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Guo R, Zhang X, Li M, Zhang H, Wu J, Zhang L, Xiao X, Han M, An N, Xing L, Zhang C. MdNup62 involved in salt and osmotic stress tolerance in apple. Sci Rep 2023; 13:20198. [PMID: 37980385 PMCID: PMC10657396 DOI: 10.1038/s41598-023-47024-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 11/08/2023] [Indexed: 11/20/2023] Open
Abstract
Abiotic stress of plants has serious consequences on the development of the apple industry. Nuclear pore complexes (NPCs) control nucleoplasmic transport and play an important role in the regulation of plant abiotic stress response. However, the effects of NPCs on apple salt and osmotic stress responses have not been reported yet. In this study, we analyzed the expression and function of NUCLEOPORIN 62 (MdNup62), a component of apple NPC. MdNup62 expression was significantly increased by salt and mannitol (simulated osmotic stress) treatment. The MdNup62-overexpressing (OE) Arabidopsis and tomato lines exhibited significantly reduced salt stress tolerance, and MdNup62-OE Arabidopsis lines exhibited reduced osmotic stress tolerance. We further studied the function of HEAT SHOCK FACTOR A1d (MdHSFA1d), the interacting protein of MdNup62, in salt and osmotic stress tolerance. In contrast to MdNup62, MdHSFA1d-OE Arabidopsis lines showed significantly enhanced tolerance to salt and osmotic stress. Our findings suggest a possible interaction of MdNup62 with MdHSFA1d in the mediation of nuclear and cytoplasmic transport and the regulation of apple salt and osmotic stress tolerance. These results contribute to the understanding of the salt and osmotic stress response mechanism in apple.
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Affiliation(s)
- Ruxuan Guo
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, Hebei Higher Institute Application Technology Research and Development Center of Horticultural Plant Biological Breeding, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, 066600, Hebei, People's Republic of China
| | - Xiaoshuang Zhang
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, Hebei Higher Institute Application Technology Research and Development Center of Horticultural Plant Biological Breeding, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, 066600, Hebei, People's Republic of China
| | - Mingyuan Li
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, Hebei Higher Institute Application Technology Research and Development Center of Horticultural Plant Biological Breeding, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, 066600, Hebei, People's Republic of China
| | - Huiwen Zhang
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, Hebei Higher Institute Application Technology Research and Development Center of Horticultural Plant Biological Breeding, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, 066600, Hebei, People's Republic of China
| | - Junkai Wu
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, Hebei Higher Institute Application Technology Research and Development Center of Horticultural Plant Biological Breeding, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, 066600, Hebei, People's Republic of China
| | - Libin Zhang
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, Hebei Higher Institute Application Technology Research and Development Center of Horticultural Plant Biological Breeding, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, 066600, Hebei, People's Republic of China
| | - Xiao Xiao
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, Hebei Higher Institute Application Technology Research and Development Center of Horticultural Plant Biological Breeding, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, 066600, Hebei, People's Republic of China
| | - Mingyu Han
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - Na An
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - Libo Xing
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China.
| | - Chenguang Zhang
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, Hebei Higher Institute Application Technology Research and Development Center of Horticultural Plant Biological Breeding, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, 066600, Hebei, People's Republic of China.
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2
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Chen G, Xu D, Liu Q, Yue Z, Dai B, Pan S, Chen Y, Feng X, Hu H. Regulation of FLC nuclear import by coordinated action of the NUP62-subcomplex and importin β SAD2. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:2086-2106. [PMID: 37278318 DOI: 10.1111/jipb.13540] [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: 05/27/2023] [Accepted: 06/05/2023] [Indexed: 06/07/2023]
Abstract
Flowering locus C (FLC) is a central transcriptional repressor that controls flowering time. However, how FLC is imported into the nucleus is unknown. Here, we report that Arabidopsis nucleoporins 62 (NUP62), NUP58, and NUP54 composed NUP62-subcomplex modulates FLC nuclear import during floral transition in an importin α-independent manner, via direct interaction. NUP62 recruits FLC to the cytoplasmic filaments and imports it into the nucleus through the NUP62-subcomplex composed central channel. Importin β supersensitive to ABA and drought 2 (SAD2), a carrier protein, is critical for FLC nuclear import and flower transition, which facilitates FLC import into the nucleus mainly through the NUP62-subcomplex. Proteomics, RNA-seq, and cell biological analyses indicate that the NUP62-subcomplex mainly mediates the nuclear import of cargos with unconventional nuclear localization sequences (NLSs), such as FLC. Our findings illustrate the mechanisms of the NUP62-subcomplex and SAD2 on FLC nuclear import process and floral transition, and provide insights into the role of NUP62-subcomplex and SAD2 in protein nucleocytoplasmic transport in plants.
