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Ma YY, Pu G, Liu HY, Yao S, Kong GH, Wu YP, Li YK, Wang WG, Zhou M, Hu QF, Yang FX. Indole alkaloids isolated from the Nicotiana tabacum-derived Aspergillus fumigatus 0338 as potential inhibitors for tobacco powdery mildew and their mode of actions. Pestic Biochem Physiol 2024; 200:105814. [PMID: 38582586 DOI: 10.1016/j.pestbp.2024.105814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/02/2024] [Accepted: 02/03/2024] [Indexed: 04/08/2024]
Abstract
To explore active natural products against tobacco powdery mildew caused by Golovinomyces cichoracearum, an extract from the fermentation of endophytic Aspergillus fumigatus 0338 was investigated. The mechanisms of action for active compounds were also studied in detail. As a result, 14 indole alkaloid derivatives were isolated, with seven being newly discovered (1-7) and the remaining seven previously described (8-14). Notably, compounds 1-3 are rare linearly fused 6/6/5 tricyclic prenylated indole alkaloids, with asperversiamide J being the only known natural product of this kind. The isopentenyl substitutions at the 5-position in compounds 4 and 5 are also rare, with only compounds 1-(5-prenyl-1H-indol-3-yl)-propan-2-one (8) and 1-(6-methoxy-5-prenyl-1H-indol3-yl)-propan-2-one currently available. In addition, compounds 6 and 7 are new framework indole alkaloid derivatives bearing a 6-methyl-1,7-dihydro-2H-azepin-2-one ring. The purified compounds were evaluated for their activity against G. cichoracearum, and the results revealed that compounds 7 and 9 demonstrated obvious anti-G. cichoracearum activities with an inhibition rate of 82.6% and 85.2%, respectively, at a concentration of 250 μg/mL, these rates were better than that of the positive control agent, carbendazim (78.6%). The protective and curative effects of compounds 7 and 9 were also better than that of positive control, at the same concentration. Moreover, the mechanistic study showed that treatment with compound 9 significantly increased the structural tightness of tobacco leaves and directly affect the conidiospores of G. cichoracearum, thereby enhancing resistance. Compounds 7 and 9 could also induce systemic acquired resistance (SAR), directly regulating the expression of defense enzymes, defense genes, and plant semaphorins, which may further contribute to increased plant resistance. Based on the activity experiments and molecular dockings, the indole core structure may be the foundation of these compounds' anti-G. cichoracearum activity. Among them, the indole derivative parent structures of compounds 6, 7, and 9 exhibit strong effects. Moreover, the methoxy substitution in compound 7 can enhance their activity. By isolating and structurally identifying the above indole alkaloids, new candidates for anti-powdery mildew chemical screening were discovered, which could enhance the utilization of N. tabacum-derived fungi in pesticide development.
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Affiliation(s)
- Yue-Yu Ma
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China; Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, PR China
| | - Gui Pu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China
| | - Hua-Yin Liu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China
| | - Sui Yao
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China
| | - Guang-Hui Kong
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650031, PR China
| | - Yu-Ping Wu
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650031, PR China
| | - Yin-Ke Li
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, PR China; Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650031, PR China
| | - Wei-Guang Wang
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, PR China
| | - Min Zhou
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, PR China
| | - Qiu-Fen Hu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China; Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, PR China.
| | - Feng-Xian Yang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China; Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, PR China.
