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Ou W, Tao C, Zhang Y, Gan M, Xie Y, Wu Y, Zheng X, Shu B, Duan G, Xu F. Effects of postoperative environmental noise on surgery induced pain: Evidence based on a prospective observational study. Gen Hosp Psychiatry 2024; 88:61-67. [PMID: 38508077 DOI: 10.1016/j.genhosppsych.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/13/2024] [Accepted: 03/13/2024] [Indexed: 03/22/2024]
Abstract
CONTEXT Many patients recovering from surgery in wards are disturbed by environmental noise. However, the effects of environmental noise on postoperative pain are unclear. OBJECTIVES This study aimed to assess the association between postoperative noise and pain. METHODS This prospective study included 182 women who underwent cesarean sections. Postoperative noise was continuously recorded, and pain intensity at rest was assessed using a numerical rating scale (NRS) for 0-6, 6-12, 12-18, and 18-24 h after the patients were returned to the ward. Cumulative pain scores were calculated by summing the NRS scores at each time point and comprised the primary outcome. The maximum pain NRS score and analgesic consumption during the 24 h after surgery were also recorded. RESULTS Mean environmental noise intensity during the daytime was an independent factor for cumulative pain scores, maximum pain scores, and analgesic use during the first postoperative 24 h (β, 0.37; 95% CI, 0.21-0.53 and β, 0.12; 95% CI, 0.07-0.17; P < 0.001 for both; β, 0.86; 95% CI, 0.25-1.46; P = 0.006). Cumulative and maximum NRS pain scores as well as the incidence of NRS ≥ 4 were significantly higher in patients under mean daytime environmental noise of ≥58, than <58 decibels (dB) (8.0 [6.0-11.3] vs. 6.0 (5.0-7.0); 3.0 [2.0-4.0] vs. 2.0 [2.0-2.0, and 25.6% vs. 11.0%; RR, 2.32; 95% CI, 1.19-4.54, respectively; P < 0.001 for all). CONCLUSIONS Higher-level postoperative noise exposure was associated with more severe postoperative pain and increased analgesic needs, as well as a higher incidence of moderate-to-severe pain in patients recovering from cesarean delivery. Our findings indicate that reducing environmental ward noise might benefit for postoperative pain management.
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Affiliation(s)
- Wenjun Ou
- Department of Gynaecology and Obstetrics, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Chengkun Tao
- Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Yang Zhang
- Department of Gynaecology and Obstetrics, Linshui Branch of The Second Affiliated Hospital of Chongqing Medical University, Sichuan, China
| | - Min Gan
- Department of Gynaecology and Obstetrics, Linshui Branch of The Second Affiliated Hospital of Chongqing Medical University, Sichuan, China
| | - Yan Xie
- Department of Gynaecology and Obstetrics, Linshui Branch of The Second Affiliated Hospital of Chongqing Medical University, Sichuan, China
| | - Yingcai Wu
- Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Xuemei Zheng
- Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Bin Shu
- Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Guangyou Duan
- Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.
| | - Fang Xu
- Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.
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Ding Z, Fu L, Wang B, Ye J, Ou W, Yan Y, Li M, Zeng L, Dong X, Tie W, Ye X, Yang J, Xie Z, Wang Y, Guo J, Chen S, Xiao X, Wan Z, An F, Zhang J, Peng M, Luo J, Li K, Hu W. Metabolic GWAS-based dissection of genetic basis underlying nutrient quality variation and domestication of cassava storage root. Genome Biol 2023; 24:289. [PMID: 38098107 PMCID: PMC10722858 DOI: 10.1186/s13059-023-03137-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 06/14/2022] [Accepted: 12/04/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND Metabolites play critical roles in regulating nutritional qualities of plants, thereby influencing their consumption and human health. However, the genetic basis underlying the metabolite-based nutrient quality and domestication of root and tuber crops remain largely unknown. RESULTS We report a comprehensive study combining metabolic and phenotypic genome-wide association studies to dissect the genetic basis of metabolites in the storage root (SR) of cassava. We quantify 2,980 metabolic features in 299 cultivated cassava accessions. We detect 18,218 significant marker-metabolite associations via metabolic genome-wide association mapping and identify 12 candidate genes responsible for the levels of metabolites that are of potential nutritional importance. Me3GT, MeMYB4, and UGT85K4/UGT85K5, which are involved in flavone, anthocyanin, and cyanogenic glucoside metabolism, respectively, are functionally validated through in vitro enzyme assays and in vivo gene silencing analyses. We identify a cluster of cyanogenic glucoside biosynthesis genes, among which CYP79D1, CYP71E7b, and UGT85K5 are highly co-expressed and their allelic combination contributes to low linamarin content. We find MeMYB4 is responsible for variations in cyanidin 3-O-glucoside and delphinidin 3-O-rutinoside contents, thus controlling SR endothelium color. We find human selection affects quercetin 3-O-glucoside content and SR weight per plant. The candidate gene MeFLS1 is subject to selection during cassava domestication, leading to decreased quercetin 3-O-glucoside content and thus increased SR weight per plant. CONCLUSIONS These findings reveal the genetic basis of cassava SR metabolome variation, establish a linkage between metabolites and agronomic traits, and offer useful resources for genetically improving the nutrition of cassava and other root crops.
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Affiliation(s)
- Zehong Ding
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Lili Fu
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Bin Wang
- Wuhan Metware Biotechnology Co., Ltd, Wuhan, China
| | - Jianqiu Ye
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Wenjun Ou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Yan Yan
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Meiying Li
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Liwang Zeng
- Hainan Yazhou Bay Seed Laboratory, Sanya, China
- Institute of Scientific and Technical Information, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Xuekui Dong
- Wuhan Healthcare Metabolic Biotechnology Co., Ltd, Wuhan, China
| | - Weiwei Tie
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, China
| | - Xiaoxue Ye
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, China
| | - Jinghao Yang
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Zhengnan Xie
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Yu Wang
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, China
| | - Jianchun Guo
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Songbi Chen
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Xinhui Xiao
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Zhongqing Wan
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Feifei An
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Jiaming Zhang
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Ming Peng
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, China
| | - Jie Luo
- Hainan Yazhou Bay Seed Laboratory, Sanya, China.
- Sanya Nanfan Research Institute of Hainan University, Sanya, 572025, China.
| | - Kaimian Li
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China.
| | - Wei Hu
- National Key Laboratory for Tropical Crop Breeding, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China.
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Li M, Zi X, Lv R, Zhang L, Ou W, Chen S, Hou G, Zhou H. Cassava Foliage Effects on Antioxidant Capacity, Growth, Immunity, and Ruminal Microbial Metabolism in Hainan Black Goats. Microorganisms 2023; 11:2320. [PMID: 37764163 PMCID: PMC10535588 DOI: 10.3390/microorganisms11092320] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/27/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
Cassava (Manihot esculenta Crantz) foliage is a byproduct of cassava production characterized by high biomass and nutrient content. In this study, we investigated the effects of cassava foliage on antioxidant capacity, growth performance, and immunity status in goats, as well as rumen fermentation and microbial metabolism. Twenty-five Hainan black goats were randomly divided into five groups (n = 5 per group) and accepted five treatments: 0% (T1), 25% (T2), 50% (T3), 75% (T4), and 100% (T5) of the cassava foliage silage replaced king grass, respectively. The feeding experiment lasted for 70 d (including 10 d adaptation period and 60 d treatment period). Feeding a diet containing 50% cassava foliage resulted in beneficial effects for goat growth and health, as reflected by the higher average daily feed intake (ADFI), average daily gain (ADG) and better feed conversion rate (FCR), as well as by the reduced serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine (CRE), and triglycerides (TG). Meanwhile, cassava foliage improved antioxidant activity by increasing the level of glutathion peroxidase (GSH-Px), superoxide dismutase (SOD), and total antioxidant capacity (T-AOC) and lowering malondialdehyde (MDA). Moreover, feeding cassava foliage was also beneficial to immunity status by enhancing complement 3 (C3), complement 4 (C4), immunoglobulin A (IgA), immunoglobulin G (IgG), and immunoglobulin M (IgM). Furthermore, the addition of dietary cassava foliage also altered rumen fermentation, rumen bacterial community composition, and metabolism. The abundance of Butyrivibrio_2 and Prevotella_1 was elevated, as were the concentrations of beneficial metabolites such as butyric acid; there was a concomitant decline in metabolites that hindered nutrient metabolism and harmed host health. In summary, goats fed a diet containing 50% cassava foliage silage demonstrated a greater abundance of Butyrivibrio_2, which enhanced the production of butyric acid; these changes led to greater antioxidant capacity, growth performance, and immunity in the goats.
