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Jing T, Wu Y, Yu Y, Li J, Mu X, Xu L, Wang X, Qi G, Tang J, Wang D, Yang S, Hua J, Gou M. Copine proteins are required for brassinosteroid signaling in maize and Arabidopsis. Nat Commun 2024; 15:2028. [PMID: 38459051 PMCID: PMC10923931 DOI: 10.1038/s41467-024-46289-6] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 02/21/2024] [Indexed: 03/10/2024] Open
Abstract
Copine proteins are highly conserved and ubiquitously found in eukaryotes, and their indispensable roles in different species were proposed. However, their exact function remains unclear. The phytohormone brassinosteroids (BRs) play vital roles in plant growth, development and environmental responses. A key event in effective BR signaling is the formation of functional BRI1-SERK receptor complex and subsequent transphosphorylation upon ligand binding. Here, we demonstrate that BONZAI (BON) proteins, which are plasma membrane-associated copine proteins, are critical components of BR signaling in both the monocot maize and the dicot Arabidopsis. Biochemical and molecular analyses reveal that BON proteins directly interact with SERK kinases, thereby ensuring effective BRI1-SERK interaction and transphosphorylation. This study advances the knowledge on BR signaling and provides an important target for optimizing valuable agronomic traits, it also opens a way to study steroid hormone signaling and copine proteins of eukaryotes in a broader perspective.
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Affiliation(s)
- Teng Jing
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou, Henan, China
| | - Yuying Wu
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou, Henan, China
| | - Yanwen Yu
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou, Henan, China
| | - Jiankun Li
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou, Henan, China
| | - Xiaohuan Mu
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou, Henan, China
| | - Liping Xu
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou, Henan, China
| | - Xi Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing, China
| | - Guang Qi
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou, Henan, China
| | - Jihua Tang
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou, Henan, China
- The Shennong Laboratory, Zhengzhou, Henan, China
| | - Daowen Wang
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou, Henan, China
| | - Shuhua Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing, China
| | - Jian Hua
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA
| | - Mingyue Gou
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou, Henan, China.
- The Shennong Laboratory, Zhengzhou, Henan, China.
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Zhao L, Yang ZC, Zhou JH, Wang GQ, Yin QL, Zhao J, Qi G, Yuan ZQ. [Community structure and species composition of typical Quercus variabilis natural secondary forest at the northern foothills of the Qinling Mountains, China]. Ying Yong Sheng Tai Xue Bao 2023; 34:3214-3222. [PMID: 38511359 DOI: 10.13287/j.1001-9332.202312.001] [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] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
We investigated species composition and community structure of a typical Quercus variabilis natural secondary forest in the northern foothills of the Qinling Mountains, within the dynamic monitoring plot of deciduous broad-leaved forest at the Louguantai experimental forest farm in Zhouzhi County, Shaanxi Province. The results showed that there were 3162 individual woody plants with diameter at breast height ≥1 cm in the plot, which were belonged to 42 species, 36 genera, and 25 families. The community genus's areal type was dominated by the temperate component, which accounted for 44.4%, and followed by the tropical component. The community was dominated by several tree species. The top three species with respect to importance value were Q. variabilis, Pinus tabuliformis, and Quercus aliena, with the sum of their importance value being 64.7%. The average DBH of all woody plants was 7.58 cm. The distribution of all individuals and dominant species in the tree layer was approximately normal, with more medium-size individuals. The community structure was stable. The community was poorly renewed, with a trend of population decline. Biodiversity indices varied considerably among different plots, being lower than those of subtropical broad-leaved evergreen forests. There was a significant correlation between community species distribution and environmental factors. Soil and topography explained 42.4% of the variation in community distribution. Altitude and soil alkali hydrolysable nitrogen had a significant effect on community distribution. Altitude, soil total phosphorus, and organic matter content significantly affected the species diversity of Q. variabilis communities. The stronger adaptability of Q. variabilis populations allowed them to become dominant in low-nutrient environments, which limited species diversity in the community.
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Affiliation(s)
- Liang Zhao
- Louguantai National Experimental Forest Farm in Shaanxi Province, Zhouzhi 710400, Shaanxi, China
| | - Zhi-Chun Yang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710072, China
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, Xi'an 710129, China
| | - Juan-Hua Zhou
- Louguantai National Experimental Forest Farm in Shaanxi Province, Zhouzhi 710400, Shaanxi, China
| | - Guo-Qiang Wang
- Louguantai National Experimental Forest Farm in Shaanxi Province, Zhouzhi 710400, Shaanxi, China
| | - Qiu-Long Yin
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710072, China
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, Xi'an 710129, China
| | - Jin Zhao
- Forestry Workstation in Chang'an District, Xi'an 710100, China
| | - Guang Qi
- School of Chemical and Environmental Engineering, Pingdingshan University, Pingdingshan 467000, Henan, China
| | - Zuo-Qiang Yuan
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710072, China
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, Xi'an 710129, China
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Wang K, Zhai M, Cui D, Han R, Wang X, Xu W, Qi G, Zeng X, Zhuang Y, Liu C. Genome-Wide Analysis of the Amino Acid Permeases Gene Family in Wheat and TaAAP1 Enhanced Salt Tolerance by Accumulating Ethylene. Int J Mol Sci 2023; 24:13800. [PMID: 37762108 PMCID: PMC10530925 DOI: 10.3390/ijms241813800] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 08/28/2023] [Accepted: 09/02/2023] [Indexed: 09/29/2023] Open
Abstract
Amino acid permeases (AAPs) are proteins of the integral membrane that play important roles in plant growth, development, and responses to various stresses. The molecular functions of several AAPs were characterized in Arabidopsis and rice, but there is still limited information on wheat. Here, we identified 51 AAP genes (TaAAPs) in the wheat genome, classified into six groups based on phylogenetic and protein structures. The chromosome location and gene duplication analysis showed that gene duplication events played a crucial role in the expansion of the TaAAPs gene family. Collinearity relationship analysis revealed several orthologous AAPs between wheat and other species. Moreover, cis-element analysis of promoter regions and transcriptome data suggested that the TaAAPs can respond to salt stress. A TaAAP1 gene was selected and transformed in wheat. Overexpressing TaAAP1 enhanced salt tolerance by increasing the expression of ethylene synthesis genes (TaACS6/TaACS7/TaACS8) and accumulating more ethylene. The present study provides an overview of the AAP family in the wheat genome as well as information on systematics, phylogenetics, and gene duplication, and shows that overexpressing TaAAP1 enhances salt tolerance by regulating ethylene production. These results serve as a theoretical foundation for further functional studies on TaAAPs in the future.
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Affiliation(s)
- Kai Wang
- Crop Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize/Shandong Technology Innovation Center of Wheat, Jinan 252100, China; (K.W.); (D.C.); (R.H.); (X.W.); (W.X.); (G.Q.); (X.Z.); (Y.Z.)
| | - Mingjuan Zhai
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
| | - Dezhou Cui
- Crop Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize/Shandong Technology Innovation Center of Wheat, Jinan 252100, China; (K.W.); (D.C.); (R.H.); (X.W.); (W.X.); (G.Q.); (X.Z.); (Y.Z.)
| | - Ran Han
- Crop Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize/Shandong Technology Innovation Center of Wheat, Jinan 252100, China; (K.W.); (D.C.); (R.H.); (X.W.); (W.X.); (G.Q.); (X.Z.); (Y.Z.)
| | - Xiaolu Wang
- Crop Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize/Shandong Technology Innovation Center of Wheat, Jinan 252100, China; (K.W.); (D.C.); (R.H.); (X.W.); (W.X.); (G.Q.); (X.Z.); (Y.Z.)
| | - Wenjing Xu
- Crop Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize/Shandong Technology Innovation Center of Wheat, Jinan 252100, China; (K.W.); (D.C.); (R.H.); (X.W.); (W.X.); (G.Q.); (X.Z.); (Y.Z.)
| | - Guang Qi
- Crop Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize/Shandong Technology Innovation Center of Wheat, Jinan 252100, China; (K.W.); (D.C.); (R.H.); (X.W.); (W.X.); (G.Q.); (X.Z.); (Y.Z.)
| | - Xiaoxue Zeng
- Crop Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize/Shandong Technology Innovation Center of Wheat, Jinan 252100, China; (K.W.); (D.C.); (R.H.); (X.W.); (W.X.); (G.Q.); (X.Z.); (Y.Z.)
| | - Yamei Zhuang
- Crop Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize/Shandong Technology Innovation Center of Wheat, Jinan 252100, China; (K.W.); (D.C.); (R.H.); (X.W.); (W.X.); (G.Q.); (X.Z.); (Y.Z.)
| | - Cheng Liu
- Crop Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize/Shandong Technology Innovation Center of Wheat, Jinan 252100, China; (K.W.); (D.C.); (R.H.); (X.W.); (W.X.); (G.Q.); (X.Z.); (Y.Z.)
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Xu W, Xu X, Han R, Wang X, Wang K, Qi G, Ma P, Komatsuda T, Liu C. Integrated transcriptome and metabolome analysis reveals that flavonoids function in wheat resistance to powdery mildew. Front Plant Sci 2023; 14:1125194. [PMID: 36818890 PMCID: PMC9929363 DOI: 10.3389/fpls.2023.1125194] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 01/13/2023] [Indexed: 06/01/2023]
Abstract
Powdery mildew is a fungal disease devastating to wheat, causing significant quality and yield loss. Flavonoids are important secondary plant metabolites that confer resistance to biotic and abiotic stress. However, whether they play a role in powdery mildew resistance in wheat has yet to be explored. In the present study, we combined transcriptome and metabolome analyses to compare differentially expressed genes (DEGs) and differentially accumulated flavonoids identified in plants with and without powdery mildew inoculation. Transcriptome analysis identified 4,329 DEGs in susceptible wheat cv. Jimai229, and 8,493 in resistant cv. HHG46. The DEGs were functionally enriched using Gene Ontology and Kyoto Encyclopedia of Genes and Genomes, revealing the flavonoid synthesis pathway as the most significant in both cultivars. This was consistent with the upregulation of flavonoid synthesis pathway genes observed by quantitative PCR. Metabolome analysis indicated flavone and flavonol biosynthesis pathways as the most significantly enriched following powdery mildew inoculation. An accumulation of total flavonoids content was also found to be induced by powdery mildew infection. Exogenous flavonoids treatment of inoculated plants led to less severe infection, with fewer and smaller powdery mildew spots on the wheat leaves. This reduction is speculated to be regulated through malondialdehyde content and the activities of peroxidase and catalase. Our study provides a fundamental theory for further exploration of the potential of flavonoids as biological prevention and control agents against powdery mildew in wheat.
