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Guo B, Jin X, Chen J, Xu H, Zhang M, Lu X, Wu R, Zhao Y, Guo Y, An Y, Li S. ATP-dependent DNA helicase (TaDHL), a Novel Reduced-Height (Rht) Gene in Wheat. Genes (Basel) 2022; 13:genes13060979. [PMID: 35741741 PMCID: PMC9222645 DOI: 10.3390/genes13060979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 02/01/2023] Open
Abstract
In wheat, a series of dwarf and semi-dwarf plant varieties have been developed and utilized worldwide since the 1960s and caused the ‘Green Revolution’. To date, 25 reduced-height (Rht) genes have been identified, but only several genes for plant height (PH) have been isolated previously. In this study, we identified a candidate gene, ATP-dependent DNA helicase (TaDHL-7B), for PH via QTL mapping and genome-wide association study (GWAS) methods. We knocked out this gene using the CRISPR/Cas9 system in variety ‘Fielder’. Two homozygous mutant genotypes, AAbbDD (−5 bp) and AAbbDD (−1 bp), were obtained in the T2 generation. The PH values of AAbbDD (−5 bp) and AAbbDD (−1 bp) were significantly reduced compared with the wild-type (WT, ‘Fielder’), indicating that TaDHL-7B is a novel Rht gene that controls the PH. This is the first time that a PH gene of wheat has been isolated with a non-hormone pathway, providing a new insight into the genetic control of PH. The TaDHL gene reduced the PH without a yield penalty. It could be used to improve the lodging resistance and yield in wheat breeding programs.
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Affiliation(s)
- Baojin Guo
- State Key Laboratory of Crop Biology, Tai’an 271018, China; (B.G.); (X.J.); (J.C.); (H.X.); (M.Z.); (X.L.); (Y.Z.); (Y.G.); (Y.A.)
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
| | - Xuemei Jin
- State Key Laboratory of Crop Biology, Tai’an 271018, China; (B.G.); (X.J.); (J.C.); (H.X.); (M.Z.); (X.L.); (Y.Z.); (Y.G.); (Y.A.)
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
- Rizhao Academy of Agricultural Science, Rizhao 276826, China
| | - Jingchuan Chen
- State Key Laboratory of Crop Biology, Tai’an 271018, China; (B.G.); (X.J.); (J.C.); (H.X.); (M.Z.); (X.L.); (Y.Z.); (Y.G.); (Y.A.)
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
| | - Huiyan Xu
- State Key Laboratory of Crop Biology, Tai’an 271018, China; (B.G.); (X.J.); (J.C.); (H.X.); (M.Z.); (X.L.); (Y.Z.); (Y.G.); (Y.A.)
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
| | - Mingxia Zhang
- State Key Laboratory of Crop Biology, Tai’an 271018, China; (B.G.); (X.J.); (J.C.); (H.X.); (M.Z.); (X.L.); (Y.Z.); (Y.G.); (Y.A.)
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
| | - Xing Lu
- State Key Laboratory of Crop Biology, Tai’an 271018, China; (B.G.); (X.J.); (J.C.); (H.X.); (M.Z.); (X.L.); (Y.Z.); (Y.G.); (Y.A.)
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
| | - Rugang Wu
- Dezhou Academy of Agricultural Science, Dezhou 253015, China;
| | - Yan Zhao
- State Key Laboratory of Crop Biology, Tai’an 271018, China; (B.G.); (X.J.); (J.C.); (H.X.); (M.Z.); (X.L.); (Y.Z.); (Y.G.); (Y.A.)
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
| | - Ying Guo
- State Key Laboratory of Crop Biology, Tai’an 271018, China; (B.G.); (X.J.); (J.C.); (H.X.); (M.Z.); (X.L.); (Y.Z.); (Y.G.); (Y.A.)
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
| | - Yanrong An
- State Key Laboratory of Crop Biology, Tai’an 271018, China; (B.G.); (X.J.); (J.C.); (H.X.); (M.Z.); (X.L.); (Y.Z.); (Y.G.); (Y.A.)
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
| | - Sishen Li
- State Key Laboratory of Crop Biology, Tai’an 271018, China; (B.G.); (X.J.); (J.C.); (H.X.); (M.Z.); (X.L.); (Y.Z.); (Y.G.); (Y.A.)