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Affiliation(s)
- Gang Chen
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Danyun Xu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qing Liu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhichuang Yue
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Biao Dai
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Shujuan Pan
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yongqiang Chen
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xinhua Feng
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Honghong Hu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
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3
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CPR5-mediated nucleo-cytoplasmic localization of IAA12 and IAA19 controls lateral root development during abiotic stress. Proc Natl Acad Sci U S A 2023; 120:e2209781120. [PMID: 36623191 PMCID: PMC9934060 DOI: 10.1073/pnas.2209781120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Plasticity of the root system architecture (RSA) is essential in enabling plants to cope with various environmental stresses and is mainly controlled by the phytohormone auxin. Lateral root development is a major determinant of RSA. Abiotic stresses reduce auxin signaling output, inhibiting lateral root development; however, how abiotic stress translates into a lower auxin signaling output is not fully understood. Here, we show that the nucleo-cytoplasmic distribution of the negative regulators of auxin signaling AUXIN/INDOLE-3-ACETIC ACID INDUCIBLE 12 (AUX/IAA12 or IAA12) and IAA19 determines lateral root development under various abiotic stress conditions. The cytoplasmic localization of IAA12 and IAA19 in the root elongation zone enforces auxin signaling output, allowing lateral root development. Among components of the nuclear pore complex, we show that CONSTITUTIVE EXPRESSOR OF PATHOGENESIS-RELATED GENES 5 (CPR5) selectively mediates the cytoplasmic translocation of IAA12/19. Under abiotic stress conditions, CPR5 expression is strongly decreased, resulting in the accumulation of nucleus-localized IAA12/19 in the root elongation zone and the suppression of lateral root development, which is reiterated in the cpr5 mutant. This study reveals a regulatory mechanism for auxin signaling whereby the spatial distribution of AUX/IAA regulators is critical for lateral root development, especially in fluctuating environmental conditions.
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Song M, Linghu B, Huang S, Hu S, An R, Wei S, Mu J, Zhang Y. Identification of nuclear pore complexes (NPCs) and revealed outer-ring component BnHOS1 related to cold tolerance in B. napus. Int J Biol Macromol 2022; 223:1450-1461. [PMID: 36402381 DOI: 10.1016/j.ijbiomac.2022.11.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022]
Abstract
Nuclear pore complexes (NPCs) consist of ~30 different nucleoporins (Nups), are the unique channels that govern development, hormonal response, and roles in both biotic and abiotic responses, as well as the transport and information exchange of biomacromolecules between nucleoplasms. Here, we report the comprehensive identification of 77 BnNups throughout the zhongshuang11 (ZS11) genome, which were classified into 29 distinct categories based on their evolutionary connections. We compared and contrasted different BnNups by analyzing at their gene structures, protein domains, putative three-dimensional (3D) models and expression patterns. Additional examples of genome-wide duplication events and cross-species synteny are provided to demonstrate the proliferation and evolutionary conservation of BnNups. When BnHOS1 was modified using CRISPR/Cas9 technology, the resulting L10 and L28 lines exhibited substantial freezing resistance. This not only demonstrated the negative regulatory impact of BnHOS1 on cold stress, but also offered a promising candidate gene for cold tolerance breeding and augmented the available B. napus material. These findings not only help us learn more about the composition and function of BnNPCs in B. napus, but they also provide light on how NPCs in other eukaryotic organism functions.
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Affiliation(s)
- Min Song
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling 712100, Shaanxi, China; State Key Laboratory of Crop Stress Biology in Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Bin Linghu
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Shuhua Huang
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling 712100, Shaanxi, China
| | - Shengwu Hu
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Ran An
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling 712100, Shaanxi, China
| | - Shihao Wei
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling 712100, Shaanxi, China
| | - Jianxin Mu
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling 712100, Shaanxi, China.
| | - Yanfeng Zhang
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling 712100, Shaanxi, China.
