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Feng L, Zhou C, Su Q, Xu M, Yue H, Zhang S, Zhou B. Fine-mapping and candidate gene analysis of qFS-Chr. D02, a QTL for fibre strength introgressed from a semi-wild cotton into Gossypium hirsutum. Plant Sci 2020; 297:110524. [PMID: 32563462 DOI: 10.1016/j.plantsci.2020.110524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 02/12/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Fibre strength (FS) is an important quality attribute in the modern textile industry, which is genetically controlled by quantitative trait loci (QTLs). Fine-mapping stable QTLs for FS to identify candidate genes would be valuable for uncovering the genetic basis of fibre quality traits in cotton. Here, a single segment introgression line, IL-D2-2, from the cross of (TM-1×TX-1046) reported in our previous studies, was found to have significantly improved FS compared with the recurrent parent TM-1. To fine-map the QTLs of the FS, we further crossed IL-D2-2 with its recurrent parent TM-1 to produce F2 and F2:3 populations. QTL analysis and substitution mapping showed qFS-Chr. D02 was anchored into a 550.66 kb-interval between two markers, INTR1027 and JESPR-231. This interval contained 67 genes, among which 27 genes related to cell-wall synthesis were selected to conduct qRT-PCR. The results revealed seven genes were expressed significantly differently during the fibre secondary-wall-thickening stage (10-25 days post-anthesis), three being upregulated and four downregulated in IL-D2-2. Both GH_D02G2269 (UDP-glucosyl transferase 84B1) and GH_D02G2289 (unknown function (DUF869)) with nonsynonymous SNPs in IL-D2-2 had significantly downregulated expression, suggesting they were candidates for qFS-Chr. D02. This research provides information about marker-assisted selection for cotton fibre strength improvement.
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Affiliation(s)
- Liuchun Feng
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, MOE Hybrid Cotton R&D Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Chenhui Zhou
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, MOE Hybrid Cotton R&D Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Qiao Su
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, MOE Hybrid Cotton R&D Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Min Xu
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, MOE Hybrid Cotton R&D Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Haoran Yue
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, MOE Hybrid Cotton R&D Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China
| | - Shuwen Zhang
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, MOE Hybrid Cotton R&D Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China; Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, Zhejiang, People's Republic of China
| | - Baoliang Zhou
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, MOE Hybrid Cotton R&D Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, People's Republic of China.
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Gao L, Chen W, Xu X, Zhang J, Singh TK, Liu S, Zhang D, Tian L, White A, Shrestha P, Zhou XR, Llewellyn D, Green A, Singh SP, Liu Q. Engineering Trienoic Fatty Acids into Cottonseed Oil Improves Low-Temperature Seed Germination, Plant Photosynthesis and Cotton Fiber Quality. Plant Cell Physiol 2020; 61:1335-1347. [PMID: 32379869 DOI: 10.1093/pcp/pcaa062] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/30/2020] [Indexed: 05/14/2023]
Abstract
Alpha-linolenic acid (ALA, 18:3Δ9,12,15) and γ-linolenic acid \ (GLA, 18:3Δ6,9,12) are important trienoic fatty acids, which are beneficial for human health in their own right, or as precursors for the biosynthesis of long-chain polyunsaturated fatty acids. ALA and GLA in seed oil are synthesized from linoleic acid (LA, 18:2Δ9,12) by the microsomal ω-3 fatty acid desaturase (FAD3) and Δ6 desaturase (D6D), respectively. Cotton (Gossypium hirsutum L.) seed oil composition was modified by transforming with an FAD3 gene from Brassica napus and a D6D gene from Echium plantagineum, resulting in approximately 30% ALA and 20% GLA, respectively. The total oil content in transgenic seeds remained unaltered relative to parental seeds. Despite the use of a seed-specific promoter for transgene expression, low levels of GLA and increased levels of ALA were found in non-seed cotton tissues. At low temperature, the germinating cottonseeds containing the linolenic acid isomers elongated faster than the untransformed controls. ALA-producing lines also showed higher photosynthetic rates at cooler temperature and better fiber quality compared to both untransformed controls and GLA-producing lines. The oxidative stability of the novel cottonseed oils was assessed, providing guidance for potential food, pharmaceutical and industrial applications of these oils.
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Affiliation(s)
- Lihong Gao
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
- Department of Biological Sciences, Changchun Normal University, 677 Changji North Road, Changchun, Jilin 130032, China
| | - Wei Chen
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
- College of Science, Beihua University, 15 Jilin Street, Jilin, Jilin 130024, China
| | - Xiaoyu Xu
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
| | - Jing Zhang
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
| | - Tanoj K Singh
- CSIRO Agriculture & Food, Sneydes Road, Werribee, VIC 3030, Australia
| | - Shiming Liu
- CSIRO Agriculture & Food, Locked Bag 59, Narrabri, NSW 2390, Australia
| | - Dongmei Zhang
- Shanghai Academy of Landscape Architecture Science and Planning, Shanghai 200232, China
| | - Lijun Tian
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
| | - Adam White
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
| | - Pushkar Shrestha
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
| | - Xue-Rong Zhou
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
| | - Danny Llewellyn
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
| | - Allan Green
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
| | - Surinder P Singh
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
| | - Qing Liu
- CSIRO Agriculture & Food, Clunies Ross Street, Black Mountain, ACT 2601, Australia
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Shang X, Zhu L, Duan Y, Guo W. A cotton α1,3-/4-fucosyltransferase-encoding gene, FucT4, plays an important role in cell elongation and is significantly associated with fiber quality. Mol Genet Genomics 2020; 295:1141-1153. [PMID: 32462532 DOI: 10.1007/s00438-020-01687-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 05/11/2020] [Indexed: 11/25/2022]
Abstract
Fucosylation, one of the key posttranslational modifications, plays an important role in plants. It is involved in the development, signal transduction, reproduction, and disease resistance. α1,3-/4-Fucosyltransferase is responsible for transferring L-fucose from GDP-L-fucose to the N-glycan to exert fucosylational functions. However, the roles of the fucosyltransferase gene in cotton remain unknown. This study provided a comprehensive investigation of its possible functions. A genome-wide analysis identified four, four, eight, and eight FucT genes presented in the four sequenced cotton species, diploid Gossypium raimondii, G. arboreum, tetraploid G. hirsutum acc. TM-1, and G. barbadense cv. H7124, respectively. These FucTs were classified into two groups, with FucT4 homologs alone as a group. We isolated FucT4 in TM-1 and H7124, and named it GhFucT4 and GbFucT4, respectively. Quantitative RT-PCR and transcriptome data demonstrated that GhFucT4 had the highest expression levels in fibers among all GhFucT genes. Association studies and QTL co-localization supported the possible involvement of GhFucT4 in cotton fiber development. GhFucT4 and GbFucT4 shared high sequence identities, and FucT4 had higher expression in H7124 fiber tissues compared with TM-1. Furthermore, ectopic expression of FucT4 in transgenic Arabidopsis promoted root cell elongation, upregulated expression of genes related to cell wall loosening, and led to longer primary root. These results collectively indicate that FucT4 plays an important role in promoting cell elongation and modulating fiber development, which could be utilized to improve fiber quality traits in cotton breeding.
