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Sun Y, Yang H, Ren T, Zhao J, Lang X, Nie L, Zhao W. CmERF1 acts as a positive regulator of fruits and leaves growth in melon (Cucumis melo L.). PLANT MOLECULAR BIOLOGY 2024; 114:70. [PMID: 38842600 DOI: 10.1007/s11103-024-01468-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 05/14/2024] [Indexed: 06/07/2024]
Abstract
Melon (Cucumis melo L.) is an important horticultural and economic crop. ETHYLENE RESPONSE FACTOR1 (ERF1) plays an important role in regulating plant development, and the resistance to multiple biotic and abiotic stresses. In this study, developmental biology, molecular biology and biochemical assays were performed to explore the biological function of CmERF1 in melon. Abundant transcripts of CmERF1 were found in ovary at green-yellow bud (GYB) and rapid enlargement (ORE) stages. In CmERF1 promoter, the cis-regulatory elements for indoleacetic acid (IAA), methyl jasmonate (MeJA), salicylic acid (SA), abscisic acid (ABA), gibberellic acid (GA), light and low temperature responses were found. CmERF1 could be significantly induced by ethylene, IAA, MeJA, SA, ABA, and respond to continuous light and low temperature stresses in melon. Ectopic expression of CmERF1 increased the length of siliqua and carpopodium, and expanded the size of leaves in Arabidopsis. Knockdown of CmERF1 led to smaller ovary at anthesis, mature fruit and leaves in melon. In CmERF1-RNAi #2 plants, 75 genes were differently expressed compared with control, and the promoter regions of 28 differential expression genes (DEGs) contained the GCC-box (AGCCGCC) or DRE (A/GCCGAC) cis-acting elements of CmERF1. A homolog of cell division cycle protein 48 (CmCDC48) was proved to be the direct target of CmERF1 by the yeast one-hybrid assay and dual-luciferase (LUC) reporter (DLR) system. These results indicated that CmERF1 was able to promote the growth of fruits and leaves, and involved in multiple hormones and environmental signaling pathways in melon.
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Affiliation(s)
- Yufan Sun
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071000, China
| | - Haiming Yang
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071000, China
| | - Tiantian Ren
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071000, China
| | - Jiateng Zhao
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071000, China
| | - Xinmei Lang
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071000, China
| | - Lanchun Nie
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071000, China.
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, Hebei, 071000, China.
- Ministry of Education of China-Hebei Province Joint Innovation Center for Efficient Green Vegetable Industry, Baoding, Hebei, 071000, China.
| | - Wensheng Zhao
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071000, China.
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, Hebei, 071000, China.
- Ministry of Education of China-Hebei Province Joint Innovation Center for Efficient Green Vegetable Industry, Baoding, Hebei, 071000, China.
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Hu D, Zhao Y, Zhu L, Li X, Zhang J, Cui X, Li W, Hao D, Yang Z, Wu F, Dong S, Su X, Huang F, Yu D. Genetic dissection of ten photosynthesis-related traits based on InDel- and SNP-GWAS in soybean. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2024; 137:96. [PMID: 38589730 DOI: 10.1007/s00122-024-04607-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 03/21/2024] [Indexed: 04/10/2024]
Abstract
KEY MESSAGE A total of 416 InDels and 112 SNPs were significantly associated with soybean photosynthesis-related traits. GmIWS1 and GmCDC48 might be related to chlorophyll fluorescence and gas-exchange parameters, respectively. Photosynthesis is one of the main factors determining crop yield. A better understanding of the genetic architecture for photosynthesis is of great significance for soybean yield improvement. Our previous studies identified 5,410,112 single nucleotide polymorphisms (SNPs) from the resequencing data of 219 natural soybean accessions. Here, we identified 634,106 insertions and deletions (InDels) from these 219 accessions and used these InDel variations to perform principal component and linkage disequilibrium analysis of this population. The genome-wide association study (GWAS) were conducted on six chlorophyll fluorescence parameters (chlorophyll content, light energy absorbed per reaction center, quantum yield for electron transport, probability that a trapped exciton moves an electron into the electron transport chain beyond primary quinone acceptor, maximum quantum yield of photosystem II primary photochemistry in the dark-adapted state, performance index on absorption basis) and four gas-exchange parameters (intercellular carbon dioxide concentration, stomatal conductance, net photosynthesis rate, transpiration rate) and revealed 416 significant InDels and 112 significant SNPs. Based on GWAS results, GmIWS1 (encoding a transcription elongation factor) and GmCDC48 (encoding a cell division cycle protein) with the highest expression in the mapping region were determined as the candidate genes responsible for chlorophyll fluorescence and gas-exchange parameters, respectively. Further identification of favorable haplotypes with higher photosynthesis, seed weight and seed yield were carried out for GmIWS1 and GmCDC48. Overall, this study revealed the natural variations and candidate genes underlying the photosynthesis-related traits based on abundant phenotypic and genetic data, providing valuable insights into the genetic mechanisms controlling photosynthesis and yield in soybean.
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Affiliation(s)
- Dezhou Hu
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yajun Zhao
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lixun Zhu
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiao Li
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jinyu Zhang
- Henan Collaborative Innovation Center of Modern Biological Breeding, School of Agriculture, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Xuan Cui
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wenlong Li
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Derong Hao
- Jiangsu Yanjiang Institute of Agricultural Sciences, Nantong, 226012, China
| | - Zhongyi Yang
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Fei Wu
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shupeng Dong
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiaoyue Su
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Fang Huang
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Deyue Yu
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
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Yin W, Huang Z, Zhong Q, Tang L, Wu R, Li S, Mao Y, Zhu X, Wang C, Rao Y, Wang Y. The Mining of Genetic Loci and the Analysis of Candidate Genes to Identify the Physical and Chemical Markers of Anti-Senescence in Rice. PLANTS (BASEL, SWITZERLAND) 2023; 12:3812. [PMID: 38005709 PMCID: PMC10674301 DOI: 10.3390/plants12223812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/02/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023]
Abstract
Premature senescence is a common occurrence in rice production, and seriously affects rice plants' nutrient utilization and growth. A total of 120 recombinant inbred lines (RILs) were obtained from successive self-crossing of F12 generations derived from Huazhan and Nekken2. The superoxide dismutase (SOD) activity, malondialdehyde (MDA), content and catalase (CAT) activity related to the anti-senescence traits and enzyme activity index of rice were measured for QTL mapping using 4858 SNPs. Thirteen QTLs related to anti-senescence were found, among which the highest LOD score was 5.70. Eighteen anti-senescence-related genes were found in these regions, and ten of them differed significantly between the parents. It was inferred that LOC_Os01g61500, LOC_Os01g61810, and LOC_Os04g40130 became involved in the regulation of the anti-senescence molecular network upon upregulation of their expression levels. The identified anti-senescence-related QTLs and candidate genes provide a genetic basis for further research on the mechanism of the molecular network that regulates premature senescence.
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Affiliation(s)
- Wenjing Yin
- National Key Laboratory of Rice Biological Breeding, China National Rice Research Institute, Hangzhou 310006, China; (W.Y.); (S.L.); (Y.M.); (X.Z.)
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (Q.Z.); (L.T.); (R.W.)
| | - Zhao Huang
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (Q.Z.); (L.T.); (R.W.)
| | - Qianqian Zhong
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (Q.Z.); (L.T.); (R.W.)
| | - Luyao Tang
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (Q.Z.); (L.T.); (R.W.)
| | - Richeng Wu
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (Q.Z.); (L.T.); (R.W.)
| | - Sanfeng Li
- National Key Laboratory of Rice Biological Breeding, China National Rice Research Institute, Hangzhou 310006, China; (W.Y.); (S.L.); (Y.M.); (X.Z.)
| | - Yijian Mao
- National Key Laboratory of Rice Biological Breeding, China National Rice Research Institute, Hangzhou 310006, China; (W.Y.); (S.L.); (Y.M.); (X.Z.)
| | - Xudong Zhu
- National Key Laboratory of Rice Biological Breeding, China National Rice Research Institute, Hangzhou 310006, China; (W.Y.); (S.L.); (Y.M.); (X.Z.)
| | - Changchun Wang
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (Q.Z.); (L.T.); (R.W.)
| | - Yuchun Rao
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (Q.Z.); (L.T.); (R.W.)
| | - Yuexing Wang
- National Key Laboratory of Rice Biological Breeding, China National Rice Research Institute, Hangzhou 310006, China; (W.Y.); (S.L.); (Y.M.); (X.Z.)
