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Roeber VM, Bajaj I, Rohde M, Schmülling T, Cortleven A. Light acts as a stressor and influences abiotic and biotic stress responses in plants. PLANT, CELL & ENVIRONMENT 2021; 44:645-664. [PMID: 33190307 DOI: 10.1111/pce.13948] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/19/2020] [Accepted: 11/09/2020] [Indexed: 05/18/2023]
Abstract
Light is important for plants as an energy source and a developmental signal, but it can also cause stress to plants and modulates responses to stress. Excess and fluctuating light result in photoinhibition and reactive oxygen species (ROS) accumulation around photosystems II and I, respectively. Ultraviolet light causes photodamage to DNA and a prolongation of the light period initiates the photoperiod stress syndrome. Changes in light quality and quantity, as well as in light duration are also key factors impacting the outcome of diverse abiotic and biotic stresses. Short day or shady environments enhance thermotolerance and increase cold acclimation. Similarly, shade conditions improve drought stress tolerance in plants. Additionally, the light environment affects the plants' responses to biotic intruders, such as pathogens or insect herbivores, often reducing growth-defence trade-offs. Understanding how plants use light information to modulate stress responses will support breeding strategies to enhance crop stress resilience. This review summarizes the effect of light as a stressor and the impact of the light environment on abiotic and biotic stress responses. There is a special focus on the role of the different light receptors and the crosstalk between light signalling and stress response pathways.
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Affiliation(s)
- Venja M Roeber
- Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, Berlin, Germany
| | - Ishita Bajaj
- Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, Berlin, Germany
| | - Mareike Rohde
- Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, Berlin, Germany
| | - Thomas Schmülling
- Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, Berlin, Germany
| | - Anne Cortleven
- Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, Berlin, Germany
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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: 79] [Impact Index Per Article: 26.3] [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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Yan J, Kim YJ, Somers DE. Post-Translational Mechanisms of Plant Circadian Regulation. Genes (Basel) 2021; 12:325. [PMID: 33668215 PMCID: PMC7995963 DOI: 10.3390/genes12030325] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/21/2021] [Accepted: 02/22/2021] [Indexed: 12/15/2022] Open
Abstract
The molecular components of the circadian system possess the interesting feature of acting together to create a self-sustaining oscillator, while at the same time acting individually, and in complexes, to confer phase-specific circadian control over a wide range of physiological and developmental outputs. This means that many circadian oscillator proteins are simultaneously also part of the circadian output pathway. Most studies have focused on transcriptional control of circadian rhythms, but work in plants and metazoans has shown the importance of post-transcriptional and post-translational processes within the circadian system. Here we highlight recent work describing post-translational mechanisms that impact both the function of the oscillator and the clock-controlled outputs.
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Affiliation(s)
| | | | - David E. Somers
- Department of Molecular Genetics, The Ohio State University; Columbus, OH 43210, USA; (J.Y.); (Y.J.K.)
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Zhao H, Xu D, Tian T, Kong F, Lin K, Gan S, Zhang H, Li G. Molecular and functional dissection of EARLY-FLOWERING 3 (ELF3) and ELF4 in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 303:110786. [PMID: 33487361 DOI: 10.1016/j.plantsci.2020.110786] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 10/31/2020] [Accepted: 11/28/2020] [Indexed: 05/18/2023]
Abstract
The circadian clock is an endogenous timekeeper system that generates biological rhythms of approximately 24 h in most organisms. EARLY FLOWERING 3 (ELF3) and ELF4 were initially identified as negative regulators of flowering time in Arabidopsis thaliana. They were then found to play crucial roles in the circadian clock by integrating environmental light and ambient temperature signals and transmitting them to the central oscillator, thereby regulating various downstream cellular and physiological processes. At dusk, ELF3 acts as a scaffold, interacting with ELF4 and the transcription factor LUX ARRHYTHMO (PHYTOCLOCK1) to form an EVENING COMPLEX (EC). This complex represses the transcription of multiple circadian clock-related genes, thus inhibiting hypocotyl elongation and flowering. Subsequent studies have expanded knowledge about the regulatory roles of the EC in thermomorphogenesis and shade responses. In addition, ELF3 and ELF4 also form multiple complexes with other proteins including chromatin remodeling factors, histone deacetylase, and transcription factors, thus enabling the transcriptional repression of diverse targets. In this review, we summarize the recent advances in elucidating the regulatory mechanisms of ELF3 and ELF4 in plants and discuss directions for future research on ELF3 and ELF4.