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Affiliation(s)
- Xiaoguang Shang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Hybrid Cotton R & D Engineering Research Center, Ministry of Education, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lijie Zhu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Hybrid Cotton R & D Engineering Research Center, Ministry of Education, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yujia Duan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Hybrid Cotton R & D Engineering Research Center, Ministry of Education, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wangzhen Guo
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Hybrid Cotton R & D Engineering Research Center, Ministry of Education, Nanjing Agricultural University, Nanjing, 210095, China.
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Gao X, Guo H, Zhang Q, Guo H, Zhang L, Zhang C, Gou Z, Liu Y, Wei J, Chen A, Chu Z, Zeng F. Arbuscular mycorrhizal fungi (AMF) enhanced the growth, yield, fiber quality and phosphorus regulation in upland cotton (Gossypium hirsutum L.). Sci Rep 2020; 10:2084. [PMID: 32034269 PMCID: PMC7005850 DOI: 10.1038/s41598-020-59180-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 01/21/2020] [Indexed: 11/23/2022] Open
Abstract
We previously reported on the strong symbiosis of AMF species (Rhizophagus irregularis CD1) with the cotton (Gossypium hirsutum L.) which is grown worldwide. In current study, it was thus investigated in farmland to determine the biological control effect of AMF on phosphorus acquisition and related gene expression regulation, plant growth and development, and a series of agronomic traits associated with yield and fiber quality in cotton. When AMF and cotton were symbiotic, the expression of the specific phosphate transporter family genes and P concentration in the cotton biomass were significantly enhanced. The photosynthesis, growth, boll number per plant and the maturity of the fiber were increased through the symbiosis between cotton and AMF. Statistical analysis showed a highly significant increase in yield for inoculated plots compared with that from the non inoculated controls, with an increase percentage of 28.54%. These findings clearly demonstrate here the benefits of AMF-based inoculation on phosphorus acquisition, growth, seed cotton yield and fiber quality in cotton. Further improvement of these beneficial inoculants on crops will help increase farmers' income all over the world both now and in the future.
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Affiliation(s)
- Xinpeng Gao
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China
- Novogene Bioinformatics Institute, Beijing, 100083, P. R. China
| | - Huihui Guo
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China
| | - Qiang Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China
| | - Haixia Guo
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China
| | - Li Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China
| | - Changyu Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China
| | - Zhongyuan Gou
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China
| | - Yan Liu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China
| | - Junmei Wei
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China
| | - Aiyun Chen
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China
| | - Zhaohui Chu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China.
| | - Fanchang Zeng
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, P. R. China.
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Zhang S, Jia T, Zhang Z, Zou X, Fan S, Lei K, Jiang X, Niu D, Yuan Y, Shang H. Insight into the relationship between S-lignin and fiber quality based on multiple research methods. Plant Physiol Biochem 2020; 147:251-261. [PMID: 31884241 DOI: 10.1016/j.plaphy.2019.12.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 11/18/2019] [Accepted: 12/20/2019] [Indexed: 06/10/2023]
Abstract
Cotton (Gossypium hirsutum) is an important cash crop, providing people with high quality natural fiber. Lignin is the main component of cotton fiber, second only to cellulose. As a main substance filled in the cellulose framework during the secondary wall thickening process, lignin plays a key role in the formation of cotton fiber quality. However, the mechanism behind it is still unclear. In this research, we screened candidate genes involved in lignin biosynthesis based on analysis of cotton genome and transcriptome sequence data. The authenticity of the transcriptome data was verified by qRT-PCR assay. Total 62 genes were identified from nine gene families. In the process, we found the key gene GhCAD7 that affects the biosynthesis of S-lignin and the ratio of syringyl/guaiacyl (S/G). In addition, in combination with the metabolites and transcriptome profiles of the line 0-153 with high fiber quality and the line sGK9708 with low fiber quality during cotton fiber development, we speculate that the ratio of syringyl/guaiacyl (S/G) is inseparable from the quality of cotton fiber. Finally, the S-type lignin synthesis branch may play a more important role in the formation of high-quality fiber. This work provides insights into the synthesis of lignin in cotton and lays the foundation for future research into improving fiber quality.
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Affiliation(s)
- Shuya Zhang
- State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Tingting Jia
- State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Zhen Zhang
- State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Xianyan Zou
- State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Senmiao Fan
- State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Kang Lei
- State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Xiao Jiang
- State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Doudou Niu
- State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Youlu Yuan
- State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China; School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.
| | - Haihong Shang
- State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China; School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.
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6
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Shen C, Wang N, Huang C, Wang M, Zhang X, Lin Z. Population genomics reveals a fine-scale recombination landscape for genetic improvement of cotton. Plant J 2019; 99:494-505. [PMID: 31002209 DOI: 10.1111/tpj.14339] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 03/17/2019] [Accepted: 04/01/2019] [Indexed: 05/28/2023]
Abstract
Recombination breaks up ancestral linkage disequilibrium, creates combinations of alleles, affects the efficiency of natural selection, and plays a major role in crop domestication and improvement. However, there is little knowledge regarding the variation in the population-scaled recombination rate in cotton. We constructed recombination maps and characterized the difference in the genomic landscape of the population-scaled recombination rate between Gossypium hirsutum and G. arboreum and sub-genomes based on the 381 sequenced G. hirsutum and 215 G. arboreum accessions. Comparative genomics identified large structural variations and syntenic genes in the recombination regions, suggesting that recombination was related to structural variation and occurred preferentially in the distal chromosomal regions. Correlation analysis indicated that recombination was only slightly affected by geographical distribution and breeding period. A genome-wide association study (GWAS) was performed with 15 agronomic traits using 267 cotton accessions and identified 163 quantitative trait loci (QTL) and an important candidate gene (Ghir_COL2) for early maturity traits. Comparative analysis of recombination and a GWAS revealed that the QTL of fibre quality traits tended to be more common in high-recombination regions than were those of yield and early maturity traits. These results provide insights into the population-scaled recombination landscape, suggesting that recombination contributed to the domestication and improvement of cotton, which provides a useful reference for studying recombination in other species.
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Affiliation(s)
- Chao Shen
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Nian Wang
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Cong Huang
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Maojun Wang
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Xianlong Zhang
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Zhongxu Lin
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
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Thyssen GN, Jenkins JN, McCarty JC, Zeng L, Campbell BT, Delhom CD, Islam MS, Li P, Jones DC, Condon BD, Fang DD. Whole genome sequencing of a MAGIC population identified genomic loci and candidate genes for major fiber quality traits in upland cotton (Gossypium hirsutum L.). Theor Appl Genet 2019; 132:989-999. [PMID: 30506522 DOI: 10.1007/s00122-018-3254-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 11/27/2018] [Indexed: 05/25/2023]
Abstract
Significant associations between candidate genes and six major cotton fiber quality traits were identified in a MAGIC population using GWAS and whole genome sequencing. Upland cotton (Gossypium hirsutum L.) is the world's major renewable source of fibers for textiles. To identify causative genetic variants that influence the major agronomic measures of cotton fiber quality, which are used to set discount or premium prices on each bale of cotton in the USA, we measured six fiber phenotypes from twelve environments, across three locations and 7 years. Our 550 recombinant inbred lines were derived from a multi-parent advanced generation intercross population and were whole-genome-sequenced at 3× coverage, along with the eleven parental cultivars at 20× coverage. The segregation of 473,517 single nucleotide polymorphisms (SNPs) in this population, including 7506 non-synonymous mutations, was combined with phenotypic data to identify seven highly significant fiber quality loci. At these loci, we found fourteen genes with non-synonymous SNPs. Among these loci, some had simple additive effects, while others were only important in a subset of the population. We observed additive effects for elongation and micronaire, when the three most significant loci for each trait were examined. In an informative subset where the major multi-trait locus on chromosome A07:72-Mb was fixed, we unmasked the identity of another significant fiber strength locus in gene Gh_D13G1792 on chromosome D13. The micronaire phenotype only revealed one highly significant genetic locus at one environmental location, demonstrating a significant genetic by environment component. These loci and candidate causative variant alleles will be useful to cotton breeders for marker-assisted selection with minimal linkage drag and potential biotechnological applications.
