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Zhou J, Wu JW, Song BL, Jiang Y, Niu QH, Li LF, Liu YJ. 5-HT1A receptors within the intermediate lateral septum modulate stress vulnerability in male mice. Prog Neuropsychopharmacol Biol Psychiatry 2024; 132:110966. [PMID: 38354893 DOI: 10.1016/j.pnpbp.2024.110966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 02/04/2024] [Accepted: 02/11/2024] [Indexed: 02/16/2024]
Abstract
Chronic stress is a major risk factor for psychiatric disorders. However, certain individuals may be at higher risk due to greater stress susceptibility. Elucidating the neurobiology of stress resilience and susceptibility may facilitate the development of novel strategies to prevent and treat stress-related disorders such as depression. Mounting evidence suggests that the serotonin (5-HT) system is a major regulator of stress sensitivity. In this study, we assessed the functions of 5-HT1A and 5-HT2A receptors within the lateral septum (LS) in regulating stress vulnerability. Among a group of male mice exposed to chronic social defeat stress (CSDS), 47.2% were classified as stress-susceptible, and these mice employed more passive coping strategies during the defeat and exhibited more severe anxiety- and depression-like behaviors during the following behavioral tests. These stress-susceptible mice also exhibited elevated neuronal activity in the LS as evidenced by greater c-Fos expression, greater activity of 5-HT neurons in both the dorsal and median raphe nucleus, and downregulated expression of the 5-HT1A receptor in the intermediate LS (LSi). Finally, we found the stress-induced social withdrawal symptoms could be rapidly relieved by LSi administration of 8-OH-DPAT, a 5-HT1A receptor agonist. These results indicate that 5-HT1A receptors within the LSi play an important role in stress vulnerability in mice. Therefore, modulation of stress vulnerable via 5-HT1A receptor activation in the LSi is a potential strategy to treat stress-related psychiatric disorders.
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Affiliation(s)
- Jie Zhou
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, China
| | - Jiao-Wen Wu
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, China
| | - Bai-Lin Song
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, China
| | - Yi Jiang
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, China
| | - Qiu-Hong Niu
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, China..
| | - Lai-Fu Li
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, China..
| | - Ying-Juan Liu
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, China..
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Hu XY, Hua ZW, Yao LG, Du L, Niu QH, Li YY, Yan L, Chen ZJ, Zhang H. [Effects of Combined Stress of High Density Polyethylene Microplastics and Chlorimuron-ethyl on Soybean Growth and Rhizosphere Bacterial Community]. Huan Jing Ke Xue 2024; 45:1161-1172. [PMID: 38471953 DOI: 10.13227/j.hjkx.202304023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
With the vigorous development of agriculture in China, plastic mulch film and pesticides are widely used in agricultural production. However, the accumulation of microplastics (formed by the degradation of plastic mulch film) and pesticides in soil has also caused many environmental problems. At present, the environmental biological effects of microplastics or pesticides have been reported, but there are few studies on the combined effects on crop growth and the rhizosphere soil bacterial community. Therefore, in this study, the high density polyethylene microplastics (HDPE, 500 mesh) were designed to be co-treated with sulfonylurea herbicide chlorimuron-ethyl to study their effects on soybean growth. In addition, the effects of the combined stress of HDPE and chlorimuron-ethyl on soybean rhizosphere soil bacterial community diversity, structure composition, microbial community network, and soil function were investigated using high-throughput sequencing technology, interaction network, and PICRUSt2 function analysis to clarify the combined toxicity of HDPE and chlorimuron-ethyl to soybean. The results showed that the half-life of chlorimuron-ethyl in soil was prolonged by the 1% HDPE treatment (from 11.5 d to 14.3 d), and the combined stress of HDPE and chlorimuron-ethyl had more obvious inhibition effects on soybean growth than that of the single pollutant or control. The HiSeq 2 500 sequencing showed that the rhizosphere bacterial community of soybean was composed of 20 phyla and 312 genera under combined stress, the number of phyla and genera was significantly less than that of the control and single pollutant treatment, and the relative abundances of bacteria with potential biological control and plant growth-promoting characteristics (such as Nocardioides and Sphingomonas) were reduced. Alpha diversity analysis showed that the combined stress significantly reduced the richness and diversity of the soybean rhizosphere bacterial community, and Beta diversity analysis showed that the combined stress significantly changed the structure of the bacterial community. The dominant flora of the rhizosphere bacterial community were regulated, and the abundances of