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Hussain Q, Shi J, Scheben A, Zhan J, Wang X, Liu G, Yan G, King GJ, Edwards D, Wang H. Genetic and signalling pathways of dry fruit size: targets for genome editing-based crop improvement. PLANT BIOTECHNOLOGY JOURNAL 2020; 18:1124-1140. [PMID: 31850661 PMCID: PMC7152616 DOI: 10.1111/pbi.13318] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 11/20/2019] [Accepted: 12/08/2019] [Indexed: 05/24/2023]
Abstract
Fruit is seed-bearing structures specific to angiosperm that form from the gynoecium after flowering. Fruit size is an important fitness character for plant evolution and an agronomical trait for crop domestication/improvement. Despite the functional and economic importance of fruit size, the underlying genes and mechanisms are poorly understood, especially for dry fruit types. Improving our understanding of the genomic basis for fruit size opens the potential to apply gene-editing technology such as CRISPR/Cas to modulate fruit size in a range of species. This review examines the genes involved in the regulation of fruit size and identifies their genetic/signalling pathways, including the phytohormones, transcription and elongation factors, ubiquitin-proteasome and microRNA pathways, G-protein and receptor kinases signalling, arabinogalactan and RNA-binding proteins. Interestingly, different plant taxa have conserved functions for various fruit size regulators, suggesting that common genome edits across species may have similar outcomes. Many fruit size regulators identified to date are pleiotropic and affect other organs such as seeds, flowers and leaves, indicating a coordinated regulation. The relationships between fruit size and fruit number/seed number per fruit/seed size, as well as future research questions, are also discussed.
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Affiliation(s)
- Quaid Hussain
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanChina
| | - Jiaqin Shi
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanChina
| | - Armin Scheben
- School of Biological Sciences and Institute of AgricultureThe University of Western AustraliaPerthWAAustralia
| | - Jiepeng Zhan
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanChina
| | - Xinfa Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanChina
| | - Guihua Liu
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanChina
| | - Guijun Yan
- UWA School of Agriculture and EnvironmentThe UWA Institute of AgricultureThe University of Western AustraliaCrawleyWAAustralia
| | - Graham J. King
- Southern Cross Plant ScienceSouthern Cross UniversityLismoreNSWAustralia
| | - David Edwards
- School of Biological Sciences and Institute of AgricultureThe University of Western AustraliaPerthWAAustralia
| | - Hanzhong Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanChina
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Wang H, Liu C, Ren Y, Wu M, Wu Z, Chen Y, He L, Tang B, Huang X, Shabala S, Yu M, Huang L. An RNA-binding protein MUG13.4 interacts with AtAGO2 to modulate salinity tolerance in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 288:110218. [PMID: 31521214 DOI: 10.1016/j.plantsci.2019.110218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 08/07/2019] [Accepted: 08/12/2019] [Indexed: 06/10/2023]
Abstract
Salt stress is a major constraint to plant growth and development, and plants have developed sophisticated mechanisms to cope with it. AtAGO2, an argonaute protein, is known to play an important role in plant adaptation to salt stress; however, the molecular mechanism of this phenomenon remains essentially unexplored. Here, we performed the yeast two-hybrid assay and found an R3H-domain containing protein, designated as MUG13.4, interacting with AtAGO2. Further bimolecular fluorescence complement (BiFC), glutathione-S-transferase (GST) pull-down, and co-immunoprecipitation (Co-IP) assays confirmed that MUG13.4 interacted with AtAGO2, and MUG13.4 could affect the slicing activity of AtAGO2 associated with miR173. MUG13.4 and AtAGO2 were both predominantly expressed in seeds and roots. Phenotypic analyses of the single and double mutants under salt stress confirmed involvement of MUG13.4-AtAGO2 complex as a component of the salt tolerance mechanism. The mug13.4×ago2-1 double mutant displayed retarded growth and hypersensitivity to salt stress that was more pronounced than in mug13.4 or atago2-1 single mutants. TAS1c-tasiRNA generating system in Nicotiana benthamiana revealed that MUG13.4 could influence the slicing activity of AtAGO2. We also found that MUG13.4 increasingly changed the phenotype of slicer-defected mutants of AtAGO2 in response to salt stress. These findings suggested that the function of AtAGO2 upon salt stress was dependent on MUG13.4. Further investigation suggested that AtAGO2 improved Arabidopsis tolerance to salt stress by affecting operation of the SOS signaling cascade at the transcript level. Taken together, these findings reveal a novel function of MUG13.4 in adjusting Arabidopsis adaptation to salt stress.
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Affiliation(s)
- Huayang Wang
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China
| | - Chen Liu
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China; College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Yincai Ren
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China
| | - Minghua Wu
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China
| | - Zewan Wu
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China
| | - Ying Chen
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China
| | - Lilan He
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China
| | - Bing Tang
- Guizhou Academy of Agricultural Sciences, Guiyang, 550025, China
| | - Xin Huang
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China
| | - Sergey Shabala
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China; School of Land and Food, University of Tasmania, Private Bag 54, Hobart, Tas, 7001, Australia
| | - Min Yu
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China.
| | - Liping Huang
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan, Guangdong, 528000, China; College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.
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Tan HW, Song XM, Duan WK, Wang Y, Hou XL. Genome-wide analysis of the SBP-box gene family in Chinese cabbage (Brassica rapa subsp. pekinensis). Genome 2016; 58:463-77. [PMID: 26599708 DOI: 10.1139/gen-2015-0074] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The SQUAMOSA PROMOTER BINDING PROTEIN (SBP)-box gene family contains highly conserved plant-specific transcription factors that play an important role in plant development, especially in flowering. Chinese cabbage (Brassica rapa subsp. pekinensis) is a leafy vegetable grown worldwide and is used as a model crop for research in genome duplication. The present study aimed to characterize the SBP-box transcription factor genes in Chinese cabbage. Twenty-nine SBP-box genes were identified in the Chinese cabbage genome and classified into six groups. We identified 23 orthologous and 5 co-orthologous SBP-box gene pairs between Chinese cabbage and Arabidopsis. An interaction network among these genes was constructed. Sixteen SBP-box genes were expressed more abundantly in flowers than in other tissues, suggesting their involvement in flowering. We show that the MiR156/157 family members may regulate the coding regions or 3'-UTR regions of Chinese cabbage SBP-box genes. As SBP-box genes were found to potentially participate in some plant development pathways, quantitative real-time PCR analysis was performed and showed that Chinese cabbage SBP-box genes were also sensitive to the exogenous hormones methyl jasmonic acid and salicylic acid. The SBP-box genes have undergone gene duplication and loss, evolving a more refined regulation for diverse stimulation in plant tissues. Our comprehensive genome-wide analysis provides insights into the SBP-box gene family of Chinese cabbage.
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Affiliation(s)
- Hua-Wei Tan
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement; Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture; College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiao-Ming Song
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement; Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture; College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.,b Center of Genomics and Computational Biology, College of Life Sciences, North China University of Science and Technology, Tangshan 063000, China
| | - Wei-Ke Duan
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement; Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture; College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Yan Wang
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement; Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture; College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xi-Lin Hou
- a State Key Laboratory of Crop Genetics and Germplasm Enhancement; Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, Ministry of Agriculture; College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
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