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Affiliation(s)
- Hang Zhao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271000, China; College of Life Sciences, Qufu Normal University, Qufu, 273165, China
| | - Di Xu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271000, China
| | - Tian Tian
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271000, China
| | - Fanying Kong
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271000, China
| | - Ke Lin
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271000, China; Department of Biology Science and Technology, Taishan University, Tai'an, 271000, China
| | - Shuo Gan
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271000, China
| | - Haisen Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271000, China
| | - Gang Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271000, China.
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Shao YJ, Zhu QY, Yao ZW, Liu JX. Phosphoproteomic Analysis of Thermomorphogenic Responses in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2021; 12:753148. [PMID: 34603364 PMCID: PMC8481946 DOI: 10.3389/fpls.2021.753148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 08/20/2021] [Indexed: 05/07/2023]
Abstract
Plants rapidly adapt to elevated ambient temperature by adjusting their growth and developmental programs. To date, a number of experiments have been carried out to understand how plants sense and respond to warm temperatures. However, how warm temperature signals are relayed from thermosensors to transcriptional regulators is largely unknown. To identify new early regulators of plant thermo-responsiveness, we performed phosphoproteomic analysis using TMT (Tandem Mass Tags) labeling and phosphopeptide enrichment with Arabidopsis etiolated seedlings treated with or without 3h of warm temperatures (29°C). In total, we identified 13,160 phosphopeptides in 5,125 proteins with 10,700 quantifiable phosphorylation sites. Among them, 200 sites (180 proteins) were upregulated, while 120 sites (87 proteins) were downregulated by elevated temperature. GO (Gene Ontology) analysis indicated that phosphorelay-related molecular function was enriched among the differentially phosphorylated proteins. We selected ATL6 (ARABIDOPSIS TOXICOS EN LEVADURA 6) from them and expressed its native and phosphorylation-site mutated (S343A S357A) forms in Arabidopsis and found that the mutated form of ATL6 was less stable than that of the native form both in vivo and in cell-free degradation assays. Taken together, our data revealed extensive protein phosphorylation during thermo-responsiveness, providing new candidate proteins/genes for studying plant thermomorphogenesis in the future.
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Hwang G, Park J, Kim S, Park J, Seo D, Oh E. Overexpression of BBX18 Promotes Thermomorphogenesis Through the PRR5-PIF4 Pathway. FRONTIERS IN PLANT SCIENCE 2021; 12:782352. [PMID: 34899810 PMCID: PMC8651621 DOI: 10.3389/fpls.2021.782352] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/03/2021] [Indexed: 05/19/2023]
Abstract
Thermomorphogenesis is the morphological response of plants to an elevation in the ambient temperature, which is mediated by the bHLH transcription factor PIF4. The evening-expressed clock component, PRR5, directly represses the expression of PIF4 mRNA. Additionally, PRR5 interacts with PIF4 protein and represses its transactivation activity, which in turn suppresses the thermoresponsive growth in the evening. Here, we found that the B-box zinc finger protein, BBX18, interacts with PRR5 through the B-Box2 domain. Deletion of the B-Box2 domain abolished the functions of BBX18, including the stimulation of PIF4 mRNA expression and hypocotyl growth. Overexpression of BBX18, and not of B-Box2-deleted BBX18, restored the expression of thermoresponsive genes in the evening. We further show that BBX18 prevents PRR5 from inhibiting PIF4-mediated high temperature responses. Taken together, our results suggest that BBX18 regulates thermoresponsive growth through the PRR5-PIF4 pathway.