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Affiliation(s)
- Mao Li
- Key Laboratory of Ministry of Agriculture and Rural Affairs for Germplasm Resources Conservation and Utilization of Cassava, Key Laboratory of Ministry of Agriculture and Rural Affairs for Crop Gene Resources and Germplasm Enhancement in Southern China, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China
- Zhanjiang Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524000, China
| | - Xuejuan Zi
- Key Laboratory of Ministry of Education for Genetics and Germplasm Innovation of Tropical Special Trees and Ornamental Plants, Key Laboratory of Germplasm Resources of Tropical Special Ornamental Plants of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China
| | - Renlong Lv
- Key Laboratory of Ministry of Agriculture and Rural Affairs for Germplasm Resources Conservation and Utilization of Cassava, Key Laboratory of Ministry of Agriculture and Rural Affairs for Crop Gene Resources and Germplasm Enhancement in Southern China, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China
- Zhanjiang Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524000, China
| | - Lidong Zhang
- Key Laboratory of Ministry of Education for Genetics and Germplasm Innovation of Tropical Special Trees and Ornamental Plants, Key Laboratory of Germplasm Resources of Tropical Special Ornamental Plants of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, China
| | - Wenjun Ou
- Key Laboratory of Ministry of Agriculture and Rural Affairs for Germplasm Resources Conservation and Utilization of Cassava, Key Laboratory of Ministry of Agriculture and Rural Affairs for Crop Gene Resources and Germplasm Enhancement in Southern China, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China
| | - Songbi Chen
- Key Laboratory of Ministry of Agriculture and Rural Affairs for Germplasm Resources Conservation and Utilization of Cassava, Key Laboratory of Ministry of Agriculture and Rural Affairs for Crop Gene Resources and Germplasm Enhancement in Southern China, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China
| | - Guanyu Hou
- Key Laboratory of Ministry of Agriculture and Rural Affairs for Germplasm Resources Conservation and Utilization of Cassava, Key Laboratory of Ministry of Agriculture and Rural Affairs for Crop Gene Resources and Germplasm Enhancement in Southern China, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China
- Zhanjiang Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524000, China
| | - Hanlin Zhou
- Key Laboratory of Ministry of Agriculture and Rural Affairs for Germplasm Resources Conservation and Utilization of Cassava, Key Laboratory of Ministry of Agriculture and Rural Affairs for Crop Gene Resources and Germplasm Enhancement in Southern China, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China
- Zhanjiang Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524000, China
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Luo X, An F, Xue J, Zhu W, Wei Z, Ou W, Li K, Chen S, Cai J. Integrative analysis of metabolome and transcriptome reveals the mechanism of color formation in cassava ( Manihot esculenta Crantz) leaves. Front Plant Sci 2023; 14:1181257. [PMID: 37360704 PMCID: PMC10289162 DOI: 10.3389/fpls.2023.1181257] [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] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/18/2023] [Indexed: 06/28/2023]
Abstract
Cassava (Manihot esculenta Crantz) leaves are often used as vegetables in Africa. Anthocyanins possess antioxidant, anti-inflammatory, anti-cancer, and other biological activities. They are poor in green leaves but rich in the purple leaves of cassava. The mechanism of anthocyanin's accumulation in cassava is poorly understood. In this study, two cassava varieties, SC9 with green leaves and Ziyehuangxin with purple leaves (PL), were selected to perform an integrative analysis using metabolomics and transcriptomics. The metabolomic analysis indicated that the most significantly differential metabolites (SDMs) belong to anthocyanins and are highly accumulated in PL. The transcriptomic analysis revealed that differentially expressed genes (DEGs) are enriched in secondary metabolites biosynthesis. The analysis of the combination of metabolomics and transcriptomics showed that metabolite changes are associated with the gene expressions in the anthocyanin biosynthesis pathway. In addition, some transcription factors (TFs) may be involved in anthocyanin biosynthesis. To further investigate the correlation between anthocyanin accumulation and color formation in cassava leaves, the virus-induced gene silencing (VIGS) system was used. VIGS-MeANR silenced plant showed the altered phenotypes of cassava leaves, partially from green to purple color, resulting in a significant increase of the total anthocyanin content and reduction in the expression of MeANR. These results provide a theoretical basis for breeding cassava varieties with anthocyanin-rich leaves.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Jie Cai
- *Correspondence: Songbi Chen, ; Jie Cai,
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Cai J, Xue J, Zhu W, Luo X, Lu X, Xue M, Wei Z, Cai Y, Ou W, Li K, An F, Chen S. Integrated Metabolomic and Transcriptomic Analyses Reveals Sugar Transport and Starch Accumulation in Two Specific Germplasms of Manihot esculenta Crantz. Int J Mol Sci 2023; 24:ijms24087236. [PMID: 37108399 PMCID: PMC10138763 DOI: 10.3390/ijms24087236] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/01/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
As a starchy and edible tropical plant, cassava (Manihot esculenta Crantz) has been widely used as an industrial raw material and a dietary source. However, the metabolomic and genetic differences in specific germplasms of cassava storage root were unclear. In this study, two specific germplasms, M. esculenta Crantz cv. sugar cassava GPMS0991L and M. esculenta Crantz cv. pink cassava BRA117315, were used as research materials. Results showed that sugar cassava GPMS0991L was rich in glucose and fructose, whereas pink cassava BRA117315 was rich in starch and sucrose. Metabolomic and transcriptomic analysis indicated that sucrose and starch metabolism had significantly changing metabolites enrichment and the highest degree of differential expression genes, respectively. Sugar transport in storage roots may contribute to the activities of sugar, which will eventually be exported to transporters (SWEETs), such as (MeSWEET1a, MeSWEET2b, MeSWEET4, MeSWEET5, MeSWEET10b, and MeSWEET17c), which transport hexose to plant cells. The expression level of genes involved in starch biosynthesis and metabolism were altered, which may result in starch accumulation. These results provide a theoretical basis for sugar transport and starch accumulation and may be useful in improving the quality of tuberous crops and increasing yield.
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Affiliation(s)
- Jie Cai
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou 571101, China
| | - Jingjing Xue
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou 571101, China
| | - Wenli Zhu
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou 571101, China
| | - Xiuqin Luo
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou 571101, China
| | - Xiaohua Lu
- School of Life Science, Hainan University, Haikou 570228, China
| | - Maofu Xue
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou 571101, China
| | - Zhuowen Wei
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou 571101, China
| | - Yuqi Cai
- School of Life Science, Hainan University, Haikou 570228, China
| | - Wenjun Ou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou 571101, China
| | - Kaimian Li
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou 571101, China
| | - Feifei An
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou 571101, China
| | - Songbi Chen
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou 571101, China
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Xia K, Wang F, Lai X, Luo P, Chen H, Ma Y, Huang W, Ou W, Li Y, Feng X, Lei Z, Tu X, Ke Q, Mao F, Deng C, Xiang A. Gene Editing/Gene Therapies: AAV-MEDIATED GENE THERAPY PRODUCES FERTILE OFFSPRING IN THE LHCGR-DEFICIENT MOUSE MODEL OF LEYDIG CELL FAILURE. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00156-6] [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: 11/26/2022]
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An F, Xiao X, Chen T, Xue J, Luo X, Ou W, Li K, Cai J, Chen S. Systematic Analysis of bHLH Transcription Factors in Cassava Uncovers Their Roles in Postharvest Physiological Deterioration and Cyanogenic Glycosides Biosynthesis. Front Plant Sci 2022; 13:901128. [PMID: 35789698 PMCID: PMC9249602 DOI: 10.3389/fpls.2022.901128] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/09/2022] [Indexed: 05/15/2023]
Abstract
The basic helix-loop-helix (bHLH) proteins are a large superfamily of transcription factors, and play a central role in a wide range of metabolic, physiological, and developmental processes in higher organisms. However, systematic investigation of bHLH gene family in cassava (Manihot esculenta Crantz) has not been reported. In the present study, we performed a genome-wide survey and identified 148 MebHLHs genes were unevenly harbored in 18 chromosomes. Through phylogenetic analyses along with Arabidopsis counterparts, these MebHLHs genes were divided into 19 groups, and each gene contains a similar structure and conserved motifs. Moreover, many cis-acting regulatory elements related to various defense and stress responses showed in MebHLH genes. Interestingly, transcriptome data analyses unveiled 117 MebHLH genes during postharvest physiological deterioration (PPD) process of cassava tuberous roots, while 65 MebHLH genes showed significantly change. Meanwhile, the relative quantitative analysis of 15 MebHLH genes demonstrated that they were sensitive to PPD, suggesting they may involve in PPD process regulation. Cyanogenic glucosides (CGs) biosynthesis during PPD process was increased, silencing of MebHLH72 and MebHLH114 showed that linamarin content was significantly decreased in the leaves. To summarize, the genome-wide identification and expression profiling of MebHLH candidates pave a new avenue for uderstanding their function in PPD and CGs biosynthesis, which will accelerate the improvement of PPD tolerance and decrease CGs content in cassava tuberous roots.
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Affiliation(s)
- Feifei An
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
- School of Life Sciences, Hainan University, Haikou, China
| | - Xinhui Xiao
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Ting Chen
- Postgraduate Department, Hainan Normal University, Haikou, China
| | - Jingjing Xue
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Xiuqin Luo
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Wenjun Ou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Kaimian Li
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Jie Cai
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
- Jie Cai,
| | - Songbi Chen
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
- *Correspondence: Songbi Chen,
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Cai J, Zhang J, Ding Y, Yu S, Lin H, Yuan Z, Li K, Ou W, Chen S. Different Fertilizers Applied Alter Fungal Community Structure in Rhizospheric Soil of Cassava ( Manihot esculenta Crantz) and Increase Crop Yield. Front Microbiol 2021; 12:663781. [PMID: 34858357 PMCID: PMC8631426 DOI: 10.3389/fmicb.2021.663781] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 02/03/2021] [Accepted: 10/08/2021] [Indexed: 11/16/2022] Open
Abstract
Soil microbes play an important role in the ecosystem and have a relationship with plant growth, development, and production. There are only a few reports on the effects of planting patterns of cassava on the microbial community structure in the rhizospheric soil. Here, we investigated the effects of different fertilization on the microbial community structure in the cassava rhizospheric soil. SC205 cultivar was used in this study as the experimental material. Compound fertilizer (CF) and reduced fertilizer (RF) were applied to the soil prior to planting. Soil samples were collected before harvest, and fungi were analyzed using IonS5TMXL sequencing platform. Results showed that CF and RF treatments significantly increased cassava yield. Amplicon sequencing result indicated that the fungi richness in rhizospheric soil of cassava was increased after CF was applied, and the diversity was decreased. However, the fungal diversity and richness were decreased in rhizospheric soil after RF was applied. The most dominant fungal phylum was Ascomycota, which increased after fertilization. In addition, the abundance of beneficial fungi such as Chaetomium increased after fertilization, while that of pathogenic fungi such as Fusarium solani was decreased. The composition of the fungal community in rhizospheric soil with CF and RF applied was similar, but the richness and diversity of fungi were different. Canonical correspondence analysis (CCA) indicates there was a positive correlation between soil nutrition and fungal community structure. Overall, our results indicate that fertilization alters the fungal community structure of cassava rhizospheric soil, such that the abundance of potentially beneficial fungi increased, while that of potentially pathogenic fungi decreased, thereby significantly promoting plant growth and yield of cassava. Thus, during actual production, attention should be paid to maintain the stability of cassava rhizospheric soil micro-ecology.
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Affiliation(s)
- Jie Cai
- Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Jie Zhang
- Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Yun Ding
- College of Horticulture, Hainan University, Haikou, China
| | - Shan Yu
- Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Hongxin Lin
- Soil and Fertilizer and Resources and Environment Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - Zhanqi Yuan
- Soil and Fertilizer and Resources and Environment Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - Kaimian Li
- Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Wenjun Ou
- Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Songbi Chen
- Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
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9
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Hu W, Ji C, Liang Z, Ye J, Ou W, Ding Z, Zhou G, Tie W, Yan Y, Yang J, Ma L, Yang X, Wei Y, Jin Z, Xie J, Peng M, Wang W, Guo A, Xu B, Guo J, Chen S, Wang M, Zhou Y, Li X, Li R, Xiao X, Wan Z, An F, Zhang J, Leng Q, Li Y, Shi H, Ming R, Li K. Resequencing of 388 cassava accessions identifies valuable loci and selection for variation in heterozygosity. Genome Biol 2021; 22:316. [PMID: 34784936 PMCID: PMC8594203 DOI: 10.1186/s13059-021-02524-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 02/22/2021] [Accepted: 10/24/2021] [Indexed: 01/30/2023] Open
Abstract
Background Heterozygous genomes are widespread in outcrossing and clonally propagated crops. However, the variation in heterozygosity underlying key agronomic traits and crop domestication remains largely unknown. Cassava is a staple crop in Africa and other tropical regions and has a highly heterozygous genome. Results We describe a genomic variation map from 388 resequenced genomes of cassava cultivars and wild accessions. We identify 52 loci for 23 agronomic traits through a genome-wide association study. Eighteen allelic variations in heterozygosity for nine candidate genes are significantly associated with seven key agronomic traits. We detect 81 selective sweeps with decreasing heterozygosity and nucleotide diversity, harboring 548 genes, which are enriched in multiple biological processes including growth, development, hormone metabolisms and responses, and immune-related processes. Artificial selection for decreased heterozygosity has contributed to the domestication of the large starchy storage root of cassava. Selection for homozygous GG allele in MeTIR1 during domestication contributes to increased starch content. Selection of homozygous AA allele in MeAHL17 is associated with increased storage root weight and cassava bacterial blight (CBB) susceptibility. We have verified the positive roles of MeTIR1 in increasing starch content and MeAHL17 in resistance to CBB by transient overexpression and silencing analysis. The allelic combinations in MeTIR1 and MeAHL17 may result in high starch content and resistance to CBB. Conclusions This study provides insights into allelic variation in heterozygosity associated with key agronomic traits and cassava domestication. It also offers valuable resources for the improvement of cassava and other highly heterozygous crops. Supplementary Information The online version contains supplementary material available at 10.1186/s13059-021-02524-7.