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Yang FX, Ma YY, Wu YP, Zhao GK, Li YP, Li ZJ, Li XM, Li YK, Wang WG, Zhou M, Kong GH, Hu QF. Extraction and characterization of anti-virus anthraquinones from Nicotiana tabacum-derived Aspergillus oryzae YNCA1220. Pestic Biochem Physiol 2023; 196:105613. [PMID: 37945230 DOI: 10.1016/j.pestbp.2023.105613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/19/2023] [Accepted: 09/06/2023] [Indexed: 11/12/2023]
Abstract
In this study, seven novel anthraquinones (1-7) and four described anthraquinones (8-11) were purified from Nicotiana tabacum-derived Aspergillus oryzae YNCA1220. It is worth noting that only analogs of 4 and 5 have been reported as natural products to date, while the nuclei of compounds 1-3, 6 and 7 were isolated for the first time in nature. Among them, compounds 1-3 bear an unusual anthra[2,3-b]furan-9,10-dione nucleus, 4 and 5 possess a rare 3-methyl-1H-pyrrol-2-yl substituent, and 6 and 7 are new framework anthraquinones bearing a 6-methyl-1,7-dihydro-2H-azepin-2-one ring. Interestingly, the in vivo assays indicated that 1, 4 and 5 had inactivation effects against tobacco mosaic virus (TMV) with inhibition rates of 41.6%, 55.4% and 38.6%, respectively, at a concentration of 50 μg/mL, which were better than that of the positive control agent, ningnanmycin (33.8%). Compounds 1, 4 and 5 also had protective effects with inhibition rates of 48.7%, 60.2% and 43.5% at the same concentration, while 4 had a better curative effect than ningnanmycin at a concentration of 100 μg/mL. In addition, mechanistic studies also revealed that a potent direct effect on TMV, the induction of SAR in tobacco plants, and the effective regulation of defense enzymes, defense genes, and defense hormones may be the reasons for the significant effects of 4 against TMV. At the same time, downregulation of the expression of total NtHsp70 protein by inhibiting the related Hsp70 genes may also be involved in tobacco resistance to TMV. To evaluate whether compounds have broader antiviral activities, the antirotavirus activities of new isolates were also evaluated and found to be highly effective with a therapeutic index (TI) value ranging from 11.6 to 17.7. This study suggests that the above anthraquinone compounds, particularly 4, have broad spectrum antiviral activities. The successful isolation and structure identification of the above anthraquinones provide new materials for the screening of anti-TMV agents and contribute to the improved utilization of N. tabacum-derived fungi.
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Affiliation(s)
- Feng-Xian Yang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China; Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, PR China
| | - Yue-Yu Ma
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China
| | - Yu-Ping Wu
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650031, PR China
| | - Gao-Kun Zhao
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650031, PR China
| | - Yong-Ping Li
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650031, PR China
| | - Zhen-Jie Li
- Yunnan Key Laboratory of Tobacco Chemistry, China Tobacco Yunnan Industrial Co., Ltd., Kunming 650031, PR China
| | - Xue-Mei Li
- Yunnan Key Laboratory of Tobacco Chemistry, China Tobacco Yunnan Industrial Co., Ltd., Kunming 650031, PR China
| | - Yin-Ke Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China; Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650031, PR China
| | - Wei-Guang Wang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China
| | - Min Zhou
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China
| | - Guang-Hui Kong
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650031, PR China.
| | - Qiu-Fen Hu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, PR China; Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650031, PR China.
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Liu HY, Yang FX, Dai JM, Liang MJ, Xiong W, Mi QL, Li XM, Wang K, Deng L, Hu Q, Zhang JD. Isochromenes from the Nicotiana tabacum-Derived Endophytic Fungus Aspergillus versicolor and Their Bioactivities. Chem Nat Compd 2023. [DOI: 10.1007/s10600-023-03913-z] [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: 03/28/2023]
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Yang PS, He XY, Li SS, Huang DQ, Shen SY, Liu XS, Ma YY, Dong M, Zhou M, Yang FX, Li YK. Three new chromones from the whole plants of Chamaecrista rotundifolia and their anti-rotavirus activities. Nat Prod Res 2023:1-8. [PMID: 36787178 DOI: 10.1080/14786419.2023.2177286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 01/20/2023] [Accepted: 01/29/2023] [Indexed: 02/15/2023]
Abstract
Chamaecrista rotundifolia (C. rotundifolia) is a perennial herb of leguminosae, which increasingly being grown as a forage in China. In our search for original bioactive metabolites from Cassia plants, the phytochemical reinvestigation of the C. rotundifolia was carried out, which led to the isolation of three new (1-3) and six known (4-9) chromones. Their structures were confirmed by spectroscopic methods, including extensive 1D and 2D NMR techniques. Compounds 1-9 were evaluated for their anti-rotavirus activities, and the results revealed that compounds 1-9 exhibited potential anti-rotavirus activities with therapeutic index (TI) valves in the range of 12.0 ∼ 20.2, respectively.
