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Chen R, Li D, Fu J, Fu C, Qin P, Zhang X, Sun Z, He K, Li L, Zhou W, Wang Y, Wang K, Liu X, Yang Y. Exploration of quality variation and stability of hybrid rice under multi-environments. Mol Breed 2024; 44:4. [PMID: 38225950 PMCID: PMC10788329 DOI: 10.1007/s11032-024-01442-3] [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] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 12/25/2023] [Indexed: 01/17/2024]
Abstract
Improving quality is an essential goal of rice breeding and production. However, rice quality is not solely determined by genotype, but is also influenced by the environment. Phenotype plasticity refers to the ability of a given genotype to produce different phenotypes under different environmental conditions, which can be a representation of the stability of traits. Seven quality traits of 141 hybrid combinations, deriving from the test-crossing of 7 thermosensitive genic male sterile (TGMS) and 25 restorer lines, were evaluated at 5 trial sites with intermittent sowing of three to five in Southern China. In the Yangtze River Basin, it was observed that delaying the sowing time of hybrid rice combinations leads to an improvement in their overall quality. Twelve parents were identified to have lower plasticity general combing ability (GCA) values with increased ability to produce hybrids with a more stable quality. The parents with superior quality tend to exhibit lower GCA values for plasticity. The genome-wide association study (GWAS) identified 13 and 15 quantitative trait loci (QTLs) associated with phenotype plasticity and BLUP measurement, respectively. Notably, seven QTLs simultaneously affected both phenotype plasticity and BLUP measurement. Two cloned rice quality genes, ALK and GL7, may be involved in controlling the plasticity of quality traits in hybrid rice. The direction of the genetic effect of the QTL6 (ALK) on alkali spreading value (ASV) plasticity varies in different cropping environments. This study provides novel insights into the dynamic genetic basis of quality traits in response to different cropping regions, cultivation practices, and changing climates. These findings establish a foundation for precise breeding and production of stable and high-quality rice. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-024-01442-3.
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Affiliation(s)
- Rirong Chen
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, National Center of Technology Innovation for Saline-Alkali Tolerant Rice, College of Biology, Hunan University, Changsha, 410082 Hunan China
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
| | - Dongxu Li
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
- Software Engineering Institute, East China Normal University, Shanghai, 200062 China
| | - Jun Fu
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
| | - Chenjian Fu
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
| | - Peng Qin
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
| | - Xuanwen Zhang
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
| | - Zhenbiao Sun
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
| | - Kui He
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
| | - Liang Li
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
| | - Wei Zhou
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
| | - Yingjie Wang
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
- College of Life Sciences, Hunan Normal University, Changsha, 410081 Hunan China
| | - Kai Wang
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
- College of Life Sciences, Hunan Normal University, Changsha, 410081 Hunan China
| | - Xuanming Liu
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, National Center of Technology Innovation for Saline-Alkali Tolerant Rice, College of Biology, Hunan University, Changsha, 410082 Hunan China
| | - Yuanzhu Yang
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, National Center of Technology Innovation for Saline-Alkali Tolerant Rice, College of Biology, Hunan University, Changsha, 410082 Hunan China
- State Key Laboratory of Hybrid Rice, Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Hunan Engineering Laboratory of Disease and Pest Resistant Rice Breeding, Yuan Longping High-Tech Agriculture Co., Ltd, Changsha, 410128 China
- College of Life Sciences, Hunan Normal University, Changsha, 410081 Hunan China
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Shang G, Meng Z, Qinyue Z, Feng X, Zhang W. Effects of exogenous zinc (ZnSO 4·7H 2O) on photosynthetic characteristics and grain quality of hybrid rice. Plant Physiol Biochem 2023; 205:108049. [PMID: 37948977 DOI: 10.1016/j.plaphy.2023.108049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/17/2023] [Accepted: 09/20/2023] [Indexed: 11/12/2023]
Abstract
Rice is an important food crop and zinc (Zn) is a beneficial microelement. However, there are few reports on the effect of zinc on yield and physiological characteristics of rice. In this study, exogenous zinc (ZnSO4·7H2O) was applied on plant to explore the effects of zinc on rice yield, quality and photosynthetic capacity. The results showed that appropriate concentration of zinc could increase the net photosynthetic rate (Pn) of rice leaves, and Zn2 (2 mg/L ZnSO4•7H2O) treatment was the most significant. However, the Zn treatment had no positive effect on rice yield except under the concentration of Zn2. Meanwhile, the result showed that Zn treatment could increase chalkiness degree (CD) and chalky grain rate (CGR), decreased amylose content (AC), increased protein content and changed protein composition of rice. The above indexes were most significant in Zn2 treatment. In addition, the Zn2 treatment significantly increased rapid viscosity analyzer (RVA) of rice. In conclusion, the results of this study suggested that Zn treatment could enhance the photosynthetic capacity of rice leaves, and improve the processing quality, taste quality and nutritional quality of rice. However, it will have a negative impact on the appearance quality of rice and cannot be used to increase rice production. This study will provide a basis for the application of zinc in rice production.
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Affiliation(s)
- Gao Shang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei, China.
| | - Zhou Meng
- College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei, China.
| | - Zhou Qinyue
- Anhui Agricultural University, 230000, Hefei, PR China
| | - Xu Feng
- College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei, China.
| | - Weiwei Zhang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei, China.
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3
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Wang Z, Li N, Wang W, Zhu Y, Liu Y. Endophytic bacterial community diversity in genetically related hybrid rice seeds. Appl Microbiol Biotechnol 2023; 107:6911-6922. [PMID: 37704771 DOI: 10.1007/s00253-023-12782-z] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 09/04/2023] [Accepted: 09/07/2023] [Indexed: 09/15/2023]
Abstract
The Food and Agriculture Organization of the United Nations (FAO) has identified hybrid rice as ideal for addressing food scarcity in poor nations. A comprehensive investigation of the endophytic bacteria in hybrid rice seeds is essential from a microecological perspective to illuminate the mechanisms underlying its high yield, high quality, and multi-resistance. The endophytic bacterial diversity and community structures of 11 genetically correlated hybrid rice seeds with different rice blast resistance levels were studied using high-throughput sequencing (HTS) on the Illumina MiSeq platform to reveal their "core microbiota" and explore the effect of genotypes, genetic relationships, and resistance. Proteobacteria (78.15-99.15%) represented the most abundant group in the 11 hybrid rice cultivars, while Pantoea, Pseudomonas, and Microbacterium comprised the "core microbiota." Hybrid rice seeds with different genotypes, genetic correlations, and rice blast resistance displayed endophytic bacterial community structure and diversity variation. In addition, the network relationships between the rice seed endophytic bacteria of "the same female parent but different male parents" were more complex than those from "the same male parent but different female parents." Matrilineal inheritance may be the primary method of passing on endophytic bacteria in rice from generation to generation. The endophytic bacterial interaction network in rice blast-resistant hybrid rice seed varieties was more complicated than in susceptible varieties. In summary, this study demonstrated that the genotype, genetic relationship, and rice blast resistance were important factors affecting the community structures and diversity of endophytic bacteria in hybrid rice seeds, which was vital for revealing the interaction between endophytic bacteria and the host. KEY POINTS: • Pantoea, Pseudomonas, and Microbacterium represent the main endophytic bacteria in hybrid rice seeds. • Genotype is the primary factor affecting endophytic bacterial diversity in hybrid rice seeds. • The diversity of the endophytic bacterial community in hybrid rice seeds is related to their genotypes, genetic relationships, and rice blast resistance.
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Affiliation(s)
- Zhishan Wang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Ni Li
- State Key Laboratory of Hybrid Rice (Hunan Hybrid Rice Research Center), Changsha, 410125, China
| | - Weiping Wang
- State Key Laboratory of Hybrid Rice (Hunan Hybrid Rice Research Center), Changsha, 410125, China.
| | - Yongqiang Zhu
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai (CHGC) and Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai, 201203, China.
| | - Yang Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
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4
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Malabayabas MLL, Mishra AK, Pede VO. Joint decision-making, technology adoption and food security: Evidence from rice varieties in eastern India. World Dev 2023; 171:106367. [PMID: 37916196 PMCID: PMC10502911 DOI: 10.1016/j.worlddev.2023.106367] [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] [Accepted: 08/05/2023] [Indexed: 11/03/2023]
Abstract
This study investigates the effect of married couples' joint decision-making on rice variety selection on rice productivity-a measure of food security. The study uses the 2016 Rice Monitoring Survey and the endogenous switching regression (ESR) method. Results show that rice farms with joint decision-makers (husband and wife) would have higher yields, particularly in households that adopted MRVGen1 (before 1986) rice varieties. Thus, families with joint-decision making have higher food security. Intervention programs for food insecurity should acknowledge and incorporate information regarding the persons responsible for making rice varietal decisions and the characteristics of modern rice varieties to ensure food security.
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Affiliation(s)
| | - Ashok K. Mishra
- Kemper and Ethel Marley Foundation Chair, Morrison School of Agribusiness, W. P. Carey School of Business, Arizona State University, Mesa, AZ 85212, USA
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Liu T, Hu W, Weng L, Deng L, Li J, Yu J, Zhou Z, Liu Y, Chen C, Sheng T, Zhao Z, Xiao G. Phenotypic and genetic dissection of the contents of important metallic elements in hybrid rice grown in cadmium-contaminated paddy fields. Heliyon 2023; 9:e19919. [PMID: 37809877 PMCID: PMC10559331 DOI: 10.1016/j.heliyon.2023.e19919] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023] Open
Abstract
Rice (Oryza sativa L.) is a staple food that feeds over half of the world's population, and the contents of metallic elements in rice grain play important roles in human nutrition. In this study, the contents of important metallic elements were determined by ICP-OES, and included cadmium (Cd), zinc (Zn), manganese (Mn), copper (Cu), iron (Fe), nickel (Ni), calcium (Ca), and magnesium (Mg) in brown rice, in the first node from the top (Node 1), in the second node from the top (Node 2), and in roots of 55 hybrids and their parental lines. The heritability of metallic element contents (MECs), the general combining ability (GCA) for MEC, and the correlation between MECs in different organs/tissues of hybrids were also analyzed. The results indicated that: (1) there was a positive correlation between the contents of Cd and Zn in nodes and roots, but a negative correlation between the contents of Cd and Zn in brown rice of the hybrids(2) the GCA for MECs can be used to evaluate the ability of the parental lines to improve the metal contents in brown rice of the hybrids(3) the contents of Cd, Zn, Ca, and Mg in brown rice were mainly affected by additive genetic effects(4) the restorer lines R2292 and R2265 can be used to cultivate hybrids with high Zn and low Cd contents in the brown rice.
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Affiliation(s)
- Tengfei Liu
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Wenbin Hu
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Lvshui Weng
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Lihua Deng
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Jinjiang Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Jianghui Yu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Zheng Zhou
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Ye Liu
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Caiyan Chen
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
- Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Teng Sheng
- Laboratory of Photosynthesis and Environmental Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China
- Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Zhenghong Zhao
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Guoying Xiao
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
- Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
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6
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Peng M, Gan F, Lin X, Yang R, Li S, Li W, Wu L, Fan X, Chen K. Overexpression of OsNF-YB4 leads to flowering early, improving photosynthesis and better grain yield in hybrid rice. Plant Sci 2023; 331:111661. [PMID: 36813243 DOI: 10.1016/j.plantsci.2023.111661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/17/2023] [Accepted: 02/19/2023] [Indexed: 06/18/2023]
Abstract
For cereal crops, such as rice, the grain yield mainly comes from the accumulation of carbohydrates in the seed, which depends ultimately on photosynthesis during the growth period. To create early ripen variety, higher efficiency of photosynthesis is thus necessary to get higher grain yield with shorter growth period. In this study, flowering early was observed in the hybrid rice with overexpression of OsNF-YB4. Along with the flowering early, the hybrid rice also was shorter in plant height with less of leaves and internodes, but no changes of panicle length and leaf emergence. The grain yield was kept or even increased in the hybrid rice with shorter growth period. Transcription analysis revealed that Ghd7-Ehd1-Hd3a/RFT1 was activated early to promote the flowering transition in the overexpression hybrids. RNA-Seq study further showed that carbohydrate-related pathways were significantly altered in addition to circadian pathway. Notably, up-regulation of three pathways related to plant photosynthesis was observed, as well. Increased carbon assimilation with alteration of chlorophyll contents was subsequently detected in the following physiological experiments. All these results demonstrate that overexpression of OsNF-YB4 in the hybrid rice activates flowering early and improves photosynthesis resulting in better grain yield with shorter growth period.