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Affiliation(s)
- Gregory N Thyssen
- Cotton Fiber Bioscience Research Unit, USDA-ARS-SRRC, New Orleans, LA, 70124, USA
- Cotton Chemistry and Utilization Unit, USDA-ARS-SRRC, New Orleans, LA, 70124, USA
| | - Johnie N Jenkins
- Genetics and Sustainable Agriculture Research Unit, USDA-ARS, Mississippi State, MS, 39762, USA
| | - Jack C McCarty
- Genetics and Sustainable Agriculture Research Unit, USDA-ARS, Mississippi State, MS, 39762, USA
| | - Linghe Zeng
- Crop Genetics Research Unit, USDA-ARS, Stoneville, MS, 38776, USA
| | - B Todd Campbell
- Coastal Plain Soil, Water and Plant Conservation Research Unit, USDA-ARS, Florence, SC, 29501, USA
| | - Christopher D Delhom
- Cotton Structure and Quality Research Unit, USDA-ARS-SRRC, New Orleans, LA, 70124, USA
| | - Md Sariful Islam
- Sugarcane Production Research Unit, USDA-ARS, Canal Point, FL, 33438, USA
| | - Ping Li
- Cotton Fiber Bioscience Research Unit, USDA-ARS-SRRC, New Orleans, LA, 70124, USA
| | | | - Brian D Condon
- Cotton Chemistry and Utilization Unit, USDA-ARS-SRRC, New Orleans, LA, 70124, USA
| | - David D Fang
- Cotton Fiber Bioscience Research Unit, USDA-ARS-SRRC, New Orleans, LA, 70124, USA.
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8
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Ma X, Wang X, Yin X, Kan X, Wang Z. Electrochemical stripping of cotton fabrics dyed with Reactive Black 5 in water and wastewater. Chemosphere 2018; 206:17-25. [PMID: 29723748 DOI: 10.1016/j.chemosphere.2018.04.122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/08/2018] [Accepted: 04/19/2018] [Indexed: 06/08/2023]
Abstract
Cotton fabrics dyed with Reactive Black 5 (RB5) was electrochemically stripped using Ti/TiO2-RuO2-IrO2 anode in water, pyridine and phenol solution. The results showed that RB5 dye could be easily stripped from the surface of cotton fabrics through the cleavage of chromophoric group (NN) under the attack of hydroxyl radicals (OH) and active chlorines generated in situ. Efficient stripping performance could be obtained in water and pyridine solution, whilst the stripping percent was not obviously affected by pyridine concentration and layers of dyed cotton fabrics. Whereas, phenol existing in water slowed the stripping rate due to the competition between the stripping of RB5 dye and the degradation of phenol. In the case of multi-layer dyed cotton fabrics, the stripping performance of the inner layer is superior to that of the outer layer owing to that the cotton fabrics hinder the diffusion of active chlorines and OH. The FTIR analysis of stripped cotton fabrics showed that the effect of electrochemical process and the existence of pollutant in water on the stripped cotton fabrics could be negligible. Electrochemical oxidation could also successfully strip various dyes from waste cotton fabrics in the investigated stripping solutions. Therefore, electrochemical oxidation provides an environmentally friendly alternative for color stripping of dyed cotton fabrics. The removal of dye from cotton fabrics and the degradation of pollutant in water could occur simultaneously, implying that wastewater containing chloride ions may replace the fresh water as stripping solution.
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Affiliation(s)
- Xiangjuan Ma
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
| | - Xin Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Xiaolin Yin
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Xiangru Kan
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Zeyuan Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
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9
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Diouf L, Magwanga RO, Gong W, He S, Pan Z, Jia YH, Kirungu JN, Du X. QTL Mapping of Fiber Quality and Yield-Related Traits in an Intra-Specific Upland Cotton Using Genotype by Sequencing (GBS). Int J Mol Sci 2018; 19:E441. [PMID: 29389902 PMCID: PMC5855663 DOI: 10.3390/ijms19020441] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/12/2018] [Accepted: 01/28/2018] [Indexed: 01/04/2023] Open
Abstract
Fiber quality and yield improvement are crucial for cotton domestication and breeding. With the transformation in spinning techniques and multiplicity needs, the development of cotton fiber quality and yield is of great importance. A genetic map of 5178 Single Nucleotide Polymorphism (SNP) markers were generated using 277 F2:3 population, from an intra-specific cross between two upland cotton accessions, CCRI35 a high fiber quality as female and Nan Dan Ba Di Da Hua (NH), with good yield properties as male parent. The map spanned 4768.098 cM with an average distance of 0.92 cM. A total of 110 Quantitative Traits Loci (QTLs) were identified for 11 traits, but only 30 QTLs were consistent in at least two environments. The highest percentage of phenotypic variance explained by a single QTL was 15.45%. Two major cluster regions were found, cluster 1 (chromosome17-D03) and cluster 2 (chromosome26-D12). Five candidate genes were identified in the two QTL cluster regions. Based on GO functional annotation, all the genes were highly correlated with fiber development, with functions such as protein kinase and phosphorylation. The five genes were associated with various fiber traits as follows: Gh_D03G0889 linked to qFM-D03_cb, Gh_D12G0093, Gh_D12G0410, Gh_D12G0435 associated with qFS-D12_cb and Gh_D12G0969 linked to qFY-D12_cb. Further structural annotation and fine mapping is needed to determine the specific role played by the five identified genes in fiber quality and yield related pathway.
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Affiliation(s)
- Latyr Diouf
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
- Senegalese River Valley Development Agency (SAED), Saint-Louis Bp74, Senegal.
| | - Richard Odongo Magwanga
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
- School of Physical and Biological Sciences (SPBS), Jaramogi Oginga Odinga University of Science and Technology (JOOUST), Main Campus, P.O. Box 210-40601, Bondo, Kenya.
| | - Wenfang Gong
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
| | - Shoupu He
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
| | - Zhaoe Pan
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
| | - Yin Hua Jia
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
| | - Joy Nyangasi Kirungu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
| | - Xiongming Du
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
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10
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Yang JS, Hu W, Zhao W, Meng Y, Chen B, Wang Y, Zhou Z. Soil Potassium Deficiency Reduces Cotton Fiber Strength by Accelerating and Shortening Fiber Development. Sci Rep 2016; 6:28856. [PMID: 27350236 PMCID: PMC4924092 DOI: 10.1038/srep28856] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 06/10/2016] [Indexed: 11/24/2022] Open
Abstract
Low potassium (K)-induced premature senescence in cotton has been observed worldwide, but how it affects cotton fiber properties remain unclear. We hypothesized that K deficiency affects cotton fiber properties by causing disordered fiber development, which may in turn be caused by the induction of a carbohydrate acquisition difficulty. To investigate this issue, we employed a low-K-sensitive cotton cultivar Siza 3 and a low-K-tolerant cultivar Simian 3 and planted them in three regions of different K supply. Data concerning lint yield, Pn and main fiber properties were collected from three years of testing. Soil K deficiency significantly accelerated fiber cellulose accumulation and dehydration processes, which, together with previous findings, suggests that the low-K induced carbohydrate acquisition difficulty could cause disordered fiber development by stimulating the expression of functional proteins such as CDKA (cyclin-dependent kinase). As a result, fiber strength and lint weight were reduced by up to 7.8% and 2.1%, respectively. Additional quantitative analysis revealed that the degree of accelerated fiber development negatively correlated with fiber strength. According to the results of this study, it is feasible to address the effects of soil K deficiency on fiber properties using existing cultivation strategies to prevent premature senescence of cotton plants.