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Zhang C, Zhang XI, Cheng B, Wu J, Zhang L, Xiao X, Zhang D, Zhao C, An N, Han M, Xing L. MdNup54 Interactions With MdHSP70 Involved in Flowering in Apple. FRONTIERS IN PLANT SCIENCE 2022; 13:903808. [PMID: 35865288 PMCID: PMC9296068 DOI: 10.3389/fpls.2022.903808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
Flowering-related problems in "Fuji" apple have severely restricted the development of China's apple industry. Nuclear pore complexes (NPCs) control nucleoplasmic transport and play an important role in the regulation of plant growth and development. However, the effects of NPCs on apple flowering have not been reported. Here, we analysed the expression and function of MdNup54, a component of apple NPC. MdNup54 expression was the highest in flower buds and maintained during 30-70 days after flowering. MdNup54-overexpressing (OE) Arabidopsis lines displayed significantly earlier flowering than that of the wild type. We further confirmed that MdNup54 interacts with MdHSP70, MdMYB11, and MdKNAT4/6. Consistent with these observations, flowering time of MdHSP70-OE Arabidopsis lines was also significantly earlier. Therefore, our findings suggest a possible interaction of MdNup54 with MdHSP70 to mediate its nuclear and cytoplasmic transport and to regulate apple flowering. The results enhance the understanding of the flowering mechanism in apple and propose a novel strategy to study nucleoporins.
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Affiliation(s)
- Chenguang Zhang
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, China
| | - XIaoshuang Zhang
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, China
| | - Bo Cheng
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Junkai Wu
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, China
| | - Libin Zhang
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, China
| | - Xiao Xiao
- Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization, College of Horticulture Technology, Hebei Normal University of Science and Technology, Changli, China
| | - Dong Zhang
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Caiping Zhao
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Na An
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Mingyu Han
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Libo Xing
- College of Horticulture, Northwest A&F University, Yangling, China
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Zhang C, An N, Jia P, Zhang W, Liang J, Zhou H, Zhang D, Ma J, Zhao C, Han M, Ren X, Xing L. MdNup62 interactions with MdHSFs involved in flowering and heat-stress tolerance in apple. BMC PLANT BIOLOGY 2022; 22:317. [PMID: 35786201 PMCID: PMC9251929 DOI: 10.1186/s12870-022-03698-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
Because of global warming, the apple flowering period is occurring significantly earlier, increasing the probability and degree of freezing injury. Moreover, extreme hot weather has also seriously affected the development of apple industry. Nuclear pore complexes (NPCs) are main channels controlling nucleocytoplasmic transport, but their roles in regulating plant development and stress responses are still unknown. Here, we analysed the components of the apple NPC and found that MdNup62 interacts with MdNup54, forming the central NPC channel. MdNup62 was localized to the nuclear pore, and its expression was significantly up-regulated in 'Nagafu No. 2' tissue-cultured seedlings subjected to heat treatments. To determine MdNup62's function, we obtained MdNup62-overexpressed (OE) Arabidopsis and tomato lines that showed significantly reduced high-temperature resistance. Additionally, OE-MdNup62 Arabidopsis lines showed significantly earlier flowering compared with wild-type. Furthermore, we identified 62 putative MdNup62-interacting proteins and confirmed MdNup62 interactions with multiple MdHSFs. The OE-MdHSFA1d and OE-MdHSFA9b Arabidopsis lines also showed significantly earlier flowering phenotypes than wild-type, but had enhanced high-temperature resistance levels. Thus, MdNUP62 interacts with multiple MdHSFs during nucleocytoplasmic transport to regulate flowering and heat resistance in apple. The data provide a new theoretical reference for managing the impact of global warming on the apple industry.
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Affiliation(s)
- Chenguang Zhang
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Na An
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Peng Jia
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Wei Zhang
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Jiayan Liang
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Hua Zhou
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Dong Zhang
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Juanjuan Ma
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Caiping Zhao
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Mingyu Han
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Xiaolin Ren
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Libo Xing
- College of Horticulture, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China.