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Affiliation(s)
- Meifang Peng
- Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, 106 Shizishan Road, Chengdu 610061, Sichuan, China
| | - Feng Gan
- Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, 106 Shizishan Road, Chengdu 610061, Sichuan, China
| | - Xiaomin Lin
- Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, 106 Shizishan Road, Chengdu 610061, Sichuan, China
| | - Run Yang
- Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, 106 Shizishan Road, Chengdu 610061, Sichuan, China
| | - Shaoyi Li
- Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, 106 Shizishan Road, Chengdu 610061, Sichuan, China
| | - Wei Li
- Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, 106 Shizishan Road, Chengdu 610061, Sichuan, China
| | - Lan Wu
- Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, 106 Shizishan Road, Chengdu 610061, Sichuan, China
| | - Xiaoli Fan
- Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, 106 Shizishan Road, Chengdu 610061, Sichuan, China
| | - Kegui Chen
- Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, 106 Shizishan Road, Chengdu 610061, Sichuan, China.
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Yi Z, Zhang Z, Chen G, Rengel Z, Sun H. Microplastics have rice cultivar-dependent impacts on grain yield and quality, and nitrogenous gas losses from paddy, but not on soil properties. J Hazard Mater 2023; 446:130672. [PMID: 36580778 DOI: 10.1016/j.jhazmat.2022.130672] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/05/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
Microplastics might affect the nitrogen (N)-use efficiency, crop production, and reactive N losses in agricultural system. However, it remains unclear whether the effects are dependent on crop cultivar. Here, a pot experiment was conducted to evaluate the effects of a typical polyethylene (PE) microplastics addition on grain yield and amino acid content, N-use efficiency, ammonia (NH3) volatilization and nitrous oxide (N2O) emission, and properties of paddy soil planted with common rice Nangeng 5055 (NG) and hybrid rice Jiafengyou 6 (JFY). The results showed that PE addition significantly reduced the grain yield and total grain amino acid content of hybrid rice by 23% and 1.7%, respectively. In addition, PE addition significantly decreased the N agronomic and recovery efficiencies of hybrid rice by 30% and 27%, respectively. For paddy soil in which hybrid rice was grown, PE addition significantly increased NH3 volatilization by 72%, but exerted no influence on N2O emission. Interestingly, the N2O emission from NG+PE treatment was 15% significantly lower than that from NG treatment, which was associated with decreased gene copies of nirK (by 50%) and nirS (by 84%) in NG+PE treatment. Generally, no significant change in soil properties was found as result of microplastics addition regardless of the cultivar. In conclusion, the impacts of microplastics on rice production and quality, N-use efficiency and nitrogenous gas losses from paddy soil are cultivar-dependent.
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Affiliation(s)
- Zhenghua Yi
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China.
| | - Zhenhua Zhang
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Wetlands, Yancheng Teachers University, Yancheng 224007, China.
| | - Gui Chen
- Institute of Biotechnology, Jiaxing Academy of Agricultural Science, Jiaxing 314016, China.
| | - Zed Rengel
- School of Agriculture and Environment, The University of Western Australia, Crawley, WA 6009, Australia; Institute for Adriatic Crops and Karst Reclamation, Split 21000, Croatia.
| | - Haijun Sun
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China.
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Sarkar S, Ray K, Garai S, Banerjee H, Haldar K, Nayak J. Modelling nitrogen management in hybrid rice for coastal ecosystem of West Bengal, India. PeerJ 2023; 11:e14903. [PMID: 36819997 PMCID: PMC9938656 DOI: 10.7717/peerj.14903] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 01/24/2023] [Indexed: 02/17/2023] Open
Abstract
Hybrid rice requires adequate nitrogen (N) management in order to achieve good yields from its vegetative and reproductive development. With this backdrop, a field experiment was conducted at Regional Research Station (Coastal Saline Zone), Bidhan Chandra Krishi Viswavidyalaya, Kakdwip, West Bengal (India) to record growth and yield performance of hybrid rice (cv. PAN 2423) under varied N-fertilizer doses. A modelling approach was adopted for the first time in hybrid rice production system under coastal ecosystem of West Bengal (India). In the present study, the Agricultural Production Systems Simulator (APSIM) model was calibrated and validated for simulating a hybrid rice production system with different N rates. The APSIM based crop simulation model was found to capture the physiological changes of hybrid rice under varied N rates effectively. While studying the relationship between simulated and observed yield data, we observed that the equations developed by APSIM were significant with higher R2 values (≥0.812). However, APSIM caused an over-estimation for calibrate data but it was rectified for validated data. The RMSE of models for all the cases was less than respective SD values and the normalized RMSE values were ≤20%. Hence, it was proved to be a good rationalized modelling and the performance of APSIM was robust. On the contrary, APSIM underestimated the calibrated amount of N (kg ha-1) in storage organ of hybrid rice, which was later rectified in case of validated data. A strong correlation existed between the observed and APSIM-simulated amounts of N in storage organ of hybrid rice (R2 = 0.94** and 0.96** for the calibration and validation data sets, respectively), which indicates the robustness of the APSIM simulation study. Scenario analysis also suggests that the optimal N rate will increase from 160 to 200 kg N ha-1 for the greatest hybrid rice production in coming years under elevated CO2 levels in the atmosphere. The APSIM-Oryza crop model had successfully predicted the variation in aboveground biomass and grain yield of hybrid rice under different climatic conditions.
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Affiliation(s)
- Sukamal Sarkar
- School of Agriculture and Rural Development, Ramakrishna Mission Vivekananda Educational and Research Institute, Kolkata, West Bengal, India
| | - Krishnendu Ray
- Sasya Shyamala Krishi Vigyan Kendra, Ramakrishna Mission Vivekananda Educational and Research Institute, Kolkata, West Bengal
| | - Sourav Garai
- School of Agriculture and Rural Development, Ramakrishna Mission Vivekananda Educational and Research Institute, Kolkata, West Bengal, India
| | - Hirak Banerjee
- Regional Research Station (CSZ), Bidhan Chandra Krishi Viswavidyalaya, Kakdwip, West Bengal, India
| | - Krisanu Haldar
- School of Agriculture and Rural Development, Ramakrishna Mission Vivekananda Educational and Research Institute, Kolkata, West Bengal, India
| | - Jagamohan Nayak
- Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, West Bengal, India
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9
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Singh AK, Ponnuswamy R, Srinivas Prasad M, Sundaram RM, Hari Prasad AS, Senguttuvel P, Kempa Raju KB, Sruthi K. Improving blast resistance of maintainer line DRR 9B by transferring broad spectrum resistance gene Pi2 by marker assisted selection in rice. Physiol Mol Biol Plants 2023; 29:253-262. [PMID: 36819122 PMCID: PMC9930015 DOI: 10.1007/s12298-023-01291-y] [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] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 01/31/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Hybrid rice technology offers great promise to further enhance rice production and productivity for global food security. Improving hybrid rice parental lines is the first step in developing heterotic rice hybrids. To improve resistance against blast disease, a maintainer line DRR 9B was fortified with a major broad-spectrum blast resistance gene Pi2 through marker-assisted selection. The rice blast caused by Magnaporthe oryzae is a major disease and can cause severe yield losses upto 100%. The NILs of Samba Mahsuri namely BA-23-11-89-12-168 possessing Pi2 was utilized as a donor parent. The PCR-based molecular marker tightly linked to Pi2 gene was used for the foreground selection at BC1F1 generation. The molecular marker tightly linked to the major fertility restorer gene Rf4 was used for negative selection (i.e., selection of plants possessing non fertility restoring alleles) at BC1F1 generation to identify maintainer lines. The positive plants with Rf4 gene were added to the restorer pool for restorer line development. At each stage, MAS for Pi2 coupled with stringent phenotypic selection for agro-morphological and grain quality traits were exercised. At BC1F3 generation, one hundred families were screened against blast disease at uniform blast nursery (UBN) and selected resistant lines were advanced to next generations. In the BC1F5 generation plants were subjected to agro-morphological evaluation for yield and yield-contributing traits. The selected plants at BC1F5 generation were crossed with DRR 9A to assess the maintainer ability of blast resistance lines and for further CMS line conversion for hybrid rice breeding for developing blast resistance rice hybrids.
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Affiliation(s)
- Arun Kumar Singh
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana India
| | - Revathi Ponnuswamy
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana India
| | - M. Srinivas Prasad
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana India
| | - R. M. Sundaram
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana India
| | - A. S. Hari Prasad
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana India
| | - P. Senguttuvel
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana India
| | - K. B. Kempa Raju
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana India
| | - K. Sruthi
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana India
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10
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Xie J, Wang W, Yang T, Zhang Q, Zhang Z, Zhu X, Li N, Zhi L, Ma X, Zhang S, Liu Y, Wang X, Li F, Zhao Y, Jia X, Zhou J, Jiang N, Li G, Liu M, Liu S, Li L, Zeng A, Du M, Zhang Z, Li J, Zhang Z, Li Z, Zhang H. Large-scale genomic and transcriptomic profiles of rice hybrids reveal a core mechanism underlying heterosis. Genome Biol 2022; 23:264. [PMID: 36550554 PMCID: PMC9773586 DOI: 10.1186/s13059-022-02822-8] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Heterosis is widely used in agriculture. However, its molecular mechanisms are still unclear in plants. Here, we develop, sequence, and record the phenotypes of 418 hybrids from crosses between two testers and 265 rice varieties from a mini-core collection. RESULTS Phenotypic analysis shows that heterosis is dependent on genetic backgrounds and environments. By genome-wide association study of 418 hybrids and their parents, we find that nonadditive QTLs are the main genetic contributors to heterosis. We show that nonadditive QTLs are more sensitive to the genetic background and environment than additive ones. Further simulations and experimental analysis support a novel mechanism, homo-insufficiency under insufficient background (HoIIB), underlying heterosis. We propose heterosis in most cases is not due to heterozygote advantage but homozygote disadvantage under the insufficient genetic background. CONCLUSION The HoIIB model elucidates that genetic background insufficiency is the intrinsic mechanism of background dependence, and also the core mechanism of nonadditive effects and heterosis. This model can explain most known hypotheses and phenomena about heterosis, and thus provides a novel theory for hybrid rice breeding in future.