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Affiliation(s)
- Wei Hu
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China. .,Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China. .,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.
| | - Changmian Ji
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China.,Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Zhe Liang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jianqiu Ye
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Wenjun Ou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Zehong Ding
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China.,Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Gang Zhou
- Biomarker Technologies Corporation, Beijing, China
| | - Weiwei Tie
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China.,Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Yan Yan
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China.,Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Jinghao Yang
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Liming Ma
- Biomarker Technologies Corporation, Beijing, China
| | - Xiaoying Yang
- College of Food Science and Technology, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Yunxie Wei
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, Hainan, China
| | - Zhiqiang Jin
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Jianghui Xie
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Ming Peng
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Wenquan Wang
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Anping Guo
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China.,Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Biyu Xu
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Jianchun Guo
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.,Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Songbi Chen
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | | | - Yang Zhou
- Biomarker Technologies Corporation, Beijing, China
| | - Xiaolong Li
- Biomarker Technologies Corporation, Beijing, China
| | - Ruoxi Li
- Fu Foundation School of Engineering and Applied Science, Columbia University, New York, NY, 10027, USA
| | - Xinhui Xiao
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Zhongqing Wan
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Feifei An
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Jie Zhang
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Qingyun Leng
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Yin Li
- Waksman Institute of Microbiology, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Haitao Shi
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, Hainan, China.
| | - Ray Ming
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, China. .,Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
| | - Kaimian Li
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.
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10
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Wang S, Ou W, Li N, Wang S, Wu H, Pu Y, Xiao S, Fu Y, Wang T. P22.05 Dynamic Monitoring of Blood Samples by PEAC Technology for Early-Stage Lung Cancer Patients After Surgery. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.359] [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: 10/20/2022]
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11
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Li C, Dong G, Bian M, Liu X, Gong J, Hao J, Wang W, Li K, Ou W, Xia T. Brewing rich 2-phenylethanol beer from cassava and its producing metabolisms in yeast. J Sci Food Agric 2021; 101:4050-4058. [PMID: 33349937 DOI: 10.1002/jsfa.11040] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 09/16/2020] [Revised: 12/08/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Cassava is rich in nutrition and has high edible value, but the development of the cassava industry is limited by the traditional low added value processing and utilization mode. In this study, cassava tuber was used as beer adjunct to develop a complete set of fermentation technology for manufacturing cassava beer. RESULTS The activities of transaminase, phenylpyruvate decarboxylase and dehydrogenase in 2-phenylethanol Ehrlich biosynthesis pathway of Saccharomyces cerevisiae were higher in cassava beer than that of malt beer. Aminotransferase ARO9 gene and phenylpyruvate decarboxylase ARO10 gene were up-regulated in the late stage of fermentation, which indicated that they were the main regulated genes of 2-phenylethanol Ehrlich pathway with phenylalanine as substrate in cassava beer preparation. CONCLUSIONS Compared with traditional wheat beer, cassava beer was similar in the content of nutrition elements, diacetyl, total acid, alcohol and carbon dioxide, but has the characteristics of fresh fragrance and better taste. The hydrocyanic acid contained in cassava root tubes was catabolized during fermentation and compliant with the safety standard of beverage. Further study found that the content of 2-phenylethanol in cassava beer increased significantly, which gave cassava beer a unique elegant and delicate rose flavor. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Can Li
- School of Bioengineering, Qilu University of Technology, Jinan, China
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Jinan, China
| | - Geyu Dong
- School of Bioengineering, Qilu University of Technology, Jinan, China
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Jinan, China
| | - Meng Bian
- School of Bioengineering, Qilu University of Technology, Jinan, China
| | - Xinli Liu
- School of Bioengineering, Qilu University of Technology, Jinan, China
| | - Jing Gong
- TsingTao Brewery (Jinan) Co. LTD, Jinan, China
| | - Jingxin Hao
- TsingTao Brewery (Jinan) Co. LTD, Jinan, China
| | - Wenquan Wang
- College of Tropical Crops, Hainan University, Haiko, China
| | - Kaimian Li
- Tropical Crops Genetics Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haiko, China
| | - Wenjun Ou
- Tropical Crops Genetics Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haiko, China
| | - Tao Xia
- School of Bioengineering, Qilu University of Technology, Jinan, China
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Jinan, China
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12
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Hu W, Ji C, Shi H, Liang Z, Ding Z, Ye J, Ou W, Zhou G, Tie W, Yan Y, Yang J, Yang X, Wei Y, Jin Z, Xie J, Peng M, Wang W, Guo A, Xu B, Guo J, Chen S, Ma L, Wang M, Li X, Li R, Guo S, Xiao X, Wan Z, An F, Zhang J, Leng Q, Li Y, Ming R, Li K. Allele-defined genome reveals biallelic differentiation during cassava evolution. Mol Plant 2021; 14:851-854. [PMID: 33866024 DOI: 10.1016/j.molp.2021.04.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/12/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Affiliation(s)
- Wei Hu
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China; Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.
| | - Changmian Ji
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China; Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Biomarker Technologies Corporation, Beijing, China
| | - Haitao Shi
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, Hainan, China
| | - Zhe Liang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zehong Ding
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China; Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Jianqiu Ye
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Wenjun Ou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Gang Zhou
- Biomarker Technologies Corporation, Beijing, China
| | - Weiwei Tie
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China; Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Yan Yan
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Jinghao Yang
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Xiaoying Yang
- College of Food Science and Technology, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Yunxie Wei
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, Hainan, China
| | - Zhiqiang Jin
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Jianghui Xie
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Ming Peng
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Wenquan Wang
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Anping Guo
- Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China; Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Biyu Xu
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Jianchun Guo
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Songbi Chen
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Liming Ma
- Biomarker Technologies Corporation, Beijing, China
| | | | - Xiaolong Li
- Biomarker Technologies Corporation, Beijing, China
| | - Ruoxi Li
- Fu Foundation School of Engineering and Applied Science, Columbia University, New York, USA
| | - Siyi Guo
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Xinhui Xiao
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Zhongqing Wan
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Feifei An
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Jie Zhang
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Qingyun Leng
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China
| | - Yin Li
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, the Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science & Technology, Wuhan, China
| | - Ray Ming
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, China; Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
| | - Kaimian Li
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China; Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, China.
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13
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Malik AI, Kongsil P, Nguyễn VA, Ou W, Sholihin, Srean P, Sheela MN, Becerra López-Lavalle LA, Utsumi Y, Lu C, Kittipadakul P, Nguyễn HH, Ceballos H, Nguyễn TH, Selvaraj Gomez M, Aiemnaka P, Labarta R, Chen S, Amawan S, Sok S, Youabee L, Seki M, Tokunaga H, Wang W, Li K, Nguyễn HA, Nguyễn VĐ, Hàm LH, Ishitani M. Cassava breeding and agronomy in Asia: 50 years of history and future directions. Breed Sci 2020; 70:145-166. [PMID: 32523397 PMCID: PMC7272245 DOI: 10.1270/jsbbs.18180] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 09/29/2019] [Indexed: 09/29/2023]
Abstract
In Asia, cassava (Manihot esculenta) is cultivated by more than 8 million farmers, driving the rural economy of many countries. The International Center for Tropical Agriculture (CIAT), in partnership with national agricultural research institutes (NARIs), instigated breeding and agronomic research in Asia, 1983. The breeding program has successfully released high-yielding cultivars resulting in an average yield increase from 13.0 t ha-1 in 1996 to 21.3 t ha-1 in 2016, with significant economic benefits. Following the success in increasing yields, cassava breeding has turned its focus to higher-value traits, such as waxy cassava, to reach new market niches. More recently, building resistance to invasive pests and diseases has become a top priority due to the emergent threat of cassava mosaic disease (CMD). The agronomic research involves driving profitability with advanced technologies focusing on better agronomic management practices thereby maintaining sustainable production systems. Remote sensing technologies are being tested for trait discovery and large-scale field evaluation of cassava. In summary, cassava breeding in Asia is driven by a combination of food and market demand with technological innovations to increase the productivity. Further, exploration in the potential of data-driven agriculture is needed to empower researchers and producers for sustainable advancement.