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Lu J, Sun L, Jin X, Islam MA, Guo F, Tang X, Zhao K, Hao H, Li N, Zhang W, Shi Y, Wang S, Sun D. Analysis of Physiological and Transcriptomic Differences between a Premature Senescence Mutant (GSm) and Its Wild-Type in Common Wheat (Triticum aestivum L.). BIOLOGY 2022; 11:biology11060904. [PMID: 35741425 PMCID: PMC9219967 DOI: 10.3390/biology11060904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/09/2022] [Accepted: 06/10/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary Early leaf senescence is an important agronomic trait that affects crop yield and quality. To understand the molecular mechanism of early leaf senescence, a wheat (Triticum aestivum L.) premature leaf senescence mutant (GSm) and its wild type were employed in this study. We compared the physiological characteristics and transcriptome of wheat leaves between the wild type (WT) and the mutant at two-time points. Physiological characteristics and differentially expressed gene (DEG) analysis revealed many genes and metabolic pathways that were closely related to senescence. These results will not only support further gene cloning and functional analysis of GSm, but also facilitate the study of leaf senescence in wheat. Abstract Premature leaf senescence has a profound influence on crop yield and quality. Here, a stable premature senescence mutant (GSm) was obtained from the common wheat (Triticum aestivum L.) cultivar Chang 6878 by mutagenesis with ethyl methanesulfonate. The differences between the GSm mutant and its wild-type (WT) were analyzed in terms of yield characteristics, photosynthetic fluorescence indices, and senescence-related physiological parameters. RNA sequencing was used to reveal gene expression differences between GSm and WT. The results showed that the yield of GSm was considerably lower than that of WT. The net photosynthetic rate, transpiration rate, maximum quantum yield, non-photochemical quenching coefficient, photosynthetic electron transport rate, soluble protein, peroxidase activity, and catalase activity all remarkably decreased in flag leaves of GSm, whereas malondialdehyde content distinctively increased compared with those of WT. The analysis of differentially expressed genes indicated blockade of chlorophyll and carotenoid biosynthesis, accelerated degradation of chlorophyll, and diminished photosynthetic capacity in mutant leaves; brassinolide might facilitate chlorophyll breakdown and consequently accelerate leaf senescence. NAC genes positively regulated the senescence process. Compared with NAC genes, expression of WRKY and MYB genes was induced earlier in the mutant possibly due to increased levels of reactive oxygen species and plant hormones (e.g., brassinolide, salicylic acid, and jasmonic acid), thereby accelerating leaf senescence. Furthermore, the antioxidant system played a role in minimizing oxidative damage in the mutant. These results provides novel insight into the molecular mechanisms of premature leaf senescence in crops.
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Wang C, Li T, Liu Q, Li L, Feng Z, Yu S. Characterization and Functional Analysis of GhNAC82, A NAM Domain Gene, Coordinates the Leaf Senescence in Upland Cotton ( Gossypium hirsutum L.). PLANTS (BASEL, SWITZERLAND) 2022; 11:1491. [PMID: 35684264 PMCID: PMC9182992 DOI: 10.3390/plants11111491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/22/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
In the process of growth and development, cotton exhibits premature senescence under various abiotic stresses, impairing yield and fiber quality. NAC (NAM, ATAF1,2, and CUC2) protein widely distributed in land plants, play the critical role in responding to abiotic stress and regulating leaf senescence. We have identified and functional analyzed a NAM domain gene GhNAC82 in upland cotton, it was located on the A11 chromosome 4,921,702 to 4,922,748 bp, only containing one exon. The spatio-temporal expression pattern analysis revealed that it was highly expressed in root, torus, ovule and fiber development stage. The results of qRT-PCR validated that GhNAC82 negatively regulated by salt stress, drought stress, H2O2 stress, IAA treatment, and ethylene treatment, positively regulated by the ABA and MeJA treatment. Moreover, heterologous overexpression of GhNAC82 results in leaf premature senescence and delays root system development in Arabidopsis thaliana. The phenotype of delayed-senescence was performed after silencing GhNAC82 by VIGS in premature cotton. Taken together, GhNAC82 was involved in different abiotic stress pathways and play important roles in negatively regulating leaf premature senescence.
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Affiliation(s)
- Chenlei Wang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China; (C.W.); (L.L.)
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of the Chinese Academy of Agricultural Sciences, Anyang 455000, China; (T.L.); (Q.L.)
| | - Tengyu Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of the Chinese Academy of Agricultural Sciences, Anyang 455000, China; (T.L.); (Q.L.)
| | - Qibao Liu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of the Chinese Academy of Agricultural Sciences, Anyang 455000, China; (T.L.); (Q.L.)
| | - Libei Li
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China; (C.W.); (L.L.)
| | - Zhen Feng
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China; (C.W.); (L.L.)
| | - Shuxun Yu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China; (C.W.); (L.L.)
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of the Chinese Academy of Agricultural Sciences, Anyang 455000, China; (T.L.); (Q.L.)
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Qing D, Deng G, Pan Y, Gao L, Liang H, Zhou W, Chen W, Li J, Huang J, Gao J, Lu C, Wu H, Liu K, Dai G. ITRAQ-based quantitative proteomic analysis of japonica rice seedling during cold stress. BREEDING SCIENCE 2022; 72:150-168. [PMID: 36275934 PMCID: PMC9522529 DOI: 10.1270/jsbbs.21081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/11/2021] [Indexed: 06/16/2023]
Abstract
Low temperature is one of the important environmental factors that affect rice growth and yield. To better understand the japonica rice responses to cold stress, isobaric tags for a relative and absolute quantification (iTRAQ) labeling-based quantitative proteomics approach was used to detected changes in protein levels. Two-week-old seedlings of the cold tolerant rice variety Kongyu131 were treated at 8°C for 24, 48 and 72 h, then the total proteins were extracted from tissues and used for quantitative proteomics analysis. A total of 5082 proteins were detected for quantitative analysis, of which 289 proteins were significantly regulated, consisting of 169 uniquely up-regulated proteins and 125 uniquely down-regulated proteins in cold stress groups relative to the control group. Functional analysis revealed that most of the regulated proteins are involved in photosynthesis, metabolic pathway, biosynthesis of secondary metabolites and carbon metabolism. Western blot analysis showed that protein regulation was consistent with the iTRAQ data. The corresponding genes of 25 regulated proteins were used for quantitative real time PCR analysis, and the results showed that the mRNA level was not always parallel to the corresponding protein level. The importance of our study is that it provides new insights into cold stress responses in rice with respect to proteomics and provides candidate genes for cold-tolerance rice breeding.
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Affiliation(s)
- Dongjin Qing
- Rice Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning, China
- Guangxi Academy of Agricultural Sciences/Guangxi Crop Genetic Improvement and Biotechnology Laboratory, Nanning, China
| | - Guofu Deng
- Rice Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning, China
| | - Yinghua Pan
- Rice Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning, China
| | - Lijun Gao
- Guangxi Academy of Agricultural Sciences/Guangxi Crop Genetic Improvement and Biotechnology Laboratory, Nanning, China
| | - Haifu Liang
- Rice Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning, China
| | - Weiyong Zhou
- Rice Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning, China
| | - Weiwei Chen
- Rice Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning, China
| | - Jingcheng Li
- Rice Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning, China
| | - Juan Huang
- Guangxi Academy of Agricultural Sciences/Guangxi Crop Genetic Improvement and Biotechnology Laboratory, Nanning, China
| | - Ju Gao
- Guangxi Academy of Agricultural Sciences/Guangxi Crop Genetic Improvement and Biotechnology Laboratory, Nanning, China
| | - Chunju Lu
- Rice Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning, China
| | - Hao Wu
- Guangxi Academy of Agricultural Sciences/Guangxi Crop Genetic Improvement and Biotechnology Laboratory, Nanning, China
| | - Kaiqiang Liu
- Rice Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning, China
| | - Gaoxing Dai
- Rice Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning, China
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Shen W, Feng Z, Hu K, Cao W, Li M, Ju R, Zhang Y, Chen Z, Zuo S. Tryptamine 5-Hydroxylase Is Required for Suppression of Cell Death and Uncontrolled Defense Activation in Rice. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.857760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Lesion-mimic mutants are useful materials to dissect mechanisms controlling programmed cell death (PCD) and defense response in plants. Although dozens of lesion-mimic mutant genes have been identified in plants, the molecular mechanisms underlying PCD and defense response remain to be extensively elucidated. Here, we identified a rice lesion mimic mutant, named lesion mimic 42 (lm42), from an ethylmethylsulfone (EMS)-induced mutant population. The lm42 mutant displayed flame-red spots on the leaves and sheaths at the 3-leaf developmental stage and exhibited impaired photosynthetic capacity with decreased chlorophyll content and decomposed chloroplast thylakoids. The lesion development of lm42 was light- and temperature-dependent. We identified a single base mutation (T38A), changing a Leu to Gln, in the first exon of LOC_Os12g16720 (LM42), which encodes a tryptamine 5-hydroxylase, by map-based cloning. We carried out transgenic complementation to confirm that this mutation caused the lm42 phenotype. We further knocked out the LM42 gene by CRISPR/Cas9 to recreate the lm42 phenotype. LM42 is highly expressed in leaves, leaf sheaths and roots. Loss-of-function of LM42 activated expression of ROS-generating genes and inhibited expression of ROS-scavenging genes, leading to ROS accumulation and eventually cell death. Furthermore, its disruption induced expression of defense-response genes and enhanced host resistance to both fungal pathogen Magnaporthe oryzae and bacterial pathogen Xanthomonas oryzae pv. oryzae. Our transcriptomic data suggested that the way lm42 led to lesion-mimic was probably by affecting ribosome development. Overall, our results demonstrate that tryptamine 5-hydroxylase-coding gene LM42 is required for suppression of cell death and uncontrolled activation of defense responses in rice.