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Affiliation(s)
- Jianyin Xie
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Weiping Wang
- grid.496830.00000 0004 7648 0514State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
| | - Tao Yang
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Quan Zhang
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Zhifang Zhang
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Xiaoyang Zhu
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Ni Li
- grid.496830.00000 0004 7648 0514State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
| | - Linran Zhi
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Xiaoqian Ma
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Shuyang Zhang
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Yan Liu
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Xueqiang Wang
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Fengmei Li
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China ,grid.428986.90000 0001 0373 6302Sanya Nanfan Research Institute of Hainan University, Sanya, 572024 China
| | - Yan Zhao
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Xuewei Jia
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Jieyu Zhou
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Ningjia Jiang
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China ,Sanya Institute of China Agricultural University, Sanya, 572024 China
| | - Gangling Li
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Miaosong Liu
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Shijin Liu
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Lin Li
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - An Zeng
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China ,grid.428986.90000 0001 0373 6302Sanya Nanfan Research Institute of Hainan University, Sanya, 572024 China ,Sanya Institute of China Agricultural University, Sanya, 572024 China
| | - Mengke Du
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China ,grid.428986.90000 0001 0373 6302Sanya Nanfan Research Institute of Hainan University, Sanya, 572024 China
| | - Zhanying Zhang
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Jinjie Li
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China
| | - Ziding Zhang
- grid.22935.3f0000 0004 0530 8290State Key Laboratory for Agrobiotechnology, China Agricultural University, Beijing, 100193 China
| | - Zichao Li
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China ,Sanya Institute of China Agricultural University, Sanya, 572024 China ,grid.22935.3f0000 0004 0530 8290State Key Laboratory for Agrobiotechnology, China Agricultural University, Beijing, 100193 China
| | - Hongliang Zhang
- grid.22935.3f0000 0004 0530 8290Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education / Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193 China ,grid.428986.90000 0001 0373 6302Sanya Nanfan Research Institute of Hainan University, Sanya, 572024 China ,Sanya Institute of China Agricultural University, Sanya, 572024 China
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11
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Zhang F, Zhang C, Zhao X, Zhu S, Chen K, Zhou G, Wu Z, Li M, Zheng T, Wang W, Yan Z, Fei Q, Li Z, Chen J, Xu J. Genomic Architecture of Yield Performance of an Elite Rice Hybrid Revealed by its Derived Recombinant Inbred Line and Their Backcross Hybrid Populations. Rice (N Y) 2022; 15:49. [PMID: 36181551 PMCID: PMC9526777 DOI: 10.1186/s12284-022-00595-z] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Since its development and wide adoption in China, hybrid rice has reached the yield plateau for more than three decades. To understand the genetic basis of heterosis in rice and accelerate hybrid rice breeding, the yield performances of the elite rice hybrid, Quan-you-si-miao (QYSM) were genetically dissected by whole-genome sequencing, large-scale phenotyping of 1061 recombined inbred lines (RILs) and 1061 backcross F1 (BCF1) hybrids derived from QYSM's parents across three environments and gene-based analyses. RESULTS Genome-wide scanning of 13,847 segregating genes between the parents and linkage mapping based on 855 bins across the rice genome and phenotyping experiments across three environments resulted in identification of large numbers of genes, 639 main-effect QTLs (M-QTLs) and 2736 epistatic QTLs with significant additive or heterotic effects on the trait performances of the combined population consisting of RILs and BCF1 hybrids, most of which were environment-specific. The 324 M-QTLs affecting yield components included 32.7% additive QTLs, 38.0% over-dominant or dominant ones with strong and positive effects and 29.3% under-dominant or incomplete recessive ones with significant negative heterotic effects. 63.6% of 1403 genes with allelic introgression from subspecies japonica/Geng in the parents of QYSM may have contributed significantly to the enhanced yield performance of QYSM. CONCLUSIONS The parents of QYSM and related rice hybrids in China carry disproportionally more additive and under-dominant genes/QTLs affecting yield traits. Further focus in indica/Xian rice breeding should shift back to improving inbred varieties, while breaking yield ceiling of Xian hybrids can be achieved by one or combinations of the three strategies: (1) by pyramiding favorable alleles of additive genes, (2) by eliminating or minimizing under-dominant loci, and (3) by pyramiding overdominant/dominant genes polymorphic, particularly those underlying inter-subspecific heterosis.
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Affiliation(s)
- Fan Zhang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- College of Agronomy, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Conghe Zhang
- Winall Hi-Tech Seed Co., Ltd., Hefei, 230088, Anhui, China
| | - Xiuqin Zhao
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Shuangbing Zhu
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangzhou, 518120, China
| | - Kai Chen
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangzhou, 518120, China
| | - Guixiang Zhou
- Winall Hi-Tech Seed Co., Ltd., Hefei, 230088, Anhui, China
| | - Zhichao Wu
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Min Li
- College of Agronomy, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Tianqing Zheng
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Wensheng Wang
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- College of Agronomy, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Zhi Yan
- Winall Hi-Tech Seed Co., Ltd., Hefei, 230088, Anhui, China
| | - Qinyong Fei
- Winall Hi-Tech Seed Co., Ltd., Hefei, 230088, Anhui, China
| | - Zhikang Li
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
- College of Agronomy, Anhui Agricultural University, Hefei, 230036, Anhui, China.
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangzhou, 518120, China.
| | - Jinjie Chen
- Winall Hi-Tech Seed Co., Ltd., Hefei, 230088, Anhui, China.
| | - Jianlong Xu
- Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangzhou, 518120, China.
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12
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Luo Q, Bai B, Xie Y, Yao D, Zhang D, Chen Z, Zhuang W, Deng Q, Xiao Y, Wu J. Effects of Cd uptake, translocation and redistribution in different hybrid rice varieties on grain Cd concentration. Ecotoxicol Environ Saf 2022; 240:113683. [PMID: 35653975 DOI: 10.1016/j.ecoenv.2022.113683] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
In order to identify the key transport process that determines the Cd concentration in brown rice, this study used 21 hybrid rice varieties as experimental materials and conducted field experiments in Qiyang (cadmium-contaminated site) and Yongding (low-cadmium site). Cd concentrations in 8 organs were measured, and bioconcentration factors and transfer factor were further calculated. The results showed that the Cd concentrations of the organs related to the xylem transport were as follows: root > node > stem > leaf sheath > leaf. In the phloem, the Cd concentrations were as follows: rachis > brown rice > rice husk. And the results of the correlation analysis found that Cd concentration between brown rice and root showed a significant positive correlation in Cd-contaminated site, but no significant correlation in low-cadmium site. Meanwhile, at both experimental sites, the Cd concentration of brown rice showed the most significant correlation with the phloem transfer factor from leaf and leaf sheath to brown rice. Principal Component Analysis (PCA) and stepwise regression analysis likewise found that Cd concentration in leaf and leaf sheath and their phloem transport of Cd to brown rice were significantly and positively correlated with Cd concentration in brown rice. The above results showed that the transport of leaf and leaf sheath to brown rice was a key process, and played a more important role in the accumulation of cadmium in brown rice than in root.
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Affiliation(s)
- Qiuhong Luo
- College of Agronomy, Hunan Agricultural University, Changsha, Hunan 410128, China; State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, Hunan 410125, China
| | - Bin Bai
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, Hunan 410125, China
| | - Yunhe Xie
- Hunan Institute of Agro-Environment and Ecology, Hunan Academy of Agricultural Science, Changsha, Hunan 410125, China
| | - Dongping Yao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, Hunan 410125, China
| | - Dongmeng Zhang
- College of Agronomy, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Zhe Chen
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, Hunan 410125, China
| | - Wen Zhuang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, Hunan 410125, China
| | - Qiyun Deng
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, Hunan 410125, China; BioRice (Hunan) Co., Ltd., Changsha, Hunan 410323, China
| | - Yinghui Xiao
- College of Agronomy, Hunan Agricultural University, Changsha, Hunan 410128, China.
| | - Jun Wu
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, Hunan 410125, China.
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13
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Yu P, Ye C, Li L, Yin H, Zhao J, Wang Y, Zhang Z, Li W, Long Y, Hu X, Xiao J, Jia G, Tian B. Genome-wide association study and genomic prediction for yield and grain quality traits of hybrid rice. Mol Breed 2022; 42:16. [PMID: 37309463 PMCID: PMC10248665 DOI: 10.1007/s11032-022-01289-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
Genomic selection is an efficient tool for breeding selection, especially for quantitative traits controlled by multiples genes with low heritability. To validate the application of genomic selection in hybrid rice breeding, the yield and grain quality traits of 404 hybrid rice breeding lines were investigated, and the same accessions were genotyped by using a 56 K SNP chip. There were wide variances among the tested accessions for all the measured traits, and most of the traits were correlated. A total of 67 significant loci were identified for the yield-related traits, and 123 significant loci were identified for the grain quality traits by GWAS. Two of these loci associated with increasing grain yield but decreasing grain quality. The GEBVs of all the yield and grain quality traits were calculated by using 15 different prediction algorithms. The plant height, panicle length, thousand grain weight, grain length and width ratio, amylose content, and alkali value have higher predictability than other traits. However, the predictive accuracy of different GS models is different for different traits. This study provided useful information for genomic selection of specific trait using proper markers and prediction models. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-022-01289-6.
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Affiliation(s)
- Peiyi Yu
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Changrong Ye
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Le Li
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Hexing Yin
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Jian Zhao
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Yongka Wang
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Zhe Zhang
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Weiguo Li
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Yu Long
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Xueyi Hu
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Jinhua Xiao
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Gaofeng Jia
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
| | - Bingchuan Tian
- Huazhi Biotechnology Co. Ltd, Changsha, 410125 Hunan China
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14
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Huang M, Hu L, Cao J, Zhang R, Chen J, Cao F, Liu L, Fang S, Zhang M. Texture and digestion properties of hybrid rice: A comparison between two cultivars released 18 years apart. Food Chem X 2022; 13:100215. [PMID: 35498962 PMCID: PMC9039887 DOI: 10.1016/j.fochx.2022.100215] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 12/30/2021] [Accepted: 01/14/2022] [Indexed: 01/19/2023] Open
Abstract
A recently released high-quality rice hybrid JLY1468 was compared with an old rice hybrid LYPJ. Hardness of cooked rice was 37% lower in JLY1468 than in LYPJ. The glucose production rate from starch digestion was 33% faster in JLY1468 than in LYPJ. This study indicates potential health risks associated with soft-textured high-quality rice.
Field experiments were conducted to compare two hybrid rice cultivars—a recently released high-quality cultivar (Jingliangyou 1468, JLY1468) and a relatively older cultivar (Liangyoupeijiu, LYPJ). Results showed that hardness, springiness, cohesiveness, resilience, and chewiness of cooked milled rice were all lower in JLY1468 than in LYPJ, due to its lower amylose content and altered paste properties of milled rice flour. Active digestion duration of cooked milled rice was 26% shorter and the glucose production rate from starch digestion was 33% faster in JLY1468 compared with LYPJ. Texture and starch digestion properties of cooked milled rice as a factor of temperature during the grain-filling period were different between LYPJ and JLY1468 due to differing amylose contents and gel consistencies of milled rice flour in response to temperature. This study highlights that attention should be paid to potential health risks associated with the development of high-quality hybrid rice cultivars with soft texture.