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Affiliation(s)
- Wenjing Xu
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
- National Engineering Laboratory of Wheat and Maize, Jinan, Shandong, China
- Key Laboratory of Wheat Biology and Genetic Improvement in the North Huang and Huai River Valley of Ministry of Agriculture, Jinan, Shandong, China
- Shandong Wheat Technology Innovation Center, Jinan, Shandong, China
| | - Xiaoyi Xu
- School of Life Sciences, Yantai University, Yantai, Shandong, China
| | - Ran Han
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
- National Engineering Laboratory of Wheat and Maize, Jinan, Shandong, China
- Key Laboratory of Wheat Biology and Genetic Improvement in the North Huang and Huai River Valley of Ministry of Agriculture, Jinan, Shandong, China
- Shandong Wheat Technology Innovation Center, Jinan, Shandong, China
| | - Xiaolu Wang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
- National Engineering Laboratory of Wheat and Maize, Jinan, Shandong, China
- Key Laboratory of Wheat Biology and Genetic Improvement in the North Huang and Huai River Valley of Ministry of Agriculture, Jinan, Shandong, China
- Shandong Wheat Technology Innovation Center, Jinan, Shandong, China
| | - Kai Wang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
- National Engineering Laboratory of Wheat and Maize, Jinan, Shandong, China
- Key Laboratory of Wheat Biology and Genetic Improvement in the North Huang and Huai River Valley of Ministry of Agriculture, Jinan, Shandong, China
- Shandong Wheat Technology Innovation Center, Jinan, Shandong, China
| | - Guang Qi
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
- National Engineering Laboratory of Wheat and Maize, Jinan, Shandong, China
- Key Laboratory of Wheat Biology and Genetic Improvement in the North Huang and Huai River Valley of Ministry of Agriculture, Jinan, Shandong, China
- Shandong Wheat Technology Innovation Center, Jinan, Shandong, China
| | - Pengtao Ma
- School of Life Sciences, Yantai University, Yantai, Shandong, China
| | - Takao Komatsuda
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
- National Engineering Laboratory of Wheat and Maize, Jinan, Shandong, China
- Key Laboratory of Wheat Biology and Genetic Improvement in the North Huang and Huai River Valley of Ministry of Agriculture, Jinan, Shandong, China
- Shandong Wheat Technology Innovation Center, Jinan, Shandong, China
| | - Cheng Liu
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
- National Engineering Laboratory of Wheat and Maize, Jinan, Shandong, China
- Key Laboratory of Wheat Biology and Genetic Improvement in the North Huang and Huai River Valley of Ministry of Agriculture, Jinan, Shandong, China
- Shandong Wheat Technology Innovation Center, Jinan, Shandong, China
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Chai G, Qi G, Wang D, Zhuang Y, Xu H, Bai Z, Bai MY, Hu R, Wang ZY, Zhou G, Kong Y. The CCCH zinc finger protein C3H15 negatively regulates cell elongation by inhibiting brassinosteroid signaling. Plant Physiol 2022; 189:285-300. [PMID: 35139225 PMCID: PMC9070797 DOI: 10.1093/plphys/kiac046] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 01/10/2022] [Indexed: 05/20/2023]
Abstract
Plant CCCH proteins participate in the control of multiple developmental and adaptive processes, but the regulatory mechanisms underlying these processes are not well known. In this study, we showed that the Arabidopsis (Arabidopsis thaliana) CCCH protein C3H15 negatively regulates cell elongation by inhibiting brassinosteroid (BR) signaling. Genetic and biochemical evidence showed that C3H15 functions downstream of the receptor BR INSENSITIVE 1 (BRI1) as a negative regulator in the BR pathway. C3H15 is phosphorylated by the GLYCOGEN SYNTHASE KINASE 3 -like kinase BR-INSENSITIVE 2 (BIN2) at Ser111 in the cytoplasm in the absence of BRs. Upon BR perception, C3H15 transcription is enhanced, and the phosphorylation of C3H15 by BIN2 is reduced. The dephosphorylated C3H15 protein accumulates in the nucleus, where C3H15 regulates transcription via G-rich elements (typically GGGAGA). C3H15 and BRASSINAZOLE RESISTANT 1 (BZR1)/BRI1-EMS-SUPPRESSOR 1 (BES1), two central transcriptional regulators of BR signaling, directly suppress each other and share a number of BR-responsive target genes. Moreover, C3H15 antagonizes BZR1 and BES1 to regulate the expression of their shared cell elongation-associated target gene, SMALL AUXIN-UP RNA 15 (SAUR15). This study demonstrates that C3H15-mediated BR signaling may be parallel to, or even attenuate, the dominant BZR1 and BES1 signaling pathways to control cell elongation. This finding expands our understanding of the regulatory mechanisms underlying BR-induced cell elongation in plants.
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Affiliation(s)
| | | | | | | | - Hua Xu
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Zetao Bai
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Ming-Yi Bai
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Sciences, Shandong University, Jinan 250100, China
| | - Ruibo Hu
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Zeng-yu Wang
- College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China
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Zhuang Y, Lian W, Tang X, Qi G, Wang D, Chai G, Zhou G. MYB42 inhibits hypocotyl cell elongation by coordinating brassinosteroid homeostasis and signalling in Arabidopsis thaliana. Ann Bot 2022; 129:403-413. [PMID: 34922335 PMCID: PMC8944714 DOI: 10.1093/aob/mcab152] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND AND AIMS The precise control of brassinosteroid (BR) homeostasis and signalling is a prerequisite for hypocotyl cell elongation in plants. Arabidopsis MYB42 and its paralogue MYB85 were previously identified to be positive regulators of secondary cell wall formation during mature stages. Here, we aim to reveal the role of MYB42 and MYB85 in hypocotyl elongation during the seedling stage and clarify how MYB42 coordinates BR homeostasis and signalling to regulate this process. METHODS Histochemical analysis of proMYB42-GUS transgenic plants was used for determination of the MYB42 expression pattern. The MYB42, 85 overexpression, double mutant and some crossing lines were generated for phenotypic observation and transcriptome analysis. Transcription activation assays, quantitative PCR (qPCR), chromatin immunoprecipitation (ChIP)-qPCR and electrophoretic mobility shift assays (EMSAs) were conducted to determine the relationship of MYB42 and BRASSINAZOLE-RESISTANT 1 (BZR1), a master switch activating BR signalling. KEY RESULTS MYB42 and MYB85 redundantly and negatively regulate hypocotyl cell elongation. They function in hypocotyl elongation by mediating BR signalling. MYB42 transcription was suppressed by BR treatment or in bzr1-1D (a gain-of-function mutant of BZR1), and mutation of both MYB42 and MYB85 enhanced the dwarf phenotype of the BR receptor mutant bri1-5. BZR1 directly repressed MYB42 expression in response to BR. Consistently, hypocotyl length of bzr1-1D was increased by simultaneous mutation of MYB42 and MYB85, but was reduced by overexpression of MYB42. Expression of a number of BR-regulated BZR1 (non-)targets associated with hypocotyl elongation was suppressed by MYB42, 85. Furthermore, MYB42 enlarged its action in BR signalling through feedback repression of BR accumulation and activation of DOGT1/UGT73C5, a BR-inactivating enzyme. CONCLUSIONS MYB42 inhibits hypocotyl elongation by coordinating BR homeostasis and signalling during primary growth. The present study shows an MYB42, 85-mediated multilevel system that contributes to fine regulation of BR-induced hypocotyl elongation.
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Affiliation(s)
- Yamei Zhuang
- College of Resources and Environment, Qingdao Agricultural University, Qingdao, China
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Wenjun Lian
- College of Resources and Environment, Qingdao Agricultural University, Qingdao, China
| | - Xianfeng Tang
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Guang Qi
- State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Dian Wang
- College of Agronomy, Qingdao Agricultural University, Qingdao, China
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Qi G, Chen H, Wang D, Zheng H, Tang X, Guo Z, Cheng J, Chen J, Wang Y, Bai MY, Liu F, Wang D, Fu ZQ. The BZR1-EDS1 module regulates plant growth-defense coordination. Mol Plant 2021; 14:2072-2087. [PMID: 34416351 DOI: 10.1016/j.molp.2021.08.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 12/07/2020] [Revised: 02/07/2021] [Accepted: 08/12/2021] [Indexed: 05/13/2023]
Abstract
Plants have developed sophisticated strategies to coordinate growth and immunity, but our understanding of the underlying mechanism remains limited. In this study, we identified a novel molecular module that regulates plant growth and defense in both compatible and incompatible infections. This module consisted of BZR1, a key transcription factor in brassinosteroid (BR) signaling, and EDS1, an essential positive regulator of plant innate immunity. We found that EDS1 interacts with BZR1 and suppresses its transcriptional activities. Consistently, upregulation of EDS1 function by a virulent Pseudomonas syringae strain or salicylic acid treatment inhibited BZR1-regulated expression of BR-responsive genes and BR-promoted growth. Furthermore, we showed that the cytoplasmic fraction of BZR1 positively regulates effector-triggered immunity (ETI) controlled by the TIR-NB-LRR protein RPS4, which is attenuated by BZR1's nuclear translocation. Mechanistically, cytoplasmic BZR1 facilitated AvrRps4-triggered dissociation of EDS1 and RPS4 by binding to EDS1, thus leading to efficient activation of RPS4-controlled ETI. Notably, transgenic expression of a mutant BZR1 that accumulates exclusively in the cytoplasm improved pathogen resistance without compromising plant growth. Collectively, these results shed new light on plant growth-defense coordination and reveal a previously unknown function for the cytoplasmic fraction of BZR1. The BZR1-EDS1 module may be harnessed for the simultaneous improvement of crop productivity and pathogen resistance.
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Affiliation(s)
- Guang Qi
- State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, and Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou 450002, China; Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Huan Chen
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Dian Wang
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Hongyuan Zheng
- State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, and Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou 450002, China
| | - Xianfeng Tang
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266109, China
| | - Zhengzheng Guo
- State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, and Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou 450002, China
| | - Jiayu Cheng
- State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, and Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou 450002, China
| | - Jian Chen
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA; Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Yiping Wang
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266109, China
| | - Ming-Yi Bai
- Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, 266237 Qingdao, China
| | - Fengquan Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Daowen Wang
- State Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, and Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou 450002, China.
| | - Zheng Qing Fu
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA.
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Chen H, Li M, Qi G, Zhao M, Liu L, Zhang J, Chen G, Wang D, Liu F, Fu ZQ. Two interacting transcriptional coactivators cooperatively control plant immune responses. Sci Adv 2021; 7:eabl7173. [PMID: 34739308 PMCID: PMC8570602 DOI: 10.1126/sciadv.abl7173] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The phytohormone salicylic acid (SA) plays a pivotal role in plant defense against biotrophic and hemibiotrophic pathogens. NPR1 and EDS1 function as two central hubs in plant local and systemic immunity. However, it is unclear how NPR1 orchestrates gene regulation and whether EDS1 directly participates in transcriptional reprogramming. Here, we show that NPR1 and EDS1 synergistically activate pathogenesis-related (PR) genes and plant defenses by forming a protein complex and recruiting Mediator. We discover that EDS1 functions as an autonomous transcriptional coactivator with intrinsic transactivation domains and physically interacts with the CDK8 subunit of Mediator. Upon SA induction, EDS1 is directly recruited by NPR1 onto the PR1 promoter via physical NPR1-EDS1 interactions, thereby potentiating PR1 activation. We further demonstrate that EDS1 stabilizes NPR1 protein and NPR1 transcriptionally up-regulates EDS1. Our results reveal an elegant interplay of key coactivators with Mediator and elucidate important molecular mechanisms for activating transcription during immune responses.
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Affiliation(s)
- Huan Chen
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety–State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Min Li
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Guang Qi
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
- State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Ming Zhao
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Longyu Liu
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
- School of Agriculture and Biology/State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jingyi Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety–State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Gongyou Chen
- School of Agriculture and Biology/State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Daowen Wang
- State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Fengquan Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety–State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China
- Corresponding author. (F.L.); (Z.Q.F.)
| | - Zheng Qing Fu
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
- Corresponding author. (F.L.); (Z.Q.F.)
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9
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Yin-Hua Y, Qi G, Shan-Shan Z, Mi T. [Preparation of curcumin TPP-PEG-PE nanomicelles with mitochondrial targeting and lysosomal escape functions and its effect on promoting breast cancer cell apoptosis]. Zhongguo Zhong Yao Za Zhi 2020; 45:5495-5503. [PMID: 33350211 DOI: 10.19540/j.cnki.cjcmm.20200819.303] [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: 11/18/2022]
Abstract
Orthogonal experiments were used to optimize the process parameters of curcumin TPP-PEG-PCL nanomicelles; the particle size, electric potential and morphology under the electron microscope were systematically detected for the curcumin TPP-PEG-PCL nanomicelles; and the stability and in vitro release of the curcumin TPP-PEG-PCL nanomicelles were investigated. With DID fluorescent dye as the fluorescent probe, flow cytometry was used to study the uptake of nanomicelles by breast cancer cells, and laser confocal microscopy was used to study the mitochondrial targeting and lysosomal escape functions of nanomicelles. Under the same dosage conditions, the effect of curcumin TPP-PEG-PCL nanomicelles on promoting the apoptosis of breast cancer cells was evaluated. The optimal particle size of curcumin TPP-PEG-PCL nanomicelle was(17.3±0.3) nm, and the Zeta potential was(14.6±2.6) mV in orthogonal test. Under such conditions, the micelle appeared as regular spheres under the transmission electron microscope. Fluorescence test results showed that TPP-PEG-PCL nanomicelles can promote drug uptake by tumor cells, escape from lysosomal phagocytosis, and target the mitochondria. The cell survival rate and Hoechst staining positive test results showed that curcumin TPP-PEG-PCL nanomicelles had a good effect on promoting apoptosis of breast cancer cells. The curcumin TPP-PEG-PCL micelles can significantly reduce the mitochondrial membrane potential of breast cancer cells, increase the release of cytochrome C, significantly increase the expression of pro-apoptotic protein Bcl-2 and reduce the expression of anti-apoptotic Bax protein. These test results were significantly better than those of curcumin PEG-PCL nanomicelles and curcumin, with statistically significant differences. The results revealed that curcumin TPP-PEG-PCL nanomicelles can well target breast cancer cell mitochondria and escape from the lysosomal capture, thereby enhancing the drug's role in promoting tumor cell apoptosis.