secondary functional layers such as amino acid metabolism, energy metabolism, and lipid metabolism were reduced under combined stress by the analysis of LEfSe and PICRUSt2. It was inferred from the network analysis that the combined stress of HDPE and chlorimuron-ethyl reduced the total number of connections and network density of soil bacteria, simplified the network structure, and changed the important flora species to maintain the stability of the network. The results above indicated that the combined stress of HDPE and chlorimuron-ethyl significantly affected the growth of soybean and changed the rhizosphere bacterial community structure, soil function, and network structure. Compared with that of the single pollutant treatment, the potential risk of combined stress was greater. The results of this study can provide guidance for evaluating the ecological risks of polyethylene microplastics and chlorimuron-ethyl and for the remediation of contaminated soil.
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Affiliation(s)
- Xiao-Yue Hu
- School of Life Science and Agricultural Engineering, Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, Henan Province Artemisiae argyi Development and Utilization Engineering Technology Research Center, Innovation Center of Water Security for Water Source Region of Mid-Route Project of SouthNorth Water Diversion of Henan Province, Nanyang Normal University, Nanyang 473061, China
| | - Zi-Wei Hua
- School of Life Science and Agricultural Engineering, Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, Henan Province Artemisiae argyi Development and Utilization Engineering Technology Research Center, Innovation Center of Water Security for Water Source Region of Mid-Route Project of SouthNorth Water Diversion of Henan Province, Nanyang Normal University, Nanyang 473061, China
| | - Lun-Guang Yao
- School of Life Science and Agricultural Engineering, Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, Henan Province Artemisiae argyi Development and Utilization Engineering Technology Research Center, Innovation Center of Water Security for Water Source Region of Mid-Route Project of SouthNorth Water Diversion of Henan Province, Nanyang Normal University, Nanyang 473061, China
| | - Li Du
- School of Water Resources and Environmental Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Qiu-Hong Niu
- School of Life Science and Agricultural Engineering, Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, Henan Province Artemisiae argyi Development and Utilization Engineering Technology Research Center, Innovation Center of Water Security for Water Source Region of Mid-Route Project of SouthNorth Water Diversion of Henan Province, Nanyang Normal University, Nanyang 473061, China
| | - Yu-Ying Li
- School of Water Resources and Environmental Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Lu Yan
- School of Water Resources and Environmental Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Zhao-Jin Chen
- School of Water Resources and Environmental Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Hao Zhang
- School of Life Science and Agricultural Engineering, Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, Henan Province Artemisiae argyi Development and Utilization Engineering Technology Research Center, Innovation Center of Water Security for Water Source Region of Mid-Route Project of SouthNorth Water Diversion of Henan Province, Nanyang Normal University, Nanyang 473061, China
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Chai CY, Ke T, Niu QH, Hui FL. Diversity of Wickerhamomyces (Wickerhamomycetaceae, Saccharomycetales) in China with the description of four new species. Front Microbiol 2024; 15:1338231. [PMID: 38389540 PMCID: PMC10881795 DOI: 10.3389/fmicb.2024.1338231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/15/2024] [Indexed: 02/24/2024] Open
Abstract
Wickerhamomyces is a well-known genus of the family Wickerhamomycetaceae in the class Ascomycetes. These fungi can survive in a variety of substrates and environments and perform many valuable roles in both industrial processes and the natural ecosystems. During our investigation of yeast diversity associated with plant materials, 53 Wickerhamomyces isolates were obtained from rotting wood and plant leaves collected in Fujian, Guizhou, Henan, and Yunnan Provinces of China. Isolates were identified as 14 Wickerhamomyces species, including 1 species known previously to occur in China (W. anomalus), 9 new record species in China (W. arborarius, W. ciferrii, W. edaphicus, W. lynferdii, W. pijperi, W. subpelliculosa, W. xylosica, W. strasburgensis, and W. sydowiorum), and 4 novel species (W. guiyangensis sp. nov., W. paramyanmarensis sp. nov., W. quanzhouensis sp. nov., and W. phyllophilus sp. nov.). This study presents a detailed account of these new species, illustrating their morphology and analyzing their phylogenetic relationships with other Wickerhamomyces species. Our study is the first comprehensive study on Wickerhamomyces species associated with plant materials from tropical and subtropical China. The results of this study update our understanding of the phylogenetic relationships, systematics, and ecology of Wickerhamomyces.
