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Liu S, Zhang Y, Pan X, Li B, Yang Q, Yang C, Zhang J, Wu F, Yang A, Li Y. PIF1, a phytochrome-interacting factor negatively regulates drought tolerance and carotenoids biosynthesis in tobacco. Int J Biol Macromol 2023; 247:125693. [PMID: 37419268 DOI: 10.1016/j.ijbiomac.2023.125693] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 06/30/2023] [Accepted: 07/02/2023] [Indexed: 07/09/2023]
Abstract
The phytochrome-interacting factors (PIFs) function crucially in multiple physiological processes, but the biological functions of some PIFs remain elusive in some species. Here, a PIF transcription factor NtPIF1 was cloned and characterized in tobacco (Nicotiana tabacum L.). The transcript of NtPIF1 was significantly induced by drought stress treatments, and it localized in the nuclear. Knockout of NtPIF1 by CRISPR/Cas9 system led to the improved drought tolerance of tobacco with increased osmotic adjustment, antioxidant activity, photosynthetic efficiency and decreased water loss rate. On the contrary, NtPIF1-overexpression plants displays drought-sensitive phenotypes. In addition, NtPIF1 reduced the biosynthesis of abscisic acid (ABA) and its upstream carotenoids by regulating the expression of genes involved in ABA and carotenoids biosynthetic pathway upon drought stress. Electrophoretic mobility shift and dual-luciferase assays illustrated that, NtPIF1 directly bind to the E-box elements within the promoters of NtNCED3, NtABI5, NtZDS and Ntβ-LCY to repress their transcription. Overall, these data suggested that NtPIF1 negatively regulate tobacco adaptive response to drought stress and carotenoids biosynthesis; moreover, NtPIF1 has the potential to develop drought-tolerant tobacco plants using CRISPR/Cas9 system.
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Affiliation(s)
- Shaohua Liu
- Key Laboratory of Tobacco Genetic Improvement and Biotechnology, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266100, China; Shenzhen Yupeng Technology Co., Ltd, Shenzhen 518110, China
| | - Yinchao Zhang
- Key Laboratory of Tobacco Genetic Improvement and Biotechnology, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266100, China
| | - Xuhao Pan
- Key Laboratory of Tobacco Genetic Improvement and Biotechnology, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266100, China
| | - Bin Li
- Sichuan Tobacco Corporation, Chengdu 610014, China
| | - Qing Yang
- Key Laboratory of Tobacco Genetic Improvement and Biotechnology, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266100, China
| | - Changqing Yang
- Key Laboratory of Tobacco Genetic Improvement and Biotechnology, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266100, China
| | | | - Fengyan Wu
- Key Laboratory of Tobacco Genetic Improvement and Biotechnology, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266100, China
| | - Aiguo Yang
- Key Laboratory of Tobacco Genetic Improvement and Biotechnology, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266100, China.
| | - Yiting Li
- Key Laboratory of Tobacco Genetic Improvement and Biotechnology, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266100, China.
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Davis I, Geng J, Liu A. Metalloenzymes involved in carotenoid biosynthesis in plants. Methods Enzymol 2022; 671:207-222. [PMID: 35878978 PMCID: PMC9315058 DOI: 10.1016/bs.mie.2022.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Carotenoids are a family of pigment compounds, a subset of which are precursors for vitamin A biosynthesis. These pigments are derived from isopentenyl pyrophosphate (IPP), with geranylgeranyl diphosphate being the first metabolite unique to carotenoid biosynthesis in plants, algae, fungi, some bacteria, and arthropods. This chapter highlights the metal-dependent enzymes involved in synthesizing carotenoids in plants and the current state of knowledge of their cofactors and mechanisms. Emphasis is given to spectroscopic methods used to characterize metal centers. The recently discovered heme-dependent isomerase Z-ISO is presented as a case study in how to interrogate a metalloenzyme. Use of UV-vis, electron paramagnetic resonance, and magnetic circular dichroism spectroscopies of a metal center at various oxidation states and with external small molecule probes (CN-, CO, and NO) can provide information about the nature of the metal center, the identity of its ligands, and its mechanism of action. Z-ISO is a histidine/cysteine ligated heme-dependent enzyme that is only active in the ferrous state and possesses redox-linked ligand switching. The choice and design of experiments are discussed as well as the conclusions that can be drawn.
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Affiliation(s)
- Ian Davis
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX, United States.
| | - Jiafeng Geng
- Department of Chemistry, Emory University, Atlanta, GA, United States
| | - Aimin Liu
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX, United States.
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Yang Y, Xu M, Luo Q, Wang J, Li H. De novo transcriptome analysis of Liriodendron chinense petals and leaves by Illumina sequencing. Gene 2013; 534:155-62. [PMID: 24239772 DOI: 10.1016/j.gene.2013.10.073] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 09/21/2013] [Accepted: 10/27/2013] [Indexed: 12/31/2022]
Abstract
Liriodendron chinense (Hemsl.) Sarg is an endangered species and occupies a pivotal position in phylogenetic studies of flowering plants, while its genomic resources are limited. In this study, we performed transcriptome sequencing for L. chinense petals and leaves using the Illumina paired-end sequencing technique. Approximately 17.02-Gb clean reads were obtained, and de novo assembly generated 87,841 unigenes, with an average length of 778 bp. Of these, there were 65,535 (74.61%) unigenes with significant similarity to publically available plant protein sequences. There were 3386 genes identified as significant differentially expressed between petals and leaves, among them 2969 (87.68%) were up-regulated and 417 (12.31%) down-regulated in petals. Metabolic pathway analysis revealed that 25 unigenes were predicted to be responsible for the biosynthesis of carotenoids, with 7 genes differentially expressed between these two tissues. This report is the first to identify genes associated with carotenoid biosynthesis in Liriodendron and represents a valuable resource for future genomic studies on the endangered species L. chinense.
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Affiliation(s)
- Ying Yang
- Key Laboratory of Forest Genetics & Gene Engineering of the Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Meng Xu
- Key Laboratory of Forest Genetics & Gene Engineering of the Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Qunfeng Luo
- Key Laboratory of Forest Genetics & Gene Engineering of the Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Jie Wang
- Key Laboratory of Forest Genetics & Gene Engineering of the Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Huogen Li
- Key Laboratory of Forest Genetics & Gene Engineering of the Ministry of Education, Nanjing Forestry University, Nanjing 210037, China.
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