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Smirnoff N, Wheeler GL. The ascorbate biosynthesis pathway in plants is known, but there is a way to go with understanding control and functions. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:2604-2630. [PMID: 38300237 PMCID: PMC11066809 DOI: 10.1093/jxb/erad505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/29/2024] [Indexed: 02/02/2024]
Abstract
Ascorbate (vitamin C) is one of the most abundant primary metabolites in plants. Its complex chemistry enables it to function as an antioxidant, as a free radical scavenger, and as a reductant for iron and copper. Ascorbate biosynthesis occurs via the mannose/l-galactose pathway in green plants, and the evidence for this pathway being the major route is reviewed. Ascorbate accumulation is leaves is responsive to light, reflecting various roles in photoprotection. GDP-l-galactose phosphorylase (GGP) is the first dedicated step in the pathway and is important in controlling ascorbate synthesis. Its expression is determined by a combination of transcription and translation. Translation is controlled by an upstream open reading frame (uORF) which blocks translation of the main GGP-coding sequence, possibly in an ascorbate-dependent manner. GGP associates with a PAS-LOV protein, inhibiting its activity, and dissociation is induced by blue light. While low ascorbate mutants are susceptible to oxidative stress, they grow nearly normally. In contrast, mutants lacking ascorbate do not grow unless rescued by supplementation. Further research should investigate possible basal functions of ascorbate in severely deficient plants involving prevention of iron overoxidation in 2-oxoglutarate-dependent dioxygenases and iron mobilization during seed development and germination.
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Affiliation(s)
- Nicholas Smirnoff
- Biosciences, Faculty of Health and Life Sciences, Exeter EX4 4QD, UK
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Li B, Qu S, Kang J, Peng Y, Yang N, Ma B, Ruan YL, Ma F, Li M, Zhu L. The MdCBF1/2-MdTST1/2 module regulates sugar accumulation in response to low temperature in apple. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:787-801. [PMID: 38206080 DOI: 10.1111/tpj.16633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 12/21/2023] [Accepted: 01/03/2024] [Indexed: 01/12/2024]
Abstract
Soluble sugar content is a key component in controlling fruit flavor, and its accumulation in fruit is largely determined by sugar metabolism and transportation. When the diurnal temperature range is greater, the fleshy fruits accumulated more soluble sugars and become more sweeter. However, the molecular mechanism underlying this response remains largely unknown. In this study, we verified that low-temperature treatment promoted soluble sugar accumulation in apple fruit and found that this was due to the upregulation of the Tonoplast Sugar Transporter genes MdTST1/2. A combined strategy using assay for transposase-accessible chromatin (ATAC) sequencing and gene expression and cis-acting elements analyses, we identified two C-repeat Binding Factors, MdCBF1 and MdCBF2, that were induced by low temperature and that might be upstream transcription factors of MdTST1/2. Further studies established that MdCBF1/2 could bind to the promoters of MdTST1/2 and activate their expression. Overexpression of MdCBF1 or MdCBF2 in apple calli and fruit significantly upregulated MdTST1/2 expression and increased the concentrations of glucose, fructose, and sucrose. Suppression of MdTST1 and/or MdTST2 in an MdCBF1/2-overexpression background abolished the positive effect of MdCBF1/2 on sugar accumulation. In addition, simultaneous silencing of MdCBF1/2 downregulated MdTST1/2 expression and apple fruits failed to accumulate more sugars under low-temperature conditions, indicating that MdCBF1/2-mediated sugar accumulation was dependent on MdTST1/2 expression. Hence, we concluded that the MdCBF1/2-MdTST1/2 module is crucial for sugar accumulation in apples in response to low temperatures. Our findings provide mechanistic components coordinating the relationship between low temperature and sugar accumulation as well as new avenues to improve fruit quality.
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Affiliation(s)
- Baiyun Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Shengtao Qu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jiayi Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yunjing Peng
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Nanxiang Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Baiquan Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yong-Ling Ruan
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Mingjun Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Lingcheng Zhu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- College of Life Science, Northwest A&F University, Yangling, Shaanxi, 712100, China
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Cong L, Shi YK, Gao XY, Zhao XF, Zhang HQ, Zhou FL, Zhang HJ, Ma BQ, Zhai R, Yang CQ, Wang ZG, Ma FW, Xu LF. Transcription factor PbNAC71 regulates xylem and vessel development to control plant height. PLANT PHYSIOLOGY 2024; 195:395-409. [PMID: 38198215 DOI: 10.1093/plphys/kiae011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/13/2023] [Accepted: 12/08/2023] [Indexed: 01/12/2024]
Abstract
Dwarfism is an important agronomic trait in fruit breeding programs. However, the germplasm resources required to generate dwarf pear (Pyrus spp.) varieties are limited. Moreover, the mechanisms underlying dwarfism remain unclear. In this study, "Yunnan" quince (Cydonia oblonga Mill.) had a dwarfing effect on "Zaosu" pear. Additionally, the dwarfism-related NAC transcription factor gene PbNAC71 was isolated from pear trees comprising "Zaosu" (scion) grafted onto "Yunnan" quince (rootstock). Transgenic Nicotiana benthamiana and pear OHF-333 (Pyrus communis) plants overexpressing PbNAC71 exhibited dwarfism, with a substantially smaller xylem and vessel area relative to the wild-type controls. Yeast one-hybrid, dual-luciferase, chromatin immunoprecipitation-qPCR, and electrophoretic mobility shift assays indicated that PbNAC71 downregulates PbWalls are thin 1 expression by binding to NAC-binding elements in its promoter. Yeast two-hybrid assays showed that PbNAC71 interacts with the E3 ubiquitin ligase PbRING finger protein 217 (PbRNF217). Furthermore, PbRNF217 promotes the ubiquitin-mediated degradation of PbNAC71 by the 26S proteasome, thereby regulating plant height as well as xylem and vessel development. Our findings reveal a mechanism underlying pear dwarfism and expand our understanding of the molecular basis of dwarfism in woody plants.