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Affiliation(s)
- Pei-Song Yang
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Xin-Yan He
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
- School of Animal Science and Technology, Southwest University, Chongqing, P. R. China
| | - Shan-Shan Li
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - De-Quan Huang
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Si-Yu Shen
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Xiao-Shan Liu
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Yue-Yu Ma
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
- Yunnan Key Laboratory of Tobacco Chemistry, China Tobacco Yunnan Industrial Co., Ltd, Kunming, P.R. China
| | - Miao Dong
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Min Zhou
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Feng-Xian Yang
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
- Yunnan Key Laboratory of Tobacco Chemistry, China Tobacco Yunnan Industrial Co., Ltd, Kunming, P.R. China
| | - Yin-Ke Li
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
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Yang GY, Dai JM, Li ZJ, Wang J, Yang FX, Liu X, Li J, Gao Q, Li XM, Li YK, Wang WG, Zhou M, Hu QF. Isoindolin-1-ones from the stems of Nicotiana tabacum and their antiviral activities. Arch Pharm Res 2022; 45:572-583. [DOI: 10.1007/s12272-022-01399-x] [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] [Received: 03/07/2022] [Accepted: 07/31/2022] [Indexed: 11/29/2022]
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Liu HY, Yang FX, Liang MJ, Huang HT, Liu X, Li XM, Kong WS, Mi QL, Guo YD, Yang GY, Deng L, Zhang JD. Two New Furo[3,2-c]Quinolines from the Stems of Nicotiana tabacum and Their Anti-Tobacco Mosaic Virus Activity. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03773-z] [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: 10/15/2022]
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Yang FX, Dai JM, Liu HY, Mi QL, Wang J, Zhang JD, Li XM, Wang WG, Zhou M, Li YK, Hu QF. Isochromenes from the Nicotiana tabacum-derived endophytic fungus Aspergillus versicolor and their anti-tobacco mosaic virus activities. Nat Prod Res 2022; 37:1608-1616. [PMID: 35867012 DOI: 10.1080/14786419.2022.2103554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Three new isochromenes, (5-methoxy-7-prenyl-1H-isochromen-3-yl)methanol (1), 3-(3-(hydroxymethyl)-5-methoxy-1H-isochromen-7-yl)propan-1-ol (2), and (5-methoxy-7-methyl-1H-isochromen-3-yl)methanol (3), along with three known analogues (4-6) were isolated from the fermentation products of a Nicotiana tabacum-derived endophytic fungus Aspergillus versicolor. Their structures were elucidated by spectroscopic methods, including extensive 1 D and 2 D NMR techniques. Compounds 1-3 and 6 were evaluated for their anti-tobacco mosaic virus (anti-TMV) activities. The results showed that compound 2 exhibited high anti-TMV activity with inhibition rate of 46.4%, and this rate is higher than that of positive control. Compounds 1, 3, and 6 also showed potential anti-TMV activity with inhibition rates of 28.6, 30.5, and 26.2%, respectively. The IC50 of compounds 1-3 and 6 were also tested, and showed IC50 values of 49.3, 22.4, 42.2, and 54.1 µM, respectively.