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Affiliation(s)
- Al Imran Malik
- International Center for Tropical Agriculture (CIAT-Laos), Lao PDR Office, Dong Dok, Ban Nongviengkham, Vientiane, Lao PDR
| | - Pasajee Kongsil
- Department of Agronomy, Faculty of Agriculture, Kasetsart University, 50 Ngam Wong Wan Rd, Chatuchak Bangkok 10900, Thailand
| | - Vũ Anh Nguyễn
- International Laboratory for Cassava Molecular Breeding, National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute, Pham Van Dong Rd, Bac Tu Liem District, Hanoi, Vietnam
| | - Wenjun Ou
- Chinese Academy of Tropical Agricultural Sciences (CATAS), 571737, Hainan Province, the People’s Republic of China
| | - Sholihin
- Indonesian Legume and Tuber Crops Research Institute, Kendalpayak Km 8, PO BOX 66, Malang 65101, Indonesia
| | - Pao Srean
- Faculty of Agriculture & Food Processing, University of Battambang, Battambang, Cambodia
| | - MN Sheela
- Central Tuber Crops Research Institute Sreekariyam, Thiruvananthapuram-605 017, Kerala, India
| | | | - Yoshinori Utsumi
- International Laboratory for Cassava Molecular Breeding, National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute, Pham Van Dong Rd, Bac Tu Liem District, Hanoi, Vietnam
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Cheng Lu
- Chinese Academy of Tropical Agricultural Sciences (CATAS), 571737, Hainan Province, the People’s Republic of China
| | - Piya Kittipadakul
- Department of Agronomy, Faculty of Agriculture, Kasetsart University, 50 Ngam Wong Wan Rd, Chatuchak Bangkok 10900, Thailand
| | - Hữu Hỷ Nguyễn
- Hung Loc Agricultural Research Center, Institute for Agriculture in Southern Vietnam, 121 Nguyen Binh Khiem, District 1, HCM City, Vietnam
| | - Hernan Ceballos
- International Center for Tropical Agriculture (CIAT), Km 17, Recta Cali-Palmira Apartado Aéreo 6713, Cali, Colombia
| | - Trọng Hiển Nguyễn
- Root and Tuber Crop Research and Development Center, Food and Field Crop Research Institute, Vinh Quynh, Thanh Tri, Hanoi, Vietnam
| | - Michael Selvaraj Gomez
- International Center for Tropical Agriculture (CIAT), Km 17, Recta Cali-Palmira Apartado Aéreo 6713, Cali, Colombia
| | - Pornsak Aiemnaka
- Department of Agronomy, Faculty of Agriculture, Kasetsart University, 50 Ngam Wong Wan Rd, Chatuchak Bangkok 10900, Thailand
| | - Ricardo Labarta
- International Center for Tropical Agriculture (CIAT), Km 17, Recta Cali-Palmira Apartado Aéreo 6713, Cali, Colombia
| | - Songbi Chen
- Chinese Academy of Tropical Agricultural Sciences (CATAS), 571737, Hainan Province, the People’s Republic of China
| | - Suwaluk Amawan
- Rayong Field Crops Research Center, Sukumvit Rd, Huaypong, Meang, Rayong 21150, Thailand
| | - Sophearith Sok
- International Center for Tropical Agriculture (CIAT-Asia), Phnom Penh, Cambodia
| | - Laothao Youabee
- International Center for Tropical Agriculture (CIAT-Laos), Lao PDR Office, Dong Dok, Ban Nongviengkham, Vientiane, Lao PDR
| | - Motoaki Seki
- International Laboratory for Cassava Molecular Breeding, National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute, Pham Van Dong Rd, Bac Tu Liem District, Hanoi, Vietnam
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Hiroki Tokunaga
- International Laboratory for Cassava Molecular Breeding, National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute, Pham Van Dong Rd, Bac Tu Liem District, Hanoi, Vietnam
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Wenquan Wang
- Chinese Academy of Tropical Agricultural Sciences (CATAS), 571737, Hainan Province, the People’s Republic of China
| | - Kaimian Li
- Chinese Academy of Tropical Agricultural Sciences (CATAS), 571737, Hainan Province, the People’s Republic of China
| | - Hai Anh Nguyễn
- International Laboratory for Cassava Molecular Breeding, National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute, Pham Van Dong Rd, Bac Tu Liem District, Hanoi, Vietnam
| | - Văn Đồng Nguyễn
- International Laboratory for Cassava Molecular Breeding, National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute, Pham Van Dong Rd, Bac Tu Liem District, Hanoi, Vietnam
| | - Lê Huy Hàm
- International Laboratory for Cassava Molecular Breeding, National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute, Pham Van Dong Rd, Bac Tu Liem District, Hanoi, Vietnam
| | - Manabu Ishitani
- International Laboratory for Cassava Molecular Breeding, National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute, Pham Van Dong Rd, Bac Tu Liem District, Hanoi, Vietnam
- International Center for Tropical Agriculture (CIAT), Km 17, Recta Cali-Palmira Apartado Aéreo 6713, Cali, Colombia
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Liu F, Ou W, Diede S, Whitman E. Real-world experience of pembrolizumab in patients with advanced melanoma: A large retrospective observational study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy288.091] [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: 11/13/2022] Open
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15
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Ou W, Mao X, Huang C, Tie W, Yan Y, Ding Z, Wu C, Xia Z, Wang W, Zhou S, Li K, Hu W. Genome-Wide Identification and Expression Analysis of the KUP Family under Abiotic Stress in Cassava ( Manihot esculenta Crantz). Front Physiol 2018; 9:17. [PMID: 29416511 PMCID: PMC5787556 DOI: 10.3389/fphys.2018.00017] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [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: 06/16/2017] [Accepted: 01/08/2018] [Indexed: 12/30/2022] Open
Abstract
KT/HAK/KUP (KUP) family is responsible for potassium ion (K+) transport, which plays a vital role in the response of plants to abiotic stress by maintaining osmotic balance. However, our understanding of the functions of the KUP family in the drought-resistant crop cassava (Manihot esculenta Crantz) is limited. In the present study, 21 cassava KUP genes (MeKUPs) were identified and classified into four clusters based on phylogenetic relationships, conserved motifs, and gene structure analyses. Transcriptome analysis revealed the expression diversity of cassava KUPs in various tissues of three genotypes. Comparative transcriptome analysis showed that the activation of MeKUP genes by drought was more in roots than that in leaves of Arg7 and W14 genotypes, whereas less in roots than that in leaves of SC124 variety. These findings indicate that different cassava genotypes utilize various drought resistance mechanism mediated by KUP genes. Specific KUP genes showed broad upregulation after exposure to salt, osmotic, cold, H2O2, and abscisic acid (ABA) treatments. Taken together, this study provides insights into the KUP-mediated drought response of cassava at transcription levels and identifies candidate genes that may be utilized in improving crop tolerance to abiotic stress.
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Affiliation(s)
- Wenjun Ou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, China
| | - Xiang Mao
- Wuhan Centre for Disease Prevention and Control, Wuhan, China
| | - Chao Huang
- College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Weiwei Tie
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Yan Yan
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Zehong Ding
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Chunlai Wu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Zhiqiang Xia
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Wenquan Wang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Shiyi Zhou
- Hubei Key Laboratory of Purification and Application of Plant Anticancer Active Ingredients, Chemistry and Biology Science College, Hubei University of Education, Wuhan, China
| | - Kaimian Li
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, China.,Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Wei Hu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
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Liu W, Liu Y, Yang Y, Ou W, Chen X, Huang B, Wang H, Liu M. Metabolic Biomarkers of Aging and Aging-related Diseases in Chinese Middle-Aged and Elderly Men. J Nutr Health Aging 2018; 22:1189-1197. [PMID: 30498825 DOI: 10.1007/s12603-018-1062-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND Aging is an acknowledged risk factor for most chronic diseases and functional impairments. The practicability of potential biomarkers of aging remains unsure. Moreover, biomarkers related to certain geriatric diseases, such as carotid atherosclerosis and multiple co-morbidities are less understood. The purpose of this study was to investigate the definite relationship between metabolic biomarkers and aging-related diseases. METHODS Eighty-five male adults aged fifty years or older from the general population were enrolled. Plasma metabolic biomarkers, including fourteen amino acids and thirty-six acylcarnitines, were measured by liquid chromatography mass spectrometry. Bivariate correlation analysis was employed to estimate the correlations between variables and age, and also to evaluate the relationship between metabolic biomarkers and aging-related diseases. Receiver operating characteristic (ROC) curve was conducted to judge the diagnostic efficiency of potential metabolic biomarkers for co-morbidities. RESULTS Certain metabolic biomarkers were strongly positively correlated with age, such as tetradecenoylcarnitine (C14:1), microalbumin-urine creatinine ratio (UACR), dodecenoylcarnitine (C12:1) and citrulline (p < 0.001). Carotid atherosclerosis and co-morbidities were positively correlated with aging (p < 0.001). After adjustment for age, hydroxytetradecanoylcarnitine (C14OH) remained positively correlated with carotid plague area. Besides, citrulline had diagnostic power for co-morbidities. CONCLUSIONS Citrulline may be a promising metabolic biomarker in the middle-aged and elderly men. Larger-scale and long-term studies are needed to confirm our findings.
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Affiliation(s)
- W Liu
- Prof. Meilin Liu, Department of Geriatrics, Peking University First Hospital; No. 8 Xishiku Street, Xicheng District, Beijing 100034, China, E-mail address:
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An F, Li G, Li QX, Li K, Carvalho LJCB, Ou W, Chen S. The Comparatively Proteomic Analysis in Response to Cold Stress in Cassava Plantlets. Plant Mol Biol Report 2016; 34:1095-1110. [PMID: 27881899 PMCID: PMC5099363 DOI: 10.1007/s11105-016-0987-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Cassava (Manihot esculenta Crantz) is a tropical root crop and sensitive to low temperature. However, it is poorly to know how cassava can modify its metabolism and growth to adapt to cold stress. An investigation aimed at a better understanding of cold-tolerant mechanism of cassava plantlets was carried out with the approaches of physiology and proteomics in the present study. The principal component analysis of seven physiological characteristics showed that electrolyte leakage (EL), chlorophyll content, and malondialdehyde (MDA) may be the most important physiological indexes for determining cold-resistant abilities of cassava. The genome-wide proteomic analysis showed that 20 differential proteins had the same patterns in the apical expanded leaves of cassava SC8 and Col1046. They were mainly related to photosynthesis, carbon metabolism and energy metabolism, defense, protein synthesis, amino acid metabolism, signal transduction, structure, detoxifying and antioxidant, chaperones, and DNA-binding proteins, in which 40 % were related with photosynthesis. The remarkable variation in photosynthetic activity and expression level of peroxiredoxin is closely linked with expression levels of proteomic profiles. Moreover, analysis of differentially expressed proteins under cold stress is an important step toward further elucidation of mechanisms of cold stress resistance.