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Zhang X, Han C, Liang Y, Yang Y, Liu Y, Cao Y. Combined full-length transcriptomic and metabolomic analysis reveals the regulatory mechanisms of adaptation to salt stress in asparagus. FRONTIERS IN PLANT SCIENCE 2022; 13:1050840. [PMID: 36388563 PMCID: PMC9648818 DOI: 10.3389/fpls.2022.1050840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/14/2022] [Indexed: 05/10/2023]
Abstract
Soil salinity is a very serious abiotic stressor that affects plant growth and threatens crop yield. Thus, it is important to explore the mechanisms of salt tolerance of plant and then to stabilize and improve crop yield. Asparagus is an important cash crop, but its salt tolerance mechanisms are largely unknown. Full-length transcriptomic and metabolomic analyses were performed on two asparagus genotypes: 'jx1502' (a salt-tolerant genotype) and 'gold crown' (a salt-sensitive genotype). Compared with the distilled water treatment (control), 877 and 1610 differentially expressed genes (DEGs) were identified in 'jx1502' and 'gold crown' under salt stress treatment, respectively, and 135 and 73 differentially accumulated metabolites (DAMs) were identified in 'jx1502' and 'gold crown' under salt stress treatment, respectively. DEGs related to ion transport, plant hormone response, and cell division and growth presented differential expression profiles between 'jx1502' and 'gold crown.' In 'jx1502,' 11 ion transport-related DEGs, 8 plant hormone response-related DEGs, and 12 cell division and growth-related DEGs were upregulated, while 7 ion transport-related DEGs, 4 plant hormone response-related DEGs, and 2 cell division and growth-related DEGs were downregulated. Interestingly, in 'gold crown,' 14 ion transport-related DEGs, 2 plant hormone response-related DEGs, and 6 cell division and growth-related DEGs were upregulated, while 45 ion transport-related DEGs, 13 plant hormone response-related DEGs, and 16 cell division and growth-related DEGs were downregulated. Genotype 'jx1502' can modulate K+/Na+ and water homeostasis and maintain a more constant transport system for nutrient uptake and distribution than 'gold crown' under salt stress. Genotype 'jx1502' strengthened the response to auxin (IAA), as well as cell division and growth for root remodeling and thus salt tolerance. Therefore, the integration analysis of transcriptomic and metabolomic indicated that 'jx1502' enhanced sugar and amino acid metabolism for energy supply and osmotic regulatory substance accumulation to meet the demands of protective mechanisms against salt stress. This work contributed to reveal the underlying salt tolerance mechanism of asparagus at transcription and metabolism level and proposed new directions for asparagus variety improvement.
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Affiliation(s)
- Xuhong Zhang
- Institute of Cash Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
- Landscape Management and Protection Center, Shijiazhuang Bureau of Landscape Architecture, Shijiazhuang, China
| | - Changzhi Han
- College of Biodiversity Conservation, Southwest Forestry University, Kunming, China
| | - Yuqin Liang
- Institute of Cash Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
| | - Yang Yang
- Institute of Cash Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
| | - Yun Liu
- Institute of Cash Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
| | - Yanpo Cao
- Institute of Cash Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China
- *Correspondence: Yanpo Cao,
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Li L, He Y, Zhang Z, Shi Y, Zhang X, Xu X, Wu JL, Tang S. OsNAC109 regulates senescence, growth and development by altering the expression of senescence- and phytohormone-associated genes in rice. PLANT MOLECULAR BIOLOGY 2021; 105:637-654. [PMID: 33543390 PMCID: PMC7985107 DOI: 10.1007/s11103-021-01118-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 01/13/2021] [Indexed: 05/11/2023]
Abstract
We demonstrate that OsNAC109 regulates senescence, growth and development via binding to the cis-element CNTCSSNNSCAVG and altering the expression of multiple senescence- and hormone-associated genes in rice. The NAC family is one of the largest transcripton factor families in plants and plays an essential role in plant development, leaf senescence and responses to biotic/abiotic stresses through modulating the expression of numerous genes. Here, we isolated and characterized a novel yellow leaf 3 (yl3) mutant exhibiting arrested-growth, increased accumulation of reactive oxygen species (ROS), decreased level of soluble proteins, increased level of malondialdehyde (MDA), reduced activities of ROS scavenging enzymes, altered expression of photosynthesis and senescence/hormone-associated genes. The yellow leaf and arrested-growth trait was controlled by a single recessive gene located to chromosome 9. A single nucleotide substitution was detected in the mutant allele leading to premature termination of its coding protein. Genetic complementation could rescue the mutant phenotype while the YL3 knockout lines displayed similar phenotype to WT. YL3 was expressed in all tissues tested and predicted to encode a transcriptional factor OsNAC109 which localizes to the nucleus. It was confirmed that OsNAC109 could directly regulate the expression of OsNAP, OsNYC3, OsEATB, OsAMTR1, OsZFP185, OsMPS and OsGA2ox3 by targeting to the highly conserved cis-element CNTCSSNNSCAVG except OsSAMS1. Our results demonstrated that OsNAC109 is essential to rice leaf senescence, growth and development through regulating the expression of senescence- and phytohormone-associated genes in rice.
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Affiliation(s)
- Liangjian Li
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Yan He
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Zhihong Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Yongfeng Shi
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Xiaobo Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Xia Xu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Jian-Li Wu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China.
| | - Shaoqing Tang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China.
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10
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Ao K, Tong M, Li L, Lüdke D, Lipka V, Chen S, Wiermer M, Li X. SCF SNIPER7 controls protein turnover of unfoldase CDC48A to promote plant immunity. THE NEW PHYTOLOGIST 2021; 229:2795-2811. [PMID: 33156518 DOI: 10.1111/nph.17071] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 11/01/2020] [Indexed: 06/11/2023]
Abstract
The unfoldase CDC48 (Cell Division Cycle 48) is highly conserved in eukaryotes, serving as an AAA + ATPase to extract ubiquitinated proteins from large protein complexes and membranes. Although its biochemical properties have been studied extensively in yeast and animal systems, the biological roles and regulations of the plant CDC48s have been explored only recently. Here we describe the identification of a novel E3 ligase from the SNIPER (snc1-influencing plant E3 ligase reverse genetic) screen, which contributes to plant defense regulation by targeting CDC48A for degradation. SNIPER7 encodes an F-box protein and its overexpression leads to autoimmunity. We identified CDC48s as interactors of SNIPER7 through immunoprecipitation followed by mass spectrometry proteomic analysis. SNIPER7 overexpression lines phenocopy the autoimmune mutant Atcdc48a-4. Furthermore, CDC48A protein levels are reduced or stabilized when SNIPER7 is overexpressed or inhibited, respectively, suggesting that CDC48A is the ubiquitination substrate of SCFSNIPER7 . Taken together, this study reveals a new mechanism where a SCFSNIPER7 complex regulates CDC48 unfoldase levels and modulates immune output.
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Affiliation(s)
- Kevin Ao
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
- Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Meixuezi Tong
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
- Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Lin Li
- National Institute of Biological Sciences, Beijing, 102206, China
| | - Daniel Lüdke
- Molecular Biology of Plant-Microbe Interactions Research Group, Albrecht-von-Haller-Institute for Plant Sciences, University of Goettingen, Goettingen, D-37077, Germany
| | - Volker Lipka
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, University of Goettingen, Goettingen, D-37077, Germany
- Central Microscopy Facility of the Faculty of Biology and Psychology, University of Goettingen, Goettingen, D-37077, Germany
| | - She Chen
- National Institute of Biological Sciences, Beijing, 102206, China
| | - Marcel Wiermer
- Molecular Biology of Plant-Microbe Interactions Research Group, Albrecht-von-Haller-Institute for Plant Sciences, University of Goettingen, Goettingen, D-37077, Germany
| | - Xin Li
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
- Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
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11
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Xiong E, Li Z, Zhang C, Zhang J, Liu Y, Peng T, Chen Z, Zhao Q. A study of leaf-senescence genes in rice based on a combination of genomics, proteomics and bioinformatics. Brief Bioinform 2020; 22:5998850. [PMID: 33257942 DOI: 10.1093/bib/bbaa305] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/15/2020] [Accepted: 10/10/2020] [Indexed: 12/14/2022] Open
Abstract
Leaf senescence is a highly complex, genetically regulated and well-ordered process with multiple layers and pathways. Delaying leaf senescence would help increase grain yields in rice. Over the past 15 years, more than 100 rice leaf-senescence genes have been cloned, greatly improving the understanding of leaf senescence in rice. Systematically elucidating the molecular mechanisms underlying leaf senescence will provide breeders with new tools/options for improving many important agronomic traits. In this study, we summarized recent reports on 125 rice leaf-senescence genes, providing an overview of the research progress in this field by analyzing the subcellular localizations, molecular functions and the relationship of them. These data showed that chlorophyll synthesis and degradation, chloroplast development, abscisic acid pathway, jasmonic acid pathway, nitrogen assimilation and ROS play an important role in regulating the leaf senescence in rice. Furthermore, we predicted and analyzed the proteins that interact with leaf-senescence proteins and achieved a more profound understanding of the molecular principles underlying the regulatory mechanisms by which leaf senescence occurs, thus providing new insights for future investigations of leaf senescence in rice.