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Affiliation(s)
- Chun-Yue Chai
- School of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang, China
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, Nanyang Normal University, Nanyang, China
| | - Tao Ke
- School of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang, China
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, Nanyang Normal University, Nanyang, China
| | - Qiu-Hong Niu
- School of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang, China
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, Nanyang Normal University, Nanyang, China
| | - Feng-Li Hui
- School of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang, China
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, Nanyang Normal University, Nanyang, China
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Li LF, Zou HW, Song BL, Wang Y, Jiang Y, Li ZL, Niu QH, Liu YJ. Increased Lactobacillus abundance contributes to stress resilience in mice exposed to chronic social defeat stress. Neuroendocrinology 2022; 113:563-576. [PMID: 36587608 DOI: 10.1159/000528876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 12/19/2022] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Accumulating evidence indicates that abnormalities in the composition of gastrointestinal (GI) microbiota play a vital role in stress-related disorders. Both human beings and animals perceive stressful events differently, i.e., resilience or susceptibility. However, the role of GI microbiota in stress resilience/susceptibility and the underlying mechanisms remain largely unknown. METHODS & RESULTS Sixty male C57BL/6J mice were exposed to 10-day chronic social defeat stress (CSDS), and 28 were found to be resilient to CSDS. We next analyzed microbiota compositions in the cecum using 16S rDNA gene sequencing, which revealed a significant increase in the relative abundance of Lactobacillus at the genus level in the resilient mice. In subsequent experiments, we found that oral administration of a strain of Lactobacillus (Lactobacillus murinus) for 2 weeks attenuated the increased levels of stress-induced corticosterone and anxiety-like behavior in stress-susceptible mice. The mRNA expression of tryptophan hydroxylase 2 (a rate-limiting enzyme in 5-HT synthesis) was also significantly increased in the dorsal raphe nucleus (DR) of stress-susceptible mice. CONCLUSIONS Lactobacillus contributes to stress resilience, and the DR 5-HT system may play an important role during this process. The above results suggest that certain organisms in the GI tract may play an essential role in stress response and be useful in the prevention and treatment of some stress-related psychiatric disorders, such as depression.
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Affiliation(s)
- Lai-Fu Li
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, China
| | - Hua-Wei Zou
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, China
| | - Bai-Lin Song
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, China
| | - Yan Wang
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, China
| | - Yi Jiang
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, China
| | - Zi-Lin Li
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, China
| | - Qiu-Hong Niu
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, China
| | - Ying-Juan Liu
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang, China
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Wei XY, Zhu HY, Song L, Zhang RP, Li AH, Niu QH, Liu XZ, Bai FY. Yeast Diversity in the Qaidam Basin Desert in China with the Description of Five New Yeast Species. J Fungi (Basel) 2022; 8:jof8080858. [PMID: 36012846 PMCID: PMC9409814 DOI: 10.3390/jof8080858] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 11/18/2022] Open
Abstract
The Qaidam Basin is the highest and one of the largest and driest deserts on Earth. It is considered a mars analog area in China. In contrast to numerous studies concerning its geology, geophysical, and chemistry, relatively few studies have reported microbial diversity and distribution in this area. Here, we investigated culturable yeast diversity in the northeast Qaidam Basin. A total of 194 yeast strains were isolated, and 12 genera and 21 species were identified, among which 19 were basidiomycetous yeasts. Naganishia albida, N. adeliensis, and Filobasidium magnum were the three most dominant species and were distributed in thirteen samples from eight locations. Five new species (Filobasidium chaidanensis, Kondoa globosum, Symmetrospora salmoneus, Teunia nitrariae, and Vishniacozyma pseudodimennae) were found and described based on ITS and D1D2 gene loci together with phenotypic characteristics and physiochemical analysis. Representative strains from each species were chosen for the salt-tolerant test, in which species showed different responses to different levels of NaCl concentrations. Further, the strain from soil can adapt well to the higher salt stress compared to those from plants or lichens. Our study represents the first report of the yeast diversity in the Qaidam Basin, including five new species, and also provides further information on the halotolerance of yeasts from the saline environment in mars analog.
