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Shen E, Zhao T, Zhu QH. Are miRNAs applicable for balancing crop growth and defense trade-off? THE NEW PHYTOLOGIST 2024. [PMID: 38952260 DOI: 10.1111/nph.19939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 06/13/2024] [Indexed: 07/03/2024]
Abstract
Securing agricultural supplies for the increasing population without negative impacts on environment demands new crop varieties with higher yields, better quality, and stronger stress resilience. But breeding such super crop varieties is restrained by growth-defense (G-D) trade-off. MicroRNAs (miRNAs) are versatile regulators of plant growth and immune responses, with several being demonstrated to simultaneously regulate crop growth and defense against biotic stresses and to balance G-D trade-off. Increasing evidence also links miRNAs to the metabolism and signaling of phytohormones, another type of master regulator of plant growth and defense. Here, we synthesize the reported functions of miRNAs in crop growth, development, and responses to bio-stressors, summarize the regulatory scenarios of miRNAs based on their relationship with target(s), and discuss how miRNAs, particularly those involved in crosstalk with phytohormones, can be applied in balancing G-D trade-off in crops. We also propose several open questions to be addressed for adopting miRNAs in balancing crop G-D trade-off.
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Affiliation(s)
- Enhui Shen
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- The Rural Development Academy, Zhejiang University, Hangzhou, 310058, China
| | - Tianlun Zhao
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- Institute of Hainan, Zhejiang University, Hangzhou, 310058, China
| | - Qian-Hao Zhu
- CSIRO Agriculture and Food, GPO Box 1700, Canberra, ACT, 2601, Australia
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2
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Rong C, Zhang R, Liu Y, Chang Z, Liu Z, Ding Y, Ding C. Purine permease (PUP) family gene PUP11 positively regulates the rice seed setting rate by influencing seed development. PLANT CELL REPORTS 2024; 43:112. [PMID: 38568250 DOI: 10.1007/s00299-024-03193-z] [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: 12/24/2023] [Accepted: 03/06/2024] [Indexed: 04/05/2024]
Abstract
KEY MESSAGE Purine permease PUP11 is essential for rice seed development, regulates the seed setting rate, and influences the cytokinin content, sugar transport, and starch biosynthesis during grain development. The distribution of cytokinins in plant tissues determines plant growth and development and is regulated by several cytokinin transporters, including purine permease (PUP). Thirteen PUP genes have been identified within the rice genome; however, the functions of most of these genes remain poorly understood. We found that pup11 mutants showed extremely low seed setting rates and a unique filled seed distribution. Moreover, seed formation arrest in these mutants was associated with the disappearance of accumulated starch 10 days after flowering. PUP11 has two major transcripts with different expression patterns and subcellular locations, and further studies revealed that they have redundant positive roles in regulating the seed setting rate. We also found that type-A Response Regulator (RR) genes were upregulated in the developing grains of the pup11 mutant compared with those in the wild type. The results also showed that PUP11 altered the expression of several sucrose transporters and significantly upregulated certain starch biosynthesis genes. In summary, our results indicate that PUP11 influences the rice seed setting rate by regulating sucrose transport and starch accumulation during grain filling. This research provides new insights into the relationship between cytokinins and seed development, which may help improve cereal yield.
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Affiliation(s)
- Chenyu Rong
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Renren Zhang
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Yuexin Liu
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Zhongyuan Chang
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Ziyu Liu
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Yanfeng Ding
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, 210095, People's Republic of China.
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored By Province and Ministry, Nanjing, 210095, People's Republic of China.
| | - Chengqiang Ding
- College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, 210095, People's Republic of China.
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored By Province and Ministry, Nanjing, 210095, People's Republic of China.
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3
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Li J, Wen X, Zhang Q, Tian Y, Pu Y, Wang J, Liu B, Du Y, Dai S. cla-miR164- NO APICAL MERISTEM ( ClNAM) regulates the inflorescence architecture development of Chrysanthemum lavandulifolium. HORTICULTURE RESEARCH 2024; 11:uhae039. [PMID: 38623074 PMCID: PMC11017518 DOI: 10.1093/hr/uhae039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 01/28/2024] [Indexed: 04/17/2024]
Abstract
Chrysanthemum × morifolium has great ornamental and economic value on account of its exquisite capitulum. However, previous studies have mainly focused on the corolla morphology of the capitulum. Such an approach cannot explain the variable inflorescence architecture of the chrysanthemum. Previous research from our group has shown that NO APICAL MERISTEM (ClNAM) is likely to function as a hub gene in capitulum architecture in the early development stage. In the present study, ClNAM was used to investigate the function of these boundary genes in the capitulum architecture of Chrysanthemum lavandulifolium, a closely related species of C. × morifolium in the genus. Modification of ClNAM in C. lavandulifolium resulted in an advanced initiation of the floral primordium at the capitulum. As a result, the receptacle morphology was altered and the number of florets decreased. The ray floret corolla was shortened, but the disc floret was elongated. The number of capitula increased significantly, arranged in more densely compounded corymbose synflorescences. The yeast and luciferase reporter system revealed that ClAP1, ClRCD2, and ClLBD18 target and activate ClNAM. Subsequently, ClNAM targets and activates ClCUC2a/c, which regulates the initiation of floral and inflorescence in C. lavandulifolium. ClNAM was also targeted and cleaved by cla-miR164 in this process. In conclusion, this study established a boundary gene regulatory network with cla-miR164-ClNAM as the hub. This network not only influences the architecture of capitulum, but also affects compound corymbose synflorescences of the C. lavandulifolium. These results provide new insights into the mechanisms regulating inflorescence architecture in chrysanthemum.
