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Chen S, Qiu Y, Lin Y, Zou S, Wang H, Zhao H, Shen S, Wang Q, Wang Q, Du H, Li J, Qu C. Genome-Wide Identification of B-Box Family Genes and Their Potential Roles in Seed Development under Shading Conditions in Rapeseed. PLANTS (BASEL, SWITZERLAND) 2024; 13:2226. [PMID: 39204662 PMCID: PMC11359083 DOI: 10.3390/plants13162226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Revised: 08/05/2024] [Accepted: 08/08/2024] [Indexed: 09/04/2024]
Abstract
B-box (BBX) proteins, a subfamily of zinc-finger transcription factors, are involved in various environmental signaling pathways. In this study, we conducted a comprehensive analysis of BBX family members in Brassica crops. The 482 BBX proteins were divided into five groups based on gene structure, conserved domains, and phylogenetic analysis. An analysis of nonsynonymous substitutions and (Ka)/synonymous substitutions (Ks) revealed that most BBX genes have undergone purifying selection during evolution. An analysis of transcriptome data from rapeseed (Brassica napus) organs suggested that BnaBBX3d might be involved in the development of floral tissue-specific RNA-seq expression. We identified numerous light-responsive elements in the promoter regions of BnaBBX genes, which were suggestive of participation in light signaling pathways. Transcriptomic analysis under shade treatment revealed 77 BnaBBX genes with significant changes in expression before and after shading treatment. Of these, BnaBBX22e showed distinct expression patterns in yellow- vs. black-seeded materials in response to shading. UPLC-HESI-MS/MS analysis revealed that shading influences the accumulation of 54 metabolites, with light response BnaBBX22f expression correlating with the accumulation of the flavonoid metabolites M46 and M51. Additionally, BnaBBX22e and BnaBBX22f interact with BnaA10.HY5. These results suggest that BnaBBXs might function in light-induced pigment accumulation. Overall, our findings elucidate the characteristics of BBX proteins in six Brassica species and reveal a possible connection between light and seed coat color, laying the foundation for further exploring the roles of BnaBBX genes in seed development.
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Affiliation(s)
- Si Chen
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Yushan Qiu
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Yannong Lin
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Songling Zou
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Hailing Wang
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Huiyan Zhao
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Shulin Shen
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Qinghui Wang
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Qiqi Wang
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Hai Du
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Jiana Li
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Cunmin Qu
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China; (S.C.); (Y.Q.); (Y.L.); (S.Z.); (H.W.); (H.Z.); (S.S.); (Q.W.); (Q.W.); (H.D.)
- Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
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Ma H, Pei J, Zhuo J, Tang Q, Hou D, Lin X. The CONSTANS-LIKE gene PeCOL13 regulates flowering through intron-retained alternative splicing in Phyllostachys edulis. Int J Biol Macromol 2024; 274:133393. [PMID: 38917922 DOI: 10.1016/j.ijbiomac.2024.133393] [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: 05/07/2024] [Revised: 06/14/2024] [Accepted: 06/22/2024] [Indexed: 06/27/2024]
Abstract
Woody bamboo exhibits a unique flowering characteristic with a lengthy flowering cycle, often followed by death. In many plant species, alternative splicing (AS) is a common phenomenon involved in controlling flowering. In this study, a PeCOL13 gene in moso bamboo (Phyllostachys edulis) was characterized. It produced two isoforms: PeCOL13α and PeCOL13β, due to an intron-retained AS. The PeCOL13α expressed in the vegetative phase and the reproductive phase, but the PeCOL13β didn't express during the vegetative phase and showed only a weak expression from F1 to F3 during the reproductive phase. Overexpression of PeCOL13α in rice (Oryza sativa) resulted in a delayed heading time through inhibiting the expressions of Hd3a, OsFTL1, and Ehd1 and activating the expressions of Ghd7 and RCN1. However, the PeCOL13β-overexpressed rice didn't show any significant differences in flowering compared with wild-type (WT), and the expressions of downstream flowering genes had no notable changes. Further analysis revealed that both PeCOL13α and PeCOL13β can bind to the PeFT promoter. Meanwhile, PeCOL13α can inhibit the transcription of PeFT, but PeCOL13β showed no effect. When PeCOL13α and PeCOL13β coexist, the inhibitory effect of PeCOL13α on PeFT transcription was weakened by PeCOL13β. This study provides new insights into the mechanism of bamboo flowering research.
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Affiliation(s)
- Hongjia Ma
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin' an 311300, China; Bamboo Industry Institute, Zhejiang A&F University, Lin' an 311300, China
| | - Jialong Pei
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin' an 311300, China; Bamboo Industry Institute, Zhejiang A&F University, Lin' an 311300, China
| | - Juan Zhuo
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin' an 311300, China; Bamboo Industry Institute, Zhejiang A&F University, Lin' an 311300, China
| | - Qingyun Tang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin' an 311300, China; Bamboo Industry Institute, Zhejiang A&F University, Lin' an 311300, China
| | - Dan Hou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin' an 311300, China; Bamboo Industry Institute, Zhejiang A&F University, Lin' an 311300, China.
| | - Xinchun Lin
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin' an 311300, China; Bamboo Industry Institute, Zhejiang A&F University, Lin' an 311300, China.
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Ji MG, Khakurel D, Hwang JW, Nguyen CC, Nam B, Shin GI, Jeong SY, Ahn G, Cha JY, Lee SH, Park HJ, Kim MG, Yun DJ, Rubio V, Kim WY. The E3 ubiquitin ligase COP1 regulates salt tolerance via GIGANTEA degradation in roots. PLANT, CELL & ENVIRONMENT 2024; 47:3241-3252. [PMID: 38741272 DOI: 10.1111/pce.14946] [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] [Revised: 04/17/2024] [Accepted: 04/28/2024] [Indexed: 05/16/2024]
Abstract
Excess soil salinity significantly impairs plant growth and development. Our previous reports demonstrated that the core circadian clock oscillator GIGANTEA (GI) negatively regulates salt stress tolerance by sequestering the SALT OVERLY SENSITIVE (SOS) 2 kinase, an essential component of the SOS pathway. Salt stress induces calcium-dependent cytoplasmic GI degradation, resulting in activation of the SOS pathway; however, the precise molecular mechanism governing GI degradation during salt stress remains enigmatic. Here, we demonstrate that salt-induced calcium signals promote the cytoplasmic partitioning of CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1), leading to the 26S proteasome-dependent degradation of GI exclusively in the roots. Salt stress-induced calcium signals accelerate the cytoplasmic localization of COP1 in the root cells, which targets GI for 26S proteasomal degradation. Align with this, the interaction between COP1 and GI is only observed in the roots, not the shoots, under salt-stress conditions. Notably, the gi-201 cop1-4 double mutant shows an enhanced tolerance to salt stress similar to gi-201, indicating that GI is epistatic to COP1 under salt-stress conditions. Taken together, our study provides critical insights into the molecular mechanisms governing the COP1-mediated proteasomal degradation of GI for salt stress tolerance, raising new possibilities for developing salt-tolerant crops.
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Affiliation(s)
- Myung Geun Ji
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Dhruba Khakurel
- Department of Biology, Graduate School, Gyeongsang National University, Jinju, Republic of Korea
| | - Ji-Won Hwang
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
| | - Cam Chau Nguyen
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
| | - Byoungwoo Nam
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
| | - Gyeong-Im Shin
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Song Yi Jeong
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Gyeongik Ahn
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Sung-Ho Lee
- Department of Biology, Graduate School, Gyeongsang National University, Jinju, Republic of Korea
- Division of Life Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Hee Jin Park
- Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju, Republic of Korea
| | - Min Gab Kim
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
- Research Institute of Pharmaceutical Science, College of Pharmacy, Gyeongsang National University, Jinju, Korea
| | - Dae-Jin Yun
- Institute of Glocal Disease Control, Konkuk University, Seoul, Republic of Korea
| | - Vicente Rubio
- Plant Molecular Genetics Department, Centro Nacionalde Biotecnología-Consejo Superior de Investigaciones Cientificas, Campus de la Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain
| | - Woe-Yeon Kim
- Division of Applied Life Science (BK21 Four), Plant Biological Rhythm Research Center, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
- Research Institute of Life Science, Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
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Zhang N, Wei CQ, Xu DJ, Deng ZP, Zhao YC, Ai LF, Sun Y, Wang ZY, Zhang SW. Photoregulatory protein kinases fine-tune plant photomorphogenesis by directing a bifunctional phospho-code on HY5 in Arabidopsis. Dev Cell 2024; 59:1737-1749.e7. [PMID: 38677285 DOI: 10.1016/j.devcel.2024.04.007] [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: 07/10/2023] [Revised: 12/28/2023] [Accepted: 04/04/2024] [Indexed: 04/29/2024]
Abstract
Photomorphogenesis is a light-dependent plant growth and development program. As the core regulator of photomorphogenesis, ELONGATED HYPOCOTYL 5 (HY5) is affected by dynamic changes in its transcriptional activity and protein stability; however, little is known about the mediators of these processes. Here, we identified PHOTOREGULATORY PROTEIN KINASE 1 (PPK1), which interacts with and phosphorylates HY5 in Arabidopsis, as one such mediator. The phosphorylation of HY5 by PPK1 is essential to establish high-affinity binding with B-BOX PROTEIN 24 (BBX24) and CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1), which inhibit the transcriptional activity and promote the degradation of HY5, respectively. As such, PPKs regulate not only the binding of HY5 to its target genes under light conditions but also HY5 degradation when plants are transferred from light to dark. Our data identify a PPK-mediated phospho-code on HY5 that integrates the molecular mechanisms underlying the regulation of HY5 to precisely control plant photomorphogenesis.
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Affiliation(s)
- Nan Zhang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Chuang-Qi Wei
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China; Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA; Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China
| | - Da-Jin Xu
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Zhi-Ping Deng
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Ya-Chao Zhao
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Lian-Feng Ai
- Technology Center of Shijiazhuang Customs, Shijiazhuang 050051, China
| | - Ying Sun
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Zhi-Yong Wang
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA.
| | - Sheng-Wei Zhang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China.
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Deng H, Zhang Y, Manzoor MA, Sabir IA, Han B, Song C. Genome-scale identification, expression and evolution analysis of B-box members in Dendrobium huoshanense. Heliyon 2024; 10:e32773. [PMID: 38975129 PMCID: PMC11225821 DOI: 10.1016/j.heliyon.2024.e32773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 05/24/2024] [Accepted: 06/09/2024] [Indexed: 07/09/2024] Open
Abstract
B-box (BBX) proteins have been recognized as vital determinants in plant development, morphogenesis, and adaptive responses to a myriad of environmental stresses. These zinc-finger proteins play a pivotal role in various biological processes. Their influence spans photomorphogenesis, the regulation of flowering, and imparting resilience to a wide array of challenges, encompassing both biotic and abiotic factors. Chromosome localization, gene structure and conserved motifs, phylogenetic analysis, collinearity analysis, expression profiling, fluorescence quantitative analysis, and tobacco transient transformation methods were used for functional localization and expression pattern analysis of the DhBBX gene. A total of 23 DhBBX members were identified from Dendrobium huoshanense. Subsequent phylogenetic evaluations effectively segregated these genes into five discrete evolutionary subsets. The predictions of subcellular localizations revealed that all these proteins were localized in the nucleus. The genetic composition and patterns showed that the majority of these genes consisted of several exons, with a few variations that could be attributed to transposon insertion. A comprehensive analysis using qRT-PCR was conducted to unravel the expression patterns of these genes in D. huoshanense, with a specific concentration on their responses to various hormone treatments and cold stress. Subcellular localization reveals that DhBBX21 and DhBBX9 are located in the nucleus. Our results provide a deep comprehension of the complex regulatory mechanisms of BBXs in response to various environmental and hormonal stimuli. These discoveries encourage further detailed and focused investigations into the operational dynamics of the BBX gene family in a wider range of plant species.
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Affiliation(s)
- Hui Deng
- Anhui Dabieshan Academy of Traditional Chinese Medicine, Anhui Engineering Research Center for Eco-Agriculture of Traditional Chinese Medicine, College of Biological and Pharmaceutical Engineering, West Anhui University, Luan, 237012, China
| | - Yingyu Zhang
- Henan Key Laboratory of Rare Diseases, Endocrinology and Metabolism Center, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, China
| | - Muhammad Aamir Manzoor
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 201109, China
| | - Irfan Ali Sabir
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Bangxing Han
- Anhui Dabieshan Academy of Traditional Chinese Medicine, Anhui Engineering Research Center for Eco-Agriculture of Traditional Chinese Medicine, College of Biological and Pharmaceutical Engineering, West Anhui University, Luan, 237012, China
| | - Cheng Song
- Anhui Dabieshan Academy of Traditional Chinese Medicine, Anhui Engineering Research Center for Eco-Agriculture of Traditional Chinese Medicine, College of Biological and Pharmaceutical Engineering, West Anhui University, Luan, 237012, China
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Yang G, Sun M, Brewer L, Tang Z, Nieuwenhuizen N, Cooney J, Xu S, Sheng J, Andre C, Xue C, Rebstock R, Yang B, Chang W, Liu Y, Li J, Wang R, Qin M, Brendolise C, Allan AC, Espley RV, Lin‐Wang K, Wu J. Allelic variation of BBX24 is a dominant determinant controlling red coloration and dwarfism in pear. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:1468-1490. [PMID: 38169146 PMCID: PMC11123420 DOI: 10.1111/pbi.14280] [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: 10/09/2023] [Revised: 12/13/2023] [Accepted: 12/20/2023] [Indexed: 01/05/2024]
Abstract
Variation in anthocyanin biosynthesis in pear fruit provides genetic germplasm resources for breeding, while dwarfing is an important agronomic trait, which is beneficial to reduce the management costs and allow for the implementation of high-density cultivation. Here, we combined bulked segregant analysis (BSA), quantitative trait loci (QTL), and structural variation (SV) analysis to identify a 14-bp deletion which caused a frame shift mutation and resulted in the premature translation termination of a B-box (BBX) family of zinc transcription factor, PyBBX24, and its allelic variation termed PyBBX24ΔN14. PyBBX24ΔN14 overexpression promotes anthocyanin biosynthesis in pear, strawberry, Arabidopsis, tobacco, and tomato, while that of PyBBX24 did not. PyBBX24ΔN14 directly activates the transcription of PyUFGT and PyMYB10 through interaction with PyHY5. Moreover, stable overexpression of PyBBX24ΔN14 exhibits a dwarfing phenotype in Arabidopsis, tobacco, and tomato plants. PyBBX24ΔN14 can activate the expression of PyGA2ox8 via directly binding to its promoter, thereby deactivating bioactive GAs and reducing the plant height. However, the nuclear localization signal (NLS) and Valine-Proline (VP) motifs in the C-terminus of PyBBX24 reverse these effects. Interestingly, mutations leading to premature termination of PyBBX24 were also identified in red sports of un-related European pear varieties. We conclude that mutations in PyBBX24 gene link both an increase in pigmentation and a decrease in plant height.