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Wu X, Han J, Guo C. Function of Nuclear Pore Complexes in Regulation of Plant Defense Signaling. Int J Mol Sci 2022; 23:ijms23063031. [PMID: 35328452 PMCID: PMC8953349 DOI: 10.3390/ijms23063031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/06/2022] [Accepted: 03/09/2022] [Indexed: 02/01/2023] Open
Abstract
In eukaryotes, the nucleus is the regulatory center of cytogenetics and metabolism, and it is critical for fundamental biological processes, including DNA replication and transcription, protein synthesis, and biological macromolecule transportation. The eukaryotic nucleus is surrounded by a lipid bilayer called the nuclear envelope (NE), which creates a microenvironment for sophisticated cellular processes. The NE is perforated by the nuclear pore complex (NPC), which is the channel for biological macromolecule bi-directional transport between the nucleus and cytoplasm. It is well known that NPC is the spatial designer of the genome and the manager of genomic function. Moreover, the NPC is considered to be a platform for the continual adaptation and evolution of eukaryotes. So far, a number of nucleoporins required for plant-defense processes have been identified. Here, we first provide an overview of NPC organization in plants, and then discuss recent findings in the plant NPC to elaborate on and dissect the distinct defensive functions of different NPC subcomponents in plant immune defense, growth and development, hormone signaling, and temperature response. Nucleoporins located in different components of NPC have their unique functions, and the link between the NPC and nucleocytoplasmic trafficking promotes crosstalk of different defense signals in plants. It is necessary to explore appropriate components of the NPC as potential targets for the breeding of high-quality and broad spectrum resistance crop varieties.
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Affiliation(s)
- Xi Wu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China;
| | - Junyou Han
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China;
- Correspondence: (J.H.); (C.G.)
| | - Changkui Guo
- Laboratory of Plant Molecular and Developmental Biology, Zhejiang A & F University, Hangzhou 311300, China
- Correspondence: (J.H.); (C.G.)
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Liu L, Chai M, Huang Y, Qi J, Zhu W, Xi X, Chen F, Qin Y, Cai H. SDG2 regulates Arabidopsis inflorescence architecture through SWR1-ERECTA signaling pathway. iScience 2021; 24:103236. [PMID: 34746701 PMCID: PMC8551540 DOI: 10.1016/j.isci.2021.103236] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 08/30/2021] [Accepted: 10/04/2021] [Indexed: 12/21/2022] Open
Abstract
Inflorescence architecture is diverse in flowering plants, and two determinants of inflorescence architecture are the inflorescence meristem and pedicel length. Although the ERECTA (ER) signaling pathway, in coordination with the SWR1 chromatin remodeling complex, regulates inflorescence architecture with subsequent effects on pedicel elongation, the mechanism underlying SWR1-ER signaling pathway regulation of inflorescence architecture remains unclear. This study determined that SDG2 genetically interacts with the SWR1-ER signaling pathways in regulating inflorescence architecture. Transcriptome results showed that auxin might potentially influence inflorescence growth mediated by SDG2 and SWR1-ER pathways. SWR1 and ER signaling are required to enrich H2A.Z histone variant and SDG2 regulated SDG2-mediated H3K4me3 histone modification at auxin-related genes and H2A.Z histone variant enrichment. Our study shows how the regulation of inflorescence architecture is mediated by SDG2 and SWR1-ER, which affects auxin hormone signaling pathways.
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Affiliation(s)
- Liping Liu
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mengnan Chai
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Youmei Huang
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jingang Qi
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wenhui Zhu
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xinpeng Xi
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Fangqian Chen
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuan Qin
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Lab of Sugarcane Biology, College of Agriculture, Guangxi University, Nanning 530004, China
| | - Hanyang Cai
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Hou L, Chen W, Zhang Z, Pang X, Li Y. Genome-wide association studies of fruit quality traits in jujube germplasm collections using genotyping-by-sequencing. THE PLANT GENOME 2020; 13:e20036. [PMID: 33217218 DOI: 10.1002/tpg2.20036] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 05/06/2020] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
Chinese jujube (Ziziphus jujuba Mill.) is an important fruit crop and harbors many highly diverse traits of potential economic importance. Fruit size, stone size, and fruit cracking have an important influence on the commercial value of jujube. This study is the first to conduct a genome-wide association study (GWAS) on 180 accessions of jujube and focuses on locating single-nucleotide polymorphisms (SNPs) associated with nine important fruit quality traits. Genotyping was performed using genotyping-by-sequencing and 4651 high-quality SNPs were identified. A genetic diversity analysis revealed the presence of three distinct groups, and rapid linkage disequilibrium decay was observed in this jujube population. Using a mixed linear model, a total of 45 significant SNP-trait associations were detected, among which 33 SNPs had associations with fruit size-related traits, nine were associated with stone size-related traits, and three with fruit cracking-related traits. In total, 21 candidate genes involved in cell expansion, abiotic stress responses, hormone signaling, and growth development were identified from the genome sequences of jujube. These results are useful as basic data for GWAS of other jujube traits, and these significant SNP loci and candidate genes should aid marker-assisted breeding and genomic selection of improved jujube cultivars.