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Affiliation(s)
- Feng-Xian Yang
- Yunnan Key Laboratory of Tobacco Chemistry, China tobacco yunnan industrial Co., Ltd, Kunming, P.R. China
| | - Jia-Meng Dai
- Yunnan Key Laboratory of Tobacco Chemistry, China tobacco yunnan industrial Co., Ltd, Kunming, P.R. China
| | - Hua-Yin Liu
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, P.R. China
| | - Qi-Li Mi
- Yunnan Key Laboratory of Tobacco Chemistry, China tobacco yunnan industrial Co., Ltd, Kunming, P.R. China
| | - Jin Wang
- Yunnan Key Laboratory of Tobacco Chemistry, China tobacco yunnan industrial Co., Ltd, Kunming, P.R. China
| | - Jian-Duo Zhang
- Yunnan Key Laboratory of Tobacco Chemistry, China tobacco yunnan industrial Co., Ltd, Kunming, P.R. China
| | - Xue-Mei Li
- Yunnan Key Laboratory of Tobacco Chemistry, China tobacco yunnan industrial Co., Ltd, Kunming, P.R. China
| | - Wei-Guang Wang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming, P.R. China
| | - Min Zhou
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming, P.R. China
| | - Yin-Ke Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming, P.R. China
| | - Qiu-Fen Hu
- Yunnan Key Laboratory of Tobacco Chemistry, China tobacco yunnan industrial Co., Ltd, Kunming, P.R. China.,Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming, P.R. China
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Wang Z, Yang FX, Liu C, Wang L, Qi Y, Cao M, Guo X, Li J, Huang X, Yang J, Huang SX. Isolation and Biosynthesis of Phenazine-Polyketide Hybrids from Streptomyces sp. KIB-H483. J Nat Prod 2022; 85:1324-1331. [PMID: 35574837 DOI: 10.1021/acs.jnatprod.2c00067] [Citation(s) in RCA: 1] [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] [Indexed: 06/15/2023]
Abstract
A phenazine-polyketide hybrid compound, nexphenazine A (1), was isolated from Streptomyces sp. KIB-H483. The bioinformatic analysis of the draft genome of the producing strain and gene inactivation experiments revealed that the biosynthesis of 1 involves a phenazine-polyketide hybrid gene cluster. The abolished production of 1 as well as the accumulation of shunt metabolites 4-7 in mutant strain ΔnpzI revealed the key role of the npzI gene, which encodes an NAD(P)H-dependent ketoreductase, in nexphenazine biosynthesis. The structures and absolute configurations of the isolated intermediates were established on the basis of spectroscopic data analysis, single-crystal X-ray diffraction, chiral chromatography, and chemical conversion experiments. NpzI exhibited stereochemical selectivity in reducing the carbonyl group of 4. Nexphenazine biosynthesis is proposed to involve a condensation of the carboxyl group of phenazine with one molecule of methylmalonyl-CoA by a type I PKS, followed by a ketone reduction by NpzI and an unknown methylation reaction.
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Affiliation(s)
- Zhiyan Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
- University of the Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Feng-Xian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Chongxi Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Yuxin Qi
- State Key Laboratory of Phytochemistry and Plant Resources in West China and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua 418000, People's Republic of China
| | - Minghang Cao
- State Key Laboratory of Phytochemistry and Plant Resources in West China and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Xiaowei Guo
- State Key Laboratory of Phytochemistry and Plant Resources in West China and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Jie Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
- University of the Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xueshuang Huang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua 418000, People's Republic of China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China and CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
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Zhou T, Gao Q, Mi QL, Yang FX, Wu F, Zhu YN, Liu L, Li J, Liu X, Kong WS, Yang GY, Hu QF, Li XM. Two New Benzo[C]Azepin-1-Ones from Whole Plants of Thalictrum glandulosissimum and their Antibacterial Activity. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03653-6] [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: 11/24/2022]
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Zhou T, Yang FX, Cai BB, Wu F, Zhu YN, Liu L, Liu CB, Ling J, Kong WS, Yang GY, Hu QF, Liu X. Anti-Tobacco Mosaic Virus Chromone Derivatives from the Stems of Nicotiana tabacum. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03540-6] [Citation(s) in RCA: 1] [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: 10/19/2022]