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Affiliation(s)
- Guangyan Yang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
- Zhongshan Biological Breeding LaboratoryNanjingJiangsuChina
| | - Manyi Sun
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
- Zhongshan Biological Breeding LaboratoryNanjingJiangsuChina
| | - Lester Brewer
- The New Zealand Institute for Plant & Food Research LimitedAucklandNew Zealand
| | - Zikai Tang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
| | - Niels Nieuwenhuizen
- The New Zealand Institute for Plant & Food Research LimitedAucklandNew Zealand
| | - Janine Cooney
- The New Zealand Institute for Plant & Food Research LimitedAucklandNew Zealand
| | - Shaozhuo Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
| | - Jiawen Sheng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
| | - Christelle Andre
- The New Zealand Institute for Plant & Food Research LimitedAucklandNew Zealand
| | - Cheng Xue
- State Key Laboratory of Crop Biology, College of Horticulture Science and EngineeringShandong Agricultural UniversityTai'anChina
| | - Ria Rebstock
- The New Zealand Institute for Plant & Food Research LimitedAucklandNew Zealand
| | - Bo Yang
- The New Zealand Institute for Plant & Food Research LimitedAucklandNew Zealand
| | - Wenjing Chang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
| | - Yueyuan Liu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
| | - Jiaming Li
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
- Zhongshan Biological Breeding LaboratoryNanjingJiangsuChina
| | - Runze Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
| | - Mengfan Qin
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
| | - Cyril Brendolise
- The New Zealand Institute for Plant & Food Research LimitedAucklandNew Zealand
| | - Andrew C. Allan
- The New Zealand Institute for Plant & Food Research LimitedAucklandNew Zealand
| | - Richard V. Espley
- The New Zealand Institute for Plant & Food Research LimitedAucklandNew Zealand
| | - Kui Lin‐Wang
- The New Zealand Institute for Plant & Food Research LimitedAucklandNew Zealand
| | - Jun Wu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of HorticultureNanjing Agricultural UniversityNanjingChina
- Zhongshan Biological Breeding LaboratoryNanjingJiangsuChina
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7
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Wu R, Li Y, Wang L, Li Z, Wu R, Xu K, Liu Y. The DBB Family in Populus trichocarpa: Identification, Characterization, Evolution and Expression Profiles. Molecules 2024; 29:1823. [PMID: 38675643 PMCID: PMC11054233 DOI: 10.3390/molecules29081823] [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: 03/02/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
The B-box proteins (BBXs) encode a family of zinc-finger transcription factors that regulate the plant circadian rhythm and early light morphogenesis. The double B-box (DBB) family is in the class of the B-box family, which contains two conserved B-box domains and lacks a CCT (CO, CO-like and TOC1) motif. In this study, the identity, classification, structures, conserved motifs, chromosomal location, cis elements, duplication events, and expression profiles of the PtrDBB genes were analyzed in the woody model plant Populus trichocarpa. Here, 12 PtrDBB genes (PtrDBB1-PtrDBB12) were identified and classified into four distinct groups, and all of them were homogeneously spread among eight out of seventeen poplar chromosomes. The collinearity analysis of the DBB family genes from P. trichocarpa and two other species (Z. mays and A. thaliana) indicated that segmental duplication gene pairs and high-level conservation were identified. The analysis of duplication events demonstrates an insight into the evolutionary patterns of DBB genes. The previously published transcriptome data showed that PtrDBB genes represented distinct expression patterns in various tissues at different stages. In addition, it was speculated that several PtrDBBs are involved in the responsive to drought stress, light/dark, and ABA and MeJA treatments, which implied that they might function in abiotic stress and phytohormone responses. In summary, our results contribute to the further understanding of the DBB family and provide a reference for potential functional studies of PtrDBB genes in P. trichocarpa.
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Affiliation(s)
- Ruihua Wu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (L.W.); (Z.L.); (R.W.); (K.X.)
| | - Yuxin Li
- Melbourne School of Design, The University of Melbourne, Parkville, VIC 3010, Australia;
| | - Lin Wang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (L.W.); (Z.L.); (R.W.); (K.X.)
| | - Zitian Li
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (L.W.); (Z.L.); (R.W.); (K.X.)
| | - Runbin Wu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (L.W.); (Z.L.); (R.W.); (K.X.)
| | - Kehang Xu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (L.W.); (Z.L.); (R.W.); (K.X.)
| | - Yixin Liu
- College of Landscape Architecture and Art, Northwest A & F University, Yangling 712100, China
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8
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Li S, Guo S, Gao X, Wang X, Liu Y, Wang J, Li X, Zhang J, Fu B. Genome-wide identification of B-box zinc finger (BBX) gene family in Medicago sativa and their roles in abiotic stress responses. BMC Genomics 2024; 25:110. [PMID: 38267840 PMCID: PMC10809573 DOI: 10.1186/s12864-024-10036-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 01/21/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND B-box (BBX) family is a class of zinc finger transcription factors (TFs) that play essential roles in regulating plant growth, development, as well as abiotic stress. However, no systematic analysis of BBX genes has yet been conducted in alfalfa (Medica go sativa L.), and their functions have not been elucidated up to now. RESULTS In this study, 28 MsBBX genes were identified from the alfalfa genome, which were clustered into 4 subfamilies according to an evolutionary tree of BBX proteins. Exon-intron structure and conserved motif analysis reflected the evolutionary conservation of MsBBXs in alfalfa. Collinearity analysis showed that segmental duplication promoted the expansion of the MsBBX family. Analysis of cis-regulatory elements suggested that the MsBBX genes possessed many growth/development-, light-, phytohormone-, and abiotic stress-related elements. MsBBX genes were differentially expressed in leaves, flowers, pre-elongated stems, elongated stems, roots and nodules, and most MsBBXs were remarkably induced by drought, salt and various plant growth regulators (ABA, JA, and SA). Further functional verification demonstrated that overexpressing of the MsBBX11 gene clearly promoted salt tolerance in transgenic Arabidopsis by regulating growth and physiological processes of seedlings. CONCLUSIONS This research provides insights into further functional research and regulatory mechanisms of MsBBX family genes under abiotic stress of alfalfa.
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Affiliation(s)
- Shuxia Li
- College of Forestry and Prataculture, Ningxia University, Yinchuan, China.
- Ningxia Grassland and Animal Husbandry Engineering Technology Research Center, Yinchuan, China.
- Key Laboratory for Model Innovation in Forage Production Efficiency, Ministry of Agriculture and Rural Affairs, Yinchuan, China.
| | - Shuaiqi Guo
- Fujian Xinnong Dazheng Bio-Engineering Co., Ltd, Fuzhou, China
| | - Xueqin Gao
- College of Forestry and Prataculture, Ningxia University, Yinchuan, China
| | - Xiaotong Wang
- College of Forestry and Prataculture, Ningxia University, Yinchuan, China
| | - Yaling Liu
- Inner Mongolia Pratacultural Technology Innovation Center Co., Ltd, Hohhot, China
| | - Jing Wang
- College of Forestry and Prataculture, Ningxia University, Yinchuan, China
| | - Xiaohong Li
- College of Forestry and Prataculture, Ningxia University, Yinchuan, China
| | - Jinqing Zhang
- College of Forestry and Prataculture, Ningxia University, Yinchuan, China
| | - Bingzhe Fu
- College of Forestry and Prataculture, Ningxia University, Yinchuan, China.
- Ningxia Grassland and Animal Husbandry Engineering Technology Research Center, Yinchuan, China.
- Key Laboratory for Model Innovation in Forage Production Efficiency, Ministry of Agriculture and Rural Affairs, Yinchuan, China.
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9
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Buelbuel S, Sakuraba Y, Sedaghatmehr M, Watanabe M, Hoefgen R, Balazadeh S, Mueller-Roeber B. Arabidopsis BBX14 negatively regulates nitrogen starvation- and dark-induced leaf senescence. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 116:251-268. [PMID: 37382898 DOI: 10.1111/tpj.16374] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/03/2023] [Accepted: 06/14/2023] [Indexed: 06/30/2023]
Abstract
Senescence is a highly regulated process driven by developmental age and environmental factors. Although leaf senescence is accelerated by nitrogen (N) deficiency, the underlying physiological and molecular mechanisms are largely unknown. Here, we reveal that BBX14, a previously uncharacterized BBX-type transcription factor in Arabidopsis, is crucial for N starvation-induced leaf senescence. We find that inhibiting BBX14 by artificial miRNA (amiRNA) accelerates senescence during N starvation and in darkness, while BBX14 overexpression (BBX14-OX) delays it, identifying BBX14 as a negative regulator of N starvation- and dark-induced senescence. During N starvation, nitrate and amino acids like glutamic acid, glutamine, aspartic acid, and asparagine were highly retained in BBX14-OX leaves compared to the wild type. Transcriptome analysis showed a large number of senescence-associated genes (SAGs) to be differentially expressed between BBX14-OX and wild-type plants, including ETHYLENE INSENSITIVE3 (EIN3) which regulates N signaling and leaf senescence. Chromatin immunoprecipitation (ChIP) showed that BBX14 directly regulates EIN3 transcription. Furthermore, we revealed the upstream transcriptional cascade of BBX14. By yeast one-hybrid screen and ChIP, we found that MYB44, a stress-responsive MYB transcription factor, directly binds to the promoter of BBX14 and activates its expression. In addition, Phytochrome Interacting Factor 4 (PIF4) binds to the promoter of BBX14 to repress BBX14 transcription. Thus, BBX14 functions as a negative regulator of N starvation-induced senescence through EIN3 and is directly regulated by PIF4 and MYB44.
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Affiliation(s)
- Selin Buelbuel
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam, Germany
| | - Yasuhito Sakuraba
- Graduate School of Agricultural and Life Sciences, Biotechnology Research Center, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Mastoureh Sedaghatmehr
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam, Germany
| | - Mutsumi Watanabe
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Rainer Hoefgen
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Salma Balazadeh
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam, Germany
| | - Bernd Mueller-Roeber
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam, Germany
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10
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Chiriotto TS, Saura-Sánchez M, Barraza C, Botto JF. BBX24 Increases Saline and Osmotic Tolerance through ABA Signaling in Arabidopsis Seeds. PLANTS (BASEL, SWITZERLAND) 2023; 12:2392. [PMID: 37446954 DOI: 10.3390/plants12132392] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023]
Abstract
Seed germination is a critical stage for survival during the life cycle of an individual plant. Genetic and environmental cues are integrated by individual seeds to determine germination, mainly achieved through regulation of the metabolism and signaling of gibberellins (GA) and abscisic acid (ABA), two phytohormones with antagonistic roles. Saline and drought conditions can arrest the germination of seeds and limit the seedling emergence and homogeneity of crops. This work aimed to study the function of BBX24, a B-Box transcription factor, in the control of germination of Arabidopsis thaliana seeds imbibed in saline and osmotic conditions. Seeds of mutant and reporter GUS lines of BBX24 were incubated at different doses of NaCl and polyethylene-glycol (PEG) solutions and with ABA, GA and their inhibitors to evaluate the rate of germination. We found that BBX24 promotes seed germination under moderated stresses. The expression of BBX24 is inhibited by NaCl and PEG. In addition, ABA suppresses BBX24-induced seed germination. Additional experiments suggest that BBX24 reduces ABA sensitivity, improving NaCl tolerance, and increases GA sensitivity in seeds imbibed in ABA. In addition, BBX24 inhibits the expression of ABI3 and ABI5 and genetically interacts upstream of HY5 and ABI5. This study demonstrates the relevance of BBX24 to induce drought and salinity tolerance in seed germination to ensure seedling emergence in sub-optimal environments.
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Affiliation(s)
- Tai S Chiriotto
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Agronomía, Universidad de Buenos Aires (UBA), Ciudad Autónoma de Buenos Aires C1417DSE, Argentina
| | - Maite Saura-Sánchez
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Agronomía, Universidad de Buenos Aires (UBA), Ciudad Autónoma de Buenos Aires C1417DSE, Argentina
| | - Carla Barraza
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Agronomía, Universidad de Buenos Aires (UBA), Ciudad Autónoma de Buenos Aires C1417DSE, Argentina
| | - Javier F Botto
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Agronomía, Universidad de Buenos Aires (UBA), Ciudad Autónoma de Buenos Aires C1417DSE, Argentina
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11
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Saura-Sánchez M, Chiriotto TS, Cascales J, Gómez-Ocampo G, Hernández-García J, Li Z, Pruneda-Paz JL, Blázquez MA, Botto JF. BBX24 Interacts with JAZ3 to Promote Growth by Reducing DELLA Activity in Shade Avoidance. PLANT & CELL PHYSIOLOGY 2023; 64:474-485. [PMID: 36715091 DOI: 10.1093/pcp/pcad011] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 01/17/2023] [Accepted: 01/26/2023] [Indexed: 05/17/2023]
Abstract
Shade avoidance syndrome (SAS) is a strategy of major adaptive significance and typically includes elongation of the stem and petiole, leaf hyponasty, reduced branching and phototropic orientation of the plant shoot toward canopy gaps. Both cryptochrome 1 and phytochrome B (phyB) are the major photoreceptors that sense the reduction in the blue light fluence rate and the low red:far-red ratio, respectively, and both light signals are associated with plant density and the resource reallocation when SAS responses are triggered. The B-box (BBX)-containing zinc finger transcription factor BBX24 has been implicated in the SAS as a regulator of DELLA activity, but this interaction does not explain all the observed BBX24-dependent regulation in shade light. Here, through a combination of transcriptional meta-analysis and large-scale identification of BBX24-interacting transcription factors, we found that JAZ3, a jasmonic acid signaling component, is a direct target of BBX24. Furthermore, we demonstrated that joint loss of BBX24 and JAZ3 function causes insensitivity to DELLA accumulation, and the defective shade-induced elongation in this mutant is rescued by loss of DELLA or phyB function. Therefore, we propose that JAZ3 is part of the regulatory network that controls the plant growth in response to shade, through a mechanism in which BBX24 and JAZ3 jointly regulate DELLA activity. Our results provide new insights into the participation of BBX24 and JA signaling in the hypocotyl shade avoidance response in Arabidopsis.