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Affiliation(s)
- Erhui Xiong
- College of Agriculture, Henan Agricultural University (HAU), China
| | - Zhiyong Li
- Academy for Advanced Interdisciplinary Studies, South University of Science and Technology, Shenzhen, China
| | - Chen Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | | | - Ye Liu
- College of Agriculture, HAU
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12
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He Y, Shi Y, Zhang X, Xu X, Wang H, Li L, Zhang Z, Shang H, Wang Z, Wu JL. The OsABCI7 Transporter Interacts with OsHCF222 to Stabilize the Thylakoid Membrane in Rice. PLANT PHYSIOLOGY 2020; 184:283-299. [PMID: 32661060 PMCID: PMC7479889 DOI: 10.1104/pp.20.00445] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/23/2020] [Indexed: 05/05/2023]
Abstract
The thylakoid membrane is a highly complex membrane system in plants and plays crucial roles in the biogenesis of the photosynthetic apparatus and plant development. However, the genetic factors involved in chloroplast development and its relationship with intracellular metabolites are largely unknown. Here, a rice (Oryza sativa) chlorotic and necrotic leaf1 (cnl1) mutant was identified and map-based cloning revealed that a single base substitution followed by a 6-bp deletion in the ATP-binding cassette transporter I family member7 (OsABCI7) resulted in chlorotic and necrotic leaves with thylakoid membrane degradation, chlorophyll breakdown, photosynthesis impairment, and cell death in cnl1 Furthermore, the expression of OsABCI7 was inducible under lower temperatures, which severely affected cnl1 chloroplast development, and etiolated cnl1 seedlings were unable to recover to a normal green state under light conditions. Functional complementation and overexpression showed that OsABCI7 could rescue the cnl1 chlorotic and necrotic phenotype. OsABCI7 interacted with HIGH CHLOROPHYLL FLUORESCENCE222 (OsHCF222) to regulate cellular reactive oxygen species (ROS) homeostasis for thylakoid membrane stability. OsABCI7 localized to thylakoid membranes, while OsHCF222 targeted to endoplasmic reticulum and chloroplasts. Exogenous application of ascorbic acid eased the yellowish leaf phenotype by increasing chlorophyll content and alleviating ROS stress in cnl1 Unlike cnl1, the CRISPR/Cas9-mediated OsHCF222 knockout lines showed chlorotic leaves but were seedling lethal. Our results provide insight into the functions of ABC transporters in rice, especially within the relationship between ROS homeostasis and stability of thylakoid membranes.
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Affiliation(s)
- Yan He
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Yongfeng Shi
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Xiaobo Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Xia Xu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Huimei Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Liangjian Li
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Zhihong Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Huihui Shang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Zhonghao Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Jian-Li Wu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
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13
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Rani MH, Liu Q, Yu N, Zhang Y, Wang B, Cao Y, Zhang Y, Islam MA, Zegeye WA, Cao L, Cheng S. ES5 is involved in the regulation of phosphatidylserine synthesis and impacts on early senescence in rice (Oryza sativa L.). PLANT MOLECULAR BIOLOGY 2020; 102:501-515. [PMID: 31919641 DOI: 10.1007/s11103-019-00961-964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 12/30/2019] [Indexed: 05/24/2023]
Abstract
Leaf senescence, which affects plant growth and yield in rice, is an ideal target for crop improvement and remarkable advances have been made to identify the mechanism underlying this process. We have characterized an early senile mutant es5 (early leaf senescence 5) in rice exhibiting leaf yellowing phenotype after the 4-leaf stage. This phenotype was confirmed by the higher accumulation of reactive oxygen species (ROS) and malondialdehyde (MDA), the disintegration of chloroplasts, reduction in chlorophyll content and photosynthetic rate and up-regulation of senescence-associated genes (SAGs) like Osh36, OsI57, and OsI85. Positional cloning revealed that the es5 phenotype is the result of one base substitution in ES5, encoding phosphatidylserine synthase (PSS) family protein, which is involved in the base-exchange type reaction to synthesize the minor membrane phospholipid phosphatidylserine. Functional complementation of ES5 in the es5 plants completely restored the wild-type phenotype. Ultra-high-performance liquid chromatography (UHPLC) analysis showed that es5 plants had increased levels of phosphatidylserine (PS) and decreased level of phosphatidylcholine (PC). These results provide evidence about the role of PS in rice leaf senescence.
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Affiliation(s)
- Mohammad Hasanuzzaman Rani
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- Bangladesh Institute of Nuclear Agriculture, Mymensingh, 2202, Bangladesh
| | - Qunen Liu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Ning Yu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Yingxin Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Beifang Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Yongrun Cao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Yue Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Md Anowerul Islam
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Workie Anley Zegeye
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- Department of Plant Sciences, University of Gondar, Gondar, Ethiopia
| | - Liyong Cao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China.
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China.
| | - Shihua Cheng
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China.
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China.
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14
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Rani MH, Liu Q, Yu N, Zhang Y, Wang B, Cao Y, Zhang Y, Islam MA, Zegeye WA, Cao L, Cheng S. ES5 is involved in the regulation of phosphatidylserine synthesis and impacts on early senescence in rice (Oryza sativa L.). PLANT MOLECULAR BIOLOGY 2020; 102:501-515. [PMID: 31919641 PMCID: PMC7026238 DOI: 10.1007/s11103-019-00961-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 12/30/2019] [Indexed: 05/04/2023]
Abstract
Leaf senescence, which affects plant growth and yield in rice, is an ideal target for crop improvement and remarkable advances have been made to identify the mechanism underlying this process. We have characterized an early senile mutant es5 (early leaf senescence 5) in rice exhibiting leaf yellowing phenotype after the 4-leaf stage. This phenotype was confirmed by the higher accumulation of reactive oxygen species (ROS) and malondialdehyde (MDA), the disintegration of chloroplasts, reduction in chlorophyll content and photosynthetic rate and up-regulation of senescence-associated genes (SAGs) like Osh36, OsI57, and OsI85. Positional cloning revealed that the es5 phenotype is the result of one base substitution in ES5, encoding phosphatidylserine synthase (PSS) family protein, which is involved in the base-exchange type reaction to synthesize the minor membrane phospholipid phosphatidylserine. Functional complementation of ES5 in the es5 plants completely restored the wild-type phenotype. Ultra-high-performance liquid chromatography (UHPLC) analysis showed that es5 plants had increased levels of phosphatidylserine (PS) and decreased level of phosphatidylcholine (PC). These results provide evidence about the role of PS in rice leaf senescence.
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Affiliation(s)
- Mohammad Hasanuzzaman Rani
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- Bangladesh Institute of Nuclear Agriculture, Mymensingh, 2202, Bangladesh
| | - Qunen Liu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Ning Yu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Yingxin Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Beifang Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Yongrun Cao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Yue Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Md Anowerul Islam
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
| | - Workie Anley Zegeye
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China
- Department of Plant Sciences, University of Gondar, Gondar, Ethiopia
| | - Liyong Cao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China.
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China.
| | - Shihua Cheng
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China.
- China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006, Zhejiang, China.
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15
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Liu X, Inoue H, Tang X, Tan Y, Xu X, Wang C, Jiang CJ. Rice OsAAA-ATPase1 is Induced during Blast Infection in a Salicylic Acid-Dependent Manner, and Promotes Blast Fungus Resistance. Int J Mol Sci 2020; 21:ijms21041443. [PMID: 32093321 PMCID: PMC7073101 DOI: 10.3390/ijms21041443] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 01/10/2023] Open
Abstract
Fatty acids (FAs) have been implicated in signaling roles in plant defense responses. We previously reported that mutation or RNAi-knockdown (OsSSI2-kd) of the rice OsSSI2 gene, encoding a stearoyl acyl carrier protein FA desaturase (SACPD), remarkably enhanced resistance to blast fungus Magnaporthe oryzae and the leaf-blight bacterium Xanthomonas oryzae pv. oryzae (Xoo). Transcriptomic analysis identified six AAA-ATPase family genes (hereafter OsAAA-ATPase1–6) upregulated in the OsSSI2-kd plants, in addition to other well-known defense-related genes. Here, we report the functional analysis of OsAAA-ATPase1 in rice’s defense response to M. oryzae. Recombinant OsAAA-ATPase1 synthesized in Escherichia coli showed ATPase activity. OsAAA-ATPase1 transcription was induced by exogenous treatment with a functional analogue of salicylic acid (SA), benzothiadiazole (BTH), but not by other plant hormones tested. The transcription of OsAAA-ATPase1 was also highly induced in response to M. oryzae infection in an SA-dependent manner, as gene induction was significantly attenuated in a transgenic rice line expressing a bacterial gene (nahG) encoding salicylate hydroxylase. Overexpression of OsAAA-ATPase1 significantly enhanced pathogenesis-related gene expression and the resistance to M. oryzae; conversely, RNAi-mediated suppression of this gene compromised this resistance. These results suggest that OsAAA-APTase1 plays an important role in SA-mediated defense responses against blast fungus M. oryzae.
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Affiliation(s)
- Xinqiong Liu
- College of Life Science, South-Central University for Nationalities, Wuhan 430074, China
- Correspondence: (X.L.); (C.-J.J.); Tel.: +86-189-7122-9082 (X.L.); +81-298-838-8385(C.-J.J.)
| | - Haruhiko Inoue
- Institute of Agrobiological Sciences (NIAS), National Agriculture and Food Research Organization (NARO), Tsukuba 305-8602, Japan
| | - Xianying Tang
- College of Life Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Yanping Tan
- College of Life Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Xin Xu
- College of Life Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Chuntai Wang
- College of Life Science, South-Central University for Nationalities, Wuhan 430074, China
| | - Chang-Jie Jiang
- Institute of Agrobiological Sciences (NIAS), National Agriculture and Food Research Organization (NARO), Tsukuba 305-8602, Japan
- Correspondence: (X.L.); (C.-J.J.); Tel.: +86-189-7122-9082 (X.L.); +81-298-838-8385(C.-J.J.)