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Affiliation(s)
- Feifei An
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Danzhou, 571737 China
| | - Genghu Li
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Danzhou, 571737 China
| | - Qing X. Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Manoa, HI USA
| | - Kaimian Li
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Danzhou, 571737 China
| | | | - Wenjun Ou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Danzhou, 571737 China
| | - Songbi Chen
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Danzhou, 571737 China
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18
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Li N, Zeng ZF, Wang SY, Ou W, Ye X, Li J, He XH, Zhang BB, Yang H, Sun HB, Fang Q, Wang BX. Randomized phase III trial of prophylactic cranial irradiation versus observation in patients with fully resected stage IIIA–N2 nonsmall-cell lung cancer and high risk of cerebral metastases after adjuvant chemotherapy. Ann Oncol 2015; 26:504-9. [DOI: 10.1093/annonc/mdu567] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [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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19
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Marino MP, Panigaj M, Ou W, Manirarora J, Wei CH, Reiser J. A scalable method to concentrate lentiviral vectors pseudotyped with measles virus glycoproteins. Gene Ther 2015; 22:280-5. [DOI: 10.1038/gt.2014.125] [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] [Received: 05/15/2014] [Revised: 11/07/2014] [Accepted: 12/02/2014] [Indexed: 01/19/2023]
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20
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Cao X, Ou W, Tian S, Wang C, Zhu Z, Wang J, Gou F, Yang D, Chen S. A new facility for studying plasma interacting with flowing liquid lithium surface. Fusion Engineering and Design 2014. [DOI: 10.1016/j.fusengdes.2014.06.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Wang W, Feng B, Xiao J, Xia Z, Zhou X, Li P, Zhang W, Wang Y, Møller BL, Zhang P, Luo MC, Xiao G, Liu J, Yang J, Chen S, Rabinowicz PD, Chen X, Zhang HB, Ceballos H, Lou Q, Zou M, Carvalho LJCB, Zeng C, Xia J, Sun S, Fu Y, Wang H, Lu C, Ruan M, Zhou S, Wu Z, Liu H, Kannangara RM, Jørgensen K, Neale RL, Bonde M, Heinz N, Zhu W, Wang S, Zhang Y, Pan K, Wen M, Ma PA, Li Z, Hu M, Liao W, Hu W, Zhang S, Pei J, Guo A, Guo J, Zhang J, Zhang Z, Ye J, Ou W, Ma Y, Liu X, Tallon LJ, Galens K, Ott S, Huang J, Xue J, An F, Yao Q, Lu X, Fregene M, López-Lavalle LAB, Wu J, You FM, Chen M, Hu S, Wu G, Zhong S, Ling P, Chen Y, Wang Q, Liu G, Liu B, Li K, Peng M. Cassava genome from a wild ancestor to cultivated varieties. Nat Commun 2014; 5:5110. [PMID: 25300236 DOI: 10.1038/ncomms610] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 08/27/2014] [Indexed: 05/28/2023] Open
Abstract
Cassava is a major tropical food crop in the Euphorbiaceae family that has high carbohydrate production potential and adaptability to diverse environments. Here we present the draft genome sequences of a wild ancestor and a domesticated variety of cassava and comparative analyses with a partial inbred line. We identify 1,584 and 1,678 gene models specific to the wild and domesticated varieties, respectively, and discover high heterozygosity and millions of single-nucleotide variations. Our analyses reveal that genes involved in photosynthesis, starch accumulation and abiotic stresses have been positively selected, whereas those involved in cell wall biosynthesis and secondary metabolism, including cyanogenic glucoside formation, have been negatively selected in the cultivated varieties, reflecting the result of natural selection and domestication. Differences in microRNA genes and retrotransposon regulation could partly explain an increased carbon flux towards starch accumulation and reduced cyanogenic glucoside accumulation in domesticated cassava. These results may contribute to genetic improvement of cassava through better understanding of its biology.
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Affiliation(s)
- Wenquan Wang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Binxiao Feng
- 1] Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China [2] Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Jingfa Xiao
- Beijing Institute of Genomics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Zhiqiang Xia
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Xincheng Zhou
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Pinghua Li
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Weixiong Zhang
- 1] Department of Computer Science and Engineering and Department of Genetics, Washington University, Saint Louis, Missouri 63130, USA [2] Institute for Systems Biology, Jianghan University, Wuhan 430056, China
| | - Ying Wang
- South China Botanical Garden, CAS, Guangzhou 510650, China
| | - Birger Lindberg Møller
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Peng Zhang
- Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences of CAS, Shanghai 200032, China
| | - Ming-Cheng Luo
- Department of Plant Sciences, University of California, Davis, California 95616, USA
| | - Gong Xiao
- South China Botanical Garden, CAS, Guangzhou 510650, China
| | - Jingxing Liu
- Beijing Institute of Genomics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Jun Yang
- Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences of CAS, Shanghai 200032, China
| | - Songbi Chen
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Pablo D Rabinowicz
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Xin Chen
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Hong-Bin Zhang
- Department of Soil and Crop Sciences, Texas A&M University, College Station, Texas 77843, USA
| | - Henan Ceballos
- International Center for Tropical Agriculture (CIAT), Cali 6713, Colombia
| | - Qunfeng Lou
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Meiling Zou
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Luiz J C B Carvalho
- Brazilian Enterprise for Agricultural Research (EMBRAPA), Genetic Resources and Biotechnology, Brasilia 70770, Brazil
| | - Changying Zeng
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Jing Xia
- 1] Department of Computer Science and Engineering and Department of Genetics, Washington University, Saint Louis, Missouri 63130, USA [2] Institute for Systems Biology, Jianghan University, Wuhan 430056, China
| | - Shixiang Sun
- Beijing Institute of Genomics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Yuhua Fu
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Haiyan Wang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Cheng Lu
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Mengbin Ruan
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Shuigeng Zhou
- Shanghai Key Lab of Intelligent Information Processing, and School of Computer Science, Fudan University, Shanghai 200433, China
| | - Zhicheng Wu
- Shanghai Key Lab of Intelligent Information Processing, and School of Computer Science, Fudan University, Shanghai 200433, China
| | - Hui Liu
- Shanghai Key Lab of Intelligent Information Processing, and School of Computer Science, Fudan University, Shanghai 200433, China
| | - Rubini Maya Kannangara
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Kirsten Jørgensen
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Rebecca Louise Neale
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Maya Bonde
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Nanna Heinz
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Wenli Zhu
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Shujuan Wang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Yang Zhang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Kun Pan
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Mingfu Wen
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Ping-An Ma
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Zhengxu Li
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Meizhen Hu
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Wenbin Liao
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Wenbin Hu
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Shengkui Zhang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Jinli Pei
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Anping Guo
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Jianchun Guo
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Jiaming Zhang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Zhengwen Zhang
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Jianqiu Ye
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Wenjun Ou
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Yaqin Ma
- Department of Plant Sciences, University of California, Davis, California 95616, USA
| | - Xinyue Liu
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Luke J Tallon
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Kevin Galens
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Sandra Ott
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Jie Huang
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Jingjing Xue
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Feifei An
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Qingqun Yao
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Xiaojing Lu
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Martin Fregene
- International Center for Tropical Agriculture (CIAT), Cali 6713, Colombia
| | | | - Jiajie Wu
- Department of Plant Sciences, University of California, Davis, California 95616, USA
| | - Frank M You
- Department of Plant Sciences, University of California, Davis, California 95616, USA
| | - Meili Chen
- Beijing Institute of Genomics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Songnian Hu
- Beijing Institute of Genomics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Guojiang Wu
- South China Botanical Garden, CAS, Guangzhou 510650, China
| | - Silin Zhong
- State Key Laboratory of Agrobiotechnology, School of Life Sciences, Chinese University of Hong Kong, Hong Kong, China
| | - Peng Ling
- Citrus Research and Education Center (CREC), University of Florida, Gainesville, Florida 32611, USA
| | - Yeyuan Chen
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Qinghuang Wang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Guodao Liu
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Bin Liu
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Biogeography and Bioresources in Arid Land, Center of Systematic Genomics, Xinjiang Institute of Ecology and Geography, Urumqi 830011, China
| | - Kaimian Li
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Ming Peng
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
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Wang W, Feng B, Xiao J, Xia Z, Zhou X, Li P, Zhang W, Wang Y, Møller BL, Zhang P, Luo MC, Xiao G, Liu J, Yang J, Chen S, Rabinowicz PD, Chen X, Zhang HB, Ceballos H, Lou Q, Zou M, Carvalho LJCB, Zeng C, Xia J, Sun S, Fu Y, Wang H, Lu C, Ruan M, Zhou S, Wu Z, Liu H, Kannangara RM, Jørgensen K, Neale RL, Bonde M, Heinz N, Zhu W, Wang S, Zhang Y, Pan K, Wen M, Ma PA, Li Z, Hu M, Liao W, Hu W, Zhang S, Pei J, Guo A, Guo J, Zhang J, Zhang Z, Ye J, Ou W, Ma Y, Liu X, Tallon LJ, Galens K, Ott S, Huang J, Xue J, An F, Yao Q, Lu X, Fregene M, López-Lavalle LAB, Wu J, You FM, Chen M, Hu S, Wu G, Zhong S, Ling P, Chen Y, Wang Q, Liu G, Liu B, Li K, Peng M. Cassava genome from a wild ancestor to cultivated varieties. Nat Commun 2014; 5:5110. [PMID: 25300236 PMCID: PMC4214410 DOI: 10.1038/ncomms6110] [Citation(s) in RCA: 154] [Impact Index Per Article: 15.4] [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: 03/20/2014] [Accepted: 08/27/2014] [Indexed: 11/10/2022] Open
Abstract
Cassava is a major tropical food crop in the Euphorbiaceae family that has high carbohydrate production potential and adaptability to diverse environments. Here we present the draft genome sequences of a wild ancestor and a domesticated variety of cassava and comparative analyses with a partial inbred line. We identify 1,584 and 1,678 gene models specific to the wild and domesticated varieties, respectively, and discover high heterozygosity and millions of single-nucleotide variations. Our analyses reveal that genes involved in photosynthesis, starch accumulation and abiotic stresses have been positively selected, whereas those involved in cell wall biosynthesis and secondary metabolism, including cyanogenic glucoside formation, have been negatively selected in the cultivated varieties, reflecting the result of natural selection and domestication. Differences in microRNA genes and retrotransposon regulation could partly explain an increased carbon flux towards starch accumulation and reduced cyanogenic glucoside accumulation in domesticated cassava. These results may contribute to genetic improvement of cassava through better understanding of its biology.