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Affiliation(s)
- Yuan Yin-Hua
- Cancer Research Center, Zhumadian Central Hospital of Henan Province Zhumadian 463000, China
| | - Guang Qi
- Cancer Research Center, Zhumadian Central Hospital of Henan Province Zhumadian 463000, China
| | - Zhang Shan-Shan
- Cancer Research Center, Zhumadian Central Hospital of Henan Province Zhumadian 463000, China
| | - Tang Mi
- West China School of Public Health, Sichuan University Chengdu 610039, China
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10
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Chen J, Clinton M, Qi G, Wang D, Liu F, Fu ZQ. Reprogramming and remodeling: transcriptional and epigenetic regulation of salicylic acid-mediated plant defense. J Exp Bot 2020; 71:5256-5268. [PMID: 32060527 DOI: 10.1093/jxb/eraa072] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [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: 08/27/2019] [Accepted: 02/11/2020] [Indexed: 05/13/2023]
Abstract
As a plant hormone, salicylic acid (SA) plays essential roles in plant defense against biotrophic and hemibiotrophic pathogens. Significant progress has been made in understanding the SA biosynthesis pathways and SA-mediated defense signaling networks in the past two decades. Plant defense responses involve rapid and massive transcriptional reprogramming upon the recognition of pathogens. Plant transcription factors and their co-regulators are critical players in establishing a transcription regulatory network and boosting plant immunity. A multitude of transcription factors and epigenetic regulators have been discovered, and their roles in SA-mediated defense responses have been reported. However, our understanding of plant transcriptional networks is still limited. As such, novel genomic tools and bioinformatic techniques will be necessary if we are to fully understand the mechanisms behind plant immunity. Here, we discuss current knowledge, provide an update on the SA biosynthesis pathway, and describe the transcriptional and epigenetic regulation of SA-mediated plant immune responses.
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Affiliation(s)
- Jian Chen
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, P. R. China
- Department of Biological Sciences, University of South Carolina, Columbia, SC, USA
| | - Michael Clinton
- Department of Biological Sciences, University of South Carolina, Columbia, SC, USA
| | - Guang Qi
- Department of Biological Sciences, University of South Carolina, Columbia, SC, USA
- State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou, P. R. China
| | - Daowen Wang
- State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou, P. R. China
| | - Fengquan Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, P. R. China
| | - Zheng Qing Fu
- Department of Biological Sciences, University of South Carolina, Columbia, SC, USA
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11
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Lu W, Qi G, Ding Z, Li X, Qi W, He F. Clinical efficacy of acellular dermal matrix for plastic periodontal and implant surgery: a systematic review. Int J Oral Maxillofac Surg 2020; 49:1057-1066. [DOI: 10.1016/j.ijom.2019.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 12/02/2019] [Accepted: 12/12/2019] [Indexed: 11/24/2022]
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12
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Chen H, Clinton M, Qi G, Wang D, Liu F, Fu ZQ. Connecting the Dots: A New and Complete Salicylic Acid Biosynthesis Pathway. Mol Plant 2019; 12:1539-1541. [PMID: 31951575 DOI: 10.1016/j.molp.2019.11.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 11/16/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Affiliation(s)
- Huan Chen
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China; Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Michael Clinton
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Guang Qi
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA; State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Daowen Wang
- State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Fengquan Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China.
| | - Zheng Qing Fu
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA.
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13
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Abstract
In human-machine interaction, facial emotion recognition plays an important role in recognizing the psychological state of humans. In this study, we propose a novel emotion recognition framework based on using a knowledge transfer approach to capture features and employ an improved deep forest model to determine the final emotion types. The structure of a very deep convolutional network is learned from ImageNet and is utilized to extract face and emotion features from other data sets, solving the problem of insufficiently labeled samples. Then, these features are input into a classifier called multi-composition deep forest, which consists of 16 types of forests for facial emotion recognition, to enhance the diversity of the framework. The proposed method does not need require to train a network with a complex structure, and the decision tree-based classifier can achieve accurate results with very few parameters, making it easier to implement, train, and apply in practice. Moreover, the classifier can adaptively decide its model complexity without iteratively updating parameters. The experimental results for two emotion recognition problems demonstrate the superiority of the proposed method over several well-known methods in facial emotion recognition.
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14
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Chen J, Mohan R, Zhang Y, Li M, Chen H, Palmer IA, Chang M, Qi G, Spoel SH, Mengiste T, Wang D, Liu F, Fu ZQ. NPR1 Promotes Its Own and Target Gene Expression in Plant Defense by Recruiting CDK8. Plant Physiol 2019; 181:289-304. [PMID: 31110139 PMCID: PMC6716257 DOI: 10.1104/pp.19.00124] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 05/10/2019] [Indexed: 05/19/2023]
Abstract
NPR1 (NONEXPRESSER OF PR GENES1) functions as a master regulator of the plant hormone salicylic acid (SA) signaling and plays an essential role in plant immunity. In the nucleus, NPR1 interacts with transcription factors to induce the expression of PR (PATHOGENESIS-RELATED) genes and thereby promote defense responses. However, the underlying molecular mechanism of PR gene activation is poorly understood. Furthermore, despite the importance of NPR1 in plant immunity, the regulation of NPR1 expression has not been extensively studied. Here, we show that SA promotes the interaction of NPR1 with both CDK8 (CYCLIN-DEPENDENT KINASE8) and WRKY18 (WRKY DNA-BINDING PROTEIN18) in Arabidopsis (Arabidopsis thaliana). NPR1 recruits CDK8 and WRKY18 to the NPR1 promoter, facilitating its own expression. Intriguingly, CDK8 and its associated Mediator subunits positively regulate NPR1 and PR1 expression and play a pivotal role in local and systemic immunity. Moreover, CDK8 interacts with WRKY6, WRKY18, and TGA transcription factors and brings RNA polymerase II to NPR1 and PR1 promoters and coding regions to facilitate their expression. Our studies reveal a mechanism in which NPR1 recruits CDK8, WRKY18, and TGA transcription factors along with RNA polymerase II in the presence of SA and thereby facilitates its own and target gene expression for the establishment of plant immunity.
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Affiliation(s)
- Jian Chen
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, People's Republic of China
- Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208
| | - Rajinikanth Mohan
- Department of Biology, Duke University, Durham, North Carolina 27708
| | - Yuqiang Zhang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Min Li
- Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208
| | - Huan Chen
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, People's Republic of China
- Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208
| | - Ian Arthur Palmer
- Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208
| | - Ming Chang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, People's Republic of China
- Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208
| | - Guang Qi
- Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208
- State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou 450002, People's Republic of China
| | - Steven H Spoel
- Department of Biology, Duke University, Durham, North Carolina 27708
| | - Tesfaye Mengiste
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana 47907
| | - Daowen Wang
- State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou 450002, People's Republic of China
| | - Fengquan Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, People's Republic of China
| | - Zheng Qing Fu
- Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208
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15
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Lv M, Yang L, Wang X, Cheng X, Song Y, Yin Y, Liu H, Han Y, Cao K, Ma W, Qi G, Li S. Visible-light photocatalytic capability and the mechanism investigation of a novel PANI/Sn3O4 p–n heterostructure. RSC Adv 2019; 9:40694-40707. [PMID: 35542680 PMCID: PMC9076232 DOI: 10.1039/c9ra07562c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 09/18/2019] [Accepted: 12/02/2019] [Indexed: 12/03/2022] Open
Abstract
A novel polyaniline (PANI)/Sn3O4 heterojunction composed of PANI nanofibers and Sn3O4 nanosheets was fabricated by a facile physical milling technique. Modification of Sn3O4 with a PANI conductive polymer contributes to facilitating interfacial charge transfer efficiency, and thus, significantly enhances the visible-light Rhodamine B (RhB) photo-degradation. Results indicate that PANI/Sn3O4 heterostructures with 10 wt% PANI reached the maximum degradation efficiency (around 97%) for RhB within 5 h, which is 2.27 times higher than that of Sn3O4 alone. This improvement is due to the p–n heterostructure formation in PANI/Sn3O4. Moreover, the outcome of reactive species capturing experiments demonstrated that in PANI/Sn3O4, holes made the largest contribution to RhB degradation under visible light illumination, while hydroxyl radicals showed less significance under the same conditions. In addition, the photocatalytic mechanism was proposed based on evidence from the reactive species test and energy band structure analysis. A novel polyaniline (PANI)/Sn3O4 heterojunction composed of PANI nanofibers and Sn3O4 nanosheets was fabricated by a facile physical milling technique.![]()
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16
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Wang H, Qi G, Zhang H, Wang X, Wu S, Wang J, Yue H. 177 Effect of dietary choline and Schizochytrium oil on DHA content in the egg yolk and egg quality during storage. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H Wang
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
| | - G Qi
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
| | - H Zhang
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
| | - X Wang
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
| | - S Wu
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
| | - J Wang
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
| | - H Yue
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
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17
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Hu M, Qi G, Wang J, Wu S, Yu H. 188 Effects of dietary supplementation of L-histidine and beta-alanine on growth performance, breast muscle carnosine content and carnosine-related enzyme mRNA expression in broiler chicks. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Hu
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
| | - G Qi
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
| | - J Wang
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
| | - S Wu
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
| | - H Yu
- Feed Research Institute of Chinese Academy of Agricultural Sciences,Beijing, China
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18
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Qi G, Chen J, Chang M, Chen H, Hall K, Korin J, Liu F, Wang D, Fu ZQ. Pandemonium Breaks Out: Disruption of Salicylic Acid-Mediated Defense by Plant Pathogens. Mol Plant 2018; 11:1427-1439. [PMID: 30336330 DOI: 10.1016/j.molp.2018.10.002] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [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: 07/09/2018] [Revised: 09/30/2018] [Accepted: 10/09/2018] [Indexed: 05/26/2023]
Abstract
Salicylic acid (SA) or 2-hydroxybenoic acid is a phenolic plant hormone that plays an essential role in plant defense against biotrophic and semi-biotrophic pathogens. In Arabidopsis, SA is synthesized from chorismate in the chloroplast through the ICS1 (isochorismate synthase I) pathway during pathogen infection. The transcription co-activator NPR1 (Non-Expresser of Pathogenesis-Related Gene 1), as the master regulator of SA signaling, interacts with transcription factors to induce the expression of anti-microbial PR (Pathogenesis-Related) genes. To establish successful infections, plant bacterial, oomycete, fungal, and viral pathogens have evolved at least three major strategies to disrupt SA-mediated defense. The first strategy is to reduce SA accumulation directly by converting SA into its inactive derivatives. The second strategy is to interrupt SA biosynthesis by targeting the ICS1 pathway. In the third major strategy, plant pathogens deploy different mechanisms to interfere with SA downstream signaling. The wide array of strategies deployed by plant pathogens highlights the crucial role of disruption of SA-mediated plant defense in plant pathogenesis. A deeper understanding of this topic will greatly expand our knowledge of how plant pathogens cause diseases and consequently pave the way for the development of more effective ways to control these diseases.
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Affiliation(s)
- Guang Qi
- State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China; Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Jian Chen
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China; Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Ming Chang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China; Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Huan Chen
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China; Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Katherine Hall
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - John Korin
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - Fengquan Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China.
| | - Daowen Wang
- State Key Laboratory of Wheat and Maize Crop Science and College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China.
| | - Zheng Qing Fu
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA.
