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An JP, Zhao L, Cao YP, Ai D, Li MY, You CX, Han Y. The SMXL8-AGL9 module mediates crosstalk between strigolactone and gibberellin to regulate strigolactone-induced anthocyanin biosynthesis in apple. THE PLANT CELL 2024; 36:4404-4425. [PMID: 38917246 PMCID: PMC11448916 DOI: 10.1093/plcell/koae191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 05/31/2024] [Accepted: 06/15/2024] [Indexed: 06/27/2024]
Abstract
Although the strigolactone (SL) signaling pathway and SL-mediated anthocyanin biosynthesis have been reported, the molecular association between SL signaling and anthocyanin biosynthesis remains unclear. In this study, we identified the SL signal transduction pathway associated with anthocyanin biosynthesis and the crosstalk between gibberellin (GA) and SL signaling in apple (Malus × domestica). ELONGATED HYPOCOTYL5 (HY5) acts as a key node integrating SL signaling and anthocyanin biosynthesis, and the SL-response factor AGAMOUS-LIKE MADS-BOX9 (AGL9) promotes anthocyanin biosynthesis by activating HY5 transcription. The SL signaling repressor SUPPRESSOR OF MAX2 1-LIKE8 (SMXL8) interacts with AGL9 to form a complex that inhibits anthocyanin biosynthesis by downregulating HY5 expression. Moreover, the E3 ubiquitin ligase PROTEOLYSIS1 (PRT1) mediates the ubiquitination-mediated degradation of SMXL8, which is a key part of the SL signal transduction pathway associated with anthocyanin biosynthesis. In addition, the GA signaling repressor REPRESSOR-of-ga1-3-LIKE2a (RGL2a) mediates the crosstalk between GA and SL by disrupting the SMXL8-AGL9 interaction that represses HY5 transcription. Taken together, our study reveals the regulatory mechanism of SL-mediated anthocyanin biosynthesis and uncovers the role of SL-GA crosstalk in regulating anthocyanin biosynthesis in apple.
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Affiliation(s)
- Jian-Ping An
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan 430074, China
- Apple technology innovation center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018 Shandong, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China
| | - Lei Zhao
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan 430074, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China
| | - Yun-Peng Cao
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan 430074, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China
| | - Di Ai
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan 430074, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China
| | - Miao-Yi Li
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan 430074, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China
| | - Chun-Xiang You
- Apple technology innovation center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018 Shandong, China
| | - Yuepeng Han
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan 430074, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China
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Bulgakov VP, Fialko AV, Yugay YA. Involvement of epigenetic factors in flavonoid accumulation during plant cold adaptation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 216:109096. [PMID: 39250844 DOI: 10.1016/j.plaphy.2024.109096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 08/26/2024] [Accepted: 09/03/2024] [Indexed: 09/11/2024]
Abstract
Plant responses to cold stress include either induction of flavonoid biosynthesis as part of defense responses or initially elevated levels of these substances to mitigate sudden temperature fluctuations. The role of chromatin modifying factors and, in general, epigenetic variability in these processes is not entirely clear. In this work, we review the literature to establish the relationship between flavonoids, cold and chromatin modifications. We demonstrate the relationship between cold acclimation and flavonoid accumulation, and then describe the cold adaptation signaling pathways and their relationship with chromatin modifying factors. Particular attention was paid to the cold signaling module OST1-HOS1-ICE1 and the novel function of the E3 ubiquitin protein ligase HOS1 (a protein involved in chromatin modification during cold stress) in flavonoid regulation.
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Affiliation(s)
- Victor P Bulgakov
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, 159 Stoletija Str., Vladivostok, 690022, Russia; Institute of Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, 5 Radio Str., Vladivostok, 690041, Russia.