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Affiliation(s)
- Liu Cong
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Yi-Ke Shi
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Xin-Yi Gao
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Xiao-Fei Zhao
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Hai-Qi Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Feng-Li Zhou
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Hong-Juan Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Bai-Quan Ma
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Rui Zhai
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Cheng-Quan Yang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Zhi-Gang Wang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Feng-Wang Ma
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Ling-Fei Xu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi Province 712100, China
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Zhao H, Wan S, Huang Y, Li X, Jiao T, Zhang Z, Ma B, Zhu L, Ma F, Li M. The transcription factor MdBPC2 alters apple growth and promotes dwarfing by regulating auxin biosynthesis. THE PLANT CELL 2024; 36:585-604. [PMID: 38019898 PMCID: PMC10896295 DOI: 10.1093/plcell/koad297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/24/2023] [Accepted: 11/26/2023] [Indexed: 12/01/2023]
Abstract
Auxin plays important roles throughout plant growth and development. However, the mechanisms of auxin regulation of plant structure are poorly understood. In this study, we identified a transcription factor (TF) of the BARLEY B RECOMBINANT/BASIC PENTACYSTEINE (BBR/BPC) family in apple (Malus × domestica), MdBPC2. It was highly expressed in dwarfing rootstocks, and it negatively regulated auxin biosynthesis. Overexpression of MdBPC2 in apple decreased plant height, altered leaf morphology, and inhibited root system development. These phenotypes were due to reduced auxin levels and were restored reversed after exogenous indole acetic acid (IAA) treatment. Silencing of MdBPC2 alone had no obvious phenotypic effect, while silencing both Class I and Class II BPCs in apple significantly increased auxin content in plants. Biochemical analysis demonstrated that MdBPC2 directly bound to the GAGA-rich element in the promoters of the auxin synthesis genes MdYUC2a and MdYUC6b, inhibiting their transcription and reducing auxin accumulation in MdBPC2 overexpression lines. Further studies established that MdBPC2 interacted with the polycomb group (PcG) protein LIKE HETEROCHROMATIN PROTEIN 1 (LHP1) to inhibit MdYUC2a and MdYUC6b expression via methylation of histone 3 lysine 27 (H3K27me3). Silencing MdLHP1 reversed the negative effect of MdBPC2 on auxin accumulation. Our results reveal a dwarfing mechanism in perennial woody plants involving control of auxin biosynthesis by a BPC transcription factor, suggesting its use for genetic improvement of apple rootstock.
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Affiliation(s)
- Haiyan Zhao
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Shuyuan Wan
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Yanni Huang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Xiaoqiang Li
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Tiantian Jiao
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Zhijun Zhang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Baiquan Ma
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Lingcheng Zhu
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Fengwang Ma
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Mingjun Li
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi, China
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Su J, Li M, Yang H, Shu H, Yu K, Cao H, Xu G, Wang M, Zhu Y, Zhu Y, Ma C, Shao J. Enrichment of grape berries and tomato fruit with health-promoting tartaric acid by expression of the Vitis vinifera transketolase VvTK2 gene. Int J Biol Macromol 2024; 257:128734. [PMID: 38086429 DOI: 10.1016/j.ijbiomac.2023.128734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 01/27/2024]
Abstract
Tartaric acid (TA) is a major non-fermentable plant soluble acid that abundantly occur in grapes and wines, imparting low pH and tart flavour to berries thereby regulating numerous quality attributes of wine, such as flavour, microbial stability, and aging potential. Evaluation of acidity in mature fruits of 21 wine grape (Vitis vinifera) varieties revealed significant variation between 'Beichun' and 'Gewürztraminer', which was correlated with TA content. RNA-seq analysis of fruits from the two cultivars at different developmental stages revealed that a transketolase gene, VvTK2, was significantly dominantly expressed in the high TA phenotype 'Beichun' variety. Subcellular localization assay showed that VvTK2 protein was located in the chloroplast. Virus-induced VvTK2 gene silencing significantly decreased the expression of 2-keto-L-gulonic acid reductase (Vv2-KGR) as well as L-idonate dehydrogenase (VvL-IdnDH3) and inhibited TA accumulation, while its transient over-expression in grape showed the opposite results. Heterologous VvTK2 over-expression in tomato demonstrated its obvious capacity to induce TA synthesis. Overall, these results highlights a novel role of VvTK2 in modulating TA biosynthesis, which could be an excellent strategy for future genetic improvement of grape flavour.
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Affiliation(s)
- Jing Su
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan, China
| | - Menghan Li
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan, China
| | - Huanqi Yang
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan, China
| | - Helin Shu
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan, China
| | - Kunmiao Yu
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan, China
| | - Huiling Cao
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan, China
| | - Gezhe Xu
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan, China
| | - Minghui Wang
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan, China
| | - Yifan Zhu
- College of Plant protection, Yunnan Agricultural University, Kunming 650201, Yunnan, China
| | - Yingan Zhu
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan, China
| | - Chunhua Ma
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650201, Yunnan, China.
| | - Jianhui Shao
- College of Plant protection, Yunnan Agricultural University, Kunming 650201, Yunnan, China.
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Wang C, Luo J, He W, Huang A, Lu W, Lin Y, Ou Y. Genome-wide identification and expression analysis of GDP-D-mannose pyrophosphorylase and KATANIN in Corymbia citriodora. FRONTIERS IN PLANT SCIENCE 2023; 14:1308354. [PMID: 38186597 PMCID: PMC10766700 DOI: 10.3389/fpls.2023.1308354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 12/05/2023] [Indexed: 01/09/2024]
Abstract
The GDP-D-mannose pyrophosphorylase (GMP) and microtubule severing enzyme KATANIN (KTN) are crucial for wood formation. Although functional identification has been performed in Arabidopsis, few comprehensive studies have been conducted in forest trees. In this study, we discovered 8 CcGMP and 4 CcKTN genes by analyzing the whole genome sequence of Corymbia citriodora. The chromosomal location, genome synteny, phylogenetic relationship, protein domain, motif identification, gene structure, cis-acting regulatory elements, and protein-interaction of CcGMP and CcKTN were all investigated. KTN has just one pair of segmentally duplicated genes, while GMP has no duplication events. According to gene structure, two 5' UTRs were identified in CcGMP4. Furthermore, there is no protein-interaction between KTN and GMP. Based on real-time PCR, the expression of most genes showed a positive connection with DBH diameters. In addition, the expression of CcGMP4 and CcKTN4 genes were greater in different size tree, indicating that these genes are important in secondary xylem production. Overall, this findings will enhance our comprehension of the intricacy of CcGMP&CcKTN across diverse DBHs and furnish valuable insights for future functional characterization of specific genes in C. citriodora.