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Affiliation(s)
- Lu Hou
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Wu Chen
- The Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Zhiyong Zhang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and 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, School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China
| | - Xiaoming Pang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Yingyue Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
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10
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Zhang C, An N, Jia P, Zhang W, Liang J, Zhang X, Zhou H, Ma W, Han M, Xing L, Ren X. Genomic identification and expression analysis of nuclear pore proteins in Malus domestica. Sci Rep 2020; 10:17426. [PMID: 33060661 PMCID: PMC7566457 DOI: 10.1038/s41598-020-74171-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/15/2020] [Indexed: 11/09/2022] Open
Abstract
The nuclear pore complex (NPC), comprised of individual nucleoporin (Nup) proteins, controls nucleo-cytoplasmic transport of RNA and protein, and is important for regulating plant growth and development. However, there are no reports on this complex in fruit tree species. In this study, we identified 38 apple Nups and named them based on the known Arabidopsis thaliana homologs. We also completed bioinformatics analyses of the intron and exon structural data for apple Nups. The proteins encoded by the apple Nups lacked a universally conserved domain. Moreover, a phylogenetic analysis separated the apple and A. thaliana Nups into three groups. The phylogenetic tree indicated that MdNup54 and MdNup62 are most closely related to genes in other Rosaceae species. To characterize the 38 candidate Malus domestica Nups, we measured their stage-specific expression levels. Our tests revealed these proteins were differentially expressed among diverse tissues. We analyzed the expression levels of seven apple Nups in response to an indole-3-acetic acid (IAA) treatment. The phytohormone treatment significantly inhibited apple flowering. A qRT-PCR analysis proved that an IAA treatment significantly inhibited the expression of these seven genes. A preliminary study regarding two members of the Nup62 subcomplex, MdNup54 and MdNup62, confirmed these two proteins can interact with each other. A yeast two-hybrid assay verified that MdNup54 can interact with MdKNAT4 and MdKNAT6. On the basis of the study results, we identified apple NPC and predicted its structure and function. The data generated in this investigation provide important reference material for follow-up research.
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Affiliation(s)
- Chenguang Zhang
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Na An
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Peng Jia
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Wei Zhang
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Jiayan Liang
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Xu Zhang
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Hua Zhou
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Wenchun Ma
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Mingyu Han
- College of Horticulture, Northwest A&F University, Yangling, China.
| | - Libo Xing
- College of Horticulture, Northwest A&F University, Yangling, China.
| | - Xiaolin Ren
- College of Horticulture, Northwest A&F University, Yangling, China.
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11
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Cheng Z, Zhang X, Huang P, Huang G, Zhu J, Chen F, Miao Y, Liu L, Fu YF, Wang X. Nup96 and HOS1 Are Mutually Stabilized and Gate CONSTANS Protein Level, Conferring Long-Day Photoperiodic Flowering Regulation in Arabidopsis. THE PLANT CELL 2020; 32:374-391. [PMID: 31826964 PMCID: PMC7008479 DOI: 10.1105/tpc.19.00661] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/17/2019] [Accepted: 12/10/2019] [Indexed: 05/20/2023]
Abstract
The nuclear pore complex profoundly affects the timing of flowering; however, the underlying mechanisms are poorly understood. Here, we report that Nucleoporin96 (Nup96) acts as a negative regulator of long-day photoperiodic flowering in Arabidopsis (Arabidopsis thaliana). Through multiple approaches, we identified the E3 ubiquitin ligase HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENE1 (HOS1) and demonstrated its interaction in vivo with Nup96. Nup96 and HOS1 mainly localize and interact on the nuclear membrane. Loss of function of Nup96 leads to destruction of HOS1 proteins without a change in their mRNA abundance, which results in overaccumulation of the key activator of long-day photoperiodic flowering, CONSTANS (CO) proteins, as previously reported in hos1 mutants. Unexpectedly, mutation of HOS1 strikingly diminishes Nup96 protein level, suggesting that Nup96 and HOS1 are mutually stabilized and thus form a novel repressive module that regulates CO protein turnover. Therefore, the nup96 and hos1 single and nup96 hos1 double mutants have highly similar early-flowering phenotypes and overlapping transcriptome changes. Together, this study reveals a repression mechanism in which the Nup96-HOS1 repressive module gates the level of CO proteins and thereby prevents precocious flowering in long-day conditions.