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Affiliation(s)
- Junzhuo Li
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, School of Landscape Architecture, Beijing Forestry University, 35 East Qinghua Road, Beijing, 100083, China
| | - Xiaohui Wen
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, School of Landscape Architecture, Beijing Forestry University, 35 East Qinghua Road, Beijing, 100083, China
- Flower Research and Development Center, Zhejiang Academy of Agricultural Sciences, Hangzhou 311202, China
| | - Qiuling Zhang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, School of Landscape Architecture, Beijing Forestry University, 35 East Qinghua Road, Beijing, 100083, China
| | - Yuankai Tian
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, School of Landscape Architecture, Beijing Forestry University, 35 East Qinghua Road, Beijing, 100083, China
| | - Ya Pu
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, School of Landscape Architecture, Beijing Forestry University, 35 East Qinghua Road, Beijing, 100083, China
| | - Jiaying Wang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, School of Landscape Architecture, Beijing Forestry University, 35 East Qinghua Road, Beijing, 100083, China
| | - Bo Liu
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, School of Landscape Architecture, Beijing Forestry University, 35 East Qinghua Road, Beijing, 100083, China
| | - Yihan Du
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, School of Landscape Architecture, Beijing Forestry University, 35 East Qinghua Road, Beijing, 100083, China
| | - Silan Dai
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, School of Landscape Architecture, Beijing Forestry University, 35 East Qinghua Road, Beijing, 100083, China
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4
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Segura M, García A, Gamarra G, Benítez Á, Iglesias-Moya J, Martínez C, Jamilena M. An miR164-resistant mutation in the transcription factor gene CpCUC2B enhances carpel arrest and ectopic boundary specification in Cucurbita pepo flower development. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:1948-1966. [PMID: 38066672 DOI: 10.1093/jxb/erad486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 12/08/2023] [Indexed: 03/28/2024]
Abstract
The sex determination process in cucurbits involves the control of stamen or carpel development during the specification of male or female flowers from a bisexual floral meristem, a function coordinated by ethylene. A gain-of-function mutation in the miR164-binding site of CpCUC2B, ortholog of the Arabidopsis transcription factor gene CUC2, not only produced ectopic floral meristems and organs, but also suppressed the development of carpels and promoted the development of stamens. The cuc2b mutation induced the transcription of CpCUC2B in the apical shoots of plants after female flowering but repressed other CUC genes regulated by miR164, suggesting a conserved functional redundancy of these genes in the development of squash flowers. The synergistic androecious phenotype of the double mutant between cuc2b and etr2b, an ethylene-insensitive mutation that enhances the production of male flowers, demonstrated that CpCUC2B arrests the development of carpels independently of ethylene and CpWIP1B. The transcriptional regulation of CpCUC1, CpCUC2, and ethylene genes in cuc2b and ethylene mutants also confirms this conclusion. However, the epistasis of cuc2b over aco1a, a mutation that suppresses stamen arrest in female flowers, and the down-regulation of CpACS27A in cuc2b female apical shoots, indicated that CpCUC2B promotes stamen development by suppressing the late ethylene production.