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Affiliation(s)
- Maite Saura-Sánchez
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Agronomía, Universidad de Buenos Aires (UBA), Av. San Martín 4453, Ciudad Autónoma de Buenos Aires C1417DSE, Argentina
| | - Tai Sabrina Chiriotto
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Agronomía, Universidad de Buenos Aires (UBA), Av. San Martín 4453, Ciudad Autónoma de Buenos Aires C1417DSE, Argentina
| | - Jimena Cascales
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Agronomía, Universidad de Buenos Aires (UBA), Av. San Martín 4453, Ciudad Autónoma de Buenos Aires C1417DSE, Argentina
| | - Gabriel Gómez-Ocampo
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Agronomía, Universidad de Buenos Aires (UBA), Av. San Martín 4453, Ciudad Autónoma de Buenos Aires C1417DSE, Argentina
| | - Jorge Hernández-García
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-Universidad Politécnica de Valencia, C/Ingeniero Fausto Elio s/n, Valencia 46022, Spain
| | - Zheng Li
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0348, USA
| | - José Luis Pruneda-Paz
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0348, USA
| | - Miguel Angel Blázquez
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-Universidad Politécnica de Valencia, C/Ingeniero Fausto Elio s/n, Valencia 46022, Spain
| | - Javier Francisco Botto
- Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Agronomía, Universidad de Buenos Aires (UBA), Av. San Martín 4453, Ciudad Autónoma de Buenos Aires C1417DSE, Argentina
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12
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Kiełbowicz-Matuk A, Grądzka K, Biegańska M, Talar U, Czarnecka J, Rorat T. The StBBX24 protein affects the floral induction and mediates salt tolerance in Solanum tuberosum. FRONTIERS IN PLANT SCIENCE 2022; 13:965098. [PMID: 36160990 PMCID: PMC9490078 DOI: 10.3389/fpls.2022.965098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/10/2022] [Indexed: 06/16/2023]
Abstract
The transition from vegetative growth to reproductive development is a critical developmental switch in flowering plants to ensure a successful life cycle. However, while the genes controlling flowering are well-known in model plants, they are less well-understood in crops. In this work, we generated potato lines both silenced and overexpressed for the expression of StBBX24, a clock-controlled gene encoding a B-box protein located in the cytosol and nuclear chromatin fraction. We revealed that Solanum tuberosum lines silenced for StBBX24 expression displayed much earlier flowering than wild-type plants. Conversely, plants overexpressing StBBX24 mostly did not produce flower buds other than wild-type plants. In addition, RT-qPCR analyses of transgenic silenced lines revealed substantial modifications in the expression of genes functioning in flowering. Furthermore, S. tuberosum lines silenced for StBBX24 expression displayed susceptibility to high salinity with a lower capacity of the antioxidant system and strongly decreased expression of genes encoding Na+ transporters that mediate salt tolerance, contrary to the plants with StBBX24 overexpression. Altogether, these data reveal that StBBX24 participates in potato flowering repression and is involved in salt stress response.
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Affiliation(s)
- Agnieszka Kiełbowicz-Matuk
- Department of Regulation of Gene Expression, Institute of Plant Genetics, Polish Academy of Sciences, Poznan, Poland
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13
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Bandara WW, Wijesundera WSS, Hettiarachchi C. Rice and Arabidopsis BBX proteins: toward genetic engineering of abiotic stress resistant crops. 3 Biotech 2022; 12:164. [PMID: 36092969 PMCID: PMC9452616 DOI: 10.1007/s13205-022-03228-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 06/17/2022] [Indexed: 11/01/2022] Open
Abstract
Productivity of crop plants are enormously affected by biotic and abiotic stresses. The co-occurrence of several abiotic stresses may lead to death of crop plants. Hence, it is the responsibility of plant scientists to develop crop plants equipped with multistress tolerance pathways. A subgroup of zinc finger transcription factor family, known as B-box (BBX) proteins, play a key role in light and hormonal regulation pathways. In addition, BBX proteins act as key regulatory proteins in many abiotic stress regulatory pathways, including Ultraviolet-B (UV-B), salinity, drought, heat and cold, and heavy metal stresses. Most of the BBX proteins identified in Arabidopsis and rice respond to more than one abiotic stress. Considering the requirement of improving rice for multistress tolerance, this review discusses functionally characterized Arabidopsis and rice BBX proteins in the development of abiotic stress responses. Furthermore, it highlights the participation of BBX proteins in multistress regulation and crop improvement through genetic engineering.
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14
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Podolec R, Wagnon TB, Leonardelli M, Johansson H, Ulm R. Arabidopsis B-box transcription factors BBX20-22 promote UVR8 photoreceptor-mediated UV-B responses. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:422-439. [PMID: 35555928 PMCID: PMC9541035 DOI: 10.1111/tpj.15806] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 04/26/2022] [Accepted: 05/10/2022] [Indexed: 06/01/2023]
Abstract
Plants undergo photomorphogenic development in the presence of light. Photomorphogenesis is repressed by the E3 ubiquitin ligase CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1), which binds to substrates through their valine-proline (VP) motifs. The UV RESISTANCE LOCUS 8 (UVR8) photoreceptor senses UV-B and inhibits COP1 through the cooperative binding of its own VP motif and photosensing core to COP1, thereby preventing COP1 binding to substrates, including the basic leucine zipper (bZIP) transcriptional regulator ELONGATED HYPOCOTYL 5 (HY5). As a key promoter of visible light and UV-B photomorphogenesis, HY5 requires coregulators for its function. The B-box family transcription factors BBX20-BBX22 were recently described as HY5 rate-limiting coactivators under red light, but their role in UVR8 signaling was unknown. Here we describe a hypermorphic bbx21-3D mutant with enhanced photomorphogenesis, carrying a proline-to-leucine mutation at position 314 in the VP motif that impairs the interaction with and regulation by COP1. We show that BBX21 and BBX22 are UVR8-dependently stabilized after UV-B exposure, which is counteracted by a repressor induced by HY5/BBX activity. bbx20 bbx21 bbx22 mutants under UV-B are impaired in hypocotyl growth inhibition, photoprotective pigment accumulation and the expression of several HY5-dependent genes under continuous UV-B, but the immediate induction of marker genes after exposure to UV-B remains surprisingly rather unaffected. We conclude that BBX20-BBX22 contribute to HY5 activity in a subset of UV-B responses, but that additional, presently unknown, coactivators for HY5 are functional in early UVR8 signaling.
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Affiliation(s)
- Roman Podolec
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3)University of GenevaGenevaSwitzerland
| | - Timothée B. Wagnon
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
| | - Manuela Leonardelli
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
| | - Henrik Johansson
- Institute of Biology/Applied GeneticsDahlem Centre of Plant Sciences (DCPS), Freie Universität BerlinBerlinGermany
| | - Roman Ulm
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3)University of GenevaGenevaSwitzerland
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15
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Huang CK, Lin WD, Wu SH. An improved repertoire of splicing variants and their potential roles in Arabidopsis photomorphogenic development. Genome Biol 2022; 23:50. [PMID: 35139889 PMCID: PMC8827149 DOI: 10.1186/s13059-022-02620-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 01/25/2022] [Indexed: 01/03/2023] Open
Abstract
Background Light switches on the photomorphogenic development of young plant seedlings, allowing young seedlings to acquire photosynthetic capacities and gain survival fitness. Light regulates gene expression at all levels of the central dogma, including alternative splicing (AS) during the photomorphogenic development. However, accurate determination of full-length (FL) splicing variants has been greatly hampered by short-read RNA sequencing technologies. Result In this study, we adopt PacBio isoform sequencing (Iso-seq) to overcome the limitation of the short-read RNA-seq technologies. Normalized cDNA libraries used for Iso-seq allows for comprehensive and effective identification of FL AS variants. Our analyses reveal more than 30,000 splicing variant models from approximately 16,500 gene loci and additionally identify approximately 700 previously unannotated genes. Among the variants, approximately 12,000 represent new gene models. Intron retention (IR) is the most frequently observed form of variants, and many IR-containing AS variants show evidence of engagement in translation. Our study reveals the formation of heterodimers of transcription factors composed of annotated and IR-containing AS variants. Moreover, transgenic plants overexpressing the IR forms of two B-BOX DOMAIN PROTEINs exhibits light-hypersensitive phenotypes, suggesting their regulatory roles in modulating optimal light responses. Conclusions This study provides an accurate and comprehensive portrait of full-length transcript isoforms and experimentally confirms the presence of de novo synthesized AS variants that impose regulatory functions in photomorphogenic development in Arabidopsis. Supplementary Information The online version contains supplementary material available at 10.1186/s13059-022-02620-2.
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Affiliation(s)
- Chun-Kai Huang
- Institute of Plant and Microbial Biology, Academia Sinica, 128, Sec. 2, Academia Rd., Taipei, 11529, Taiwan
| | - Wen-Dar Lin
- The Bioinformatics Core Lab, Institute of Plant and Microbial Biology, Academia Sinica, Taipei, 11529, Taiwan
| | - Shu-Hsing Wu
- Institute of Plant and Microbial Biology, Academia Sinica, 128, Sec. 2, Academia Rd., Taipei, 11529, Taiwan.
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16
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Chen P, Zhi F, Li X, Shen W, Yan M, He J, Bao C, Fan T, Zhou S, Ma F, Guan Q. Zinc-finger protein MdBBX7/MdCOL9, a target of MdMIEL1 E3 ligase, confers drought tolerance in apple. PLANT PHYSIOLOGY 2022; 188:540-559. [PMID: 34618120 PMCID: PMC8774816 DOI: 10.1093/plphys/kiab420] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/02/2021] [Indexed: 05/21/2023]
Abstract
Water deficit is one of the main challenges for apple (Malus × domestica) growth and productivity. Breeding drought-tolerant cultivars depends on a thorough understanding of the drought responses of apple trees. Here, we identified the zinc-finger protein B-BOX 7/CONSTANS-LIKE 9 (MdBBX7/MdCOL9), which plays a positive role in apple drought tolerance. The overexpression of MdBBX7 enhanced drought tolerance, whereas knocking down MdBBX7 expression reduced it. Chromatin immunoprecipitation-sequencing (ChIP-seq) analysis identified one cis-element of MdBBX7, CCTTG, as well as its known binding motif, the T/G box. ChIP-seq and RNA-seq identified 1,197 direct targets of MdBBX7, including ETHYLENE RESPONSE FACTOR (ERF1), EARLY RESPONSIVE TO DEHYDRATION 15 (ERD15), and GOLDEN2-LIKE 1 (GLK1) and these were further verified by ChIP-qPCR and electronic mobility shift assays. Yeast two-hybrid screen identified an interacting protein of MdBBX7, RING-type E3 ligase MYB30-INTERACTING E3 LIGASE 1 (MIEL1). Further examination revealed that MdMIEL1 could mediate the ubiquitination and degradation of MdBBX7 by the 26S proteasome pathway. Genetic interaction analysis suggested that MdMIEL1 acts as an upstream factor of MdBBX7. In addition, MdMIEL1 was a negative regulator of the apple drought stress response. Taken together, our results illustrate the molecular mechanisms by which the MdMIEL1-MdBBX7 module influences the response of apple to drought stress.
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Affiliation(s)
- Pengxiang Chen
- 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
| | - Fang Zhi
- 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
| | - Xuewei 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
| | - Wenyun Shen
- 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
| | - Mingjia Yan
- 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
| | - Jieqiang He
- 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
| | - Chana Bao
- 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
| | - Tianle Fan
- 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
| | - Shuangxi Zhou
- The New Zealand Institute for Plant and Food Research Ltd., Hawke's Bay 4130, New Zealand
| | - 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
| | - Qingmei Guan
- 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
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Ma J, Dai JX, Liu XW, Lin D. Genome-wide and expression analysis of B-box gene family in pepper. BMC Genomics 2021; 22:883. [PMID: 34872495 PMCID: PMC8650552 DOI: 10.1186/s12864-021-08186-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 11/17/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND BBX transcription factors are a kind of zinc finger transcription factors with one or two B-box domains, which partilant in plant growth, development and response to abiotic or biotic stress. The BBX family has been identified in Arabidopsis, rice, tomato and some other model plant genomes. RESULTS Here, 24 CaBBX genes were identified in pepper (Capsicum annuum L.), and the phylogenic analysis, structures, chromosomal location, gene expression patterns and subcellular localizations were also carried out to understand the evolution and function of CaBBX genes. All these CaBBXs were divided into five classes, and 20 of them distributed in 11 of 12 pepper chromosomes unevenly. Most duplication events occurred in subgroup I. Quantitative RT-PCR indicated that several CaBBX genes were induced by abiotic stress and hormones, some had tissue-specific expression profiles or differentially expressed at developmental stages. Most of CaBBX members were predicated to be nucleus-localized in consistent with the transient expression assay by onion inner epidermis of the three tested CaBBX members (CaBBX5, 6 and 20). CONCLUSION Several CaBBX genes were induced by abiotic stress and exogenous phytohormones, some expressed tissue-specific and variously at different developmental stage. The detected CaBBXs act as nucleus-localized transcription factors. Our data might be a foundation in the identification of CaBBX genes, and a further understanding of their biological function in future studies.
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Affiliation(s)
- Jing Ma
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Key laboratory of horticultural plant genetic improvement and breeding of Qingdao, College of Horticulture, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, 266109, China
| | - Jia-Xi Dai
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Key laboratory of horticultural plant genetic improvement and breeding of Qingdao, College of Horticulture, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, 266109, China
| | - Xiao-Wei Liu
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Key laboratory of horticultural plant genetic improvement and breeding of Qingdao, College of Horticulture, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, 266109, China
| | - Duo Lin
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Key laboratory of horticultural plant genetic improvement and breeding of Qingdao, College of Horticulture, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, 266109, China.