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Affiliation(s)
- Zhiyuan Cheng
- Ministry of Agriculture Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaomei Zhang
- Ministry of Agriculture Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Penghui Huang
- Ministry of Agriculture Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guowen Huang
- Ministry of Agriculture Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Department of Chemical Sciences and Biological Engineering, Hunan University of Science and Technology, Yongzhou 425100, Hunan, China
| | - Jinglong Zhu
- Ministry of Agriculture Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Fulu Chen
- Ministry of Agriculture Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yuchen Miao
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Liangyu Liu
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Yong-Fu Fu
- Ministry of Agriculture Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xu Wang
- Ministry of Agriculture Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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12
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Peng W, Ming QL, Zhai X, Zhang Q, Rahman K, Wu SJ, Qin LP, Han T. Polysaccharide Fraction Extracted from Endophytic Fungus Trichoderma atroviride D16 Has an Influence on the Proteomics Profile of the Salvia miltiorrhiza Hairy Roots. Biomolecules 2019; 9:E415. [PMID: 31455038 PMCID: PMC6769542 DOI: 10.3390/biom9090415] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/15/2019] [Accepted: 08/20/2019] [Indexed: 01/30/2023] Open
Abstract
Trichoderma atroviride develops a symbiont relationship with Salvia miltiorrhiza and this association involves a number of signaling pathways and proteomic responses between both partners. In our previous study, we have reported that polysaccharide fraction (PSF) of T. atroviride could promote tanshinones accumulation in S.miltiorrhiza hairy roots. Consequently, the present data elucidates the broad proteomics changes under treatment of PSF. Furthermore, we reported several previously undescribed and unexpected responses, containing gene expression patterns consistent with biochemical stresses and metabolic patterns inside the host. In summary, the PSF-induced tanshinones accumulation in S.miltiorrhiza hairy roots may be closely related to Ca2+ triggering, peroxide reaction, protein phosphorylation, and jasmonic acid (JA) signal transduction, leading to an increase in leucine-rich repeat (LRR) protein synthesis. This results in the changes in basic metabolic flux of sugars, amino acids, and protein synthesis, along with signal defense reactions. The results reported here increase our understanding of the interaction between T.atroviride and S.miltiorrhiza and specifically confirm the proteomic responses underlying the activities of PSF.
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Affiliation(s)
- Wei Peng
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, No.1166 Liutai Avenue, Chengdu 611137, China
| | - Qian-Liang Ming
- Department of Pharmacognosy, School of Pharmacy, Army Medical University, 30 Gaotanyan Street, Chongqing 400038, China
| | - Xin Zhai
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Qing Zhang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, No.1166 Liutai Avenue, Chengdu 611137, China
| | - Khalid Rahman
- Faculty of Science, School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK
| | - Si-Jia Wu
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Lu-Ping Qin
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Ting Han
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China.
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13
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Bao S, Shen G, Li G, Liu Z, Arif M, Wei Q, Men S. The Arabidopsis nucleoporin NUP1 is essential for megasporogenesis and early stages of pollen development. PLANT CELL REPORTS 2019; 38:59-74. [PMID: 30341574 DOI: 10.1007/s00299-018-2349-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 09/25/2018] [Accepted: 10/07/2018] [Indexed: 05/28/2023]
Abstract
Loss-of-function of nucleoporin NUP1 in Arabidopsis causes defect in both male and female gametogenesis. Its ovules are arrested during meiosis, and its pollen grains are aborted at mitosis I. Nuclear pore complex (NPC) plays crucial roles in nucleocytoplasmic trafficking of proteins and RNAs. The NPC contains approximately 30 different proteins termed nucleoporins (NUPs). So far, only a few of plant NUPs have been characterized. The Arabidopsis NUP1 was identified as an ortholog of the yeast NUP1 and animal NUP153. Loss-of-function of NUP1 in Arabidopsis caused fertility defect; however, the molecular mechanism of this defect remains unknown. Here, we found that both male and female gametogenesis of the nup1 mutants were defective. nup1 ovules were arrested from the meiosis stage onward; only approximately 6.7% and 3% ovules of the nup1-1 and nup1-4 mutants developed up to the FG7 stage, respectively. Pollen development of the nup1 mutants was arrested during the first mitotic division. In addition, enlarged pollen grains with increased DNA content were observed in the nup1 mutant. RNA-sequencing showed that expression levels of genes involved in pollen development or regulation of cell size were reduced dramatically in nup1 compared with wild type. These results suggest that NUP1 plays an important role in gametogenesis.
