1
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Lee SJ, Kim Y, Kang K, Yoon H, Kang J, Cho SH, Paek NC. Rice CRYPTOCHROME-INTERACTING BASIC HELIX-LOOP-HELIX 1-LIKE interacts with OsCRY2 and promotes flowering by upregulating Early heading date 1. PLANT, CELL & ENVIRONMENT 2024. [PMID: 39012205 DOI: 10.1111/pce.15046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 06/06/2024] [Accepted: 06/26/2024] [Indexed: 07/17/2024]
Abstract
Flowering time is a crucial adaptive response to seasonal variation in plants and is regulated by environmental cues such as photoperiod and temperature. In this study, we demonstrated the regulatory function of rice CRYPTOCHROME-INTERACTING BASIC HELIX-LOOP-HELIX 1-LIKE (OsCIBL1) in flowering time. Overexpression of OsCIB1L promoted flowering, whereas the oscib1l knockout mutation did not alter flowering time independent of photoperiodic conditions. Cryptochromes (CRYs) are blue light photoreceptors that enable plants to sense photoperiodic changes. OsCIBL1 interacted with OsCRY2, a member of the rice CRY family (OsCRY1a, OsCRY1b, and OsCRY2), and bound to the Early heading date 1 (Ehd1) promoter, activating the rice-specific Ehd1-Heading date 3a/RICE FLOWERING LOCUS T 1 pathway for flowering induction. Dual-luciferase reporter assays showed that the OsCIBL1-OsCRY2 complex required blue light to induce Ehd1 transcription. Natural alleles resulting from nonsynonymous single nucleotide polymorphisms in OsCIB1L and OsCRY2 may contribute to the adaptive expansion of rice cultivation areas. These results expand our understanding of the molecular mechanisms controlling rice flowering and highlight the importance of blue light-responsive genes in the geographic distribution of rice.
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Affiliation(s)
- Sang-Ji Lee
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Yunjeong Kim
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Kiyoon Kang
- Division of Life Sciences, Incheon National University, Incheon, Republic of Korea
| | - Hyeryung Yoon
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Jinku Kang
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Sung-Hwan Cho
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Nam-Chon Paek
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
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2
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Qin X, Li Y, Li C, Li X, Wu Y, Wu Q, Wen H, Jiang D, Liu S, Nan W, Liang Y, Zhang H. A Rapid and Simplified Method to Isolate Specific Regulators Based on Biotin-Avidin Binding Affinities in Crops. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:883-893. [PMID: 38118073 DOI: 10.1021/acs.jafc.3c05638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Transcription factors (TFs) are indispensable components of transcriptional regulatory pathways involved in crop growth and development. Herein, we developed a new method for the identification of upstream TFs specific to genes in crops based on the binding affinities of biotin and avidin. First, we constructed and verified the new biotin and avidin system (BAS) by a coprecipitation assay. Subsequently, the feasibility of DNA-based BAS (DBAS) was further proved by in vivo and in vitro assays. Furthermore, we cloned the promoter of rice OsNRT1.1B and the possible regulators were screened and identified. Additionally, partial candidates were validated by the electrophoresis mobility shift assay (EMSA), yeast one-hybrid, and luciferase activity assays. Remarkably, the results showed that the candidates PIP3 and PIP19 both responded to nitrate immediately and overexpression of PIP3 caused retard growth, which indicates that the candidates are functional and the new DBAS method is useful to isolate regulators in crops.
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Affiliation(s)
- Xiaojian Qin
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
- Key Laboratory of Molecular Biology of Plants Environmental Adaptations, Chongqing Normal University, Chongqing 401331, China
| | - Yuntong Li
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Cuiping Li
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Xiaowei Li
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Yuanyuan Wu
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Qian Wu
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Huan Wen
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Dan Jiang
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Shifeng Liu
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Wenbin Nan
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
- Key Laboratory of Molecular Biology of Plants Environmental Adaptations, Chongqing Normal University, Chongqing 401331, China
| | - Yongshu Liang
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
- Key Laboratory of Molecular Biology of Plants Environmental Adaptations, Chongqing Normal University, Chongqing 401331, China
| | - Hanma Zhang
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
- Key Laboratory of Molecular Biology of Plants Environmental Adaptations, Chongqing Normal University, Chongqing 401331, China
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3
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Zhao X, Liu W, Aiwaili P, Zhang H, Xu Y, Gu Z, Gao J, Hong B. PHOTOLYASE/BLUE LIGHT RECEPTOR2 regulates chrysanthemum flowering by compensating for gibberellin perception. PLANT PHYSIOLOGY 2023; 193:2848-2864. [PMID: 37723123 PMCID: PMC10663108 DOI: 10.1093/plphys/kiad503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 08/10/2023] [Accepted: 08/27/2023] [Indexed: 09/20/2023]
Abstract
The gibberellins (GAs) receptor GA INSENSITIVE DWARF1 (GID1) plays a central role in GA signal perception and transduction. The typical photoperiodic plant chrysanthemum (Chrysanthemum morifolium) only flowers when grown in short-day photoperiods. In addition, chrysanthemum flowering is also controlled by the aging pathway, but whether and how GAs participate in photoperiod- and age-dependent regulation of flowering remain unknown. Here, we demonstrate that photoperiod affects CmGID1B expression in response to GAs and developmental age. Moreover, we identified PHOTOLYASE/BLUE LIGHT RECEPTOR2, an atypical photocleavage synthase, as a CRYPTOCHROME-INTERACTING bHLH1 interactor with which it forms a complex in response to short days to activate CmGID1B transcription. Knocking down CmGID1B raised endogenous bioactive GA contents and GA signal perception, in turn modulating the expression of the aging-related genes MicroRNA156 and SQUAMOSA PROMOTER BINDING PROTEIN-LIKE3. We propose that exposure to short days accelerates the juvenile-to-adult transition by increasing endogenous GA contents and response to GAs, leading to entry into floral transformation.
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Affiliation(s)
- Xin Zhao
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, China
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Wenwen Liu
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, China
| | - Palinuer Aiwaili
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, China
| | - Han Zhang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, China
| | - Yanjie Xu
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, China
| | - Zhaoyu Gu
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, China
| | - Junping Gao
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, China
| | - Bo Hong
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, China
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4
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Hammock HA, Kopsell DA, Sams CE. Application timing and duration of LED and HPS supplements differentially influence yield, nutrient bioaccumulation, and light use efficiency of greenhouse basil across seasons. FRONTIERS IN PLANT SCIENCE 2023; 14:1174823. [PMID: 38023892 PMCID: PMC10644351 DOI: 10.3389/fpls.2023.1174823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023]
Abstract
Three primary factors that impact plant growth and development are light quantity, quality, and duration. Commercial growers can manipulate these parameters using light-emitting diodes (LEDs) to optimize biomass yield and plant quality. There is significant potential to synergize supplemental lighting (SL) parameters with seasonal variation of ambient sunlight to optimize crop light use efficiency (LUE), which could increase biomass while reducing SL electricity costs. To determine the best lighting characteristics and durations for different crops, particularly for enhancing the yield and nutritional quality of high-value specialty crops produced in greenhouses during the winter, a thorough efficacy comparison of progressive incremental daily light integrals (DLIs) using LED and high-pressure sodium (HPS) sources is required. The purpose of this study was to compare the effects of differential application timing and DLIs of supplemental blue (B)/red (R) narrowband wavelengths from LED lighting systems and HPS lamps on greenhouse hydroponic basil (Ocimum basilicum var. 'Genovese') production. We assessed edible biomass, nutrient bioaccumulation, and LUE. Nine light treatments included: one non-supplemented natural light (NL) control, two end-of-day (EOD) HPS treatments applied for 6 h and 12 h, five EOD 20B/80R LED treatments applied for 3 h, 6 h, 9 h, 12 h, 18 h, and one continuous LED treatment (24 h). Each SL treatment provided 100 µmol·m-2·s-1. The DLI of the NL control averaged 9.9 mol·m-2·d-1 during the growth period (ranging from 4 to 20 mol·m-2·d-1). SL treatments and growing seasons significantly impacted biomass and nutrient bioaccumulation; some SL treatments had lower yields than the non-supplemented NL control. January growing season produced the lowest fresh mass (FM) and dry mass (DM) values compared to November, which had the highest. Mineral analyses revealed that both growing seasons and lighting types impacted macro and micronutrient accumulation. Additionally, the efficiency of each treatment in converting electrical energy into biomass varied greatly. EOD supplements using LED and HPS lighting systems both have merits for efficiently optimizing yield and nutrient accumulation in basil; however, biomass and nutrient tissue concentrations highly depend on seasonal variation in ambient sunlight in conjunction with a supplement's spectral quality, DLI, and application schedule.
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Affiliation(s)
| | | | - Carl E. Sams
- Department of Plant Sciences, The University of Tennessee, Knoxville, TN, United States
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5
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Hao Y, Zeng Z, Zhang X, Xie D, Li X, Ma L, Liu M, Liu H. Green means go: Green light promotes hypocotyl elongation via brassinosteroid signaling. THE PLANT CELL 2023; 35:1304-1317. [PMID: 36724050 PMCID: PMC10118266 DOI: 10.1093/plcell/koad022] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 12/20/2022] [Indexed: 06/18/2023]
Abstract
Although many studies have elucidated the mechanisms by which different wavelengths of light (blue, red, far-red, or ultraviolet-B [UV-B]) regulate plant development, whether and how green light regulates plant development remains largely unknown. Previous studies reported that green light participates in regulating growth and development in land plants, but these studies have reported conflicting results, likely due to technical problems. For example, commercial green light-emitting diode light sources emit a little blue or red light. Here, using a pure green light source, we determined that unlike blue, red, far-red, or UV-B light, which inhibits hypocotyl elongation, green light promotes hypocotyl elongation in Arabidopsis thaliana and several other plants during the first 2-3 d after planting. Phytochromes, cryptochromes, and other known photoreceptors do not mediate green-light-promoted hypocotyl elongation, but the brassinosteroid (BR) signaling pathway is involved in this process. Green light promotes the DNA binding activity of BRI1-EMS-SUPPRESSOR 1 (BES1), a master transcription factor of the BR pathway, thus regulating gene transcription to promote hypocotyl elongation. Our results indicate that pure green light promotes elongation via BR signaling and acts as a shade signal to enable plants to adapt their development to a green-light-dominant environment under a canopy.