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Shi D, Ren A, Tang X, Qi G, Xu Z, Chai G, Hu R, Zhou G, Kong Y. MYB52 Negatively Regulates Pectin Demethylesterification in Seed Coat Mucilage. Plant Physiol 2018; 176:2737-2749. [PMID: 29440562 PMCID: PMC5884589 DOI: 10.1104/pp.17.01771] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 01/29/2018] [Indexed: 05/21/2023]
Abstract
Pectin, which is a major component of the plant primary cell walls, is synthesized and methyl-esterified in the Golgi apparatus and then demethylesterified by pectin methylesterases (PMEs) located in the cell wall. The degree of methylesterification affects the functional properties of pectin, and thereby influences plant growth, development and defense. However, little is known about the mechanisms that regulate pectin demethylesterification. Here, we show that in Arabidopsis (Arabidopsis thaliana) seed coat mucilage, the absence of the MYB52 transcription factor is correlated with an increase in PME activity and a decrease in the degree of pectin methylesterification. Decreased methylesterification in the myb52 mutant is also correlated with an increase in the calcium content of the seed mucilage. Chromatin immunoprecipitation analysis and molecular genetic studies suggest that MYB52 transcriptionally activates PECTIN METHYLESTERASE INHIBITOR6 (PMEI6), PMEI14, and SUBTILISIN-LIKE SER PROTEASE1.7 (SBT1.7) by binding to their promoters. PMEI6 and SBT1.7 have previously been shown to be involved in seed coat mucilage demethylesterification. Our characterization of two PMEI14 mutants suggests that PMEI14 has a role in seed coat mucilage demethylesterification, although its activity may be confined to the seed coat in contrast to PMEI6, which functions in the whole seed. Our demonstration that MYB52 negatively regulates pectin demethylesterification in seed coat mucilage, and the identification of components of the molecular network involved, provides new insight into the regulatory mechanism controlling pectin demethylesterification and increases our understanding of the transcriptional regulation network involved in seed coat mucilage formation.
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Affiliation(s)
- Dachuan Shi
- Key Laboratory for Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China
| | - Angyan Ren
- Key Laboratory for Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China
| | - Xianfeng Tang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Guang Qi
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Zongchang Xu
- Key Laboratory for Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China
| | - Guohua Chai
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Ruibo Hu
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Gongke Zhou
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Yingzhen Kong
- Key Laboratory for Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China
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Yu C, Zhao X, Qi G, Bai Z, Wang Y, Wang S, Ma Y, Liu Q, Hu R, Zhou G. Integrated analysis of transcriptome and metabolites reveals an essential role of metabolic flux in starch accumulation under nitrogen starvation in duckweed. Biotechnol Biofuels 2017; 10:167. [PMID: 28670341 PMCID: PMC5485579 DOI: 10.1186/s13068-017-0851-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 06/16/2017] [Indexed: 05/19/2023]
Abstract
BACKGROUND Duckweed is considered a promising source of energy due to its high starch content and rapid growth rate. Starch accumulation in duckweed involves complex processes that depend on the balanced expression of genes controlled by various environmental and endogenous factors. Previous studies showed that nitrogen starvation induces a global stress response and results in the accumulation of starch in duckweed. However, relatively little is known about the mechanisms underlying the regulation of starch accumulation under conditions of nitrogen starvation. RESULTS In this study, we used next-generation sequencing technology to examine the transcriptome responses of Lemna aequinoctialis 6000 at three stages (0, 3, and 7 days) during nitrogen starvation in the presence of exogenously applied sucrose. Overall, 2522, 628, and 1832 differentially expressed unigenes (DEGs) were discovered for the treated and control samples. Clustering and enrichment analysis of DEGs revealed several biological processes occurring under nitrogen starvation. Genes involved in nitrogen metabolism showed the earliest responses to nitrogen starvation, whereas genes involved in carbohydrate biosynthesis were responded subsequently. The expression of genes encoding nitrate reductase, glutamine synthetase, and glutamate synthase was down-regulated under nitrogen starvation. The expression of unigenes encoding enzymes involved in gluconeogenesis was up-regulated, while the majority of unigenes involved in glycolysis were down-regulated. The metabolite results showed that more ADP-Glc was accumulated and lower levels of UDP-Glc were accumulated under nitrogen starvation, the activity of AGPase was significantly increased while the activity of UGPase was dramatically decreased. These changes in metabolite levels under nitrogen starvation are roughly consistent with the gene expression changes in the transcriptome. CONCLUSIONS Based on these results, it can be concluded that the increase of ADP-glucose and starch contents under nitrogen starvation is a consequence of increased output from the gluconeogenesis and TCA pathways, accompanied with the reduction of lipids and pectin biosynthesis. The results provide novel insights into the underlying mechanisms of starch accumulation during nitrogen starvation, which provide a foundation for the improvement of advanced bioethanol production in duckweed.
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Affiliation(s)
- Changjiang Yu
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 People’s Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Xiaowen Zhao
- College of Life Sciences, China Agricultural University, Beijing, 100094 People’s Republic of China
| | - Guang Qi
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 People’s Republic of China
| | - Zetao Bai
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 People’s Republic of China
| | - Yu Wang
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 People’s Republic of China
| | - Shumin Wang
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 People’s Republic of China
| | - Yubin Ma
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 People’s Republic of China
| | - Qian Liu
- Guangzhou Genedenovo Biotechnology Co., Ltd, Guangzhou, 510006 China
| | - Ruibo Hu
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 People’s Republic of China
| | - Gongke Zhou
- Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 People’s Republic of China
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Zhang Z, Su D, Zhu P, Bi X, Qi G, Wu X. Effect of different luteal support schemes on clinical outcome in frozen-thawed embryos transfer cycles. CLIN EXP OBSTET GYN 2016. [DOI: 10.12891/ceog2088.2016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Zhang Z, Su D, Zhu P, Bi X, Qi G, Wu X. Effect of different luteal support schemes on clinical outcome in frozen-thawed embryos transfer cycles. CLIN EXP OBSTET GYN 2016; 43:486-489. [PMID: 29734532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To evaluate the clinical outcome of frozen-thawed embryo transfer (FET) when using different luteal support schemes. STUDY DESIGN Retrospective analysis of FET cycles was performed from June 2013 and December 2013. Infertile women, who underwent FET cycles utilizing embryos cryopreserved on day 3 post-insemination following an initial fresh IVF cycle. Patients were divided into three groups according to the luteal support scheme. Grade A (oral administration of progesterone, n=156), Group B (vaginal administration of progesterone, n=345), Group C (dissolved progesterone in oil with intramuscular infection, n=885), and group C was divided into two subgroups according to with (subgroup Cl, n=521) or without (subgroup C2 ,n=364) human chorionic gonadotrophi (hCG) injected intramuscularly. The authors compared patients' characteristics and the pregnancy outcomes of each group. RESULTS There was no difference in the patient characteristics of each group. There was no difference in the implantation rate or clinical and ongoing pregnancy rate among oral, vaginal, and intramuscular progesterone groups. The abortion and ectopic pregnancy rates were not significantly different among the three groups. CONCLUSION Oral progesterone in the FET cycles is convenient and has similar pregnancy outcomes compared with intramuscular or vaginal administration.
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Qi G, Wang D, Yu L, Tang X, Chai G, He G, Ma W, Li S, Kong Y, Fu C, Zhou G. Metabolic engineering of 2-phenylethanol pathway producing fragrance chemical and reducing lignin in Arabidopsis. Plant Cell Rep 2015; 34:1331-42. [PMID: 25895734 DOI: 10.1007/s00299-015-1790-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 03/25/2015] [Accepted: 03/31/2015] [Indexed: 05/09/2023]
Abstract
Two 2-phenylethanol biosynthetic pathways were constructed into Arabidopsis ; 2-phenylethanol biosynthesis led to reduced rate of lignin biosynthesis and increased cellulose-to-glucose conversion in the transgenic plants. Lignin is the second most abundant biopolymer on the planet with importance for various agro-industrial activities. The presence of lignin in cell walls, however, impedes biofuel production from lignocellulosic biomass. The phenylpropanoid pathway is responsible for the biosynthesis of lignin and other phenolic metabolites such as 2-phenylethanol. As one of the most used fragrance chemicals, 2-phenylethanol is synthesized in plants from L-phenylalanine which is the first specific intermediate towards lignin biosynthesis. Thus, it is interesting to prove the concept that the phenylpropanoid pathway can be modulated for reduction of lignin as well as production of natural value-added compounds. Here we conferred two 2-phenylethanol biosynthetic pathways constructed from plants and Saccharomyces cerevisiae into Arabidopsis. As anticipated, 2-phenylethanol was accumulated in transgenic plants. Moreover, the transformants showed 12-14% reduction in lignin content and 9-13% increase in cellulose content. Consequently, the glucose yield from cell wall hydrolysis was increased from 37.4% in wild type to 49.9-52.1% in transgenic plants with hot water pretreatment. The transgenic plants had normal development and even enhanced growth relative to the wild type. Our results indicate that the shunt of L-phenylalanine flux to the artificially constructed 2-phenylethanol biosynthetic pathway most likely reduced the rate of lignin biosynthesis in Arabidopsis.
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Affiliation(s)
- Guang Qi
- Key Laboratory of Biofuels and Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China,
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Tang X, Zhuang Y, Qi G, Wang D, Liu H, Wang K, Chai G, Zhou G. Poplar PdMYB221 is involved in the direct and indirect regulation of secondary wall biosynthesis during wood formation. Sci Rep 2015; 5:12240. [PMID: 26179205 PMCID: PMC4503951 DOI: 10.1038/srep12240] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 06/23/2015] [Indexed: 12/27/2022] Open
Abstract
Wood is formed by the successive addition of secondary xylem, which consists of cells with a conspicuously thickened secondary wall composed mainly of cellulose, xylan and lignin. Currently, few transcription factors involved in the direct regulation of secondary wall biosynthesis have been characterized in tree species. Here, we show that PdMYB221, a poplar ortholog of the Arabidopsis R2R3-MYB transcription factor AtMYB4, directly regulates secondary wall biosynthesis during wood formation. PdMYB221 is predominantly expressed in cells of developing wood, and the protein it encodes localizes to the nucleus and acts as a transcriptional repressor. Ectopic expression of PdMYB221 resulted in reduced cell wall thicknesses of fibers and vessels in Arabidopsis inflorescence stems. The amounts of cellulose, xylose, and lignin were decreased and the expression of key genes synthesizing the three components was suppressed in PdMYB221 overexpression plants. Transcriptional activation assays showed that PdMYB221 repressed the promoters of poplar PdCESA7/8, PdGT47C, PdCOMT2 and PdCCR1. Electrophoretic mobility shift assays revealed that PdMYB221 bound directly to the PdCESA8, PdGT47C, and PdCOMT2 promoters. Together, our results suggest that PdMYB221 may be involved in the negative regulation of secondary wall formation through the direct and indirect suppression of the gene expression of secondary wall biosynthesis.
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Affiliation(s)
- Xianfeng Tang
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Yamei Zhuang
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
- Qingdao Engineering Research Center for Rural Environment, College of Resources and Environment, Qingdao Agricultural University, Qingdao, 266109, China
| | - Guang Qi
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Dian Wang
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Huanhuan Liu
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Kairong Wang
- Qingdao Engineering Research Center for Rural Environment, College of Resources and Environment, Qingdao Agricultural University, Qingdao, 266109, China
| | - Guohua Chai
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Gongke Zhou
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
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Chai G, Kong Y, Zhu M, Yu L, Qi G, Tang X, Wang Z, Cao Y, Yu C, Zhou G. Arabidopsis C3H14 and C3H15 have overlapping roles in the regulation of secondary wall thickening and anther development. J Exp Bot 2015; 66:2595-609. [PMID: 25732536 DOI: 10.1093/jxb/erv060] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Plant tandem CCCH zinc finger (TZF) proteins play diverse roles in developmental and adaptive processes. Arabidopsis C3H14 has been shown to act as a potential regulator of secondary wall biosynthesis. However, there is lack of direct evidence to support its functions in Arabidopsis. It is demonstrated here that C3H14 and its homologue C3H15 redundantly regulate secondary wall formation and that they additionally function in anther development. Plants with double, but not single, T-DNA mutants for C3H14 or C3H15 have few pollen grains and thinner stem secondary walls than the wild type. Plants homozygous for c3h14 and heterozygous for c3h15 [c3h14 c3h15(±)] have slightly thinner secondary walls than plants heterozygous for c3h14 and homozygous for c3h15 [c3h14(±) c3h15], and c3h14(±) c3h15 have lower fertility. Overexpression of C3H14 or C3H15 led to increased secondary wall thickness in stems and the ectopic deposition of secondary walls in various tissues, but did not affect anther morphology. Transcript profiles from the C3H14/15 overexpression and c3h14 c3h15 plants revealed marked changes in the expression of many genes associated with cell wall metabolism and pollen formation. Subcellular localization and biochemical analyses suggest that C3H14/15 might function at both the transcriptional and post-transcriptional levels.