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18
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Shi C, Liu H. How plants protect themselves from ultraviolet-B radiation stress. PLANT PHYSIOLOGY 2021; 187:1096-1103. [PMID: 34734275 PMCID: PMC8566272 DOI: 10.1093/plphys/kiab245] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 05/10/2021] [Indexed: 05/20/2023]
Abstract
Ultraviolet-B (UV-B) radiation has a wavelength range of 280-315 nm. Plants perceive UV-B as an environmental signal and a potential abiotic stress factor that affects development and acclimation. UV-B regulates photomorphogenesis including hypocotyl elongation inhibition, cotyledon expansion, and flavonoid accumulation, but high intensity UV-B can also harm plants by damaging DNA, triggering accumulation of reactive oxygen species, and impairing photosynthesis. Plants have evolved "sunscreen" flavonoids that accumulate under UV-B stress to prevent or limit damage. The UV-B receptor UV RESISTANCE LOCUS 8 (UVR8) plays a critical role in promoting flavonoid biosynthesis to enhance UV-B stress tolerance. Recent studies have clarified several UVR8-mediated and UVR8-independent pathways that regulate UV-B stress tolerance. Here, we review these additions to our understanding of the molecular pathways involved in UV-B stress tolerance, highlighting the important roles of ELONGATED HYPOCOTYL 5, BRI1-EMS-SUPPRESSOR1, MYB DOMAIN PROTEIN 13, MAP KINASE PHOSPHATASE 1, and ATM- and RAD3-RELATED. We also summarize the known interactions with visible light receptors and the contribution of melatonin to UV-B stress responses. Finally, we update a working model of the UV-B stress tolerance pathway.
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Affiliation(s)
- Chen Shi
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
- University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Hongtao Liu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
- Author for communication:
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CpBBX19, a B-Box Transcription Factor Gene of Chimonanthus praecox, Improves Salt and Drought Tolerance in Arabidopsis. Genes (Basel) 2021; 12:genes12091456. [PMID: 34573437 PMCID: PMC8465485 DOI: 10.3390/genes12091456] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 01/03/2023] Open
Abstract
Zinc-finger proteins are important transcription factors in plants, responding to adversity and regulating the growth and development of plants. However, the roles of the BBX gene family of zinc-finger proteins in wintersweet (Chimonanthus praecox) have yet to be elucidated. In this study, a group IV subfamily BBX gene, CpBBX19, was identified and isolated from wintersweet. Quantitative real-time PCR (qRT-PCR) analyses revealed that CpBBX19 was expressed in all tissues and that expression was highest in cotyledons and inner petals. CpBBX19 was also expressed in all flower development stages, with the highest expression detected in early initiating bloom, followed by late initiating bloom and bloom. In addition, the expression of CpBBX19 was induced by different abiotic stress (cold, heat, NaCl, and drought) and hormone (ABA and MeJA) treatments. Heterologous expression of CpBBX19 in Arabidopsis thaliana (Arabidopsis) enhanced the tolerance of this plant to salt and drought stress as electrolyte leakage and malondialdehyde (MDA) concentrations in transgenic Arabidopsis after stress treatments were significantly lower than those in wild-type (WT) plants. In conclusion, this research demonstrated that CpBBX19 plays a role in the abiotic stress tolerance of wintersweet. These findings lay a foundation for future studies on the BBX gene family of wintersweet and enrich understanding of the molecular mechanism of stress resistance in wintersweet.
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Ravindran N, Ramachandran H, Job N, Yadav A, Vaishak K, Datta S. B-box protein BBX32 integrates light and brassinosteroid signals to inhibit cotyledon opening. PLANT PHYSIOLOGY 2021; 187:446-461. [PMID: 34618149 PMCID: PMC8418414 DOI: 10.1093/plphys/kiab304] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 05/31/2021] [Indexed: 05/20/2023]
Abstract
Cotyledon opening is a key morphological change that occurs in seedlings during de-etiolation. Brassinosteroids (BRs) inhibit the opening of cotyledons in darkness while light promotes cotyledon opening. The molecular regulation of the interplay between light and BR to regulate cotyledon opening is not well understood. Here, we show the B-box protein BBX32 negatively regulates light signaling and promotes BR signaling to inhibit cotyledon opening in Arabidopsis (Arabidopsis thaliana). BBX32 is highly expressed in the cotyledons of seedlings during de-etiolation. bbx32 and 35S:BBX32 seedlings exhibit enhanced and reduced cotyledon opening, respectively, in response to both light and brassinazole treatment in dark, suggesting that BBX32 mediates cotyledon opening through both light and BR signaling pathways. BBX32 expression is induced by exogenous BR and is upregulated in bzr1-1D (BRASSINAZOLE RESISTANT1-1D). Our in vitro and in vivo interaction studies suggest that BBX32 physically interacts with BZR1. Further, we found that PHYTOCHROME-INTERACTING FACTOR 3 (PIF3) interacts with BBX32 and promotes BR-mediated cotyledon closure. BBX32, BZR1, and PIF3 regulate the expression of common target genes that modulate the opening and closing of cotyledons. Our work suggests BBX32 integrates light and BR signals to regulate cotyledon opening during de-etiolation.
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Affiliation(s)
- Nevedha Ravindran
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Harshil Ramachandran
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Nikhil Job
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Arpita Yadav
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - K.P. Vaishak
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Sourav Datta
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
- Author for communication:
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21
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Li C, Pei J, Yan X, Cui X, Tsuruta M, Liu Y, Lian C. A poplar B-box protein PtrBBX23 modulates the accumulation of anthocyanins and proanthocyanidins in response to high light. PLANT, CELL & ENVIRONMENT 2021; 44:3015-3033. [PMID: 34114251 DOI: 10.1111/pce.14127] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 05/14/2021] [Accepted: 06/01/2021] [Indexed: 05/20/2023]
Abstract
Flavonoids, which modulate plant resistance to various stresses, can be induced by high light. B-box (BBX) transcription factors (TFs) play crucial roles in the transcriptional regulation of flavonoids biosynthesis, but limited information is available on the association of BBX proteins with high light. We present a detailed overview of 45 Populus trichocarpa BBX TFs. Phylogenetic relationships, gene structure, tissue-specific expression patterns and expression profiles were determined under 10 stress or phytohormone treatments to screen candidate BBX proteins associated with the flavonoid pathway. Sixteen candidate genes were identified, of which five were expressed predominantly in young leaves and roots, and BBX23 showed the most distinct response to high light. Overexpression of BBX23 in poplar activated expression of MYB TFs and structural genes in the flavonoid pathway, thereby promoting the accumulation of proanthocyanidins and anthocyanins. CRISPR/Cas9-generated knockout of BBX23 resulted in the opposite trend. Furthermore, the phenotype induced by BBX23 overexpression was enhanced under exposure to high light. BBX23 was capable of binding directly to the promoters of proanthocyanidin- and anthocyanin-specific genes, and its interaction with HY5 enhanced activation activity. We identified novel regulators of flavonoid biosynthesis in poplar, thereby enhancing our general understanding of the transcriptional regulatory mechanisms involved.
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Affiliation(s)
- Chaofeng Li
- Laboratory of Forest Symbiology, Asian Research Center for Bioresource and Environmental Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Jinli Pei
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Xin Yan
- Plant Biotechnology Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Xin Cui
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Momi Tsuruta
- Laboratory of Forest Symbiology, Asian Research Center for Bioresource and Environmental Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Ying Liu
- International Joint Laboratory of Forest Symbiology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Chunlan Lian
- Laboratory of Forest Symbiology, Asian Research Center for Bioresource and Environmental Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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Pardi SA, Nusinow DA. Out of the Dark and Into the Light: A New View of Phytochrome Photobodies. FRONTIERS IN PLANT SCIENCE 2021; 12:732947. [PMID: 34531891 PMCID: PMC8438518 DOI: 10.3389/fpls.2021.732947] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/05/2021] [Indexed: 05/27/2023]
Abstract
Light is a critical environmental stimulus for plants, serving as an energy source via photosynthesis and a signal for developmental programming. Plants perceive light through various light-responsive proteins, termed photoreceptors. Phytochromes are red-light photoreceptors that are highly conserved across kingdoms. In the model plant Arabidopsis thaliana, phytochrome B serves as a light and thermal sensor, mediating physiological processes such as seedling germination and establishment, hypocotyl growth, chlorophyll biogenesis, and flowering. In response to red light, phytochromes convert to a biologically active form, translocating from the cytoplasm into the nucleus and further compartmentalizes into subnuclear compartments termed photobodies. PhyB photobodies regulate phytochrome-mediated signaling and physiological outputs. However, photobody function, composition, and biogenesis remain undefined since their discovery. Based on photobody cellular dynamics and the properties of internal components, photobodies have been suggested to undergo liquid-liquid phase separation, a process by which some membraneless compartments form. Here, we explore photobodies as environmental sensors, examine the role of their protein constituents, and outline the biophysical perspective that photobodies may be undergoing liquid-liquid phase separation. Understanding the molecular, cellular, and biophysical processes that shape how plants perceive light will help in engineering improved sunlight capture and fitness of important crops.
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Affiliation(s)
- Sarah A. Pardi
- Donald Danforth Plant Science Center, St. Louis, MO, United States
- Division of Biology and Biomedical Sciences, Washington University in St. Louis, St. Louis, MO, United States
| | - Dmitri A. Nusinow
- Donald Danforth Plant Science Center, St. Louis, MO, United States
- Division of Biology and Biomedical Sciences, Washington University in St. Louis, St. Louis, MO, United States
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23
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Ma R, Chen J, Huang B, Huang Z, Zhang Z. The BBX gene family in Moso bamboo (Phyllostachys edulis): identification, characterization and expression profiles. BMC Genomics 2021; 22:533. [PMID: 34256690 PMCID: PMC8276415 DOI: 10.1186/s12864-021-07821-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 06/17/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND The BBX (B-box) family are zinc finger protein (ZFP) transcription factors that play an essential role in plant growth, development and response to abiotic stresses. Although BBX genes have been characterized in many model organisms, genome-wide identification of the BBX family genes have not yet been reported in Moso bamboo (Phyllostachys edulis), and the biological functions of this family remain unknown. RESULT In the present study, we identified 27 BBX genes in the genome of Moso bamboo, and analysis of their conserved motifs and multiple sequence alignments revealed that they all shared highly similar structures. Additionally, phylogenetic and homology analyses indicated that PeBBX genes were divided into three clusters, with whole-genome duplication (WGD) events having facilitated the expansion of this gene family. Light-responsive and stress-related cis-elements were identified by analyzing cis-elements in the promoters of all PeBBX genes. Short time-series expression miner (STEM) analysis revealed that the PeBBX genes had spatiotemporal-specific expression patterns and were likely involved in the growth and development of bamboo shoots. We further explored the downstream target genes of PeBBXs, and GO/KEGG enrichment analysis predicted multiple functions of BBX target genes, including those encoding enzymes involved in plant photosynthesis, pyruvate metabolism and glycolysis/gluconeogenesis. CONCLUSIONS In conclusion, we analyzed the PeBBX genes at multiple different levels, which will contribute to further studies of the BBX family and provide valuable information for the functional validation of this family.
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Affiliation(s)
- Ruifang Ma
- State Key Laboratory of Subtropical Forest Cultivation, Zhejiang A&F University, Lin'an, Zhejiang, 311300, Hangzhou, China
- School of Forestry and Biotechnology, Zhejiang A&F University, Lin'an, Zhejiang, 311300, Hangzhou, China
| | - Jialu Chen
- State Key Laboratory of Subtropical Forest Cultivation, Zhejiang A&F University, Lin'an, Zhejiang, 311300, Hangzhou, China
- School of Forestry and Biotechnology, Zhejiang A&F University, Lin'an, Zhejiang, 311300, Hangzhou, China
| | - Bin Huang
- State Key Laboratory of Subtropical Forest Cultivation, Zhejiang A&F University, Lin'an, Zhejiang, 311300, Hangzhou, China
- School of Forestry and Biotechnology, Zhejiang A&F University, Lin'an, Zhejiang, 311300, Hangzhou, China
| | - Zhinuo Huang
- State Key Laboratory of Subtropical Forest Cultivation, Zhejiang A&F University, Lin'an, Zhejiang, 311300, Hangzhou, China
- School of Forestry and Biotechnology, Zhejiang A&F University, Lin'an, Zhejiang, 311300, Hangzhou, China
| | - Zhijun Zhang
- State Key Laboratory of Subtropical Forest Cultivation, Zhejiang A&F University, Lin'an, Zhejiang, 311300, Hangzhou, China.
- School of Forestry and Biotechnology, Zhejiang A&F University, Lin'an, Zhejiang, 311300, Hangzhou, China.
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Feng Z, Li M, Li Y, Yang X, Wei H, Fu X, Ma L, Lu J, Wang H, Yu S. Comprehensive identification and expression analysis of B-Box genes in cotton. BMC Genomics 2021; 22:439. [PMID: 34118883 PMCID: PMC8196430 DOI: 10.1186/s12864-021-07770-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 06/03/2021] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND B-BOX (BBX) proteins are zinc-finger transcription factors with one or two BBX domains and sometimes a CCT domain. These proteins play an essential role in regulating plant growth and development, as well as in resisting abiotic stress. So far, the BBX gene family has been widely studied in other crops. However, no one has systematically studied the BBX gene in cotton. RESULTS In the present study, 17, 18, 37 and 33 BBX genes were detected in Gossypium arboreum, G. raimondii, G. hirsutum and G. barbadense, respectively, via genome-wide identification. Phylogenetic analysis showed that all BBX genes were divided into 5 main categories. The protein motifs and exon/intron structures showed that each group of BBX genes was highly conserved. Collinearity analysis revealed that the amplification of BBX gene family in Gossypium spp. was mainly through segmental replication. Nonsynonymous (Ka)/ synonymous (Ks) substitution ratios indicated that the BBX gene family had undergone purification selection throughout the long-term natural selection process. Moreover, transcriptomic data showed that some GhBBX genes were highly expressed in floral organs. The qRT-PCR results showed that there were significant differences in GhBBX genes in leaves and shoot apexes between early-maturing materials and late-maturing materials at most periods. Yeast two-hybrid results showed that GhBBX5/GhBBX23 and GhBBX8/GhBBX26 might interact with GhFT. Transcriptome data analysis and qRT-PCR verification showed that different GhBBX genes had different biological functions in abiotic stress and phytohormone response. CONCLUSIONS Our comprehensive analysis of BBX in G. hirsutum provided a basis for further study on the molecular role of GhBBXs in regulating flowering and cotton resistance to abiotic stress.
