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Xu L, Lu Y, Jiang J, Chen Q, Xu Y, Mi Q, Xiang H, Lu L, Li X, Gao Q, Li L. The 14-3-3 protein nt GF14e interacts with CIPK2 and increases low potassium stress in tobacco. PLANT SIGNALING & BEHAVIOR 2024; 19:2359257. [PMID: 38825861 DOI: 10.1080/15592324.2024.2359257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 05/01/2024] [Indexed: 06/04/2024]
Abstract
Potassium (K+) plays a role in enzyme activation, membrane transport, and osmotic regulation processes. An increase in potassium content can significantly improve the elasticity and combustibility of tobacco and reduce the content of harmful substances. Here, we report that the expression analysis of Nt GF14e, a 14-3-3 gene, increased markedly after low-potassium treatment (LK). Then, chlorophyll content, POD activity and potassium content, were significantly increased in overexpression of Nt GF14e transgenic tobacco lines compared with those in the wild type plants. The net K+ efflux rates were severely lower in the transgenic plants than in the wild type under LK stress. Furthermore, transcriptome analysis identified 5708 upregulated genes and 2787 downregulated genes between Nt GF14e overexpressing transgenic tobacco plants. The expression levels of some potassium-related genes were increased, such as CBL-interacting protein kinase 2 (CIPK2), Nt CIPK23, Nt CIPK25, H+-ATPase isoform 2 a (AHA2a), Nt AHA4a, Stelar K+ outward rectifier 1(SKOR1), and high affinity K+ transporter 5 (HAK5). The result of yeast two-hybrid and luciferase complementation imaging experiments suggested Nt GF14e could interact with CIPK2. Overall, these findings indicate that NtGF14e plays a vital roles in improving tobacco LK tolerance and enhancing potassium nutrition signaling pathways in tobacco plants.
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Affiliation(s)
- Li Xu
- Yunnan Key Laboratory of Tobacco Chemistry, R&D Center of China Tobacco Yunnan Industrial Co. Ltd, Kunming, Yunnan, People's Republic of China
| | - Yifei Lu
- College of Agronomy, Sichuan Agriculture University, Chengdu, People's Republic of China
| | - Jiarui Jiang
- Yunnan Key Laboratory of Tobacco Chemistry, R&D Center of China Tobacco Yunnan Industrial Co. Ltd, Kunming, Yunnan, People's Republic of China
| | - Qian Chen
- College of Agronomy, Sichuan Agriculture University, Chengdu, People's Republic of China
| | - Yong Xu
- Yunnan Key Laboratory of Tobacco Chemistry, R&D Center of China Tobacco Yunnan Industrial Co. Ltd, Kunming, Yunnan, People's Republic of China
| | - Qili Mi
- Yunnan Key Laboratory of Tobacco Chemistry, R&D Center of China Tobacco Yunnan Industrial Co. Ltd, Kunming, Yunnan, People's Republic of China
| | - Haiying Xiang
- Yunnan Key Laboratory of Tobacco Chemistry, R&D Center of China Tobacco Yunnan Industrial Co. Ltd, Kunming, Yunnan, People's Republic of China
| | - Liming Lu
- College of Agronomy, Sichuan Agriculture University, Chengdu, People's Republic of China
| | - Xuemei Li
- Yunnan Key Laboratory of Tobacco Chemistry, R&D Center of China Tobacco Yunnan Industrial Co. Ltd, Kunming, Yunnan, People's Republic of China
| | - Qian Gao
- Yunnan Key Laboratory of Tobacco Chemistry, R&D Center of China Tobacco Yunnan Industrial Co. Ltd, Kunming, Yunnan, People's Republic of China
| | - Liqin Li
- College of Agronomy, Sichuan Agriculture University, Chengdu, People's Republic of China
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Zhu C, Zhao L, Zhao S, Niu X, Li L, Gao H, Liu J, Wang L, Zhang T, Cheng R, Shi Z, Zhang H, Wang G. Utilizing machine learning and bioinformatics analysis to identify drought-responsive genes affecting yield in foxtail millet. Int J Biol Macromol 2024; 277:134288. [PMID: 39079238 DOI: 10.1016/j.ijbiomac.2024.134288] [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: 06/10/2024] [Revised: 07/27/2024] [Accepted: 07/28/2024] [Indexed: 08/23/2024]
Abstract
Drought stress is a major constraint on crop development, potentially causing huge yield losses and threatening global food security. Improving Crop's stress tolerance is usually associated with a yield penalty. One way to balance yield and stress tolerance is modification specific gene by emerging precision genome editing technology. However, our knowledge of yield-related drought-tolerant genes is still limited. Foxtail millet (Setaria italica) has a remarkable tolerance to drought and is considered to be a model C4 crop that is easy to engineer. Here, we have identified 46 drought-responsive candidate genes by performing a machine learning-based transcriptome study on two drought-tolerant and two drought-sensitive foxtail millet cultivars. A total of 12 important drought-responsive genes were screened out by principal component analysis and confirmed experimentally by qPCR. Significantly, by investigating the haplotype of these genes based on 1844 germplasm resources, we found two genes (Seita.5G251300 and Seita.8G036300) exhibiting drought-tolerant haplotypes that possess an apparent advantage in 1000 grain weight and main panicle grain weight without penalty in grain weight per plant. These results demonstrate the potential of Seita.5G251300 and Seita.8G036300 for breeding drought-tolerant high-yielding foxtail millet. It provides important insights for the breeding of drought-tolerant high-yielding crop cultivars through genetic manipulation technology.