| | - Alexandra V Fialko
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, 159 Stoletija Str., Vladivostok, 690022, Russia; Institute of Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, 5 Radio Str., Vladivostok, 690041, Russia
| | - Yulia A Yugay
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, 159 Stoletija Str., Vladivostok, 690022, Russia
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3
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Yuan Y, Fan Y, Huang L, Lu H, Tan B, Ramirez C, Xia C, Niu X, Chen S, Gao M, Zhang C, Liu Y, Xiao F. The SINA1-BSD1 Module Regulates Vegetative Growth Involving Gibberellin Biosynthesis in Tomato. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2400995. [PMID: 39190572 DOI: 10.1002/advs.202400995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 07/10/2024] [Indexed: 08/29/2024]
Abstract
In plants, vegetative growth is controlled by synergistic and/or antagonistic effects of many regulatory factors. Here, the authors demonstrate that the ubiquitin ligase seven in absentia1 (SINA1) mammalian BTF2-like transcription factors, Drosophila synapse-associated proteins, and yeast DOS2-like proteins (BSD1) function as a regulatory module to control vegetative growth in tomato via regulation of the production of plant growth hormone gibberellin (GA). SINA1 negatively regulates the protein level of BSD1 through ubiquitin-proteasome-mediated degradation, and the transgenic tomato over-expressing SINA1 (SINA1-OX) resembles the dwarfism phenotype of the BSD1-knockout (BSD1-KO) tomato plant. BSD1 directly activates expression of the BSD1-regulated gene 1 (BRG1) via binding to a novel core BBS (standing for BSD1 binding site) binding motif in the BRG1 promoter. Knockout of BRG1 (BRG1-KO) in tomato also results in a dwarfism phenotype, suggesting BRG1 plays a positive role in vegetative growth as BSD1 does. Significantly, GA contents are attenuated in transgenic SINA1-OX, BSD1-KO, and BRG1-KO plants exhibiting dwarfism phenotype and exogenous application of bioactive GA3 restores their vegetative growth. Moreover, BRG1 is required for the expression of multiple GA biosynthesis genes and BSD1 activates three GA biosynthesis genes promoting GA production. Thus, this study suggests that the SINA1-BSD1 module controls vegetative growth via direct and indirect regulation of GA biosynthesis in tomato.
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Affiliation(s)
- Yulin Yuan
- Department of Plant Sciences, University of Idaho, Moscow, ID, 83844, USA
| | - Youhong Fan
- Department of Plant Sciences, University of Idaho, Moscow, ID, 83844, USA
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China
| | - Li Huang
- Department of Plant Sciences, University of Idaho, Moscow, ID, 83844, USA
| | - Han Lu
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science and Institute of Eco‑Chongming, School of Life Sciences, Fudan University, Shanghai, 200433, China
| | - Bowen Tan
- Department of Biology, University of Mississippi, Oxford, MS, 38677, USA
| | - Chloe Ramirez
- Department of Plant Sciences, University of Idaho, Moscow, ID, 83844, USA
| | - Chao Xia
- Maize Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiangli Niu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China
| | - Sixue Chen
- Department of Biology, University of Mississippi, Oxford, MS, 38677, USA
| | - Mingjun Gao
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science and Institute of Eco‑Chongming, School of Life Sciences, Fudan University, Shanghai, 200433, China
| | - Cankui Zhang
- Department of Agronomy, Purdue Center for Plant Biology, Purdue University, 915 Mitch Daniels Blvd, West Lafayette, IN, 47907, USA
| | - Yongsheng Liu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China
- School of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, China
- Ministry of Education Key Laboratory for Bio-resource and Eco-environment, College of Life Science, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Fangming Xiao
- Department of Plant Sciences, University of Idaho, Moscow, ID, 83844, USA
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Li HL, Xu RR, Guo XL, Liu YJ, You CX, Han Y, An JP. The MdNAC72-MdABI5 module acts as an interface integrating jasmonic acid and gibberellin signals and undergoes ubiquitination-dependent degradation regulated by MdSINA2 in apple. THE NEW PHYTOLOGIST 2024; 243:997-1016. [PMID: 38849319 DOI: 10.1111/nph.19888] [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: 04/29/2024] [Accepted: 05/20/2024] [Indexed: 06/09/2024]
Abstract
Jasmonic acid (JA) and gibberellin (GA) coordinately regulate plant developmental programs and environmental cue responses. However, the fine regulatory network of the cross-interaction between JA and GA remains largely elusive. In this study, we demonstrate that MdNAC72 together with MdABI5 positively regulates anthocyanin biosynthesis through an exquisite MdNAC72-MdABI5-MdbHLH3 transcriptional cascade in apple. MdNAC72 interacts with MdABI5 to promote the transcriptional activation of MdABI5 on its target gene MdbHLH3 and directly activates the transcription of MdABI5. The MdNAC72-MdABI5 module regulates the integration of JA and GA signals in anthocyanin biosynthesis by combining with JA repressor MdJAZ2 and GA repressor MdRGL2a. MdJAZ2 disrupts the MdNAC72-MdABI5 interaction and attenuates the transcriptional activation of MdABI5 by MdNAC72. MdRGL2a sequesters MdJAZ2 from the MdJAZ2-MdNAC72 protein complex, leading to the release of MdNAC72. The E3 ubiquitin ligase MdSINA2 is responsive to JA and GA signals and promotes ubiquitination-dependent degradation of MdNAC72. The MdNAC72-MdABI5 interface fine-regulates the integration of JA and GA signals at the transcriptional and posttranslational levels by combining MdJAZ2, MdRGL2a, and MdSINA2. In summary, our findings elucidate the fine regulatory network connecting JA and GA signals with MdNAC72-MdABI5 as the core in apple.