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16
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Zhou D, Li T, Yang Y, Qu Z, Ouyang L, Jiang Z, Lin X, Zhu C, Peng L, Fu J, Peng X, Bian J, Tang W, Xu J, He H. OsPLS4 Is Involved in Cuticular Wax Biosynthesis and Affects Leaf Senescence in Rice. FRONTIERS IN PLANT SCIENCE 2020; 11:782. [PMID: 32595674 PMCID: PMC7300252 DOI: 10.3389/fpls.2020.00782] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 05/18/2020] [Indexed: 05/08/2023]
Abstract
Leaf senescence is one of the most common factors that affects the growth and yield of rice. Although numerous genes affecting leaf senescence have been identified, few involved in cuticular wax synthesis have been described for rice premature leaf senescence. Here, we cloned and characterized Premature Leaf Senescence 4 (PLS4) in rice (Oryza sativa), which encodes a putative 3-oxoacyl-reductase in the fatty acid biosynthetic pathway. Subcellular localization of OsPLS4 was observed in the chloroplast. A single nucleotide substitution in OsPLS4 reduced leaf cuticular wax, and the expression levels of most wax biosynthesis-associated genes were downregulated. TEM showed chloroplast development were defective in the pls4 mutant. Further investigation revealed that the chlorophyll (Chl) content was reduced in the pls4 mutant compared with the WT and that the photosynthesis rate was lower, which caused ROS dramatic accumulation at the heading stage. These results confirmed premature leaf senescence in pls4 plants. Cold treatment indicated that the mutant was more sensitive than the WT was to cold stress. Together, all the above results indicate that the OsPLS4 mutation affects cuticular wax biosynthesis and chloroplast development in rice, causing reduced cuticular wax and premature leaf senescence.
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Affiliation(s)
- Dahu Zhou
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops, Hunan Agricultural University, Changsha, China
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Ting Li
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Yaolong Yang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Ziyang Qu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Linjuan Ouyang
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Zhishu Jiang
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Xiaoli Lin
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Changlan Zhu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Liyuan Peng
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Junru Fu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Xiaosong Peng
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Jianmin Bian
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Wenbang Tang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops, Hunan Agricultural University, Changsha, China
| | - Jie Xu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Haohua He
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops, Hunan Agricultural University, Changsha, China
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
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17
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Kamal NM, Gorafi YSA, Abdelrahman M, Abdellatef E, Tsujimoto H. Stay-Green Trait: A Prospective Approach for Yield Potential, and Drought and Heat Stress Adaptation in Globally Important Cereals. Int J Mol Sci 2019; 20:E5837. [PMID: 31757070 PMCID: PMC6928793 DOI: 10.3390/ijms20235837] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 11/16/2022] Open
Abstract
The yield losses in cereal crops because of abiotic stress and the expected huge losses from climate change indicate our urgent need for useful traits to achieve food security. The stay-green (SG) is a secondary trait that enables crop plants to maintain their green leaves and photosynthesis capacity for a longer time after anthesis, especially under drought and heat stress conditions. Thus, SG plants have longer grain-filling period and subsequently higher yield than non-SG. SG trait was recognized as a superior characteristic for commercially bred cereal selection to overcome the current yield stagnation in alliance with yield adaptability and stability. Breeding for functional SG has contributed in improving crop yields, particularly when it is combined with other useful traits. Thus, elucidating the molecular and physiological mechanisms associated with SG trait is maybe the key to defeating the stagnation in productivity associated with adaptation to environmental stress. This review discusses the recent advances in SG as a crucial trait for genetic improvement of the five major cereal crops, sorghum, wheat, rice, maize, and barley with particular emphasis on the physiological consequences of SG trait. Finally, we provided perspectives on future directions for SG research that addresses present and future global challenges.
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Affiliation(s)
- Nasrein Mohamed Kamal
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan; (Y.S.A.G.); (M.A.)
- Agricultural Research Corporation, Wad-Medani P.O. Box 126, Sudan
| | - Yasir Serag Alnor Gorafi
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan; (Y.S.A.G.); (M.A.)
- Agricultural Research Corporation, Wad-Medani P.O. Box 126, Sudan
| | - Mostafa Abdelrahman
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan; (Y.S.A.G.); (M.A.)
- Botany Department, Faculty of Science, Aswan University, Aswan 81528, Egypt
| | - Eltayb Abdellatef
- Commission for Biotechnology and Genetic Engineering, National Center for Research, Khartoum P.O. Box 6096, Sudan;
| | - Hisashi Tsujimoto
- Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan; (Y.S.A.G.); (M.A.)
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18
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Shi L, Zhang XB, Shi YF, Xu X, He Y, Shao G, Huang QN, Wu JL. OsCDC48/48E complex is required for plant survival in rice (Oryza sativa L.). PLANT MOLECULAR BIOLOGY 2019; 100:163-179. [PMID: 30937701 PMCID: PMC6513905 DOI: 10.1007/s11103-019-00851-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 02/25/2019] [Indexed: 06/09/2023]
Abstract
We demonstrate that the C-terminus of OsCDC48 is essential for maintaining its full ATPase activity and OsCDC48/48E interaction is required to modulate cellular processes and plant survival in rice. Cell division cycle 48 (CDC48) belongs to the superfamily protein of ATPases associated with diverse cellular activities (AAA). We previously isolated a rice CDC48 mutant (psd128) displaying premature senescence and death phenotype. Here, we showed that OsCDC48 (Os03g0151800) interacted with OsCDC48E (Os10g0442600), a homologue of OsCDC48, to control plant survival in rice. OsCDC48E knockout plants exhibited similar behavior to psd128 with premature senescence and plant death. Removal of the C-terminus of OsCDC48 caused altered expression of cell cycle-related genes, changed the percentage of cells in G1 and G2/M phases, and abolished the interaction between OsCDC48 itself and between OsCDC48 and OsCDC48E, respectively. Furthermore, the truncated OsCDC48-PSD128 protein lacking the C-terminal 27 amino acid residues showed a decreased level of ATPase activity. Overexpression of OsCDC48-psd128 resulted in differential expression of AAA-ATPase associated genes leading to increased total ATPase activity, accumulation of reactive oxygen species and decreased plant tiller numbers while overexpression of OsCDC48 also resulted in differential expression of AAA-ATPase associated genes leading to increased total ATPase activity, but increased plant tiller numbers and grain yield, indicating its potential utilization for yield improvement. Our results demonstrated that the C-terminal region of OsCDC48 was essential for maintaining the full ATPase activity and OsCDC48/48E complex might function in form of heteromultimers to modulate cellular processes and plant survival in rice.
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Affiliation(s)
- Lei Shi
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiao-Bo Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Yong-Feng Shi
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Xia Xu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Yuqing He
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Guosheng Shao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China
| | - Qi-Na Huang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China.
| | - Jian-Li Wu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou, 310006, China.
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19
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CRISPR directed evolution of the spliceosome for resistance to splicing inhibitors. Genome Biol 2019; 20:73. [PMID: 31036069 PMCID: PMC6489355 DOI: 10.1186/s13059-019-1680-9] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 03/25/2019] [Indexed: 12/31/2022] Open
Abstract
Increasing genetic diversity via directed evolution holds great promise to accelerate trait development and crop improvement. We developed a CRISPR/Cas-based directed evolution platform in plants to evolve the rice (Oryza sativa) SF3B1 spliceosomal protein for resistance to splicing inhibitors. SF3B1 mutant variants, termed SF3B1-GEX1A-Resistant (SGR), confer variable levels of resistance to splicing inhibitors. Studies of the structural basis of the splicing inhibitor binding to SGRs corroborate the resistance phenotype. This directed evolution platform can be used to interrogate and evolve the molecular functions of key biomolecules and to engineer crop traits for improved performance and adaptation under climate change conditions.
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20
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Bègue H, Mounier A, Rosnoblet C, Wendehenne D. Toward the understanding of the role of CDC48, a major component of the protein quality control, in plant immunity. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 279:34-44. [PMID: 30709491 DOI: 10.1016/j.plantsci.2018.10.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/29/2018] [Accepted: 10/31/2018] [Indexed: 06/09/2023]
Abstract
The evolutionally conserved chaperone-like protein CDC48 (cell division cycle 48) is a major component of ubiquitin-dependent protein degradation pathways in animal and yeast and, more generally, of the protein quality control machinery. In plants, CDC48 plays essential regulatory functions in development and the possibly that it contributes to protein degradation through the ubiquitin-proteasome system (UPS) and the endoplasmic reticulum-associated protein degradation (ERAD) system has been reported. In this review we described recent findings highlighting a role for CDC48 in plant immunity. First data indicated that CDC48 is S-nitrosylated in plant cells undergoing an immune response, regulates the turnover of immune receptors and mediates the degradation of viral proteins. Furthermore its overexpression was associated to an exacerbated hypersensitive-like cell death. We also designed and reported here the first CDC48 interactome. The corresponding data confirm the closed interaction of CDC48 with components of the UPS and shed light on its putative regulatory function of S-adenosyl-methionine synthesis and metabolism. More generally, these investigations further support the concept that plant cells facing pathogen attack finely regulate the protein quality control machinery.
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Affiliation(s)
- Hervé Bègue
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France.
| | - Arnaud Mounier
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France
| | - Claire Rosnoblet
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France
| | - David Wendehenne
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France.