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Affiliation(s)
- Min Huang
- Rice and Product Ecophysiology, Key Laboratory of Ministry of Education for Crop Physiology and Molecular Biology, Hunan Agricultural University, Changsha 410128, China
| | - Liqin Hu
- Rice and Product Ecophysiology, Key Laboratory of Ministry of Education for Crop Physiology and Molecular Biology, Hunan Agricultural University, Changsha 410128, China
| | - Jialin Cao
- Rice and Product Ecophysiology, Key Laboratory of Ministry of Education for Crop Physiology and Molecular Biology, Hunan Agricultural University, Changsha 410128, China
| | - Ruichun Zhang
- Institute of Agricultural Resource and Environment, Hengyang Academy of Agricultural Sciences, Hengyang 421101, China
| | - Jiana Chen
- Rice and Product Ecophysiology, Key Laboratory of Ministry of Education for Crop Physiology and Molecular Biology, Hunan Agricultural University, Changsha 410128, China
| | - Fangbo Cao
- Rice and Product Ecophysiology, Key Laboratory of Ministry of Education for Crop Physiology and Molecular Biology, Hunan Agricultural University, Changsha 410128, China
| | - Longsheng Liu
- Institute of Plant Protection and Farming Technology, Hengyang Academy of Agricultural Sciences, Hengyang 421101, China
| | - Shengliang Fang
- Institute of Plant Protection and Farming Technology, Hengyang Academy of Agricultural Sciences, Hengyang 421101, China
| | - Ming Zhang
- Institute of Plant Protection and Farming Technology, Hengyang Academy of Agricultural Sciences, Hengyang 421101, China
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15
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Zhang G, Kobayashi K, Wu H, Shang B, Wu R, Zhang Z, Feng Z. Ethylenediurea (EDU) protects inbred but not hybrid cultivars of rice from yield losses due to surface ozone. Environ Sci Pollut Res Int 2021; 28:68946-68956. [PMID: 34286427 DOI: 10.1007/s11356-021-15032-9] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
The rising concentration of ground-level ozone (O3) reduces crop yield via increased oxidative stress. Application of ethylenediurea (EDU) protects plants from O3 and could thereby serve as a means to estimate the crop yield losses due to ambient O3 (AO3). However, no study but a few exceptions has ever compared the yield loss estimates from EDU application with those from O3 elevation experiments. Here, we estimated yield loss to AO3 in rice cultivars across the 3 types, indica, japonica, and hybrid, by an EDU application in the field, and compared the yield losses with those estimated with dose-response relationships based on O3 elevation experiments. Relative yield loss (RYL) in the EDU application was estimated at 16% across the rice types on an assumption of a 100% efficiency for protection of crop yield by EDU. This estimate of RYL was close to the 15% RYL estimated from the O3 elevation experiments when a common sensitivity to O3 is assumed across the cultivars. The rice yield loss due to AO3 was thus consistent between the two approaches supporting the idea of EDU application for the yield loss estimation. When only hybrids are focused, however, the RYL from EDU application (16%) was much lower than the 34% RYL from the O3 elevation experiments, which indicates only a 37% yield protection by EDU in the hybrid rice. The incomplete protection by EDU and its genetic variability indicates the need to quantify the efficiency of protection from AO3-induced yield loss as estimated with O3 manipulating experiments.
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Affiliation(s)
- Guoyou Zhang
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China
| | | | - Hengchao Wu
- College of Wetland, Southwest Forestry University, Kunming, 650224, China
| | - Bo Shang
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Rongjun Wu
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Zujian Zhang
- Agricultural College, Yangzhou University, Yangzhou, 225009, China
| | - Zhaozhong Feng
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
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16
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Prahalada GD, Marathi B, Vinarao R, Kim SR, Diocton R, Ramos J, Jena KK. QTL Mapping of a Novel Genomic Region Associated with High Out-Crossing Rate Derived from Oryza longistaminata and Development of New CMS Lines in Rice, O. sativa L. Rice (N Y) 2021; 14:80. [PMID: 34529158 PMCID: PMC8446144 DOI: 10.1186/s12284-021-00521-9] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 08/30/2021] [Indexed: 05/27/2023]
Abstract
High seed cost due to poor seed yield severely limits the adoption of hybrid rice by farmers. Increasing the out-crossing rate is one of the key strategies to increase hybrid seed production. Out-crossing rate is highly influenced by the size of female floral traits, which capture pollen grains from male donor plants. In the current study, we identified 14 QTLs derived from the perennial wild rice Oryza longistaminata by composite interval mapping for five key floral traits: stigma length (five), style length (three), stigma breadth (two), stigma area (one), and pistil length (three). QTL analysis and correlation studies revealed that these stigma traits were positively correlated and pleiotropic to the stigma length trait. We selected the major-effect QTL qSTGL8.0 conferring long stigma phenotype for further fine mapping and marker-assisted selection. The qSTGL8.0 (~ 3.9 Mb) was fine mapped using newly developed internal markers and was narrowed down to ~ 2.9 Mb size (RM7356-RM256 markers). Further, the flanking markers were validated in a segregating population and in progenies from different genetic backgrounds. The markers PA08-03 and PA08-18 showed the highest co-segregation with the stigma traits. The qSTGL8.0 was introgressed into two cytoplasmic male sterile (CMS) lines, IR58025A and IR68897A, by foreground, background, and trait selection approaches. The qSTGL8.0 introgression lines in CMS backgrounds showed a significantly higher seed setting rate (2.5-3.0-fold) than the original CMS lines in test crosses with their corresponding maintainer lines. The newly identified QTLs especially qSTGL8.0, will be quite useful for increasing out-crossing rate and this will contribute to increase seed production and decrease seed cost.
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Affiliation(s)
- G D Prahalada
- Novel Gene Resources Laboratory, Strategic Innovation Platform, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
| | - Balram Marathi
- PJ Telangana State Agricultural University, Hyderabad, Telangana, 500030, India
| | - Ricky Vinarao
- Novel Gene Resources Laboratory, Strategic Innovation Platform, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
| | - Sung-Ryul Kim
- Novel Gene Resources Laboratory, Strategic Innovation Platform, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
| | - Reynaldo Diocton
- Novel Gene Resources Laboratory, Strategic Innovation Platform, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
| | - Joie Ramos
- Novel Gene Resources Laboratory, Strategic Innovation Platform, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
| | - Kshirod K Jena
- Novel Gene Resources Laboratory, Strategic Innovation Platform, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines.
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, 751024, India.
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17
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He Y, Zhang Y, Liao Y, Dennis ES, Peacock WJ, Wu X. Rice hybrid mimics have stable yields equivalent to those of the F1 hybrid and suggest a basis for hybrid vigour. Planta 2021; 254:51. [PMID: 34389910 DOI: 10.1007/s00425-021-03700-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
We have developed long term stable high yielding rice lines, Hybrid Mimics, from commercial hybrids. The vigour of the Mimic and the hybrid are developmental changes. These Mimics could substitute for hybrid seed for planting. We have used two pre-existing high-yielding hybrid systems (FLY1 and DY527) to develop Hybrid Mimics. In the FLY1 hybrid system we selected, under field conditions, F6 lines which have high grain yields and biomass equivalent to the F1 hybrids, stable over subsequent F7, F8 and later generations. We have termed these lines Hybrid Mimics. The mimics are mostly homozygous as a consequence of selfing in each generation. We have repeated this selection procedure in the second independent hybrid system DY527, producing Mimics with similar characteristics to the F1 hybrid. In both hybrid systems the selection criterion, based on the phenotype of the F1 hybrid, results in the Mimics having grain yield and biomass similar to that of the F1 hybrid. In each generation of the breeding program the plant population has increased phenotypic homogeneity. The genomes of the Mimic plants do not contain any common heterozygous segments negating claims that the vigour of hybrids depends upon heterozygosity of particular loci. Both hybrids and Mimics have early germination and commence photosynthesis before the parents, providing enhanced growth which is maintained throughout the life cycle. The biochemical parameters of photosynthesis in the hybrids and Mimics do not differ from those of the parents. Grain quality and resistance to the two major diseases, bacterial blight and rice blast are similar in the Mimics and hybrids. The Mimics overcome the major disadvantage of hybrids where F2 phenotypic segregation prevents their use as a crop beyond the F1 generation.
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Affiliation(s)
- Yao He
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - You Zhang
- University of Technology Sydney, Broadway Sydney, NSW, 2007, Australia
- CSIRO Agriculture and Food, Canberra, ACT, 2601, Australia
| | - Yongxiang Liao
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Elizabeth S Dennis
- University of Technology Sydney, Broadway Sydney, NSW, 2007, Australia.
- CSIRO Agriculture and Food, Canberra, ACT, 2601, Australia.
| | - W James Peacock
- University of Technology Sydney, Broadway Sydney, NSW, 2007, Australia
- CSIRO Agriculture and Food, Canberra, ACT, 2601, Australia
| | - Xianjun Wu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China.
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18
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El-Mowafi HF, AlKahtani MDF, El-Hity MA, Reda AM, Husnain LA, El-Degwy ES, Abdallah RM, AlGwaiz HIM, Hadifa AA, Attia KA. Characterization of fertility alteration and marker validation for male sterility genes in novel PTGMS lines hybrid rice. Saudi J Biol Sci 2021; 28:4109-4116. [PMID: 34354389 PMCID: PMC8324962 DOI: 10.1016/j.sjbs.2021.04.058] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 11/24/2022] Open
Abstract
Photoperiod and thermosensitive genetic male sterile (PTGMS) lines have become one of the main sources of global rice production increasing. This study was conducted to evaluate the fertility alteration and validate the male sterility genes using validation markers in novel Egyptian Indica and Japonica PTGMS lines under natural conditions. The study revealed that the new genetic male sterile lines belong to the type of photo–thermosensitive genetic male sterility (PTGMS). The fertility alteration of these lines has influenced by photoperiod and temperature interaction. The new PTGMS lines have three sensitive periods of fertility alteration; transformation, sterility, and fertility period. Furthermore, the sensitive stage of fertility transformation might be from secondary branch primordial to pollen mother cells (PMC) meiosis. Under the natural Sakha condition, the new PTGMS lines were stable sterile under the condition of day length upper 13,75 h and temperature over 25 °C, while its convert to fertile under day length under 13 h, and temperature lower than 24 °C. The co-dominant markers identified the pms3 and tms5 genes in the new PTGMS lines, indicated that the fertility alteration in these lines controlled by photoperiod and thermosensitive stages.
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Affiliation(s)
- Hamdi F El-Mowafi
- Rice Department, Field Crops Research Institute, ARC, Sakha, Kafr El-Sheikh 33717, Egypt
| | - Muneera D F AlKahtani
- Biology Department, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 102275, Riyadh 11675, Saudi Arabia
| | - Mahmoud A El-Hity
- Agronomy Department, College of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33512, Egypt
| | - Amr M Reda
- Rice Department, Field Crops Research Institute, ARC, Sakha, Kafr El-Sheikh 33717, Egypt
| | - Latifa Al Husnain
- Biology Department, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 102275, Riyadh 11675, Saudi Arabia
| | - E S El-Degwy
- Agronomy Department, College of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33512, Egypt
| | - Rizk M Abdallah
- Rice Department, Field Crops Research Institute, ARC, Sakha, Kafr El-Sheikh 33717, Egypt
| | - Hussah I M AlGwaiz
- Rice Department, Field Crops Research Institute, ARC, Sakha, Kafr El-Sheikh 33717, Egypt
| | - A A Hadifa
- Rice Department, Field Crops Research Institute, ARC, Sakha, Kafr El-Sheikh 33717, Egypt
| | - Kotb A Attia
- Center of Excellence in Biotechnology Research, King Saud University, Riyadh POX 2455-11451, Saudi Arabia.,Rice Department, Field Crops Research Institute, ARC, Sakha, Kafr El-Sheikh 33717, Egypt
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19
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Li Y, Lu Y, Zhou Y, Wei X, Peng Y, Dai Y, Zhang L, Zhu Z. Diurnal transcriptomics analysis reveals the regulatory role of the circadian rhythm in super- hybrid rice LY2186. Genomics 2021; 113:1281-1290. [PMID: 33705889 DOI: 10.1016/j.ygeno.2020.12.046] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/23/2020] [Accepted: 12/09/2020] [Indexed: 12/13/2022]
Abstract
Heterosis, an important biological phenomenon wherein F1 hybrids exhibit better performance than any of their parents, has been widely applied; however, its underlying mechanism remains largely unknown. Here, we studied and compared the dynamic transcriptional profiles of super-hybrid rice LY2186 and its parents at 17 time points during 2 day/night cycles and identified 1552 rhythmic differentially expressed genes (RDGs). Cluster and functional enrichment analyses revealed that the day- and night-phased RDGs were mainly enriched in the photosynthesis and stress response categories, respectively. Regulatory network analysis indicated that circadian-related RDGs are core components in both the day and night phases and extensively regulate downstream genes involved in photosynthesis, starch synthesis, plant hormone signal transduction, and other pathways. Furthermore, among the 282 RDGs mapped onto the quantitative tract loci of small intervals (≤100 genes), 72.3% were significantly enriched in the yield, vigor, and anatomy categories. These findings provide valuable information for exploring heterosis mechanisms further and guiding breeding practices.