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Affiliation(s)
- Chubiao Wang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Jianzhong Luo
- Research Institute of Fast-Growing Trees, Chinese Academy of Forestry, Zhanjiang, China
| | - Wenliang He
- Research Institute of Fast-Growing Trees, Chinese Academy of Forestry, Zhanjiang, China
| | - Anying Huang
- Research Institute of Fast-Growing Trees, Chinese Academy of Forestry, Zhanjiang, China
| | - Wanhong Lu
- Research Institute of Fast-Growing Trees, Chinese Academy of Forestry, Zhanjiang, China
| | - Yan Lin
- Research Institute of Fast-Growing Trees, Chinese Academy of Forestry, Zhanjiang, China
| | - Yuduan Ou
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
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Wang J, Zhang C, Li H, Xu Y, Zhang B, Zheng F, Zhao B, Zhang H, Zhao H, Liu B, Xiao M, Zhang Z. OsJAB1 Positively Regulates Ascorbate Biosynthesis and Negatively Regulates Salt Tolerance Due to Inhibiting Early-Stage Salt-Induced ROS Accumulation in Rice. PLANTS (BASEL, SWITZERLAND) 2023; 12:3859. [PMID: 38005759 PMCID: PMC10675544 DOI: 10.3390/plants12223859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023]
Abstract
Reactive oxygen species (ROS) play dual roles in plant stress response, but how plants modulate the dual roles of ROS in stress response is still obscure. OsJAB1 (JUN-activation-domain-binding protein 1) encodes the rice CSN5 (COP9 signalsome subunit 5). This study showed that, similar to the Arabidopsis homolog gene CSN5B, OsJAB1-overexpressing (driven by a CaMV 35S promoter) plants (OEs) impaired rice salt stress tolerance; in contrast, OsJAB1-inhibited-expression (using RNA-interfering technology) plants (RIs) enhanced rice salt stress tolerance. Differing from CSN5B that negatively regulated ascorbate (Asc) biosynthesis, Asc content increased in OEs and decreased in RIs. ROS analysis showed that RIs clearly increased, but OEs inhibited ROS accumulation at the early stage of salt treatment; in contrast, RIs clearly decreased, but OEs promoted ROS accumulation at the late stage of salt treatment. The qPCR revealed that OEs decreased but RIs enhanced the expressions of ROS-scavenging genes. This indicated that OsJAB1 negatively regulated rice salt stress tolerance by suppressing the expression of ROS-scavenging genes. This study provided new insights into the CSN5 homologous protein named OsJAB1 in rice, which developed different functions during long-term evolution. How OsJAB1 regulates the Asc biosynthesis that coordinates the balance between cell redox signaling and ROS scavenging needs to be investigated in the future.
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Affiliation(s)
- Jiayi Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
| | - Chuanyu Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
| | - Hua Li
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
| | - Yuejun Xu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
- National Key Facility of Crop Gene Resources and Genetic Improvement, Sanya 571763, China
| | - Bo Zhang
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China; (B.Z.); (F.Z.); (B.Z.); (B.L.)
| | - Fuyu Zheng
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China; (B.Z.); (F.Z.); (B.Z.); (B.L.)
| | - Beiping Zhao
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China; (B.Z.); (F.Z.); (B.Z.); (B.L.)
| | - Haiwen Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
| | - Hui Zhao
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China;
| | - Baohai Liu
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China; (B.Z.); (F.Z.); (B.Z.); (B.L.)
| | - Minggang Xiao
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China; (B.Z.); (F.Z.); (B.Z.); (B.L.)
| | - Zhijin Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (J.W.); (C.Z.); (H.L.); (Y.X.); (H.Z.)
- National Key Facility of Crop Gene Resources and Genetic Improvement, Sanya 571763, China
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Aarabi F, Fernie AR. SPOTLIGHT: Ascorbate triggers the switch between cell division and cell differentiation in the Arabidopsis tapetum. JOURNAL OF PLANT PHYSIOLOGY 2023; 288:154058. [PMID: 37567050 DOI: 10.1016/j.jplph.2023.154058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/28/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023]
Affiliation(s)
- Fayezeh Aarabi
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany.
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Tian X, Zou H, Xiao Q, Xin H, Zhu L, Li Y, Ma B, Cui N, Ruan YL, Ma F, Li M. Uptake of glucose from the rhizosphere, mediated by apple MdHT1.2, regulates carbohydrate allocation. PLANT PHYSIOLOGY 2023; 193:410-425. [PMID: 37061824 DOI: 10.1093/plphys/kiad221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 04/12/2023] [Indexed: 06/19/2023]
Abstract
Plant roots can absorb sugars from the rhizosphere, which reduces the consumption of carbon derived from photosynthesis. However, the underlying mechanisms that roots use to control sugar absorption from soil are poorly understood. Here, we identified an apple (Malus × domestica Borkh.) hexose transporter, MdHT1.2, that functions on the root epidermis to absorb glucose (Glc) from the rhizosphere. Based on RNA-seq data, MdHT1.2 showed the highest expression level among 29 MdHT genes in apple roots. Biochemical analyses demonstrated that MdHT1.2 was mainly expressed in the epidermal cells of fine roots, and its protein was located on the plasma membrane. The roots of transgenic apple and Solanum lycopersicum lines overexpressing MdHT1.2 had an increased capability to absorb Glc when fed with [13C]-labeled Glc or 2-NBDG, whereas silencing MdHT1.2 in apple showed the opposite results. Further studies established that MdHT1.2-mediated Glc absorption from the rhizosphere changed the carbon assimilate allocation between apple shoot and root, which regulated plant growth. Additionally, a grafting experiment in tomato confirmed that increasing the Glc uptake capacity in the root overexpressing MdHT1.2 could facilitate carbohydrate partitioning to the fruit. Collectively, our study demonstrated that MdHT1.2 functions on the root epidermis to absorb rhizospheric Glc, which regulates the carbohydrate allocation for plant growth and fruit sugar accumulation.