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Affiliation(s)
- Guohua Chai
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Yingzhen Kong
- Key Llaboratory of Tobacco Gene Resource, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Ming Zhu
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Li Yu
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Guang Qi
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Xianfeng Tang
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Zengguang Wang
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Yingping Cao
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Changjiang Yu
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Gongke Zhou
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
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Al-Marri MJ, Khader MM, Tawfik M, Qi G, Giannelis EP. CO₂ sorption kinetics of scaled-up polyethylenimine-functionalized mesoporous silica sorbent. Langmuir 2015; 31:3569-3576. [PMID: 25764385 DOI: 10.1021/acs.langmuir.5b00189] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Two CO2 solid sorbents based on polyethylenimine, PEI (M(n) ∼ 423 and 10K), impregnated into mesoporous silica (MPS) foam prepared in kilogram quantities via a scale-up process were synthesized and systematically characterized by a range of analytical and surface techniques. The mesoporous silica sorbent impregnated with lower molecular weight PEI, PEI-423/MPS, showed higher capacity toward CO2 sorption than the sorbent functionalized with the higher molecular weight PEI (PEI-10K/MPS). On the other hand, PEI-10K/MPS exhibited higher thermal stability than PEI-423/MPS. The kinetics of CO2 adsorption on both PEI/MPS fitted well with a double-exponential model. According to this model CO2 adsorption can be divided into two steps: the first is fast and is attributed to CO2 adsorption on the sorbent surface; the second is slower and can be related to the diffusion of CO2 within and between the mesoporous particles. In contrast, the desorption process obeyed first-order kinetics with activation energies of 64.3 and 140.7 kJ mol(-1) for PEI-423/MPS and PEI-10K/MPS, respectively. These studies suggest that the selection of amine is critical as it affects not only sorbent capacity and stability but also the energy penalty associated with sorbent regeneration.
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Affiliation(s)
- M J Al-Marri
- †Gas Processing Center, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - M M Khader
- †Gas Processing Center, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - M Tawfik
- †Gas Processing Center, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - G Qi
- ‡Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
| | - E P Giannelis
- ‡Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
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Khader MM, Al-Marri MJ, Ali S, Qi G, Giannelis EP. Adsorption of CO<sub>2</sub> on Polyethyleneimine 10k—<i>Mesoporous silica</i> Sorbent: XPS and TGA Studies. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ajac.2015.64026] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Bio-inspired laminated graphite nanosheets/copper composites with modified mechanical properties.
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Affiliation(s)
- P. Wang
- Shanghai Hiwave Advanced Materials Technology Co., Ltd
- Shanghai 200240
- P. R. China
| | - W. Liu
- Shanghai Hiwave Advanced Materials Technology Co., Ltd
- Shanghai 200240
- P. R. China
| | - L. Chen
- Shanghai Hiwave Advanced Materials Technology Co., Ltd
- Shanghai 200240
- P. R. China
| | - C. Mu
- Wenzhou Hongfeng Electrical Alloy Co., Ltd
- Wenzhou 325603
- P. R. China
| | - G. Qi
- Wenzhou Hongfeng Electrical Alloy Co., Ltd
- Wenzhou 325603
- P. R. China
| | - F. Bian
- Shanghai Synchrotron Radiation Facility
- Shanghai Institute of Applied Physics Chinese Academy of Sciences
- Shanghai 201204
- P. R. China
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Ji L, Hu R, Jiang J, Qi G, Yang X, Zhu M, Fu C, Zhou G, Yi Z. Molecular cloning and expression analysis of 13 NAC transcription factors in Miscanthus lutarioriparius. Plant Cell Rep 2014; 33:2077-2092. [PMID: 25224554 DOI: 10.1007/s00299-014-1682-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 07/30/2014] [Accepted: 09/01/2014] [Indexed: 06/03/2023]
Abstract
The 13 MlNAC genes could respond to various abiotic stresses, suggesting their crucial roles in stress response. Overexpression of MlNAC2 in Arabidopsis led to improved drought tolerance. NAC (NAM, ATAF1/2 and CUC2) proteins are plant-specific transcription factors that play crucial roles in plant development, growth and stress responses. In this study, 13 stress-responsive NAC genes were identified from Miscanthus lutarioriparius. Full-length cDNA sequences were obtained for 11 MlNAC genes, which were phylogenetically classified into six subfamilies. Sequence alignment revealed the highly conserved NAC domain in the N-terminus of these MlNACs, while the C-terminus was highly divergent. We performed quantitative real-time RT-PCR to examine the expression profiles of MlNAC genes in different tissues including root, rhizome, mature stem, young stem, leaf and sheath. The 13 MlNAC genes displayed distinct tissue-specific patterns in six tissues examined. To gain further insight into their roles in response to abiotic stresses, expressions of MlNAC genes were analyzed under different stresses and hormone treatments including salt, drought, cold, wounding, abscisic acid, Methyl jasmonate and salicylic acid. The 13 MlNAC genes could respond to at least five stress treatments, and over 100-fold variations in transcript levels of MlNAC1, MlNAC2, MlNAC4, and MlNAC12 were observed in salt, drought and MeJA treatments, which indicated that MlNACs play crucial roles in stress response. Crosstalk among various abiotic stress and hormone responses was also discussed based on the expression of MlNAC genes. Overexpression of MlNAC2 in Arabidopsis (Col-0) led to improved drought tolerance. The water loss rate was significantly lower, and the recovery rate after a 60-min dehydration stress treatment was significantly higher in the MlNAC2 overexpression lines than the control.
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Affiliation(s)
- Lu Ji
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, Hunan, People's Republic of China
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Chai G, Wang Z, Tang X, Yu L, Qi G, Wang D, Yan X, Kong Y, Zhou G. R2R3-MYB gene pairs in Populus: evolution and contribution to secondary wall formation and flowering time. J Exp Bot 2014; 65:4255-69. [PMID: 24821954 DOI: 10.1093/jxb/eru196] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
In plants, the R2R3-MYB gene family contains many pairs of paralogous genes, which play the diverse roles in developmental processes and environmental responses. The paper reports the characterization of 81 pairs of Populus R2R3-MYB genes. Chromosome placement, phylogenetic, and motif structure analyses showed that these gene pairs resulted from multiple types of gene duplications and had five different gene fates. Tissue expression patterns revealed that most duplicated genes were specifically expressed in the tissues examined. qRT-PCR confirmed that nine pairs were highly expressed in xylem, of which three pairs (PdMYB10/128, PdMYB90/167, and PdMYB92/125) were further functionally characterized. The six PdMYBs were localized to the nucleus and had transcriptional activities in yeast. The heterologous expression of PdMYB10 and 128 in Arabidopsis increased stem fibre cell-wall thickness and delayed flowering. In contrast, overexpression of PdMYB90, 167, 92, and 125 in Arabidopsis decreased stem fibre and vessel cell-wall thickness and promoted flowering. Cellulose, xylose, and lignin contents were changed in overexpression plants. The expression levels of several genes involved in secondary wall formation and flowering were affected by the overexpression of the six PdMYBs in Arabidopsis. This study addresses the diversity of gene duplications in Populus R2R3-MYBs and the roles of these six genes in secondary wall formation and flowering control.
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Affiliation(s)
- Guohua Chai
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Zengguang Wang
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Xianfeng Tang
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Li Yu
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Guang Qi
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Dian Wang
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Xiaofei Yan
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Yingzhen Kong
- Key Laboratory of Tobacco Gene Resource, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Gongke Zhou
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
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Chai G, Qi G, Cao Y, Wang Z, Yu L, Tang X, Yu Y, Wang D, Kong Y, Zhou G. Poplar PdC3H17 and PdC3H18 are direct targets of PdMYB3 and PdMYB21, and positively regulate secondary wall formation in Arabidopsis and poplar. New Phytol 2014; 203:520-534. [PMID: 24786865 DOI: 10.1111/nph.12825] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [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: 12/21/2013] [Accepted: 03/26/2014] [Indexed: 05/21/2023]
Abstract
Wood biomass is mainly made of secondary cell walls, whose formation is controlled by a multilevel network. The tandem CCCH zinc finger (TZF) proteins involved in plant secondary wall formation are poorly understood. Two TZF genes, PdC3H17 and PdC3H18, were isolated from Populus deltoides and functionally characterized in Escherichia coli, tobacco, Arabidopsis and poplar. PdC3H17 and PdC3H18 are predominantly expressed in cells of developing wood, and the proteins they encode are targeted to cytoplasmic foci. Transcriptional activation assays showed that PdMYB2/3/20/21 individually activated the PdC3H17 and PdC3H18 promoters, but PdMYB3/21 were most significant. Electrophoretic mobility shift assays revealed that PdMYB3/21 bound directly to the PdC3H17/18 promoters. Overexpression of PdC3H17/18 in poplar increased secondary xylem width and secondary wall thickening in stems, whereas dominant repressors of them had the opposite effects on these traits. Similar alteration in secondary wall thickening was observed in their transgenic Arabidopsis plants. qRT-PCR results showed that PdC3H17/18 regulated the expression of cellulose, xylan and lignin biosynthetic genes, and several wood-associated MYB genes. These results demonstrate that PdC3H17 and PdC3H18 are the targets of PdMYB3 and PdMYB21 and are an additional two components in the regulatory network of secondary xylem formation in poplar.
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Affiliation(s)
- Guohua Chai
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Guang Qi
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Yingping Cao
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Zengguang Wang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Li Yu
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Xianfeng Tang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Yanchong Yu
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Dian Wang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Yingzhen Kong
- Key Laboratory of Tobacco Gene Resource, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Gongke Zhou
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
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Tam AMW, Qi G, Srivastava AK, Wang XQ, Fan F, Chigrinov VG, Kwok HS. Enhanced performance configuration for fast-switching deformed helix ferroelectric liquid crystal continuous tunable Lyot filter. Appl Opt 2014; 53:3787-3795. [PMID: 24921146 DOI: 10.1364/ao.53.003787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 05/05/2014] [Indexed: 06/03/2023]
Abstract
In this paper, we present a novel design configuration of double DHFLC wave plate continuous tunable Lyot filter, which exhibits a rapid response time of 185 μs, while the high-contrast ratio between the passband and stop band is maintained throughout a wide tunable range. A DHFLC tunable filter with a high-contrast ratio is attractive for realizing high-speed optical processing devices, such as multispectral and hyperspectral imaging systems, real-time remote sensing, field sequential color display, and wavelength demultiplexing in the metro network. In this work, an experimental prototype for a single-stage DHFLC Lyot filter of this design has been fabricated using photoalignment technology. We have demonstrated that the filter has a continuous tunable range of 30 nm for a blue wavelength, 45 nm for a green wavelength, and more than 50 nm for a red wavelength when the applied voltage gradually increases from 0 to 8 V. Within this tunable range, the contrast ratio of the proposed double wave plate configuration is maintained above 20 with small deviation in the transmittance level. Simulation and experimental results showed the proposed double DHFLC wave plate configuration enhances the contrast ratio of the tunable filter and, thus, increases the tunable range of the filter when compared with the Lyot filter using a single DHFLC wave plate. Moreover, we have proposed a polarization insensitive configuration for which the efficiency of the existing prototype can theoretically be doubled by the use of polarization beam splitters.