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Affiliation(s)
- Chunhui Zhu
- College of Physics, Hebei Normal University, Shijiazhuang 050024, China.
| | - Ling Zhao
- Institute of Millet Crops, Key Laboratory of Genetic Improvement and Utilization for Featured Coarse Cereals (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Afairs, National Foxtail Millet Improvement Center, Key Laboratory of Minor Cereal Crops of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China
| | - Shaoxing Zhao
- Institute of Millet Crops, Key Laboratory of Genetic Improvement and Utilization for Featured Coarse Cereals (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Afairs, National Foxtail Millet Improvement Center, Key Laboratory of Minor Cereal Crops of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China
| | - Xingfang Niu
- College of Physics, Hebei Normal University, Shijiazhuang 050024, China; College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Lin Li
- Institute of Millet Crops, Key Laboratory of Genetic Improvement and Utilization for Featured Coarse Cereals (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Afairs, National Foxtail Millet Improvement Center, Key Laboratory of Minor Cereal Crops of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China
| | - Hui Gao
- Hebei Key Laboratory of Crop Stress Biology, Department of Life Science and Technology, College of Marine Resources and Environment, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China
| | - Jiaxin Liu
- Institute of Millet Crops, Key Laboratory of Genetic Improvement and Utilization for Featured Coarse Cereals (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Afairs, National Foxtail Millet Improvement Center, Key Laboratory of Minor Cereal Crops of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China; Hebei Key Laboratory of Crop Stress Biology, Department of Life Science and Technology, College of Marine Resources and Environment, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China
| | - Litao Wang
- College of Physics, Hebei Normal University, Shijiazhuang 050024, China; College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Ting Zhang
- Institute of Millet Crops, Key Laboratory of Genetic Improvement and Utilization for Featured Coarse Cereals (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Afairs, National Foxtail Millet Improvement Center, Key Laboratory of Minor Cereal Crops of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China
| | - Ruhong Cheng
- Institute of Millet Crops, Key Laboratory of Genetic Improvement and Utilization for Featured Coarse Cereals (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Afairs, National Foxtail Millet Improvement Center, Key Laboratory of Minor Cereal Crops of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China
| | - Zhigang Shi
- Institute of Millet Crops, Key Laboratory of Genetic Improvement and Utilization for Featured Coarse Cereals (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Afairs, National Foxtail Millet Improvement Center, Key Laboratory of Minor Cereal Crops of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China
| | - Haoshan Zhang
- Institute of Millet Crops, Key Laboratory of Genetic Improvement and Utilization for Featured Coarse Cereals (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Afairs, National Foxtail Millet Improvement Center, Key Laboratory of Minor Cereal Crops of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China.
| | - Genping Wang
- Institute of Millet Crops, Key Laboratory of Genetic Improvement and Utilization for Featured Coarse Cereals (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Afairs, National Foxtail Millet Improvement Center, Key Laboratory of Minor Cereal Crops of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China.