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Affiliation(s)
- Yuhan Hao
- 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, 200031 Shanghai, P. R. China
| | - Zexian Zeng
- 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, 200031 Shanghai, P. R. China
- University of Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Xiaolin Zhang
- Department of Light Source and Illuminating Engineering, Fudan University, 2005 Songhu Rd, Shanghai 200433, P. R. China
| | - Dixiang Xie
- 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, 200031 Shanghai, P. R. China
- University of Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Xu Li
- 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, 200031 Shanghai, P. R. China
| | - Libang Ma
- 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, 200031 Shanghai, P. R. China
- University of Chinese Academy of Sciences, Shanghai 200031, P. R. China
| | - Muqing Liu
- Department of Light Source and Illuminating Engineering, Fudan University, 2005 Songhu Rd, Shanghai 200433, P. R. 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, 200031 Shanghai, P. R. China
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6
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Xing Y, Sun W, Sun Y, Li J, Zhang J, Wu T, Song T, Yao Y, Tian J. MPK6-mediated HY5 phosphorylation regulates light-induced anthocyanin accumulation in apple fruit. PLANT BIOTECHNOLOGY JOURNAL 2023; 21:283-301. [PMID: 36208018 PMCID: PMC9884024 DOI: 10.1111/pbi.13941] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/13/2022] [Accepted: 09/28/2022] [Indexed: 05/29/2023]
Abstract
Light is known to regulate anthocyanin pigment biosynthesis in plants on several levels, but the significance of protein phosphorylation in light-induced anthocyanin accumulation needs further investigation. In this study, we investigated the dynamics of the apple fruit phosphoproteome in response to light, using high-performance liquid chromatography-tandem mass spectrometry analysis. Among the differentially phosphorylated proteins, the bZIP (basic leucine zipper) transcription factor, HY5, which has been identified as an anthocyanin regulator, was rapidly activated by light treatment of the fruit. We hypothesized that phosphorylated MdHY5 may play a role in light-induced anthocyanin accumulation of apple fruit. Protein interaction and phosphorylation assays showed that mitogen-activated protein kinase MdMPK6 directly interacted with, and activated, MdHY5 via phosphorylation under light conditions, thereby increasing its stability. Consistent with this finding, the suppression of the mitogen-activated protein kinase genes MdMPK6 or MdHY5 resulted in an inhibition of anthocyanin accumulation, and further showed that light-induced anthocyanin accumulation is dependent on MdMPK6 kinase activity, and is required for maximum MdHY5 activity. Under light conditions, active MdMPK6 phosphorylated MdHY5 leading to accumulation of phospho-MdHY5, which enhanced the binding of MdHY5 to its target anthocyanin related genes in fruit. Our findings reveal an MdMPK6-MdHY5 phosphorylation pathway in light-induced anthocyanin accumulation, providing new insights into the regulation of light-induced anthocyanin biosynthesis in apple fruit at both the transcriptional and post-translational levels.
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Affiliation(s)
- Yifan Xing
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignBeijing University of AgricultureBeijingChina
- Plant Science and Technology CollegeBeijing University of AgricultureBeijingChina
| | - Wenjing Sun
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignBeijing University of AgricultureBeijingChina
- Plant Science and Technology CollegeBeijing University of AgricultureBeijingChina
| | - Yuying Sun
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignBeijing University of AgricultureBeijingChina
- Plant Science and Technology CollegeBeijing University of AgricultureBeijingChina
| | - Jialin Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignBeijing University of AgricultureBeijingChina
- Plant Science and Technology CollegeBeijing University of AgricultureBeijingChina
| | - Jie Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignBeijing University of AgricultureBeijingChina
- Plant Science and Technology CollegeBeijing University of AgricultureBeijingChina
| | - Ting Wu
- College of HorticultureChina Agricultural UniversityBeijingChina
| | - Tingting Song
- Plant Science and Technology CollegeBeijing University of AgricultureBeijingChina
| | - Yuncong Yao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignBeijing University of AgricultureBeijingChina
- Plant Science and Technology CollegeBeijing University of AgricultureBeijingChina
| | - Ji Tian
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignBeijing University of AgricultureBeijingChina
- Plant Science and Technology CollegeBeijing University of AgricultureBeijingChina
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7
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Li H, Yang Y, Ye W, Sun G. Exploration of the effect of blue laser light on microRNAs involved in functional metabolism in D. officinale through RNA sequencing. Gene 2023; 851:147009. [DOI: 10.1016/j.gene.2022.147009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/07/2022] [Accepted: 10/19/2022] [Indexed: 11/04/2022]
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8
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Zhao Z, Dent C, Liang H, Lv J, Shang G, Liu Y, Feng F, Wang F, Pang J, Li X, Ma L, Li B, Sureshkumar S, Wang JW, Balasubramanian S, Liu H. CRY2 interacts with CIS1 to regulate thermosensory flowering via FLM alternative splicing. Nat Commun 2022; 13:7045. [PMID: 36396657 PMCID: PMC9671898 DOI: 10.1038/s41467-022-34886-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 11/10/2022] [Indexed: 11/18/2022] Open
Abstract
Cryptochromes (CRYs) are evolutionarily conserved photolyase-like photoreceptors found in almost all species, including mammals. CRYs regulate transcription by modulating the activity of several transcription factors, but whether and how they affect pre-mRNA processing are unknown. Photoperiod and temperature are closely associated seasonal cues that influence reproductive timing in plants. CRYs mediate photoperiod-responsive floral initiation, but it is largely unknown whether and how they are also involved in thermosensory flowering. We establish here that blue light and CRY2 play critical roles in thermosensory flowering in Arabidopsis thaliana by regulating RNA alternative splicing (AS) to affect protein expression and development. CRY2 INTERACTING SPLICING FACTOR 1 (CIS1) interacts with CRY2 in a blue light-dependent manner and promotes CRY2-mediated thermosensory flowering. Blue light, CRYs, and CISs affect transcriptome-wide AS profiles, including those of FLOWERING LOCUS M (FLM), which is critical for temperature modulation of flowering. Moreover, CIS1 binds to the FLM pre-mRNA to regulate its AS, while CRY2 regulates the RNA-binding activity of CIS1. Thus, blue light regulates thermosensory flowering via a CRY2-CIS1-FLM signaling pathway that links flowering responses to both light and ambient temperature.
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Affiliation(s)
- Zhiwei Zhao
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 200032 Shanghai, China
| | - Craig Dent
- grid.1002.30000 0004 1936 7857School of Biological Sciences, Monash University, Clayton Campus, VIC 3800 Australia
| | - Huafeng Liang
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 200032 Shanghai, China
| | - Junqing Lv
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China ,grid.256922.80000 0000 9139 560XCollege of Life Sciences, Henan University, 475001 Kaifeng, China
| | - Guandong Shang
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 200032 Shanghai, China
| | - Yawen Liu
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China
| | - Fan Feng
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China
| | - Fei Wang
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China
| | - Junhong Pang
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China ,grid.256884.50000 0004 0605 1239College of Life Sciences, Hebei Normal University, 050024 Shijiazhuang, China
| | - Xu Li
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China
| | - Libang Ma
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China ,grid.410726.60000 0004 1797 8419University of Chinese Academy of Sciences, 200032 Shanghai, China
| | - Bing Li
- grid.256884.50000 0004 0605 1239College of Life Sciences, Hebei Normal University, 050024 Shijiazhuang, China
| | - Sridevi Sureshkumar
- grid.1002.30000 0004 1936 7857School of Biological Sciences, Monash University, Clayton Campus, VIC 3800 Australia
| | - Jia-Wei Wang
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China
| | - Sureshkumar Balasubramanian
- grid.1002.30000 0004 1936 7857School of Biological Sciences, Monash University, Clayton Campus, VIC 3800 Australia
| | - Hongtao Liu
- grid.9227.e0000000119573309National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032 Shanghai, China
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9
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Tokunaga H, Quynh DTN, Anh NH, Nhan PT, Matsui A, Takahashi S, Tanaka M, Anh NM, Van Dong N, Ham LH, Higo A, Hoa TM, Ishitani M, Minh NBN, Hy NH, Srean P, Thu VA, Tung NB, Vu NA, Yamaguchi K, Tsuji H, Utsumi Y, Seki M. Field transcriptome analysis reveals a molecular mechanism for cassava-flowering in a mountainous environment in Southeast Asia. PLANT MOLECULAR BIOLOGY 2022; 109:233-248. [PMID: 32902791 DOI: 10.1007/s11103-020-01057-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 08/17/2020] [Indexed: 05/12/2023]
Abstract
The field survey in this article showed in 'KU50', a popular variety and late-branching type of cassava in Southeast Asia, that flowering rarely occurs in normal-field conditions in Southeast Asia but is strongly induced in the dry season in the mountainous region. Flowering time is correlated with the expression patterns of MeFT1 and homologs of Arabidopsis GI, PHYA, and NF-Ys. Cassava (Manihot esculenta Crantz) is a tropical crop that is propagated vegetatively rather than sexually by seed. Flowering rarely occurs in the erect-type variety grown in Southeast Asia, but it is known that cassava produces flowers every year in mountainous regions. Data pertaining to the effect of environmental factors on flowering time and gene expression in cassava, however, is limited. The aim of the present study was to determine the kinds of environmental conditions that regulate flowering time in cassava and the underlying molecular mechanisms. The flowering status of KU50, a popular variety in Southeast Asia and late-branching type of cassava, was monitored in six fields in Vietnam and Cambodia. At non-flowering and flowering field locations in North Vietnam, the two FLOWERING LOCUS T (FT)-like genes, MeFT1 and MeFT2, were characterized by qPCR, and the pattern of expression of flowering-related genes and genes responsive to environmental signals were analyzed by using RNA sequencing data from time-series samples. Results indicate that cassava flowering was induced in the dry season in the mountain region, and that flowering time was correlated with the expression of MeFT1, and homologs of Arabidopsis GI, PHYA, and NF-Ys. Based upon these data, we hypothesize that floral induction in cassava is triggered by some conditions present in the mountain regions during the dry season.