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Affiliation(s)
- Wenquan Wang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Binxiao Feng
- 1] Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China [2] Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Jingfa Xiao
- Beijing Institute of Genomics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Zhiqiang Xia
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Xincheng Zhou
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Pinghua Li
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Weixiong Zhang
- 1] Department of Computer Science and Engineering and Department of Genetics, Washington University, Saint Louis, Missouri 63130, USA [2] Institute for Systems Biology, Jianghan University, Wuhan 430056, China
| | - Ying Wang
- South China Botanical Garden, CAS, Guangzhou 510650, China
| | - Birger Lindberg Møller
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Peng Zhang
- Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences of CAS, Shanghai 200032, China
| | - Ming-Cheng Luo
- Department of Plant Sciences, University of California, Davis, California 95616, USA
| | - Gong Xiao
- South China Botanical Garden, CAS, Guangzhou 510650, China
| | - Jingxing Liu
- Beijing Institute of Genomics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Jun Yang
- Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences of CAS, Shanghai 200032, China
| | - Songbi Chen
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Pablo D Rabinowicz
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Xin Chen
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Hong-Bin Zhang
- Department of Soil and Crop Sciences, Texas A&M University, College Station, Texas 77843, USA
| | - Henan Ceballos
- International Center for Tropical Agriculture (CIAT), Cali 6713, Colombia
| | - Qunfeng Lou
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Meiling Zou
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Luiz J C B Carvalho
- Brazilian Enterprise for Agricultural Research (EMBRAPA), Genetic Resources and Biotechnology, Brasilia 70770, Brazil
| | - Changying Zeng
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Jing Xia
- 1] Department of Computer Science and Engineering and Department of Genetics, Washington University, Saint Louis, Missouri 63130, USA [2] Institute for Systems Biology, Jianghan University, Wuhan 430056, China
| | - Shixiang Sun
- Beijing Institute of Genomics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Yuhua Fu
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Haiyan Wang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Cheng Lu
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Mengbin Ruan
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Shuigeng Zhou
- Shanghai Key Lab of Intelligent Information Processing, and School of Computer Science, Fudan University, Shanghai 200433, China
| | - Zhicheng Wu
- Shanghai Key Lab of Intelligent Information Processing, and School of Computer Science, Fudan University, Shanghai 200433, China
| | - Hui Liu
- Shanghai Key Lab of Intelligent Information Processing, and School of Computer Science, Fudan University, Shanghai 200433, China
| | - Rubini Maya Kannangara
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Kirsten Jørgensen
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Rebecca Louise Neale
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Maya Bonde
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Nanna Heinz
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen 1165, Denmark
| | - Wenli Zhu
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Shujuan Wang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Yang Zhang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Kun Pan
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Mingfu Wen
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Ping-An Ma
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Zhengxu Li
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Meizhen Hu
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Wenbin Liao
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Wenbin Hu
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Shengkui Zhang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Jinli Pei
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Anping Guo
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Jianchun Guo
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Jiaming Zhang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Zhengwen Zhang
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Jianqiu Ye
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Wenjun Ou
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Yaqin Ma
- Department of Plant Sciences, University of California, Davis, California 95616, USA
| | - Xinyue Liu
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Luke J Tallon
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Kevin Galens
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Sandra Ott
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Jie Huang
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Jingjing Xue
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Feifei An
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Qingqun Yao
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Xiaojing Lu
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Martin Fregene
- International Center for Tropical Agriculture (CIAT), Cali 6713, Colombia
| | | | - Jiajie Wu
- Department of Plant Sciences, University of California, Davis, California 95616, USA
| | - Frank M You
- Department of Plant Sciences, University of California, Davis, California 95616, USA
| | - Meili Chen
- Beijing Institute of Genomics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Songnian Hu
- Beijing Institute of Genomics, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Guojiang Wu
- South China Botanical Garden, CAS, Guangzhou 510650, China
| | - Silin Zhong
- State Key Laboratory of Agrobiotechnology, School of Life Sciences, Chinese University of Hong Kong, Hong Kong, China
| | - Peng Ling
- Citrus Research and Education Center (CREC), University of Florida, Gainesville, Florida 32611, USA
| | - Yeyuan Chen
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Qinghuang Wang
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
| | - Guodao Liu
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Bin Liu
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Biogeography and Bioresources in Arid Land, Center of Systematic Genomics, Xinjiang Institute of Ecology and Geography, Urumqi 830011, China
| | - Kaimian Li
- Tropical Crop Genetic Resources Institute, CATAS, Danzhou 571700, China
| | - Ming Peng
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou 571101, China
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Xinzhou H, Ning Y, Ou W, Xiaodan L, Fumin Y, Huitu L, Wei Z. RKIP inhibits the migration and invasion of human prostate cancer PC-3M cells through regulation of extracellular matrix. Mol Biol 2011. [DOI: 10.1134/s0026893311060197] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Xinzhou H, Ning Y, Ou W, Xiaodan L, Fumin Y, Huitu L, Wei Z. RKIp inhibits the migration and invasion of human prostate cancer PC-3M cells through regulation of extracellular matrix. Mol Biol (Mosk) 2011; 45:1004-1011. [PMID: 22295570] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Raf kinase inhibitor protein (RKIP) plays a pivotal role in several intracellular signaling cascades and has been implicated as a metastasis suppressor in multiple cancer cells including prostate cancer cells, but the mechanism is not very clear. In this study, we investigated the effect of RKIP on cell proliferation, migration and invasion using human prostate cancer PC-3M cells as a model system. Our results indicate that RKIP does not effect cell proliferation in PC-3M cells, but inhibits both cell migration and cell invasion. In association with this inhibitory effect, RKIP down-regulates matrix metalloproteinases (MMP-2 and MMP-9), cathepsin B and urinary plasminogen activator (uPA). Also RKIP has the ability to regulate the expression of E-cadherin. But ectopic expression of RKIP does not affect the level of the Snail protein. As it has been indicated here, RKIP inhibits the migration and invasion ability of human prostate cancer cells through regulation of the extracellular matrix. These findings provide new mechanistic insight how RKIP suppresses metastasis in vitro.
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Affiliation(s)
- H Xinzhou
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, College of Life Sciences, Beijing Normal University, 100875
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25
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Fang Q, Wang S, Ou W, Yang H. Differential expression of EGFR mutations between primary and corresponding mediastinal nodal metastases in postoperative stage N2 non-small cell lung cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21034] [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: 11/20/2022] Open
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Wang S, Yang H, Ou W, Fang Q. Front-line treatment for advanced pulmonary adenocarcinoma based on EGFR mutation status. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e18043] [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: 11/20/2022] Open
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27
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Li K, Zhu W, Zeng K, Zhang Z, Ye J, Ou W, Rehman S, Heuer B, Chen S. Proteome characterization of cassava (Manihot esculenta Crantz) somatic embryos, plantlets and tuberous roots. Proteome Sci 2010; 8:10. [PMID: 20187967 PMCID: PMC2842255 DOI: 10.1186/1477-5956-8-10] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [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: 09/14/2009] [Accepted: 02/27/2010] [Indexed: 11/30/2022] Open
Abstract
Background Proteomics is increasingly becoming an important tool for the study of many different aspects of plant functions, such as investigating the molecular processes underlying in plant physiology, development, differentiation and their interaction with the environments. To investigate the cassava (Manihot esculenta Crantz) proteome, we extracted proteins from somatic embryos, plantlets and tuberous roots of cultivar SC8 and separated them by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). Results Analysis by liquid chromatography-electrospray ionisation-tandem mass spectrometry (LC-ESI-MS/MS) yielded a total of 383 proteins including isoforms, classified into 14 functional groups. The majority of these were carbohydrate and energy metabolism associated proteins (27.2%), followed by those involved in protein biosynthesis (14.4%). Subsequent analysis has revealed that 54, 59, 74 and 102 identified proteins are unique to the somatic embryos, shoots, adventitious roots and tuberous roots, respectively. Some of these proteins may serve as signatures for the physiological and developmental stages of somatic embryos, shoots, adventitious roots and tuberous root. Western blotting results have shown high expression levels of Rubisco in shoots and its absence in the somatic embryos. In addition, high-level expression of α-tubulin was found in tuberous roots, and a low-level one in somatic embryos. This extensive study effectively provides a huge data set of dynamic protein-related information to better understand the molecular basis underlying cassava growth, development, and physiological functions. Conclusion This work paves the way towards a comprehensive, system-wide analysis of the cassava. Integration with transcriptomics, metabolomics and other large scale "-omics" data with systems biology approaches can open new avenues towards engineering cassava to enhance yields, improve nutritional value and overcome the problem of post-harvest physiological deterioration.
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Affiliation(s)
- Kaimian Li
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Hainan Province, China.
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Fang Q, Ou W, Radhakrishnan H, Huppert TJ, Hämäläinen M, Franceschini MA, Boas DA. A state-space approach for modeling simultaneous MEG and diffuse optical imaging measurements. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70584-1] [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: 11/28/2022] Open
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Abstract
7563 Background: We evaluate effect of postoperative adjuvant chemotherapy on overall survival after complete resection of stage III-N2 non-small-cell lung cancer. Methods: From Jan.1999 to Dec. 2003, a total of 150 stage III-N2 non-small cell lung cancer patients randomly received four cycles of chemotherapy (NVB25mg/m2, D1,D5 or paclitaxel 175mg/m2, D1 / carboplatin AUC=5, D1) or observation after operation. Results: The median survival for the 150 patients was 879 days, with a 1-year survival rate of 81%, 3-year survival rate of 43%, and 5-year survival rate of 28%.There was significant difference in median survival between chemotherapy and control group (897 days vs 821 days p=0.04), and also there was significant difference in 5-year survival rate (30% vs 24% p<0.05). The most common site of recurrence was brain. 26% (39/150) of patients recurred in the brain as their first site, 22% (18/79) for chemotherapy group, 29% (21/71) for control group. The median survival time for brain metastasis patients between chemotherapy and control group is no difference (812 days vs 512 days, p=0.122), but there was significant difference in 2-year survival rate (66.71% vs 37.6% p<0.05). Conclusions: Postoperative adjuvant chemotherapy dose significantly improves median survival among completely resected stage III-N2 non-small-cell lung cancer patients, and significantly improves 5-year survival rate. It dose not decrease incidence of brain metastasis but postpone the time of brain metastasis in chemotherapy group. No significant financial relationships to disclose.
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Affiliation(s)
- S. Wang
- Cancer Center Sun Yat-Sen University, Guangzhou, China; Guangdong Province People's Hospital, Guangzhou, China
| | - W. Ou
- Cancer Center Sun Yat-Sen University, Guangzhou, China; Guangdong Province People's Hospital, Guangzhou, China
| | - H. Sun
- Cancer Center Sun Yat-Sen University, Guangzhou, China; Guangdong Province People's Hospital, Guangzhou, China
| | - H. Yang
- Cancer Center Sun Yat-Sen University, Guangzhou, China; Guangdong Province People's Hospital, Guangzhou, China
| | - X. Ye
- Cancer Center Sun Yat-Sen University, Guangzhou, China; Guangdong Province People's Hospital, Guangzhou, China
| | - Q. Fang
- Cancer Center Sun Yat-Sen University, Guangzhou, China; Guangdong Province People's Hospital, Guangzhou, China
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Wang S, Ye X, Ou W, Lin Y, Zhang B, Yan H. Risk of cerebral metastases for postoperative locally advanced non-small cell lung cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.8113] [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: 11/20/2022] Open
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Guo Z, Ou W, Lu S, Zhong Q. Differential responses of antioxidative system to chilling and drought in four rice cultivars differing in sensitivity. Plant Physiol Biochem 2006; 44:828-36. [PMID: 17098438 DOI: 10.1016/j.plaphy.2006.10.024] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2006] [Accepted: 10/10/2006] [Indexed: 05/12/2023]
Abstract
Responses of antioxidative defense systems to chilling and drought stresses were comparatively studied in four cultivars of rice (Oryza sativa L.) differing in sensitivity, two of them (Xiangnuo no. 1 and Zimanuo) are tolerant to chilling but sensitive to drought and the other two (Xiangzhongxian no. 2 and IR50) are tolerant to drought but sensitive to chilling. The seedlings of rice were transferred into growth chamber for 5 d at 8 degrees C as chilling treatment, or at 28 degrees C as control, or at 28 degrees C but cultured in 23% PEG-6000 solution as drought stress treatment. Under drought stress the elevated levels of electrolyte leakage, contents of H(2)O(2) and total thiobarbituric acid-reacting substances (TBARS) in Xiangzhongxian no. 2 and IR50 are lower than those in Xiangnuo no. 1 and Zimanuo. On the contrary, Xiangnuo no. 1 and Zimanuo have much lower level of electrolyte leakage, H(2)O(2) and TBARS than Xiangzhongxian no. 2 and IR50 under chilling stress. Activities of antioxidant enzymes (superoxide dismutase (SOD), catalase, and ascorbate-peroxidase (APX)) and contents of antioxidants (ascorbaic acid and reduced glutathione) were measured during the stress treatments. All of them were enhanced greatly until 3 d after drought stress in the two drought-tolerant cultivars, or after chilling stress in the two chilling-tolerant cultivars. They all were decreased at 5 d after stress treatments. On the other hand, activities of antioxidant enzymes and contents of antioxidants were decreased greatly in the drought-sensitive cultivars after drought stress, or in the chilling-sensitive cultivars after chilling stress. The results indicated that tolerance to drought or chilling in rice is well associated with the enhanced capacity of antioxidative system under drought or chilling condition, and that the sensitivity of rice to drought or chilling is linear correlated to the decreased capacity of antioxidative system.