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Affiliation(s)
- Yue Li
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Yufei Lu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Yun Zhou
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Xiaoli Wei
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Yonggang Peng
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Yan Dai
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China.
| | - Lei Zhang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China.
| | - Zhen Zhu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China.
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20
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Peng Y, Mao B, Zhang C, Shao Y, Wu T, Hu L, Hu Y, Tang L, Li Y, Tang W, Xiao Y, Zhao B. Influence of physicochemical properties and starch fine structure on the eating quality of hybrid rice with similar apparent amylose content. Food Chem 2021; 353:129461. [PMID: 33735769 DOI: 10.1016/j.foodchem.2021.129461] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 11/26/2020] [Accepted: 02/22/2021] [Indexed: 11/30/2022]
Abstract
In this study, we compared the physicochemical properties and starch structures of hybrid rice varieties with similar apparent amylose content but different taste values. In addition to the apparent amylose content, gel permeation chromatography analysis showed that the higher proportions of amylopectin short chains and relatively lower proportions of amylopectin long chains, which could lead to higher peak viscosity and breakdown value, as well as a softer and stickier texture of cooked rice, were the key factors in determining the eating quality of hybrid rice. High-performance anion-exchange chromatography analyses showed that the proportion of amylopectin short chains (degree of polymerization 6-10) and intermediate chains (degree of polymerization 13-24), which might affect the gelatinisation enthalpy and crystallinity, also contributed greatly to the eating quality of hybrid rice. Moreover, this study indicated that a greater diversity of forms and sizes of starch granules might influence the eating quality of hybrid rice.
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Affiliation(s)
- Yan Peng
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China; College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Bigang Mao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China; Longping Graduate School, Hunan University, Changsha 410082, China
| | - Changquan Zhang
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Jiangsu Key Laboratory of Crop Genetics and Physiology, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, College of Agriculture, Yangzhou University, Yangzhou 225009, China
| | - Ye Shao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
| | - Tianhao Wu
- Longping Graduate School, Hunan University, Changsha 410082, China
| | - Liming Hu
- Longping Graduate School, Hunan University, Changsha 410082, China
| | - Yuanyi Hu
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
| | - Li Tang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
| | - Yaokui Li
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
| | - Wenbang Tang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China.
| | - Yinghui Xiao
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China.
| | - Bingran Zhao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China; College of Agronomy, Hunan Agricultural University, Changsha 410128, China.
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21
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Lv Q, Zhang X, Yuan D, Huang Z, Peng R, Peng J, Li Z, Tang L, Liu D, Zhou X, Wang L, Pan L, Shao Y, Mao B, Xin Y, Zhu L, Zhao B, Bai L. Exploring Natural Allelic Variations of the β-Triketone Herbicide Resistance Gene HIS1 for Application in indica Rice and Particularly in Two-Line Hybrid Rice. Rice (N Y) 2021; 14:7. [PMID: 33415497 PMCID: PMC7790941 DOI: 10.1186/s12284-020-00448-7] [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] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Benzobicyclon (BBC) is a β-triketone herbicide (bTH) used in rice paddy fields. It has the advantages of high efficiency, low toxicity, high crop safety, and good environmental compatibility, and shows efficacy against paddy weeds resistant to other types of herbicides. However, as some important indica rice varieties are susceptible to BBC, BBC is currently only registered and applied in japonica rice cultivation areas. RESULTS By analyzing haplotypes of the bTHs broad-spectrum resistance gene HIS1 and phenotypes for BBC in 493 major indica rice accessions in China, we identified a novel non-functional allelic variant of HIS1 in addition to the previously reported 28-bp deletion. Through detection with markers specific to the two non-functional mutations, it was clear that 25.4% of indica conventional varieties, 59.9% of fertility restorers, and 15.9% of sterile lines were susceptible to BBC. In addition, due to natural allelic variations of the HIS1 gene in the sterile and restorer lines, some two-line hybrid sterile lines were sensitive to bTHs, and the corresponding restorers were resistant. We showed the potential effectiveness of using bTHs to address the issue of two-line hybrid rice seed purity stemming from the self-crossing of sterile lines during hybrid rice seed production. Finally, allelic variations of the HIS1 gene may also play an important role in the mechanized seed production of hybrid rice. CONCLUSIONS Our findings offer guidance for the application of BBC in indica rice areas and provide a non-transgenic approach to address the seed purity issue of two-line hybrid rice.
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Affiliation(s)
- Qiming Lv
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China
- Longping Branch of Graduate School, Hunan University, Changsha, China
| | - Xiuli Zhang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China
- Longping Branch of Graduate School, Hunan University, Changsha, China
| | - Dingyang Yuan
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China
- Longping Branch of Graduate School, Hunan University, Changsha, China
| | - Zhiyuan Huang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China
| | - Rui Peng
- Rice Research Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Jiming Peng
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China
- Longping Branch of Graduate School, Hunan University, Changsha, China
| | - Zuren Li
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Li Tang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China
- Longping Branch of Graduate School, Hunan University, Changsha, China
| | - Ducai Liu
- Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Xiaomao Zhou
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Lifeng Wang
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Lang Pan
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Ye Shao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China
| | - Bigang Mao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China
- Longping Branch of Graduate School, Hunan University, Changsha, China
| | - Yeyun Xin
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China
- Longping Branch of Graduate School, Hunan University, Changsha, China
| | - Lihuang Zhu
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China.
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.
| | - Bingran Zhao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China.
- Longping Branch of Graduate School, Hunan University, Changsha, China.
| | - Lianyang Bai
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, China.
- Longping Branch of Graduate School, Hunan University, Changsha, China.
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, China.
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22
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LeMieux FM, Villemarette CP, Lyons EK, Shields TH, German N. Effect of hybrid rice varieties on growth and development of broilers and ducks. ACTA ACUST UNITED AC 2020; 7:127-133. [PMID: 33997340 PMCID: PMC8110872 DOI: 10.1016/j.aninu.2020.06.004] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/29/2020] [Accepted: 06/01/2020] [Indexed: 11/28/2022]
Abstract
Three experiments (Exp. 1, n = 144 broilers [Ross × Ross]; Exp. 2, n = 118 mallard ducklings [Anas platyrhynchos]; and Exp. 3, n = 75 mature mallard ducks) were conducted to determine the effects of 3 levels of unmilled hybrid rice on growth performance and organ and gastrointestinal tract development. The dietary treatments were 1) corn-soybean meal (basal), 2) basal + 5% hybrid rice, and 3) basal + 10% hybrid rice for Exp. 1 to 3, respectively. One bird from each pen in Exp. 1 (n = 24) and all the birds in Exp. 2 (n = 118) and Exp. 3 (n = 75) were randomly selected and euthanized to determine linear measurements and organ and gastrointestinal tract weight. In Exp. 1 and 2, birds fed 10% rice experienced slower growth (P < 0.05) than birds fed the basal diet. In Exp. 3, the addition of rice did not affect growth performance. Rice addition did not affect organ length or weight (P > 0.05) in Exp. 1. However, birds fed 5% rice had significantly increased (P < 0.05) pancreas, ileum, and jejunum weights in Exp. 2, and 10% rice significantly increased (P < 0.05) liver weight in Exp. 3. The addition of 10% unmilled rice to broiler and duck diets may reduce growth performance.
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Affiliation(s)
- Frederick M LeMieux
- School of Agricultural Sciences, McNeese State University, Lake Charles, LA, 70609, United States
| | - Courtney P Villemarette
- School of Agricultural Sciences, McNeese State University, Lake Charles, LA, 70609, United States
| | - Eddie K Lyons
- School of Agricultural Sciences, McNeese State University, Lake Charles, LA, 70609, United States
| | - Thomas H Shields
- School of Agricultural Sciences, McNeese State University, Lake Charles, LA, 70609, United States
| | - Norman German
- School of Agricultural Sciences, McNeese State University, Lake Charles, LA, 70609, United States
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23
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Wang Y, Yu Y, Huang M, Gao P, Chen H, Liu M, Chen Q, Yang Z, Sun Q. Transcriptomic and proteomic profiles of II YOU 838 ( Oryza sativa) provide insights into heat stress tolerance in hybrid rice. PeerJ 2020; 8:e8306. [PMID: 32117601 PMCID: PMC7039125 DOI: 10.7717/peerj.8306] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 08/06/2019] [Accepted: 11/27/2019] [Indexed: 01/01/2023] Open
Abstract
Heat stress is an increasing threat to rice production worldwide. To investigate the mechanisms of heat tolerance in hybrid rice and their contributions to rice heterosis, we compared the transcriptome of the hybrid rice II YOU 838 (II8) with the transcriptomes of its parents Fu Hui 838 (F8) and II-32A (II3) after heat stress at 42 °C for 0 h, 24 h, 72 h and 120 h. We also performed a proteomic analysis in II8 after heat stress at 42 °C for 24 h. The transcriptome data revealed time-dependent gene expression patterns under the heat stress conditions, and the heat stress response of II8 was greatly different from those of its parents. Gene ontology analysis of the differentially expressed genes that were clustered using k-means clustering showed that most of the up-regulated genes were involved in responses to stimuli, cell communication, and metabolic and transcription factor activities, whereas the down-regulated genes were enriched in photosynthesis and signal transduction. Moreover, 35 unique differentially abundant proteins, including a basic helix-loop-helix transcription factor (bHLH96), calmodulin-binding transcription activator, heat shock protein (Hsp70), and chaperonin 60 (CPN60), were detected in the proteomic analysis of II8 under heat stress. The co-regulatory analysis revealed novel genes and pathways involved in heat tolerance, namely, ferredoxin-NADP reductase, peroxidases, mitogen-activated protein kinase kinase kinase, and heat shock factor (HSF)-Hsp network. Members of the Hsp and HSF families had over-dominant expression patterns in the hybrid compared with its parents, to help maintain the higher photosynthesis and antioxidant defense systems in the hybrid. Our study suggests that the complex HSF-Hsp regulatory network contribute to the heat tolerance of the hybrid rice.