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Affiliation(s)
- Jia-Shuo Yang
- Key Laboratory of Crop Physiology & Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Wei Hu
- Key Laboratory of Crop Physiology & Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Wenqing Zhao
- Key Laboratory of Crop Physiology & Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Yali Meng
- Key Laboratory of Crop Physiology & Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Binglin Chen
- Key Laboratory of Crop Physiology & Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Youhua Wang
- Key Laboratory of Crop Physiology & Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Zhiguo Zhou
- Key Laboratory of Crop Physiology & Ecology, Department of Agronomy, College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
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11
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Feng H, Guo L, Wang G, Sun J, Pan Z, He S, Zhu H, Sun J, Du X. The Negative Correlation between Fiber Color and Quality Traits Revealed by QTL Analysis. PLoS One 2015; 10:e0129490. [PMID: 26121363 PMCID: PMC4485895 DOI: 10.1371/journal.pone.0129490] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 05/09/2015] [Indexed: 11/18/2022] Open
Abstract
Naturally existing colored cotton was far from perfection due to having genetic factors for lower yield, poor fiber quality and monotonous color. These factors posed a challenge to colored cotton breeding and innovation. To identify novel quantitative trait loci (QTL) for fiber color along with understanding of correlation between fiber color and quality in colored cotton, a RIL and two F2 populations were generated from crosses among Zong128 (Brown fiber cotton) and two white fiber cotton lines which were then analyzed in four environments. Two stable and major QTLs (qLC-7-1, qFC-7-1) for fiber lint and fuzz color were detected accounting for 16.01%-59.85% of the phenotypic variation across multiple generations and environments. Meanwhile, some minor QTLs were also identified on chromosomes 5, 14, 21 and 24 providing low phenotypic variation (<5%) from only F2 populations, not from the RILs population. Especially, a multiple-effect locus for fiber color and quality has been detected between flanking markers NAU1043 and NAU3654 on chromosome 7 (A genome) over multiple environments. Of which, qLC-7-1, qFC-7-1 were responsible for positive effects and improved fiber color in offsprings. Meanwhile, the QTLs (qFL-7-1, qFU-7-1, qFF-7-1, qFE-7-1, and qFS-7-1) for fiber quality had negative effects and explained 2.19%-8.78% of the phenotypic variation. This multiple-effect locus for fiber color and quality may reveal the negative correlation between the two types of above traits, so paving the way towards cotton genetic improvement.
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Affiliation(s)
- Hongjie Feng
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang, China
- College of Agriculture, The key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi, China
| | - Lixue Guo
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang, China
- College of Agriculture, The key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi, China
| | - Gaskin Wang
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang, China
| | - Junling Sun
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang, China
| | - Zhaoe Pan
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang, China
| | - Shoupu He
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang, China
| | - Heqin Zhu
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang, China
| | - Jie Sun
- College of Agriculture, The key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi, China
| | - Xiongming Du
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang, China
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12
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Qin H, Chen M, Yi X, Bie S, Zhang C, Zhang Y, Lan J, Meng Y, Yuan Y, Jiao C. Identification of associated SSR markers for yield component and fiber quality traits based on frame map and Upland cotton collections. PLoS One 2015; 10:e0118073. [PMID: 25635680 PMCID: PMC4311988 DOI: 10.1371/journal.pone.0118073] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 01/04/2015] [Indexed: 11/19/2022] Open
Abstract
Detecting QTLs (quantitative trait loci) that enhance cotton yield and fiber quality traits and accelerate breeding has been the focus of many cotton breeders. In the present study, 359 SSR (simple sequence repeat) markers were used for the association mapping of 241 Upland cotton collections. A total of 333 markers, representing 733 polymorphic loci, were detected. The average linkage disequilibrium (LD) decay distances were 8.58 cM (r2 > 0.1) and 5.76 cM (r2 > 0.2). 241 collections were arranged into two subgroups using STRUCTURE software. Mixed linear modeling (MLM) methods (with population structure (Q) and relative kinship matrix (K)) were applied to analyze four phenotypic datasets obtained from four environments (two different locations and two years). Forty-six markers associated with the number of bolls per plant (NB), boll weight (BW), lint percentage (LP), fiber length (FL), fiber strength (FS) and fiber micornaire value (FM) were repeatedly detected in at least two environments. Of 46 associated markers, 32 were identified as new association markers, and 14 had been previously reported in the literature. Nine association markers were near QTLs (at a distance of less than 1-2 LD decay on the reference map) that had been previously described. These results provide new useful markers for marker-assisted selection in breeding programs and new insights for understanding the genetic basis of Upland cotton yields and fiber quality traits at the whole-genome level.
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Affiliation(s)
- Hongde Qin
- Institute of Cash Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Cotton Biology and Breeding in the Middle Reaches of the Changjiang River (Wuhan), Ministry of Agriculture, Wuhan, P. R. China
| | - Min Chen
- Key Laboratory of Cotton Biology and Breeding in the Middle Reaches of the Changjiang River (Wuhan), Ministry of Agriculture, Wuhan, P. R. China
| | - Xianda Yi
- Institute of Cash Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Cotton Biology and Breeding in the Middle Reaches of the Changjiang River (Wuhan), Ministry of Agriculture, Wuhan, P. R. China
| | - Shu Bie
- Institute of Cash Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Cotton Biology and Breeding in the Middle Reaches of the Changjiang River (Wuhan), Ministry of Agriculture, Wuhan, P. R. China
| | - Cheng Zhang
- Institute of Cash Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Cotton Biology and Breeding in the Middle Reaches of the Changjiang River (Wuhan), Ministry of Agriculture, Wuhan, P. R. China
| | - Youchang Zhang
- Institute of Cash Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Cotton Biology and Breeding in the Middle Reaches of the Changjiang River (Wuhan), Ministry of Agriculture, Wuhan, P. R. China
| | - Jiayang Lan
- Institute of Cash Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Cotton Biology and Breeding in the Middle Reaches of the Changjiang River (Wuhan), Ministry of Agriculture, Wuhan, P. R. China
| | - Yanyan Meng
- Institute of Cash Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
- Key Laboratory of Cotton Biology and Breeding in the Middle Reaches of the Changjiang River (Wuhan), Ministry of Agriculture, Wuhan, P. R. China
| | - Youlu Yuan
- Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyan, China
| | - Chunhai Jiao
- Hubei Academy of Agricultural Sciences, Wuhan, China
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13
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Bai WQ, Xiao YH, Zhao J, Song SQ, Hu L, Zeng JY, Li XB, Hou L, Luo M, Li DM, Pei Y. Gibberellin overproduction promotes sucrose synthase expression and secondary cell wall deposition in cotton fibers. PLoS One 2014; 9:e96537. [PMID: 24816840 PMCID: PMC4015984 DOI: 10.1371/journal.pone.0096537] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 04/08/2014] [Indexed: 12/15/2022] Open
Abstract
Bioactive gibberellins (GAs) comprise an important class of natural plant growth regulators and play essential roles in cotton fiber development. To date, the molecular base of GAs' functions in fiber development is largely unclear. To address this question, the endogenous bioactive GA levels in cotton developing fibers were elevated by specifically up-regulating GA 20-oxidase and suppressing GA 2-oxidase via transgenic methods. Higher GA levels in transgenic cotton fibers significantly increased micronaire values, 1000-fiber weight, cell wall thickness and cellulose contents of mature fibers. Quantitative RT-PCR and biochemical analysis revealed that the transcription of sucrose synthase gene GhSusA1 and sucrose synthase activities were significantly enhanced in GA overproducing transgenic fibers, compared to the wild-type cotton. In addition, exogenous application of bioactive GA could promote GhSusA1 expression in cultured fibers, as well as in cotton hypocotyls. Our results suggested that bioactive GAs promoted secondary cell wall deposition in cotton fibers by enhancing sucrose synthase expression.