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Affiliation(s)
- Xu-Yang Wei
- College of Life Science and Agricultural Engineering, Nanyang Normal University, 1638 Wolong Road, Nanyang 473061, China
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Hai-Yan Zhu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, No.19 (A) Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Liang Song
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Ri-Peng Zhang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, No.19 (A) Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Ai-Hua Li
- China General Microbiological Culture Collection Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Qiu-Hong Niu
- College of Life Science and Agricultural Engineering, Nanyang Normal University, 1638 Wolong Road, Nanyang 473061, China
| | - Xin-Zhan Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- Correspondence: (X.-Z.L.); (F.-Y.B.)
| | - Feng-Yan Bai
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- Correspondence: (X.-Z.L.); (F.-Y.B.)
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Zhang H, Chen QF, Shang N, Li N, Niu QH, Hong Q, Huang X. The enhanced mechanisms of Hansschlegelia zhihuaiae S113 degrading bensulfuron-methyl in maize rhizosphere by three organic acids in root exudates. Ecotoxicol Environ Saf 2021; 223:112622. [PMID: 34390985 DOI: 10.1016/j.ecoenv.2021.112622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 06/30/2021] [Accepted: 08/08/2021] [Indexed: 06/13/2023]
Abstract
The residues of bensulfuron-methyl (BSM), a sulfonylurea herbicide, in soil have caused serious damage to the rotation of susceptible crops. Many studies have reported that the removal of BSM in soil was achieved by adding degrading bacteria. However, the mechanisms used by bacteria to degrade BSM in the crop rhizosphere remain unclear. In this study, a BSM-degrading bacterium, Hansschlegelia zhihuaiae S113, was applied to investigate the enhancement of effects mediated by organic acids during the bioremediation of BSM-contaminated maize rhizosphere soil. Organic acids, such as L-malic acid, tartaric acid, and fumaric acid, identified in maize root exudates, significantly stimulated the expression of cheA, which encoded the histidine kinase in strain S113 and contributed to the chemotactic response. This process accelerated the accumulation of strain S113 around the maize roots and promoted the colonization process on maize roots. The growth of strain S113 was significantly increased by L-malic acid but not tartaric acid or fumaric acid. After the S113 suspension was root-irrigated to BSM-contaminated soil, the density of strain S113 colonizing root surfaces and in rhizosphere soil reached 1.1 × 104 cells/g for roots and 4.9 × 104 cells/g in dry soil at 15 d, leading to 80.9% BSM degradation efficiency. The treatment with the addition of a mixture of S113 and L-malic acid completely degraded BSM in rhizosphere soil due to the strong attraction and growth promotion of strain S113 by L-malic acid, with a higher efficiency than that with the extra addition of fumaric acid (89.7%) or tartaric acid (87.0%). This paper revealed the enhancement effects of organic acids identified in root exudates for the in situ bioremediation of BSM-contaminated rhizosphere soil.