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Affiliation(s)
- María Segura
- Department of Biology and Geology. Agri-food Campus of International Excellence (CeiA3) and Research Center CIAIMBITAL, University of Almería, 04120 Almería, Spain
| | - Alicia García
- Department of Biology and Geology. Agri-food Campus of International Excellence (CeiA3) and Research Center CIAIMBITAL, University of Almería, 04120 Almería, Spain
| | - Germán Gamarra
- Department of Biology and Geology. Agri-food Campus of International Excellence (CeiA3) and Research Center CIAIMBITAL, University of Almería, 04120 Almería, Spain
| | - Álvaro Benítez
- Department of Biology and Geology. Agri-food Campus of International Excellence (CeiA3) and Research Center CIAIMBITAL, University of Almería, 04120 Almería, Spain
| | - Jessica Iglesias-Moya
- Department of Biology and Geology. Agri-food Campus of International Excellence (CeiA3) and Research Center CIAIMBITAL, University of Almería, 04120 Almería, Spain
| | - Cecilia Martínez
- Department of Biology and Geology. Agri-food Campus of International Excellence (CeiA3) and Research Center CIAIMBITAL, University of Almería, 04120 Almería, Spain
| | - Manuel Jamilena
- Department of Biology and Geology. Agri-food Campus of International Excellence (CeiA3) and Research Center CIAIMBITAL, University of Almería, 04120 Almería, Spain
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Wang D, Chen L, Liu C, Wang H, Liu Z, Ji X, He N, Xin Y. Mno-miR164a and MnNAC100 regulate the resistance of mulberry to Botrytis cinerea. PHYSIOLOGIA PLANTARUM 2024; 176:e14309. [PMID: 38659152 DOI: 10.1111/ppl.14309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/01/2024] [Accepted: 04/05/2024] [Indexed: 04/26/2024]
Abstract
Although microRNAs (miRNAs) regulate the defense response of a variety of plant species against a variety of pathogenic fungi, the involvement of miRNAs in mulberry's defense against Botrytis cinerea has not yet been documented. In this study, we identified responsive B. cinerea miRNA mno-miR164a in mulberry trees. After infection with B. cinerea, the expression of mno-miR164a was reduced, which was fully correlated with the upregulation of its target gene, MnNAC100, responsible for encoding a transcription factor. By using transient infiltration/VIGS mulberry that overexpressed mno-miR164a or knocked-down MnNAC100, our study revealed a substantial enhancement in mulberry's resistance to B. cinerea when mno-miR164a was overexpressed or MnNAC100 expression was suppressed. This enhancement was accompanied by increased catalase (CAT) activity and reduced malondialdehyde (MDA) content. In addition, mno-miR164a-mediated inhibition of MnNAC100 enhanced the expression of a cluster of defense-related genes in transgenic plants upon exposure to B. cinerea. Meanwhile, MnNAC100 acts as a transcriptional repressor, directly suppressing the expression of MnPDF1.2. Our study indicated that the mno-miR164a-MnNAC100 regulatory module manipulates the defense response of mulberry to B. cinerea infection. This discovery has great potential in breeding of resistant varieties and disease control.
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Affiliation(s)
- Donghao Wang
- College of Forestry, Shandong Agricultural University, Tai'an, China
| | - Lin Chen
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, China
| | - Chaorui Liu
- College of Forestry, Shandong Agricultural University, Tai'an, China
| | - Hairui Wang
- College of Forestry, Shandong Agricultural University, Tai'an, China
| | - Zixuan Liu
- College of Forestry, Shandong Agricultural University, Tai'an, China
| | - Xianling Ji
- College of Forestry, Shandong Agricultural University, Tai'an, China
| | - Ningjia He
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, China
| | - Youchao Xin
- College of Forestry, Shandong Agricultural University, Tai'an, China
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6
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Liu J, Shi X, Zhong T, Jie W, Xu R, Ding Y, Ding C. PINOID and PIN-FORMED Paralogous Genes Are Required for Leaf Morphogenesis in Rice. PLANT & CELL PHYSIOLOGY 2023; 64:1146-1158. [PMID: 37540575 DOI: 10.1093/pcp/pcad078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 06/28/2023] [Accepted: 07/19/2023] [Indexed: 08/06/2023]
Abstract
Auxin plays an essential role in modulating leaf development. However, its role in leaf development in rice (Oryza sativa L.) remains largely unknown. In this study, we found that PINOID (OsPID) and two Sister-of-PIN1s, termed PIN-FORMED1c (OsPIN1c) and OsPIN1d, are necessary for rice leaf development. The ospin1c ospin1d null mutant lines presented severe defects in leaf morphogenesis, including drooping and semi-drooping blades, an abnormally thickened sheath and lamina joint, and fused leaves with absent ligules and auricles. Loss-of-function ospid mutants displayed generally similar leaf morphology but lacked leaf fusion. Interestingly, misshaped leaf genesis displayed a preference for being ipsilateral. In addition, OsPIN1c and OsPID were commonly localized in the initiating leaf primordia. Furthermore, accompanied by the more severe organ morphogenesis in the ospin1c ospin1d ospid triple mutant, RNA sequencing analysis revealed that many genes essential for leaf development have an altered expression level. Together, this study furthers our understanding of the role auxin transport plays during leaf development in monocot rice.
