band on central thoracic segment III; 14 macrochaetae on abdominal segment I and seven on the posterior central abdominal segment IV (half segment); and very short bothriotricha on abdominal segments II–IV. It can be easily discriminated from similar species of Homidia by its colour pattern, chaetotaxy of the labium, and abdominal segments I and IV. The chaetotaxy of the first and second instar larvae of this new species and a key to four species of genus Homidia from Xizang are also provided.

Published
2022
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16. Analysis of the Amine Submetabolome Using Novel Isotope-Coded Pyrylium Salt Derivatization and LC-MS: Herbs and Cancer Tissues as Cases

Author

Liu, Li, primary, Bao, Geng-Yu, additional, Zhang, Shu-Sheng, additional, Qin, Yong, additional, Chen, Xiu-Ping, additional, Wang, Ming-Dan, additional, Zhu, Jian-Ping, additional, Yin, Hang, additional, Lin, Guo-Qiang, additional, Feng, Chen-Guo, additional, Zhang, Fang, additional, and Guo, Yin-Long, additional

Published
2022
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47. Highly Stereoselective Synthesis of 2,2‐Disubstituted Vinylphosphonates via Aryl to Vinyl 1,4‐Palladium Migration.

Author

Chen, Yan‐Zhen, Bao, Geng‐Yu, Zhan, Xin‐Chen, Fu, Jian‐Guo, Ji, Xiao‐Ming, Zhang, Shu‐Sheng, and Feng, Chen‐Guo

Subjects
MATERIALS science, PHOSPHINE oxides, PALLADIUM catalysts, CATALYST poisoning, CHEMICAL yield, PHOSPHINE
Abstract

Comprehensive Summary Vinylphosphates play an important role in the fields of synthetic chemistry, pharmaceuticals and material science. It is a long‐standing challenge to control the geometry of multi‐substituted vinylphosphates. Herein, an efficient method for the synthesis of 2,2‐disubstituted vinylphosphonates has been reported. The reaction proceeded via aryl to vinyl 1,4‐palladium migration progress, in which two difficulties that the deactivation of palladium catalyst by the coordination of excess secondary phosphine oxide and the competitive cross‐coupling to form arylphosphonates are successfully overcome. The judicious selection of phosphine ligand is the key to success. This protocol features excellent regio‐ and stereoselectivitiy, generally excellent reaction yields and broad substrate socpe. [ABSTRACT FROM AUTHOR]

Published
2022
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