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Shen X, Dai S, Chen M, Huang Y. Spermidine augments salt stress resilience in rice roots potentially by enhancing OsbZIP73's RNA binding capacity. BMC PLANT BIOLOGY 2024; 24:786. [PMID: 39160481 PMCID: PMC11334393 DOI: 10.1186/s12870-024-05492-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 08/06/2024] [Indexed: 08/21/2024]
Abstract
BACKGROUND Rice is a staple crop for over half of the global population, but soil salinization poses a significant threat to its production. As a type of polyamine, spermidine (Spd) has been shown to reduce stress-induced damage in plants, but its specific role and mechanism in protecting rice roots under salt stress require further investigation. RESULTS This study suggested spermidine (Spd) mitigates salt stress on rice root growth by enhancing antioxidant enzyme activity and reducing peroxide levels. Transcriptomic analysis showed that salt stress caused 333 genes to be upregulated and 1,765 to be downregulated. However, adding Spd during salt treatment significantly altered this pattern: 2,298 genes were upregulated and 844 were downregulated, which indicated Spd reverses some transcriptional changes caused by salt stress. KEGG pathway analysis suggested that Spd influenced key signaling pathways, including MAPK signaling, plant hormone signal transduction, and phenylalanine metabolism. Additionally, the bZIP transcription factor OsbZIP73 was upregulated after Spd treatment, which is confirmed by Western blot. Further insights into the interaction between OsbZIP73 and Spd were gained through fluorescence polarization experiments, showing that Spd enhances protein OsbZIP73's affinity for RNA. Functional enrichment analyses revealed that OsPYL1, OsSPARK1, and various SAUR family genes involved in Spd-affected pathways. The presence of G/A/C-box elements in these genes suggests they are potential targets for OsbZIP73. CONCLUSIONS Our findings suggest a strategy of using spermidine as a chemical alleviator for salt stress and provide insights into the regulatory function of OsbZIP73 in mitigating salt stress in rice roots.
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Affiliation(s)
- Xuefeng Shen
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524008, China
- National Saline-tolerant Rice Technology Innovation Center, South China, Zhanjiang, 524008, China
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, China
| | - Shuangfeng Dai
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524008, China
- National Saline-tolerant Rice Technology Innovation Center, South China, Zhanjiang, 524008, China
| | - Mingming Chen
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524008, China.
- National Saline-tolerant Rice Technology Innovation Center, South China, Zhanjiang, 524008, China.
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, China.
| | - Yongxiang Huang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524008, China
- National Saline-tolerant Rice Technology Innovation Center, South China, Zhanjiang, 524008, China
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Lang S, Dong B, Liu X, Gu Y, Kim K, Xie Q, Wang Z, Song X. The key pathways for drought tolerance in Cerasus humilis were unveiled through transcriptome analysis. PHYSIOLOGIA PLANTARUM 2024; 176:e14350. [PMID: 38818576 DOI: 10.1111/ppl.14350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 05/02/2024] [Indexed: 06/01/2024]
Abstract
Drought stress exerts a significant impact on the growth, development, and yield of fruit trees. Cerasus humilis is an endemic drought-resistant fruit tree in northern China. To elucidate the underlying mechanism of drought resistance in C. humilis, comprehensive physiological measurements and transcriptome analysis were conducted on the leaves of C. humilis subjected to 15- or 22-days of drought stress. We identified multiple GO terms and KEGG pathways associated with the drought stress response by performing GO and KEGG analysis on DEGs. Furthermore, through the prediction of transcription factors (TFs) and analysis of their expression levels, we observed differential expression patterns among most members of stress-responsive TF families as the duration of drought stress increased. WGCNA analysis was performed on the transcriptome to identify gene cluster modules that exhibited a strong correlation with the durations of drought. Subsequently, these modules underwent GO and KEGG enrichment analyses. The study revealed that the TF-mediated lignin biosynthesis pathway, along with the plant hormone signal transduction pathway, played a prominent role in responding to drought stress of C. humilis. Gene profiling analysis, qRT-PCR, and determination of phytohormone and lignin contents further supported this hypothesis. The hierarchical gene regulatory network was finally constructed based on DEGs from the aforementioned key enriched pathways to predict the gene regulatory mechanisms in response to stress for C. humilis. The findings from this study provide valuable insights into how C. humilis copes with drought stress while analyzing crucial gene pathways associated with its resistance from a TF perspective. This research is significant for the genetic breeding of economic forests.