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Affiliation(s)
- Hao Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China; College of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China
| | - Qi-Feng Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Na Shang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Na Li
- College of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China
| | - Qiu-Hong Niu
- College of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China
| | - Qing Hong
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Xing Huang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
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Niu QH, Cheng JL, Song XQ, Yang L, Chu CY, Liu H, Zhang LF, Li Y, Li YH. [Correlation between the clinical symptoms and the activation pattern of brain neurons in patients with obsessive-compulsive disorder]. Zhonghua Yi Xue Za Zhi 2017; 97:1290-1294. [PMID: 28482427 DOI: 10.3760/cma.j.issn.0376-2491.2017.17.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the correlation between clinical symptoms of patients with obsessive-compulsive disorder (OCD) and the activation pattern of brain neurons at resting. Methods: A total of 26 patients diagnosed with fist-episode OCD were selected and underwent functional magnetic resonance imaging (fMRI) scanning at resting state. The fMRI data were processed by statistical parametric mapping (SPM8), Data Processing Assistant for Resting-State fMRI Analysis Toolkit (DPARSFA), and Resting State fMRI Data Analysis Toolkit (REST) software. With age as concomitant variable, Pearson Correlation Analysis was adopted to study the correlation between clinical symptoms (obsessive thoughts and compulsive behavior) of patients and their regional homogeneity ( ReHo) values of whole brain. Results: The positive correlation between obsessive thoughts score of patients with OCD and ReHo value lied in insular_L, insular_R, cerebellum_L, cerebellum_R, calcarine_L, cuneus_L. The negative correlation between obsessive thoughts score of patients with OCD and ReHo value lied in thalamus_L, precuneus_L, caudate_L, cingulum_R, frontal_R. The positive correlation between compulsive behavior score of patients with OCD and ReHo value lied in temporal_L, frontal_inf_orb_l, frontal_inf_orb_R, frontal_mid_L, precentral_R. The negative correlation between compulsive behavior score of patients with OCD and ReHo value lied in cingulum-L, cingulum-R, caudate_L. Conclusion: Different obsessive-compulsive symptoms has different image foundation, and the dysfunction of cingulate has a major impact on the incidence of both obsessive thoughts and compulsive behavior of OCD patients.
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Affiliation(s)
- Q H Niu
- Department of Psychiatry, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Hui FL, Chen L, Chu XY, Niu QH, Ke T. Wickerhamomyces mori sp. nov., an anamorphic yeast species found in the guts of wood-boring insect larvae. Int J Syst Evol Microbiol 2013; 63:1174-1178. [DOI: 10.1099/ijs.0.048637-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel anamorphic yeast species is described to accommodate three isolates recovered from the guts of three different wood-boring insect larvae collected in Henan, central China. On the basis of sequence analyses of the D1/D2 domains of the large-subunit rRNA gene and the internal transcribed spacer regions, the three strains are assigned to a novel species of the genus Wickerhamomyces, although the formation of ascospores was not observed. These strains also exhibited a number of distinct morphological and physiological characteristics that clearly differentiated them from Wickerhamomyces mucosus, Candida odintsovae and Wickerhamomyces rabaulensis, the most closely related species. In view of the phenotypic differences and unique rRNA gene sequences, we consider that these three isolates represent a novel species of the genus Wickerhamomyces, Wickerhamomyces mori sp. nov. The type strain is NYNU 1216T ( = CICC 1983T = CBS 12678T).