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Affiliation(s)
- Hiroki Tokunaga
- Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan.
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam.
| | - Do Thi Nhu Quynh
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam
- National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam
| | - Nguyen Hai Anh
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam
- National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam
| | - Pham Thi Nhan
- Hung Loc Agricultural Research Center (HLARC), Dong Nai, Vietnam
| | - Akihiro Matsui
- Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan
| | | | - Maho Tanaka
- Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan
| | - Ngo Minh Anh
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam
- JICA Vietnam Office, Hanoi, Vietnam
| | - Nguyen Van Dong
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam
- National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam
| | - Le Huy Ham
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam
- National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam
| | - Asuka Higo
- Kihara Institute for Biological Research, Yokohama City University, Kanagawa, Japan
| | - Truong Minh Hoa
- Hung Loc Agricultural Research Center (HLARC), Dong Nai, Vietnam
| | - Manabu Ishitani
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam
- International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | | | - Nguyen Huu Hy
- Hung Loc Agricultural Research Center (HLARC), Dong Nai, Vietnam
| | - Pao Srean
- University of Battambang (UBB), Battambang, Cambodia
| | - Vu Anh Thu
- Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam
- National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam
| | - Nguyen Ba Tung
- Hung Loc Agricultural Research Center (HLARC), Dong Nai, Vietnam
| | - Nguyen Anh Vu
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam
- National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam
| | - Kaho Yamaguchi
- Kihara Institute for Biological Research, Yokohama City University, Kanagawa, Japan
| | - Hiroyuki Tsuji
- Kihara Institute for Biological Research, Yokohama City University, Kanagawa, Japan
| | - Yoshinori Utsumi
- Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam
| | - Motoaki Seki
- Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan.
- International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam.
- Kihara Institute for Biological Research, Yokohama City University, Kanagawa, Japan.
- Cluster for Pioneering Research, RIKEN, Saitama, Japan.
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10
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Jia M, Munz J, Lee J, Shelley N, Xiong Y, Joo S, Jin E, Lee JH. The bHLH family NITROGEN-REPLETION INSENSITIVE1 represses nitrogen starvation-induced responses in Chlamydomonas reinhardtii. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 110:337-357. [PMID: 35043510 DOI: 10.1111/tpj.15673] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 01/12/2022] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Moyan Jia
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Jacob Munz
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Jenny Lee
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Nolan Shelley
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Yuan Xiong
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Sunjoo Joo
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - EonSeon Jin
- Department of Life Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, 133-791, Republic of Korea
| | - Jae-Hyeok Lee
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
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11
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Li H, Qiu Y, Sun G, Ye W. RNA sequencing-based exploration of the effects of blue laser irradiation on mRNAs involved in functional metabolites of D. officinales. PeerJ 2022; 9:e12684. [PMID: 35036158 PMCID: PMC8740519 DOI: 10.7717/peerj.12684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 12/03/2021] [Indexed: 12/17/2022] Open
Abstract
Dendrobium officinale Kimura et Migo (D. officinale) has promising lung moisturizing, detoxifying, and immune boosting properties. Light is an important factor influencing functional metabolite synthesis in D. officinale. The mechanisms by which lasers affect plants are different from those of ordinary light sources; lasers can effectively address the shortcomings of ordinary light sources and have significant interactions with plants. Different light treatments (white, blue, blue laser) were applied, and the number of red leaves under blue laser was greater than that under blue and white light. RNA-seq technology was used to analyze differences in D. officinale under different light treatments. The results showed 465, 2,107 and 1,453 differentially expressed genes (DEGs) in LB-B, LB-W and W-B, respectively. GO, KEGG and other analyses of DEGs indicated that D. officinale has multiple blue laser response modes. Among them, the plasma membrane, cutin, suberine and wax biosynthesis, flavone and flavonol biosynthesis, heat shock proteins, etc. play central roles. Physiological and biochemical results verified that blue laser irradiation significantly increases POD, SOD, and PAL activities in D. officinale. The functional metabolite results showed that blue laser had the greatest promoting effect on total flavonoids, polysaccharides, and alkaloids. qPCR verification combined with other results suggested that CRY DASH, SPA1, HY5, and PIF4 in the blue laser signal transduction pathway affect functional metabolite accumulation in D. officinale through positively regulated expression patterns, while CO16 and MYC2 exhibit negatively regulated expression patterns. These findings provide new ideas for the efficient production of metabolites in D. officinale.
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Affiliation(s)
- Hansheng Li
- College of Architectural Engineering, Sanming University, Sanming, Chian
| | - Yuqiang Qiu
- Xiamen Institute of Technology, Xiamen, China
| | - Gang Sun
- College of Resources and Chemical Engineering, Sanming University, Sanming, China
| | - Wei Ye
- The Institute of Medicinal Plant, Sanming Academy of Agricultural Science, Shaxian, China
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12
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Additional Blue LED during Cultivation Induces Cold Tolerance in Tomato Fruit but Only to an Optimum. BIOLOGY 2022; 11:biology11010101. [PMID: 35053099 PMCID: PMC8773245 DOI: 10.3390/biology11010101] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 12/26/2022]
Abstract
Simple Summary LED lighting is increasingly applied to increase yield and quality of greenhouse produced crops, especially tomatoes. Tomatoes cannot be stored at cold temperatures due to chilling injury that manifests as quick quality deterioration during shelf life. The aim of this study is to investigate whether additional blue LED lighting can mitigate the negative effects of cold storage for ‘Foundation’ tomatoes. We applied three treatments, 0, 12 or 24% additional blue light during cultivation, and investigated quality attributes at harvest, after cold storage and subsequent shelf-life. We observed that red harvested tomatoes cultivated with 12% additional blue light acquired cold tolerance. Interestingly, these tomatoes were slightly less red colored at harvest and showed a faster loss of red color during cold storage. The measured red color is closely related to the lycopene concentration. We hypothesize that lycopene, a known antioxidant, present in 12% additional blue cultivated tomatoes mitigates chilling injury. Other antioxidants present in tomatoes were only affected by the ripeness at harvest and were therefore not involved in the acquired cold tolerance. The cultivation of tomatoes using additional blue LED is an attractive way to produce tomatoes that can withstand long transport at cold temperatures at the expense of a slightly less red tomato at the consumer. Abstract Tomato is a chilling-sensitive fruit. The aim of this study is to examine the role of preharvest blue LED lighting (BL) to induce cold tolerance in ‘Foundation’ tomatoes. Blue and red supplemental LED light was applied to achieve either 0, 12 or 24% additional BL (0B, 12B and 24B). Mature green (MG) or red (R) tomatoes were harvested and cold stored at 4 °C for 0, 5, 10, 15 and 20 d, and then stored for 20 d at 20 °C (shelf life). Chilling injury (CI) indices, color and firmness, hydrogen peroxide, malondialdehyde, ascorbic acid and catalase activity were characterized. At harvest, R tomatoes cultivated at 12B were firmer and showed less coloration compared to fruit of other treatments. These fruits also showed higher loss of red color during cold storage and lower CI symptoms during shelf-life. MG tomatoes cultivated at 12B showed delayed coloring (non-chilled) and decreased weight loss (long cold stored) during shelf life compared to fruit in the other treatments. No effects of light treatments, both for MG and R tomatoes, were observed for the selected antioxidant capacity indicators. Improved cold tolerance for R tomatoes cultivated at 12B points to lycopene having higher scavenging activity at lower concentrations to mitigate chilling injury.
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13
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He B, Zhang Y, Wang L, Guo D, Jia X, Wu J, Qi S, Wu H, Gao Y, Guo M. Both Two CtACO3 Transcripts Promoting the Accumulation of the Flavonoid Profiles in Overexpressed Transgenic Safflower. FRONTIERS IN PLANT SCIENCE 2022; 13:833811. [PMID: 35463446 PMCID: PMC9019494 DOI: 10.3389/fpls.2022.833811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 02/23/2022] [Indexed: 05/10/2023]
Abstract
The unique flavonoids, quinochalcones, such as hydroxysafflor yellow A (HSYA) and carthamin, in the floret of safflower showed an excellent pharmacological effect in treating cardiocerebral vascular disease, yet the regulating mechanisms governing the flavonoid biosynthesis are largely unknown. In this study, CtACO3, the key enzyme genes required for the ethylene signaling pathway, were found positively related to the flavonoid biosynthesis at different floret development periods in safflower and has two CtACO3 transcripts, CtACO3-1 and CtACO3-2, and the latter was a splice variant of CtACO3 that lacked 5' coding sequences. The functions and underlying probable mechanisms of the two transcripts have been explored. The quantitative PCR data showed that CtACO3-1 and CtACO3-2 were predominantly expressed in the floret and increased with floret development. Subcellular localization results indicated that CtACO3-1 was localized in the cytoplasm, whereas CtACO3-2 was localized in the cytoplasm and nucleus. Furthermore, the overexpression of CtACO3-1 or CtACO3-2 in transgenic safflower lines significantly increased the accumulation of quinochalcones and flavonols. The expression of the flavonoid pathway genes showed an upward trend, with CtCHS1, CtF3H1, CtFLS1, and CtDFR1 was considerably induced in the overexpression of CtACO3-1 or CtACO3-2 lines. An interesting phenomenon for CtACO3-2 protein suppressing the transcription of CtACO3-1 might be related to the nucleus location of CtACO3-2. Yeast two-hybrid (Y2H), glutathione S-transferase (GST) pull-down, and BiFC experiments revealed that CtACO3-2 interacted with CtCSN5a. In addition, the interactions between CtCSN5a and CtCOI1, CtCOI1 and CtJAZ1, CtJAZ1 and CtbHLH3 were observed by Y2H and GST pull-down methods, respectively. The above results suggested that the CtACO3-2 promoting flavonoid accumulation might be attributed to the transcriptional activation of flavonoid biosynthesis genes by CtbHLH3, whereas the CtbHLH3 might be regulated through CtCSN5-CtCOI1-CtJAZ1 signal molecules. Our study provided a novel insight of CtACO3 affected the flavonoid biosynthesis in safflower.