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Affiliation(s)
- Z Guo
- Biotechnology Laboratory for Turfgrass and Forages, College of Life Science, South China Agricultural University, Guangzhou 510642, China.
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Abstract
Fatty acid synthase (FASN), a key enzyme for de novo lipogenesis, is overexpressed in many malignant tumours and is associated with aggressive biological behaviour. FASN expression and its possible relationship with more aggressive behaviour in gastrointestinal stromal tumours (GISTs) have not been addressed to date. Here, FASN expression was assessed by immunohistochemistry in 60 primary GISTs (28 low/intermediate risk and 32 high risk) and seven metastatic GISTs. Sixteen smooth muscle gastrointestinal tumours were used as controls. FASN was overexpressed in 36 of 60 GISTs (60%): in 12 of 28 (42%) low/intermediate-risk GISTs and in 24 of 32 (75%) high-risk GISTs (p<0.05). Two primary and seven metastatic GISTs and five GIST cell lines (GIST882, GIST430, GIST522, GIST62, and GIST48), analysed by western blot, showed variable FASN expression. Most metastatic samples expressed high levels of FASN protein. Additionally, seven of 60 GISTs showed a proliferation rate higher than 10% by Ki67 and all of them expressed FASN (p<0.04). Finally, proliferation and apoptosis were investigated after FASN silencing in GIST882 cells, which displayed the highest FASN expression. siRNA-mediated FASN knock-down inhibited expression of the proliferation marker cyclin A, whereas no changes in p27 and cleaved PARP expression were seen. It is concluded that FASN is preferentially overexpressed in high-risk and metastatic GISTs, and that its overexpression likely contributes to cell proliferation.
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Affiliation(s)
- S Rossi
- Department of Pathology, Regional Hospital, Treviso, Italy, and Department of Medical Oncology, Harvard Medical School, Boston, MA, USA
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Tsuji K, Yamamoto S, Ou W, Nishi N, Kobayashi I, Zaitsu M, Muro E, Sadakane Y, Ichimaru T, Hamasaki Y. dsRNA enhances eotaxin-3 production through interleukin-4 receptor upregulation in airway epithelial cells. Eur Respir J 2006; 26:795-803. [PMID: 16264039 DOI: 10.1183/09031936.05.00010805] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The exacerbation of asthma during viral infections is mainly explained by neutrophils infiltrating into the airways. However, enhanced functions of eosinophils are also observed. The aim of this study was to reveal the mechanism of how eosinophils are activated during and after viral infection of the airways, using a model of viral infection. A synthetic double-stranded RNA, poly inosinic-cytidyric acid (poly(IC)), was transfected to a human airway epithelial cell line (BEAS-2B) and the primary bronchial epithelial cells, to mimic a viral infection. The production of chemokines from the cells was investigated. The transfection of poly(IC), alone, marginally affected the eotaxin-3 production of the cells. However, the transfection of poly(IC) prior to interleukin (IL)-4 stimulation enhanced eotaxin-3 production. Poly(IC) transfection increased mRNA and protein expressions of IL-4 receptor (R)alpha and IL-2Rgamma, components of the IL-4R. In BEAS-2B cells, IL-4-mediated phosphorylation of signal transducer and activator of transcription six was enhanced in poly(IC) transfected cells. This was reversed by the addition of anti-IL-4Ralpha antibody, suggesting the role of an increased number of IL-4 receptors in enhanced IL-4-induced eotaxin-3 production. Poly(IC)-induced upregulation of IL-4Ralpha was inhibited by treatment with cycloheximide or dexamethasone. In conclusion, these results suggest that viral airway infection may enhance interleukin-4-induced eotaxin-3 production through upregulation of the interleukin-4 receptor in airway epithelial cells.
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Affiliation(s)
- K Tsuji
- Dept of Pediatrics, Saga University School of Medicine, 5-1-1 Nabeshima, Saga-City, Saga 849-8501, Japan
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Zhong W, Qiao G, Xie D, Guan X, Ou W, Yang X, Lin J, Henning W, Stuerzbecher H, Wu Y. P-142 Prognostic role of e-cadherin in resected non-small-cell lungcancer detected by immunohistochemistry on high-throughput tissue microarray. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)80636-1] [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: 10/25/2022]
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Huang H, Ou W, Zhao J, Chen D, Wang L. A comparative study of quantitative structure-activity relationship methods based on gallic acid derivatives. SAR QSAR Environ Res 2004; 15:83-99. [PMID: 15199945 DOI: 10.1080/10629360410001665875] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
By using hologram quantitative structure-activity relationship (HQSAR) and comparative molecular field analysis (CoMFA) methods, the relationships between the structures of 49 gallic acid derivatives and their analgesic activity have been investigated to yield statistically reliable models with considerable predictive power. The best HQSAR model was generated using atoms, bond and connectivity as fragment distinction parameters and fragment size 5-7 from a hologram length of 307 with 3 components. High conventional r2 (r2 = 0.825) and cross-validation r2 (r2(cv) = 0.726) values were obtained. CoMFA analyses varying lattice size and location, grid spacing, probe charges and using, Tripos standard and Indicator force field were performed. The best model was developed with 4 components using sp3-hybridized carbon atom with +1.0 charge as probe, grid spacing (2 A), lattice offset (1.0, 3.0, -2.5). The CoMFA model showed a conventional correlation coefficient r2 of 0.889 and across-validation r2(cv) equals to 0.633. The robustness and predictive ability of the HQSAR and CoMFA models have been validated by means of an external test set. The results indicate that both models possess high statistical quality in the prediction of analgesic potency of novel gallic acid analogs.
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Affiliation(s)
- H Huang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093, People's Republic of China.
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Wang S, Wu Y, Ou W. [Skip metastasis to the mediastinal lymph nodes in non-small cell lung cancer]. Zhonghua Zhong Liu Za Zhi 2001; 23:259-61. [PMID: 11783103] [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: 02/23/2023]
Abstract
OBJECTIVE To ascertain if any difference exists in clinical characteristics between resected non-small cell lung cancer (NSCLC) with either skip or ordinary mediastinal lymph node metastases. METHODS Among 176 patients with stage IIIAN2 disease between 1982-1994 treated in our hospital, 53 had no metastasis at the hilar lymph nodes [skip(+) group] while 123 had [skip(-) group]. To investigate the extent of nodal involvement, the mediastinal lymph nodes were divided into three regions. RESULTS In the skip(+) group, mediastinal node metastasis was found in only one region in 49 of the 53 patients(92.4%), whereas 45 of the 123 patients(36.6%) from the skip (-) group revealed medinastinal metastasis at two or three regions The overall survival rate at 5 years after operation was 29.3% in the skip(+) group and 12.2% in the skip (-) group (P = 0.038). Furthermore, regarding patients with mediactint node metantion in one region, the skip(+) group had a better prognosis than the skip (-) group (32.1% vs 15.3%, P = 0.042). CONCLUSION These results suggest that patients with skip mediastinal lymph node metastases represent a unique subgroup of N2 disease.
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Affiliation(s)
- S Wang
- Cancer Center, Sun Yet-sen University of Medical Sciences, Guangzhou 510060, China
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Wu YI, Wang SY, Huang ZF, Yang XN, Ou W, Yu H. The importance of systematic mediastinal lymphadenectomy in resectable non-small Cell Lung Cancer — Results of a prospective randomized trial. Lung Cancer 2000. [DOI: 10.1016/s0169-5002(00)80453-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wang SY, Wu YI, Ou W, Yang XN. Skip metastasis to the mediastinal lymph nodes in NSCLC. Lung Cancer 2000. [DOI: 10.1016/s0169-5002(00)80456-0] [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: 10/27/2022]
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Wang S, Wu Y, Ou W, Yang X, Yu H. [Survival and prognosis after pneumonectomy for non-small cell lung cancer (NSCLC) in the elderly]. Zhongguo Fei Ai Za Zhi 2000; 3:195-7. [PMID: 20950549 DOI: 10.3779/j.issn.1009-3419.2000.03.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND To study the probability and prognosis after pneumonectomy for NSCLC in the elderly. METHODS From 1985 to 1995 , pneumonectomy was performed in 122 patients with non-small cell lung cancer. Of the 122 patients , 23 cases were 65 years old or older ( study group) and the other 99 cases were less than 65 years old. Five-year survival , operative complications and mortality , and change of lung functions before and after operation were compared between the two groups. Kaplan-meier method was used to analyzed the survival. RESULTS The 5-year survival for the study group was similar to that for the control group (27. 56 % vs 30. 51 % , P > 0. 05) , but the mortality in the study group was significantly higher than that in the control group (13. 04 % vs 2. 02 % , P < 0. 05) . There was no significant difference between the pre-operative and post-operative lung function for both groups. CONCLUSIONS Pneumonectomy in elderly patients with NSCLC appears to be applicable. However , it shoud be performed only in carefully selected patients because of the increased operative risk and death.
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Affiliation(s)
- S Wang
- Lung Cancer Research Center , Sun Yet-sen University of Medical Sciences , Guangzhou , Guangdong 510060 , P. R. China
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Nakamura K, Matsushita T, Mamada K, Okazaki H, Ou W, Okuma Y, Kurokawa T. Changes of callus diameter during axial loading and after fixator removal in leg lengthening. Arch Orthop Trauma Surg 1998; 117:464-7. [PMID: 9801783 DOI: 10.1007/s004020050294] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
We retrospectively reviewed nine tibial lengthenings in seven achondroplastic patients. The callotasis method was used, and a unilateral type lengthener, either the Dynamic Axial Fixator (Orthofix, Italy; eight legs) or the High Functional Fixator (Matsumoto Co., Japan; one leg), was applied. The distracted length averaged 14.6 (range 10-18) cm. The minimum diameter of the callus was measured using a ruler on anteroposterior and lateral radiographs. The callus diameter ratio (%) was calculated as the callus diameter divided by the original diaphysis diameter. For periods during axial loading and after removal of the fixator in each patient, a single regression line was drawn on the callus diameter ratio data using the least squares method, and the diameter change rate (%/day) was evaluated by inclination of this line. The diameter change rates during axial loading were negative in six legs, but those after fixator removal were positive in all legs, and the latter were significantly greater than the former. The diameter change rates after fixator removal on the anteroposterior radiographs were negatively correlated with the callus diameter ratio at the time of fixator removal (r = 0.84, P = 0.0008). Simple axial loading may not be a sufficient mechanial environment for restoration of the physiological shape, and it is important to be aware that we cannot expect the callus diameter to increase by this means alone.