- College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
- Correspondence: ; Tel.: +86-0538-8246503; Fax: +86-0538-8242226
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Xu Z, Zhang J, Cheng X, Tang Y, Gong Z, Gu M, Yu H. COM1, a factor of alternative non-homologous end joining, lagging behind the classic non-homologous end joining pathway in rice somatic cells. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:140-153. [PMID: 32022972 DOI: 10.1111/tpj.14715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 01/15/2020] [Accepted: 01/29/2020] [Indexed: 06/10/2023]
Abstract
The role of rice (Oryza sativa) COM1 in meiotic homologous recombination (HR) is well understood, but its part in somatic double-stranded break (DSB) repair remains unclear. Here, we show that for rice plants COM1 conferred tolerance against DNA damage caused by the chemicals bleomycin and mitomycin C, while the COM1 mutation did not compromise HR efficiencies and HR factor (RAD51 and RAD51 paralogues) localization to irradiation-induced DSBs. Similar retarded growth at the post-germination stage was observed in the com1-2 mre11 double mutant and the mre11 single mutant, while combined mutations in COM1 with the HR pathway gene (RAD51C) or classic non-homologous end joining (NHEJ) pathway genes (KU70, KU80, and LIG4) caused more phenotypic defects. In response to γ-irradiation, COM1 was loaded normally onto DSBs in the ku70 mutant, but could not be properly loaded in the MRE11RNAi plant and in the wortmannin-treated wild-type plant. Under non-irradiated conditions, more DSB sites were occupied by factors (MRE11, COM1, and LIG4) than RAD51 paralogues (RAD51B, RAD51C, and XRCC3) in the nucleus of wild-type; protein loading of COM1 and XRCC3 was increased in the ku70 mutant. Therefore, quite differently to its role for HR in meiocytes, rice COM1 specifically acts in an alternative NHEJ pathway in somatic cells, based on the Mre11-Rad50-Nbs1 (MRN) complex and facilitated by PI3K-like kinases. NHEJ factors, not HR factors, preferentially load onto endogenous DSBs, with KU70 restricting DSB localization of COM1 and XRCC3 in plant somatic cells.
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Affiliation(s)
- Zhan Xu
- Key Laboratory of Plant Functional Genomics of Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai, 200032, China
| | - Jianxiang Zhang
- Key Laboratory of Plant Functional Genomics of Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Xinjie Cheng
- Key Laboratory of Plant Functional Genomics of Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Yujie Tang
- Key Laboratory of Plant Functional Genomics of Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Zhiyun Gong
- Key Laboratory of Plant Functional Genomics of Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Minghong Gu
- Key Laboratory of Plant Functional Genomics of Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Hengxiu Yu
- Key Laboratory of Plant Functional Genomics of Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
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Byun MY, Cui LH, Lee H, Kim WT. Telomere association of Oryza sativa telomere repeat-binding factor like 1 and its roles in telomere maintenance and development in rice, Oryza sativa L. BMB Rep 2018. [PMID: 29936933 PMCID: PMC6283022 DOI: 10.5483/bmbrep.2018.51.11.122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Telomeres are specialized nucleoprotein complexes that function to protect eukaryotic chromosomes from recombination and erosion. Several telomere binding proteins (TBPs) have been characterized in higher plants, but their detailed in vivo functions at the plant level are largely unknown. In this study, we identified and characterized OsTRFL1 (Oryza sativa Telomere Repeat-binding Factor Like 1) in rice, a monocot model crop. Although OsTRFL1 did not directly bind to telomere repeats (TTTAGGG)4in vitro, it was associated with telomeric sequences in planta. OsTRFL1 interacted with rice TBPs, such as OsTRBF1 and RTBP1, in yeast and plant cells as well as in vitro. Thus, it seems likely that the association of OsTRFL1 with other TBPs enables OsTRFL1 to bind to telomeres indirectly. T-DNA inserted OsTRFL1 knock-out mutant rice plants displayed significantly longer telomeres (6–25 kb) than those (5–12 kb) in wild-type plants, indicating that OsTRFL1 is a negative factor for telomere lengthening. The reduced levels of OsTRFL1 caused serious developmental defects in both vegetative and reproductive organs of rice plants. These results suggest that OsTRFL1 is an essential factor for the proper maintenance of telomeres and normal development of rice.
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Affiliation(s)
- Mi Young Byun
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon 21990, Korea
| | - Li Hua Cui
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Korea
| | - Hyoungseok Lee
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon 21990, Korea
| | - Woo Taek Kim
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Korea
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