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Affiliation(s)
- Beixuan He
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Yanjie Zhang
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Lunuan Wang
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Dandan Guo
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Xinlei Jia
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Jianhui Wu
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Shuyi Qi
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Hong Wu
- Department of Cardiology, Changhai Hospital of Naval Medical University (Second Military Medical University), Shanghai, China
- *Correspondence: Hong Wu,
| | - Yue Gao
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University (Second Military Medical University), Shanghai, China
- Yue Gao,
| | - Meili Guo
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University (Second Military Medical University), Shanghai, China
- Meili Guo,
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14
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Comparative Transcriptome Analysis Revealed Two Alternative Splicing bHLHs Account for Flower Color Alteration in Chrysanthemum. Int J Mol Sci 2021; 22:ijms222312769. [PMID: 34884575 PMCID: PMC8657904 DOI: 10.3390/ijms222312769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/20/2021] [Accepted: 11/23/2021] [Indexed: 12/13/2022] Open
Abstract
‘Jimba’ is a white chrysanthemum cultivar, which occasionally and spontaneously produces red flower petals under natural cultivation due to cyanidin-based anthocyanin accumulation. To investigate the underlying mechanism of this process, a comparative transcriptome was analyzed between white and turning red ‘Jimba’. The structural and regulatory genes of anthocyanin pathway were significantly up-regulated in turning red ‘Jimba’. Among them, two alternative splicings, CmbHLH2 and CmbHLH2.1, showed the most significantly up-regulated in turning red tissue. Transiently over-expressed 35S::CmMYB6-CmbHLH2 strongly induced anthocyanin accumulation in ‘Jimba’ flower petals, while moderate amount of anthocyanin was detected when over-expressed 35S::CmMYB6-CmbHLH2.1. Both CmbHLH2 and CmbHLH2.1 could interact with CmMYB6 to activate CmDFR promoter according to Yeast two-hybrid and dual-luciferase assay. Moreover, CmMYB6-CmbHLH2 but not CmMYB6-CmbHLH2.1 could activate the CmbHLH2 promoter to provide positive feedback loop regulation. Taken together, it suggested that both CmbHLH2 and CmbHLH2.1 involved in regulation flower color alteration in turning red ‘Jimba’, and CmbHLH2 played a predominant role in this process.
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15
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Yang T, Ma H, Li Y, Zhang Y, Zhang J, Wu T, Song T, Yao Y, Tian J. Apple MPK4 mediates phosphorylation of MYB1 to enhance light-induced anthocyanin accumulation. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 106:1728-1745. [PMID: 33835607 DOI: 10.1111/tpj.15267] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 05/04/2023]
Abstract
Anthocyanins are plant pigments with diverse biological functions that contribute to fruit quality and are beneficial to human health. Anthocyanin accumulation can be influenced by environmental signals, such as light, and plants have developed sophisticated systems to receive and transduce these signals. However, the associated molecular mechanisms are not well understood. In this study, we investigated the potential function of mitogen-activated protein kinases, which are members of the light signaling pathway, during light-induced anthocyanin accumulation in apple (Malus domestica) fruit peels. An antibody array and yeast two-hybrid screen indicated that proteins encoded by two MdMPK4 genes are light-activated and interact with the transcription factor and anthocyanin biosynthesis regulator MdMYB1. A phosphorylation assay showed that the MdMPK4 proteins phosphorylate MdMYB1, thereby increasing its stability under light conditions. Transient MdMPK4 and MdMYB1 overexpression assays further revealed that light-induced anthocyanin accumulation relies on MdMPK4 kinase activity, which is required for maximum MdMYB1 activity. Based on the expression of the chromosome 6 allele MdMPK4-06G under light conditions and the presence of light response elements in the MdMPK4-06G promoter, we concluded that it is more responsive to light than the chromosome 14 allele MdMPK4-14G. These results suggest a potential biotechnological strategy for increasing fruit anthocyanin content via light induction.
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Affiliation(s)
- Tuo Yang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Huaying Ma
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Yu Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Yan Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Jie Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Ting Wu
- College of Horticulture, China Agricultural University, Beijing, China
| | - Tingting Song
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Yuncong Yao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Ji Tian
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
- Plant Science and Technology College, Beijing University of Agriculture, Beijing, China
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16
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Current Understanding of bHLH Transcription Factors in Plant Abiotic Stress Tolerance. Int J Mol Sci 2021; 22:ijms22094921. [PMID: 34066424 PMCID: PMC8125693 DOI: 10.3390/ijms22094921] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/28/2021] [Accepted: 05/01/2021] [Indexed: 01/20/2023] Open
Abstract
Named for the characteristic basic helix-loop-helix (bHLH) region in their protein structure, bHLH proteins are a widespread transcription factor class in eukaryotes. bHLHs transcriptionally regulate their target genes by binding to specific positions on their promoters and thereby direct a variety of plant developmental and metabolic processes, such as photomorphogenesis, flowering induction, shade avoidance, and secondary metabolite biosynthesis, which are important for promoting plant tolerance or adaptation to adverse environments. In this review, we discuss the vital roles of bHLHs in plant responses to abiotic stresses, such as drought, salinity, cold, and iron deficiency. We suggest directions for future studies into the roles of bHLH genes in plant and discuss their potential applications in crop breeding.
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17
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Zhou L, Lu Y, Huang J, Sha Z, Mo W, Xue J, Ma S, Shi W, Yang Z, Gao J, Bian M. Arabidopsis CIB3 regulates photoperiodic flowering in an FKF1-dependent way. Biosci Biotechnol Biochem 2021; 85:765-774. [PMID: 33686404 DOI: 10.1093/bbb/zbaa120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 12/22/2020] [Indexed: 01/29/2023]
Abstract
Arabidopsis cryptochrome 2 (CRY2) and FLAVIN-BINDING, KELCH REPEAT, and F-BOX 1 (FKF1) are blue light receptors mediating light regulation of growth and development, such as photoperiodic flowering. CRY2 interacts with a basic helix-loop-helix transcription factor CIB1 in response to blue light to activate the transcription of the flowering integrator gene FLOWERING LOCUS T (FT). CIB1, CIB2, CIB4, and CIB5 function redundantly to promote flowering in a CRY2-dependent way and form various heterodimers to bind to the noncanonical E-box sequence in the FT promoter. However, the function of CIB3 has not been described. We discovered that CIB3 promotes photoperiodic flowering independently of CRY2. Moreover, CIB3 does not interact with CRY2 but interacts with CIB1 and functions synergistically with CIB1 to promote the transcription of the GI gene. FKF1 is required for CIB3 to promote flowering and enhances the CIB1-CIB3 interaction in response to blue light.
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Affiliation(s)
- Lianxia Zhou
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Yi Lu
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Jie Huang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Zhiwei Sha
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Weiliang Mo
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Jiayi Xue
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China.,Humen Foreign Language School, Dongguan, China
| | - Shuodan Ma
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Wuliang Shi
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Zhenming Yang
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Jie Gao
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
| | - Mingdi Bian
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun, China
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18
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Ikeda M, Mitsuda N, Ishizuka T, Satoh M, Ohme-Takagi M. The CIB1 transcription factor regulates light- and heat-inducible cell elongation via a two-step HLH/bHLH system. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:1795-1808. [PMID: 33258952 DOI: 10.1093/jxb/eraa567] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 11/30/2020] [Indexed: 05/14/2023]
Abstract
Light and high temperature promote plant cell elongation. PHYTOCHROME INTERACTING FACTOR4 (PIF4, a typical basic helix-loop-helix [bHLH] transcriptional activator) and the non-DNA binding atypical HLH inhibitors PHYTOCHROME RAPIDLY REGULATED1 (PAR1) and LONG HYPOCOTYL IN FAR-RED 1 (HFR1) competitively regulate cell elongation in response to light conditions and high temperature. However, the underlying mechanisms have not been fully clarified. Here, we show that in Arabidopsis thaliana, the bHLH transcription factor CRYPTOCHROME-INTERACTING BASIC HELIX-LOOP-HELIX 1 (CIB1) positively regulates cell elongation under the control of PIF4, PAR1, and HFR1. Furthermore, PIF4 directly regulates CIB1 expression by interacting with its promoter, and PAR1 and HFR1 interfere with PIF4 binding to the CIB1 promoter. CIB1 activates genes that function in cell elongation, and PAR1 interferes with the DNA binding activity of CIB1, thus suppressing cell elongation. Hence, two antagonistic HLH/bHLH systems, the PIF4-PAR1/HFR1 and CIB1-PAR1 systems, regulate cell elongation in response to light and high temperature. We thus demonstrate the important role of non-DNA binding small HLH proteins in the transcriptional regulation of cell elongation in plants.