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Affiliation(s)
- Xiaocheng Tian
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, China
| | - Hui Zou
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, China
| | - Qian Xiao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, China
| | - Haijun Xin
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, China
| | - Lingcheng Zhu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, China
| | - Yuxing Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, China
| | - Baiquan Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, China
| | - Ningbo Cui
- State Key Laboratory of Hydraulics and Mountain River Engineering & College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China
| | - Yong-Ling Ruan
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, China
- Division of Plant Sciences, Research School of Biology, The Australian National University, Canberra, ACT 2601, Australia
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, China
| | - Mingjun Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, China
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10
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Li S, Jing X, Tan Q, Wen B, Fu X, Li D, Chen X, Xiao W, Li L. The NAC transcription factor MdNAC29 negatively regulates drought tolerance in apple. FRONTIERS IN PLANT SCIENCE 2023; 14:1173107. [PMID: 37484477 PMCID: PMC10359905 DOI: 10.3389/fpls.2023.1173107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/05/2023] [Indexed: 07/25/2023]
Abstract
Drought stress is an adverse stimulus that affects agricultural production worldwide. NAC transcription factors are involved in plant development and growth but also play different roles in the abiotic stress response. Here, we isolated the apple MdNAC29 gene and investigated its role in regulating drought tolerance. Subcellular localization experiments showed that MdNAC29 was localized to the nucleus and transcription was induced by the PEG treatment. Over-expression of MdNAC29 reduced drought tolerance in apple plants, calli, and tobacco, and exhibited higher relative conductivity, malondialdehyde (MDA) content, and lower chlorophyll content under drought stress. The transcriptomic analyses revealed that MdNAC29 reduced drought resistance by modulating the expression of photosynthesis and leaf senescence-related genes. The qRT-PCR results showed that overexpression of MdNAC29 repressed the expression of drought-resistance genes. Yeast one-hybrid and dual-luciferase assays demonstrated that MdNAC29 directly repressed MdDREB2A expression. Moreover, the yeast two-hybrid and bimolecular fluorescence complementation assays demonstrated that MdNAC29 interacted with the MdPP2-B10 (F-box protein), which responded to drought stress, and MdPP2-B10 enhanced the repressive effect of MdNAC29 on the transcriptional activity of the MdDREB2A. Taken together, our results indicate that MdNAC29 is a negative regulator of drought resistance, and provide a theoretical basis for further molecular mechanism research.
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Affiliation(s)
- Sen Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Xiuli Jing
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Qiuping Tan
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Binbin Wen
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Xiling Fu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Dongmei Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Xiude Chen
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Wei Xiao
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
| | - Ling Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Shandong Agricultural University, Tai’an, China
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11
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Liao G, Xu Q, Allan AC, Xu X. L-Ascorbic acid metabolism and regulation in fruit crops. PLANT PHYSIOLOGY 2023; 192:1684-1695. [PMID: 37073491 PMCID: PMC10315321 DOI: 10.1093/plphys/kiad241] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/03/2023] [Accepted: 04/10/2023] [Indexed: 05/03/2023]
Abstract
L-Ascorbic acid (AsA) is more commonly known as vitamin C and is an indispensable compound for human health. As a major antioxidant, AsA not only maintains redox balance and resists biological and abiotic stress but also regulates plant growth, induces flowering, and delays senescence through complex signal transduction networks. However, AsA content varies greatly in horticultural crops, especially in fruit crops. The AsA content of the highest species is approximately 1,800 times higher than that of the lowest species. There have been significant advancements in the understanding of AsA accumulation in the past 20 years. The most noteworthy accomplishment was the identification of the critical rate-limiting genes for the 2 major AsA synthesis pathways (L-galactose pathway and D-galacturonic acid pathway) in fruit crops. The rate-limiting genes of the former are GMP, GME, GGP, and GPP, and the rate-limiting gene of the latter is GalUR. Moreover, APX, MDHAR, and DHAR are also regarded as key genes in degradation and regeneration pathways. Interestingly, some of these key genes are sensitive to environmental factors, such as GGP being induced by light. The efficiency of enhancing AsA content is high by editing upstream open reading frames (uORF) of the key genes and constructing multi-gene expression vectors. In summary, the AsA metabolism has been well understood in fruit crops, but the transport mechanism of AsA and the synergistic improvement of AsA and other traits is less known, which will be the focus of AsA research in fruit crops.
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Affiliation(s)
- Guanglian Liao
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, PR China
- Kiwifruit Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China
| | - Qiang Xu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, PR China
| | - Andrew C Allan
- The New Zealand Institute for Plant and Food Research Limited (Plant & Food Research) Mt Albert, Private Bag 92169, Auckland Mail Centre, Auckland 1142, New Zealand
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Xiaobiao Xu
- Kiwifruit Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, PR China
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12
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Zhu L, Li Y, Wang C, Wang Z, Cao W, Su J, Peng Y, Li B, Ma B, Ma F, Ruan YL, Li M. The SnRK2.3-AREB1-TST1/2 cascade activated by cytosolic glucose regulates sugar accumulation across tonoplasts in apple and tomato. NATURE PLANTS 2023; 9:951-964. [PMID: 37291399 DOI: 10.1038/s41477-023-01443-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 05/12/2023] [Indexed: 06/10/2023]
Abstract
Soluble sugars are the core components of fruit quality, and the degree of sugar accumulation is largely determined by tonoplast-localized sugar transporters. We previously showed that two classes of tonoplast sugar transporters, MdERDL6 and MdTST1/2, coordinately regulate sugar accumulation in vacuoles. However, the mechanism underlying this coordination remains unknown. Here we discovered that two transcription factors, MdAREB1.1/1.2, regulate MdTST1/2 expression by binding their promoters in apple. The enhanced MdAREB1.1/1.2 expression in MdERDL6-1-overexpression plants resulted in an increase in MdTST1/2 expression and sugar concentration. Further studies established that MdSnRK2.3, whose expression could be regulated by expressing MdERDL6-1, could interact with and phosphorylate MdAREB1.1/1.2, thereby promoting the MdAREB1.1/1.2-mediated transcriptional activation of MdTST1/2. Finally, the orthologous SlAREB1.2 and SlSnRK2.3 exhibited similar functions in tomato fruit as in their apple counterparts. Together, our findings provide insights into the regulatory mechanism of tonoplast sugar transport exerted by SnRK2.3-AREB1-TST1/2 for fruit sugar accumulation.