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Affiliation(s)
- Yan Wang
- Key Laboratory of Bio-resource and Bio-environment of the Ministry of Education, College of Life Science, Sichuan University, Chengdu, Sichuan, China.,Key Laboratory of Irradiation Preservation of Sichuan Province, Sichuan Institute of Atomic Energy, Chengdu, Sichuan, China
| | - Yang Yu
- Key Laboratory of Bio-resource and Bio-environment of the Ministry of Education, College of Life Science, Sichuan University, Chengdu, Sichuan, China
| | - Min Huang
- Key Laboratory of Irradiation Preservation of Sichuan Province, Sichuan Institute of Atomic Energy, Chengdu, Sichuan, China
| | - Peng Gao
- Key Laboratory of Irradiation Preservation of Sichuan Province, Sichuan Institute of Atomic Energy, Chengdu, Sichuan, China
| | - Hao Chen
- Key Laboratory of Irradiation Preservation of Sichuan Province, Sichuan Institute of Atomic Energy, Chengdu, Sichuan, China
| | - Mianxue Liu
- Key Laboratory of Irradiation Preservation of Sichuan Province, Sichuan Institute of Atomic Energy, Chengdu, Sichuan, China
| | - Qian Chen
- Key Laboratory of Irradiation Preservation of Sichuan Province, Sichuan Institute of Atomic Energy, Chengdu, Sichuan, China
| | - Zhirong Yang
- Key Laboratory of Bio-resource and Bio-environment of the Ministry of Education, College of Life Science, Sichuan University, Chengdu, Sichuan, China
| | - Qun Sun
- Key Laboratory of Bio-resource and Bio-environment of the Ministry of Education, College of Life Science, Sichuan University, Chengdu, Sichuan, China
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24
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Eltahawy MS, Ali N, Zaid IU, Li D, Abdulmajid D, Bux L, Wang H, Hong D. Association analysis between constructed SNPLDBs and GCA effects of 9 quality-related traits in parents of hybrid rice (Oryza sativa L.). BMC Genomics 2020; 21:31. [PMID: 31918652 PMCID: PMC6953305 DOI: 10.1186/s12864-019-6428-0] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 12/24/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The general combining ability (GCA) of parents in hybrid rice affects not only heterotic level of grain yield and other important agronomic traits, but also performance of grain quality traits of F2 bulk population which is the commodity consumed by humans. In order to make GCA improvement for quality traits in parents of hybrid rice by molecular marker assisted selection feasible, genome-wide GCA loci for quality traits in parents were detected through association analysis between the effects of GCA and constructed single nucleotide polymorphism linkage disequilibrium blocks (SNPLDBs), by using unhusked rice grains harvested from F1 plants of 48 crosses of Indica rice and 78 crosses of Japonica rice. GCA-SNPLDBs association analysis. RESULTS Among the 8 CMS and 6 restorer lines of indica rice subspecies, CMS lines Zhenpin A, Zhenshan97 A, and 257A, and restorers Kanghui98, Minghui63 and Yanhui559 were recognized as good general combiners based on their GCA effect values for the 9 quality traits (brown rice rate, milled rice rate, head rice rate, percentage of chalky grains, chalky area size, chalkiness degree, gelatinization temperature, gel consistency and amylose content). Among the 13 CMS and 6 restorer lines of japonica rice subspecies, CMS 863A, 6427A and Xu 2A, and restorers C418, Ninghui8hao and Yunhui4hao showed elite GCA effect values for the 9 traits. GCA-SNPLDB association analysis revealed 39 significant SNPLDB loci associated with the GCA of the 9 quality-related traits, and the numbers of SNPLDB loci located on chromosome 1, 2, 3, 4, 5, 8, 9, 11 and 12 were 1, 4, 3, 9, 6, 5, 5, 4 and 2, respectively. Number of superior GCA alleles for the 9 traits among the 33 parents ranged from 1 to 26. CONCLUSIONS Thirty-nine significant SNPLDBs loci were identified associated with the GCA of 9 quality-related traits, and the superior SNPLDB alleles could be used to improve the GCA of parents for the traits in the future by molecular marker assisted selection. The genetic basis of trait GCA in parents is different from that of trait itself.
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Affiliation(s)
- Moaz S Eltahawy
- Nanjing Agricultural University, Nanjing, 210095, China.,State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China.,Agronomy Department, Faculty of Agriculture, Zagazig University, Sharqia, 44519, Egypt
| | - Nour Ali
- Nanjing Agricultural University, Nanjing, 210095, China.,State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China.,Laboratory of Crop Genetics and Germplasm Enhancement, Field Crops Research Department, Agricultural Faculty, Damascus University, Damascus, Syria
| | - Imdad U Zaid
- Nanjing Agricultural University, Nanjing, 210095, China.,State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dalu Li
- Nanjing Agricultural University, Nanjing, 210095, China.,State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dina Abdulmajid
- Nanjing Agricultural University, Nanjing, 210095, China.,State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China.,Rice Research and Training Centre, Field Crops Research Institute, Agricultural Research Centre, Kafr El-Sheikh, 33717, Egypt
| | - Lal Bux
- Nanjing Agricultural University, Nanjing, 210095, China.,State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hui Wang
- Nanjing Agricultural University, Nanjing, 210095, China.,State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Delin Hong
- Nanjing Agricultural University, Nanjing, 210095, China. .,State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China.
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Toriyama K, Kazama T, Sato T, Fukuta Y, Oka M. Development of cytoplasmic male sterile lines and restorer lines of various elite Indica Group rice cultivars using CW-CMS/Rf17 system. Rice (N Y) 2019; 12:73. [PMID: 31535306 PMCID: PMC6751230 DOI: 10.1186/s12284-019-0332-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 09/10/2019] [Indexed: 05/26/2023]
Abstract
BACKGROUND A cytoplasm of CW-type cytoplasmic male sterile (CMS) line is derived from Oryza rufipogon strain W1 and fertility is restored by a single nuclear gene, Rf17. We have previously reported that CW-CMS were effective for breeding CMS lines of Indica Group rice cultivars, IR 24 and IR 64. The applicability of this CW-CMS/Rf17 system to produce other elite Indica Group rice cultivars with CMS was explored. FINDINGS Out of seven elite Indica Group rice cultivars, complete CMS lines were obtained for six cultivars: NSIC Rc 160, NSIC Rc 240, Ciherang, BRRI dhan 29, NERICA-L-19, and Pusa Basmati. The fertility of these six lines was restored when Rf17 was present. A CMS line was not obtained for the cultivar Samba Mahsuri. CONCLUSIONS The CW-CMS/Rf17 system will be useful to produce CMS lines and restorer lines of various elite Indica Group rice cultivars.
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Affiliation(s)
- Kinya Toriyama
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8572 Japan
| | - Tomohiko Kazama
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8572 Japan
| | - Tadashi Sato
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8572 Japan
| | - Yoshimichi Fukuta
- Tropical Agriculture Research Front, Japan International Research Center for Agricultural Sciences, Ishigaki, Okinawa, 907-0002 Japan
| | - Masaaki Oka
- Miyagi University of Education, 149, Aramaki-aza-Aoba, Aobaku, Sendai, Miyagi 980-0845 Japan
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26
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Kumar A, Singh VJ, Krishnan SG, Vinod KK, Bhowmick PK, Nagarajan M, Ellur RK, Bollinedi H, Singh AK. WA-CMS-based iso-cytoplasmic restorers derived from commercial rice hybrids reveal distinct population structure and genetic divergence towards restorer diversification. 3 Biotech 2019; 9:299. [PMID: 31355108 DOI: 10.1007/s13205-019-1824-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 07/01/2019] [Indexed: 12/27/2022] Open
Abstract
One hundred diverse iso-cytoplasmic restorer (ICR) lines carrying WA cytoplasm indicated significant but moderate variability for agro-morphological traits as well as for the microsatellite-based allele patterns. There were two major groups of ICRs based on agro-morphological clustering. Simple sequence repeat (SSR) markers identified allelic variants with an average of 2.48 alleles per locus and the gene diversity (GD) ranged from 0.02 to 0.62 at different loci. ICR lines showed a genetic structure involving two sub-populations, POP1 and POP2. Both the subpopulations had the presence of admixture lines. Nearest ancestry-based grouping of ICRs by neighbour-joining (NJ) method showed near similar grouping as that of sub-population division. The POP2 was the largest group but with fewer admixed lines. POP1 was more distinct than POP2. Since the hybrid parents of the ICRs had limited diversity on maternal lineage, paternal lineage was concluded as the major contributor to the observed divergence and population differentiation. ICRs developed from certain hybrids were more genetically distinct than other hybrids. Even with the moderate variability, ICRs could be considered as a potential source of fertility restoration in hybrid development because of their distinct population structure and the full complement of restorer genes they contained. ICR lines with high per se performance can be utilized in hybrid rice development by estimating their combining ability.
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Affiliation(s)
- Amit Kumar
- 1Division of Genetics, ICAR-Indian Agricultural Research Institute (ICAR-IARI), New Delhi, 110012 India
- Plant Breeding, ICAR-Research Complex for North Eastern Hill Region, Umiam, 793103 India
| | - Vikram Jeet Singh
- 1Division of Genetics, ICAR-Indian Agricultural Research Institute (ICAR-IARI), New Delhi, 110012 India
| | - S Gopala Krishnan
- 1Division of Genetics, ICAR-Indian Agricultural Research Institute (ICAR-IARI), New Delhi, 110012 India
| | - K K Vinod
- Rice Breeding and Genetics Research Centre, ICAR-IARI, Aduthurai, 612101 India
| | - Prolay Kumar Bhowmick
- 1Division of Genetics, ICAR-Indian Agricultural Research Institute (ICAR-IARI), New Delhi, 110012 India
| | - M Nagarajan
- Rice Breeding and Genetics Research Centre, ICAR-IARI, Aduthurai, 612101 India
| | - Ranjith Kumar Ellur
- 1Division of Genetics, ICAR-Indian Agricultural Research Institute (ICAR-IARI), New Delhi, 110012 India
| | - Haritha Bollinedi
- 1Division of Genetics, ICAR-Indian Agricultural Research Institute (ICAR-IARI), New Delhi, 110012 India
| | - Ashok Kumar Singh
- 1Division of Genetics, ICAR-Indian Agricultural Research Institute (ICAR-IARI), New Delhi, 110012 India
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27
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Pranathi K, Kalyani MB, Viraktamath BC, Balachandran SM, Hajira SK, Koteshwar Rao P, Kulakarni SR, Rekha G, Anila M, Koushik MBVN, Senguttuvel P, Hariprasad AS, Mangrautia SK, Madhav MS, Sundaram RM. Expression profiling of immature florets of IR58025A, a wild-abortive cytoplasmic male sterile line of rice and its cognate, isonuclear maintainer line, IR58025B. 3 Biotech 2019; 9:278. [PMID: 31245242 PMCID: PMC6588665 DOI: 10.1007/s13205-019-1806-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 06/10/2019] [Indexed: 11/25/2022] Open
Abstract
Interaction between gene products encoded by the cytoplasm and nucleus form the core of wild abortive cytoplasmic male sterile (WA-CMS) system of hybrid breeding in rice. Gaining insights into such interactions can be helpful in the development of better three-line rice hybrids and also identify novel male sterility systems. In the present study, the whole transcriptome profiles of immature florets of IR58025A, a WA-CMS line and its isonuclear maintainer line, IR58025B, collected at pre-anthesis stage were compared to delineate the pathways involved in pollen abortion and male sterility. Among the 774 differentially expressed transcripts (DETs), 496 were down regulated and 278 were up regulated in IR58025A compared to IR58025B. The genes associated with oxidative stress response, defense response, etc. were significantly up-regulated, while those associated with respiration, cell wall modifications, pectinesterase activity, etc. were significantly down-regulated in the WA-CMS line. Gene ontology and pathway enrichment analyses revealed the down-regulation of both nuclear and organellar genes involved in key metabolic processes of cell respiration, photosynthesis and other energy yielding metabolites in IR58025A, relative to IR58025B, indicating a general shift toward conservation of energy and other key resources in the florets of WA-CMS line. The data derived from RNA-Seq analysis were validated through qRT-PCR analysis. Based on the results obtained, it can be hypothesized that pollen abortion principally occurs due to up-regulation of pathways leading to oxidative stress leading to energy starvation conditions in consonance with reduced expression of genes associated with the cell wall formation, respiration, and other key metabolic processes.