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Bu X, Wang X, Yan J, Zhang Y, Zhou S, Sun X, Yang Y, Ahammed GJ, Liu Y, Qi M, Wang F, Li T. Genome-Wide Characterization of B-Box Gene Family and Its Roles in Responses to Light Quality and Cold Stress in Tomato. FRONTIERS IN PLANT SCIENCE 2021; 12:698525. [PMID: 34290726 PMCID: PMC8287887 DOI: 10.3389/fpls.2021.698525] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 05/28/2021] [Indexed: 05/17/2023]
Abstract
Perceiving incoming environmental information is critical for optimizing plant growth and development. Multiple B-box proteins (BBXs) play essential roles in light-dependent developmental processes in plants. However, whether BBXs function as a signal integrator between light and temperature in tomato plants remains elusive. In this study, 31 SlBBX genes were identified from the newly released tomato (Solanum lycopersicum) genome sequences and were clustered into five subgroups. Gene structure and protein motif analyses showed relatively high conservation of closely clustered SlBBX genes within each subgroup; however, genome mapping analysis indicated the uneven distribution of the SlBBX genes on tomato chromosomes. Promoter cis-regulatory elements prediction and gene expression indicated that SlBBX genes were highly responsive to light, hormones, and stress conditions. Reverse genetic approaches revealed that disruption of SlBBX7, SlBBX9, and SlBBX20 largely suppressed the cold tolerance of tomato plants. Furthermore, the impairment of SlBBX7, SlBBX9, and SlBBX20 suppressed the photosynthetic response immediately after cold stress. Due to the impairment of non-photochemical quenching (NPQ), the excess photon energy and electron flow excited by low temperature were not consumed in SlBBX7-, SlBBX9-, and SlBBX20- silenced plants, leading to the over reduction of electron carriers and damage of the photosystem. Our study emphasized the positive roles of light signaling transcription factors SlBBXs in cold tolerance in tomato plants, which may improve the current understanding of how plants integrate light and temperature signals to adapt to adverse environments.
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Affiliation(s)
- Xin Bu
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture, Ministry of Education, Shenyang, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
| | - Xiujie Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Jiarong Yan
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Ying Zhang
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Shunyuan Zhou
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Xin Sun
- College of Land and Environment, Shenyang Agricultural University, Shenyang, China
| | - Youxin Yang
- College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Golam Jalal Ahammed
- College of Forestry, Henan University of Science and Technology, Luoyang, China
| | - Yufeng Liu
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture, Ministry of Education, Shenyang, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
| | - Mingfang Qi
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture, Ministry of Education, Shenyang, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
| | - Feng Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture, Ministry of Education, Shenyang, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
- *Correspondence: Feng Wang orcid.org/0000-0001-5351-1531
| | - Tianlai Li
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture, Ministry of Education, Shenyang, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
- Tianlai Li
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58
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Lira BS, Oliveira MJ, Shiose L, Wu RTA, Rosado D, Lupi ACD, Freschi L, Rossi M. Light and ripening-regulated BBX protein-encoding genes in Solanum lycopersicum. Sci Rep 2020; 10:19235. [PMID: 33159121 PMCID: PMC7648751 DOI: 10.1038/s41598-020-76131-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 10/20/2020] [Indexed: 12/15/2022] Open
Abstract
Light controls several aspects of plant development through a complex signalling cascade. Several B-box domain containing proteins (BBX) were identified as regulators of Arabidopsis thaliana seedling photomorphogenesis. However, the knowledge about the role of this protein family in other physiological processes and species remains scarce. To fill this gap, here BBX protein encoding genes in tomato genome were characterised. The robust phylogeny obtained revealed how the domain diversity in this protein family evolved in Viridiplantae and allowed the precise identification of 31 tomato SlBBX proteins. The mRNA profiling in different organs revealed that SlBBX genes are regulated by light and their transcripts accumulation is directly affected by the chloroplast maturation status in both vegetative and fruit tissues. As tomato fruits develops, three SlBBXs were found to be upregulated in the early stages, controlled by the proper chloroplast differentiation and by the PHYTOCHROME (PHY)-dependent light perception. Upon ripening, other three SlBBXs were transcriptionally induced by RIPENING INHIBITOR master transcriptional factor, as well as by PHY-mediated signalling and proper plastid biogenesis. Altogether, the results obtained revealed a conserved role of SlBBX gene family in the light signalling cascade and identified putative members affecting tomato fruit development and ripening.