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21
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Chen Z, Chen T, Sathe AP, He Y, Zhang XB, Wu JL. Identification of a Novel Semi-Dominant Spotted-Leaf Mutant with Enhanced Resistance to Xanthomonas oryzae pv. oryzae in Rice. Int J Mol Sci 2018; 19:E3766. [PMID: 30486418 PMCID: PMC6321207 DOI: 10.3390/ijms19123766] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 11/15/2018] [Accepted: 11/22/2018] [Indexed: 12/26/2022] Open
Abstract
Many spotted-leaf mutants show enhanced disease resistance to multiple pathogen attacks; however, the mechanisms are largely unknown. Here, we reported a novel semi-dominant spotted-leaf mutant 24 (spl24) obtained from an ethyl methane sulfonate (EMS)-induced IR64 mutant bank. spl24 developed tiny brown lesions on the leaf tip and spread down gradually to the leaf base as well as the sheath at the early heading stage. The performances of major agronomic traits such as the plant height, panicle length, number of panicles/plant, and 1000-grain weight were significantly altered in spl24 when compared to the wild-type IR64. Furthermore, spl24 exhibited a premature senescing phenotype with degeneration of nuclear acids, significantly reduced soluble protein content, increased level of malonaldehyde (MDA), and lowered activities of reactive oxygen species (ROS) scavenging enzymes. Disease evaluation indicated that spl24 showed enhanced resistance to multiple races of Xanthomonas oryzae pv. oryzae, the causal pathogen of bacterial leaf blight in rice, with elevated expression of pathogenesis-related genes, salicylic acid (SA) signaling pathway-associated genes revealed by real-time quantitative PCR and high-throughput RNA sequencing analysis. Genetic analysis and gene mapping indicated that the lesion mimic phenotype was controlled by a novel semi-dominant nuclear gene. The mutation, tentatively termed as OsSPL24, was in a 110 kb region flanked by markers Indel-33 and Indel-12 in chromosome 11. Together, our data suggest that spl24 is a novel lesion mimic mutant with enhanced innate immunity and would facilitate the isolation and functional characterization of the target gene.
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Affiliation(s)
- Zheng Chen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China.
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Ting Chen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China.
| | - Atul Prakash Sathe
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China.
| | - Yuqing He
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Xiao-Bo Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China.
| | - Jian-Li Wu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China.
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22
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Xu X, Chen Z, Shi YF, Wang HM, He Y, Shi L, Chen T, Wu JL, Zhang XB. Functional inactivation of OsGCNT induces enhanced disease resistance to Xanthomonas oryzae pv. oryzae in rice. BMC PLANT BIOLOGY 2018; 18:264. [PMID: 30382816 PMCID: PMC6211509 DOI: 10.1186/s12870-018-1489-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 10/17/2018] [Indexed: 05/05/2023]
Abstract
BACKGROUND Spotted-leaf mutants are important to reveal programmed cell death and defense-related pathways in rice. We previously characterized the phenotype performance of a rice spotted-leaf mutant spl21 and narrowed down the causal gene locus spl21(t) to an 87-kb region in chromosome 12 by map-based cloning. RESULT We showed that a single base substitution from A to G at position 836 in the coding sequence of Oryza sativa beta-1,6-N-acetylglucosaminyl transferase (OsGCNT), effectively mutating Tyr to Cys at position 279 in the translated protein sequence, was responsible for the spotted-leaf phenotype as it could be rescued by functional complementation. Compared to the wild type IR64, the spotted-leaf mutant spl21 exhibited loss of chlorophyll, breakdown of chloroplasts, down-regulation of photosynthesis-related genes, and up-regulation of senescence associated genes, which indicated that OsGCNT regulates premature leaf senescence. Moreover, the enhanced resistance to the bacterial leaf blight pathogen Xanthomonas oryzae pv. oryzae, up-regulation of pathogenesis-related genes and increased level of jasmonate which suggested that OsGCNT is a negative regulator of defense response in rice. OsGCNT was expressed constitutively in the leaves, sheaths, stems, roots, and panicles, and OsGCNT-GFP was localized to the Golgi apparatus. High throughput RNA sequencing analysis provided further evidence for the biological effects of loss of OsGCNT function on cell death, premature leaf senescence and enhanced disease resistance in rice. Thus, we demonstrated that the novel OsGCNT regulated rice innate immunity and immunity-associated leaf senescence probably by changing the jasmonate metabolic pathway. CONCLUSIONS These results reveal that a novel gene Oryza sativa beta-1,6-N-acetylglucosaminyl transferase (OsGCNT) is responsible for the spotted-leaf mutant spl21, and OsGCNT acts as a negative-regulator mediating defense response and immunity-associated premature leaf senescence probably by activating jasmonate signaling pathway.
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Affiliation(s)
- Xia Xu
- State Key Laboratory of Rice Biology, Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006 China
| | - Zheng Chen
- State Key Laboratory of Rice Biology, Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006 China
| | - Yong-feng Shi
- State Key Laboratory of Rice Biology, Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006 China
| | - Hui-mei Wang
- State Key Laboratory of Rice Biology, Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006 China
| | - Yan He
- State Key Laboratory of Rice Biology, Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006 China
| | - Lei Shi
- State Key Laboratory of Rice Biology, Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006 China
| | - Ting Chen
- State Key Laboratory of Rice Biology, Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006 China
| | - Jian-li Wu
- State Key Laboratory of Rice Biology, Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006 China
| | - Xiao-bo Zhang
- State Key Laboratory of Rice Biology, Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou, 310006 China
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23
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Ye J, Yang YL, Wei XH, Niu XJ, Wang S, Xu Q, Yuan XP, Yu HY, Wang YP, Feng Y, Wang S. PGL3 is required for chlorophyll synthesis and impacts leaf senescence in rice. J Zhejiang Univ Sci B 2018; 19:263-273. [PMID: 29616502 DOI: 10.1631/jzus.b1700337] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Rice leaf color mutants play a great role in research about the formation and development of chloroplasts and the genetic mechanism of the chlorophyll (Chl) metabolism pathway. pgl3 is a rice leaf color mutant derived from Xiushui11 (Oryza sativa L. spp. japonica), treated with ethyl methane sulfonate (EMS). The mutant exhibited a pale-green leaf (pgl) phenotype throughout the whole development as well as reduced grain quality. Map-based cloning of PGL3 revealed that it encodes the chloroplast signal recognition particle 43 kDa protein (cpSRP43). PGL3 affected the Chl synthesis by regulating the expression levels of the Chl synthesis-associated genes. Considerable reactive oxygen species were accumulated in the leaves of pgl3, and the transcription levels of its scavenging genes were down-regulated, indicating that pgl3 can accelerate senescence. In addition, high temperatures could inhibit the plant's growth and facilitate the process of senescence in pgl3.
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Affiliation(s)
- Jing Ye
- College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China.,State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Yao-Long Yang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Xing-Hua Wei
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Xiao-Jun Niu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Shan Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Qun Xu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Xiao-Ping Yuan
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Han-Yong Yu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Yi-Ping Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Yue Feng
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Shu Wang
- College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
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24
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Genetic and Physio-Biochemical Characterization of a Novel Premature Senescence Leaf Mutant in Rice ( Oryza sativa L.). Int J Mol Sci 2018; 19:ijms19082339. [PMID: 30096885 PMCID: PMC6122088 DOI: 10.3390/ijms19082339] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 08/03/2018] [Accepted: 08/06/2018] [Indexed: 12/19/2022] Open
Abstract
Premature senescence greatly affects the yield production and the grain quality in plants, although the molecular mechanisms are largely unknown. Here, we identified a novel rice premature senescence leaf 85 (psl85) mutant from ethyl methane sulfonate (EMS) mutagenesis of cultivar Zhongjian100 (the wild-type, WT). The psl85 mutant presented a distinct dwarfism and premature senescence leaf phenotype, starting from the seedling stage to the mature stage, with decreasing level of chlorophyll and degradation of chloroplast, declined photosynthetic capacity, increased content of malonaldehyde (MDA), upregulated expression of senescence-associated genes, and disrupted reactive oxygen species (ROS) scavenging system. Moreover, endogenous abscisic acid (ABA) level was significantly increased in psl85 at the late aging phase, and the detached leaves of psl85 showed more rapid chlorophyll deterioration than that of WT under ABA treatment, indicating that PSL85 was involved in ABA-induced leaf senescence. Genetic analysis revealed that the premature senescence leaf phenotype was controlled by a single recessive nuclear gene which was finally mapped in a 47 kb region on the short arm of chromosome 7, covering eight candidate open reading frames (ORFs). No similar genes controlling a premature senescence leaf phenotype have been identified in the region, and cloning and functional analysis of the gene is currently underway.
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25
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Xu X, Ji J, Xu Q, Qi X, Weng Y, Chen X. The major-effect quantitative trait locus CsARN6.1 encodes an AAA ATPase domain-containing protein that is associated with waterlogging stress tolerance by promoting adventitious root formation. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2018; 93:917-930. [PMID: 29315927 DOI: 10.1111/tpj.13819] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/07/2017] [Accepted: 12/15/2017] [Indexed: 05/21/2023]
Abstract
In plants, the formation of hypocotyl-derived adventitious roots (ARs) is an important morphological acclimation to waterlogging stress; however, its genetic basis remains fragmentary. Here, through combined use of bulked segregant analysis-based whole-genome sequencing, SNP haplotyping and fine genetic mapping, we identified a candidate gene for a major-effect QTL, ARN6.1, that was responsible for waterlogging tolerance due to increased AR formation in the cucumber line Zaoer-N. Through multiple lines of evidence, we show that CsARN6.1 is the most possible candidate for ARN6.1 which encodes an AAA ATPase. The increased formation of ARs under waterlogging in Zaoer-N could be attributed to a non-synonymous SNP in the coiled-coil domain region of this gene. CsARN6.1 increases the number of ARs via its ATPase activity. Ectopic expression of CsARN6.1 in Arabidopsis resulted in better rooting ability and lateral root development in transgenic plants. Transgenic cucumber expressing the CsARN6.1Asp allele from Zaoer-N exhibited a significant increase in number of ARs compared with the wild type expressing the allele from Pepino under waterlogging conditions. Taken together, these data support that the AAA ATPase gene CsARN6.1 has an important role in increasing cucumber AR formation and waterlogging tolerance.