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Affiliation(s)
- K. Pranathi
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | - M. B. Kalyani
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | - B. C. Viraktamath
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | | | - S. K. Hajira
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | - P. Koteshwar Rao
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | - S. R. Kulakarni
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | - G. Rekha
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | - M. Anila
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | | | - P. Senguttuvel
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | - A. S. Hariprasad
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | - S. K. Mangrautia
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | - M. S. Madhav
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
| | - R. M. Sundaram
- ICAR-Indian Institute of Rice Research (IIRR), Hyderabad, 500030 India
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28
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Xia Y, Tang N, Hu Y, Li D, Li S, Bu X, Yu M, Qi S, Yang Y, Zhu H, Cao C, Li P, Yuan L, Cao M. A method for mechanized hybrid rice seed production using female sterile rice. Rice (N Y) 2019; 12:39. [PMID: 31140005 PMCID: PMC6538728 DOI: 10.1186/s12284-019-0296-8] [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] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 05/14/2019] [Indexed: 05/16/2023]
Abstract
BACKGROUND The breeding and large-scale adoption of hybrid rice is an important achievement in modern agriculture. Mechanized seed production is urgently needed for widespread adoption of hybrid rice because it can compensate for the shortage of manual labor to meet the growing food demands in China. RESULTS Here, we report the development of a mechanized hybrid rice seed production method using a female sterile rice. In this method, three closely linked gene expression cassettes were introduced into female sterile rice. The three expression cassettes are: 1) a rice female fertility gene expression cassette; 2) a pollen-lethal gene expression cassette; and 3) a red fluorescence protein gene expression cassette. During the self-fertilization process of a heterozygous transgenic rice plant, pollen grains carrying the transgene die off and cannot participate in fertilization; pollen grains not carrying a transgene can normally fertilize the female gamete, leading to fructification. By means of fluorescence-assisted sorting, homogeneous female sterile rice seeds are sorted out from other seeds carrying the transgene and are used for mechanized hybrid rice seed production; heterozygous seeds carrying the transgene can then be used in the multiplication of female sterile rice. CONCLUSIONS This technology solves the difficulty of multiplying female-sterile rice, allows for mechanized production of hybrid rice seed, and will prove especially valuable in systems using a mixed-planting, mixed-harvesting approach. Moreover, it uses transgenic technology that has not yet been employed in a seed production process in which the output is non-transgenic seeds.
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Affiliation(s)
- Yumei Xia
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Ning Tang
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Yuanyi Hu
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Ding Li
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China
- Collaborative Innovation Center, Hunan Agriculture University, Changsha, 410128, China
- Department of Biotechnology, Hunan Key Laboratory of Green Packaging and Application of Biological Nanotechnology, Hunan University of Technology, Zhuzhou, 412007, China
| | - Shuangcheng Li
- Rice Research Institute, Sichuan Agricultural University, Chendu, 611130, China
| | - Xiaolan Bu
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Mulan Yu
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Shaowu Qi
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Yishan Yang
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Hongjin Zhu
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Chenying Cao
- Rice Research Institute, Sichuan Agricultural University, Chendu, 611130, China
| | - Ping Li
- Rice Research Institute, Sichuan Agricultural University, Chendu, 611130, China
| | - Longping Yuan
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Mengliang Cao
- State Key Laboratory of Hybrid Rice, Longping Graduate School, Hunan University , Changsha, 410082, China/ Hunan Hybrid Rice Research Center, Changsha, 410125, China.
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha, China.
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29
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Wang S, Tian Q, Zhou S, Mao D, Chen L. A quantitative proteomic analysis of the molecular mechanism underlying fertility conversion in thermo-sensitive genetic male sterility line AnnongS-1. BMC Plant Biol 2019; 19:65. [PMID: 30744566 PMCID: PMC6371510 DOI: 10.1186/s12870-019-1666-5] [Citation(s) in RCA: 5] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 01/29/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Thermo-sensitive genetic male sterile (TGMS) lines have been widely used in two-line hybrid rice breeding. The two-line hybrids have increased rice yields substantially. However, the effect of environmental temperatures on the fertility conversion is still not fully clear. In this study, we performed a tandem mass tag (TMT)-based proteomic analysis on the anthers of the TGMS line AnnongS-1 grown under permissive (low) temperature (21 °C) and restrictive (high) temperature (> 26 °C) conditions in an attempt to explore the effect of temperature on the fertility of the male sterile line. RESULTS After the AnnongS-1 plants were induced under either permissive or restrictive conditions, morphological observations and I2-KI staining confirmed that the pollen grains formed under high temperature conditions were abortive while those formed under low temperature developed normally. In comparison to the plants grown under permissive conditions, the restrictive high-temperature conditions led to the differential accumulation of 89 proteins in the anthers, of which 46 were increased in abundance and 43 were decreased in abundance. Most of the subcellular compartments of the anther cells had one or more proteins that had been differentially accumulated, with the cytoplasm and chloroplast having the greatest accumulations. More than 40% of the differentially abundant proteins (DAPs) were enzymes involved in photosynthesis, energy metabolism, biosynthesis and catabolism of cellular components, metabolic regulation, defense and stress, etc. The DAPs related to protein metabolism accounted for the largest proportion (21.35%), followed by those related to defense and stress (12.36%), metabolic regulation (10.11%) and carbohydrate metabolism (8.99%), indicating that such biological processes in anther cells were more susceptible to high temperature stress. CONCLUSIONS The restrictive temperature induction caused fertility-sterility conversion in the TGMS line AnnongS-1 mainly by adversely affecting the metabolism of protein, carbohydrate and energy, and decreasing the abundances of important proteins closely related to defense and stress, thereby impeding the growth and development of the pollen and weakening the overall defense and ability to endure stress of AnnongS-1. These data are helpful for deepening our understanding of the molecular mechanism underlying fertility conversion in TGMS lines.
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Affiliation(s)
- Siyao Wang
- College of Life Science, Hunan Normal University, Changsha, 410081 Hunan China
| | - Qingyuan Tian
- College of Life Science, Hunan Normal University, Changsha, 410081 Hunan China
| | - Shiqi Zhou
- College of Life Science, Hunan Normal University, Changsha, 410081 Hunan China
| | - Dandan Mao
- College of Life Science, Hunan Normal University, Changsha, 410081 Hunan China
| | - Liangbi Chen
- College of Life Science, Hunan Normal University, Changsha, 410081 Hunan China
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30
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Tan Y, Sun X, Fang B, Yu D, Sun Z, Wang W, Sheng X, Yin X, Liu L, Zhang Y, Duan M, Yuan D. Conversion of a rice CMS maintainer into a photo- or thermo-sensitive genetic male sterile line. Mol Breed 2018; 38:56. [PMID: 29681763 PMCID: PMC5906493 DOI: 10.1007/s11032-018-0805-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 03/14/2018] [Indexed: 06/08/2023]
Abstract
A maintainer line of 3-line hybrid rice commonly presents a certain genetic distance to a 2-line restorer line, but in many cases, 2-line restorer lines present defects upon recovery of the object cytoplasmic male sterile (CMS) line of the maintainer line, which impedes the utilization of their heterosis. Here, we report a strategy and an example of converting a maintainer into a photoperiod/temperature-sensitive genic male sterile (P/TGMS) line with an almost identical genetic background, thus maximizing the heterosis. Firstly, through treatment of maintainer line T98B with 60CO-γ irradiation, we identified the TGMS line T98S, which is sterile at higher temperatures and fertile at lower temperatures. Secondly, the T98S line was proven to be identical to T98B with regard to genetic background via an examination of 48 parental polymorphous SSR markers and exhibited excellent blossom traits similar to those of T98B, with an extensive forenoon flowering rate of 75.92% and a high exertion rate of 64.59%. Thirdly, in a combination test, three out of six hybrids from T98S crossed with 2-line restorer lines showed a yield increase of 6.70-15.69% for 2 consecutive years. These results demonstrated that the strategy can generate a new P/TGMS line with strong general combining ability (converted from a maintainer line), thus helping to increase the genetic diversity of male sterile heterotic groups.
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Affiliation(s)
- Yanning Tan
- State key Laboratory of Hybrid rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
- Hunan Academy of Agricultural sciences, Changsha, 410125 China
| | - Xuewu Sun
- State key Laboratory of Hybrid rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
- Hunan Academy of Agricultural sciences, Changsha, 410125 China
| | - Baohua Fang
- Hunan Rice Research Institute, Changsha, 410125 China
| | - Dong Yu
- State key Laboratory of Hybrid rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
- Hunan Academy of Agricultural sciences, Changsha, 410125 China
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128 China
| | - Zhizhong Sun
- State key Laboratory of Hybrid rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
- Hunan Academy of Agricultural sciences, Changsha, 410125 China
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128 China
| | - Weiping Wang
- State key Laboratory of Hybrid rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
- Hunan Academy of Agricultural sciences, Changsha, 410125 China
| | - Xiabing Sheng
- State key Laboratory of Hybrid rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
- Hunan Academy of Agricultural sciences, Changsha, 410125 China
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128 China
| | - Xiaolin Yin
- Longping Branch of Graduate School, Hunan University, Changsha, 410125 China
| | - Ling Liu
- Longping Branch of Graduate School, Hunan University, Changsha, 410125 China
| | - Yongfei Zhang
- Hunan agricultural Biotechnology Research Center, Changsha, 410125 China
| | - Meijuan Duan
- State key Laboratory of Hybrid rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128 China
| | - Dingyang Yuan
- State key Laboratory of Hybrid rice, Hunan Hybrid Rice Research Center, Changsha, 410125 China
- Hunan Academy of Agricultural sciences, Changsha, 410125 China
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128 China
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31
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Abstract
Hybrid rice has been successfully used for commercial rice production for 40 years in China. Shanyou 63, a mega rice hybrid, derived from the parents Zhenshan 97A and Minghui 63, was a milestone for China's hybrid rice development and production because of its high yield and wide adaptability. It was planted in 16 provinces of the country on 17% of the national hybrid rice area annually during the 29 years from 1984 to 2012. The hybrid and its parents have also been widely used for basic and agronomic studies related to rice heterosis, stress tolerance, molecular markers and genomics. We review the development of the hybrid and its parents and their major characteristics for the purpose of learning from the history and guiding future hybrid rice development. The history and development experience show that a successful hybrid rice variety should have multiple traits, including high yield, wide adaptability, resistances to major diseases, and high rice quality that meets the demands of consumers. From the breeding aspect, hybrid rice provides the advantage of combining elite traits or genes from different types of parents, such as those from subspecies of indica and japonica, into a single variety. Farmers prefer not only a variety with high yield potential, but also stable yields and local adaptability.
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Affiliation(s)
- Fangming Xie
- Yuan Longping High-Tech Agriculture Co. Ltd., Changsha, 410001 Hunan China
| | - Jianfu Zhang
- Rice Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350018 China
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32
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Huang M, Jiang P, Shan S, Gao W, Ma G, Zou Y, Uphoff N, Yuan L. Higher yields of hybrid rice do not depend on nitrogen fertilization under moderate to high soil fertility conditions. Rice (N Y) 2017; 10:43. [PMID: 28936774 PMCID: PMC5608657 DOI: 10.1186/s12284-017-0182-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Accepted: 09/18/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Increasing rice yield with fewer external inputs is critical to ensuring food security, reducing environmental costs, and improving returns. Use of hybrid rice has expanded greatly in China due to its higher yield potential. Meanwhile, large and increasing amounts of nitrogen (N) fertilizers have been used for expanding rice production in China. It is not clear to what extent the success of hybrid rice in China is associated with N fertilizer inputs. FINDINGS We observed that the higher grain yield with N fertilizer in hybrid rice was driven more by a higher yield without N fertilizer than by increases in grain yield with N fertilizer under moderate to high soil fertility conditions. CONCLUSIONS Our results suggest that greater application of N fertilizers is not needed to benefit from hybrid rice production under moderate to high soil fertility conditions, and that improving and maintaining soil fertility should be a focus for sustaining hybrid rice production. Moreover, our study also indicates that zero-N testing may be a potentially useful tool to develop hybrid rice with high yield and without requirement of greater external N inputs under moderate to high soil fertility conditions.