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Affiliation(s)
- Bruno Silvestre Lira
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
| | - Maria José Oliveira
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
| | - Lumi Shiose
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
| | - Raquel Tsu Ay Wu
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
| | - Daniele Rosado
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
- Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY, 11724, USA
| | | | - Luciano Freschi
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
| | - Magdalena Rossi
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil.
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Lee S, Paik I, Huq E. SPAs promote thermomorphogenesis by regulating the phyB-PIF4 module in Arabidopsis. Development 2020; 147:dev189233. [PMID: 32994167 PMCID: PMC7561471 DOI: 10.1242/dev.189233] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 09/07/2020] [Indexed: 01/14/2023]
Abstract
High ambient temperature attributable to global warming has a profound influence on plant growth and development at all stages of the life cycle. The response of plants to high ambient temperature, termed thermomorphogenesis, is characterized by hypocotyl and petiole elongation and hyponastic growth at the seedling stage. However, our understanding of the molecular mechanism of thermomorphogenesis is still rudimentary. Here, we show that a set of four SUPPRESSOR OF PHYA-105 (SPA) genes is required for thermomorphogenesis. Consistently, SPAs are necessary for global changes in gene expression in response to high ambient temperature. In the spaQ mutant at high ambient temperature, the level of SPA1 is unaffected, whereas the thermosensor phytochrome B (phyB) is stabilized. Furthermore, in the absence of four SPA genes, the pivotal transcription factor PIF4 fails to accumulate, indicating a role of SPAs in regulating the phyB-PIF4 module at high ambient temperature. SPA1 directly phosphorylates PIF4 in vitro, and a mutant SPA1 affecting the kinase activity fails to rescue the PIF4 level in addition to the thermo-insensitive phenotype of spaQ, suggesting that the SPA1 kinase activity is necessary for thermomorphogenesis. Taken together, these data suggest that SPAs are new components that integrate light and temperature signaling by fine-tuning the phyB-PIF4 module.
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Affiliation(s)
- Sanghwa Lee
- Department of Molecular Biosciences and The Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712, USA
| | - Inyup Paik
- Department of Molecular Biosciences and The Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712, USA
| | - Enamul Huq
- Department of Molecular Biosciences and The Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712, USA
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60
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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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61
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Sun J, Tian Y, Lian Q, Liu JX. Mutation of DELAYED GREENING1 impairs chloroplast RNA editing at elevated ambient temperature in Arabidopsis. J Genet Genomics 2020; 47:201-212. [PMID: 32505546 DOI: 10.1016/j.jgg.2020.03.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 03/09/2020] [Accepted: 03/23/2020] [Indexed: 11/18/2022]
Abstract
Chloroplasts are important for plant growth and development. RNA editing in chloroplast converts cytidines (Cs) to uridines (Us) at specific transcript positions and provides a correction mechanism to restore conserved codons or creates start or stop codons. However, the underlined molecular mechanism is not yet fully understood. In the present study, we identified a thermo-sensitive mutant in leaf color 1 (tsl1) and found that TSL1 is allelic to DELAYED GREENING 1 (DG1). The missense mutation of DG1 in tsl1 mutant confers a high temperature sensitivity and impaired chloroplast development at an elevated ambient temperature in Arabidopsis. Subsequent analysis showed that chloroplast RNA editing at several sites including accD-1568, ndhD-2, and petL-5 is impaired in tsl1 mutant plants grown at an elevated temperature. DG1 interacts with MORF2 and other proteins such as DYW1 and DYW2 involved in chloroplast RNA editing. In vitro RNA electrophoretic mobility shift assay demonstrated that DG1 binds to RNA targets such as accD, ndhD, and petL. Thus, our results revealed that DG1 is important for maintaining chloroplast mRNA editing in Arabidopsis.
