ArticleMolecular biology reports2014
Down-regulation of sweetpotato lycopene β-cyclase gene enhances tolerance to abiotic stress in transgenic calli.
Article in Molecular biology reports, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed, 56 citations in OpenAlex.
- Can continuous light mitigate the detrimental actions of salinity stress in facultative CAM plants?Photosynthesis research · 2026Article
- Quality attributes, antioxidant activity and color profile of orange-fleshed sweet potato grown in Vietnam.Food chemistry: X · 2024Article
- Carotenoid biosynthesis genes LcLCYB, LcLCYE, and LcBCH from wolfberry confer increased carotenoid content and improved salt tolerance in tobacco.Scientific reports · 2024Article
- Distinct growth patterns in seedling and tillering wheat plants suggests a developmentally restricted role of HYD2 in salt-stress response.Plant cell reports · 2024Article
- Improvements in the Appearance and Nutritional Quality of Tomato Fruits Resulting from Foliar Spraying with Silicon.Foods (Basel, Switzerland) · 2024Article
- Integrated metabolic and transcriptional analysis reveals the role of carotenoid cleavage dioxygenase 4 (IbCCD4) in carotenoid accumulation in sweetpotato tuberous roots.Biotechnology for biofuels and bioproducts · 2023Article
- Overexpression of Sweet Potato Carotenoid Cleavage Dioxygenase 4 (International journal of molecular sciences · 2022Article
- A C2-Domain Abscisic Acid-Related Gene,International journal of molecular sciences · 2022Article
- Comparative transcriptome analysis implied a ZEP paralog was a key gene involved in carotenoid accumulation in yellow-fleshed sweetpotato.Scientific reports · 2020Article
- Over-Expression ofFrontiers in plant science · 2020Article
- A single amino acid change at position 96 (Arg to His) of the sweetpotato Orange protein leads to carotenoid overaccumulation.Plant cell reports · 2019Article
- A novel sweetpotato bZIP transcription factor gene, IbbZIP1, is involved in salt and drought tolerance in transgenic Arabidopsis.Plant cell reports · 2019Article
- Implication of salt stress induces changes in pigment production, antioxidant enzyme activity, and qRT-PCR expression of genes involved in the biosynthetic pathway of Bixa orellana L.Functional & integrative genomics · 2019Article
- Sweetpotato bZIP Transcription FactorFrontiers in plant science · 2019Article
- A Sweetpotato Auxin Response Factor Gene (Frontiers in plant science · 2018Article
- A Histone Code Reader and a Transcriptional Activator Interact to Regulate Genes for Salt Tolerance.Plant physiology · 2017Article
- Functional components in sweetpotato and their genetic improvement.Breeding science · 2017Review
- Metabolic engineering of carotenoids in transgenic sweetpotato.Breeding science · 2017Review
- Carotenoid Cleavage Oxygenases from Microbes and Photosynthetic Organisms: Features and Functions.International journal of molecular sciences · 2016Review
- Orange protein has a role in phytoene synthase stabilization in sweetpotato.Scientific reports · 2016Article
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Lycopene β-cyclase (LCY-β) is a key enzyme involved in the synthesis of α- and β-branch carotenoids such as α-carotene and β-carotene through the cyclization of lycopene. IbLCY-β had a length of 1,506 bp and approximately 80 % nucleotide sequence identity with that of tomato LCY-β. IbLCY-β was strongly expressed in leaves, and expression was enhanced by salt-stress and osmotic-stress conditions. To characterize the LCY-β gene (IbLCY-β) of sweetpotato (Ipomoea batatas), it was isolated and transformed into calli of white-fleshed sweetpotato using an IbLCY-β-RNAi vector. Transgenic IbLCY-β-RNAi calli had yellow to orange color and higher antioxidant activity compared to that of white, nontransgenic (NT) calli. Transgenic cells had significantly higher contents of total carotenoids, although lycopene was not detected in transgenic or NT cells. All transgenic calli had strongly activated expression of carotenoid biosynthetic genes such as β-carotene hydroxylases (CHY-β), cytochrome P450 monooxygenases (P450), and carotenoid cleavage dioxigenase 1 (CCD1). Transgenic cells exhibited less salt-induced oxidative-stress damage compared to that of NT cells, and also had greater tolerance for polyethylene glycol (PEG)-mediated drought compared to that of NT cells, due to the higher water content and reduced malondialdehyde (MDA) content. The abscisic acid content was also higher in transgenic cells. These results show that a study of IbLCY-β can facilitate understanding of the carotenoid biosynthetic pathway in sweetpotato. IbLCY-β could be useful for developing transgenic sweetpotato enriched with nutritional carotenoids and with greater tolerance to abiotic stresses.
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