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Affiliation(s)
- Wen-Qin Bai
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
| | - Yue-Hua Xiao
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
| | - Juan Zhao
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
| | - Shui-Qing Song
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
| | - Lin Hu
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
| | - Jian-Yan Zeng
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
| | - Xian-Bi Li
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
| | - Lei Hou
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
| | - Ming Luo
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
| | - De-Mou Li
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
| | - Yan Pei
- Biotechnology Research Center, Southwest University, Beibei, Chongqing, China
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14
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Patel JD, Wright RJ, Auld D, Chandnani R, Goff VH, Ingles J, Pierce GJ, Torres MJ, Paterson AH. Alleles conferring improved fiber quality from EMS mutagenesis of elite cotton genotypes. Theor Appl Genet 2014; 127:821-830. [PMID: 24374351 DOI: 10.1007/s00122-013-2259-6] [Citation(s) in RCA: 3] [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] [Received: 06/29/2013] [Accepted: 12/14/2013] [Indexed: 06/03/2023]
Abstract
Genetic improvements for many fiber traits are obtained by mutagenesis of elite cottons, mitigating genetic uniformity in this inbred polyploid by contributing novel alleles important to ongoing crop improvement. The elite gene pool of cotton (Gossypium spp.) has less diversity than those of most other major crops, making identification of novel alleles important to ongoing crop improvement. A total of 3,164 M5 lines resulting from ethyl methanesulfonate (EMS) mutagenesis of two G. hirsutum breeding lines, TAM 94L-25 and Acala 1517-99, were characterized for basic components of fiber quality and selected yield components. Across all measured traits, the ranges of phenotypic values among the mutant lines were consistently larger than could be explained by chance (5.27-10.1 for TAM 94 L-25 and 5.29-7.94 standard deviations for Acala 1517-99-derived lines). Multi-year replicated studies confirmed a genetic basis for these differences, showing significant correlations between lines across years and environments. A subset of 157 lines selected for superior fiber qualities, including fiber elongation (22 lines), length (22), lint percent (17), fineness (23), Rd value (21), strength (19), uniformity (21) and multiple attributes in a selection index (26) were compared to 55 control lines in replicated trials in both Texas and Georgia. For all traits, mutant lines showing substantial and statistically significant improvements over control lines were found, in most cases from each of the two genetic backgrounds. This indicates that genetic improvements for a wide range of fiber traits may be obtained from mutagenesis of elite cottons. Indeed, lines selected for one fiber trait sometimes conferred additional attributes, suggesting pleiotropic effects of some mutations and offering multiple benefits for the incorporation of some alleles into mainstream breeding programs.
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Affiliation(s)
- Jinesh D Patel
- Plant Genome Mapping Laboratory, University of Georgia, Athens, GA, 30602, USA
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15
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Palle SR, Campbell LM, Pandeya D, Puckhaber L, Tollack LK, Marcel S, Sundaram S, Stipanovic RD, Wedegaertner TC, Hinze L, Rathore KS. RNAi-mediated Ultra-low gossypol cottonseed trait: performance of transgenic lines under field conditions. Plant Biotechnol J 2013; 11:296-304. [PMID: 23078138 DOI: 10.1111/pbi.12013] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 09/19/2012] [Accepted: 09/20/2012] [Indexed: 05/06/2023]
Abstract
Cottonseed remains a low-value by-product of lint production mainly due to the presence of toxic gossypol that makes it unfit for monogastrics. Ultra-low gossypol cottonseed (ULGCS) lines were developed using RNAi knockdown of δ-cadinene synthase gene(s) in Gossypium hirsutum. The purpose of the current study was to assess the stability and specificity of the ULGCS trait and evaluate the agronomic performance of the transgenic lines. Trials conducted over a period of 3 years show that the ULGCS trait was stable under field conditions and the foliage/floral organs of transgenic lines contained wild-type levels of gossypol and related terpenoids. Although it was a relatively small-scale study, we did not observe any negative effects on either the yield or quality of the fibre and seed in the transgenic lines compared with the nontransgenic parental plants. Compositional analysis was performed on the seeds obtained from plants grown in the field during 2009. As expected, the major difference between the ULGCS and wild-type cottonseeds was in terms of their gossypol levels. With the exception of oil content, the composition of ULGCS was similar to that of nontransgenic cottonseeds. Interestingly, the ULGCS had significantly higher (4%-8%) oil content compared with the seeds from the nontransgenic parent. Field trial results confirmed the stability and specificity of the ULGCS trait suggesting that this RNAi-based product has the potential to be commercially viable. Thus, it may be possible to enhance and expand the nutritional utility of the annual cottonseed output to fulfil the ever-increasing needs of humanity.
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Affiliation(s)
- Sreenath R Palle
- Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, TX, USA
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16
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Singh D, Gill JS, Gumber RK, Singh R, Singh S. Yield and fibre quality associated with cotton leaf curl disease of Bt-cotton in Punjab. J Environ Biol 2013; 34:113-116. [PMID: 24006816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Cotton leaf curl disease (CLCuD), caused by Gemini virus and transmitted through whitefly (Bemisia tabaci) is a serious problem in Northern India, affecting the productivity to a great extent. Depending upon the severity of infection in susceptible varieties, the disease can cause upto 90.0 % yield losses besides this, it also causes deterioration in fibre quality. The objective of the present study was to determine the effect of cotton leaf curl disease on seed cotton yield and fibre characters of two popular Bt-cotton hybrids in Punjab. The disease caused 52.7% reduction in number of bolls and 54.2 % in boll weight in Bt cotton hybrid RCH 134. Similarly, it reduced the fibre length from 29.1 to 26.2 mm (9.9%); fibre uniformity from 68.9 to 68.1% (1.1%); fibre strength from 29.1 to 26.9 g per texture (7.5%) and miconaire value from 5.2 to 5.0 g inch(-1) (3.8%). Similar results were reported in Bt cotton hybrid MRC 6304, where the disease reduced the boll number and boll weight by 46.1 and 43.4%, respectively. However, to the fibre quality was not much affected by varying level of disease severity. The studies clearly reflect the adverse impact of CLCuD on yield and fibre quality especially 2.5% span length. Thus suggesting the management of disease using integrated disease management strategies to avoid quantitative and qualitative losses.