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Affiliation(s)
- Jingliang Sun
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200433, China; State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310027, China
| | - Yingying Tian
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310027, China
| | - Qichao Lian
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200433, China
| | - Jian-Xiang Liu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200433, China; State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310027, China.
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62
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Ding Y, Shi Y, Yang S. Molecular Regulation of Plant Responses to Environmental Temperatures. MOLECULAR PLANT 2020; 13:544-564. [PMID: 32068158 DOI: 10.1016/j.molp.2020.02.004] [Citation(s) in RCA: 282] [Impact Index Per Article: 70.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/10/2020] [Accepted: 02/11/2020] [Indexed: 05/19/2023]
Abstract
Temperature is a key factor governing the growth and development, distribution, and seasonal behavior of plants. The entire plant life cycle is affected by environmental temperatures. Plants grow rapidly and exhibit specific changes in morphology under mild average temperature conditions, a response termed thermomorphogenesis. When exposed to chilling or moist chilling low temperatures, flowering or seed germination is accelerated in some plant species; these processes are known as vernalization and cold stratification, respectively. Interestingly, once many temperate plants are exposed to chilling temperatures for some time, they can acquire the ability to resist freezing stress, a process termed cold acclimation. In the face of global climate change, heat stress has emerged as a frequent challenge, which adversely affects plant growth and development. In this review, we summarize and discuss recent progress in dissecting the molecular mechanisms regulating plant thermomorphogenesis, vernalization, and responses to extreme temperatures. We also discuss the remaining issues that are crucial for understanding the interactions between plants and temperature.
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Affiliation(s)
- Yanglin Ding
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yiting Shi
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Shuhua Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, 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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Jiang Y, Yang C, Huang S, Xie F, Xu Y, Liu C, Li L. The ELF3-PIF7 Interaction Mediates the Circadian Gating of the Shade Response in Arabidopsis. iScience 2019; 22:288-298. [PMID: 31805433 PMCID: PMC6909221 DOI: 10.1016/j.isci.2019.11.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 06/04/2019] [Accepted: 11/14/2019] [Indexed: 12/20/2022] Open
Abstract
Light filtered through dense planting initiates the shade avoidance syndrome (SAS) in plants, which helps them compete against their neighbors. Quantitative trait loci (QTL)-based analysis identified the nighttime-expressed clock component ELF3 as a new player in the SAS, but its detailed mechanism is unclear. Here, we show that the circadian clock gates shade-induced gene expression and hypocotyl elongation at night. ELF3 is involved in nighttime suppression via interaction with and inactivation of PHYTOCHROME-INTERACTING FACTOR 7 (PIF7). Loss of function of ELF3 restores the shade induction, which is largely reduced in the absence of PIF7, indicating that ELF3 acts upstream of PIF7. Finally, we found that the repressive activity of ELF3 on the shade response is stronger under short days than under long days. Our results reveal that the interaction between ELF3 and PIF7 mediates the circadian gating of the SAS, which coordinates the daily control of physiological outputs. ELF3 is involved in the inhibition of the shade response at night ELF3 interacts with PIF7 and prevents PIF7 from binding DNA ELF3 acts upstream of PIF7 in shade-induced growth Repressive activity of ELF3 is stronger under SDs than under LDs
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Affiliation(s)
- Yupei Jiang
- State Key Laboratory of Genetic Engineering and Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, People's Republic of China
| | - Chuanwei Yang
- State Key Laboratory of Genetic Engineering and Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, People's Republic of China
| | - Sha Huang
- State Key Laboratory of Genetic Engineering and Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, People's Republic of China
| | - Famin Xie
- State Key Laboratory of Genetic Engineering and Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, People's Republic of China
| | - Yitian Xu
- State Key Laboratory of Genetic Engineering and Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, People's Republic of China
| | - Chang Liu
- State Key Laboratory of Genetic Engineering and Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, People's Republic of China
| | - Lin Li
- State Key Laboratory of Genetic Engineering and Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, People's Republic of China.
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