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Yang FX, Zhou T, Zhang JD, Liu X, Xu L, Jiang JR, Deng LL, Yang WW, Li XM, Yang GY. Anti-Tobacco Mosaic Virus Isoindolin-1-ones from the Stems of Nicotiana tabacum. HETEROCYCLES 2021. [DOI: 10.3987/com-21-14435] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Yu Z, Jiang H, Wang L, Yang FX, Huang JP, Liu C, Guo X, Xiang W, Huang SX. Corrigendum: Dimeric Pimprinine Alkaloids From Soil-Derived Streptomyces sp. NEAU-C99. Front Chem 2020; 8:717. [PMID: 32974281 PMCID: PMC7466438 DOI: 10.3389/fchem.2020.00717] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 07/13/2020] [Indexed: 11/22/2022] Open
Affiliation(s)
- Zhiyin Yu
- Heilongjiang Provincial Key Laboratory of Agricultural Microbiology, Northeast Agricultural University, Harbin, China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Hao Jiang
- Heilongjiang Provincial Key Laboratory of Agricultural Microbiology, Northeast Agricultural University, Harbin, China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Feng-Xian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Jian-Ping Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Chongxi Liu
- Heilongjiang Provincial Key Laboratory of Agricultural Microbiology, Northeast Agricultural University, Harbin, China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Xiaowei Guo
- Heilongjiang Provincial Key Laboratory of Agricultural Microbiology, Northeast Agricultural University, Harbin, China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Wensheng Xiang
- Heilongjiang Provincial Key Laboratory of Agricultural Microbiology, Northeast Agricultural University, Harbin, China
- *Correspondence: Wensheng Xiang
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- Sheng-Xiong Huang
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Yu Z, Jiang H, Wang L, Yang FX, Huang JP, Liu C, Guo X, Xiang W, Huang SX. Dimeric Pimprinine Alkaloids From Soil-Derived Streptomyces sp. NEAU-C99. Front Chem 2020; 8:95. [PMID: 32133345 PMCID: PMC7040024 DOI: 10.3389/fchem.2020.00095] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 01/31/2020] [Indexed: 02/05/2023] Open
Abstract
Six new pimprinine alkaloids (1–6), including four dimers, dipimprinines A–D (1–4), and two monomers, (±)-Pimprinol D (5), and pimprinone A (6), along with six known congeners (7–12), were isolated from a soil-derived actinomycete Streptomyces sp. NEAU-C99. Structures of the new compounds were elucidated by extensive spectroscopic analyses, single-crystal X-ray diffractions, and ECD calculations. Dipimprinines A–D (1–4) showed weak cytotoxic activities against five tumor cell lines, including HL-60, SMMC-7721, A-549, MCF-7, and SW-480, with IC50 values ranging from 12.7 to 30.7 μM.
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Affiliation(s)
- Zhiyin Yu
- Heilongjiang Provincial Key Laboratory of Agricultural Microbiology, Northeast Agricultural University, Harbin, China.,State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Hao Jiang
- Heilongjiang Provincial Key Laboratory of Agricultural Microbiology, Northeast Agricultural University, Harbin, China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Feng-Xian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Jian-Ping Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Chongxi Liu
- Heilongjiang Provincial Key Laboratory of Agricultural Microbiology, Northeast Agricultural University, Harbin, China.,State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Xiaowei Guo
- Heilongjiang Provincial Key Laboratory of Agricultural Microbiology, Northeast Agricultural University, Harbin, China.,State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Wensheng Xiang
- Heilongjiang Provincial Key Laboratory of Agricultural Microbiology, Northeast Agricultural University, Harbin, China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
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14
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Yang FX, Huang JP, Liu Z, Wang Z, Yang J, Tang J, Yu Z, Yan Y, Kai G, Huang SX. Benwamycins A-G, Trialkyl-Substituted Benzene Derivatives from a Soil-Derived Streptomyces. J Nat Prod 2020; 83:111-117. [PMID: 31904958 DOI: 10.1021/acs.jnatprod.9b00903] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Seven new trialkyl-substituted benzene derivatives named benwamycins A-G (1-7), together with three known congeners, 8-10, were isolated from culture broth of the soil-derived Streptomyces sp. KIB-H1471. Their structures were elucidated by using 1D and 2D NMR analyses in combination with HRESIMS data. The absolute configurations of 1-9 were determined by chemical conversion and comparison of circular dichroism spectra and confirmed for 1 by single-crystal X-ray crystallography. Compounds 6 and 7 have a unique γ-pyrone-like ring on one side chain. Compounds 2 and 6 inhibited human T cell proliferation with IC50 values of 14.3 and 12.5 μM, respectively, without obvious cytotoxicity for naïve human T cells. Compounds 3 and 6 could weakly enhance insulin-stimulated glucose uptake.
