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Kössler S, Armarego-Marriott T, Tarkowská D, Turečková V, Agrawal S, Mi J, de Souza LP, Schöttler MA, Schadach A, Fröhlich A, Bock R, Al-Babili S, Ruf S, Sampathkumar A, Moreno JC. Lycopene β-cyclase expression influences plant physiology, development, and metabolism in tobacco plants. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:2544-2569. [PMID: 33484250 PMCID: PMC8006556 DOI: 10.1093/jxb/erab029] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 01/19/2021] [Indexed: 05/12/2023]
Abstract
Carotenoids are important isoprenoids produced in the plastids of photosynthetic organisms that play key roles in photoprotection and antioxidative processes. β-Carotene is generated from lycopene by lycopene β-cyclase (LCYB). Previously, we demonstrated that the introduction of the Daucus carota (carrot) DcLCYB1 gene into tobacco (cv. Xanthi) resulted in increased levels of abscisic acid (ABA) and especially gibberellins (GAs), resulting in increased plant yield. In order to understand this phenomenon prior to exporting this genetic strategy to crops, we generated tobacco (Nicotiana tabacum cv. Petit Havana) mutants that exhibited a wide range of LCYB expression. Transplastomic plants expressing DcLCYB1 at high levels showed a wild-type-like growth, even though their pigment content was increased and their leaf GA1 content was reduced. RNA interference (RNAi) NtLCYB lines showed different reductions in NtLCYB transcript abundance, correlating with reduced pigment content and plant variegation. Photosynthesis (leaf absorptance, Fv/Fm, and light-saturated capacity of linear electron transport) and plant growth were impaired. Remarkably, drastic changes in phytohormone content also occurred in the RNAi lines. However, external application of phytohormones was not sufficient to rescue these phenotypes, suggesting that altered photosynthetic efficiency might be another important factor explaining their reduced biomass. These results show that LCYB expression influences plant biomass by different mechanisms and suggests thresholds for LCYB expression levels that might be beneficial or detrimental for plant growth.
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Affiliation(s)
- Stella Kössler
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
| | - Tegan Armarego-Marriott
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
| | - Danuše Tarkowská
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences and Palacký University, Šlechtitelů, Olomouc, Czech Republic
| | - Veronika Turečková
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences and Palacký University, Šlechtitelů, Olomouc, Czech Republic
| | - Shreya Agrawal
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
| | - Jianing Mi
- Center for Desert Agriculture, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Leonardo Perez de Souza
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
| | - Mark Aurel Schöttler
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
| | - Anne Schadach
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
| | - Anja Fröhlich
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
| | - Ralph Bock
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
| | - Salim Al-Babili
- Center for Desert Agriculture, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Stephanie Ruf
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
| | - Arun Sampathkumar
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
| | - Juan C Moreno
- Max Planck Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg1 D-14476, Potsdam-Golm, Germany
- Center for Desert Agriculture, Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
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Shi Y, Guo J, Zhang W, Jin L, Liu P, Chen X, Li F, Wei P, Li Z, Li W, Wei C, Zheng Q, Chen Q, Zhang J, Lin F, Qu L, Snyder JH, Wang R. Cloning of the Lycopene β-cyclase Gene in Nicotiana tabacum and Its Overexpression Confers Salt and Drought Tolerance. Int J Mol Sci 2015; 16:30438-57. [PMID: 26703579 PMCID: PMC4691183 DOI: 10.3390/ijms161226243] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 12/11/2015] [Accepted: 12/15/2015] [Indexed: 12/24/2022] Open
Abstract
Carotenoids are important pigments in plants that play crucial roles in plant growth and in plant responses to environmental stress. Lycopene β cyclase (β-LCY) functions at the branch point of the carotenoid biosynthesis pathway, catalyzing the cyclization of lycopene. Here, a β-LCY gene from Nicotiana tabacum, designated as Ntβ-LCY1, was cloned and functionally characterized. Robust expression of Ntβ-LCY1 was found in leaves, and Ntβ-LCY1 expression was obviously induced by salt, drought, and exogenous abscisic acid treatments. Strong accumulation of carotenoids and expression of carotenoid biosynthesis genes resulted from Ntβ-LCY1 overexpression. Additionally, compared to wild-type plants, transgenic plants with overexpression showed enhanced tolerance to salt and drought stress with higher abscisic acid levels and lower levels of malondialdehyde and reactive oxygen species. Conversely, transgenic RNA interference plants had a clear albino phenotype in leaves, and some plants did not survive beyond the early developmental stages. The suppression of Ntβ-LCY1 expression led to lower expression levels of genes in the carotenoid biosynthesis pathway and to reduced accumulation of carotenoids, chlorophyll, and abscisic acid. These results indicate that Ntβ-LCY1 is not only a likely cyclization enzyme involved in carotenoid accumulation but also confers salt and drought stress tolerance in Nicotiana tabacum.