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Affiliation(s)
- Hong-Liang Li
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan, 430074, China
- Apple technology innovation center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, Shandong, China
| | - Rui-Rui Xu
- College of Biology and Oceanography, Weifang University, Weifang, 261061, Shandong, China
| | - Xin-Long Guo
- Apple technology innovation center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, Shandong, China
| | - Ya-Jing Liu
- School of Horticulture, Anhui Agricultural University, He-Fei, 230036, Anhui, China
| | - Chun-Xiang You
- Apple technology innovation center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, Shandong, China
| | - Yuepeng Han
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China
| | - Jian-Ping An
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan, 430074, China
- Apple technology innovation center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, Shandong, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China
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5
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Luo H, Guan Y, Zhang Z, Zhang Z, Zhang Z, Li H. FveDREB1B improves cold tolerance of woodland strawberry by positively regulating FveSCL23 and FveCHS. PLANT, CELL & ENVIRONMENT 2024. [PMID: 39051467 DOI: 10.1111/pce.15052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 06/21/2024] [Accepted: 07/10/2024] [Indexed: 07/27/2024]
Abstract
Cold stress has seriously inhibited the growth and development of strawberry during production. CBF/DREB1 is a key central transcription factor regulating plant cold tolerance, but its regulatory mechanisms are varied in different plants. Especially in strawberry, the molecular mechanism of CBF/DREB1 regulating cold tolerance is still unclear. In this study, we found that FveDREB1B was most significantly induced by cold stress in CBF/DREB1 family of diploid woodland strawberry. FveDREB1B was localized to the nucleus, and DREB1B sequences were highly conserved in diploid and octoploid strawberry, and even similar in Rosaceae. And FveDREB1B overexpressed strawberry plants showed delayed flowering and increased cold tolerance, while FveDREB1B silenced plants showed early flowering and decreased cold tolerance. Under cold stress, FveDREB1B activated FveSCL23 expression by directly binding to its promoter. Meanwhile, FveDREB1B and FveSCL23 interacted with FveDELLA, respectively. In addition, we also found that FveDREB1B promoted anthocyanin accumulation in strawberry leaves by directly activating FveCHS expression after cold treatment and recovery to 25°C. DREB1B genes were also detected to be highly expressed in cold-tolerant strawberry resources 'Fragaria mandschurica' and 'Fragaria nipponica'. In conclusion, our study reveals the molecular mechanism of FveDREB1B-FveSCL23-FveDELLA module and FveDREB1B-FveCHS module to enhance the cold tolerance of woodland strawberry. It provides a new idea for improving the cold tolerance of cultivated strawberry and evaluating the cold tolerance of strawberry germplasm resources.