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Cao Y, Li J, Yu L, Chai G, He G, Hu R, Qi G, Kong Y, Fu C, Zhou G. Cell wall polysaccharide distribution in Miscanthus lutarioriparius stem using immuno-detection. Plant Cell Rep 2014; 33:643-53. [PMID: 24522548 DOI: 10.1007/s00299-014-1574-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 01/18/2014] [Accepted: 01/20/2014] [Indexed: 05/08/2023]
Abstract
Cell wall polysaccharides' occurrences in two internodes of different development stages in M. lutarioriparius stem were analyzed and three major differences between them were identified by cell wall polysaccharide probes. Deposition and modification of cell wall polysaccharides during stem development affect biomass yield of the Miscanthus energy crop. The distribution patterns of cell wall polysaccharides in the 2nd and the 11th internodes of M. lutarioriparius stem were studied using in situ immunofluorescence assay. Crystalline cellulose and xylan were present in most of the stem tissues except phloem, where xyloglucan was the major composition of hemicellulose. The distribution of pectin polysaccharides varied in stem tissues, particularly in vascular bundle elements. Xylogalacturonan, feruloylated-1,4-β-D-galactan and (1,3)(1,4)-β-glucans, however, were insufficient for antibodies binding in both internodes. Furthermore, the distribution of cell wall polysaccharides was differentiated in the two internodes of M. lutarioriparius. The significant differences in the pattern of occurrence of long 1,5-α-L-arabinan chain, homogalacturonan and fucosylated xyloglucans epitope were detected between the two internodes. In addition, the relationships between probable functions of polysaccharides and their distribution patterns in M. lutarioriparius stem cell wall were discussed, which would be helpful to understand the growth characteristics of Miscanthus and identify potential targets for either modification or degradation.
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Affiliation(s)
- Yingping Cao
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences (QIBEBT-CAS), Qingdao, 266101, Shandong, People's Republic of China
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Qi G, Hu R, Yu L, Chai G, Cao Y, Zuo R, Kong Y, Zhou G. Two poplar cellulose synthase-like D genes, PdCSLD5 and PdCSLD6, are functionally conserved with Arabidopsis CSLD3. J Plant Physiol 2013; 170:1267-1276. [PMID: 23746994 DOI: 10.1016/j.jplph.2013.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 11/30/2012] [Revised: 04/01/2013] [Accepted: 04/07/2013] [Indexed: 06/02/2023]
Abstract
Root hairs are tip-growing long tubular outgrowths of specialized epidermal cells, and are important for nutrient and water uptake and interaction with the soil microflora. Here we characterized two poplar cellulose synthase-like D (CSLD) genes, PdCSLD5 and PdCSLD6, the most probable orthologs to the Arabidopsis AtCSLD3/KOJAK gene. Both PdCSLD5 and PdCSLD6 are strongly expressed in roots, including in the root hairs. Subcellular localization experiments showed that these two proteins are located not only in the polarized plasma membrane of root hair tips, but also in Golgi apparatus of the root hair and non-hair-forming cells. Overexpression of these two poplar genes in the atcsld3 mutant was able to rescue most of the defects caused by disruption of AtCSLD3, including root hair morphological changes, altered cell wall monosaccharide composition, increased non-crystalline β-1,4-glucan and decreased crystalline cellulose contents. Taken together, our results provide evidence indicating that PdCSLD5 and PdCSLD6 are functionally conserved with AtCSLD3 and support a role for PdCSLD5 and PdCSL6 specifically in crystalline cellulose production in poplar root hair tips. The results presented here also suggest that at least part of the mechanism of root hair formation is conserved between herbaceous and woody plants.
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Affiliation(s)
- Guang Qi
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China
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Wang X, Shao G, Chen H, Lewis BJ, Qi G, Yu D, Zhou L, Dai L. An application of remote sensing data in mapping landscape-level forest biomass for monitoring the effectiveness of forest policies in northeastern China. Environ Manage 2013; 52:612-620. [PMID: 23793545 DOI: 10.1007/s00267-013-0089-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Accepted: 05/20/2013] [Indexed: 06/02/2023]
Abstract
Monitoring the dynamics of forest biomass at various spatial scales is important for better understanding the terrestrial carbon cycle as well as improving the effectiveness of forest policies and forest management activities. In this article, field data and Landsat image data acquired in 1999 and 2007 were utilized to quantify spatiotemporal changes of forest biomass for Dongsheng Forestry Farm in Changbai Mountain region of northeastern China. We found that Landsat TM band 4 and Difference Vegetation Index with a 3 × 3 window size were the best predictors associated with forest biomass estimations in the study area. The inverse regression model with Landsat TM band 4 predictor was found to be the best model. The total forest biomass in the study area decreased slightly from 2.77 × 10(6) Mg in 1999 to 2.73 × 10(6) Mg in 2007, which agreed closely with field-based model estimates. The area of forested land increased from 17.9 × 10(3) ha in 1999 to 18.1 × 10(3) ha in 2007. The stabilization of forest biomass and the slight increase of forested land occurred in the period following implementations of national forest policies in China in 1999. The pattern of changes in both forest biomass and biomass density was altered due to different management regimes adopted in light of those policies. This study reveals the usefulness of the remote sensing-based approach for detecting and monitoring quantitative changes in forest biomass at a landscape scale.
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Affiliation(s)
- Xinchuang Wang
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, People's Republic of China
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Qi G, Wang QL, Wang XC, Yu DP, Zhou L, Zhou WM, Peng SL, Dai LM. [Soil organic carbon storage in different aged Larix gmelinii plantations in Great Xing' an Mountains of Northeast China]. Ying Yong Sheng Tai Xue Bao 2013; 24:10-16. [PMID: 23717984] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A sampling plot investigation was conducted to study the soil organic carbon (SOC) storage in 0-40 cm layer in 10-, 15-, 26- and 61 years old Larix gmelinii plantations in Great Xing' an Mountains of Northeast China as well as the temporal variation pattern of the SOC source/sink during the plantation management after the clear cutting of primary L. gmelinii forest. With the increasing age of the plantations, the SOC storage increased after an initial decrease, and the inflection point was at a stand age between 15- and 26-years old. Compared with that of primary forest, the SOC storage of the plantations played a role of carbon source at early stage (10-26 years old), but gradually transformed into carbon sink then, with a SOC storage of 158.91 t x hm(-2) in 61-year-old plantation. The SOC storage of the plantations increased with soil depth initially, but was higher in upper soil layer than in deeper soil layer after the stand age being 26, which implied that human disturbance had strong effects on the vertical distribution of SOC. It was considered that the appropriate cutting age for the L. gmelinii plantations in Great Xing' an Mountains could be at least 60 years old.
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Affiliation(s)
- Guang Qi
- Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China.
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Wang H, Zhao Y, Ma J, Zhang G, Mu Y, Qi G, Fang Z, Wang L, Fan Q, Ma Z. Short Communication The genetic variant rs401681C/T is associated with the risk of non-small cell lung cancer in a Chinese mainland population. Genet Mol Res 2013; 12:67-73. [DOI: 10.4238/2013.january.22.5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [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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Zuo R, Hu R, Chai G, Xu M, Qi G, Kong Y, Zhou G. Genome-wide identification, classification, and expression analysis of CDPK and its closely related gene families in poplar (Populus trichocarpa). Mol Biol Rep 2012; 40:2645-62. [PMID: 23242656 DOI: 10.1007/s11033-012-2351-z] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Accepted: 12/09/2012] [Indexed: 11/26/2022]
Abstract
Calcium-dependent protein kinases (CDPKs) are Ca(2+)-binding proteins known to play crucial roles in Ca(2+) signal transduction pathways which have been identified throughout plant kingdom and in certain types of protists. Genome-wide analysis of CDPKs have been carried out in Arabidopsis, rice and wheat, and quite a few of CDPKs were proved to play crucial roles in plant stress responsive signature pathways. In this study, a comprehensive analysis of Populus CDPK and its closely related gene families was performed, including phylogeny, chromosome locations, gene structures, and expression profiles. Thirty Populus CDPK genes and twenty closely related kinase genes were identified, which were phylogenetically clustered into eight distinct subfamilies and predominately distributed across fifteen linkage groups (LG). Genomic organization analyses indicated that purifying selection has played a pivotal role in the retention and maintenance of Populus CDPK gene family. Furthermore, microarray analysis showed that a number of Populus CDPK and its closely related genes differentially expressed across disparate tissues and under various stresses. The expression profiles of paralogous pairs were also investigated to reveal their evolution fates. In addition, quantitative real-time RT-PCR was performed on nine selected CDPK genes to confirm their responses to drought stress treatment. These observations may lay the foundation for future functional analysis of Populus CDPK and its closely related gene families to unravel their biological roles.
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Affiliation(s)
- Ran Zuo
- CAS Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and BioProcess Technology, Chinese Academy of Sciences, Qingdao, Shandong, People's Republic of China.
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Chai G, Hu R, Zhang D, Qi G, Zuo R, Cao Y, Chen P, Kong Y, Zhou G. Comprehensive analysis of CCCH zinc finger family in poplar (Populus trichocarpa). BMC Genomics 2012; 13:253. [PMID: 22708723 PMCID: PMC3427045 DOI: 10.1186/1471-2164-13-253] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Accepted: 06/05/2012] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND CCCH zinc finger proteins contain a typical motif of three cysteines and one histidine residues and serve regulatory functions at all stages of mRNA metabolism. In plants, CCCH type zinc finger proteins comprise a large gene family represented by 68 members in Arabidopsis and 67 in rice. These CCCH proteins have been shown to play diverse roles in plant developmental processes and environmental responses. However, this family has not been studied in the model tree species Populus to date. RESULTS In the present study, a comprehensive analysis of the genes encoding CCCH zinc finger family in Populus was performed. Using a thorough annotation approach, a total of 91 full-length CCCH genes were identified in Populus, of which most contained more than one CCCH motif and a type of non-conventional C-X(11)-C-X(6)-C-X(3)-H motif was unique for Populus. All of the Populus CCCH genes were phylogeneticly clustered into 13 distinct subfamilies. In each subfamily, the gene structure and motif composition were relatively conserved. Chromosomal localization of these genes revealed that most of the CCCHs (81 of 90, 90 %) are physically distributed on the duplicated blocks. Thirty-four paralogous pairs were identified in Populus, of which 22 pairs (64.7 %) might be created by the whole genome segment duplication, whereas 4 pairs seem to be resulted from tandem duplications. In 91 CCCH proteins, we also identified 63 putative nucleon-cytoplasm shuttling proteins and 3 typical RNA-binding proteins. The expression profiles of all Populus CCCH genes have been digitally analyzed in six tissues across different developmental stages, and under various drought stress conditions. A variety of expression patterns of CCCH genes were observed during Populus development, of which 34 genes highly express in root and 22 genes show the highest level of transcript abundance in differentiating xylem. Quantitative real-time RT-PCR (RT-qPCR) was further performed to confirm the tissue-specific expression and responses to drought stress treatment of 12 selected Populus CCCH genes. CONCLUSIONS This study provides the first systematic analysis of the Populus CCCH proteins. Comprehensive genomic analyses suggested that segmental duplications contribute significantly to the expansion of Populus CCCH gene family. Transcriptome profiling provides first insights into the functional divergences among members of Populus CCCH gene family. Particularly, some CCCH genes may be involved in wood development while others in drought tolerance regulation. Our results presented here may provide a starting point for the functional dissection of this family of potential RNA-binding proteins.