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Affiliation(s)
- Jiajun Liu
- College of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, People's Republic of China
- Rice Research Institute, Jiangxi Academy of Agricultural Sciences, No. 602 Nanlian Road, Nanchang 330200, People's Republic of China
| | - Xi'an Shi
- College of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, People's Republic of China
| | - Tianhui Zhong
- College of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, People's Republic of China
| | - Wanrong Jie
- College of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, People's Republic of China
| | - Ruihan Xu
- College of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, People's Republic of China
| | - Yanfeng Ding
- College of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, People's Republic of China
- Key Laboratory of Crop Physiology, Ecology and Production Management, Ministry of Agriculture, No. 1 Weigang, Nanjing 210095, People's Republic of China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, People's Republic of China
| | - Chengqiang Ding
- College of Agriculture, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, People's Republic of China
- Key Laboratory of Crop Physiology, Ecology and Production Management, Ministry of Agriculture, No. 1 Weigang, Nanjing 210095, People's Republic of China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing Agricultural University, No. 1 Weigang, Nanjing 210095, People's Republic of China
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Wang J, Li R, Chen Y, Wang X, Shi Q, Du K, Zheng B, Shi X. Expressing a Short Tandem Target Mimic (STTM) of miR164b/e-3p enhances poplar leaf serration by co-regulating the miR164-NAC module. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107790. [PMID: 37348390 DOI: 10.1016/j.plaphy.2023.107790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 05/05/2023] [Accepted: 05/20/2023] [Indexed: 06/24/2023]
Abstract
MicroRNAs (miRNAs) are short non-coding RNAs (21-24 nt) that play important roles in plant growth and development. The miR164 family is highly conserved in plants and the miR164-NAM/ATAF/CUC (NAC) module is validated to regulate leaf and flower development, lateral root initiation and stress response. However, our knowledge of its role in Populus remains limited. In this study, two mature miRNA species, miR164e-5p and miR164e-3p, were identified in Populus deltoides. Their nucleotide sequences were identical to those of miR164a/b/c/d/e-5p and miR164b/e-3p in P. tremula × P. alba clone 717-1B4 (hereinafter poplar 717), respectively. Transgenic plants of poplar 717, including overexpression lines (35S::pri-miR164e) and Short Tandem Target Mimic lines (STTM-miR164a-d,e-5p and STTM-miR164b/e-3p), were generated to study the roles of miR164e-5p and miR164e-3p in poplar. Compared with poplar 717, the leaf margins of 35S::pri-miR164e lines were smoother, the leaves of STTM-miR164b/e-3p line were more serrated, while the leaf morphology of STTM-miR164a-d,e-5p lines had no obvious change. In addition, both 35S::pri-miR164e and STTM-miR164b/e-3p plants had a dwarf phenotype. Expressions of miR164a-d,e-5p target genes, including PtaCUC2a, PtaCUC2b and PtaORE1, was significantly reduced in the apex of 35S::pri-miR164e lines. Green fluorescent protein (GFP) reporter assay showed that PtaCUC2a/2b and PtaORE1 were cleaved by miR164a-d,e-5p, and the cleavage was inhibited by STTM-miR164b/e-3p. Therefore, miR164b/e-3p may cooperate with miR164a-d,e-5p to regulate certain NAC members, such as PtaCUC2a/2b and PtaORE1, thereby regulating leaf development and plant growth in poplar. Our findings add new insights into the mechanisms by which the miR164-NAC module regulates plant development.
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Affiliation(s)
- Jieyu Wang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China; Poplar Research Center, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ruyi Li
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China; Poplar Research Center, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yiming Chen
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiaohui Wang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China; Poplar Research Center, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qiaofang Shi
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China
| | - Kebing Du
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China; Poplar Research Center, Huazhong Agricultural University, Wuhan, 430070, China; Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan, 430070, China
| | - Bo Zheng
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China; Poplar Research Center, Huazhong Agricultural University, Wuhan, 430070, China; Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xueping Shi
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China; Poplar Research Center, Huazhong Agricultural University, Wuhan, 430070, China; Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan, 430070, China.
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Yang Q, Yuan C, Cong T, Zhang Q. The Secrets of Meristems Initiation: Axillary Meristem Initiation and Floral Meristem Initiation. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091879. [PMID: 37176937 PMCID: PMC10181267 DOI: 10.3390/plants12091879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/29/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023]
Abstract
The branching phenotype is an extremely important agronomic trait of plants, especially for horticultural crops. It is not only an important yield character of fruit trees, but also an exquisite ornamental trait of landscape trees and flowers. The branching characteristics of plants are determined by the periodic initiation and later development of meristems, especially the axillary meristem (AM) in the vegetative stage and the floral meristem (FM) in the reproductive stage, which jointly determine the above-ground plant architecture. The regulation of meristem initiation has made great progress in model plants in recent years. Meristem initiation is comprehensively regulated by a complex regulatory network composed of plant hormones and transcription factors. However, as it is an important trait, studies on meristem initiation in horticultural plants are very limited, and the mechanism of meristem initiation regulation in horticultural plants is largely unknown. This review summarizes recent research advances in axillary meristem regulation and mainly reviews the regulatory networks and mechanisms of AM and FM initiation regulated by transcription factors and hormones. Finally, considering the existing problems in meristem initiation studies and the need for branching trait improvement in horticulture plants, we prospect future studies to accelerate the genetic improvement of the branching trait in horticulture plants.