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Affiliation(s)
- Yanmei Shi
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China.
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Jinggong Guo
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China.
| | - Wei Zhang
- China National Tobacco Quality Supervision & Test Centre, Zhengzhou 450001, Henan, China.
| | - Lifeng Jin
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Pingping Liu
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Xia Chen
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Feng Li
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Pan Wei
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Zefeng Li
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Wenzheng Li
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650031, Yunnan, China.
| | - Chunyang Wei
- Staff Training Academy of CNTC, Zhengzhou 450008, Henan, China.
| | - Qingxia Zheng
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Qiansi Chen
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Jianfeng Zhang
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Fucheng Lin
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Lingbo Qu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China.
| | - John Hugh Snyder
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
| | - Ran Wang
- National Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou 450001, Henan, China.
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Liu JX, Chiou CY, Shen CH, Chen PJ, Liu YC, Jian CD, Shen XL, Shen FQ, Yeh KW. RNA interference-based gene silencing of phytoene synthase impairs growth, carotenoids, and plastid phenotype in Oncidium hybrid orchid. SPRINGERPLUS 2014; 3:478. [PMID: 25221736 PMCID: PMC4161717 DOI: 10.1186/2193-1801-3-478] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 08/18/2014] [Indexed: 12/23/2022]
Abstract
Phytoene synthase (PSY) is the first rate-limiting regulatory enzyme in the carotenoid biosynthesis pathway. In order to modify the floral color pattern by reducing carotenoid contents, a phytoene synthase-RNAi construct was delivered into protocorm-like body (PLB) of Oncidium hybrid orchid. The transgenic orchids show down-regulated level of PSY and geranyl synthase gene. They displayed semi-dwarf phenotype and brilliant green leaves. The microscopic anatomy revealed development-arrested plastids with rare grana. The total carotenoid content was decreased and the efficiency of the photosynthetic electron transport was declined. The chlorophyll level and the expression of chlorophyll biosynthetic genes, such as OgGLUTR and OgCS were dramatically reduced. HPLC analysis showed that the endogenous level of gibberellic acid and abscisic acid in the dwarf transformants are 4-fold lower than in wild type plants. In addition, chilling tolerance of the transgenic Oncidium plants was reduced. The data showed that down-regulation of PSY resulted in alterations of gene expression in enzymes involved in many metabolic pathways, such as carotenoid, gibberellic acid, abscisic acid and chlorophyll biosynthetic pathway as well as causes predominant defects in plant growth and development.
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Affiliation(s)
- Jian-Xin Liu
- />Flower Research and Development Center, Zhejiang Academy of Agricultural Science, Hangzhou, 311202 Zhejiang China
| | - Chung-Yi Chiou
- />Institute of Plant Biology, College of Life Science, National Taiwan University, Roosevelt Road, Taipei, 10617 Taiwan
- />Institute of Bioinformatics and Structural Biology & Department of Life Science, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu, 30013 Taiwan
| | - Chin-Hui Shen
- />Institute of Plant Biology, College of Life Science, National Taiwan University, Roosevelt Road, Taipei, 10617 Taiwan
- />Ecological Materials Technology Department, Green Energy & Eco-technology System Center, ITRI South Campus, Industrial Technology Research Institute, Tainan, Taiwan
| | - Peng-Jen Chen
- />Institute of Plant Biology, College of Life Science, National Taiwan University, Roosevelt Road, Taipei, 10617 Taiwan
| | - Yao-Chung Liu
- />Institute of Plant Biology, College of Life Science, National Taiwan University, Roosevelt Road, Taipei, 10617 Taiwan
| | - Chin-Der Jian
- />Institute of Forestry Research, Council of Agriculture, Taipei, Taiwan
| | - Xiao-Lan Shen
- />Flower Research and Development Center, Zhejiang Academy of Agricultural Science, Hangzhou, 311202 Zhejiang China
| | - Fu-Quan Shen
- />Flower Research and Development Center, Zhejiang Academy of Agricultural Science, Hangzhou, 311202 Zhejiang China
| | - Kai-Wun Yeh
- />Institute of Plant Biology, College of Life Science, National Taiwan University, Roosevelt Road, Taipei, 10617 Taiwan
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