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Nguyen NH, Bui TP, Le NT, Nguyen CX, Le MTT, Dao NT, Phan Q, Van Le T, To HMT, Pham NB, Chu HH, Do PT. Disrupting Sc-uORFs of a transcription factor bZIP1 using CRISPR/Cas9 enhances sugar and amino acid contents in tomato (Solanum lycopersicum). PLANTA 2023; 257:57. [PMID: 36795295 DOI: 10.1007/s00425-023-04089-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
Induced mutations in the SC-uORF of the tomato transcription factor gene SlbZIP1 by the CRISPR/Cas9 system led to the high accumulation of sugar and amino acid contents in tomato fruits. Tomato (Solanum lycopersicum) is one of the most popular and consumed vegetable crops in the world. Among important traits for tomato improvement such as yield, biotic and abiotic resistances, appearance, post-harvest shelf life and fruit quality, the last one seems to face more challenges because of its genetic and biochemical complexities. In this study, a dual-gRNAs CRISPR/Cas9 system was developed to induce targeted mutations in uORF regions of the SlbZIP1, a gene involved in the sucrose-induced repression of translation (SIRT) mechanism. Different induced mutations in the SlbZIP1-uORF region were identified at the T0 generation, stably transferred to the offspring, and no mutation was found at potential off-target sites. The induced mutations in the SlbZIP1-uORF region affected the transcription of SlbZIP1 and related genes in sugar and amino acid biosynthesis. Fruit component analysis showed significant increases in soluble solid, sugar and total amino acid contents in all SlbZIP1-uORF mutant lines. The accumulation of sour-tasting amino acids, including aspartic and glutamic acids, raised from 77 to 144%, while the accumulation of sweet-tasting amino acids such as alanine, glycine, proline, serine, and threonine increased from 14 to 107% in the mutant plants. Importantly, the potential SlbZIP1-uORF mutant lines with desirable fruit traits and no impaired effect on plant phenotype, growth and development were identified under the growth chamber condition. Our result indicates the potential utility of the CRISPR/Cas9 system for fruit quality improvement in tomato and other important crops.
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Affiliation(s)
- Nhung Hong Nguyen
- Laboratory of Plant Cell of Biotechnology, Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Thao Phuong Bui
- Laboratory of Plant Cell of Biotechnology, Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Ngoc Thu Le
- Laboratory of Plant Cell of Biotechnology, Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Cuong Xuan Nguyen
- Division of Plant Sciences, University of Missouri, Columbia, MO, USA
| | - My Tra Thi Le
- Laboratory of Plant Cell of Biotechnology, Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Nhan Trong Dao
- Laboratory of Plant Cell of Biotechnology, Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Quyen Phan
- Laboratory of Plant Cell of Biotechnology, Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Trong Van Le
- National Center for Food Analysis and Assessment, Food Industries Research Institute, Hanoi, Vietnam
| | - Huong Mai Thi To
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Ngoc Bich Pham
- Laboratory of Applied DNA Technology, Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Ha Hoang Chu
- Laboratory of Plant Cell of Biotechnology, Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
| | - Phat Tien Do
- Laboratory of Plant Cell of Biotechnology, Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
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Unpacking B Corps’ Impact on Sustainable Development: An Analysis from Structuration Theory. SUSTAINABILITY 2021. [DOI: 10.3390/su132313408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
With Our Common Future and the United Nation’s global call to implement the Sustainable Development Goals (SDGs) in 2030, public policies increasingly emphasise the need for various actors to contribute to a global transformation and a more sustainable future. Despite growing research on hybrid organisations and their contributions to sustainable development, their impact on accelerating this transition might be faulty. Looking at a type of hybrid organisation, Certified B Corporations (B Corps), this article draws on a multiple case study of nine B Corps in a developing country in Latin America, Colombia. The study builds on the Structuration Theory to examine to what extent and how B Corps impact sustainable development. The article empirically shows that B Corps focus on four categories of sustainable development: considering future generations; enhancing human development; encouraging new mindsets, behaviours, and lifestyles; and promoting socio-political engagement. The findings suggest that B Corps develop communicative and narrative discourses and symbolic schemas as means of signification and follow norms and moral rules to exert legitimation and utilise authoritative resources to exercise power. The article contributes to research on hybrid organisations, sustainability transitions, and business models.
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Durán-Soria S, Pott DM, Osorio S, Vallarino JG. Sugar Signaling During Fruit Ripening. FRONTIERS IN PLANT SCIENCE 2020; 11:564917. [PMID: 32983216 PMCID: PMC7485278 DOI: 10.3389/fpls.2020.564917] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/13/2020] [Indexed: 05/14/2023]
Abstract
Sugars play a key role in fruit quality, as they directly influence taste, and thus consumer acceptance. Carbohydrates are the main resources needed by the plant for carbon and energy supply and have been suggested to be involved in all the important developmental processes, including embryogenesis, seed germination, stress responses, and vegetative and reproductive growth. Recently, considerable progresses have been made in understanding regulation of fruit ripening mechanisms, based on the role of ethylene, auxins, abscisic acid, gibberellins, or jasmonic acid, in both climacteric and non-climacteric fruits. However, the role of sugar and its associated molecular network with hormones in the control of fruit development and ripening is still poorly understood. In this review, we focus on sugar signaling mechanisms described up to date in fruits, describing their involvement in ripening-associated processes, such as pigments accumulation, and their association with hormone transduction pathways, as well as their role in stress-related responses.
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Affiliation(s)
| | | | - Sonia Osorio
- Departamento de Biología Molecular y Bioquímica, Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora”, Universidad de Málaga – Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Málaga, Spain
| | - José G. Vallarino
- Departamento de Biología Molecular y Bioquímica, Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora”, Universidad de Málaga – Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Málaga, Spain
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Baldrich P, Campo S, Wu MT, Liu TT, Hsing YIC, San Segundo B. MicroRNA-mediated regulation of gene expression in the response of rice plants to fungal elicitors. RNA Biol 2016; 12:847-63. [PMID: 26083154 DOI: 10.1080/15476286.2015.1050577] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs that have important regulatory functions in plant growth, development, and response to abiotic stress. Increasing evidence also supports that plant miRNAs contribute to immune responses to pathogens. Here, we used deep sequencing of small RNA libraries for global identification of rice miRNAs that are regulated by fungal elicitors. We also describe 9 previously uncharacterized miRNAs in rice. Combined small RNA and degradome analyses revealed regulatory networks enriched in elicitor-regulated miRNAs supported by the identification of their corresponding target genes. Specifically, we identified an important number of miRNA/target gene pairs involved in small RNA pathways, including miRNA, heterochromatic and trans-acting siRNA pathways. We present evidence for miRNA/target gene pairs implicated in hormone signaling and cross-talk among hormone pathways having great potential in regulating rice immunity. Furthermore, we describe miRNA-mediated regulation of Conserved-Peptide upstream Open Reading Frame (CPuORF)-containing genes in rice, which suggests the existence of a novel regulatory network that integrates miRNA and CPuORF functions in plants. The knowledge gained in this study will help in understanding the underlying regulatory mechanisms of miRNAs in rice immunity and develop appropriate strategies for rice protection.
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Affiliation(s)
- Patricia Baldrich
- a Centre for Research in Agricultural Genomics (CRAG) ; Edifici CRAG ; Barcelona , Spain
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