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Affiliation(s)
- Shaoyu Lang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- College of Life Science, Northeast Forestry University, Harbin, China
| | - Buming Dong
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- College of Life Science, Northeast Forestry University, Harbin, China
| | - Xin Liu
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- College of Life Science, Northeast Forestry University, Harbin, China
| | - Yongmei Gu
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- College of Life Science, Northeast Forestry University, Harbin, China
| | - Kukhon Kim
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- College of Life Science, Northeast Forestry University, Harbin, China
- Branch of Biotechnology, State Academy of Sciences, Pyongyang, the Democratic People's, Republic of Korea
| | - Qingjun Xie
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Zhibo Wang
- College of Life Science, Northeast Forestry University, Harbin, China
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Xingshun Song
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- College of Life Science, Northeast Forestry University, Harbin, China
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Jiang W, He J, Babla M, Wu T, Tong T, Riaz A, Zeng F, Qin Y, Chen G, Deng F, Chen ZH. Molecular evolution and interaction of 14-3-3 proteins with H+-ATPases in plant abiotic stresses. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:689-707. [PMID: 37864845 DOI: 10.1093/jxb/erad414] [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: 05/18/2023] [Accepted: 10/20/2023] [Indexed: 10/23/2023]
Abstract
Environmental stresses severely affect plant growth and crop productivity. Regulated by 14-3-3 proteins (14-3-3s), H+-ATPases (AHAs) are important proton pumps that can induce diverse secondary transport via channels and co-transporters for the abiotic stress response of plants. Many studies demonstrated the roles of 14-3-3s and AHAs in coordinating the processes of plant growth, phytohormone signaling, and stress responses. However, the molecular evolution of 14-3-3s and AHAs has not been summarized in parallel with evolutionary insights across multiple plant species. Here, we comprehensively review the roles of 14-3-3s and AHAs in cell signaling to enhance plant responses to diverse environmental stresses. We analyzed the molecular evolution of key proteins and functional domains that are associated with 14-3-3s and AHAs in plant growth and hormone signaling. The results revealed evolution, duplication, contraction, and expansion of 14-3-3s and AHAs in green plants. We also discussed the stress-specific expression of those 14-3-3and AHA genes in a eudicotyledon (Arabidopsis thaliana), a monocotyledon (Hordeum vulgare), and a moss (Physcomitrium patens) under abiotic stresses. We propose that 14-3-3s and AHAs respond to abiotic stresses through many important targets and signaling components of phytohormones, which could be promising to improve plant tolerance to single or multiple environmental stresses.
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Affiliation(s)
- Wei Jiang
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
- School of Science, Western Sydney University, Penrith, NSW 2751, Australia
| | - Jing He
- School of Science, Western Sydney University, Penrith, NSW 2751, Australia
| | - Mohammad Babla
- School of Science, Western Sydney University, Penrith, NSW 2751, Australia
| | - Ting Wu
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2751, Australia
| | - Tao Tong
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
| | - Adeel Riaz
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
| | - Fanrong Zeng
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
| | - Yuan Qin
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
| | - Guang Chen
- Central Laboratory, Zhejiang Academy of Agricultural Science, Hangzhou 310021, China
| | - Fenglin Deng
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River, College of Agriculture, Yangtze University, Jingzhou, 434025, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Zhong-Hua Chen
- School of Science, Western Sydney University, Penrith, NSW 2751, Australia
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2751, Australia
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Zhang Y, He Y, Zhao H, Wang Y, Wu C, Zhao Y, Xue H, Zhu Q, Zhang J, Ou X. The 14-3-3 Protein BdGF14a Increases the Transcriptional Regulation Activity of BdbZIP62 to Confer Drought and Salt Resistance in Tobacco. PLANTS (BASEL, SWITZERLAND) 2024; 13:245. [PMID: 38256798 PMCID: PMC10819667 DOI: 10.3390/plants13020245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/27/2023] [Accepted: 01/12/2024] [Indexed: 01/24/2024]
Abstract
BdGF14a, a 14-3-3 gene from Brachypodium distachyon, induced by salt, H2O2, and abscisic acid (ABA), improved tolerance to drought and salt in tobacco, with a higher survival rate and longer roots under these stresses. Additionally, physiological index analyses showed that the heterologous expression of BdGF14a induced higher expression levels of antioxidant enzymes and their activities, leading to lighter DAB and NBT staining, denoting decreased H2O2 content. Additionally, the lower MDA content and ion leakage indicated enhanced cell membrane stability. Moreover, exogenous ABA resulted in shorter roots and a lower stomatal aperture in BdGF14a transgenic plants. BdGF14a interacted with NtABF2 and regulated the expression of stress-related genes. However, adding an ABA biosynthesis inhibitor suppressed most of these changes. Furthermore, similar salt and drought resistance phenotypes and physiological indicators were characterized in tobacco plants expressing BdbZIP62, an ABRE/ABF that interacts with BdGF14a. And Y1H and LUC assays showed that BdGF14a could enhance the transcription regulation activity of NtABF2 and BdbZIP62, targeting NtNECD1 by binding to the ABRE cis-element. Thus, BdGF14a confers resistance to drought and salinity through interaction with BdbZIP62 and enhances its transcriptional regulation activity via an ABA-mediated signaling pathway. Therefore, this work offers novel target genes for breeding salt- and drought-tolerant plants.