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Affiliation(s)
- Feng-Xian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
- University of the Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Jian-Ping Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Zhixiang Liu
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy , Zhejiang Chinese Medical University , Hangzhou , Zhejiang 311402 , People's Republic of China
| | - Zhiyan Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
- University of the Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Jun Tang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
- University of the Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Zhiyin Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Guoyin Kai
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy , Zhejiang Chinese Medical University , Hangzhou , Zhejiang 311402 , People's Republic of China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
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15
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Li XF, Ai B, Ye JW, He DM, Tan LM, Chen MX, Yang HM, Zeng FS, Yang FX, Liu HS, Xu Y. [Clinical analysis of seven cases of H1N1 influenza-associated encephalopathy in children]. Zhonghua Er Ke Za Zhi 2019; 57:538-542. [PMID: 31269554 DOI: 10.3760/cma.j.issn.0578-1310.2019.07.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical manifestations, diagnosis, and treatment of H1N1 influenza A-associated encephalopathy (IAE) in children. Methods: The clinical manifestations, laboratory tests, cranial magnetic resonance imaging (MRI), electroencephalography (EEG) examinations and treatments of seven children with H1N1 IAE hospitalized in Guangzhou Women and Children's Medical Center from December 2018 to January 2019 were retrospectively analyzed. Results: Five of the seven children with H1N1 IAE were female. The age at admission was 4 years and 5 months (range 7 months-9 years). Neurological symptoms occurred simultaneously or early (0-3 days) after the flu-like symptom appeared. The main clinical manifestations of neurological symptoms were seizures (repeated seizures in five cases and status convulsion in two cases, including one case of unexpected fever and repeated seizures in a nine-year old girl) accompanied with altered consciousness (drowsiness in five cases and coma in two cases). Cranial MRI in three cases displayed multifocal lesions, mainly in the bilateral thalamus, brainstem and cerebellar hemisphere. MRI also showed reversible splenial lesion in the corpus callusumin in three cases. EEG tracings were characterized by diffuse slow wave activity in four cases, and status epilepticus was monitored in one case. All the 7 cases were treated with oral oseltamivir. Three cases were treated with pulsed methylprednisolone and intravenous immunoglobulin. One case was treated with intravenous immunoglobulin alone and all the patients received oral oseltamivir. All the patients survived, with three patients had minor neurological sequelae at discharge. Conclusions: The main clinical manifestations of H1N1 IAE are seizures and altered consciousness. Cranial MRI combined with EEG is helpful for early diagnosis. Intravenous immunoglobulin and (or) methylprednisolone should be considered for severe cases.