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Affiliation(s)
- Miho Ikeda
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Nobutaka Mitsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Toru Ishizuka
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Mai Satoh
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Masaru Ohme-Takagi
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
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19
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Shah A, Tyagi S, Saratale GD, Guzik U, Hu A, Sreevathsa R, Reddy VD, Rai V, Mulla SI. A comprehensive review on the influence of light on signaling cross-talk and molecular communication against phyto-microbiome interactions. Crit Rev Biotechnol 2021; 41:370-393. [PMID: 33550862 DOI: 10.1080/07388551.2020.1869686] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Generally, plant growth, development, and their productivity are mainly affected by their growth rate and also depend on environmental factors such as temperature, pH, humidity, and light. The interaction between plants and pathogens are highly specific. Such specificity is well characterized by plants and pathogenic microbes in the form of a molecular signature such as pattern-recognition receptors (PRRs) and microbes-associated molecular patterns (MAMPs), which in turn trigger systemic acquired immunity in plants. A number of Arabidopsis mutant collections are available to investigate molecular and physiological changes in plants under the presence of different light conditions. Over the past decade(s), several studies have been performed by selecting Arabidopsis thaliana under the influence of red, green, blue, far/far-red, and white light. However, only few phenotypic and molecular based studies represent the modulatory effects in plants under the influence of green and blue lights. Apart from this, red light (RL) actively participates in defense mechanisms against several pathogenic infections. This evolutionary pattern of light sensitizes the pathologist to analyze a series of events in plants during various stress conditions of the natural and/or the artificial environment. This review scrutinizes the literature where red, blue, white, and green light (GL) act as sensory systems that affects physiological parameters in plants. Generally, white and RL are responsible for regulating various defense mechanisms, but, GL also participates in this process with a robust impact! In addition to this, we also focus on the activation of signaling pathways (salicylic acid and jasmonic acid) and their influence on plant immune systems against phytopathogen(s).
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Affiliation(s)
- Anshuman Shah
- CP College of Agriculture, Sardarkrushinagar Dantiwada Agriculture University, Dantiwada, India
| | - Shaily Tyagi
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
| | | | - Urszula Guzik
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Science, University of Silesia in Katowice, Katowice, Poland
| | - Anyi Hu
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment Chinese Academy of Sciences, Xiamen, China
| | | | - Vaddi Damodara Reddy
- Department of Biochemistry, School of Applied Sciences, REVA University, Bangalore, India
| | - Vandna Rai
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
| | - Sikandar I Mulla
- Department of Biochemistry, School of Applied Sciences, REVA University, Bangalore, India
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20
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Braynen J, Yang Y, Yuan J, Xie Z, Cao G, Wei X, Shi G, Zhang X, Wei F, Tian B. Comparative transcriptome analysis revealed differential gene expression in multiple signaling pathways at flowering in polyploid Brassica rapa. Cell Biosci 2021; 11:17. [PMID: 33436051 PMCID: PMC7802129 DOI: 10.1186/s13578-021-00528-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 01/03/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Polyploidy is widespread in angiosperms and has a significant impact on plant evolution, diversity, and breeding program. However, the changes in the flower development regulatory mechanism in autotetraploid plants remains relatively limited. In this study, RNA-seq analysis was used to investigate changes in signaling pathways at flowering in autotetraploid Brassica rapa. RESULTS The study findings showed that the key genes such as CO, CRY2, and FT which promotes floral formation were down-regulated, whereas floral transition genes FPF1 and FD were up-regulated in autotetraploid B. rapa. The data also demonstrated that the positive regulators GA1 and ELA1 in the gibberellin's biosynthesis pathway were negatively regulated by polyploidy in B. rapa. Furthermore, transcriptional factors (TFs) associated with flower development were significantly differentially expressed including the up-regulated CIB1 and AGL18, and the down-regulated AGL15 genes, and by working together such genes affected the expression of the down-stream flowering regulator FLOWERING LOCUS T in polyploid B. rapa. Compared with that in diploids autotetrapoid plants consist of differential expression within the signaling transduction pathway, with 13 TIFY gens up-regulated and 17 genes related to auxin pathway down-regulated. CONCLUSION Therefore, polyploidy is more likely to integrate multiple signaling pathways to influence flowering in B. rapa after polyploidization. In general, the present results shed new light on our global understanding of flowering regulation in polyploid plants during breeding program.
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Affiliation(s)
- Janeen Braynen
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.,Henan International Joint Laboratory of Crop Gene Resources and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yan Yang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Jiachen Yuan
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Zhengqing Xie
- Henan International Joint Laboratory of Crop Gene Resources and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Gangqiang Cao
- Henan International Joint Laboratory of Crop Gene Resources and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Xiaochun Wei
- Institute of Horticultural Research, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, Henan, China
| | - Gongyao Shi
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.,Henan International Joint Laboratory of Crop Gene Resources and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Xiaowei Zhang
- Institute of Horticultural Research, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, Henan, China
| | - Fang Wei
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China. .,Henan International Joint Laboratory of Crop Gene Resources and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.
| | - Baoming Tian
- Henan International Joint Laboratory of Crop Gene Resources and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.
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21
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Light-Regulated Transcription of a Mitochondrial-Targeted K + Channel. Cells 2020; 9:cells9112507. [PMID: 33228123 PMCID: PMC7699372 DOI: 10.3390/cells9112507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/15/2020] [Accepted: 11/17/2020] [Indexed: 02/06/2023] Open
Abstract
The inner membranes of mitochondria contain several types of K+ channels, which modulate the membrane potential of the organelle and contribute in this way to cytoprotection and the regulation of cell death. To better study the causal relationship between K+ channel activity and physiological changes, we developed an optogenetic platform for a light-triggered modulation of K+ conductance in mitochondria. By using the light-sensitive interaction between cryptochrome 2 and the regulatory protein CIB1, we can trigger the transcription of a small and highly selective K+ channel, which is in mammalian cells targeted into the inner membrane of mitochondria. After exposing cells to very low intensities (≤0.16 mW/mm2) of blue light, the channel protein is detectable as an accumulation of its green fluorescent protein (GFP) tag in the mitochondria less than 1 h after stimulation. This system allows for an in vivo monitoring of crucial physiological parameters of mitochondria, showing that the presence of an active K+ channel causes a substantial depolarization compatible with the effect of an uncoupler. Elevated K+ conductance also results in a decrease in the Ca2+ concentration in the mitochondria but has no impact on apoptosis.
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22
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Yan J, Li X, Zeng B, Zhong M, Yang J, Yang P, Li X, He C, Lin J, Liu X, Zhao X. FKF1 F-box protein promotes flowering in part by negatively regulating DELLA protein stability under long-day photoperiod in Arabidopsis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:1717-1740. [PMID: 32427421 DOI: 10.1111/jipb.12971] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 05/18/2020] [Indexed: 05/23/2023]
Abstract
FLAVIN-BINDING KELCH REPEAT F-BOX 1 (FKF1) encodes an F-box protein that regulates photoperiod flowering in Arabidopsis under long-day conditions (LDs). Gibberellin (GA) is also important for regulating flowering under LDs. However, how FKF1 and the GA pathway work in concert in regulating flowering is not fully understood. Here, we showed that the mutation of FKF1 could cause accumulation of DELLA proteins, which are crucial repressors in GA signaling pathway, thereby reducing plant sensitivity to GA in flowering. Both in vitro and in vivo biochemical analyses demonstrated that FKF1 directly interacted with DELLA proteins. Furthermore, we showed that FKF1 promoted ubiquitination and degradation of DELLA proteins. Analysis of genetic data revealed that FKF1 acted partially through DELLAs to regulate flowering under LDs. In addition, DELLAs exerted a negative feedback on FKF1 expression. Collectively, these findings demonstrate that FKF1 promotes flowering partially by negatively regulating DELLA protein stability under LDs, and suggesting a potential mechanism linking the FKF1 to the GA signaling DELLA proteins.
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Affiliation(s)
- Jindong Yan
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Xinmei Li
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Bingjie Zeng
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Ming Zhong
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Jiaxin Yang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Piao Yang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Xin Li
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
| | - Chongsheng He
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
| | - Jianzhong Lin
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
| | - Xuanming Liu
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
| | - Xiaoying Zhao
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China
- Shenzhen Institute, Hunan University, Shenzhen, 518057, China
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23
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Aslam M, Jakada BH, Fakher B, Greaves JG, Niu X, Su Z, Cheng Y, Cao S, Wang X, Qin Y. Genome-wide study of pineapple (Ananas comosus L.) bHLH transcription factors indicates that cryptochrome-interacting bHLH2 (AcCIB2) participates in flowering time regulation and abiotic stress response. BMC Genomics 2020; 21:735. [PMID: 33092537 PMCID: PMC7583237 DOI: 10.1186/s12864-020-07152-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 10/14/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Transcription factors (TFs) are essential regulators of growth and development in eukaryotes. Basic-helix-loop-helix (bHLHs) is one of the most significant TFs families involved in several critical regulatory functions. Cryptochrome-interacting bHLH (CIB) and cryptochromes form an extensive regulatory network to mediate a plethora of pathways. Although bHLHs regulate critical biological processes in plants, the information about pineapple bHLHs remains unexplored. RESULTS Here, we identified a total of 121 bHLH proteins in the pineapple genome. The identified genes were renamed based on the ascending order of their gene ID and classified into 18 subgroups by phylogenetic analysis. We found that bHLH genes are expressed in different organs and stages of pineapple development. Furthermore, by the ectopic expression of AcCIB2 in Arabidopsis and complementation of Atcib2 mutant, we verified the involvement of AcCIB2 in photomorphogenesis and abiotic stress response. CONCLUSIONS Our findings revealed that AcCIB2 plays an essential role in flowering time regulation and abiotic stress response. The present study provides additional insights into the current knowledge of bHLH genes and suggests their potential role in various biological processes during pineapple development.