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Affiliation(s)
- Lingcheng Zhu
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China
- College of Life Science, Northwest A&F University, Xianyang, China
| | - Yanzhen Li
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China
| | - Chengcheng Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China
| | - Zhiqi Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China
| | - Wenjing Cao
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China
| | - Jing Su
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China
| | - Yunjing Peng
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China
| | - Baiyun Li
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China
| | - Baiquan Ma
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China.
| | - Yong-Ling Ruan
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China.
- Division of Plant Sciences, Research School of Biology, The Australian National University, Canberra, Australian Capital Territory, Australia.
| | - Mingjun Li
- State Key Laboratory of Crop Stress Biology in Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Xianyang, China.
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13
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Gao G, Yang F, Wang C, Duan X, Li M, Ma Y, Wang F, Qi H. The transcription factor CmERFI-2 represses CmMYB44 expression to increase sucrose levels in oriental melon fruit. PLANT PHYSIOLOGY 2023; 192:1378-1395. [PMID: 36938625 PMCID: PMC10231561 DOI: 10.1093/plphys/kiad155] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 11/29/2022] [Accepted: 11/29/2022] [Indexed: 06/01/2023]
Abstract
Soluble sugar accumulation in fruit ripening determines fleshy fruit quality. However, the molecular mechanism for this process is not yet understood. Here, we showed a transcriptional repressor, CmMYB44 regulates sucrose accumulation and ethylene synthesis in oriental melon (Cucumis. melo var. makuwa Makino) fruit. Overexpressing CmMYB44 suppressed sucrose accumulation and ethylene production. Furthermore, CmMYB44 repressed the transcriptional activation of CmSPS1 (sucrose phosphate synthase 1) and CmACO1 (ACC oxidase 1), two key genes in sucrose and ethylene accumulation, respectively. During the later stages of fruit ripening, the repressive effect of CmMYB44 on CmSPS1 and CmACO1 could be released by overexpressing CmERFI-2 (ethylene response factor I-2) and exogenous ethylene in "HS" fruit (high sucrose accumulation fruit). CmERFI-2 acted upstream of CmMYB44 as a repressor by directly binding the CmMYB44 promoter region, indirectly stimulating the expression level of CmSPS1 and CmACO1. Taken together, we provided a molecular regulatory pathway mediated by CmMYB44, which determines the degree of sucrose and ethylene accumulation in oriental melon fruit and sheds light on transcriptional responses triggered by ethylene sensing that enable the process of fruit ripening.
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Affiliation(s)
- Ge Gao
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang 110866, China
| | - Fan Yang
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang 110866, China
| | - Cheng Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang 110866, China
| | - Xiaoyu Duan
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang 110866, China
| | - Meng Li
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang 110866, China
| | - Yue Ma
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Feng Wang
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Hongyan Qi
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
- Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang 110866, China
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14
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Wu SY, Hou LL, Zhu J, Wang YC, Zheng YL, Hou JQ, Yang ZN, Lou Y. Ascorbic acid-mediated reactive oxygen species homeostasis modulates the switch from tapetal cell division to cell differentiation in Arabidopsis. THE PLANT CELL 2023; 35:1474-1495. [PMID: 36781400 PMCID: PMC10118275 DOI: 10.1093/plcell/koad037] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
The major antioxidant L-ascorbic acid (AsA) plays important roles in plant growth, development, and stress responses. However, the importance of AsA concentration and the regulation of AsA metabolism in plant reproduction remain unclear. In Arabidopsis (Arabidopsis thaliana) anthers, the tapetum monolayer undergoes cell differentiation to support pollen development. Here, we report that a transcription factor, DEFECTIVE IN TAPETAL DEVELOPMENT AND FUNCTION 1 (TDF1), inhibits tapetal cell division leading to cell differentiation. We identified SKEWED5-SIMILAR 18 (SKS18) as a downstream target of TDF1. Enzymatic assays showed that SKS18, annotated as a multicopper oxidase-like protein, has ascorbate oxidase activity, leading to AsA oxidation. We also show that VITAMIN C DEFECTIVE1 (VTC1), an AsA biosynthetic enzyme, is negatively controlled by TDF1 to maintain proper AsA contents. Consistently, either knockout of SKS18 or VTC1 overexpression raised AsA concentrations, resulting in extra tapetal cells, while SKS18 overexpression in tdf1 or the vtc1-3 tdf1 double mutant mitigated their defective tapetum. We observed that high AsA concentrations caused lower accumulation of reactive oxygen species (ROS) in tapetal cells. Overexpression of ROS scavenging genes in tapetum restored excess cell divisions. Thus, our findings demonstrate that TDF1-regulated AsA balances cell division and cell differentiation in the tapetum through governing ROS homeostasis.