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Affiliation(s)
- Daljeet Singh
- Punjab Agricultural University, Regional Station, Faridkot-151 203, India.
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17
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Bedek G, Salaün F, Martinkovska Z, Devaux E, Dupont D. Evaluation of thermal and moisture management properties on knitted fabrics and comparison with a physiological model in warm conditions. Appl Ergon 2011; 42:792-800. [PMID: 21277564 DOI: 10.1016/j.apergo.2011.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Revised: 10/27/2010] [Accepted: 01/04/2011] [Indexed: 05/30/2023]
Abstract
This study reports on an experimental investigation of physical properties on the textile thermal comfort. Textile properties, such as thickness, relative porosity, air permeability, moisture regain, thermal conductivity, drying time and water-vapour transmission rate have been considered and correlated to the thermal and vapour resistance, permeability index, thermal effusivity and moisture management capability in order to determine the overall comfort performance of underwear fabrics. The results suggested that the fibre type, together with moisture regain and knitted structure characteristics appeared to affect some comfort-related properties of the fabrics. Additionally, thermal sensations, temperature and skin wetness predicted by Caseto® software for three distinct activity levels were investigated. Results show that the data obtained from this model in transient state are correlated to the thermal conductivity for the temperature and to Ret, moisture regain and drying time for the skin wetness. This provides potential information to determine the end uses of these fabrics according to the selected activity level.
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18
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Blinka EL, Herbert A, Malone S, Van Duyn JW, Roberts P, Bradley JR, Bacheler JS. Relationship between external stink bug (Hemiptera: Pentatomidae) boll-feeding symptoms and internal boll damage with respect to cotton lint gin-out and fiber quality. J Econ Entomol 2010; 103:2236-2241. [PMID: 21309249 DOI: 10.1603/ec10122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Cotton, Gossypium hirsutum L., bolls from 17 field locations in northeastern North Carolina and southeastern Virginia, having 20% or greater internal boll damage, were studied to determine the relationship between external feeding symptoms and internal damage caused by stink bug (Hemiptera: Pentatomidae) feeding. In 2006 and 2007, two cohorts of 100 bolls each were sampled at all field locations. The first cohort was removed as bolls reached approximately quarter size in diameter (2.4 cm). External and internal symptoms of stink bug feeding were assessed and tabulated. Concurrent to when the first cohort was collected, a second cohort of quarter-size-diameter bolls was identified, tagged, examined in situ for external feeding symptoms (sunken lesions), and harvested at the black seed coat stage. Harvested bolls were assessed for internal damage and locks were categorized (undamaged, minor damage, or major damage), dried, and ginned. Lint samples from each damage category were submitted for high volume instrument and advanced fiber information system quality analyses. Significant, moderately strong Pearson correlation coefficients existed between number of external stink bug feeding lesions and internal damage. Pearson correlation of total external lesions with total internal damage was stronger than any correlation among the other single components compared. Predictability plots indicated a rapid increase in relationship strength when relating external stink bug lesions to internal damage as the number of external lesions increased. Approximately 90% predictability of internal damage was achieved with four (2006) or six (2007) external lesions per boll. Gin-turnout and fiber quality decreased with increasing intensity of internal stink bug damage.
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Affiliation(s)
- Eric L Blinka
- Technology Development, Monsanto, 5030 Millsfield Hgwy., Dyersburg, TN 38024, USA.
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19
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Lacape JM, Llewellyn D, Jacobs J, Arioli T, Becker D, Calhoun S, Al-Ghazi Y, Liu S, Palaï O, Georges S, Giband M, de Assunção H, Barroso PAV, Claverie M, Gawryziak G, Jean J, Vialle M, Viot C. Meta-analysis of cotton fiber quality QTLs across diverse environments in a Gossypium hirsutum x G. barbadense RIL population. BMC Plant Biol 2010; 10:132. [PMID: 20584292 PMCID: PMC3017793 DOI: 10.1186/1471-2229-10-132] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Accepted: 06/28/2010] [Indexed: 05/18/2023]
Abstract
BACKGROUND Cotton fibers (produced by Gossypium species) are the premier natural fibers for textile production. The two tetraploid species, G. barbadense (Gb) and G. hirsutum (Gh), differ significantly in their fiber properties, the former having much longer, finer and stronger fibers that are highly prized. A better understanding of the genetics and underlying biological causes of these differences will aid further improvement of cotton quality through breeding and biotechnology. We evaluated an inter-specific Gh x Gb recombinant inbred line (RIL) population for fiber characteristics in 11 independent experiments under field and glasshouse conditions. Sites were located on 4 continents and 5 countries and some locations were analyzed over multiple years. RESULTS The RIL population displayed a large variability for all major fiber traits. QTL analyses were performed on a per-site basis by composite interval mapping. Among the 651 putative QTLs (LOD > 2), 167 had a LOD exceeding permutation based thresholds. Coincidence in QTL location across data sets was assessed for the fiber trait categories strength, elongation, length, length uniformity, fineness/maturity, and color. A meta-analysis of more than a thousand putative QTLs was conducted with MetaQTL software to integrate QTL data from the RIL and 3 backcross populations (from the same parents) and to compare them with the literature. Although the global level of congruence across experiments and populations was generally moderate, the QTL clustering was possible for 30 trait x chromosome combinations (5 traits in 19 different chromosomes) where an effective co-localization of unidirectional (similar sign of additivity) QTLs from at least 5 different data sets was observed. Most consistent meta-clusters were identified for fiber color on chromosomes c6, c8 and c25, fineness on c15, and fiber length on c3. CONCLUSIONS Meta-analysis provided a reliable means of integrating phenotypic and genetic mapping data across multiple populations and environments for complex fiber traits. The consistent chromosomal regions contributing to fiber quality traits constitute good candidates for the further dissection of the genetic and genomic factors underlying important fiber characteristics, and for marker-assisted selection.