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Affiliation(s)
- Min Huang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128, China.
- International Programs-College of Agriculture and Life Sciences (IP-CALS), Cornell University, Ithaca, 14853, USA.
| | - Peng Jiang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128, China
| | - Shuanglü Shan
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128, China
| | - Wei Gao
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128, China
| | - Guohui Ma
- State Key Laboratory of Hybrid Rice, China National Hybrid Rice Research and Development Center, Changsha, 410125, China
| | - Yingbin Zou
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128, China
| | - Norman Uphoff
- International Programs-College of Agriculture and Life Sciences (IP-CALS), Cornell University, Ithaca, 14853, USA
| | - Longping Yuan
- State Key Laboratory of Hybrid Rice, China National Hybrid Rice Research and Development Center, Changsha, 410125, China
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33
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Schmalzer S. Yuan Longping, Hybrid Rice, and the Meaning of Science in the Cultural Revolution and Beyond. Endeavour 2017; 41:94-101. [PMID: 28655403 DOI: 10.1016/j.endeavour.2017.06.006] [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] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 06/12/2017] [Indexed: 06/07/2023]
Abstract
This paper uses the case of hybrid rice to chart changes in the meanings science has carried in China from the Mao era to today. It begins by using Chinese journal articles to reconstruct the 1970s development of hybrid rice technology by a network of diverse historical actors. It then documents the emergence during the Hua Guofeng era (1976-1978) of a historical narrative of hybrid rice centered on the figures of Yuan Longping and Hua Guofeng. Finally, it surveys post-1978 biographies of Yuan Longping to identify changes and continuities in scientific values. The paper demonstrates that, although the reform era has witnessed the replacement of most of the Maoist vision of mass (or tu) science with a vision far more consistent with the values of international, professional (yang) science, the legacy of the Mao era can still be seen in a continued emphasis on certain aspects of Mao Zedong Thought, a strong narrative of nationalist triumphalism, and a celebration of Yuan Longping as an "intellectual peasant."
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Ye S, Yang W, Zhai R, Lu Y, Wang J, Zhang X. Mapping and application of the twin-grain1 gene in rice. Planta 2017; 245:707-716. [PMID: 27999987 DOI: 10.1007/s00425-016-2627-y] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 11/28/2016] [Indexed: 06/06/2023]
Abstract
The map-based cloning and application of a flower organ number gene twin - grain1 provide great potential for improving seed production in hybrid rice. A new germplasm for high-yield rice breeding, the twin-grain1 (tg1) mutant with more than one grain in a glume, was obtained from the Zhejing 22 rice variety via physical mutagenesis. The mapping results showed that TG1 is allelic to FLORAL ORGAN NUMBER2 (FON2)/FLORAL ORGAN NUMBER4 (FON4), a flower organ number gene located at 88.7 cM on chromosome 11. The novel tg1 gene allele was introgressed into the cytoplasmic male sterility (CMS) line Zhejing 22A, giving rise to a new CMS line Zhejing 22-tg1A. The Zhejing 22-tg1A line showed enhanced glume opening and stigma exsertion, which increased the outcrossing rate in hybrid rice. A small-scale hybrid rice seed production test demonstrated that the grain yield of the Zhejing 22-tg1A/Zhejinghui 5 line was significantly increased compared to that of the Zhejing 22A/Zhejinghui 5 line. The plot yield evaluation of the F1 hybrid lines showed a higher yield for the Zhejing 22-tg1A/Zhejinghui 5 line than that of the Zhejing 22A/Zhejinghui 5 line. The results implied great potentials for the tg1 gene in hybrid rice breeding.
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Affiliation(s)
- Shenghai Ye
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Weibing Yang
- Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Rongrong Zhai
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Yanting Lu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Junmei Wang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Xiaoming Zhang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China.
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Toriyama K, Kazama T. Development of Cytoplasmic Male Sterile IR24 and IR64 Using CW-CMS/Rf17 System. Rice (N Y) 2016; 9:22. [PMID: 27167516 PMCID: PMC4864779 DOI: 10.1186/s12284-016-0097-2] [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] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 05/04/2016] [Indexed: 05/10/2023]
Abstract
BACKGROUND A wild-abortive-type (WA) cytoplasmic male sterility (CMS) has been almost exclusively used for breeding three-line hybrid rice. Many indica cultivars are known to carry restorer genes for WA-CMS lines and cannot be used as maintainer lines. Especially elite indica cultivars IR24 and IR64 are known to be restorer lines for WA-CMS lines, and are used as male parents for hybrid seed production. If we develop CMS IR24 and CMS IR64, the combination of F1 pairs in hybrid rice breeding programs will be greatly broadened. FINDINGS For production of CMS lines and restorer lines of IR24 and IR64, we employed Chinese wild rice (CW)-type CMS/Restorer of fertility 17 (Rf17) system, in which fertility is restored by a single nuclear gene, Rf17. Successive backcrossing and marker-assisted selection of Rf17 succeeded to produce completely male sterile CMS lines and fully restored restorer lines of IR24 and IR64. CW-cytoplasm did not affect agronomic characteristics. CONCLUSIONS Since IR64 is one of the most popular mega-varieties and used for breeding of many modern varieties, the CW-CMS line of IR64 will be useful for hybrid rice breeding.
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Affiliation(s)
- Kinya Toriyama
- Graduate School of Agricultural Science, Tohoku University, Sendai, 981-8555, Japan.
| | - Tomohiko Kazama
- Graduate School of Agricultural Science, Tohoku University, Sendai, 981-8555, Japan
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Jiang P, Xie X, Huang M, Zhou X, Zhang R, Chen J, Wu D, Xia B, Xiong H, Xu F, Zou Y. Potential Yield Increase of Hybrid Rice at Five Locations in Southern China. Rice (N Y) 2016; 9:11. [PMID: 26984118 PMCID: PMC4794477 DOI: 10.1186/s12284-016-0085-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 03/12/2016] [Indexed: 05/17/2023]
Abstract
BACKGROUND A number of field studies have demonstrated that the yield potential of hybrid rice cultivars is higher than that of inbred cultivars, although the magnitude of difference between hybrid and inbred cultivars at different yield levels has not been described. The objective of this study is to compare the yield increase potential at different yield levels between hybrid and conventional rice. Ten field experiments were conducted at five locations in southern China in 2012 and 2013. At each location, two hybrid and two inbred cultivars were grown at three N levels: high (225 kg/hm(2)), moderate (161-191 kg/hm(2)) and the control, zero N (0 kg/hm(2)). RESULTS Hybrid rice yielded approximately 8 % more grain than did inbred cultivars in Huaiji, Binyang and Haikou; approximately 7 % more in Changsha; and approximately 19 % more in Xingyi. The high grain yields observed for hybrid rice cultivars were attributed to high grain weight and biomass accumulation at maturity. On average, rice yields were approximately 6.0-7.5 t ha(-1) (medium yield) in Huaiji, Binyang and Haikou; approximately 9.0 t ha(-1) in Changsha (high yield); and approximately 12.0 t ha(-1) (super high yield) in Xingyi. The yield gaps among Huaiji, Binyang and Haikou and Changsha were attributed to the differences in spikelets m(-2) and biomass production, whereas the yield gap between Changsha and Xingyi was caused by the differences in grain-filling percentage, grain weight and harvest index. The differences in biomass production among sites were primarily due to variation in crop growth rate induced by varied temperatures and accumulative solar radiation. CONCLUSIONS The yield superiority of hybrid rice was relatively small in comparison with that of inbred cultivars at medium and high yield levels, but the difference was large at super high yield levels. Improving rice yields from medium to high should focus on spikelets m(-2) and biomass, whereas further improvement to super high level should emphasize on grain-filling percentage, grain weight and harvest index. Favorable environmental conditions are essential for high yields in hybrid rice.
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Affiliation(s)
- Peng Jiang
- />Rice and Sorghum Research Institute, Sichuan Academy of Agricultural Sciences/Key Laboratory of Southwest Rice Biology and Genetic Breeding, Ministry of Agriculture, Deyang, 618000 China
- />Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128 China
- />Luzhou Branch of National Rice Improvement Center, Luzhou, 646100 China
| | - Xiaobing Xie
- />Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128 China
| | - Min Huang
- />Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128 China
| | - Xuefeng Zhou
- />Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128 China
| | - Ruichun Zhang
- />Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128 China
| | - Jiana Chen
- />Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128 China
| | - Dandan Wu
- />Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128 China
| | - Bing Xia
- />Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128 China
| | - Hong Xiong
- />Rice and Sorghum Research Institute, Sichuan Academy of Agricultural Sciences/Key Laboratory of Southwest Rice Biology and Genetic Breeding, Ministry of Agriculture, Deyang, 618000 China
- />Luzhou Branch of National Rice Improvement Center, Luzhou, 646100 China
| | - Fuxian Xu
- />Rice and Sorghum Research Institute, Sichuan Academy of Agricultural Sciences/Key Laboratory of Southwest Rice Biology and Genetic Breeding, Ministry of Agriculture, Deyang, 618000 China
- />Luzhou Branch of National Rice Improvement Center, Luzhou, 646100 China
| | - Yingbin Zou
- />Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, 410128 China
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Bora A, Choudhury PR, Pande V, Mandal AB. Assessment of genetic purity in rice (Oryza sativa L.) hybrids using microsatellite markers. 3 Biotech 2016; 6:50. [PMID: 28330120 PMCID: PMC4746197 DOI: 10.1007/s13205-015-0337-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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: 04/09/2015] [Accepted: 07/18/2015] [Indexed: 11/28/2022] Open
Abstract
The objective of the present study is to detect genetic impurity in the seed lots of CMS lines, restorers and hybrids and to identify signature markers to differentiate parents and hybrids through DNA-based assays. Furthermore, attempts have been made to find out an alternative to Grow-Out-Test, which is very tedious, time consuming and used conventionally for seed genetic purity testing since beginning of quality seed multiplication chain. Fifty-one rice-specific sequence tagged microsatellite (STMS) primer pairs distributed throughout the rice genome were employed for fingerprinting of eight rice hybrids and their parental lines with a view to assess variation within parental lines and to test the genetic purity of the commercial seed lots. Among those, 51 markers, 28 microsatellite markers showed polymorphism (54.90 %). A total of 98 alleles were obtained with an average of 1.92 alleles per primer pair and number of alleles amplified for each primer pair ranged from 1 to 4. A set of markers were identified to differentiate parental lines of the hybrids and which emphasizes the immense scope of those molecular markers for their use in the unambiguous identification of hybrid, which would be of great benefit to farmers that depend on the hybrids.
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Affiliation(s)
- Anjana Bora
- Directorate of Seed Research, Indian Council of Agricultural Research, Mau, 275101, Uttar Pradesh, India
- Department of Biotechnology, Kumaun University, Bhimtal Campus, Nainital, 263136, Uttarakhand, India
| | - Partha Ray Choudhury
- Directorate of Seed Research, Indian Council of Agricultural Research, Mau, 275101, Uttar Pradesh, India
| | - Veena Pande
- Department of Biotechnology, Kumaun University, Bhimtal Campus, Nainital, 263136, Uttarakhand, India
| | - Asit B Mandal
- Directorate of Seed Research, Indian Council of Agricultural Research, Mau, 275101, Uttar Pradesh, India.
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