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Affiliation(s)
- Zhen Feng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 China
| | - Mengyu Li
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, China
| | - Yi Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 China
| | - Xu Yang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, China
| | - Hengling Wei
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 China
| | - Xiaokang Fu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 China
| | - Liang Ma
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 China
| | - Jianhua Lu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 China
| | - Hantao Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 China
| | - Shuxun Yu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000 China
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25
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Balcerowicz M, Mahjoub M, Nguyen D, Lan H, Stoeckle D, Conde S, Jaeger KE, Wigge PA, Ezer D. An early-morning gene network controlled by phytochromes and cryptochromes regulates photomorphogenesis pathways in Arabidopsis. MOLECULAR PLANT 2021; 14:983-996. [PMID: 33766657 DOI: 10.1016/j.molp.2021.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/04/2021] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
Light perception at dawn plays a key role in coordinating multiple molecular processes and in entraining the plant circadian clock. The Arabidopsis mutant lacking the main photoreceptors, however, still shows clock entrainment, indicating that the integration of light into the morning transcriptome is not well understood. In this study, we performed a high-resolution RNA-sequencing time-series experiment, sampling every 2 min beginning at dawn. In parallel experiments, we perturbed temperature, the circadian clock, photoreceptor signaling, and chloroplast-derived light signaling. We used these data to infer a gene network that describes the gene expression dynamics after light stimulus in the morning, and then validated key edges. By sampling time points at high density, we are able to identify three light- and temperature-sensitive bursts of transcription factor activity, one of which lasts for only about 8 min. Phytochrome and cryptochrome mutants cause a delay in the transcriptional bursts at dawn, and completely remove a burst of expression in key photomorphogenesis genes (HY5 and BBX family). Our complete network is available online (http://www-users.york.ac.uk/∼de656/dawnBurst/dawnBurst.html). Taken together, our results show that phytochrome and cryptochrome signaling is required for fine-tuning the dawn transcriptional response to light, but separate pathways can robustly activate much of the program in their absence.
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Affiliation(s)
| | - Mahiar Mahjoub
- Sainsbury Laboratory, University of Cambridge, Cambridge, UK
| | - Duy Nguyen
- Sainsbury Laboratory, University of Cambridge, Cambridge, UK
| | - Hui Lan
- Sainsbury Laboratory, University of Cambridge, Cambridge, UK
| | | | - Susana Conde
- Department of Statistics, University of Warwick, Coventry, UK; Alan Turing Institute, London, UK
| | - Katja E Jaeger
- Leibniz-Institute of Vegetable and Ornamental Crops (IGZ), 14979 Großbeeren, Germany
| | - Philip A Wigge
- Leibniz-Institute of Vegetable and Ornamental Crops (IGZ), 14979 Großbeeren, Germany; Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Daphne Ezer
- Alan Turing Institute, London, UK; Department of Biology, University of York, York YO10 5DD, UK.
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26
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Wang MJ, Ding L, Liu XH, Liu JX. Two B-box domain proteins, BBX28 and BBX29, regulate flowering time at low ambient temperature in Arabidopsis. PLANT MOLECULAR BIOLOGY 2021; 106:21-32. [PMID: 33554307 DOI: 10.1007/s11103-021-01123-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 01/17/2021] [Indexed: 06/12/2023]
Abstract
This paper demonstrates that BBX28 and BBX29 proteins in Arabidopsis promote flowering in association with the CO-FT regulatory module at low ambient temperature under LD conditions. Flowering plants integrate internal developmental signals with external environmental stimuli for precise flowering time control. The expression of BBX29 is up-regulated by low temperature treatment, but the biological function of BBX29 in low temperature response is unknown. In the current study, we examined the biological role of BBX29 and its close-related protein BBX28 in flowering time control under long-day conditions. Although neither BBX28 single mutant nor BBX29 single mutant has a flowering-associated phenotype, the bbx28 bbx29 double mutant plants have an obvious delayed flowering phenotype grown at low ambient temperature (16°C) compared to the wild-type (WT) plants. The expression of FT and TSF was lower in bbx28 bbx29 double mutant plants than in wild-type plants at 16°C. Both BBX28 and BBX29 interact with CONSTANS (CO), an important flowering integrator that directly binds to the FLOWERING LOCUS T (FT) promoter. In the effector-reporter assays, transcriptional activation activity of CO on the FT promoter was reduced in bbx28 bbx29 double mutant plants compared to that in WT plants. Taken together, our results reveal that BBX28 and BBX29 are promoters of flowering in Arabidopsis, especially at low ambient temperature.
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Affiliation(s)
- Mei-Jing Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, 310027, Hangzhou, China
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, 200433, Shanghai, China
| | - Lan Ding
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, 200433, Shanghai, China
| | - Xue-Huan Liu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, 200433, Shanghai, China
| | - Jian-Xiang Liu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, 310027, Hangzhou, China.
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, 200433, Shanghai, China.
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An JP, Wang XF, Zhang XW, You CX, Hao YJ. Apple B-box protein BBX37 regulates jasmonic acid mediated cold tolerance through the JAZ-BBX37-ICE1-CBF pathway and undergoes MIEL1-mediated ubiquitination and degradation. THE NEW PHYTOLOGIST 2021; 229:2707-2729. [PMID: 33119890 DOI: 10.1111/nph.17050] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 10/23/2020] [Indexed: 05/03/2023]
Abstract
The plant hormone jasmonic acid (JA) is involved in the cold stress response, and the inducer of CBF expression 1 (ICE1)- C-repeat binding factor (CBF) regulatory cascade plays a key role in the regulation of cold stress tolerance. In this study, we showed that a novel B-box (BBX) protein MdBBX37 positively regulates JA-mediated cold-stress resistance in apple. We found that MdBBX37 bound to the MdCBF1 and MdCBF4 promoters to activate their transcription, and also interacted with MdICE1 to enhance the transcriptional activity of MdICE1 on MdCBF1, thus promoting its cold tolerance. Two JA signaling repressors, MdJAZ1 and MdJAZ2 (JAZ, JAZMONATE ZIM-DOMAIN), interacted with MdBBX37 to repress the transcriptional activity of MdBBX37 on MdCBF1 and MdCBF4, and also interfered with the interaction between MdBBX37 and MdICE1, thus negatively regulating JA-mediated cold tolerance. E3 ligase MdMIEL1 (MIEL1, MYB30-Interacting E3 Ligase1) reduced MdBBX37-improved cold resistance by mediating ubiquitination and degradation of the MdBBX37 protein. The data reveal that MIEL1 and JAZ proteins co-regulate JA-mediated cold stress tolerance through the BBX37-ICE1-CBF module in apple. These results will aid further examination of the post-translational modification of BBX proteins and the regulatory mechanism of JA-mediated cold stress tolerance.
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Affiliation(s)
- Jian-Ping An
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Xiao-Fei Wang
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Xiao-Wei Zhang
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Chun-Xiang You
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Yu-Jin Hao
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
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Ponnu J, Hoecker U. Illuminating the COP1/SPA Ubiquitin Ligase: Fresh Insights Into Its Structure and Functions During Plant Photomorphogenesis. FRONTIERS IN PLANT SCIENCE 2021; 12:662793. [PMID: 33841486 PMCID: PMC8024647 DOI: 10.3389/fpls.2021.662793] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 03/04/2021] [Indexed: 05/07/2023]
Abstract
CONSTITUTIVE PHOTOMORPHOGENIC 1 functions as an E3 ubiquitin ligase in plants and animals. Discovered originally in Arabidopsis thaliana, COP1 acts in a complex with SPA proteins as a central repressor of light-mediated responses in plants. By ubiquitinating and promoting the degradation of several substrates, COP1/SPA regulates many aspects of plant growth, development and metabolism. In contrast to plants, human COP1 acts as a crucial regulator of tumorigenesis. In this review, we discuss the recent important findings in COP1/SPA research including a brief comparison between COP1 activity in plants and humans.
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Liu C, Zhang Q, Zhu H, Cai C, Li S. Characterization of Mungbean CONSTANS-LIKE Genes and Functional Analysis of CONSTANS-LIKE 2 in the Regulation of Flowering Time in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2021; 12:608603. [PMID: 33613600 PMCID: PMC7890258 DOI: 10.3389/fpls.2021.608603] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 01/11/2021] [Indexed: 05/05/2023]
Abstract
CONSTANS-LIKE (COL) genes play important roles in the regulation of plant growth and development, and they have been analyzed in many plant species. However, few studies have examined COL genes in mungbean (Vigna radiata). In this study, we identified and characterized 31 mungbean genes whose proteins contained B-Box domains. Fourteen were designated as VrCOL genes and were distributed on 7 of the 11 mungbean chromosomes. Based on their phylogenetic relationships, VrCOLs were clustered into three groups (I, II, and III), which contained 4, 6, and 4 members, respectively. The gene structures and conserved motifs of the VrCOL genes were analyzed, and two duplicated gene pairs, VrCOL1/VrCOL2 and VrCOL8/VrCOL9, were identified. A total of 82 cis-acting elements were found in the VrCOL promoter regions, and the numbers and types of cis-acting elements in each VrCOL promoter region differed. As a result, the expression patterns of VrCOLs varied in different tissues and throughout the day under long-day and short-day conditions. Among these VrCOL genes, VrCOL2 showed a close phylogenetic relationship with Arabidopsis thaliana CO and displayed daily oscillations in expression under short-day conditions but not long-day conditions. In addition, overexpression of VrCOL2 accelerated flowering in Arabidopsis under short-day conditions by affecting the expression of the flowering time genes AtFT and AtTSF. Our study lays the foundation for further investigation of VrCOL gene functions.
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Affiliation(s)
- Chenyang Liu
- Key Laboratory of Plant Biotechnology in Universities of Shandong Province, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Qianqian Zhang
- Key Laboratory of Plant Biotechnology in Universities of Shandong Province, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Hong Zhu
- College of Agronomy, Qingdao Agricultural University, Qingdao, China
| | - Chunmei Cai
- Key Laboratory of Plant Biotechnology in Universities of Shandong Province, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Shuai Li
- Key Laboratory of Plant Biotechnology in Universities of Shandong Province, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
- *Correspondence: Shuai Li,
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30
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Molesini B, Dusi V, Pennisi F, Di Sansebastiano GP, Zanzoni S, Manara A, Furini A, Martini F, Rotino GL, Pandolfini T. TCMP-2 affects tomato flowering and interacts with BBX16, a homolog of the arabidopsis B-box MiP1b. PLANT DIRECT 2020; 4:e00283. [PMID: 33204936 PMCID: PMC7648202 DOI: 10.1002/pld3.283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/03/2020] [Accepted: 10/06/2020] [Indexed: 05/06/2023]
Abstract
Flowering and fruiting are processes subject to complex control by environmental and endogenous signals. Endogenous signals comprise, besides classical phytohormones, also signaling peptides and miniproteins. Tomato cystine-knot miniproteins (TCMPs), which belong to a Solanaceous-specific group of Cys-rich protein family, have been recently involved in fruit development. TCMP-1 and TCMP-2 display a highly modulated expression pattern during flower and fruit development. A previous study reported that a change in the ratio of the two TCMPs affects the timing of fruit production. In this work, to investigate TCMP-2 mode of action, we searched for its interacting partners. One of the interactors identified by a yeast two hybrid screen, was the B-box domain-containing protein 16 (SlBBX16), whose closest homolog is the Arabidopsis microProtein 1b implicated in flowering time control. We demonstrated the possibility for the two proteins to interact in vivo in tobacco epidermal cells. Arabidopsis plants ectopically overexpressing the TCMP-2 exhibited an increased level of FLOWERING LOCUS T (FT) mRNA and anticipated flowering. Similarly, in previously generated transgenic tomato plants with increased TCMP-2 expression in flower buds, we observed an augmented expression of SINGLE-FLOWER TRUSS gene, the tomato ortholog of FT, whereas the expression of the antiflorigen SELF-PRUNING was unchanged. Consistently, these transgenic plants showed alterations in the flowering pattern, with an accelerated termination of the sympodial units. Overall, our study reveals a novel function for TCMP-2 as regulatory factor that might integrate, thanks to its capacity to interact with SlBBX16, into the signaling pathways that control flowering, and converge toward florigen regulation.
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Affiliation(s)
| | - Valentina Dusi
- Department of BiotechnologyUniversity of VeronaVeronaItaly
| | | | | | - Serena Zanzoni
- Centro Piattaforme TecnologicheUniversity of VeronaVeronaItaly
| | - Anna Manara
- Department of BiotechnologyUniversity of VeronaVeronaItaly
| | | | - Flavio Martini
- Department of BiotechnologyUniversity of VeronaVeronaItaly
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31
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Song Z, Yan T, Liu J, Bian Y, Heng Y, Lin F, Jiang Y, Wang Deng X, Xu D. BBX28/BBX29, HY5 and BBX30/31 form a feedback loop to fine-tune photomorphogenic development. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 104:377-390. [PMID: 32654323 DOI: 10.1111/tpj.14929] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 06/28/2020] [Accepted: 07/06/2020] [Indexed: 05/23/2023]
Abstract
Light is one of the key environmental cues controlling photomorphogenic development in plants. A group of B-box (BBX) proteins play critical roles in this developmental process through diverse regulatory mechanisms. In this study we report that BBX29 acts as a negative regulator of light signaling. BBX29 interacts with CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1) and undergoes COP1-mediated degradation in the dark. Mutant seedlings with loss of BBX29 function show shortened hypocotyls, while transgenic plants overexpressing BBX29 display elongated hypocotyls in the light. Both BBX28 and BBX29 interfere with the binding of ELONGATED HYPOCOTYL 5 (HY5) to the promoters of BBX30 and BBX31, consequently leading to the upregulation of their transcript levels. BBX30 and BBX31 associate with the promoter regions of BBX28 and BBX29, which in turn promotes the expression of these genes. Taken together, this study reveals a transcriptional feedback loop consisting of BBX28, BBX29, BBX30, BBX31, and HY5 that serves to fine-tune photomorphogenesis in response to light in plants.