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Affiliation(s)
- Jean-Marc Lacape
- UMR-DAP, CIRAD, Avenue Agropolis, 34398, Montpellier Cedex 5, France
| | - Danny Llewellyn
- CSIRO Plant Industry, P.O. Box 1600 Canberra, ACT, Australia
| | - John Jacobs
- Bayer BioScience N.V., Technologiepark 38, Ghent, Belgium
| | - Tony Arioli
- Bayer CropScience, BioScience research, Lubbock, TX, USA
| | - David Becker
- Bayer CropScience, BioScience research, Lubbock, TX, USA
| | - Steve Calhoun
- Bayer CropScience, BioScience research, Lubbock, TX, USA
| | - Yves Al-Ghazi
- CSIRO Plant Industry, P.O. Box 1600 Canberra, ACT, Australia
| | - Shiming Liu
- CSIRO Plant Industry, P.O. Box 1600 Canberra, ACT, Australia
| | - Oumarou Palaï
- IRAD, Centre Régional de Recherche Agricole de Maroua, BP 33 Maroua, Cameroon
| | - Sophie Georges
- IRAD, Centre Régional de Recherche Agricole de Maroua, BP 33 Maroua, Cameroon
- UPR-SCA, CIRAD, Avenue Agropolis, 34398, Montpellier Cedex 5, France
| | - Marc Giband
- UMR-DAP, CIRAD, Avenue Agropolis, 34398, Montpellier Cedex 5, France
- EMBRAPA Algodão, Rua Osvaldo Cruz 1143, Centenario, 58.428-095 Campina Grande, PB, Brazil
| | - Henrique de Assunção
- EMBRAPA Algodão, Rua Osvaldo Cruz 1143, Centenario, 58.428-095 Campina Grande, PB, Brazil
| | | | - Michel Claverie
- UMR-DAP, CIRAD, Avenue Agropolis, 34398, Montpellier Cedex 5, France
| | - Gérard Gawryziak
- UPR-SCA, CIRAD, Avenue Agropolis, 34398, Montpellier Cedex 5, France
| | - Janine Jean
- UPR-SCA, CIRAD, Avenue Agropolis, 34398, Montpellier Cedex 5, France
| | - Michèle Vialle
- UPR-SCA, CIRAD, Avenue Agropolis, 34398, Montpellier Cedex 5, France
| | - Christopher Viot
- UMR-DAP, CIRAD, Avenue Agropolis, 34398, Montpellier Cedex 5, France
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20
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Divya K, Jami SK, Kirti PB. Constitutive expression of mustard annexin, AnnBj1 enhances abiotic stress tolerance and fiber quality in cotton under stress. Plant Mol Biol 2010; 73:293-308. [PMID: 20148350 DOI: 10.1007/s11103-010-9615-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Accepted: 01/30/2010] [Indexed: 05/04/2023]
Abstract
Annexins belong to a multigene family of Ca(2+) dependent, phospholipid and cytoskeleton binding proteins. They have been shown to be upregulated under various stress conditions. We generated transgenic cotton plants expressing mustard annexin (AnnBj1), which showed enhanced tolerance towards different abiotic stress treatments like sodium chloride, mannitol, polyethylene glycol and hydrogen peroxide. The tolerance to these treatments was associated with decreased hydrogen peroxide levels and enhanced total peroxidase activity, enhanced content of osmoprotectants- proline and sucrose in transgenic plants. They showed higher retention of total chlorophyll and reduced TBARS in leaf disc assays with stress treatments, and decreased hydrogen peroxide accumulation in the stomatal guard cells when compared to their wild type counterparts. They also showed significantly enhanced fresh weight, relative water content, dry weight under stress. Treatment with sodium chloride resulted in enhanced expression of genes for Delta-pyrroline-5-carboxylase synthetase in leaves, and sucrose phosphate synthase, sucrose synthase and cellulose synthase A in the leaves and fibers of transgenic plants. The transgenic plants maintained normal seed development, fiber quality and cellulose content under stress.
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Affiliation(s)
- Kesanakurti Divya
- Department of Plant Sciences, University of Hyderabad, Hyderabad, India
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21
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She JM, Lu WZ. [XI Yuan-Ling]. Yi Chuan 2010; 32:409-410. [PMID: 20466626 DOI: 10.3724/sp.j.1005.2010.00409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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22
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Clark M. [Cotton. A small solution to the rescue for intestinal diseases]. Perspect Infirm 2009; 6:17. [PMID: 20120303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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23
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Abstract
The mean vibration transmissibility values were measured for cotton work gloves commonly used in vibration-generating workplaces to evaluate the vibration isolating performance of cotton work gloves. The mean vibration transmissibility values of work cotton gloves were compared with those of four types of anti-vibration gloves measured in the same way. All the measurements were performed based on the newly issued JIS T8114 that is identical to ISO10819. Also, linear transmissibility values were calculated from the measured data. Cotton work glove samples did not satisfy the requirements specified in JIS T8114. All the test samples showed mean vibration transmissibility values of more than 1.0 for spectra M and H. In contrast, all the anti-vibration gloves tested in this study satisfied the JIS T8114 requirements. The linear transmissibility values of cotton work gloves were consistently higher than those of anti-vibration gloves for spectrum H. The linear transmissibility values of cotton work gloves were steady at about 0.9 up to 200 Hz, then increased with vibration frequency to about 1.0 at 400 Hz. In contrast, the linear transmissibility values of anti-vibration gloves increased with frequency to 1.0 at 30 Hz and then decreased with small peaks at 100 Hz and 300 Hz. Our results suggest that cotton work gloves do not show enough vibration-isolating performance. Therefore, attention should be paid to encouraging the widespread use of anti-vibration gloves in place of cotton work gloves to reduce exposure to hand-arm vibration.
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Affiliation(s)
- Nobuyuki Shibata
- Department of Research Planning and Coordination, National Institute of Occupational Safety and Health, 6-21-1 Nagao, Tama-ku, Kawasaki 214-8585, Japan
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24
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Abney MR, Ruberson JR, Herzog GA, Kring TJ, Steinkraus DC, Roberts PM. Rise and fall of cotton aphid (Hemiptera: Aphididae) populations in southeastern cotton production systems. J Econ Entomol 2008; 101:23-35. [PMID: 18330112 DOI: 10.1603/0022-0493(2008)101[23:rafoca]2.0.co;2] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The impact of natural enemies on cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae), populations in cotton, Gossypium hirsutum L., production systems in the southeastern United States was evaluated over 3 yr in irrigated commercial cotton fields. Fungal epizootics caused by the entomopathogen Neozygites fresenii (Nowakowski) Batko reduced aphid numbers to subthreshold levels in 1999, 2000, and 2001 and occurred consistently in early to mid-July in all 3 yr. Scymnus spp. were the most abundant aphidophagous predators, although other coccinellid species and generalist predators such as spiders, fire ants, heteropterans, and neuropterans also were present. Studies using arthropod exclusion cages demonstrated little impact of predators or parasitoids on aphid populations before fungal epizootics. Arthropod natural enemies were most abundant after epizootics and may have suppressed aphid populations late in the season. Seed cotton yield, and lint quality were not affected by aphicide applications in any year of the study. Implications of these findings for aphid management in the southeastern United States are discussed.
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Affiliation(s)
- Mark R Abney
- Department of Entomology, North Carolina State University, Raleigh, NC, USA.
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25
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Abstract
The presence of cotton plant botanical components, or trash, embedded in lint subsequent to harvesting and ginning is an important criterion in the classification of baled cotton by the U.S. Department of Agriculture Agricultural Marketing Service. The trash particles may be reduced in size to the point that specific trash types are not identifiable by image or gravimetric analysis, and it is desirable to quantify different trash types so that processing lines may be optimized for removal of the most problematic trash to enhance processing performance and cotton lint quality. Currently, there are no methods available to adequately quantify cotton lint trash based on botanical origin. The present work attempts to address this issue through the analysis by fluorescence spectroscopy of dimethyl sulfoxide extracts of mixtures of six botanical trash types. The fluorescence data are subsequently subjected to chemometric analysis. The resulting 6 partial least-squares calibration models obtained from 128 mixtures are demonstrated in the case of leaf and hull to be capable of predicting individual trash component concentrations with a high degree of confidence.
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Affiliation(s)
- Gary R Gamble
- U.S. Department of Agriculture, Agricultural Research Service, Cotton Quality Research Station, Clemson, South Carolina 29633, USA.