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Affiliation(s)
- Yang Zhang
- Henan Institute of Science and Technology, School of Agriculture, Xinxiang 453003, China; (Y.Z.); (H.X.); (Q.Z.)
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China; (Y.H.); (H.Z.); (Y.W.); (C.W.)
| | - Yuan He
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China; (Y.H.); (H.Z.); (Y.W.); (C.W.)
| | - Hongyan Zhao
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China; (Y.H.); (H.Z.); (Y.W.); (C.W.)
| | - Yan Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China; (Y.H.); (H.Z.); (Y.W.); (C.W.)
| | - Chunlai Wu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China; (Y.H.); (H.Z.); (Y.W.); (C.W.)
| | - Yuanzeng Zhao
- Henan Institute of Science and Technology, School of Life Sciences, Xinxiang 453003, China;
| | - Hongna Xue
- Henan Institute of Science and Technology, School of Agriculture, Xinxiang 453003, China; (Y.Z.); (H.X.); (Q.Z.)
| | - Qidi Zhu
- Henan Institute of Science and Technology, School of Agriculture, Xinxiang 453003, China; (Y.Z.); (H.X.); (Q.Z.)
| | - Jinlong Zhang
- Henan Institute of Science and Technology, School of Agriculture, Xinxiang 453003, China; (Y.Z.); (H.X.); (Q.Z.)
| | - Xingqi Ou
- Henan Institute of Science and Technology, School of Agriculture, Xinxiang 453003, China; (Y.Z.); (H.X.); (Q.Z.)
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Xiao Z, Wang J, Jiang N, Fan C, Xiang X, Liu W. An LcMYB111-LcHY5 Module Differentially Activates an LcFLS Promoter in Different Litchi Cultivars. Int J Mol Sci 2023; 24:16817. [PMID: 38069137 PMCID: PMC10706726 DOI: 10.3390/ijms242316817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 12/18/2023] Open
Abstract
Flavonol synthase (FLS) is the crucial enzyme of the flavonol biosynthetic pathways, and its expression is tightly regulated in plants. In our previous study, two alleles of LcFLS,LcFLS-A and LcFLS-B, have been identified in litchi, with extremely early-maturing (EEM) cultivars only harboring LcFLS-A, while middle-to-late-maturing (MLM) cultivars only harbor LcFLS-B. Here, we overexpressed both LcFLS alleles in tobacco, and transgenic tobacco produced lighter-pink flowers and showed increased flavonol levels while it decreased anthocyanin levels compared to WT. Two allelic promoters of LcFLS were identified, with EEM cultivars only harboring proLcFLS-A, while MLM cultivars only harbor proLcFLS-B. One positive and three negative R2R3-MYB transcription regulators of LcFLS expression were identified, among which only positive regulator LcMYB111 showed a consistent expression pattern with LcFLS, which both have higher expression in EEM than that of MLM cultivars. LcMYB111 were further confirmed to specifically activate proLcFLS-A with MYB-binding element (MBE) while being unable to activate proLcFLS-B with mutated MBE (MBEm). LcHY5 were also identified and can interact with LcMYB111 to promote LcFLS expression. Our study elucidates the function of LcFLS and its differential regulation in different litchi cultivars for the first time.
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Affiliation(s)
| | | | | | | | | | - Wei Liu
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China; (Z.X.); (J.W.); (N.J.); (C.F.); (X.X.)
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