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Affiliation(s)
- Qingqing Yang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing 100083, China
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Cunquan Yuan
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing 100083, China
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Tianci Cong
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing 100083, China
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Qixiang Zhang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing 100083, China
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
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9
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Zhou T, Cao L, Hu K, Yu X, Qu S. miR164-NAC21/22 module regulates the resistance of Malus hupehensis against Alternaria alternata by controlling jasmonic acid signaling. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 330:111635. [PMID: 36787851 DOI: 10.1016/j.plantsci.2023.111635] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 01/06/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Apple leaf spot disease caused by Alternaria alternata apple pathotype (A. alternata AP) is one of the most severe fungal diseases affecting apple cultivation. Transcription factors are involved in various disease-resistance responses, and many of them are regulated by miRNAs. Here, we performed RNA-Seq to investigate gene expression changes during the defense response of Malus hupehensis against A. alternata AP. NAC21/22 was induced upon A. alternata AP infection and silenced by miR164 via direct mRNA cleavage. Contrasting expression patterns were noted between mature miR164 and NAC21/22 during infection. Contrary to NAC21/22 silencing, transiently overexpressing NAC21/22 in M. hupehensis alleviated disease symptoms on 'gala' leaves, impeded A. alternata AP growth, and promoted jasmonic acid (JA) signaling-related gene expression. Importantly, transient miR164f overexpression in 'gala' leaves enhanced A. alternata AP sensitivity, due perhaps to NAC21/22 downregulation, whereas miR164 suppression produced an opposite effect. In summary, the miR164-NAC21/22 module plays a pivotal role in apple resistance against A. alternata AP by regulating JA signaling.
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Affiliation(s)
- Tingting Zhou
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China.
| | - Lifang Cao
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China.
| | - Kaixu Hu
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China.
| | - Xinyi Yu
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China.
| | - Shenchun Qu
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China.
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10
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Liu J, Shi X, Chang Z, Ding Y, Ding C. Auxin Efflux Transporters OsPIN1c and OsPIN1d Function Redundantly in Regulating Rice (Oryza sativa L.) Panicle Development. PLANT & CELL PHYSIOLOGY 2022; 63:305-316. [PMID: 34888695 DOI: 10.1093/pcp/pcab172] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 12/09/2021] [Indexed: 06/13/2023]
Abstract
The essential role of auxin in plant growth and development is well known. Pathways related to auxin synthesis, transport and signaling have been extensively studied in recent years, and the PIN-FORMED (PIN) protein family has been identified as being pivotal for polar auxin transport and distribution. However, research focused on the functional characterization of PIN proteins in rice is still lacking. In this study, we investigated the expression and function of OsPIN1c and OsPIN1d in the japonica rice variety (Nipponbare) using gene knockout and high-throughput RNA sequencing analysis. The results showed that OsPIN1c and OsPIN1d were mainly expressed in young panicles and exhibited a redundant function. Furthermore, OsPIN1c or OsPIN1d loss-of-function mutants presented a mild phenotype compared with the wild type. However, in addition to significantly decreased plant height and tiller number, panicle development was severely disrupted in double-mutant lines of OsPIN1c and OsPIN1d. Severe defects included smaller inflorescence meristem and panicle sizes, fewer primary branches, elongated bract leaves, non-degraded hair and no spikelet growth. Interestingly, ospin1cd-3, a double-mutant line with functional retention of OsPIN1d, showed milder defects than those observed in other mutants. Additionally, several critical regulators of reproductive development, such as OsPID, LAX1, OsMADS1 and OsSPL14/IPA1, were differentially expressed in ospin1c-1 ospin1d-1, supporting the hypothesis that OsPIN1c and OsPIN1d are involved in regulating panicle development. Therefore, this study provides novel insights into the auxin pathways that regulate plant reproductive development in monocots.