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Affiliation(s)
- X F Li
- Department of Infectious Diseases, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
| | - B Ai
- Department of Radiology, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
| | - J W Ye
- Department of Infectious Diseases, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
| | - D M He
- Department of Infectious Diseases, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
| | - L M Tan
- Department of Infectious Diseases, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
| | - M X Chen
- Department of Infectious Diseases, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
| | - H M Yang
- Department of Infectious Diseases, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
| | - F S Zeng
- Department of Infectious Diseases, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
| | - F X Yang
- Department of Infectious Diseases, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
| | - H S Liu
- Department of Radiology, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
| | - Y Xu
- Department of Infectious Diseases, Guangzhou Women and Children's Medical Center, Guangzhou 540120, China
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16
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Yang FX, Hou GX, Luo J, Yang J, Yan Y, Huang SX. New phenoxazinone-related alkaloids from strain Streptomyces sp. KIB-H1318. J Antibiot (Tokyo) 2018; 71:1040-1043. [PMID: 30218038 DOI: 10.1038/s41429-018-0099-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/23/2018] [Accepted: 08/28/2018] [Indexed: 02/07/2023]
Abstract
Chemical investigation of a strain Streptomyces sp. KIB-H1318 isolated from soil sample led to the discovery of three new phenoxazinone-related alkaloids 1-3, as well as two known analogs exfoliazone (4) and viridobrunnine A (5). Their structures were determined on the basis of extensive spectroscopic analysis. The antimicrobial activity and cytotoxicity of the isolates were assayed. Exfoliazone and viridobrunnine A exhibited minor antibacterial activity against Escherichia coli ATCC 8099, Bacillus subtilis ATCC 6633, and Staphylococcus aureus ATCC 6538. Compound 2 exhibited low cytotoxicity against two human cancer cell lines HeLa and SW480 with the IC50 values of 36.8 and 37.8 μM, respectively.
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Affiliation(s)
- Feng-Xian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China.,University of the Chinese Academy of Sciences, 100049, Beijing, China
| | - Guan-Xiong Hou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China
| | - Jianying Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, 650204, Kunming, China.
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17
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Ding JJ, Yang FX. [Progress in environmental exposure of organophosphate flame retardants]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 51:570-576. [PMID: 28592106 DOI: 10.3760/cma.j.issn.0253-9624.2017.06.022] [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: 06/07/2023]
Abstract
Organophosphate flame retardants (OPFRs), which have both great properties of flame retardation and plasticization, are currently widely used as additive flame retardants. Due to the restriction and phase-out of brominated flame retardants (BFRs), the market demand for OPFRs as excellent alternatives of BFRs has been rapid increasing. OPFRs can be slowly released into the environment during production and application. Some OPFRs might be persistent in the environment. As a result, OPFRs have been detected in various matrices in the environment and are expected to accumulate in human body through various pathways. OPFRs may cause adverse effects to human health as some of them have been identified as neurotoxicants, reproductive toxicants and potential carcinogens. The article summarized the occurrence and patterns of OPFRs in various environmental matrices such as air, dust, water, food and so on, and in human specimens, estimates the exposure status through different pathways and body burdens of OPFRs. The expected hotspots of OPFRs were also discussed in the future.
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Affiliation(s)
- J J Ding
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
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18
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Yang FX, Zhu GF, Wang Z, Liu HL, Huang D. A putative miR172-targeted CeAPETALA2-like gene is involved in floral patterning regulation of the orchid Cymbidium ensifolium. Genet Mol Res 2015; 14:12049-61. [PMID: 26505352 DOI: 10.4238/2015.october.5.18] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
APETALA2 plays critical roles in establishing meristem and organ identity during plant floral development. In this study, we obtained a CeAP2-like gene by using the mRNA differential display technique to analyze the wild type and a multitepal mutant of the orchid Cymbidium ensifolium. The full-length cDNA encoding the CeAP2-like transcription factor shows significant similarity to the cDNA of AP2 from Erycina pusilla and contains nucleotides complementary to miR172. Using a transient gene expression system of Arabidopsis protoplasts, we found that the accumulation of CeAP2-like protein and transcripts was negatively regulated by miR172, indicating this gene as a putative target of miR172. Northern blotting revealed that CeAP2-like is dominantly expressed in the sepals and petals of the wild-type flower, and shows low expression in the gynostemium. In contrast, the accumulation of CeAP2-like transcripts decreased significantly, especially in the central part of the mutant flower, corresponding to its abnormal petals and the absence of the gynostemium. Furthermore, we found an antagonistic expression pattern between CeAP2-like and AGAMOUS in the wild type, representing A- and C-class genes that specify floral organ fate. However, this antagonistic distribution was modified in the multitepal mutant, and both genes showed lower expression than that in the wild type. This result suggested that the balance between CeAP2-like and AGAMOUS activity was important for the regulation of floral patterning in C. ensifolium. This study represents the first report on a class A gene and its regulatory role for floral development in the orchid C. ensifolium.