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Affiliation(s)
- Xuewen Xu
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, 225009, China
- Horticulture Department, University of Wisconsin, Madison, WI, 53706, USA
| | - Jing Ji
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
| | - Qiang Xu
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
| | - Xiaohua Qi
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
| | - Yiqun Weng
- Horticulture Department, University of Wisconsin, Madison, WI, 53706, USA
- USDA-ARS Vegetable Crops Research Unit, 1575 Linden Drive, Madison, WI, 53706, USA
| | - Xuehao Chen
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, 225009, China
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26
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Zhang XB, Feng BH, Wang HM, Xu X, Shi YF, He Y, Chen Z, Sathe AP, Shi L, Wu JL. A substitution mutation in OsPELOTA confers bacterial blight resistance by activating the salicylic acid pathway. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2018; 60:160-172. [PMID: 29193778 DOI: 10.1111/jipb.12613] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 11/24/2017] [Indexed: 05/19/2023]
Abstract
We previously reported a spotted-leaf mutant pelota (originally termed HM47) in rice displaying arrested growth and enhanced resistance to multiple races of Xanthomonas oryzae pv. oryzae. Here, we report the map-based cloning of the causal gene OsPELOTA (originally termed splHM47 ). We identified a single base substitution from T to A at position 556 in the coding sequence of OsPELOTA, effectively mutating phenylalanine to isoleucine at position 186 in the translated protein sequence. Both functional complementation and over-expression could rescue the spotted-leaf phenotype. OsPELOTA, a paralogue to eukaryotic release factor 1 (eRF1), shows high sequence similarity to Drosophila Pelota and also localizes to the endoplasmic reticulum and plasma membrane. OsPELOTA is constitutively expressed in roots, leaves, sheaths, stems, and panicles. Elevated levels of salicylic acid and decreased level of jasmonate were detected in the pelota mutant. RNA-seq analysis confirmed that genes responding to salicylic acid were upregulated in the mutant. Our results indicate that the rice PELOTA protein is involved in bacterial leaf blight resistance by activating the salicylic acid metabolic pathway.
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Affiliation(s)
- Xiao-Bo Zhang
- State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China
| | - Bao-Hua Feng
- State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China
| | - Hui-Mei Wang
- State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China
| | - Xia Xu
- State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China
| | - Yong-Feng Shi
- State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China
| | - Yan He
- State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China
| | - Zheng Chen
- State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China
| | - Atul Prakash Sathe
- State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China
| | - Lei Shi
- State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China
| | - Jian-Li Wu
- State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China
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27
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Identification and Comparative Analysis of Premature Senescence Leaf Mutants in Rice (Oryza sativa L.). Int J Mol Sci 2018; 19:ijms19010140. [PMID: 29301377 PMCID: PMC5796089 DOI: 10.3390/ijms19010140] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 12/21/2017] [Accepted: 12/29/2017] [Indexed: 11/17/2022] Open
Abstract
Premature leaf senescence negatively impacts the grain yield in the important monocot rice (Oryza sativa L.); to understand the molecular mechanism we carried out a screen for mutants with premature senescence leaves in a mutant bank generated by ethyl methane sulfonate (EMS) mutagenesis of elite indica rice ZhongJian100. Five premature senescence leaf (psl15, psl50, psl89, psl117 and psl270) mutants were identified with distinct yellowish phenotypes on leaves starting from the tillering stage to final maturation. Moreover, these mutants exhibited significantly increased malonaldehyde content, decreased chlorophyll content, reduced numbers of chloroplast and grana thylakoid, altered photosynthetic ability and expression of photosynthesis-related genes. Furthermore, the expression of senescence-related indicator OsI57 was significantly up-regulated in four mutants. Histochemical analysis indicated that cell death and reactive oxygen species (ROS) accumulation occurred in the mutants with altered activities of ROS scavenging enzymes. Both darkness and abscisic acid (ABA) treatments could induce leaf senescence and resulted in up- or down-regulation of ABA metabolism-related genes in the mutants. Genetic analysis indicated that all the premature senescence leaf mutants were controlled by single non-allelic recessive genes. The data suggested that mechanisms underlying premature leaf senescence are likely different among the mutants. The present study would facilitate us to further fine mapping, cloning and functional characterization of the corresponding genes mediating the premature leaf senescence in rice.
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28
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Mishra R, Joshi RK, Zhao K. Genome Editing in Rice: Recent Advances, Challenges, and Future Implications. FRONTIERS IN PLANT SCIENCE 2018; 9:1361. [PMID: 30283477 PMCID: PMC6156261 DOI: 10.3389/fpls.2018.01361] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 08/28/2018] [Indexed: 05/03/2023]
Abstract
Rice (Oryza sativa L.) is the major food source for more than three billion people of the world. In the last few decades, the classical, mutational, and molecular breeding approaches have brought about tremendous increase in rice productivity with the development of novel rice varieties. However, stagnation in rice yield has been reported in recent decade owing to several factors including the emergence of pests and phyto pathogens, climate change, and other environmental issues posing great threat to global food security. There is an urgent need to produce more rice and associated cereals to satisfy the mammoth task of feeding a still growing population expected to reach 9.7 billion by 2050. Advances in genomics and emergence of multiple genome-editing technologies through use of engineered site-specific nucleases (SSNs) have revolutionized the field of plant science and agriculture. Among them, the CRISPR/Cas9 system is the most advanced and widely accepted because of its simplicity, robustness, and high efficiency. The availability of huge genomic resources together with a small genome size makes rice more suitable and feasible for genetic manipulation. As such, rice has been increasingly used to test the efficiency of different types of genome editing technologies to study the functions of various genes and demonstrate their potential in genetic improvement. Recently developed approaches including CRISPR/Cpf1 system and base editors have evolved as more efficient and accurate genome editing tools which might accelerate the pace of crop improvement. In the present review, we focus on the genome editing strategies for rice improvement, thereby highlighting the applications and advancements of CRISPR/Cas9 system. This review also sheds light on the role of CRISPR/Cpf1 and base editors in the field of genome editing highlighting major challenges and future implications of these tools in rice improvement.
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Affiliation(s)
- Rukmini Mishra
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Raj Kumar Joshi
- Department of Biotechnology, Rama Devi Women’s University, Bhubaneswar, India
| | - Kaijun Zhao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
- *Correspondence: Kaijun Zhao,
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Mishra R, Joshi RK, Zhao K. Genome Editing in Rice: Recent Advances, Challenges, and Future Implications. FRONTIERS IN PLANT SCIENCE 2018; 9:1361. [PMID: 30283477 DOI: 10.33389/fpls.2018.01361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 08/28/2018] [Indexed: 05/18/2023]
Abstract
Rice (Oryza sativa L.) is the major food source for more than three billion people of the world. In the last few decades, the classical, mutational, and molecular breeding approaches have brought about tremendous increase in rice productivity with the development of novel rice varieties. However, stagnation in rice yield has been reported in recent decade owing to several factors including the emergence of pests and phyto pathogens, climate change, and other environmental issues posing great threat to global food security. There is an urgent need to produce more rice and associated cereals to satisfy the mammoth task of feeding a still growing population expected to reach 9.7 billion by 2050. Advances in genomics and emergence of multiple genome-editing technologies through use of engineered site-specific nucleases (SSNs) have revolutionized the field of plant science and agriculture. Among them, the CRISPR/Cas9 system is the most advanced and widely accepted because of its simplicity, robustness, and high efficiency. The availability of huge genomic resources together with a small genome size makes rice more suitable and feasible for genetic manipulation. As such, rice has been increasingly used to test the efficiency of different types of genome editing technologies to study the functions of various genes and demonstrate their potential in genetic improvement. Recently developed approaches including CRISPR/Cpf1 system and base editors have evolved as more efficient and accurate genome editing tools which might accelerate the pace of crop improvement. In the present review, we focus on the genome editing strategies for rice improvement, thereby highlighting the applications and advancements of CRISPR/Cas9 system. This review also sheds light on the role of CRISPR/Cpf1 and base editors in the field of genome editing highlighting major challenges and future implications of these tools in rice improvement.
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Affiliation(s)
- Rukmini Mishra
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Raj Kumar Joshi
- Department of Biotechnology, Rama Devi Women's University, Bhubaneswar, India
| | - Kaijun Zhao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
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Bi Z, Zhang Y, Wu W, Zhan X, Yu N, Xu T, Liu Q, Li Z, Shen X, Chen D, Cheng S, Cao L. ES7, encoding a ferredoxin-dependent glutamate synthase, functions in nitrogen metabolism and impacts leaf senescence in rice. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 259:24-34. [PMID: 28483051 DOI: 10.1016/j.plantsci.2017.03.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 03/01/2017] [Accepted: 03/08/2017] [Indexed: 06/07/2023]
Abstract
Glutamate synthase (GOGAT) is a key enzyme for nitrogen metabolism and ammonium assimilation in plants. In this study, an early senescence 7 (es7) mutant was identified and characterized. The leaves of the es7 mutant begin to senesce at the tillering stage about 60day after sowing, and become increasingly senescent as the plants develop at the heading stage. When es7 plants are grown under photorespiration-suppressed conditions (high CO2), the senescence phenotype and chlorophyll content are rescued. qRT-PCR analysis showed that senescence- associated genes were up-regulated significantly in es7. A map-based cloning strategy was used to identify ES7, which encodes a ferredoxin-dependent glutamate synthase (Fd-GOGAT). ES7 was expressed constitutively, and the ES7 protein was localized in chloroplast. qRT-PCR analysis indicated that several genes related to nitrogen metabolism were differentially expressed in es7. Further, we also demonstrated that chlorophyll synthesis-associated genes were significantly down-regulated in es7. In addition, when seedlings are grown under increasing nitrogen concentrations (NH4NO3) for 15days, the contents of chlorophyll a, chlorophyll b and total chlorophyll were significantly lower in es7. Our results demonstrated that ES7 is involved in nitrogen metabolism, effects chlorophyll synthesis, and may also associated with photorespiration, impacting leaf senescence in rice.