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Affiliation(s)
- Zhaoqing Song
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Tingting Yan
- Department of Biology, Institute of Plant and Food Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jiujie Liu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yeting Bian
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yueqin Heng
- Department of Biology, Institute of Plant and Food Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Fang Lin
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yan Jiang
- Department of Biology, Institute of Plant and Food Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xing Wang Deng
- Department of Biology, Institute of Plant and Food Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
- State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, School of Advanced Agriculture Sciences and School of Life Sciences, Peking University, Beijing, 100871, China
| | - Dongqing Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
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32
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Lyu G, Li D, Li S. Bioinformatics analysis of BBX family genes and its response to UV-B in Arabidopsis thaliana. PLANT SIGNALING & BEHAVIOR 2020; 15:1782647. [PMID: 32552524 PMCID: PMC8550283 DOI: 10.1080/15592324.2020.1782647] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/09/2020] [Accepted: 05/11/2020] [Indexed: 05/20/2023]
Abstract
The B-box proteins (BBXs) are a family of zinc finger proteins containing one/two B-box domain(s), which play important roles in plant growth and development. Though the Arabidopsis thaliana BBX family genes have been identified and named, no systematic study has taken on BBX family genes involved in the regulation of UV-B induced photomorphogenesis in Arabidopsis thaliana. In our previous report, BBX24/STO was demonstrated to be a negative regulator in UV-B signaling pathway in Arabidopsis. In the present study, the total 32 BBX family genes from Arabidopsis were analyzed, including their structures, conserved domains, phylogenetic relationships, promoter cis-regulatory elements, expression patterns under UV-B radiation. The expression profile of GEO Datasets (GSE117199) related to UV-B in NCBI database was analyzed. qRT-PCR was used to validate the expression profile of several BBX genes in Arabidopsis treated with UV-B. The promoters of AtBBXs contained cis-acting elements that respond to light and hormones, including ethylene, auxin (IAA), abscisic acid (ABA), gibberellin (GA) and methyl jasmonate (MeJA). BBX24 and BBX25 were collinear blocks, suggesting that BBX25 may also be involved in UV-B signal transduction. Expression profile analysis and qRT-PCR validation showed that UV-B induced up-regulation of BBX1, BBX7, BBX20, BBX25 and BBX32, suggesting that AtBBXs were mainly involved in UV-B photomorphogenesis. It is predicted that BBX1, BBX7, BBX20 and BBX25 may be new members in response to UV-B signaling.
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Affiliation(s)
- Guizhen Lyu
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, School of Life Science, South China Normal University, Guangzhou, China
| | - Dongbing Li
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, School of Life Science, South China Normal University, Guangzhou, China
| | - Shaoshan Li
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, School of Life Science, South China Normal University, Guangzhou, China
- CONTACT Shaoshan Li Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, School of Life Science, South China Normal University, Guangzhou510631, China
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33
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Song Z, Bian Y, Liu J, Sun Y, Xu D. B-box proteins: Pivotal players in light-mediated development in plants. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:1293-1309. [PMID: 32237198 DOI: 10.1111/jipb.12935] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/25/2020] [Indexed: 05/05/2023]
Abstract
Light signals mediate a number of physiological and developmental processes in plants, such as flowering, photomorphogenesis, and pigment accumulation. Emerging evidence has revealed that a group of B-box proteins (BBXs) function as central players in these light-mediated developmental processes. B-box proteins are a class of zinc-coordinated transcription factors or regulators that not only directly mediate the transcription of target genes but also interact with various other factors to create a complex regulatory network involved in the precise control of plant growth and development. This review summarizes and highlights the recent findings concerning the critical regulatory functions of BBXs in photoperiodic flowering, light signal transduction and light-induced pigment accumulation and their molecular modes of action at the transcriptional and post-translational levels in plants.
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Affiliation(s)
- Zhaoqing Song
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yeting Bian
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiujie Liu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuting Sun
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dongqing Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
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34
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Wen S, Zhang Y, Deng Y, Chen G, Yu Y, Wei Q. Genomic identification and expression analysis of the BBX transcription factor gene family in Petunia hybrida. Mol Biol Rep 2020; 47:6027-6041. [PMID: 32725605 DOI: 10.1007/s11033-020-05678-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/19/2020] [Indexed: 11/28/2022]
Abstract
The B-box proteins (BBXs) are a class of zinc finger transcription factors containing one or two B-BOX domains that play important roles in plant growth, development and stress response. The petunia (Petunia hybrida) is a model ornamental plant, and its draft genome has been published. However, no systematic study of the BBX gene family in Petunia has been reported. In this study, a total of 28 BBX members from the Petunia genome were identified. We performed analyses of their phylogenetic relationships, structures, conserved motifs, promoter regions, and expression patterns. Based on the phylogenetic relationship, the PhBBXs were divided into six groups. Analysis of the gene structures and conserved motifs further confirmed the closer relationships in each group. Based on the RNA-seq data, the transcript abundance of PhBBXs in different tissues were divided into two major groups. The analysis of cis-elements showed that many stress responsive elements appeared in the promoter region of most PhBBX genes. The stress response patterns of PhBBXs were detected under drought, salinity, cold and heat treatments. Based on the RNA-seq data, we found that 3 genes responded to drought, 8 genes responded to salt, 18 genes responded to cold, and 15 genes responded to heat. In conclusion, this study may facilitate further functional studies of BBXs in Petunia.
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Affiliation(s)
- Shiyun Wen
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China
| | - Yue Zhang
- Non-timber Forestry Research and Development Center, Chinese Academy of Forestry, Zhengzhou, 450003, China.,Key Laboratory of Non-timber Forest Germplasm Enhancement & Utilization of National Forestry and Grassland Administration, Zhengzhou, 450003, China
| | - Ying Deng
- College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Guoju Chen
- College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Yixun Yu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China
| | - Qian Wei
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China.
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35
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Zhang H, Zhang Q, Zhai H, Gao S, Yang L, Wang Z, Xu Y, Huo J, Ren Z, Zhao N, Wang X, Li J, Liu Q, He S. IbBBX24 Promotes the Jasmonic Acid Pathway and Enhances Fusarium Wilt Resistance in Sweet Potato. THE PLANT CELL 2020; 32:1102-1123. [PMID: 32034034 PMCID: PMC7145486 DOI: 10.1105/tpc.19.00641] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 01/22/2020] [Accepted: 01/31/2020] [Indexed: 05/05/2023]
Abstract
Cultivated sweet potato (Ipomoea batatas) is an important source of food for both humans and domesticated animals. Here, we show that the B-box (BBX) family transcription factor IbBBX24 regulates the jasmonic acid (JA) pathway in sweet potato. When IbBBX24 was overexpressed in sweet potato, JA accumulation increased, whereas silencing this gene decreased JA levels. RNA sequencing analysis revealed that IbBBX24 modulates the expression of genes involved in the JA pathway. IbBBX24 regulates JA responses by antagonizing the JA signaling repressor IbJAZ10, which relieves IbJAZ10's repression of IbMYC2, a JA signaling activator. IbBBX24 binds to the IbJAZ10 promoter and activates its transcription, whereas it represses the transcription of IbMYC2 The interaction between IbBBX24 and IbJAZ10 interferes with IbJAZ10's repression of IbMYC2, thereby promoting the transcriptional activity of IbMYC2. Overexpressing IbBBX24 significantly increased Fusarium wilt disease resistance, suggesting that JA responses play a crucial role in regulating Fusarium wilt resistance in sweet potato. Finally, overexpressing IbBBX24 led to increased yields in sweet potato. Together, our findings indicate that IbBBX24 plays a pivotal role in regulating JA biosynthesis and signaling and increasing Fusarium wilt resistance and yield in sweet potato, thus providing a candidate gene for developing elite crop varieties with enhanced pathogen resistance but without yield penalty.
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Affiliation(s)
- Huan Zhang
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis & Utilization and Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Qian Zhang
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis & Utilization and Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Hong Zhai
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis & Utilization and Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Shaopei Gao
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis & Utilization and Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Li Yang
- State Key Laboratory of Protein and Plant Gene Research, The Peking-Tsinghua Center for Life Sciences, School of Advanced Agricultural Sciences and School of Life Sciences, Peking University, 100871 Beijing, China
| | - Zhen Wang
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis & Utilization and Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yuetong Xu
- Department of Crop Genomics and Bioinformatics, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jinxi Huo
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis & Utilization and Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Zhitong Ren
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis & Utilization and Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Ning Zhao
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis & Utilization and Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xiangfeng Wang
- Department of Crop Genomics and Bioinformatics, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jigang Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Qingchang Liu
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis & Utilization and Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
| | - Shaozhen He
- Key Laboratory of Sweet Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis & Utilization and Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China
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36
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Ou C, Zhang X, Wang F, Zhang L, Zhang Y, Fang M, Wang J, Wang J, Jiang S, Zhang Z. A 14 nucleotide deletion mutation in the coding region of the PpBBX24 gene is associated with the red skin of "Zaosu Red" pear ( Pyrus pyrifolia White Pear Group): a deletion in the PpBBX24 gene is associated with the red skin of pear. HORTICULTURE RESEARCH 2020; 7:39. [PMID: 32257225 PMCID: PMC7109114 DOI: 10.1038/s41438-020-0259-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/15/2020] [Accepted: 01/29/2020] [Indexed: 05/02/2023]
Abstract
Red skin is an important quality trait for pear fruits and is determined by the concentration and composition of anthocyanins. The regulatory mechanism underlying anthocyanin accumulation is a popular topic in fruit research. Red mutants are ideal materials for studying the molecular mechanism of color diversity in pear. Although several red pear mutants have been cultivated and are in production, no exact locus containing the responsible genetic mutation has been identified. In this study, by combining the bulked segregant analysis with whole-genome sequencing, we identified a 14 nucleotide deletion mutation in the coding region of the PpBBX24 gene from the red pear mutant "Zaosu Red". We further verified that the deletion was present only in the red mutant of "Zaosu" and in its red offspring, which was different from that which occurred in other red pear fruits. This deletion results in a coding frame shift such that there is an early termination of the PpBBX24 gene and loss of key NLS and VP domains from PpBBX24. The lost domains may reduce or alter the normal function of PpBBX24. In addition, we found that the transcript levels of the PpMYB10 and PpHY5 genes in red samples were significantly higher than those in green samples, whereas the results for the normal-type PpBBX24 gene were the opposite. We ultimately revealed that the 14 nucleotide deletion mutation in the coding region of the PpBBX24 gene is associated with the red skin of the "Zaosu Red" pear. This finding of somatic mutational events will be helpful for breeding new red pear cultivars and for understanding the regulatory mechanisms involved in pear skin pigmentation.
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Affiliation(s)
- Chunqing Ou
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110161 Liaoning PR China
- Key Laboratory of Horticultural Crops Germplasm Resources Utilization, Ministry of Agriculture, Research Institute of Pomology, Chinese Academy of Agricultural Sciences, Xingcheng, 125100 Liaoning PR China
| | - Xiaoli Zhang
- Xinjiang Fruit Science Experiment Station, Ministry of Agriculture and Rural Affairs, Horticultural Crops Research Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091 Xinjiang PR China
| | - Fei Wang
- Key Laboratory of Horticultural Crops Germplasm Resources Utilization, Ministry of Agriculture, Research Institute of Pomology, Chinese Academy of Agricultural Sciences, Xingcheng, 125100 Liaoning PR China
| | - Liyi Zhang
- Key Laboratory of Horticultural Crops Germplasm Resources Utilization, Ministry of Agriculture, Research Institute of Pomology, Chinese Academy of Agricultural Sciences, Xingcheng, 125100 Liaoning PR China
| | - Yanjie Zhang
- Key Laboratory of Horticultural Crops Germplasm Resources Utilization, Ministry of Agriculture, Research Institute of Pomology, Chinese Academy of Agricultural Sciences, Xingcheng, 125100 Liaoning PR China
| | - Ming Fang
- Key Laboratory of Horticultural Crops Germplasm Resources Utilization, Ministry of Agriculture, Research Institute of Pomology, Chinese Academy of Agricultural Sciences, Xingcheng, 125100 Liaoning PR China
| | - Jiahong Wang
- Biomarker Technologies Corporation, Beijing, 101300 PR China
| | - Jixun Wang
- Xinjiang Fruit Science Experiment Station, Ministry of Agriculture and Rural Affairs, Horticultural Crops Research Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091 Xinjiang PR China
| | - Shuling Jiang
- Key Laboratory of Horticultural Crops Germplasm Resources Utilization, Ministry of Agriculture, Research Institute of Pomology, Chinese Academy of Agricultural Sciences, Xingcheng, 125100 Liaoning PR China
| | - Zhihong Zhang
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110161 Liaoning PR China
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Wei H, Wang P, Chen J, Li C, Wang Y, Yuan Y, Fang J, Leng X. Genome-wide identification and analysis of B-BOX gene family in grapevine reveal its potential functions in berry development. BMC PLANT BIOLOGY 2020; 20:72. [PMID: 32054455 PMCID: PMC7020368 DOI: 10.1186/s12870-020-2239-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 01/03/2020] [Indexed: 05/26/2023]
Abstract
BACKGROUND The B-BOX (BBX) proteins are the class of zinc-finger transcription factors and can regulate plant growth, development, and endure stress response. In plants, the BBX gene family has been identified in Arabidopsis, rice, and tomato. However, no systematic analysis of BBX genes has been undertaken in grapevine. RESULTS In this study, 24 grapevine BBX (VvBBX) genes were identified by comprehensive bioinformatics analysis. Subsequently, the chromosomal localizations, gene structure, conserved domains, phylogenetic relationship, gene duplication, and cis-acting elements were analyzed. Phylogenetic analysis divided VvBBX genes into five subgroups. Numerous cis-acting elements related to plant development, hormone and/or stress responses were identified in the promoter of the VvBBX genes. The tissue-specific expressional dynamics of VvBBX genes demonstrated that VvBBXs might play important role in plant growth and development. The transcript analysis from transcriptome data and qRT-PCR inferred that 11 VvBBX genes were down-regulated in different fruit developmental stages, while three VvBBX genes were up-regulated. It is also speculated that VvBBX genes might be involved in multiple hormone signaling (ABA, ethylene, GA3, and CPPU) as transcriptional regulators to modulate berry development and ripening. VvBBX22 seems to be responsive to multiple hormone signaling, including ABA, ethylene GA3, and CPPU. Some VvBBX genes were strongly induced by Cu, salt, waterlogging, and drought stress treatment. Furthermore, the expression of VvBBX22 proposed its involvement in multiple functions, including leaf senescence, abiotic stress responses, fruit development, and hormone response. CONCLUSIONS Our results will provide the reference for functional studies of BBX gene family, and highlight its functions in grapevine berry development and ripening. The results will help us to better understand the complexity of the BBX gene family in abiotic stress tolerance and provide valuable information for future functional characterization of specific genes in grapevine.