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Affiliation(s)
- F X Yang
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - G F Zhu
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Z Wang
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - H L Liu
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - D Huang
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
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19
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Abstract
Ascorbate peroxidase (APX) plays a central role in the ascorbate-glutathione cycle and is a key enzyme in cellular H2O2 me-tabolism. It includes a family of isoenzymes with different character-istics, which are identified in many higher plants. In the present study, we isolated the APX gene from Jatropha curcas L, which is similar with other previously characterized APXs as revealed by alignment and phylogenetic analysis of its deduced amino acid sequence. Real-time qPCR analysis showed that the expression level of JcAPX transcript significantly increased under NaCl stress. Subsequently, to elucidate the contribution of JcAPX to the protection against salt-induced oxi-dative stress, the expression construct p35S: JcAPX was created and transformed into Arabidopsis and transcribed. Under 150-mM NaCl stress, compared with wild type (WT), the overexpression of JcAPX in Arabidopsis increased the germination rate, the number of leaves, and the rosette area. In addition, the transgenic plants had longer roots, higher total chlorophyll content, higher total APX activity, and lower H2O2 content than the WT under NaCl stress conditions. These results suggested that higher APX activity in transgenic lines increases the salt tolerance by enhancing scavenging capacity for reactive oxygen spe-cies under NaCl stress conditions.
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Affiliation(s)
- Y Chen
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, China
| | - J Cai
- West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China
| | - F X Yang
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, China
| | - B Zhou
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, China
| | - L R Zhou
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, China
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20
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Jiang BG, Kong FL, Zhang QY, Yang FX, Jiang RQ. [Genetic improvement of cotton varieties in Huang-Huai region in China since 1950's. III. Improvement on agronomy properties, disease resistance and stability]. Yi Chuan Xue Bao 2001; 27:810-6. [PMID: 11132497] [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: 02/18/2023]
Abstract
Data from a set of 5-location and 2-year experiments on 10 representative historical cotton varieties and the data of Huang-Huai Regional Cotton Trials from 1973 to 1996 were analyzed to estimate the effects of genetic improvement in agronomy properties, disease resistance and stability of cotton in Huang-Huai Region in China. The results indicated that a great genetic progress of earliness and disease resistance had been achieved by breeding programs since 1950's. The maturity was shortened 3-5 days; The rate of preforst yield was increased about 7 percentages. The problem of resistance to Fususium wilt has been solved and the resistance to Verticillum wilt was improving. Some progress in stability of cotton varieties also has been achieved by breeding programs since 1950.
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Affiliation(s)
- B G Jiang
- Institute of Genetics, Chinese Academy of Sciences, Beijing 100101, China
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21
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Yuan WX, Wu XJ, Yang FX, Shang XH, Zhang LL. Effects of ginseng root saponins on brain monoamines and serum corticosterone in heat-stressed mice. Zhongguo Yao Li Xue Bao 1989; 10:492-6. [PMID: 2641845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The rectal temperature and serum corticosterone increased in mice exposed to 45 degrees C for 15 min; at the same time, the contents of brain 5-HT and NE reduced, brain DA unchanged. Ginseng root saponins (GRS) ip 200 mg/kg inhibited the increase of serum corticosterone and the decrease of brain 5-HT and NE in heat-stressed mice, but did not affect brain DA. GRS lowered mice body temperature at room temperature and inhibited the rise of body temperature under heat environmental conditions in mice. Reserpine eliminated the hypothermia of GRS at room temperature and its inhibitory effect on hyperthermia under heat-stress conditions. PCPA eliminated only the inhibition of GRS on hyperthermia under heat-stress, but had no significant effect on hypothermia at room temperature.
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