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Affiliation(s)
- Mohammad Aslam
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,Guangxi Key Lab of Sugarcane Biology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Bello Hassan Jakada
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Beenish Fakher
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Joseph G Greaves
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Xiaoping Niu
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,Guangxi Key Lab of Sugarcane Biology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China
| | - Zhenxia Su
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Yan Cheng
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Shijiang Cao
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Xiaomei Wang
- Horticulture Research Institute, Guangxi Academy of Agricultural Sciences, Nanning Investigation Station of South Subtropical Fruit Trees, Ministry of Agriculture, Nanning, 530007, China.
| | - Yuan Qin
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China. .,Guangxi Key Lab of Sugarcane Biology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, 530004, Guangxi, China.
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24
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Li X, Liu C, Zhao Z, Ma D, Zhang J, Yang Y, Liu Y, Liu H. COR27 and COR28 Are Novel Regulators of the COP1-HY5 Regulatory Hub and Photomorphogenesis in Arabidopsis. THE PLANT CELL 2020; 32:3139-3154. [PMID: 32769132 PMCID: PMC7534460 DOI: 10.1105/tpc.20.00195] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 07/15/2020] [Accepted: 08/01/2020] [Indexed: 05/20/2023]
Abstract
Plants have evolved sensitive signaling systems to fine-tune photomorphogenesis in response to changing light environments. Light and low temperatures are known to regulate the expression of the COLD REGULATED (COR) genes COR27 and COR28, which influence the circadian clock, freezing tolerance, and flowering time. Blue light stabilizes the COR27 and COR28 proteins, but the underlying mechanism is unknown. We therefore performed a yeast two-hybrid screen using COR27- and COR28 as bait and identified the E3 ubiquitin ligase CONSTITUTIVE PHOTOMORPHOGENIC1 (COP1) as an interactor. COR27 and COR28 physically interact with COP1, which is in turn responsible for their degradation in the dark. Furthermore, COR27 and COR28 promote hypocotyl elongation and act as negative regulators of photomorphogenesis in Arabidopsis (Arabidopsis thaliana). Genome-wide gene expression analysis showed that HY5, COR27, and COR28 co-regulate many common genes. COR27 interacts directly with HY5 and associates with the promoters of the HY5 target genes HY5 and PIF4, then regulates their transcription together with HY5. Our results demonstrate that COR27 and COR28 act as key regulators in the COP1-HY5 regulatory hub, by regulating the transcription of HY5 target genes together with HY5 to ensure proper skotomorphogenic growth in the dark and photomorphogenic development in the light.
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Affiliation(s)
- Xu Li
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Institutes for Biological Sciences, the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
- University of the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Cuicui Liu
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Institutes for Biological Sciences, the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
- University of the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Zhiwei Zhao
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Institutes for Biological Sciences, the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
- University of the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Dingbang Ma
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Institutes for Biological Sciences, the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
- University of the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Jinyu Zhang
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Institutes for Biological Sciences, the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
- University of the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Yu Yang
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Institutes for Biological Sciences, the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
- University of the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Yawen Liu
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Institutes for Biological Sciences, the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Hongtao Liu
- National Key Laboratory of Plant Molecular Genetics, Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Institutes for Biological Sciences, the Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
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25
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Zou Y, Li R, Baldwin IT. ZEITLUPE is required for shade avoidance in the wild tobacco Nicotiana attenuata. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:1341-1351. [PMID: 31628717 DOI: 10.1111/jipb.12880] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 10/18/2019] [Indexed: 05/20/2023]
Abstract
Being shaded is a common environmental stress for plants, especially for densely planted crops. Shade decreases red: far-red (R:FR) ratios that inactivate phytochrome B (PHYB) and subsequently release p̱hytochrome i̱nteraction f̱actors (PIFs). Shaded plants display elongated hypocotyls, internodes, and petioles, hyponastic leaves, early flowering and are inhibited in branching: traits collectively called the shade avoidance syndrome (SAS). ZEITLUPE (ZTL) is a circadian clock component and blue light photoreceptor, which is also involved in floral rhythms and plant defense in Nicotiana attenuata. ztl mutants are hypersensitive to red light and ZTL physically interacts with PHYB, suggesting the involvement of ZTL in R:FR light signaling. Here, we show that N. attenuata ZTL-silenced plants display a phenotype opposite to that of the SAS under normal light. After simulated shade, the normally induced transcript levels of the SAS marker gene, ATHB2 are attenuated in ZTL-silenced plants. The auxin signaling pathway, known to be involved in SAS, was also significantly attenuated. Furthermore, NaZTL directly interacts with NaPHYBs, and regulates the transcript levels of PHYBs, PIF3a, PIF7 and PIF8 under shade. Our results suggest that ZTL may regulate PHYB- and the auxin-mediated signaling pathway, which functions in the SAS of N. attenuata.
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Affiliation(s)
- Yong Zou
- Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Jena, 07745, Germany
| | - Ran Li
- Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Jena, 07745, Germany
- Institute of Insect Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ian T Baldwin
- Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Jena, 07745, Germany
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26
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Li X, Wang HB, Jin HL. Light Signaling-Dependent Regulation of PSII Biogenesis and Functional Maintenance. PLANT PHYSIOLOGY 2020; 183:1855-1868. [PMID: 32439719 PMCID: PMC7401124 DOI: 10.1104/pp.20.00200] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 05/04/2020] [Indexed: 05/16/2023]
Abstract
Light is a key environmental cue regulating photomorphogenesis and photosynthesis in plants. However, the molecular mechanisms underlying the interaction between light signaling pathways and photosystem function are unknown. Here, we show that various monochromatic wavelengths of light cooperate to regulate PSII function in Arabidopsis (Arabidopsis thaliana). The photoreceptors cryptochromes and phytochromes modulate the expression of HIGH CHLOROPHYLL FLUORESCENCE173 (HCF173), which is required for PSII biogenesis by regulating PSII core protein D1 synthesis mediated by the transcription factor ELONGATED HYPOCOTYL5 (HY5). HY5 directly binds to the ACGT-containing element ACE motif and G-box cis-element present in the HCF173 promoter and regulates its activity. PSII activity was decreased significantly in hy5 mutants under various monochromatic wavelengths of light. Interestingly, we demonstrate that HY5 also directly regulates the expression of the genes associated with PSII assembly and repair, including ALBINO3, HCF136, HYPERSENSITIVE TO HIGH LIGHT1, etc., which is required for the functional maintenance of PSII under photodamaging conditions. Moreover, deficiency of HY5 broadly decreases the accumulation of other photosystem proteins besides PSII proteins. Thus, our study reveals an important role of light signaling in both biogenesis and functional regulation of the photosystem and provides insight into the link between light signaling and photosynthesis in land plants.
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Affiliation(s)
- Xue Li
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, 510275 Guangzhou, People's Republic of China
| | - Hong-Bin Wang
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, 510275 Guangzhou, People's Republic of China
- Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, 510006 Guangzhou, People's Republic of China
| | - Hong-Lei Jin
- Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, 510006 Guangzhou, People's Republic of China
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27
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Teixeira RT. Distinct Responses to Light in Plants. PLANTS 2020; 9:plants9070894. [PMID: 32679774 PMCID: PMC7411962 DOI: 10.3390/plants9070894] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/13/2020] [Accepted: 07/13/2020] [Indexed: 12/17/2022]
Abstract
The development of almost every living organism is, to some extent, regulated by light. When discussing light regulation on biological systems, one is referring to the sun that has long been positioned in the center of the solar system. Through light regulation, all life forms have evolved around the presence of the sun. As soon our planet started to develop an atmospheric shield against most of the detrimental solar UV rays, life invaded land, and in the presence of water, it thrived. Especially for plants, light (solar radiation) is the source of energy that controls a high number of developmental aspects of growth, a process called photomorphogenesis. Once hypocotyls reach soil′s surface, its elongation deaccelerates, and the photosynthetic apparatus is established for an autotrophic growth due to the presence of light. Plants can sense light intensities, light quality, light direction, and light duration through photoreceptors that accurately detect alterations in the spectral composition (UV-B to far-red) and are located throughout the plant. The most well-known mechanism promoted by light occurring on plants is photosynthesis, which converts light energy into carbohydrates. Plants also use light to signal the beginning/end of key developmental processes such as the transition to flowering and dormancy. These two processes are particularly important for plant´s yield, since transition to flowering reduces the duration of the vegetative stage, and for plants growing under temperate or boreal climates, dormancy leads to a complete growth arrest. Understanding how light affects these processes enables plant breeders to produce crops which are able to retard the transition to flowering and avoid dormancy, increasing the yield of the plant.
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Affiliation(s)
- Rita Teresa Teixeira
- BioISI-Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
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28
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Cortés Llorca L, Li R, Yon F, Schäfer M, Halitschke R, Robert CAM, Kim SG, Baldwin IT. ZEITLUPE facilitates the rhythmic movements of Nicotiana attenuata flowers. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:308-322. [PMID: 32130751 DOI: 10.1111/tpj.14732] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/31/2020] [Accepted: 02/24/2020] [Indexed: 06/10/2023]
Abstract
Circadian organ movements are ubiquitous in plants. These rhythmic outputs are thought to be regulated by the circadian clock and auxin signalling, but the underlying mechanisms have not been clarified. Flowers of Nicotiana attenuata change their orientation during the daytime through a 140° arc to balance the need for pollinators and the protection of their reproductive organs. This rhythmic trait is under the control of the circadian clock and results from bending and re-straightening movements of the pedicel, stems that connect flowers to the inflorescence. Using an explant system that allowed pedicel growth and curvature responses to be characterized with high spatial and temporal resolution, we demonstrated that this movement is organ autonomous and mediated by auxin. Changes in the growth curvature of the pedicel are accompanied by an auxin gradient and dorsiventral asymmetry in auxin-dependent transcriptional responses; application of auxin transport inhibitors influenced the normal movements of this organ. Silencing the expression of the circadian clock component ZEITLUPE (ZTL) arrested changes in the growth curvature of the pedicel and altered auxin signalling and responses. IAA19-like, an Aux/IAA transcriptional repressor that is circadian regulated and differentially expressed between opposite tissues of the pedicel, and therefore possibly involved in the regulation of changes in organ curvature, physically interacted with ZTL. Together, these results are consistent with a direct link between the circadian clock and the auxin signalling pathway in the regulation of this rhythmic floral movement.