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Affiliation(s)
- Jiajun Liu
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, People's Republic of China
| | - Xi'an Shi
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, People's Republic of China
| | - Zhongyuan Chang
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, People's Republic of China
| | - Yanfeng Ding
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, People's Republic of China
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, No.1 Weigang, Nanjing 210095, People's Republic of China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, People's Republic of China
| | - Chengqiang Ding
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, People's Republic of China
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, No.1 Weigang, Nanjing 210095, People's Republic of China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, People's Republic of China
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11
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Xu W, Zhu W, Yang L, Liang W, Li H, Yang L, Chen M, Luo Z, Huang G, Duan L, Dreni L, Zhang D. SMALL REPRODUCTIVE ORGANS, a SUPERMAN-like transcription factor, regulates stamen and pistil growth in rice. THE NEW PHYTOLOGIST 2022; 233:1701-1718. [PMID: 34761379 DOI: 10.1111/nph.17849] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 10/28/2021] [Indexed: 06/13/2023]
Abstract
Organ size is determined mainly by cell division and cell expansion. Several genetic factors regulating development of plant lateral organs have been characterized, but those involved in determining reproductive organ size and separation in rice (Oryza sativa) remain unknown. We have isolated the rice gene SMALL REPRODUCTIVE ORGANS (SRO) encoding a nucleus-localized Cys2His2 (C2 H2 ) zinc finger protein orthologous to Arabidopsis transcription factor (TF) SUPERMAN (SUP). Combined developmental, genetic, histological and transcriptomic analyses were used to determine the function of SRO in regulating reproductive organ size. SRO affects genes involved in cell division, cell expansion and phytohormone signalling in the rice flower. SRO is specifically expressed in the first stages of stamen filament development to regulate their correct formation and separation. In addition, SRO noncell-autonomously regulates the size and functionality of male and female reproductive organs. The B-class MADS-box gene OsMADS16/SPW1 is epistatic to SRO, whereas SRO regulates reproductive organ specification and floral meristem determinacy synergistically with C-class genes OsMADS3 and OsMADS58. These findings provide insights into how an evolutionarily conserved TF has a pivotal role in reproductive organ development in core eudicots and monocots, through partially conserved expression, function and regulatory network.
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Affiliation(s)
- Wei Xu
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wanwan Zhu
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Liu Yang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wanqi Liang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hui Li
- National Key Laboratory of Plant Molecular Genetics (NKLPMG), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology (SIPPE), Chinese Academy of Sciences (CAS), Shanghai, 200032, China
| | - Li Yang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Mingjiao Chen
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhijing Luo
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Guoqiang Huang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lei Duan
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ludovico Dreni
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia
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12
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Borna RS, Murchie EH, Pyke KA, Roberts JA, Gonzalez‐Carranza ZH. The rice EP3 and OsFBK1 E3 ligases alter plant architecture and flower development, and affect transcript accumulation of microRNA pathway genes and their targets. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:297-309. [PMID: 34543503 PMCID: PMC8753360 DOI: 10.1111/pbi.13710] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/13/2021] [Accepted: 09/10/2021] [Indexed: 06/13/2023]
Abstract
ERECTA PANICLE 3 (EP3) and ORYZA SATIVA F-BOX KELCH 1 (OsFBK1) proteins share 57% and 54% sequence identity with the Arabidopsis F-box protein HAWAIIAN SKIRT (HWS). Previously we showed that EP3 is a functional orthologue of HWS. Here we demonstrate that OsFBK1 is another functional orthologue of HWS and show the complexity of interaction between EP3 and OsFBK1 genes at different developmental stages of the plant. qRT-PCR expression analyses and studies of EP3-GFP and OsFBK1-RFP promoter reporter lines demonstrate that although EP3 and OsFBK1 expression can be detected in the same tissues some cells exclusively express EP3 or OsFBK1 whilst others co-express both genes. Loss, reduction or gain-of-function lines for EP3 and OsFBK1, show that EP3 and OsFBK1 affect plant architecture, organ size, floral organ number and size, floral morphology, pollen viability, grain size and weight. We have identified the putative orthologue genes of the rice microRNA pathway for ORYZA SATIVA DAWDLE (OsDDL) and ORYZA SATIVA SERRATE (OsSE), and demonstrated that EP3 and OsFBK1 affect their transcript levels as well as those of CROWN ROOT DEFECT 1/ORYZA SATIVA Exportin-5 HASTY (CRD1/OsHST), ORYZA SATIVA DICER-LIKE 1 (OsDCL) and ORYZA SATIVA WEAVY LEAF1 (OsWAF1). We show that EP3 affects OsPri-MIR164, OsNAM1 and OsNAC1 transcript levels. OsNAC1 transcripts are modified by OsFBK1, suggesting two independent regulatory pathways, one via EP3 and OsMIR164 and the other via OsFBK1. Our data propose that EP3 and OsFBK1 conjointly play similar roles in rice to how HWS does in Arabidopsis.