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Affiliation(s)
- Guohua Chai
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, PR China
| | - Ruibo Hu
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, PR China
| | - Dongyuan Zhang
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, PR China
| | - Guang Qi
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, PR China
| | - Ran Zuo
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, PR China
| | - Yingping Cao
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, PR China
| | - Peng Chen
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, PR China
| | - Yingzhen Kong
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA, 30602, USA
| | - Gongke Zhou
- Key Laboratory of Biofuels, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, PR China
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Xie X, Wang Q, Dai L, Su D, Wang X, Qi G, Ye Y. Application of China's National Forest Continuous Inventory database. Environ Manage 2011; 48:1095-1106. [PMID: 21761247 DOI: 10.1007/s00267-011-9716-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2010] [Accepted: 06/23/2011] [Indexed: 05/31/2023]
Abstract
The maintenance of a timely, reliable and accurate spatial database on current forest ecosystem conditions and changes is essential to characterize and assess forest resources and support sustainable forest management. Information for such a database can be obtained only through a continuous forest inventory. The National Forest Continuous Inventory (NFCI) is the first level of China's three-tiered inventory system. The NFCI is administered by the State Forestry Administration; data are acquired by five inventory institutions around the country. Several important components of the database include land type, forest classification and ageclass/ age-group. The NFCI database in China is constructed based on 5-year inventory periods, resulting in some of the data not being timely when reports are issued. To address this problem, a forest growth simulation model has been developed to update the database for years between the periodic inventories. In order to aid in forest plan design and management, a three-dimensional virtual reality system of forest landscapes for selected units in the database (compartment or sub-compartment) has also been developed based on Virtual Reality Modeling Language. In addition, a transparent internet publishing system for a spatial database based on open source WebGIS (UMN Map Server) has been designed and utilized to enhance public understanding and encourage free participation of interested parties in the development, implementation, and planning of sustainable forest management.
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Affiliation(s)
- Xiaokui Xie
- Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China.
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Wang XC, Qi G, Yu DP, Zhou L, Dai LM. [Carbon storage, density, and distribution in forest ecosystems in Jilin Province of northeast China]. Ying Yong Sheng Tai Xue Bao 2011; 22:2013-2020. [PMID: 22097362] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
By using forest resources inventory data and field investigation data, this paper studied the carbon storage, density, and distribution characteristics in forest ecosystems in Jilin Province of Northeast China. The total carbon storage in the forest ecosystems was 1827.293 Tg C, and the carbon storages in arbor layer, shrub-grass layer, litter layer, and soil were 439.152 Tg C, 5.195 Tg C, 45.600 Tg C, and 1330.466 Tg C, accounting for 24.1%, 0.3%, 2.5%, and 73.1% of the total, respectively. The carbon density in the forest ecosystems was 225.304 Mg C x hm(-2), with 54.352 Mg C x hm(-2) in arbor layer, 0.643 Mg C x hm(-2) in shrub-grass layer, 5.644 Mg C x hm(-2) in litter layer, and 164.666 Mg C x hm(-2) in soil. Different types of the forest ecosystems had a carbon storage varied from 9.357 Tg C to 959.716 Tg C and a carbon density ranged from 180.648 Mg C * hm(-2) to 254.627 Mg C x hm(-2), with the highest values in soil and the lowest values in shrub-grass layer. Overall, the carbon storage and density in the forest ecosystems were greater in eastern mountainous area than in central and western plains. In the Province, middle-aged forests had a greater proportion than the forests in other age classes, and thereby, a proper management of the present forests could increase the carbon sequestration of the forest ecosystems.
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Affiliation(s)
- Xin-chuang Wang
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China.
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Ren J, Yang M, Qi G, Zheng J, Jia L, Cheng J, Tian C, Li H, Lin X, Du J. Proinflammatory protein CARD9 is essential for infiltration of monocytic fibroblast precursors and cardiac fibrosis caused by Angiotensin II infusion. Am J Hypertens 2011; 24:701-7. [PMID: 21436792 PMCID: PMC3139445 DOI: 10.1038/ajh.2011.42] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background Angiotensin II (Ang II)–induced cardiac remodeling with the underlying mechanisms involving inflammation and fibrosis has been well documented. Cytosolic adaptor caspase recruitment domain 9 (CARD9) has been implicated in the innate immune response. We aimed to examine the role of CARD9 in inflammation and cardiac fibrosis induced by Ang II. Methods Two-month-old CARD9-deficient (CARD9−/−) and wild-type (WT) male mice were infused with Ang II (1,500 ng/kg/min) or saline for 7 days. Heart sections were stained with hematoxylin and eosin and Masson trichrome and examined by immunohistochemistry; and activity and protein levels were measured in macrophages obtained from mice. Results WT mice with Ang II infusion showed a marked increase in CARD9+ macrophages in the heart, but CARD9−/− mice showed significantly suppressed macrophage infiltration and expression of proinflammatory cytokines, including interleukin-1β (IL-1β) and connective tissue growth factor (CTGF). Importantly, Ang II–induced cardiac fibrosis (extracellular matrix and collagen I deposition) was diminished in CARD9−/− hearts, as was the expression of transforming growth factor-β (TGF-β) and level of myofibroblasts positive for α-smooth muscle actin (α-SMA). Furthermore, Ang II activation of nuclear factor-κB (NF-κB), JNK and p38 mitogen-activated protein kinases (MAPKs) in WT macrophages was reduced in CARD9−/− macrophages. Conclusion CARD9 plays an important role in regulating cardiac inflammation and fibrosis in response to elevated Ang II.
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Qi G, Lan N, Ma X, Yu Z, Zhao X. Controlling Myzus persicae with recombinant endophytic fungi Chaetomium globosum expressing Pinellia ternata agglutinin. J Appl Microbiol 2011; 110:1314-22. [DOI: 10.1111/j.1365-2672.2011.04985.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Qi G, Lu J, Zhang P, Li J, Zhu F, Chen J, Liu Y, Yu Z, Zhao X. The cry1Ac gene of Bacillus thuringiensis ZQ-89 encodes a toxin against long-horned beetle adult. J Appl Microbiol 2011; 110:1224-34. [DOI: 10.1111/j.1365-2672.2011.04974.x] [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: 11/28/2022]
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Qi G, Wang QL, Wang XC, Qi L, Wang QW, Ye YJ, Dai LM. [Vegetation carbon storage in Larix gmelinii plantations in Great Xing' an Mountains]. Ying Yong Sheng Tai Xue Bao 2011; 22:273-279. [PMID: 21608236] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Through sampling site investigation, this paper studied the carbon storage of arbor, herb, and whole vegetation in 10-, 12-, 15-, 26-, and 61-year old Larix gmelinii plantations in Huzhong Forestry Bureau of Great Xing' an Mountains, Northeast China, and 'temporal for spatial' method was employed to approach the variations of the vegetation carbon storage during the growth of the plantations. The results revealed that the vegetation carbon storage in the plantations increased with stand age, and reached 105.69 t x hm(-2) at age of 61 years, representing a marked role as a carbon sink. The L. gmelinii plantations at the ages from 15 to 26 years had the strongest capability in carbon sequestration, in which, the carbon storage in trunk occupied 54.3% -73.9% of the total carbon storage of arbor, and, with the increase of stand age, the trunk's carbon storage to the total carbon storage of arbor as well as the trunk's carbon density increased. As for the other organs, the rate of their carbon storage to the total carbon storage of arbor decreased with stand age, while their carbon density increased first but eventually leveled off or had a slight decrease till at age of 61 years. Based on these results, the rotation age for the L. gmelinii plantations in Great Xing' an Mountains would properly be lengthened to at least 60 years.
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Affiliation(s)
- Guang Qi
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
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Kwong W, Neilson AL, Hamilton RM, Chiu CC, Stephenson EA, Gross GJ, Soucie L, Kirsh JA, xian-hui Z, Bao-peng T, Jin-xin L, Yu Z, Yan-yi Z, Jiang-hua Z, Hirahara T, Sugawara Y, Suga C, Ako J, Momomura S, Ardashev AV, Zhelyakov EG, Konev AV, Rybachenko MS, Belenkov YN, Bai R, Di Biase L, Santangeli P, Saenz LC, Verma A, Sanchez J, Tondo C, Natale A, Safari F, Hajizadeh S, Mani A, Khoshbaten A, Foadoddini M, Forush SS, Bayat G, Kim SH, Chong D, Ching CK, Liew R, Galalardin, Khin MW, Teo WS, Chong D, Tan BY, Liew R, Ching CK, Teo WS, Sakamoto T, Al Mehairi M, Al Ghamdi SA, Dagriri K, Al Fagih A, Selvaraj R, Ezhumalai B, Satheesh S, Ajit A, Gobu P, Balachander J, Liu XQ, Zhou X, Yang G, Zhong GZ, Shi L, Tian Y, Li YB, Wang AH, Yang XC, Takenaka S, Ozaki H, Nakamura M, Otsuka M, Tsurumi Y, Nolker G, Gutleben KJ, Ritscher G, Sinha AM, Muntean B, Heintze J, Vogt J, Brachmann J, Horstkotte D, Katsuyuki T, Katsuyuki T, McGrew F, Johnson E, Coppess M, Fan I, Li S, Zhiyu L, Zengzhang L, Xianbin L, Yuehui Y, Min L, Shu-long Z, Dong C, Zhi-tao Z, Xian-jing W, Ying-xue D, Shu-Long Z, Dong C, Zhi-Tao Z, Xian-Jing W, Ying-Xue D, Liu P, Guo JH, Zhang Z, Li J, Liu HG, Zhang HC, Zvereva V, Rillig A, Meyerfeldt U, Jung W, Wei L, Qi G, Zhang Q, Xia Y, Doi A, Satomi K, Nakajima I, Makimoto H, Yokoyama T, Yamada Y, Okamura H, Noda T, Aiba T, Shimizu W, Aihara N, Kamakura S, Li Z, Zhao QY, Huang CX, Doi A, Satomi K, Nakajima I, Makimoto H, Yokoyama T, Yamada Y, Okamura H, Noda T, Aiba T, Shimizu W, Aihara N, Kamakura S, Min-Seok C, Jeong-Wook P, Young-Woong H, Sung-Eun P, Jae-Sun U, Yong-Seog O, Woo-Seung S, Ji-Hoon K, Seong-Won J, Man-Young L, Tae-Ho R, Uhm JS, Oh YS, Choi MS, Park JW, Ha YW, Park SE, Jang SW, Shin WS, Kim JH, Lee MY, Rho TH, Nielsen JB, Olesen MS, Tango M, Haunso S, Holst AG, Svendsen JH, Poci D, Thogersen AM, Riahi S, Linde P, Edvardsson N, Khoo CW, Krishnamoorthy S, Dwivedi G, Balakrishnan B, Lim HS, Lip GYH, Khoo CW, Krishnamoorthy S, Dwivedi G, Balakrishnan B, Lim HS, Lip GYH, D'Ascia S, D'ascia C, Marino V, Chiariello M, Santulli G, Music L, Anderson K, Benzaquen BS, Saponieri C, Yassin H, Fridman V, Vasavada BC, Turitto G, El-Sherif N, Saponieri C, Prabhu H, Yassin H, Fridman V, Huang Y, Vasavada BC, Turitto G, El-Sherif N, Ortega MC, Sosa ESH, Ugalde AN, Al Jamil