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Affiliation(s)
- Shuguang Bao
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University and Tianjin Key Laboratory of Protein Science, Tianjin, 300071, China
| | - Guangshuang Shen
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University and Tianjin Key Laboratory of Protein Science, Tianjin, 300071, China
| | - Guichen Li
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University and Tianjin Key Laboratory of Protein Science, Tianjin, 300071, China
| | - Zhikang Liu
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University and Tianjin Key Laboratory of Protein Science, Tianjin, 300071, China
| | - Muhammad Arif
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University and Tianjin Key Laboratory of Protein Science, Tianjin, 300071, China
| | - Qingqing Wei
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University and Tianjin Key Laboratory of Protein Science, Tianjin, 300071, China
| | - Shuzhen Men
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University and Tianjin Key Laboratory of Protein Science, Tianjin, 300071, China.
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14
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Gu Y. The nuclear pore complex: a strategic platform for regulating cell signaling. THE NEW PHYTOLOGIST 2018; 219:25-30. [PMID: 28858378 DOI: 10.1111/nph.14756] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 07/13/2017] [Indexed: 05/22/2023]
Abstract
Contents Summary 25 I Introduction 25 II. Structural organization of the NPC 26 III. The role of NPCs in immune signaling 26 IV. The role of NPCs in hormone signaling 28 V. Conclusions 29 Acknowledgements 29 References 29 SUMMARY: Nuclear pore complexes (NPCs) are fundamental components of the eukaryotic cell. They perforate the nuclear envelope and serve as highly selective transport gates that enable bi-directional macromolecule exchange between the nucleus and cytoplasm. Recent studies illustrate that the NPC is not a static structural channel but a flexible environment and strategic player during nuclear signaling. The constitutional and conformational dynamics of the NPC allow it to tailor nucleocytoplasmic transport activities and define specific signaling output in response to various cellular and environmental cues. In this Insight, we review the roles of NPC constituents in immune activation and hormone signaling in plants, and discuss the possible role of the NPC as a legitimate platform for regulating cell signaling.
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Affiliation(s)
- Yangnan Gu
- Tsinghua University-Peking University Joint Center for Life Sciences, Beijing, 100084, China
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
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15
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Tang M, Ning Y, Shu X, Dong B, Zhang H, Wu D, Wang H, Wang GL, Zhou B. The Nup98 Homolog APIP12 Targeted by the Effector AvrPiz-t is Involved in Rice Basal Resistance Against Magnaporthe oryzae. RICE (NEW YORK, N.Y.) 2017; 10:5. [PMID: 28205154 PMCID: PMC5311014 DOI: 10.1186/s12284-017-0144-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 02/10/2017] [Indexed: 05/20/2023]
Abstract
BACKGROUND The effector AvrPiz-t of Magnaporthe oryzae has virulence function in rice. However, the mechanism underlying its virulence in host is not fully understood. RESULTS In this study, we analyzed the function of AvrPiz-t interacting protein 12 (APIP12) in rice immunity. APIP12 significantly bound to AvrPiz-t and APIP6 in its middle portion and N-terminus, respectively, in yeast two-hybrid assay. Glutathione S-transferase (GST) pull-down assay further verified the interactions of APIP12 with AvrPiz-t and APIP6. APIP12 encodes a homologue of nucleoporin protein Nup98 without the conserved domain of Phe-Gly repeats and has no orthologue in other plants. Both knockout and knockdown of APIP12 caused enhanced susceptibility of rice plants to virulent isolates of M. oryzae. The expression of some pathogenesis-related (PR) genes was reduced in both knockout and knockdown mutants, suggesting that APIP12 is required for the accumulation of transcripts of PR genes upon the infection. It is worth noting that neither knockout/knockdown nor overexpression of APIP12 attenuates Piz-t resistance. CONCLUSIONS Taken together, our results demonstrate that APIP12 is a virulence target of AvrPiz-t and is involved in the basal resistance against M. oryzae in rice.