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Affiliation(s)
- He Luo
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Yuhan Guan
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Zhuo Zhang
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Zihui Zhang
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Zhihong Zhang
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - He Li
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, China
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Ai D, Zhao L, You CX, Han Y, An JP. Apple SINA11-JAZ2 module is involved in jasmonate signaling response. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024; 66:1270-1273. [PMID: 38888226 DOI: 10.1111/jipb.13713] [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: 02/05/2024] [Accepted: 05/06/2024] [Indexed: 06/20/2024]
Abstract
The E3 ubiquitin ligase MdSINA11 targets the jasmonate ZIM domain protein MdJAZ2 for ubiquitination and degradation through the 26S proteasome pathway, thereby initiating jasmonate signaling and jasmonic acid-triggered anthocyanin biosynthesis in apple.
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Affiliation(s)
- Di Ai
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lei Zhao
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chun-Xiang You
- Apple Technology Innovation Center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, China
| | - Yuepeng Han
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jian-Ping An
- State Key Laboratory of Plant Diversity and Specialty Crops, CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden of Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Apple Technology Innovation Center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, China
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Yan R, Zhang T, Wang Y, Wang W, Sharif R, Liu J, Dong Q, Luan H, Zhang X, Li H, Guo S, Qi G, Jia P. The apple MdGA2ox7 modulates the balance between growth and stress tolerance in an anthocyanin-dependent manner. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 212:108707. [PMID: 38763002 DOI: 10.1016/j.plaphy.2024.108707] [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: 01/11/2024] [Revised: 04/19/2024] [Accepted: 05/05/2024] [Indexed: 05/21/2024]
Abstract
Apple (Malus domestica Borkh.) is a widely cultivated fruit crop worldwide but often suffers from abiotic stresses such as salt and cold. Gibberellic acid (GA) plays a pivotal in controlling plant development, environmental adaptability, and secondary metabolism. The GA2-oxidase (GA2ox) is responsible for the deactivation of bioactive GA. In this study, seventeen GA2-oxidase genes were identified in the apple genome, and these members could be clustered into four clades based on phylogenetic relationships and conserved domain structures. MdGA2ox7 exhibited robust expression across various tissues, responded to cold and salt treatments, and was triggered in apple fruit peels via light-induced anthocyanin accumulation. Subcellular localization prediction and experiments confirmed that MdGA2ox7 was located in the cytoplasm. Overexpression of MdGA2ox7 in Arabidopsis caused a lower level of active GA and led to GA-deficient phenotypes, such as dwarfism and delayed flowering. MdGA2ox7 alleviated cold and salt stress damage in both Arabidopsis and apple in concert with melatonin (MT). Additionally, MdGA2ox7 enhanced anthocyanin biosynthesis in apple calli and activated genes involved in anthocyanin synthesis. These findings provide new insights into the functions of apple GA2ox in regulating development, stress tolerance, and secondary metabolism.
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Affiliation(s)
- Rui Yan
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China
| | - Tianle Zhang
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China
| | - Yuan Wang
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, 071000, China
| | - Wenxiu Wang
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China
| | - Rahat Sharif
- Department of Horticulture, School of Horticulture and Landscape, Yangzhou University, Yangzhou, 225009, China
| | - Jiale Liu
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China
| | - Qinglong Dong
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China
| | - Haoan Luan
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China
| | - Xuemei Zhang
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China
| | - Han Li
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China
| | - Suping Guo
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China
| | - Guohui Qi
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China.
| | - Peng Jia
- College of Forestry, Hebei Agricultural University, Baoding, 071000, China.