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Affiliation(s)
| | | | - Jun Zhu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Yi-Chen Wang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Yu-Ling Zheng
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Jian-Qiao Hou
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Zhong-Nan Yang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
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15
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Wang Y, Wang Z, Geng S, Du H, Chen B, Sun L, Wang G, Sha M, Dong T, Zhang X, Wang Q. Identification of the GDP-L-Galactose Phosphorylase Gene as a Candidate for the Regulation of Ascorbic Acid Content in Fruits of Capsicum annuum L. Int J Mol Sci 2023; 24:ijms24087529. [PMID: 37108695 PMCID: PMC10145300 DOI: 10.3390/ijms24087529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/08/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Ascorbic acid (AsA) is an antioxidant with significant functions in both plants and animals. Despite its importance, there has been limited research on the molecular basis of AsA production in the fruits of Capsicum annuum L. In this study, we used Illumina transcriptome sequencing (RNA-seq) technology to explore the candidate genes involved in AsA biosynthesis in Capsicum annuum L. A total of 8272 differentially expressed genes (DEGs) were identified by the comparative transcriptome analysis. Weighted gene co-expression network analysis identified two co-expressed modules related to the AsA content (purple and light-cyan modules), and eight interested DEGs related to AsA biosynthesis were selected according to gene annotations in the purple and light-cyan modules. Moreover, we found that the gene GDP-L-galactose phosphorylase (GGP) was related to AsA content, and silencing GGP led to a reduction in the AsA content in fruit. These results demonstrated that GGP is an important gene controlling AsA biosynthesis in the fruit of Capsicum annuum L. In addition, we developed capsanthin/capsorubin synthase as the reporter gene for visual analysis of gene function in mature fruit, enabling us to accurately select silenced tissues and analyze the results of silencing. The findings of this study provide the theoretical basis for future research to elucidate AsA biosynthesis in Capsicum annuum L.
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Affiliation(s)
- Yixin Wang
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), National Engineering Research Center for Vegetables, State Key Laboratory of Vegetable Biobreeding, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Zheng Wang
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), National Engineering Research Center for Vegetables, State Key Laboratory of Vegetable Biobreeding, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Sansheng Geng
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), National Engineering Research Center for Vegetables, State Key Laboratory of Vegetable Biobreeding, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Heshan Du
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), National Engineering Research Center for Vegetables, State Key Laboratory of Vegetable Biobreeding, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Bin Chen
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), National Engineering Research Center for Vegetables, State Key Laboratory of Vegetable Biobreeding, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Liang Sun
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Guoyun Wang
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), National Engineering Research Center for Vegetables, State Key Laboratory of Vegetable Biobreeding, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Meihong Sha
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), National Engineering Research Center for Vegetables, State Key Laboratory of Vegetable Biobreeding, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Tingting Dong
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), National Engineering Research Center for Vegetables, State Key Laboratory of Vegetable Biobreeding, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Xiaofen Zhang
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), National Engineering Research Center for Vegetables, State Key Laboratory of Vegetable Biobreeding, Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Qian Wang
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
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16
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Castro JC, Castro CG, Cobos M. Genetic and biochemical strategies for regulation of L-ascorbic acid biosynthesis in plants through the L-galactose pathway. FRONTIERS IN PLANT SCIENCE 2023; 14:1099829. [PMID: 37021310 PMCID: PMC10069634 DOI: 10.3389/fpls.2023.1099829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
Vitamin C (L-ascorbic acid, AsA) is an essential compound with pleiotropic functions in many organisms. Since its isolation in the last century, AsA has attracted the attention of the scientific community, allowing the discovery of the L-galactose pathway, which is the main pathway for AsA biosynthesis in plants. Thus, the aim of this review is to analyze the genetic and biochemical strategies employed by plant cells for regulating AsA biosynthesis through the L-galactose pathway. In this pathway, participates eight enzymes encoded by the genes PMI, PMM, GMP, GME, GGP, GPP, GDH, and GLDH. All these genes and their encoded enzymes have been well characterized, demonstrating their participation in AsA biosynthesis. Also, have described some genetic and biochemical strategies that allow its regulation. The genetic strategy includes regulation at transcriptional and post-transcriptional levels. In the first one, it was demonstrated that the expression levels of the genes correlate directly with AsA content in the tissues/organs of the plants. Also, it was proved that these genes are light-induced because they have light-responsive promoter motifs (e.g., ATC, I-box, GT1 motif, etc.). In addition, were identified some transcription factors that function as activators (e.g., SlICE1, AtERF98, SlHZ24, etc.) or inactivators (e.g., SlL1L4, ABI4, SlNYYA10) regulate the transcription of these genes. In the second one, it was proved that some genes have alternative splicing events and could be a mechanism to control AsA biosynthesis. Also, it was demonstrated that a conserved cis-acting upstream open reading frame (5'-uORF) located in the 5'-untranslated region of the GGP gene induces its post-transcriptional repression. Among the biochemical strategies discovered is the control of the enzyme levels (usually by decreasing their quantities), control of the enzyme catalytic activity (by increasing or decreasing its activity), feedback inhibition of some enzymes (GME and GGP), subcellular compartmentation of AsA, the metabolon assembly of the enzymes, and control of AsA biosynthesis by electron flow. Together, the construction of this basic knowledge has been establishing the foundations for generating genetically improved varieties of fruits and vegetables enriched with AsA, commonly used in animal and human feed.