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26
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Abstract
Viable microbial cells distributed in a 130 microim thick surface layer of cotton fabrics were stained with a fluorescent glucose, 2- [N- (7-nitrobenz-2-oxa-1,3-diazol-4-yl) amino] -2-deoxy-D-glucose (2-NBDG), and automatically mapped with an ultra-deep focusing range microscope (UDF) system. The software of the UDF system was upgraded and the number of Candida albicans cells could be counted at a higher precision than before. Bacterial cells of Pseudomonas fluorescens, Serratia marcescens, and Citrobacter freundii, which were smaller than 1-2 microm, were successfully mapped for the first time. These results indicate the practical importance of the present method in the evaluation of the antibacterial properties of fabrics and the efficacy of washing.
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Affiliation(s)
- Kohtaro Fujioka
- Kobe Technical Center, Procter & Gamble Far East, Inc., 17, Koyo-cho Naka 1-Chome, Higashinada-ku, Kobe 658-0032, Japan
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27
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Wang Q, Wang Z, Song X, Li Y, Guo Y, Wang J, Sun X. [Effects of shading at blossoming and boll-forming stages on cotton fiber quality]. Ying Yong Sheng Tai Xue Bao 2005; 16:1465-8. [PMID: 16262060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The study on the effects of different shading level at blossoming and boll-forming stages on cotton fiber quality of Zhongmiansuo No.41 and Lumianyan No. 18 showed that with increasing shading, the maximum fiber length of cotton decreased, while the elongation period increased. The fiber length in 70% shading treatment was 1.01 mm shorter than that in 40% shading treatment. Without shading, the fiber reached its maximum length 25 days after anthesis, while in shading treatments, the fiber reached its maximum length 35 days after anthesis. Fiber gauge tenacity was also decreased with increasing shading. Comparing with the control, both 40% and 70% shading significantly decreased the fiber maturation and maturity. Two test cotton varieties presented the same change trend under shading condition.
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Affiliation(s)
- Qingcai Wang
- College of Agronomy, Shandong Agricultural University, Tai'an 271018, China.
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28
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Lang N, Bromiker R, Arad I. The effect of wool vs. cotton head covering and length of stay with the mother following delivery on infant temperature. Int J Nurs Stud 2004; 41:843-6. [PMID: 15476757 DOI: 10.1016/j.ijnurstu.2004.03.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2003] [Revised: 03/15/2004] [Accepted: 03/16/2004] [Indexed: 11/16/2022]
Abstract
Rectal temperature of 126 term infants was measured on admission to the nursery following variable periods of stay with the mother in the delivery room. Fifty-nine infants who wore woolen hats after delivery had higher rectal temperature than 67 infants whose head was covered by loosely applied cotton diapers (36.5+/-0.5 degrees C vs. 36.3+/-0.5 degrees C, respectively; p=0.03). Among them there were fewer infants who were admitted with rectal temperature 36 degrees C (12 vs. 26, respectively; p=0.03). In multiple regression analyses accounting for head covering with woolen hats, birth weight, gender, delivery room temperature and length of stay with the mother, only birth weight and head covering with woolen hats were significantly associated with rectal temperature at arrival in the nursery (p=0.002 and 0.03, respectively), and only head covering with cotton diapers was significantly associated with rectal temperature 36 degrees C (p=0.03). Our data imply that covering heads of term newborns with simple woolen hats may reduce or prevent heat loss following delivery, and that adequate warming of infants is achieved during prolonged stay with the mother.
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Affiliation(s)
- N Lang
- Department of Neonatology, Hadassah University Hospital, Mt. Scopus, Jerusalem 91240, Israel
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29
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Li X, Wang XD, Zhao X, Dutt Y. Improvement of cotton fiber quality by transforming the acsA and acsB genes into Gossypium hirsutum L. by means of vacuum infiltration. Plant Cell Rep 2004; 22:691-7. [PMID: 14740167 DOI: 10.1007/s00299-003-0751-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2003] [Revised: 12/01/2003] [Accepted: 12/04/2003] [Indexed: 05/08/2023]
Abstract
A novel method for the genetic transformation of cotton pollen by means of vacuum infiltration and Agrobacterium-mediated transformation is reported. The acsA and acsB genes, which are involved in cellulose synthesis in Acetobacter xylinum, were transferred into pollen grains of brown cotton with the aim of improving its fiber quality by incorporating useful prokaryotic features into the colored cotton plants. Transformation was carried out in cotton pollen-germinating medium, and transformation was mediated by vector pCAMBIA1301, which contains a reporter gene beta-glucuronidase (GUS), a selectable marker gene, hpt, for hygromycin resistance and the genes of interest, acsA and acsB. The integration and expression of acsA, acsB and GUS in the genome of transgenic plants were analyzed with Southern blot hybridization, PCR, histochemical GUS assay and Northern blot hybridization. We found that following pollination on the cotton stigma transformed pollen retained its capability of double-fertilization and that normal cotton seeds were produced in the cotton ovary. Of 1,039 seeds from 312 bolls pollinated with transformed pollen grains, 17 were able to germinate and grow into seedlings for more than 3 weeks in a nutrient medium containing 50 mg/l hygromycin; eight of these were transgenic plants integrated with acsA and acsB, yielding a 0.77% transformation rate. Fiber strength and length from the most positive transformants was 15% greater than those of the control (non-transformed), a significant difference, as was cellulose content between the transformed and control plants. Our study suggests that transformation through vacuum infiltration and Agrobacterium mediated transformation can be an efficient way to introduce foreign genes into the cotton pollen grain and that cotton fiber quality can be improved with the incorporation of the prokaryotic genes acsA and acsB.
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Affiliation(s)
- X Li
- College of Agriculture and Biotechnology, Zhejiang University, 310029, Hangzhou, China
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30
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Yuan YL, Zhang TZ, Guo WZ, Yu J, Kohel RJ. [Major-polygene effect analysis of super quality fiber properties in upland cotton (G. hirsutum L.)]. Yi Chuan Xue Bao 2002; 29:827-34. [PMID: 12561232] [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: 02/28/2023]
Abstract
The modern textile industry depends on the improvement of fiber quality, especially strength to meet the needs of higher spinning speed. Inheritance of super quality fiber properties in Upland cotton was conducted in the present paper. P1, P2, F1, B1, B2 and F2 of eight crosses from five parents with different fiber strength, i.e. 7235 x TM1, TM1 x 7235, HS42 x TM1, PD69 x TM1, MD51 x TM1, 7235 x HS42, 7235 x PD69 and HS42 x PD69, and F2:3 for 7235 x TM1, were used in the study. The materials were planted in Nanjing or Hainan in 1998 and 1999, the individual plant fiber samples were tested with HVI system in Cotton Research Institute of CAAS at Anyang. The segregation analysis methods for major genes plus polygene mixed inheritance model developed by Gai were used to identify the genetic system of fiber qualities. The results from joint analyses of multiple segregating generations as well as single segregating generations, especially for F2:3, showed one major gene plus polygene mixed inheritance model in all fiber quality characters. The heritability values of major gene in F2 of 7235 x TM1 with great parent difference were estimated as 19.6% for fiber strength, 32.0% for micronaire and 13.9% for fiber length, but little in B1 and B2 for fiber qualities. The fiber length showed high and positive dominant effect, but negative value or zero of major or polygene dominant effects for other fiber qualities. Therefore, Mid-parent value or tendency to lower parent in F1 for most of fiber qualities lead to low selection efficiency, which suggests that molecular assisted selection should be considered at first in the improvement of fiber qualities.
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Affiliation(s)
- You-Lu Yuan
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, Department of Genetics & Crop Breeding, Nanjing Agricultural University, Nanjing 210095, China
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