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Affiliation(s)
- Zhenzhen Bi
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Yingxin Zhang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Weixun Wu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Xiaodeng Zhan
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Ning Yu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Tingting Xu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Qunen Liu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Zhi Li
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Xihong Shen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Daibo Chen
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Shihua Cheng
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
| | - Liyong Cao
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China; Key Laboratory for Zhejiang Super Rice Research, China National Rice Research Institute, Hangzhou, Zhejiang 310006, China.
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Zong Y, Wang Y, Li C, Zhang R, Chen K, Ran Y, Qiu JL, Wang D, Gao C. Precise base editing in rice, wheat and maize with a Cas9-cytidine deaminase fusion. Nat Biotechnol 2017; 35:438-440. [PMID: 28244994 DOI: 10.1038/nbt.3811] [Citation(s) in RCA: 489] [Impact Index Per Article: 69.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 02/05/2017] [Indexed: 01/02/2023]
Abstract
Targeted base editing in plants without the need for a foreign DNA donor or double-stranded DNA cleavage would accelerate genome modification and breeding in a wide array of crops. We used a CRISPR-Cas9 nickase-cytidine deaminase fusion to achieve targeted conversion of cytosine to thymine from position 3 to 9 within the protospacer in both protoplasts and regenerated rice, wheat and maize plants at frequencies of up to 43.48%.
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Affiliation(s)
- Yuan Zong
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yanpeng Wang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Chao Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Rui Zhang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Kunling Chen
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Yidong Ran
- Genovo Biotechnology Co., Ltd, Tianjin, China
| | - Jin-Long Qiu
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Daowen Wang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Caixia Gao
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
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Deng L, Qin P, Liu Z, Wang G, Chen W, Tong J, Xiao L, Tu B, Sun Y, Yan W, He H, Tan J, Chen X, Wang Y, Li S, Ma B. Characterization and fine-mapping of a novel premature leaf senescence mutant yellow leaf and dwarf 1 in rice. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 111:50-58. [PMID: 27912109 DOI: 10.1016/j.plaphy.2016.11.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 11/18/2016] [Accepted: 11/20/2016] [Indexed: 05/24/2023]
Abstract
Leaves are the main organs in which photosynthates are produced. Leaf senescence facilitates the translocation of photosynthates and nutrients from source to sink, which is important for plant development and especially for crop yield. However, the molecular mechanism of leaf senescence is unknown. Here, we identified a mutant, yellow leaf and dwarf 1 (yld1), which exhibited decreased plant height and premature leaf senescence. Nitroblue tetrazolium and diamiobenzidine staining analyses revealed that the concentrations of reactive oxygen species were higher in yld1 leaves than in wild type leaves. The photosynthetic pigment contents were significantly decreased in yld1. The yld1 chloroplasts had collapsed and were filled with abnormal starch granules. Combining bulk segregant and MutMap gene mapping approaches, the mutation responsible for the yld1 phenotype was mapped to a 7.3 Mb centromeric region, and three non-synonymous single nucleotide polymorphisms located in three novel genes were identified in this region. The expression patterns of the three candidate genes indicated that LOC_Os06g29380 had the most potential for functional verification. Plant hormone measurements showed that salicylic acid was highly accumulated in yld1 leaves when compared with wild type leaves, and yld1 was more sensitive to salicylic acid than wild type. This work lays the foundation for understanding the molecular regulatory mechanism of leaf senescence, and may reveal new connections among the molecular pathways related to leaf senescence, starch metabolism and salicylic acid signaling.
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Affiliation(s)
- Luchang Deng
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China; Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, 610066, China
| | - Peng Qin
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China; State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China
| | - Zhi Liu
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China; Agricultural Commission of Liupanshui City, Liupanshui, Guizhou, 553000, China
| | - Geling Wang
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China
| | - Weilan Chen
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China
| | - Jianhua Tong
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Hunan, 410128, China
| | - Langtao Xiao
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Hunan, 410128, China
| | - Bin Tu
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China; State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China
| | - Yuantao Sun
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China
| | - Wei Yan
- College of Life Sciences, Peking University, Beijing, 100871, China
| | - Hang He
- College of Life Sciences, Peking University, Beijing, 100871, China
| | - Jun Tan
- Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, 610066, China
| | - Xuewei Chen
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China
| | - Yuping Wang
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China; State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China
| | - Shigui Li
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China; State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China.
| | - Bingtian Ma
- Rice Research Institute of Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China; State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu Wenjiang, Sichuan, 611130, China.
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Lin Y, Tan L, Zhao L, Sun X, Sun C. RLS3, a protein with AAA+ domain localized in chloroplast, sustains leaf longevity in rice. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2016; 58:971-982. [PMID: 27357911 DOI: 10.1111/jipb.12487] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 06/28/2016] [Indexed: 05/05/2023]
Abstract
Leaf senescence plays an important role in crop developmental processes that dramatically affect crop yield and grain quality. The genetic regulation of leaf senescence is complex, involving many metabolic and signaling pathways. Here, we identified a rapid leaf senescence 3 (rls3) mutant that displayed accelerated leaf senescence, shorter plant height and panicle length, and lower seed set rate than the wild type. Map-based cloning revealed that RLS3 encodes a protein with AAA+ domain, localizing it to chloroplasts. Sequence analysis found that the rls3 gene had a single-nucleotide substitution (G→A) at the splice site of the 10th intron/11th exon, resulting in the cleavage of the first nucleotide in 11th exon and premature termination of RLS3 protein translation. Using transmission electron microscope, the chloroplasts of the rls3 mutant were observed to degrade much faster than those of the wild type. The investigation of the leaf senescence process under dark incubation conditions further revealed that the rls3 mutant displayed rapid leaf senescence. Thus, the RLS3 gene plays key roles in sustaining the normal growth of rice, while loss of function in RLS3 leads to rapid leaf senescence. The identification of RLS3 will be helpful to elucidate the mechanisms involved in leaf senescence in rice.
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Affiliation(s)
- Yanhui Lin
- State Key Laboratory of Plant Physiology and Biochemistry, National Center for Evaluation of Agricultural Wild Plants (Rice), MOE Key Laboratory of Crop Heterosis and Utilization, Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, China
| | - Lubin Tan
- State Key Laboratory of Plant Physiology and Biochemistry, National Center for Evaluation of Agricultural Wild Plants (Rice), MOE Key Laboratory of Crop Heterosis and Utilization, Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, China
| | - Lei Zhao
- State Key Laboratory of Plant Physiology and Biochemistry, National Center for Evaluation of Agricultural Wild Plants (Rice), MOE Key Laboratory of Crop Heterosis and Utilization, Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, China
| | - Xianyou Sun
- State Key Laboratory of Plant Physiology and Biochemistry, National Center for Evaluation of Agricultural Wild Plants (Rice), MOE Key Laboratory of Crop Heterosis and Utilization, Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, China
| | - Chuanqing Sun
- State Key Laboratory of Plant Physiology and Biochemistry, National Center for Evaluation of Agricultural Wild Plants (Rice), MOE Key Laboratory of Crop Heterosis and Utilization, Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, China
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Oryza sativa Chloroplast Signal Recognition Particle 43 (OscpSRP43) Is Required for Chloroplast Development and Photosynthesis. PLoS One 2015; 10:e0143249. [PMID: 26600124 PMCID: PMC4657901 DOI: 10.1371/journal.pone.0143249] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 11/02/2015] [Indexed: 12/26/2022] Open
Abstract
A rice chlorophyll-deficient mutant w67 was isolated from an ethyl methane sulfonate (EMS)-induced IR64 (Oryza sativa L. ssp. indica) mutant bank. The mutant exhibited a distinct yellow-green leaf phenotype in the whole plant growth duration with significantly reduced levels of chlorophyll and carotenoid, impaired chloroplast development and lowered capacity of photosynthesis compared with the wild-type IR64. Expression of a number of genes associated with chlorophyll metabolism, chloroplast biogenesis and photosynthesis was significantly altered in the mutant. Genetic analysis indicated that the yellow-green phenotype was controlled by a single recessive nuclear gene located on the short arm of chromosome 3. Using map-based strategy, the mutation was isolated and predicted to encode a chloroplast signal recognition particle 43 KD protein (cpSRP43) with 388 amino acid residuals. A single base substitution from A to T at position 160 resulted in a premature stop codon. OscpSRP43 was constitutively expressed in various organs with the highest level in the leaf. Functional complementation could rescue the mutant phenotype and subcellular localization showed that the cpSRP43:GFP fusion protein was targeted to the chloroplast. The data suggested that Oryza sativa cpSRP43 (OscpSRP43) was required for the normal development of chloroplasts and photosynthesis in rice.
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