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Affiliation(s)
- Juan C. Castro
- Unidad Especializada del Laboratorio de Investigación en Biotecnología (UELIB), Centro de Investigaciones de Recursos Naturales de la UNAP (CIRNA), Universidad Nacional de la Amazonia Peruana (UNAP), Iquitos, Peru
- Departamento Académico de Ciencias Biomédicas y Biotecnología (DACBB), Facultad de Ciencias Biológicas (FCB), Universidad Nacional de la Amazonia Peruana (UNAP), Iquitos, Peru
| | - Carlos G. Castro
- Unidad Especializada del Laboratorio de Investigación en Biotecnología (UELIB), Centro de Investigaciones de Recursos Naturales de la UNAP (CIRNA), Universidad Nacional de la Amazonia Peruana (UNAP), Iquitos, Peru
| | - Marianela Cobos
- Unidad Especializada del Laboratorio de Investigación en Biotecnología (UELIB), Centro de Investigaciones de Recursos Naturales de la UNAP (CIRNA), Universidad Nacional de la Amazonia Peruana (UNAP), Iquitos, Peru
- Departamento Académico de Ciencias Biomédicas y Biotecnología (DACBB), Facultad de Ciencias Biológicas (FCB), Universidad Nacional de la Amazonia Peruana (UNAP), Iquitos, Peru
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17
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Su J, Jiao T, Liu X, Zhu L, Ma B, Ma F, Li M. Calcyclin-binding protein-promoted degradation of MdFRUCTOKINASE2 regulates sugar homeostasis in apple. PLANT PHYSIOLOGY 2023; 191:1052-1065. [PMID: 36461944 PMCID: PMC9922394 DOI: 10.1093/plphys/kiac549] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/03/2022] [Indexed: 06/17/2023]
Abstract
Fructokinase (FRK) activates fructose through phosphorylation, which sends the activated fructose into primary metabolism and regulates fructose signaling capabilities in plants. The apple (Malus × domestica) FRK gene MdFRK2 shows especially high affinity to fructose, and its overexpression decreases fructose levels in the leaves of young plants. However, in the current study of mature plants, fruits of transgenic apple trees overexpressing MdFRK2 accumulated a higher level of fructose than wild-type (WT) fruits (at both young and mature stages). Transgenic apple trees with high mRNA MdFRK2 expression showed no significant differences in MdFRK2 protein abundance or FRK enzyme activity compared to WT in mature leaves, young fruits, and mature fruits. Immunoprecipitation-mass spectrometry analysis identified an skp1, cullin, F-box (SCF) E3 ubiquitin ligase, calcyclin-binding protein (CacyBP), that interacted with MdFRK2. RNA-sequencing analysis provided evidence for ubiquitin-mediated post-transcriptional regulation of MdFRK2 protein for the maintenance of fructose homeostasis in mature leaves and fruits. Further analyses suggested an MdCacyBP-MdFRK2 regulatory module, in which MdCacyBP interacts with and ubiquitinates MdFRK2 to facilitate its degradation by the 26S proteasome, thus decreasing the FRK enzyme activity to elevate fructose concentration in transgenic apple trees. This result uncovered an important mechanism underlying plant fructose homeostasis in different organs through regulating the MdFRK2 protein level via ubiquitination and degradation. Our study provides usable data for the future improvement of apple flavor and expands our understanding of the molecular mechanisms underlying plant fructose content and signaling regulation.
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Affiliation(s)
- Jing Su
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Tiantian Jiao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xi Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Lingcheng Zhu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Baiquan Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Mingjun Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Shaanxi Key Laboratory of Apple, Northwest A&F University, Yangling 712100, Shaanxi, China
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Terzaghi M, De Tullio MC. The perils of planning strategies to increase vitamin C content in plants: Beyond the hype. FRONTIERS IN PLANT SCIENCE 2022; 13:1096549. [PMID: 36600921 PMCID: PMC9806220 DOI: 10.3389/fpls.2022.1096549] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Ever since the identification of vitamin C (ascorbic acid, AsA) as an essential molecule that humans cannot synthesize on their own, finding adequate dietary sources of AsA became a priority in nutrition research. Plants are the main producers of AsA for humans and other non-synthesizing animals. It was immediately clear that some plant species have more AsA than others. Further studies evidenced that AsA content varies in different plant organs, in different developmental stages/environmental conditions and even within different cell compartments. With the progressive discovery of the genes of the main (Smirnoff-Wheeler) and alternative pathways coding for the enzymes involved in AsA biosynthesis in plants, the simple overexpression of those genes appeared a suitable strategy for boosting AsA content in any plant species or organ. Unfortunately, overexpression experiments mostly resulted in limited, if any, AsA increase, apparently due to a tight regulation of the biosynthetic machinery. Attempts to identify regulatory steps in the pathways that could be manipulated to obtain unlimited AsA production were also less successful than expected, confirming the difficulties in "unleashing" AsA synthesis. A different approach to increase AsA content has been the overexpression of genes coding for enzymes catalyzing the recycling of the oxidized forms of vitamin C, namely monodehydroascorbate and dehydroascorbate reductases. Such approach proved mostly effective in making the overexpressors apparently more resistant to some forms of environmental stress, but once more did not solve the issue of producing massive AsA amounts for human diet. However, it should also be considered that a hypothetical unlimited increase in AsA content is likely to interfere with plant development, which is in many ways regulated by AsA availability itself. The present review article aims at summarizing the many attempts made so far to improve AsA production/content in plants, evidencing the most promising ones, and at providing information about the possible unexpected consequences of a pure biotechnological approach not keeping into account the peculiar features of the AsA system in plants.
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Affiliation(s)
- Mattia Terzaghi
- Department of Biosciences, Biotechnologies and Environment, University of Bari "Aldo Moro", Bari, Italy
| | - Mario C. De Tullio
- Department of Earth and Geoenvironmental Sciences, University of Bari "Aldo Moro", Bari, Italy
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Lu D, Wu Y, Pan Q, Zhang Y, Qi Y, Bao W. Identification of key genes controlling L-ascorbic acid during Jujube ( Ziziphus jujuba Mill.) fruit development by integrating transcriptome and metabolome analysis. FRONTIERS IN PLANT SCIENCE 2022; 13:950103. [PMID: 35991405 PMCID: PMC9386341 DOI: 10.3389/fpls.2022.950103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Chinese jujube (Ziziphus jujuba) is a vital economic tree native to China. Jujube fruit with abundant L-Ascorbic Acid (AsA) is an ideal material for studying the mechanism of AsA biosynthesis and metabolism. However, the key transcription factors regulating AsA anabolism in jujube have not been reported. Here, we used jujube variety "Mazao" as the experimental material, conducted an integrative analysis of transcriptome and metabolome to investigate changes in differential genes and metabolites, and find the key genes regulating AsA during jujube fruit growth. The results showed that AsA was mostly synthesized in the young stage and enlargement stage, ZjMDHAR gene takes an important part in the AsA recycling. Three gene networks/modules were highly correlated with AsA, among them, three genes were identified as candidates controlling AsA, including ZjERF17 (LOC107404975), ZjbZIP9 (LOC107406320), and ZjGBF4 (LOC107421670). These results provide new directions and insights for further study on the regulation mechanism of AsA in jujube.