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An JP, Xu RR, Wang XN, Zhang XW, You CX, Han Y. MdbHLH162 connects the gibberellin and jasmonic acid signals to regulate anthocyanin biosynthesis in apple. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024; 66:265-284. [PMID: 38284786 DOI: 10.1111/jipb.13608] [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: 09/14/2023] [Revised: 12/09/2023] [Accepted: 01/03/2024] [Indexed: 01/30/2024]
Abstract
Anthocyanins are secondary metabolites induced by environmental stimuli and developmental signals. The positive regulators of anthocyanin biosynthesis have been reported, whereas the anthocyanin repressors have been neglected. Although the signal transduction pathways of gibberellin (GA) and jasmonic acid (JA) and their regulation of anthocyanin biosynthesis have been investigated, the cross-talk between GA and JA and the antagonistic mechanism of regulating anthocyanin biosynthesis remain to be investigated. In this study, we identified the anthocyanin repressor MdbHLH162 in apple and revealed its molecular mechanism of regulating anthocyanin biosynthesis by integrating the GA and JA signals. MdbHLH162 exerted passive repression by interacting with MdbHLH3 and MdbHLH33, which are two recognized positive regulators of anthocyanin biosynthesis. MdbHLH162 negatively regulated anthocyanin biosynthesis by disrupting the formation of the anthocyanin-activated MdMYB1-MdbHLH3/33 complexes and weakening transcriptional activation of the anthocyanin biosynthetic genes MdDFR and MdUF3GT by MdbHLH3 and MdbHLH33. The GA repressor MdRGL2a antagonized MdbHLH162-mediated inhibition of anthocyanins by sequestering MdbHLH162 from the MdbHLH162-MdbHLH3/33 complex. The JA repressors MdJAZ1 and MdJAZ2 interfered with the antagonistic regulation of MdbHLH162 by MdRGL2a by titrating the formation of the MdRGL2a-MdbHLH162 complex. Our findings reveal that MdbHLH162 integrates the GA and JA signals to negatively regulate anthocyanin biosynthesis. This study provides new information for discovering more anthocyanin biosynthesis repressors and explores the cross-talk between hormone signals.
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Affiliation(s)
- Jian-Ping An
- Apple technology innovation center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, China
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Hubei Hongshan Laboratory, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, 430074, China
| | - Rui-Rui Xu
- College of Biology and Oceanography, Weifang University, Weifang, 261061, China
| | - Xiao-Na Wang
- Apple technology innovation center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, China
| | - Xiao-Wei Zhang
- Apple technology innovation center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, China
| | - Chun-Xiang You
- Apple technology innovation center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, China
| | - Yuepeng Han
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Hubei Hongshan Laboratory, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, 430074, China
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9
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Li HL, Liu ZY, Wang XN, Han Y, You CX, An JP. E3 ubiquitin ligases SINA4 and SINA11 regulate anthocyanin biosynthesis by targeting the IAA29-ARF5-1-ERF3 module in apple. PLANT, CELL & ENVIRONMENT 2023; 46:3902-3918. [PMID: 37658649 DOI: 10.1111/pce.14709] [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: 04/08/2023] [Revised: 07/13/2023] [Accepted: 08/22/2023] [Indexed: 09/03/2023]
Abstract
Auxin/indole-3-acetic acid (AUX/IAA) and auxin response factor (ARF) proteins are important components of the auxin signalling pathway, but their ubiquitination modification and the mechanism of auxin-mediated anthocyanin biosynthesis remain elusive. Here, the ARF MdARF5-1 was identified as a negative regulator of anthocyanin biosynthesis in apple, and it integrates auxin and ethylene signals by inhibiting the expression of the ethylene response factor MdERF3. The auxin repressor MdIAA29 decreased the inhibitory effect of MdARF5-1 on anthocyanin biosynthesis by attenuating the transcriptional inhibition of MdERF3 by MdARF5-1. In addition, the E3 ubiquitin ligases MdSINA4 and MdSINA11 played negative and positive regulatory roles in anthocyanin biosynthesis by targeting MdIAA29 and MdARF5-1 for ubiquitination degradation, respectively. MdSINA4 destabilized MdSINA11 to regulate anthocyanin accumulation in response to auxin signalling. In sum, our data revealed the crosstalk between auxin and ethylene signals mediated by the IAA29-ARF5-1-ERF3 module and provide new insights into the ubiquitination modification of the auxin signalling pathway.
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Affiliation(s)
- Hong-Liang Li
- Apple Technology Innovation Center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
| | - Zhi-Ying Liu
- Apple Technology Innovation Center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
| | - Xiao-Na Wang
- Apple Technology Innovation Center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
| | - Yuepeng Han
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Hubei Hongshan Laboratory, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, China
| | - Chun-Xiang You
- Apple Technology Innovation Center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
| | - Jian-Ping An
- Apple Technology Innovation Center of Shandong Province, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Hubei Hongshan Laboratory, The Innovative Academy of Seed Design of Chinese Academy of Sciences, Wuhan, China
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