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Affiliation(s)
- Rita S. Borna
- Plant and Crop Sciences DivisionSchool of BiosciencesUniversity of NottinghamNottinghamUK
- Present address:
Department of BotanyUniversity of DhakaDhaka1000Bangladesh
| | - Erik H. Murchie
- Plant and Crop Sciences DivisionSchool of BiosciencesUniversity of NottinghamNottinghamUK
| | - Kevin A. Pyke
- Plant and Crop Sciences DivisionSchool of BiosciencesUniversity of NottinghamNottinghamUK
| | - Jeremy A. Roberts
- Plant and Crop Sciences DivisionSchool of BiosciencesUniversity of NottinghamNottinghamUK
- Present address:
Faculty of Science and EngineeringSchool of Biological & Marine SciencesUniversity of PlymouthDevonUK
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13
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Aslam M, She Z, Jakada BH, Fakher B, Greaves JG, Yan M, Chen Y, Zheng P, Cheng Y, Qin Y. Interspecific complementation-restoration of phenotype in Arabidopsis cuc2cuc3 mutant by sugarcane CUC2 gene. BMC PLANT BIOLOGY 2022; 22:47. [PMID: 35065620 PMCID: PMC8783490 DOI: 10.1186/s12870-022-03440-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND In plants, a critical balance between differentiation and proliferation of stem cells at the shoot apical meristem zone is essential for proper growth. The spatiotemporal regulation of some crucial genes dictates the formation of a boundary within and around budding organs. The boundary plays a pivotal role in distinguishing one tissue type from another and provides a defined shape to the organs at their developed stage. NAM/CUC subfamily of the NAC transcription factors control the boundary formation during meristematic development. RESULTS Here, we have identified the CUP-SHAPED COTYLEDON (CUC) genes in sugarcane and named SsCUC2 (for the orthologous gene of CUC1 and CUC2) and SsCUC3. The phylogenetic reconstruction showed that SsCUCs occupy the CUC2 and CUC3 clade together with monocots, whereas eudicot CUC2 and CUC3 settled separately in the different clade. The structural analysis of CUC genes showed that most of the CUC3 genes were accompanied by an intron gain during eudicot divergence. Besides, the study of SsCUCs expression in the RNA-seq obtained during different stages of ovule development revealed that SsCUCs express in developing young tissues, and the expression of SsCUC2 is regulated by miR164. We also demonstrate that SsCUC2 (a monocot) could complement the cuc2cuc3 mutant phenotype of Arabidopsis (eudicot). CONCLUSIONS This study further supports that CUC2 has diverged in CUC1 and CUC2 during the evolution of monocots and eudicots from ancestral plants. The functional analysis of CUC expression patterns during sugarcane ovule development and ectopic expression of SsCUC2 in Arabidopsis showed that SsCUC2 has a conserved role in boundary formation. Overall, these findings improve our understanding of the functions of sugarcane CUC genes. Our results reveal the crucial functional role of CUC genes in sugarcane.
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Affiliation(s)
- Mohammad Aslam
- Guangxi Key Lab of Sugarcane Biology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, 530004, Nanning, Guangxi, China
| | - Zeyuan She
- Guangxi Key Lab of Sugarcane Biology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, 530004, Nanning, Guangxi, China
| | - Bello Hassan Jakada
- Center for Genomics and Biotechnology, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, 350002, Fuzhou, Fujian, China
| | - Beenish Fakher
- Center for Genomics and Biotechnology, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, 350002, Fuzhou, Fujian, China
| | - Joseph G Greaves
- Center for Genomics and Biotechnology, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, 350002, Fuzhou, Fujian, China
| | - Maokai Yan
- Guangxi Key Lab of Sugarcane Biology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, 530004, Nanning, Guangxi, China
| | - Yingzhi Chen
- Guangxi Key Lab of Sugarcane Biology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, 530004, Nanning, Guangxi, China
| | - Ping Zheng
- Center for Genomics and Biotechnology, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, 350002, Fuzhou, Fujian, China
| | - Yan Cheng
- Center for Genomics and Biotechnology, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, 350002, Fuzhou, Fujian, China
| | - Yuan Qin
- Guangxi Key Lab of Sugarcane Biology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, 530004, Nanning, Guangxi, China.
- Center for Genomics and Biotechnology, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, 350002, Fuzhou, Fujian, China.
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14
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Wang H, Bi Y, Gao Y, Yan Y, Yuan X, Xiong X, Wang J, Liang J, Li D, Song F. A Pathogen-Inducible Rice NAC Transcription Factor ONAC096 Contributes to Immunity Against Magnaprothe oryzae and Xanthomonas oryzae pv. oryzae by Direct Binding to the Promoters of OsRap2.6, OsWRKY62, and OsPAL1. FRONTIERS IN PLANT SCIENCE 2021; 12:802758. [PMID: 34956298 PMCID: PMC8702954 DOI: 10.3389/fpls.2021.802758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 11/15/2021] [Indexed: 06/14/2023]
Abstract
The rice NAC transcriptional factor family harbors 151 members, and some of them play important roles in rice immunity. Here, we report the function and molecular mechanism of a pathogen-inducible NAC transcription factor, ONAC096, in rice immunity against Magnaprothe oryzae and Xanthomonas oryzae pv. oryzae. Expression of ONAC096 was induced by M. oryzae and by abscisic acid and methyl jasmonate. ONAC096 had the DNA binding ability to NAC recognition sequence and was found to be a nucleus-localized transcriptional activator whose activity depended on its C-terminal. CRISPR/Cas9-mediated knockout of ONAC096 attenuated rice immunity against M. oryzae and X. oryzae pv. oryzae as well as suppressed chitin- and flg22-induced reactive oxygen species burst and expression of PTI marker genes OsWRKY45 and OsPAL4; by contrast, overexpression of ONAC096 enhanced rice immunity against these two pathogens and strengthened chitin- or flg22-induced PTI. RNA-seq transcriptomic profiling and qRT-PCR analysis identified a small set of defense and signaling genes that are putatively regulated by ONAC096, and further biochemical analysis validated that ONAC096 could directly bind to the promoters of OsRap2.6, OsWRKY62, and OsPAL1, three known defense and signaling genes that regulate rice immunity. ONAC096 interacts with ONAC066, which is a positive regulator of rice immunity. These results demonstrate that ONAC096 positively contributes to rice immunity against M. oryzae and X. oryzae pv. oryzae through direct binding to the promoters of downstream target genes including OsRap2.6, OsWRKY62, and OsPAL1.