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Liu W, Chen Z, Jiang S, Wang Y, Fang H, Zhang Z, Chen X, Wang N. Research Progress on Genetic Basis of Fruit Quality Traits in Apple ( Malus × domestica). FRONTIERS IN PLANT SCIENCE 2022; 13:918202. [PMID: 35909724 PMCID: PMC9330611 DOI: 10.3389/fpls.2022.918202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/23/2022] [Indexed: 06/01/2023]
Abstract
Identifying the genetic variation characteristics of phenotypic traits is important for fruit tree breeding. During the long-term evolution of fruit trees, gene recombination and natural mutation have resulted in a high degree of heterozygosity. Apple (Malus × domestica Borkh.) shows strong ecological adaptability and is widely cultivated, and is among the most economically important fruit crops worldwide. However, the high level of heterozygosity and large genome of apple, in combination with its perennial life history and long juvenile phase, complicate investigation of the genetic basis of fruit quality traits. With continuing augmentation in the apple genomic resources available, in recent years important progress has been achieved in research on the genetic variation of fruit quality traits. This review focuses on summarizing recent genetic studies on apple fruit quality traits, including appearance, flavor, nutritional, ripening, and storage qualities. In addition, we discuss the mapping of quantitative trait loci, screening of molecular markers, and mining of major genes associated with fruit quality traits. The overall aim of this review is to provide valuable insights into the mechanisms of genetic variation and molecular breeding of important fruit quality traits in apple.
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Affiliation(s)
- Wenjun Liu
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Tai’an, China
| | - Zijing Chen
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Tai’an, China
| | - Shenghui Jiang
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Yicheng Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, China
| | - Hongcheng Fang
- State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River, College of Forestry, Shandong Agricultural University, Tai’an, China
| | - Zongying Zhang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Tai’an, China
| | - Xuesen Chen
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Tai’an, China
| | - Nan Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Tai’an, China
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21
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Maruta T. How does light facilitate vitamin C biosynthesis in leaves? Biosci Biotechnol Biochem 2022; 86:1173-1182. [PMID: 35746883 DOI: 10.1093/bbb/zbac096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 06/14/2022] [Indexed: 11/14/2022]
Abstract
Plants store ascorbate in high concentrations, particularly in their leaves. Ascorbate is an excellent antioxidant that acts as an indispensable photoprotectant. The D-mannose/L-galactose pathway is responsible for ascorbate biosynthesis in plants. Light facilitates ascorbate biosynthesis in a light intensity-dependent manner to enhance ascorbate pool size in leaves, and photosynthesis is required for this process. Light- and photosynthesis-dependent activation of the rate-limiting enzyme GDP-L-galactose phosphorylase (GGP) plays a critical role in ascorbate pool size regulation. In addition, the tight regulation of ascorbate biosynthesis by ascorbate itself has been proposed. Ascorbate represses GGP translation in a dose-dependent manner through the upstream open reading frame in the 5'-untranslated regions of the gene, which may compete with the light-dependent activation of ascorbate biosynthesis. This review focuses on ascorbate biosynthesis based on past and latest findings and critically discusses how light activates this process.
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Affiliation(s)
- Takanori Maruta
- Institute of Agricultural and Life Sciences, Academic Assembly, Shimane University, 1060 Nishikawatsu, Matsue, Shimane, Japan
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22
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Zheng X, Gong M, Zhang Q, Tan H, Li L, Tang Y, Li Z, Peng M, Deng W. Metabolism and Regulation of Ascorbic Acid in Fruits. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11121602. [PMID: 35736753 PMCID: PMC9228137 DOI: 10.3390/plants11121602] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/26/2022] [Accepted: 06/14/2022] [Indexed: 05/17/2023]
Abstract
Ascorbic acid, also known as vitamin C, is a vital antioxidant widely found in plants. Plant fruits are rich in ascorbic acid and are the primary source of human intake of ascorbic acid. Ascorbic acid affects fruit ripening and stress resistance and plays an essential regulatory role in fruit development and postharvest storage. The ascorbic acid metabolic pathway in plants has been extensively studied. Ascorbic acid accumulation in fruits can be effectively regulated by genetic engineering technology. The accumulation of ascorbic acid in fruits is regulated by transcription factors, protein interactions, phytohormones, and environmental factors, but the research on the regulatory mechanism is still relatively weak. This paper systematically reviews the regulation mechanism of ascorbic acid metabolism in fruits in recent decades. It provides a rich theoretical basis for an in-depth study of the critical role of ascorbic acid in fruits and the cultivation of fruits rich in ascorbic acid.
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Affiliation(s)
- Xianzhe Zheng
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 400044, China; (X.Z.); (M.G.); (Q.Z.); (Z.L.)
| | - Min Gong
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 400044, China; (X.Z.); (M.G.); (Q.Z.); (Z.L.)
| | - Qiongdan Zhang
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 400044, China; (X.Z.); (M.G.); (Q.Z.); (Z.L.)
| | - Huaqiang Tan
- Institute of Horticulture, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu 611130, China; (H.T.); (L.L.); (Y.T.)
| | - Liping Li
- Institute of Horticulture, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu 611130, China; (H.T.); (L.L.); (Y.T.)
| | - Youwan Tang
- Institute of Horticulture, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu 611130, China; (H.T.); (L.L.); (Y.T.)
| | - Zhengguo Li
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 400044, China; (X.Z.); (M.G.); (Q.Z.); (Z.L.)
| | - Mingchao Peng
- Institute of Horticulture, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu 611130, China; (H.T.); (L.L.); (Y.T.)
- Correspondence: (M.P.); (W.D.); Tel.: +86-19981296016 (M.P.); +86-18623127580 (W.D.)
| | - Wei Deng
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 400044, China; (X.Z.); (M.G.); (Q.Z.); (Z.L.)
- Correspondence: (M.P.); (W.D.); Tel.: +86-19981296016 (M.P.); +86-18623127580 (W.D.)
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