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Affiliation(s)
- Lucas Cortés Llorca
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, 007745, Germany
| | - Ran Li
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, 007745, Germany
| | - Felipe Yon
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, 007745, Germany
| | - Martin Schäfer
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, 007745, Germany
| | - Rayko Halitschke
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, 007745, Germany
| | - Christelle A M Robert
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, 007745, Germany
| | - Sang-Gyu Kim
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, 007745, Germany
| | - Ian T Baldwin
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, 007745, Germany
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29
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Abstract
Cryptochromes are blue-light receptors that mediate photoresponses in plants. The genomes of most land plants encode two clades of cryptochromes, CRY1 and CRY2, which mediate distinct and overlapping photoresponses within the same species and between different plant species. Photoresponsive protein-protein interaction is the primary mode of signal transduction of cryptochromes. Cryptochromes exist as physiologically inactive monomers in the dark; the absorption of photons leads to conformational change and cryptochrome homooligomerization, which alters the affinity of cryptochromes interacting with cryptochrome-interacting proteins to form various cryptochrome complexes. These cryptochrome complexes, collectively referred to as the cryptochrome complexome, regulate transcription or stability of photoresponsive proteins to modulate plant growth and development. The activity of cryptochromes is regulated by photooligomerization; dark monomerization; cryptochrome regulatory proteins; and cryptochrome phosphorylation, ubiquitination, and degradation. Most of the more than 30 presently known cryptochrome-interacting proteins are either regulated by other photoreceptors or physically interactingwith the protein complexes of other photoreceptors. Some cryptochrome-interacting proteins are also hormonal signaling or regulatory proteins. These two mechanisms enable cryptochromes to integrate blue-light signals with other internal and external signals to optimize plant growth and development.
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Affiliation(s)
- Qin Wang
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chentao Lin
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, California 90095, USA;
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30
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Yang Y, Liu H. Coordinated Shoot and Root Responses to Light Signaling in Arabidopsis. PLANT COMMUNICATIONS 2020; 1:100026. [PMID: 33367230 PMCID: PMC7748005 DOI: 10.1016/j.xplc.2020.100026] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 05/05/2023]
Abstract
Light is one of the most important environmental signals and regulates many biological processes in plants. Studies on light-regulated development have mainly focused on aspects of shoot growth, such as de-etiolation, cotyledon opening, inhibition of hypocotyl elongation, flowering, and anthocyanin accumulation. However, recent studies have demonstrated that light is also involved in regulating root growth and development in Arabidopsis. In this review, we summarize the progress in understanding how shoots and roots coordinate their responses to light through different light-signaling components and pathways, including the COP1 (CONSTITUTIVELY PHOTOMORPHOGENIC 1), HY5 (ELONGATED HYPOCOTYL 5), and MYB73/MYB77 (MYB DOMAIN PROTEIN 73/77) pathways.
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Affiliation(s)
- Yu Yang
- National Key Laboratory of Plant Molecular Genetics (NKLPMG), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology (SIPPE), Chinese Academy of Sciences, 200032 Shanghai, P. R. China
- University of Chinese Academy of Sciences, Shanghai 200032, P. R. China
| | - Hongtao Liu
- National Key Laboratory of Plant Molecular Genetics (NKLPMG), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology (SIPPE), Chinese Academy of Sciences, 200032 Shanghai, P. R. China
- Corresponding author
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Li Y, Zhang C, Yang K, Shi J, Ding Y, Gao Z. De novo sequencing of the transcriptome reveals regulators of the floral transition in Fargesia macclureana (Poaceae). BMC Genomics 2019; 20:1035. [PMID: 31888463 PMCID: PMC6937737 DOI: 10.1186/s12864-019-6418-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 12/19/2019] [Indexed: 12/25/2022] Open
Abstract
Background Fargesia macclureana (Poaceae) is a woody bamboo species found on the Qinghai–Tibet Plateau (QTP) approximately 2000 ~ 3800 m above sea level. It rarely blossoms in the QTP, but it flowered 20 days after growing in our lab, which is in a low-altitude area outside the QTP. To date, little is known regarding the molecular mechanism of bamboo flowering, and no studies of flowering have been conducted on wild bamboo plants growing in extreme environments. Here, we report the first de novo transcriptome sequence for F. macclureana to investigate the putative mechanisms underlying the flowering time control used by F. macclureana to adapt to its environment. Results Illumina deep sequencing of the F. macclureana transcriptome generated 140.94 Gb of data, assembled into 99,056 unigenes. A comprehensive analysis of the broadly, specifically and differentially expressed unigenes (BEUs, SEUs and DEUs) indicated that they were mostly involved in metabolism and signal transduction, as well as DNA repair and plant-pathogen interactions, which may be of adaptive importance. In addition, comparison analysis between non-flowering and flowering tissues revealed that expressions of FmFT and FmHd3a, two putative F. macclureana orthologs, were differently regulated in NF- vs F- leaves, and carbohydrate metabolism and signal transduction were two major KEGG pathways that DEUs were enriched in. Finally, we detected 9296 simple sequence repeats (SSRs) that may be useful for further molecular marker-assisted breeding. Conclusions F. macclureana may have evolved specific reproductive strategies for flowering-related pathways in response to photoperiodic cues to ensure long vegetation growing period. Our findings will provide new insights to future investigations into the mechanisms of flowering time control and adaptive evolution in plants growing at high altitudes.
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Affiliation(s)
- Ying Li
- State Forestry and Grassland Administration Key Open Laboratory on the Science and Technology of Bamboo and Rattan, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Centre for Bamboo and Rattan, Beijing, 100102, China
| | - Chunxia Zhang
- Bamboo Research Institute, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Kebin Yang
- State Forestry and Grassland Administration Key Open Laboratory on the Science and Technology of Bamboo and Rattan, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Centre for Bamboo and Rattan, Beijing, 100102, China
| | - Jingjing Shi
- State Forestry and Grassland Administration Key Open Laboratory on the Science and Technology of Bamboo and Rattan, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Centre for Bamboo and Rattan, Beijing, 100102, China
| | - Yulong Ding
- Bamboo Research Institute, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Zhimin Gao
- State Forestry and Grassland Administration Key Open Laboratory on the Science and Technology of Bamboo and Rattan, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Centre for Bamboo and Rattan, Beijing, 100102, China.
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Wang F, Gao Y, Liu Y, Zhang X, Gu X, Ma D, Zhao Z, Yuan Z, Xue H, Liu H. BES1-regulated BEE1 controls photoperiodic flowering downstream of blue light signaling pathway in Arabidopsis. THE NEW PHYTOLOGIST 2019; 223:1407-1419. [PMID: 31009078 DOI: 10.1111/nph.15866] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 04/14/2019] [Indexed: 05/23/2023]
Abstract
BRI1-EMS-SUPPRESSOR 1 (BES1) functions as a key regulator in the brassinosteroid (BR) pathway that promotes plant growth. However, whether BES1 is involved in photoperiodic flowering is unknown. Here we report that BES1 acts as a positive regulator of photoperiodic flowering, but it cannot directly bind FLOWERING LOCUS T (FT) promoter. BR ENHANCED EXPRESSION 1 (BEE1) is the direct target of BES1 and acts downstream of BES1. BEE1 is also a positive regulator of photoperiodic flowering. BEE1 binds directly to the FT chromatin to activate the transcription of FT and promote flowering initiation. More importantly, BEE1 promotes flowering in a blue light photoreceptor CRYPTOCHROME 2 (CRY2) partially dependent manner, as it physically interacts with CRY2 under the blue light. Furthermore, BEE1 is regulated by both BRs and blue light. The transcription of BEE1 is induced by BRs, and the BEE1 protein is stabilized under the blue light. Our findings indicate that BEE1 is the integrator of BES1 and CRY2 mediating flowering, and BES1-BEE1-FT is a new signaling pathway in regulating photoperiodic flowering.