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Affiliation(s)
- Feng-Li Hui
- College of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Liang Chen
- College of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Xue-Ying Chu
- College of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Qiu-Hong Niu
- College of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Tao Ke
- College of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
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Hui FL, Chen L, Li ZH, Niu QH, Ke T. Metschnikowia henanensis sp. nov., a new anamorphic yeast species isolated from rotten wood in China. Antonie van Leeuwenhoek 2013; 103:899-904. [DOI: 10.1007/s10482-012-9871-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2012] [Accepted: 12/22/2012] [Indexed: 11/30/2022]
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Niu QH, Huang X, Hui F, Huang S, Ke T, Zhang KQ, Zhang L. Colonization of Caenorhabditis elegans by Bacillus nematocida B16, a Bacterial Opportunistic Pathogen. J Mol Microbiol Biotechnol 2012; 22:258-67. [PMID: 23037141 DOI: 10.1159/000342911] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Qiu-Hong Niu
- Department of Life Science and Biotechnology, Nanyang Normal University, Nanyang, PR China
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Hui FL, Niu QH, Ke T, Liu Z. Candida ficus sp. nov., a novel yeast species from the gut of Apriona germari larvae. Int J Syst Evol Microbiol 2012; 62:2805-2809. [PMID: 22729023 DOI: 10.1099/ijs.0.044214-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel yeast species is described based on three strains from the gut of wood-boring larvae collected in a tree trunk of Ficus carica cultivated in parks near Nanyang, central China. Phylogenetic analysis based on sequences of the D1/D2 domains of the large subunit rRNA gene showed that these strains occurred in a separate clade that was genetically distinct from all known ascomycetous yeasts. In terms of pairwise sequence divergence, the novel strains differed by 15.3% divergence from the type strain of Pichia terricola, and by 15.8% divergence from the type strains of Pichia exigua and Candida rugopelliculosa in the D1/D2 domains. All three are ascomycetous yeasts in the Pichia clade. Unlike P. terricola, P. exigua and C. rugopelliculosa, the novel isolates did not ferment glucose. The name Candida ficus sp. nov. is proposed to accommodate these highly divergent organisms, with STN-8(T) (=CICC 1980(T)=CBS 12638(T)) as the type strain.
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Affiliation(s)
- Feng-Li Hui
- College of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Qiu-Hong Niu
- College of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Tao Ke
- College of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
| | - Zheng Liu
- College of Life Science and Technology, Nanyang Normal University, Nanyang 473061, PR China
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Hui FL, Ke T, Niu QH, Du PC. Candida baotianensis sp. nov., an ascomycetous yeast species from forest soil in China. J GEN APPL MICROBIOL 2012; 58:59-63. [DOI: 10.2323/jgam.58.59] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Huang XW, Niu QH, Zhou W, Zhang KQ. Bacillus nematocida sp. nov., a novel bacterial strain with nematotoxic activity isolated from soil in Yunnan, China. Syst Appl Microbiol 2005; 28:323-7. [PMID: 15997705 DOI: 10.1016/j.syapm.2005.01.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
An endospore-forming bacterium, designated strain B-16T, was isolated from a forest soil sample in Yunnan, China. The isolate presented remarkable nematotoxic activity against nematode Panagrellus redivivus. The organism was strictly aerobic, motile, spore forming and rod shaped, catalase- and oxidase-positive. The predominant isoprenoid quinone was menaquinone 7 (MK-7). The major cellular fatty acid profiles were anteiso-C15:0 (48.67%), iso-C15:0 (13.45%), C16:0 (9.06%) and anteiso-Cl7:0 (8.29%). The DNA G+C content was 46%. Phylogenetic analyses based on 16S rDNA sequence revealed that isolate belongs to the genus Bacillus. Strain B-16T exhibited high 16S rDNA similarity with its closest neighbors Bacillus vallismortis (99.79%), B. subtilis (99.43%), B. atrophaeus (99.43%), B. amyloliquefaciens (99.36%), B. licheniformis (98.0%) and less than 97.0% with all the other relative type strains in the genus Bacillus. The phenotypic and genotypic characteristics and DNA-DNA relatedness data indicate that strain B-16T should be distinguished from all the relative species of genus Bacillus. Therefore, on the basis of the polyphasic taxonomic data presented, a new species of the genus Bacillus, B. nematocida, with the type strain B-16T ( = CGMCC 1128T) is proposed. The GenBank accession number for the sequence reported in this paper is AY820954.
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Affiliation(s)
- Xiao-Wei Huang
- Laboratory for Conservation and Utilization of Bio-Resources, Yunnan University, Kunming, Yunnan 650091, P.R. China
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