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Affiliation(s)
- Mingzhi Tang
- Institute of Nuclear-Agricultural Sciences, Zhejiang University, Hangzhou, China
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yuese Ning
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaoli Shu
- Institute of Nuclear-Agricultural Sciences, Zhejiang University, Hangzhou, China
| | - Bo Dong
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Hongyan Zhang
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Dianxing Wu
- Institute of Nuclear-Agricultural Sciences, Zhejiang University, Hangzhou, China
| | - Hua Wang
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Guo-Liang Wang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- Department of Plant Pathology, the Ohio State University, Columbus, 43210, USA
| | - Bo Zhou
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China.
- The Division of Genetics and Biotechnology, International Rice Research Institute, Los Baños, 4031, Philippines.
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16
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Abstract
The eukaryotic nucleus is enclosed by the nuclear envelope, which is perforated by the nuclear pores, the gateways of macromolecular exchange between the nucleoplasm and cytoplasm. The nucleoplasm is organized in a complex three-dimensional fashion that changes over time and in response to stimuli. Within the cell, the nucleus must be viewed as an organelle (albeit a gigantic one) that is a recipient of cytoplasmic forces and capable of morphological and positional dynamics. The most dramatic reorganization of this organelle occurs during mitosis and meiosis. Although many of these aspects are less well understood for the nuclei of plants than for those of animals or fungi, several recent discoveries have begun to place our understanding of plant nuclei firmly into this broader cell-biological context.
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Affiliation(s)
- Iris Meier
- Department of Molecular Genetics, The Ohio State University, Columbus, Ohio 43210;
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford OX3 0BP, United Kingdom;
| | | | - David E Evans
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford OX3 0BP, United Kingdom;
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17
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Tamura K, Fukao Y, Hatsugai N, Katagiri F, Hara-Nishimura I. Nup82 functions redundantly with Nup136 in a salicylic acid-dependent defense response of Arabidopsis thaliana. Nucleus 2017; 8:301-311. [PMID: 28071978 DOI: 10.1080/19491034.2017.1279774] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
The nuclear pore complex (NPC) comprises more than 30 nucleoporins (Nups). NPC mediates macromolecular trafficking between the nucleoplasm and the cytoplasm, but specific roles of individual Nups are poorly understood in higher plants. Here, we show that the novel nucleoporin unique to angiosperm plants (designated as Nup82) functions in a salicylic acid-dependent defense in a redundant manner with Nup136, which is a component of the nuclear basket in the NPC. Arabidopsis thaliana Nup82 had a similar amino acid sequence to the N-terminal half of Nup136 and a Nup82-GFP fusion was localized on the nuclear envelope. Immunoprecipitation and bimolecular fluorescence complementation analyses revealed that Nup82 interacts with the NPC components Nup136 and RAE1. The double knockout mutant nup82 nup136 showed severe growth defects, while the single knockout mutant nup82 did not, suggesting that Nup82 functions redundantly with Nup136. nup82 nup136 impaired benzothiadiazole (an analog of salicylic acid)-induced resistance to the virulent bacteria Pseudomonas syringae pv. tomato DC3000. Furthermore, transcriptome analysis of nup82 nup136 indicates that deficiency of Nup82 and Nup136 causes noticeable downregulation of immune-related genes. These results suggest that Nup82 and Nup136 are redundantly involved in transcriptional regulation of salicylic acid-responsive genes through nuclear transport of signaling molecules.
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Affiliation(s)
- Kentaro Tamura
- a Department of Botany , Graduate School of Science, Kyoto University , Kyoto , Japan
| | - Yoichiro Fukao
- b Department of Bioinformatics , College of Life Sciences, Ritsumeikan University , Shiga , Japan
| | - Noriyuki Hatsugai
- c Department of Plant Biology , Microbial and Plant Genomics Institute, University of Minnesota , St. Paul , MN , USA
| | - Fumiaki Katagiri
- c Department of Plant Biology , Microbial and Plant Genomics Institute, University of Minnesota , St. Paul , MN , USA
| | - Ikuko Hara-Nishimura
- a Department of Botany , Graduate School of Science, Kyoto University , Kyoto , Japan
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