A, Abu Siddique M, Haque KMHSS, Suga C, Hirahara T, Sugawara Y, Ako J, Momomura SI, Mlynarski R, Mlynarska A, Ilczuk G, Mlynarski R, Mlynarska A, Wilczek J, Mlynarska A, Mlynarski R, Wilczek J, Mlynarska A, Mlynarski R, Wilczek J, Sosnowski M, Kohno R, Abe H, Nagatomo T, Oginosawa Y, Minamiguchi H, Otsuji Y, Kohno R, Abe H, Minamiguchi H, Oginosawa Y, Nagatomo T, Otsuji Y, Minamiguchi H, Abe H, Kohno R, Oginosawa Y, Otsuji Y, Ekinci S, Yesil M, Bayata S, Vurgun VK, Arikan E, Postaci N, Xiaoqing R, Jielin P, Shu Z, Liang M, Fangzheng W, Takahashi K, Tokano T, Nakazato Y, Doi S, Shiozawa T, Konishi H, Hiki M, Kato Y, Komatsu S, Takahashi S, Kubota N, Tamura H, Suwa S, Ohki M, Katsumata T, Kizu K, Bito F, Sumiyoshi M, Juntendo HD, Yamada Y, Okamura H, Nakajima I, Doi A, Makimoto H, Yukoyama T, Noda T, Satomi K, Aiba T, Shimizu W, Aihara N, Kamakura S, Perna F, Leo M, Leccisotti L, Casella M, Pelargonio G, Lago M, Bencardino G, Narducci ML, Russo E, Santangeli P, Giordano A, Bellocci F, Song T, Yang J, Huang C, Zhang J, Huang C, Wu P, Yang J, Song T, Chen Y, Fan X, Wang T, Wang X, Tang Y, Wu P, Huang CX, Zhang J, Fan XR, Chen YJ, Li XW, Yang J, Song T, Chiu CC, Buescher T, Obias-Manno D, Yoo CJ, Huh J, Ortega MC, Nakanishi H, Hirata A, Wada M, Kashiwase K, Okada M, Ueda Y, Su D, Niu XL, Song AQ, Kohno R, Abe H, Minamiguchi H, Oginosawa Y, Nagatomo T, Otsuji Y, Fujii S, Yambe Y, Shiiba K, Sakakibara M, Takenaka S, Watanabe A, Wada T, Koide Y, Ikeda M, Toda H, Hashimoto K, Terasaka R, Nakahama M, Wada T, Watanabe A, Koide Y, Ikeda M, Toda H, Hashimoto K, Terasaka R, Nakahama M, Okada Y, Mizuno H, Ide H, Ueno T, Kogaki S, Ozono K, Nanto S, Statescu C, Bercea R, Sascau RA, Georgescu CA, Ortega MC, Athanas E, Ortega MC, Athanas E, Mironov NY, Bakalov SA, Jarova EA, Rodionova ES, Mironova NA, Kim J, Ahn MS, Han DC, Choo JTL, Chen CK, Tan TH, Ong KK, Kam R, Curnis A, Bontempi L, Coppola G, Cerini M, Vassanelli F, Lipari A, Gennaro F, Pagnoni C, Ashofair N, Cas LD, Gourineni V, Wong KL, Davoudi R, Hamid N, Chong D, Yew TB, Liew R, Keong CC, Siong TW, Fuke E, Shimizu H, Kimura S, Hao K, Watanabe R, Seo JB, Chung WY, Kim SH, Kim MA, Zo ZH, Krishinan S, Skuratova NA, Belyaeva LM, Bae MH, Lee JH, Lee HS, Yang DH, Park HS, Cho Y, Chae SC, Jun JE, Rychkova LV, Dolgikh VV, Zurbanova LV, Zurbanov AV, Aleksanyan A, Matevosyan A, Podosyan G, Zelveian P, Aleksanyan A, Podosyan G, Matevosyan A, Zelveian P, Choi HO, Nam GB, Kim YR, Kim KH, Kim SH, Choi KJ, Kim YH, Pakpahan HAP, Wei D, Qizhu T, Xiaofei Y, Kai G, Siting F, Ji H, Sato A, Tanabe Y, Hayashi Y, Yoshida T, Ito E, Chinushi M, Hasegawa K, Yagihara N, Iijima K, Izumi D, Watanabe H, Furushima H, Aizawa Y, Dong YX, Dong YX, Burnett JC, Chen HH, Sandberg S, Zhang Y, Chen PS, Cha YM, Mlynarski R, Mlynarska A, Wilczek J, Sosnowski M, Zhou XH, Tang BP, Li JX, Zhang Y, Li YD, Zhang JH, Arsenos P, Gatzoulis K, Gialernios T, Dilaveris P, Sideris S, Archontakis S, Tsiachris D, Christodoulos S, Feng Z, Baogui S, Li L, Ming L, Bai R, Di Biase L, Mohanty P, Hesselson AB, De Ruvo E, Gallagher PL, Minati M, Natale LCA, Tomassoni GF, Gan T, Tang B, Xu G, Li J, Zhang Y, Zhou X, Zhang Y, Hosoda J, Ishikawa T, Matsushita K, Matsumoto K, Kimura Y, Miyamoto M, Sugano T, Ishigami T, Uchino K, Kimura K, Umemura S, Nakajima I, Noda T, Shimizu W, Yokoyama T, Makimoto H, Doi A, Yamada Y, Okamura H, Satomi K, Aiba T, Aihara N, Kamakura S, Nakajima I, Noda T, Shimizu W, Kurita T, Yokoyama T, Makimoto H, Doi A, Yamada Y, Okamura H, Satomi K, Aiba T, Aihara N, Kamakura S, Wang T, Huang CX, Wang T, Huang CX, Ruan L, Zhang C, Cai S, Bai R, Liu N, Ruan Y, Quan X, Kang JK, Kim NY, Park SH, Lee JH, Park HS, Cho Y, Chae SC, Jun JE, Park WH, Sapelnikov OV, Latypov RS, Grishin IR, Mareev YV, Saidova MA, Akchurin RS, Arsenos P, Gatzoulis K, Manis G, Dilaveris P, Archontakis S, Tsiachris D, Mytas D, Papafanis T, Papavasileiou MV, Stefanadis C, Ren LN, Fang XH, Wang YQ, Qi GX, Zeng QX, Zheng ZT, Zhong JQ, Wang YL, Liu HZ, Liu DL, Meng XL, Li JS, Zhang Y, Liu HZ, Zhong JQ, Zeng QX, Liu DL, Meng XL, Li JS, Su GY, Wang J, Zhang Y, Liu HZ, Zhong JQ, Zeng QX, Wang YL, Liu DL, Meng XL, Li JS, Su GY, Zhang Y, Li JS, Zhong JQ, Zeng QX, Liu HZ, Su GY, Zhang Y, Li JS, Zhong JQ, Zeng QX, Liu HZ, Meng XL, Liu DL, Su GY, Zhang Y, Li JS, Zhong JQ, Zeng QX, Liu HZ, Meng XL, Liu DL, Su GY, Zhang Y, Nicolson WB, Kundu S, Tyagi N, Meatcher PDS, Yusuf S, Jeilan M, Stafford PJ, Sandilands AJ, Loke I, Ng GA, Nicolson WB, Kundu S, Tyagi N, Meatcher PDS, Yusuf S, Jeilan M, Stafford PJ, Sandilands AJ, Loke I, Ng GA, Solak Y, Gul EE, Atalay H, Abdulhalikov T, Kayrak M, Turk S, Kang JK, Kim NY, Park SH, Lee JH, Park HS, Cho Y, Chae SC, Jun JE, Park WH, Belyaeva LM, Skuratova NA, Pogodina AV, Dolgikh VV, Valjavskaja OV, Zurbanov AV, Chen YX, Luo NS, Wang JF, Zhang S, Ishimaru S, Miyakawa M, Kakinoki R, Tadokoro M, Kitani S, Sugaya T, Nishimura K, Igarashi T, Okabayashi H, Furuya J, Igarashi Y, Igarashi K, Su T, Winlaw D, Chard R, Nicholson I, Sholler G, Lau K, Sun Q, Cheng KP, Cheng R, Hua W, Pu JL, Zhang S, Lim CP, Chan LL, Teo LW, Kwok BWK, Sim DKL, Ching CK, Lim CP, Chan LL, Teo LW, Kwok BWK, Sim DKL, Ching CK, Curnis A, Bontempi L, Cerini M, Lipari A, Vassanelli F, Pagnoni C, Ashofair N, Moneghini D, Cestari R, Cas LD, Al Fagih A, Al Shurafa H, Al Ghamdi S, Dagriri K, Al Khadra A, Iijima K, Chinushi M, Hasegawa K, Yagihara N, Sato A, Izumi D, Watanabe H, Furushima H, Aizawa Y, Furushima H, Chinushi M, Iijima K, Izumi D, Hasegawa K, Yagihara N, Watanabe H, Sato A, Aizawa Y, Agacdiken A, Yalug I, Vural A, Celikyurt U, Ural D, Aker T, Agacdiken A, Yalug I, Vural A, Celikyurt U, Ural D, Aker T, Heintze J, Schloss E, Auricchio A, Zeng C, Sterns L, Farooqi F, Kamdar R, Adhya S, Bayne S, Jackson T, Pollock L, Sterns L, Gall N, Murgatroyd F, Guo Y, Wang Y, Yang T, Zhu P, Liu H, Zhao Y, Zhang L, Gao W, Gao M. Poster presentation. Europace 2011. [DOI: 10.1093/europace/euq492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Wang QW, Yu DP, Dai LM, Zhou L, Zhou WM, Qi G, Qi L, Ye YJ. [Research progress in water use efficiency of plants under global climate change]. Ying Yong Sheng Tai Xue Bao 2010; 21:3255-3265. [PMID: 21443017] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Global climate change is one of the most concerned environmental problems in the world since the 1980s, giving significant effects on the plant productivity and the water transport and use patterns. These effects would be reflected in the water use efficiency (WUE) of individual plants, communities, and ecosystems, and ultimately, in the vegetation distribution pattern, species composition, and ecosystem structure. To study the WUE of plants would help to the understanding and forecasting of the responses of terrestrial vegetation to global climate change, and to the adoption of adaptive strategies. This paper introduced the concept of plant WUE and the corresponding measurement techniques at the scales of leaf, individual plant, community, and ecosystem, and reviewed the research progress in the effects of important climatic factors such as elevated atmospheric CO2 concentration, precipitation pattern, nitrogen deposition, and their combination on the plant WUE, as well as the variation characteristics of plant WUE and the adaptive survival strategies of plants under different site conditions. Some problems related to plant WUE research were pointed out, and the future research directions in the context of global climate change were prospected.
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Affiliation(s)
- Qing-wei Wang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
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Hu R, Qi G, Kong Y, Kong D, Gao Q, Zhou G. Comprehensive analysis of NAC domain transcription factor gene family in Populus trichocarpa. BMC Plant Biol 2010; 10:145. [PMID: 20630103 PMCID: PMC3017804 DOI: 10.1186/1471-2229-10-145] [Citation(s) in RCA: 281] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Accepted: 07/15/2010] [Indexed: 05/18/2023]
Abstract
BACKGROUND NAC (NAM, ATAF1/2 and CUC2) domain proteins are plant-specific transcriptional factors known to play diverse roles in various plant developmental processes. NAC transcription factors comprise of a large gene family represented by more than 100 members in Arabidopsis, rice and soybean etc. Recently, a preliminary phylogenetic analysis was reported for NAC gene family from 11 plant species. However, no comprehensive study incorporating phylogeny, chromosomal location, gene structure, conserved motifs, and expression profiling analysis has been presented thus far for the model tree species Populus. RESULTS In the present study, a comprehensive analysis of NAC gene family in Populus was performed. A total of 163 full-length NAC genes were identified in Populus, and they were phylogenetically clustered into 18 distinct subfamilies. The gene structure and motif compositions were considerably conserved among the subfamilies. The distributions of 120 Populus NAC genes were non-random across the 19 linkage groups (LGs), and 87 genes (73%) were preferentially retained duplicates that located in both duplicated regions. The majority of NACs showed specific temporal and spatial expression patterns based on EST frequency and microarray data analyses. However, the expression patterns of a majority of duplicate genes were partially redundant, suggesting the occurrence of subfunctionalization during subsequent evolutionary process. Furthermore, quantitative real-time RT-PCR (RT-qPCR) was performed to confirm the tissue-specific expression patterns of 25 NAC genes. CONCLUSION Based on the genomic organizations, we can conclude that segmental duplications contribute significantly to the expansion of Populus NAC gene family. The comprehensive expression profiles analysis provides first insights into the functional divergence among members in NAC gene family. In addition, the high divergence rate of expression patterns after segmental duplications indicates that NAC genes in Populus are likewise to have been retained by substantial subfunctionalization. Taken together, our results presented here would be helpful in laying the foundation for functional characterization of NAC gene family and further gaining an understanding of the structure-function relationship between these family members.
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Affiliation(s)
- Ruibo Hu
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China
| | - Guang Qi
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China
| | - Yingzhen Kong
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China
- Current address: Complex Carbohydrate Research Center, The University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA
| | - Dejing Kong
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China
| | - Qian Gao
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China
| | - Gongke Zhou
- Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, PR China
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Yang H, Dib HH, Zhu M, Qi G, Zhang X. Prices, availability and affordability of essential medicines in rural areas of Hubei Province, China. Health Policy Plan 2009; 25:219-29. [DOI: 10.1093/heapol/czp056] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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