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Affiliation(s)
- K Nakamura
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tokyo, Japan
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Mamada K, Nakamura K, Matsushita T, Okazaki H, Shiro R, Ou W, Tanaka K, Kurokawa T. The diameter of callus in leg lengthening: 28 tibial lengthenings in 14 patients with achondroplasia. Acta Orthop Scand 1998; 69:306-10. [PMID: 9703409 DOI: 10.3109/17453679809000936] [Citation(s) in RCA: 3] [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] [Indexed: 11/13/2022]
Abstract
We investigated the relation between callus diameter during bone distraction and the occurrence of late fracture and deformity. We retrospectively reviewed 28 tibial lengthenings in 14 patients with achondroplasia. The minimal diameter of the lengthened zone was measured on radiographs, when the sliding mechanism of the lengthening device was released, and the callus diameter ratio in two planes (CDR; diameter of the callus/diameter of the tibia at the level of the osteotomy end) was calculated. The CDR correlated negatively with the distracted length. Late fracture or late angular deformity occurred in 6 of the 28 lengthenings. When the CDR was 85% or more in both planes, these complications did not occur, but when the CDR was 80% or less in either plane, they occurred in 6 of 20 bones. Careful attention should therefore be given not only to the continuity of the callus but also to its diameter.
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Affiliation(s)
- K Mamada
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tokyo, Japan
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Hung SC, Nakamura K, Matsushita T, Okazaki H, Shiro R, Mamada K, Tanaka K, Ou W, Kurokawa T. Influence of femoral lengthening on hip joint space in posttraumatic femoral shortening. Acta Orthop Scand 1997; 68:541-4. [PMID: 9462353 DOI: 10.3109/17453679708999023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We performed femoral lengthening for post-traumatic femoral shortening in 14 patients (10 men). The mean age was 26 (17-33) years. The callotasis method was employed using an Orthofix or Hifixator monolateral external fixator. The average length gained was 6 (3-13) cm, equal to 16 (7-36)%. The mean narrowing ratio of the hip joint space during lengthening was 9 (0-26)% and the narrowing persisted at the final follow-up. Cases with narrowing greater than 5% had a longer time between the development of the shortening and the lengthening than the others (p = 0.03). Our findings indicate that femoral lengthening for posttraumatic femoral shortening should be done as early as possible to prevent the development of joint space narrowing during the lengthening procedure.
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Affiliation(s)
- S C Hung
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tokyo, Japan.
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Tanaka K, Kurokawa T, Nakamura K, Matsushita T, Horinaka S, Kusaba I, Okazaki H, Mamada K, Shiro R, Ou W, Hung SC. Callus formation in femur and tibia during leg lengthening: 7 patients examined with DXA. Acta Orthop Scand 1996; 67:158-60. [PMID: 8623571 DOI: 10.3109/17453679608994662] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We examined the callus formation during leg lengthening in 7 achondroplastic patients who underwent 3 bilateral femoral and 4 bilateral tibial lengthenings. Bone mineral content and bone mineral density (BMD) in the lengthened callus space were evaluated every 1 or 2 weeks for 10 weeks after the start of distraction using dual energy X-ray absorptiometry. The mean rate of callus mineralization in femurs (0.64 g/wk) was higher than in tibias (0.22 g/wk). The mean BMD at 10 weeks after the start was 0.35 g/cm2 in the femur and 0.14 g/cm2 in the tibia. Different rates of callus formation in different kinds of long tubular bones have not been reported previously.
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Affiliation(s)
- K Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tokyo, Japan
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Nakamura K, Kurokawa T, Matsushita T, Ou W, Okazaki H, Takahashi M. Prevention of equinus deformity during tibial lengthening. Comparison of passive stretching with an orthosis. Int Orthop 1996; 20:359-62. [PMID: 9049764 DOI: 10.1007/s002640050097] [Citation(s) in RCA: 4] [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] [Indexed: 02/03/2023]
Abstract
We have reviewed 28 tibial lengthenings in 14 patients with achondroplasia at an average age of 15 years, and compared the effectiveness of physiotherapy and an orthosis in preventing an equinus deformity. Physiotherapy of 15 min a day was ineffective even when the patients were able to walk. An orthosis worn for 16 h a day prevented equinus deformity up to at least 50% of lengthening, and the difference from physiotherapy was significant at more than 30% of lengthening.
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Affiliation(s)
- K Nakamura
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tokyo, Japan
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Park NG, Aoyagi H, Lee S, Kato T, Jinkawa S, Ou W, Ito A. Effects of model extension peptides containing glycine, proline and serine residues on the import of mitochondrial enzyme precursors into mitochondria. Pept Res 1989; 2:178-83. [PMID: 2520755] [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: 01/01/2023]
Abstract
We found previously that Ac-(Leu-Leu-Ala-Arg-Leu)3-NHCH3 (5(3)), a model of the extension peptide of cytochrome P-450(SCC) precursor, strongly inhibited the import of the precursor into mitochondria. Unexpectedly, however, 5(3) showed the break of respiratory control of mitochondria. In the present study, desAc- [Pro7, Ser10] 5(3) (1), [Pro7, Ser10] 5(3) (2), desAc- [Gly5, Pro7, Ser10] 5(3) (3) and [Gly5, Pro7, Ser10] 5(3) (4) were synthesized in order to investigate the influence of the Gly, Pro and Ser residues, which are present in the extension peptide, on the import and respiration. CD measurement indicated that all the peptides had an alpha-helical conformation in the presence of DPPC-DPPG (3:1) liposomes. The order of the content of alpha-helical conformation was 5(3) greater than 1, 2 greater than 3, 4, while SEP1-15 (N-terminal 1-15 fragment of the extension peptide of cytochrome P-450(SCC) precursor) showed no alpha-helical structure. The measurements of dye-leakage from liposomes, import-inhibition of P-450(SCC) and adrenodoxin precursors and respiratory inhibition of mitochondria indicated that 3 and 4, rather than 1 and 2, are similar to SEP1-15, and that the glycine residue in the extension peptide is of considerable importance for the import of the precursors.
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Abstract
Galactosylsphingosine, glucosylsphingosine and sphingosine all inhibited cytochrome c oxidase activity in mitochondria from rat liver; more than 50% inhibition was caused by 5 microM lipid (0.1 mumol/mg mitochondrial protein). However, these lysosphingolipids did not suppress the activity of purified cytochrome c oxidase. When the enzyme was "reconstituted" with phosphatidylcholine, the lysosphingolipids clearly inhibited the activity. On the other hand, galactosylsphingosine, glucosylsphingosine and sphingosine all hemolyzed erythrocytes, indicating that lysosphingolipids can disrupt the membrane. Thus, it appears that the inhibition of cytochrome c oxidase, a membrane-bound enzyme in mitochondria, is due to perturbation of the environment of the enzyme and that the primary attacking site of the lysosphingolipids is the membrane. Because the potency to inhibit cytochrome c oxidase and to hemolyze erythrocytes did not differ among these lysosphingolipids and because galactosylceramide caused neither inhibition of cytochrome c oxidase nor hemolysis, the free amino group in the lysosphingolipids seems to be essential to give the effects. In addition, both inhibition of cytochrome c oxidase and hemolysis caused by lysosphingolipids were completely abolished by albumin, suggesting that toxic effects of lysosphingolipids may not be apparent in blood.
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Affiliation(s)
- H Igisu
- Department of Environmental Toxicology, University of Occupational and Environmental Health, Kitakyushu, Japan
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Ito A, Ogishima T, Ou W, Omura T, Aoyagi H, Lee S, Mihara H, Izumiya N. Effects of synthetic model peptides resembling the extension peptides of mitochondrial enzyme precursors on import of the precursors into mitochondria. J Biochem 1985; 98:1571-82. [PMID: 4093445 DOI: 10.1093/oxfordjournals.jbchem.a135426] [Citation(s) in RCA: 61] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
One common and characteristic feature of the extension peptides of mitochondrial enzyme precursors is the presence of repeating short stretches of uncharged amino acids linked by basic amino acids. We synthesized several model peptides having this particular feature of the extension peptides. The peptides contained arginine or lysine as a basic amino acid residue linking sequences of two to four residues of leucine and alanine. We examined the effects of the peptides on the import of the precursors of two mitochondrial enzymes, cytochrome P-450(SCC) and adrenodoxin, and found that the peptides were generally inhibitory to the import of the precursors into mitochondria. The effective concentrations of some of the inhibitory peptides were as low as a few microM. The peptides containing lysine instead of arginine had an essentially similar inhibitory effect on the import. The peptides did not inhibit the binding of pre-P450(SCC) to the surface of mitochondria. The synthetic model peptides uncoupled oxidative phosphorylation of mitochondria prepared from either rat liver or bovine adrenal cortex, and induced leakage of enzymes from the inner compartments of mitochondria. However, the synthetic model peptides did not solubilize membrane-bound enzymes from mitochondria, suggesting that their effect on the membranes is different from that of detergents. The synthetic model peptides seem to bind to the membranes causing significant perturbation in the membrane structure, which is possibly related to the functions of the particular common sequence found in the extension peptides of mitochondrial enzyme precursors.
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Gillis S, Ferm MM, Ou W, Smith KA. T cell growth factor: parameters of production and a quantitative microassay for activity. J Immunol 1978; 120:2027-32. [PMID: 307029] [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: 12/14/2022]
Abstract
Several soluble factors have recently been associated with the proliferation and differentiation of thymus-derived lymphocytes. One of these factors present in medium conditioned by T cell mitogen-stimulated lymphocytes has the ability to promote the long-term culture of normal and antigen-specific cytotoxic T cells. We report a method to test for this proliferative stimulus in the form of a sensitive microassay based upon the tritiated-thymidine incorporation of continuous murine tumor-specific cytotoxic T cell lines (CTLL). The microassay requires microliter quantitites of sample fluid and is amenable to quantitative analysis. This highly reproducible, quantitative assay for T cell growth factor (TCGF) has allowed investigation as to the kinetics of TCGF generation and has revealed that T lymphocytes are required for its production. Further investigation has supported the notion that this nonspecies-specific factor is actively removed from tissue culture medium by the proliferation of either T cell mitogen-activated lymphocytes or CTLL.
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