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Affiliation(s)
- Hui Wang
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Yan Bi
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Yizhou Gao
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Yuqing Yan
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Xi Yuan
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, China
| | - Xiaohui Xiong
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Jiajing Wang
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Jiayu Liang
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Dayong Li
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Fengming Song
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
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15
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Zhan J, Chu Y, Wang Y, Diao Y, Zhao Y, Liu L, Wei X, Meng Y, Li F, Ge X. The miR164-GhCUC2-GhBRC1 module regulates plant architecture through abscisic acid in cotton. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:1839-1851. [PMID: 33960609 PMCID: PMC8428825 DOI: 10.1111/pbi.13599] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 03/11/2021] [Accepted: 03/28/2021] [Indexed: 05/06/2023]
Abstract
Branching determines cotton architecture and production, but the underlying regulatory mechanisms remain unclear. Here, we report that the miR164-GhCUC2 (CUP-SHAPED COTYLEDON2) module regulates lateral shoot development in cotton and Arabidopsis. We generated OE-GhCUC2m (overexpression GhCUC2m) and STTM164 (short tandem target mimic RNA of miR164) lines in cotton and heterologous expression lines for gh-miR164, GhCUC2 and GhCUC2m in Arabidopsis to study the mechanisms controlling lateral branching. GhCUC2m overexpression resulted in a short-branch phenotype similar to STTM164. In addition, heterologous expression of GhCUC2m led to decreased number and length of branches compared with wild type, opposite to the effects of the OE-gh-pre164 line in Arabidopsis. GhCUC2 interacted with GhBRC1 and exhibited similar negative regulation of branching. Overexpression of GhBRC1 in the brc1-2 mutant partially rescued the mutant phenotype and decreased branch number. GhBRC1 directly bound to the NCED1 promoter and activated its transcription, leading to local abscisic acid (ABA) accumulation and response. Mutation of the NCED1 promoter disrupted activation by GhBRC1. This finding demonstrates a direct relationship between BRC1 and ABA signalling and places ABA downstream of BRC1 in the control of branching development. The miR164-GhCUC2-GhBRC1-GhNCED1 module provides a clear regulatory axis for ABA signalling to control plant architecture.
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Affiliation(s)
- Jingjing Zhan
- State Key Laboratory of Cotton BiologyInstitute of Cotton Research of Chinese Academy of Agricultural SciencesAnyangChina
| | - Yu Chu
- State Key Laboratory of Cotton BiologyInstitute of Cotton Research of Chinese Academy of Agricultural SciencesAnyangChina
| | - Ye Wang
- State Key Laboratory of Cotton BiologyInstitute of Cotton Research of Chinese Academy of Agricultural SciencesAnyangChina
| | - Yangyang Diao
- State Key Laboratory of Cotton BiologyInstitute of Cotton Research of Chinese Academy of Agricultural SciencesAnyangChina
| | - Yanyan Zhao
- State Key Laboratory of Cotton BiologyInstitute of Cotton Research of Chinese Academy of Agricultural SciencesAnyangChina
| | - Lisen Liu
- State Key Laboratory of Cotton BiologyInstitute of Cotton Research of Chinese Academy of Agricultural SciencesAnyangChina
| | - Xi Wei
- State Key Laboratory of Cotton BiologyInstitute of Cotton Research of Chinese Academy of Agricultural SciencesAnyangChina
| | - Yuan Meng
- State Key Laboratory of Cotton BiologyInstitute of Cotton Research of Chinese Academy of Agricultural SciencesAnyangChina
| | - Fuguang Li
- State Key Laboratory of Cotton BiologyInstitute of Cotton Research of Chinese Academy of Agricultural SciencesAnyangChina
- Zhengzhou Research BaseState Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhouChina
| | - Xiaoyang Ge
- State Key Laboratory of Cotton BiologyInstitute of Cotton Research of Chinese Academy of Agricultural SciencesAnyangChina
- Zhengzhou Research BaseState Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhouChina
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