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Affiliation(s)
- Hongru Wei
- Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, College of Horticulture, Qingdao Agricultural University, Qingdao, 266109 People’s Republic of China
| | - Peipei Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jianqing Chen
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Changjun Li
- Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, College of Horticulture, Qingdao Agricultural University, Qingdao, 266109 People’s Republic of China
| | - Yongzhang Wang
- Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, College of Horticulture, Qingdao Agricultural University, Qingdao, 266109 People’s Republic of China
| | - Yongbing Yuan
- Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, College of Horticulture, Qingdao Agricultural University, Qingdao, 266109 People’s Republic of China
| | - Jinggui Fang
- College of Horticulture, Nanjing Agricultural University, Nanjing, 210095 China
- Institute of Grape Science and Engineering, College of Horticulture, Qingdao Agricultural University, Qingdao, 266109 People’s Republic of China
| | - Xiangpeng Leng
- Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, College of Horticulture, Qingdao Agricultural University, Qingdao, 266109 People’s Republic of China
- Institute of Grape Science and Engineering, College of Horticulture, Qingdao Agricultural University, Qingdao, 266109 People’s Republic of China
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Ke YT, Lin KF, Gu CH, Yeh CH. Molecular Characterization and Expression Profile of PaCOL1, a CONSTANS-like Gene in Phalaenopsis Orchid. PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9010068. [PMID: 31947959 PMCID: PMC7020484 DOI: 10.3390/plants9010068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/30/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
CONSTANS (CO) and CONSTANS-like (COL) genes play important roles in coalescing signals from photoperiod and temperature pathways. However, the mechanism of CO and COLs involved in regulating the developmental stage transition and photoperiod/temperature senescing remains unclear. In this study, we identified a COL ortholog gene from the Taiwan native orchid Phalaenopsis aphrodite. The Phalaenopsis aphrodite CONSTANS-like 1 (PaCOL1) belongs to the B-box protein family and functions in the nucleus and cytosol. Expression profile analysis of Phalaenopsis aphrodite revealed that PaCOL1 was significantly expressed in leaves, but its accumulation was repressed during environmental temperature shifts. We found a differential profile for PaCOL1 accumulation, with peak accumulation at late afternoon and at the middle of the night. Arabidopsis with PaCOL1 overexpression showed earlier flowering under short-day (SD) conditions (8 h/23 °C light and 16 h/23 °C dark) but similar flowering time under long-day (LD) conditions (16 h/23 °C light and 8 h/23 °C dark). Transcriptome sequencing revealed several genes upregulated in PaCOL1-overexpressing Arabidopsis plants that were previously involved in flowering regulation of the photoperiod pathway. Yeast two-hybrid (Y2H) analysis and bimolecular fluorescence complementation (BiFC) analysis revealed that PaCOL1 could interact with a crucial clock-associated regulator, AtCCA1, and a flowering repressor, AtFLC. Furthermore, expressing PaCOL1 in cca1.lhy partially reversed the mutant flowering time under photoperiod treatment, which confirms the role of PaCOL1 function in the rhythmic associated factors for modulating flowering.
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An JP, Wang XF, Espley RV, Lin-Wang K, Bi SQ, You CX, Hao YJ. An Apple B-Box Protein MdBBX37 Modulates Anthocyanin Biosynthesis and Hypocotyl Elongation Synergistically with MdMYBs and MdHY5. PLANT & CELL PHYSIOLOGY 2020; 61:130-143. [PMID: 31550006 DOI: 10.1093/pcp/pcz185] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 09/13/2019] [Indexed: 05/18/2023]
Abstract
As an important environment factor, light affects plant growth and development throughout life. B-BOX (BBX) proteins play key roles in the regulation of light signaling. Although the multiple roles of BBX proteins have been extensively studied in Arabidopsis, the research in apple is much less extensive. In this study, we systematically characterized the negative role of an apple BBX protein MdBBX37 in light signaling, including inhibiting anthocyanin biosynthesis and promoting hypocotyl elongation. We found that MdBBX37 interacted with MdMYB1 and MdMYB9, two key positive regulators of anthocyanin biosynthesis, and inhibited the binding of those two proteins to their target genes and, therefore, negatively regulated anthocyanin biosynthesis. In addition, MdBBX37 directly bound to the promoter of MdHY5, a positive regulator of light signaling, and suppressed its expression, and thus relieved MdHY5-mediated hypocotyl inhibition. Taken together, our investigations suggest that MdBBX37 is a negative regulator of light signaling in apple. Our study will provide reference for further study on the functions of BBX proteins in apple.
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Affiliation(s)
- Jian-Ping An
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Xiao-Fei Wang
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Richard V Espley
- The New Zealand Institute for Plant and Food Research Limited, Mt Albert, Auckland, New Zealand
| | - Kui Lin-Wang
- The New Zealand Institute for Plant and Food Research Limited, Mt Albert, Auckland, New Zealand
| | - Si-Qi Bi
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Chun-Xiang You
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Yu-Jin Hao
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
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Ping Q, Cheng P, Huang F, Ren L, Cheng H, Guan Z, Fang W, Chen S, Chen F, Jiang J. The heterologous expression in Arabidopsis thaliana of a chrysanthemum gene encoding the BBX family transcription factor CmBBX13 delays flowering. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 144:480-487. [PMID: 31655346 DOI: 10.1016/j.plaphy.2019.10.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 10/10/2019] [Accepted: 10/15/2019] [Indexed: 05/22/2023]
Abstract
Members of the B Box (BBX) family of proteins are known to be important for directing the growth and development of the Arabidopsis thaliana plant. Here, an analysis of a newly isolated chrysanthemum gene encoding a BBX family member implied that it was a likely ortholog of AtBBX13. The gene (designated CmBBX13) was most actively transcribed in the leaves and stem apex. CmBBX13 transcription was arrhythmic under either continuous darkness or continuous light, so the observed diurnal variation in its transcription appeared not to respond to the circadian clock. The outcome of transiently expressing CmBBX13 in onion epidermal cells suggested that the CmBBX13 protein localized to the nucleus. Both a yeast- and a protoplast-based assay showed that the protein has transactivational activity. When CmBBX13 was constitutively expressed in A. thaliana, flowering was delayed under both short and long day conditions. The presence of the transgene also down-regulated a number of genes known to promote flowering, including APETALA1 (AP1), SUPPRESSOR OF OVEREXPRESSION OF CO 1 (SOC1), FLOWERING LOCUS T (FT) and FD, while simultaneously up-regulating the floral inhibitor-encoding genes FLOWERING LOCUS C (FLC) and TARGET OF EAT 2 (TOE2). The data suggested that CmBBX13 regulates flowering time independently of the photoperiod pathway.
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Affiliation(s)
- Qi Ping
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, The Key Laboratory of Landscaping, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Peilei Cheng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, The Key Laboratory of Landscaping, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Fei Huang
- Shanghai Center for Plant Stress Biology, Chinese Academy of Sciences, Shanghai, 201602, China.
| | - Liping Ren
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, The Key Laboratory of Landscaping, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Hua Cheng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, The Key Laboratory of Landscaping, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Zhiyong Guan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, The Key Laboratory of Landscaping, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Weimin Fang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, The Key Laboratory of Landscaping, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Sumei Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, The Key Laboratory of Landscaping, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Fadi Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, The Key Laboratory of Landscaping, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Jiafu Jiang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, The Key Laboratory of Landscaping, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
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Lau K, Podolec R, Chappuis R, Ulm R, Hothorn M. Plant photoreceptors and their signaling components compete for COP1 binding via VP peptide motifs. EMBO J 2019; 38:e102140. [PMID: 31304983 PMCID: PMC6745501 DOI: 10.15252/embj.2019102140] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/29/2019] [Accepted: 06/07/2019] [Indexed: 12/31/2022] Open
Abstract
Plants sense different parts of the sun's light spectrum using distinct photoreceptors, which signal through the E3 ubiquitin ligase COP1. Here, we analyze why many COP1‐interacting transcription factors and photoreceptors harbor sequence‐divergent Val‐Pro (VP) motifs that bind COP1 with different binding affinities. Crystal structures of the VP motifs of the UV‐B photoreceptor UVR8 and the transcription factor HY5 in complex with COP1, quantitative binding assays, and reverse genetic experiments together suggest that UVR8 and HY5 compete for COP1. Photoactivation of UVR8 leads to high‐affinity cooperative binding of its VP motif and its photosensing core to COP1, preventing COP1 binding to its substrate HY5. UVR8–VP motif chimeras suggest that UV‐B signaling specificity resides in the UVR8 photoreceptor core. Different COP1–VP peptide motif complexes highlight sequence fingerprints required for COP1 targeting. The blue‐light photoreceptors CRY1 and CRY2 also compete with transcription factors for COP1 binding using similar VP motifs. Thus, our work reveals that different photoreceptors and their signaling components compete for COP1 via a conserved mechanism to control different light signaling cascades.
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Affiliation(s)
- Kelvin Lau
- Department of Botany and Plant Biology, Section of Biology, Faculty of Sciences, University of Geneva, Geneva, Switzerland
| | - Roman Podolec
- Department of Botany and Plant Biology, Section of Biology, Faculty of Sciences, University of Geneva, Geneva, Switzerland.,Institute of Genetics and Genomics of Geneva (iGE3), University of Geneva, Geneva, Switzerland
| | - Richard Chappuis
- Department of Botany and Plant Biology, Section of Biology, Faculty of Sciences, University of Geneva, Geneva, Switzerland
| | - Roman Ulm
- Department of Botany and Plant Biology, Section of Biology, Faculty of Sciences, University of Geneva, Geneva, Switzerland.,Institute of Genetics and Genomics of Geneva (iGE3), University of Geneva, Geneva, Switzerland
| | - Michael Hothorn
- Department of Botany and Plant Biology, Section of Biology, Faculty of Sciences, University of Geneva, Geneva, Switzerland
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Bai B, Lu N, Li Y, Guo S, Yin H, He Y, Sun W, Li W, Xie X. OsBBX14 promotes photomorphogenesis in rice by activating OsHY5L1 expression under blue light conditions. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 284:192-202. [PMID: 31084872 DOI: 10.1016/j.plantsci.2019.04.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 04/04/2019] [Accepted: 04/18/2019] [Indexed: 05/04/2023]
Abstract
In rice, OsBBX14, a B-box (BBX) transcription factor, reportedly delays heading. Here, we revealed that OsBBX14 positively regulates rice photomorphogenesis. The OsBBX14-overexpressing (OsBBX14-OX) seedlings were hypersensitive to light, especially blue light, and exhibited dwarfism, while the OsBBX14 knock-out plants (osbbx14) were taller than wild-type plants under blue light. Histological analyses indicated that the observed dwarfism was mainly due to decreased cell length. Additionally, OsBBX14 abundance (mRNA and protein levels) was influenced by different light wavelengths in a time-dependent manner. The expression levels of HY5Ls (LONG HYPOCOTYL 5 LIKE) and ELIPs (EARLY LIGHT-INDUCIBLE PROTEIN) genes, whose Arabidopsis thaliana homologs function as positive regulators in the light signaling pathway, were significantly upregulated in OsBBX14-OX lines. In contrast, the expression of genes related to cell wall organization and dwarfism was downregulated in OsBBX14-OX lines. Chromatin immunoprecipitation (ChIP) assays confirmed that OsBBX14 binds to the T/G-box of HY5L1 (LONG HYPOCOTYL 5 LIKE 1) promoter. LUC complementation imaging (LCI) results suggested that OsBBX14 had physical interaction with OsCRY2 protein. Collectively, in response to blue light, OsBBX14 promotes photomorphogenesis, probably by directly or indirectly regulating the expression of HY5L1 or other genes related to cell wall organization and dwarfism.
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Affiliation(s)
- Bo Bai
- Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, PR China.
| | - Nannan Lu
- Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, PR China; College of Life Sciences, Yantai University, Yantai 264005, PR China.
| | - Yaping Li
- Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, PR China; College of Life Sciences, Shandong Normal University, Jinan 250014, PR China.
| | - Shanli Guo
- College of Life Sciences, Yantai University, Yantai 264005, PR China.
| | - Haibo Yin
- College of Life Sciences, Yantai University, Yantai 264005, PR China.
| | - Yanan He
- Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, PR China.
| | - Wei Sun
- Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, PR China.
| | - Wen Li
- Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, PR China.
| | - Xianzhi Xie
- Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, PR China.
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Fang H, Dong Y, Yue X, Chen X, He N, Hu J, Jiang S, Xu H, Wang Y, Su M, Zhang J, Zhang Z, Wang N, Chen X. MdCOL4 Interaction Mediates Crosstalk Between UV-B and High Temperature to Control Fruit Coloration in Apple. PLANT & CELL PHYSIOLOGY 2019; 60:1055-1066. [PMID: 30715487 DOI: 10.1093/pcp/pcz023] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 01/28/2019] [Indexed: 05/04/2023]
Abstract
In many plants, anthocyanin biosynthesis is affected by environmental conditions. Ultraviolet-B (UV-B) radiation promotes anthocyanin accumulation and fruit coloration in apple skin, whereas high temperature suppresses these processes. In this study, we characterized a B-box transcription factor, MdCOL4, from 'Fuji' apple, and identified its role in anthocyanin biosynthesis by overexpressing its encoding gene in apple red callus. The expression of MdCOL4 was reduced by UV-B, but promoted by high temperature. We explored the regulatory relationship between heat shock transcription factors (HSFs) and MdCOL4, and found that MdHSF3b and MdHSF4a directly bound to the heat shock element cis-element of the MdCOL4 promoter. MdCOL4 interacted with MdHY5 to synergistically inhibit the expression of MdMYB1, and MdCOL4 directly bound to the promoters of MdANS and MdUFGT, which encode genes in the anthocyanin biosynthetic pathway, to suppress their expression. Our findings shed light on the molecular mechanism by which MdCOL4 suppresses anthocyanin accumulation in apple skin under UV-B and high temperature.
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Affiliation(s)
- Hongcheng Fang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Yuhui Dong
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Xuanxuan Yue
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Xiaoliu Chen
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Naibo He
- National Oceangraphic Center, Qingdao, China
| | - Jiafei Hu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Shenghui Jiang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Haifeng Xu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Yicheng Wang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Mengyu Su
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Jing Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Zongying Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Nan Wang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
| | - Xuesen Chen
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
- College of Horticulture Sciences, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, China
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Höll J, Lindner S, Walter H, Joshi D, Poschet G, Pfleger S, Ziegler T, Hell R, Bogs J, Rausch T. Impact of pulsed UV-B stress exposure on plant performance: How recovery periods stimulate secondary metabolism while reducing adaptive growth attenuation. PLANT, CELL & ENVIRONMENT 2019; 42:801-814. [PMID: 30049021 DOI: 10.1111/pce.13409] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 07/13/2018] [Accepted: 07/15/2018] [Indexed: 05/20/2023]
Abstract
Upon continuous stress exposure, plants display attenuated metabolic stress responses due to regulatory feedback loops. Here, we have tested the hypothesis that pulsed stress exposure with intervening recovery periods should affect these feedback loops, thereby causing increased accumulation of stress-induced metabolites. The response of Arabidopsis plantlets to continuous UV-B exposure (Cuv ) was compared with that of pulsed UV-B exposure (Puv ). The differential responses to Puv versus Cuv were monitored at the level of gene expression and metabolite accumulation, using wild type (WT) and different mutant lines. In comparison with Cuv , Puv increased sinapyl and flavonol (S + F) content, whereas adaptive growth attenuation was reduced. Furthermore, in a myb4 mutant (AtMYB4, repressor-type R2R3-MYB transcription factor), the S + F content was increased only for Cuv , but not beyond the level for Puv observed in WT. These observations and the ability of AtMYB4 to repress AtMYB12/AtMYB111-mediated activation of target gene promoters (pCHS and pFLS) indicate that the increase of S + F content after Puv observed in WT plants results from reduced feedback inhibition by AtMYB4. The results support the notion that stress-induced metabolic changes not necessarily cause a growth penalty. Furthermore, the observed Puv -induced increase in flavonol accumulation may stimulate reevaluation of commercial plant production practices.
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Affiliation(s)
- Janine Höll
- Centre for Organismal Studies Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Sonja Lindner
- Centre for Organismal Studies Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Hannah Walter
- Centre for Organismal Studies Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Drishti Joshi
- Centre for Organismal Studies Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Gernot Poschet
- Centre for Organismal Studies Heidelberg, Heidelberg University, Heidelberg, Germany
- Metabolomics Core Technology Platform, Heidelberg University, Heidelberg, Germany
| | - Sina Pfleger
- Centre for Organismal Studies Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Tobias Ziegler
- Centre for Organismal Studies Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Rüdiger Hell
- Centre for Organismal Studies Heidelberg, Heidelberg University, Heidelberg, Germany
- Metabolomics Core Technology Platform, Heidelberg University, Heidelberg, Germany
| | - Jochen Bogs
- Centre for Organismal Studies Heidelberg, Heidelberg University, Heidelberg, Germany
- Dienstleistungszentrum Ländlicher Raum Rheinpfalz, Viticulture and Enology Group, Neustadt, Germany
- Fachhochschule Bingen, Bingen am Rhein, Germany
| | - Thomas Rausch
- Centre for Organismal Studies Heidelberg, Heidelberg University, Heidelberg, Germany
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Sng NJ, Kolaczkowski B, Ferl RJ, Paul AL. A member of the CONSTANS-Like protein family is a putative regulator of reactive oxygen species homeostasis and spaceflight physiological adaptation. AOB PLANTS 2019; 11:ply075. [PMID: 30705745 PMCID: PMC6348315 DOI: 10.1093/aobpla/ply075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 12/12/2018] [Indexed: 05/20/2023]
Abstract
A feature of the physiological adaptation to spaceflight in Arabidopsis thaliana (Arabidopsis) is the induction of reactive oxygen species (ROS)-associated gene expression. The patterns of ROS-associated gene expression vary among Arabidopsis ecotypes, and the role of ROS signalling in spaceflight acclimation is unknown. What could differences in ROS gene regulation between ecotypes on orbit reveal about physiological adaptation to novel environments? Analyses of ecotype-dependent responses to spaceflight resulted in the elucidation of a previously uncharacterized gene (OMG1) as being ROS-associated. The OMG1 5' flanking region is an active promoter in cells where ROS activity is commonly observed, such as in pollen tubes, root hairs, and in other tissues upon wounding. qRT-PCR analyses revealed that upon wounding on Earth, OMG1 is an apparent transcriptional regulator of MYB77 and GRX480, which are associated with the ROS pathway. Fluorescence-based ROS assays show that OMG1 affects ROS production. Phylogenetic analysis of OMG1 and closely related homologs suggests that OMG1 is a distant, unrecognized member of the CONSTANS-Like protein family, a member that arose via gene duplication early in the angiosperm lineage and subsequently lost its first DNA-binding B-box1 domain. These data illustrate that members of the rapidly evolving COL protein family play a role in regulating ROS pathway functions, and their differential regulation on orbit suggests a role for ROS signalling in spaceflight physiological adaptation.
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Affiliation(s)
- Natasha J Sng
- Plant Molecular and Cellular Biology, University of Florida, Gainesville, FL, USA
| | - Bryan Kolaczkowski
- Microbiology and Cell Science, University of Florida, Gainesville, FL, USA
| | - Robert J Ferl
- Plant Molecular and Cellular Biology, University of Florida, Gainesville, FL, USA
- Horticultural Science Department, University of Florida, Gainesville, FL, USA
- Interdisciplinary Center for Biotechnology Research (ICBR), University of Florida, Gainesville, FL, USA
| | - Anna-Lisa Paul
- Plant Molecular and Cellular Biology, University of Florida, Gainesville, FL, USA
- Horticultural Science Department, University of Florida, Gainesville, FL, USA
- Corresponding author’s e-mail address:
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Shalmani A, Jing XQ, Shi Y, Muhammad I, Zhou MR, Wei XY, Chen QQ, Li WQ, Liu WT, Chen KM. Characterization of B-BOX gene family and their expression profiles under hormonal, abiotic and metal stresses in Poaceae plants. BMC Genomics 2019; 20:27. [PMID: 30626335 PMCID: PMC6327500 DOI: 10.1186/s12864-018-5336-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 11/29/2018] [Indexed: 11/10/2022] Open
Abstract
Background B-box (BBX) proteins play important roles in plant growth regulation and development including photomorphogenesis, photoperiodic regulation of flowering, and responses to biotic and abiotic stresses. Results In the present study we retrieved total 131 BBX members from five Poaceae species including 36 from maize, 30 from rice, 24 from sorghum, 22 from stiff brome, and 19 from Millet. All the BBX genes were grouped into five subfamilies on the basis of their phylogenetic relationships and structural features. The expression profiles of 12 OsBBX genes in different tissues were evaluated through qRT-PCR, and we found that most rice BBX members showed high expression level in the heading stage compared to seedling and booting stages. The expression of OsBBX1, OsBBX2, OsBBX8, OsBBX19, and OsBBX24 was strongly induced by abiotic stresses such as drought, cold and salt stresses. Furthermore, the expression of OsBBX2, OsBBX7, OsBBX17, OsBBX19, and OsBBX24 genes was up-regulated under GA, SA and MeJA hormones at different time points. Similarly, the transcripts level of OsBBX1, OsBBX7, OsBBX8, OsBBX17, and OsBBX19 genes were significantly affected by heavy metals such as Fe, Ni, Cr and Cd. Conclusion Change in the expression pattern of BBX members in response to abiotic, hormone and heavy metal stresses signifies their potential roles in plant growth and development and in response to multivariate stresses. The findings suggest that BBX genes could be used as potential genetic markers for the plants, particularly in functional analysis and determining their roles under multivariate stresses. Electronic supplementary material The online version of this article (10.1186/s12864-018-5336-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Abdullah Shalmani
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Xiu-Qing Jing
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Yi Shi
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Izhar Muhammad
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Meng-Ru Zhou
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Xiao-Yong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Qiong-Qiong Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Wen-Qiang Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Wen-Ting Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100, China
| | - Kun-Ming Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, 712100, China.
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Vaishak KP, Yadukrishnan P, Bakshi S, Kushwaha AK, Ramachandran H, Job N, Babu D, Datta S. The B-box bridge between light and hormones in plants. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 191:164-174. [PMID: 30640143 DOI: 10.1016/j.jphotobiol.2018.12.021] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/23/2018] [Accepted: 12/27/2018] [Indexed: 11/29/2022]
Abstract
Plant development is meticulously modulated by interactions between the surrounding environment and the endogenous phytohormones. Light, as an external signal coordinates with the extensive networks of hormones inside the plant to execute its effects on growth and development. Several proteins in plants have been identified for their crucial roles in mediating light regulated development. Among these are the B-box (BBX) family of transcription factors characterized by the presence of zinc-finger B-box domain in their N-terminal region. In Arabidopsis there are 32 BBX proteins that are divided into five structural groups on the basis of the domains present. Several BBX proteins play important roles in seedling photomorphogenesis, neighbourhood detection and photoperiodic regulation of flowering. There is increasing evidence that besides light signaling BBX proteins also play integral roles in several hormone signaling pathways in plants. Here we attempt to comprehensively integrate the roles of multiple BBX proteins in various light and hormone signaling pathways. We further discuss the role of the BBX proteins in mediating crosstalk between the two signaling pathways to harmonize plant growth and development. Finally, we try to analyse the conservation of BBX genes across species and discuss the role of BBX proteins in regulating economically important traits in crop plants.
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Affiliation(s)
- K P Vaishak
- Plant Cell and Development Biology Lab, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, India; School of Biological Sciences, Indian Institute of Science Education and Research (IISER) Thiruvananthapuram, India
| | - Premachandran Yadukrishnan
- Plant Cell and Development Biology Lab, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, India
| | - Souvika Bakshi
- Plant Cell and Development Biology Lab, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, India
| | - Amit Kumar Kushwaha
- Plant Cell and Development Biology Lab, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, India
| | - Harshil Ramachandran
- Plant Cell and Development Biology Lab, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, India
| | - Nikhil Job
- Plant Cell and Development Biology Lab, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, India
| | - Dion Babu
- Plant Cell and Development Biology Lab, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, India
| | - Sourav Datta
- Plant Cell and Development Biology Lab, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, India.
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Two B-Box Domain Proteins, BBX18 and BBX23, Interact with ELF3 and Regulate Thermomorphogenesis in Arabidopsis. Cell Rep 2018; 25:1718-1728.e4. [DOI: 10.1016/j.celrep.2018.10.060] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 09/25/2018] [Accepted: 10/15/2018] [Indexed: 12/19/2022] Open
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Shalmani A, Fan S, Jia P, Li G, Muhammad I, Li Y, Sharif R, Dong F, Zuo X, Li K, Chen KM, Han M. Genome Identification of B-BOX Gene Family Members in Seven Rosaceae Species and Their Expression Analysis in Response to Flower Induction in Malus domestica. Molecules 2018; 23:molecules23071763. [PMID: 30021984 PMCID: PMC6100437 DOI: 10.3390/molecules23071763] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/13/2018] [Accepted: 07/15/2018] [Indexed: 11/22/2022] Open
Abstract
BBX proteins play important roles in regulating plant growth and development including photomorphogenesis, photoperiodic regulation of flowering, and responses to biotic and abiotic stresses. At present, the genomes of seven Rosaceae fruit species have been fully sequenced. However, little is known about the BBX gene family and their evolutionary history in these Rosaceae species. Therefore, in this study total, 212 BBX genes were investigated from seven Rosaceae species (67 from Malus × domestica, 40 from Pyruscommunis, 22 from Rosa Chinesis, 20 from Prunuspersica, 21 from Fragariavesca, 22 from Prunusavium, and 20 from Rubusoccidentalis). The chemical properties, gene structures, and evolutionary relationships of the BBX genes were also studied. All the BBX genes were grouped into six subfamilies on the basis of their phylogenetic relationships and structural features. Analysis of gene structure, segmental and tandem duplication, gene phylogeny, and tissue-specific expression with the ArrayExpress database showed their diversification in function, quantity, and structure. The expression profiles of 19 MdBBX genes in different tissues were evaluated through qRT-PCR. These genes showed distinct transcription level among the tested tissues (bud, flower, fruit, stem, and leaf). Moreover, expression patterns of 19 MdBBX genes were examined during flowering induction time under flowering-related hormones and treatments (GA3, 6-BA, and sucrose). The expressions of the candidates BBX genes were affected and showed diverse expression profile. Furthermore, changes in response to these flowering-related hormones and treatment specifying their potential involvement in flowering induction. Based on these findings, BBX genes could be used as potential genetic markers for the growth and development of plants particularly in the area of functional analysis, and their involvement in flower induction in fruit plants.
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Affiliation(s)
- Abdullah Shalmani
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China.
| | - Sheng Fan
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Peng Jia
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Guofang Li
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Izhar Muhammad
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China.
| | - Youmei Li
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Rahat Sharif
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Feng Dong
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Xiya Zuo
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Ke Li
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Kun-Ming Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China.
| | - Mingyu Han
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
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Job N, Yadukrishnan P, Bursch K, Datta S, Johansson H. Two B-Box Proteins Regulate Photomorphogenesis by Oppositely Modulating HY5 through their Diverse C-Terminal Domains. PLANT PHYSIOLOGY 2018; 176:2963-2976. [PMID: 29439209 PMCID: PMC5884587 DOI: 10.1104/pp.17.00856] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 01/30/2018] [Indexed: 05/04/2023]
Abstract
The Arabidopsis (Arabidopsis thaliana) BBX family comprises several positive and negative regulators of photomorphogenesis. BBX24, a member of BBX structural group IV, acts as a negative regulator of photomorphogenesis, whereas another member from the same group, BBX21, is a positive regulator. The molecular basis for the functional diversity shown by these related BBX family members is unknown. Using domain-swap lines, we show that the C-terminal regions of BBX24 and BBX21 specify their function. Because both BBX21 and BBX24 work in close association with HY5, we hypothesized that these proteins differentially regulate the levels or activity of HY5 to fulfill their opposite roles. We show that BBX21 can regulate HY5 post-transcriptionally and the two proteins can coordinate to promote photomorphogenesis. By contrast, BBX24 interferes with the binding of HY5 to the promoter of an anthocyanin biosynthetic gene, possibly by heterodimerizing with HY5 and preventing it from binding DNA. Our finding that both BBX21 and BBX24 regulate HY5 activity post-transcriptionally, in opposite ways, suggests that closely related B-box proteins execute contrasting functions through differential regulation of HY5.
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Affiliation(s)
- Nikhil Job
- Plant Cell and Developmental Biology Laboratory, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhauri, Bhopal 462066, India and
| | - Premachandran Yadukrishnan
- Plant Cell and Developmental Biology Laboratory, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhauri, Bhopal 462066, India and
| | - Katharina Bursch
- Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, D-14195 Berlin, Germany
| | - Sourav Datta
- Plant Cell and Developmental Biology Laboratory, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhauri, Bhopal 462066, India and
| | - Henrik Johansson
- Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, D-14195 Berlin, Germany
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