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Affiliation(s)
- Fei Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yongshun Gao
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture/College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Yawen Liu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Xin Zhang
- College of Life and Environmental Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Xingxing Gu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Dingbang Ma
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Zhiwei Zhao
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Zhenjiang Yuan
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Hongwei Xue
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, 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, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
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Yang LW, Wen XH, Fu JX, Dai SL. ClCRY2 facilitates floral transition in Chrysanthemum lavandulifolium by affecting the transcription of circadian clock-related genes under short-day photoperiods. HORTICULTURE RESEARCH 2018; 5:58. [PMID: 30393540 PMCID: PMC6210193 DOI: 10.1038/s41438-018-0063-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 05/26/2018] [Accepted: 06/04/2018] [Indexed: 05/23/2023]
Abstract
Plants sense photoperiod signals to confirm the optimal flowering time. Previous studies have shown that Cryptochrome2 (CRY2) functions to promote floral transition in the long-day plant (LDP) Arabidopsis; however, the function and molecular mechanism by which CRY2 regulates floral transition in short-day plants (SDPs) is still unclear. In this study, we identified a CRY2 homologous gene, ClCRY2, from Chrysanthemum lavandulifolium, a typical SDP. The morphological changes in the C. lavandulifolium shoot apex and ClFTs expression analysis under SD conditions showed that adult C. lavandulifolium completed the developmental transition from vegetative growth to reproductive growth after eight SDs. Meanwhile, ClCRY2 mRNA exhibited an increasing trend from 0 to 8 d of SD treatment. ClCRY2 overexpression in wild-type (WT) Arabidopsis and C. lavandulifolium resulted in early flowering. The transcript levels of the CONSTANS-like (COL) genes ClCOL1, ClCOL4, and ClCOL5, and FLOWERING LOCUS T (FT) homologous gene ClFT1 were upregulated in ClCRY2 overexpression (ClCRY2-OE) C. lavandulifolium under SD conditions. The transcript levels of some circadian clock-related genes, including PSEUDO-REPONSE REGULATOR 5 (PRR5), ZEITLUPE (ZTL), FLAVIN-BINDING KELCH REPEAT F-BOX 1 (FKF1), and GIGANTEA (GI-1 and GI-2), were upregulated in ClCRY2-OE C. lavandulifolium, while the expression levels of other circadian clock-related genes, such as EARLY FLOWERING 3 (ELF3), ELF4, LATE ELONGATED HYPOCOTYL (LHY), PRR73, and REVEILLE8 (RVE8), were downregulated in ClCRY2-OE C. lavandulifolium under SD conditions. Taken together, the results suggest that ClCRY2 promotes floral transition by fine-tuning the expression of circadian clock-related gene, ClCOLs and ClFT1 in C. lavandulifolium under SD conditions.
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Affiliation(s)
- Li-wen Yang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment and College of Landscape Architecture, Beijing Forestry University, Beijing, 100083 P. R. China
| | - Xiao-hui Wen
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment and College of Landscape Architecture, Beijing Forestry University, Beijing, 100083 P. R. China
| | - Jian-xin Fu
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment and College of Landscape Architecture, Beijing Forestry University, Beijing, 100083 P. R. China
| | - Si-lan Dai
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment and College of Landscape Architecture, Beijing Forestry University, Beijing, 100083 P. R. China
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Wang Q, Zuo Z, Wang X, Liu Q, Gu L, Oka Y, Lin C. Beyond the photocycle-how cryptochromes regulate photoresponses in plants? CURRENT OPINION IN PLANT BIOLOGY 2018; 45:120-126. [PMID: 29913346 PMCID: PMC6240499 DOI: 10.1016/j.pbi.2018.05.014] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 05/01/2018] [Accepted: 05/22/2018] [Indexed: 05/17/2023]
Abstract
Cryptochromes (CRYs) are blue light receptors that mediate light regulation of plant growth and development. Land plants possess various numbers of cryptochromes, CRY1 and CRY2, which serve overlapping and partially redundant functions in different plant species. Cryptochromes exist as physiologically inactive monomers in darkness; photoexcited cryptochromes undergo homodimerization to increase their affinity to the CRY-signaling proteins, such as CIBs (CRY2-interacting bHLH), PIFs (Phytochrome-Interacting Factors), AUX/IAA (Auxin/INDOLE-3-ACETIC ACID), and the COP1-SPAs (Constitutive Photomorphogenesis 1-Suppressors of Phytochrome A) complexes. These light-dependent protein-protein interactions alter the activity of the CRY-signaling proteins to change gene expression and developmental programs in response to light. In the meantime, photoexcitation also changes the affinity of cryptochromes to the CRY-regulatory proteins, such as BICs (Blue-light Inhibitors of CRYs) and PPKs (Photoregulatory Protein Kinases), to modulate the activity, modification, or abundance of cryptochromes and photosensitivity of plants in response to the changing light environment.
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Affiliation(s)
- Qin Wang
- Basic Forestry and Proteomics Research Center, UCLA-FAFU Joint Research Center on Plant Proteomics, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA.
| | - Zecheng Zuo
- Basic Forestry and Proteomics Research Center, UCLA-FAFU Joint Research Center on Plant Proteomics, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xu Wang
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Qing Liu
- Basic Forestry and Proteomics Research Center, UCLA-FAFU Joint Research Center on Plant Proteomics, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lianfeng Gu
- Basic Forestry and Proteomics Research Center, UCLA-FAFU Joint Research Center on Plant Proteomics, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yoshito Oka
- Basic Forestry and Proteomics Research Center, UCLA-FAFU Joint Research Center on Plant Proteomics, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chentao Lin
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA
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Li B, Kremling KAG, Wu P, Bukowski R, Romay MC, Xie E, Buckler ES, Chen M. Coregulation of ribosomal RNA with hundreds of genes contributes to phenotypic variation. Genome Res 2018; 28:1555-1565. [PMID: 30166407 PMCID: PMC6169892 DOI: 10.1101/gr.229716.117] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 08/29/2018] [Indexed: 12/16/2022]
Abstract
Ribosomal repeats occupy 5% of a plant genome, yet there has been little study of their diversity in the modern age of genomics. Ribosomal copy number and expression variation present an opportunity to tap a novel source of diversity. In the present study, we estimated the ribosomal DNA (rDNA) copy number and ribosomal RNA (rRNA) expression for a population of maize inbred lines and investigated the potential role of rDNA and rRNA dosage in regulating global gene expression. Extensive variation was found in both ribosomal DNA copy number and ribosomal RNA expression among maize inbred lines. However, rRNA abundance was not consistent with the copy number of the rDNA. We have not found that the rDNA gene dosage has a regulatory role in gene expression; however, thousands of genes are identified to be coregulated with rRNA expression, including genes participating in ribosome biogenesis and other functionally relevant pathways. We further investigated the potential roles of copy number and the expression level of rDNA on agronomic traits and found that both correlated with flowering time but through different regulatory mechanisms. This comprehensive analysis suggested that rRNA expression variation is a valuable source of functional diversity that affects gene expression variation and field-based phenotypic changes.
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Affiliation(s)
- Bo Li
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China 100101
- Institute for Genomic Diversity, Cornell University, Ithaca, New York 14853, USA
| | - Karl A G Kremling
- School of Integrative Plant Sciences, Section of Plant Breeding and Genetics, Cornell University, Ithaca, New York 14853, USA
| | - Penghao Wu
- Institute for Genomic Diversity, Cornell University, Ithaca, New York 14853, USA
- College of Agronomy, Xinjiang Agriculture University, Urumqi, China 830052
| | - Robert Bukowski
- Bioinformatics Facility, Institute of Biotechnology, Cornell University, Ithaca, New York 14853, USA
| | - Maria C Romay
- Institute for Genomic Diversity, Cornell University, Ithaca, New York 14853, USA
| | - En Xie
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China 100101
| | - Edward S Buckler
- Institute for Genomic Diversity, Cornell University, Ithaca, New York 14853, USA
- School of Integrative Plant Sciences, Section of Plant Breeding and Genetics, Cornell University, Ithaca, New York 14853, USA
- US Department of Agriculture-Agricultural Research Service (USDA-ARS), Ithaca, New York 14853, USA
| | - Mingsheng Chen
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China 100101
- University of Chinese Academy of Sciences, Beijing, China 100049
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36
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Marchetti CF, Škrabišová M, Galuszka P, Novák O, Causin HF. Blue light suppression alters cytokinin homeostasis in wheat leaves senescing under shading stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 130:647-657. [PMID: 30142601 DOI: 10.1016/j.plaphy.2018.08.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/19/2018] [Accepted: 08/06/2018] [Indexed: 05/17/2023]
Abstract
Blue light (BL) suppression accelerates the senescence rate of wheat (Triticum aestivum L.) leaves exposed to shading. In order to study whether this effect involves the alteration of different cytokinin (CK) metabolites, CK-degradation, as well as the expression profile of genes responsible of CK-perception, -inactivation, -reactivation and/or -turnover, leaf segments of 30 day-old plants were placed in boxes containing bi-distilled water and covered with blue (B) or green (G) light filters, which supplied a similar irradiance but differed in the percentage of BL transmitted (G << B). A neutral (N) filter was used as control. When appropriate, different CK metabolites or an inhibitor of CK-degradation were added in order to alter the endogenous CK levels. A rapid decrement of trans-zeatin (tZ) and cis-zeatin (cZ) content was observed after leaf excision, which progressed at a higher rate in treatment G than in the control and B treatments. Senescence progression correlated with an accumulation of glycosylated forms (particularly cZ-derivatives), and an increment of CK-degradation, both of which were slowed in the presence of BL. On the contrary, CK-reactivation (analyzed through TaGLU1-3 expression) was delayed in the absence of BL. When different CK were exogenously supplied, tZ was the only natural free base capable to emulate the senescence-retarding effect of BL. Even though the signaling components involved in the regulation of senescence rate and CK-homeostasis by BL remain elusive, our data suggest that changes in the expression profile and/or functioning of the transcription factor HY5 might play an important role.
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Affiliation(s)
- Cintia F Marchetti
- Department of Molecular Biology, Centre of the Region of Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University. Šlechtitelů 27, 783 71 Olomouc. Czech Republic.
| | - Mária Škrabišová
- Department of Molecular Biology, Centre of the Region of Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University. Šlechtitelů 27, 783 71 Olomouc. Czech Republic.
| | - Petr Galuszka
- Department of Molecular Biology, Centre of the Region of Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University. Šlechtitelů 27, 783 71 Olomouc. Czech Republic.
| | - Ondřej Novák
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University & Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Šlechtitelů 27, 783 71 Olomouc. Czech Republic.
| | - Humberto F Causin
- Institute of Biodiversity, Experimental and Applied Biology (IBBEA), CONICET-UBA, Department of Biodiversity and Experimental Biology (DBBE), University of Buenos Aires, Faculty of Exact and Natural Sciences, Ciudad Universitaria, Pab. II, C1428EGA, C.A.B.A. Argentina.
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37
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Liu Y, Li X, Ma D, Chen Z, Wang JW, Liu H. CIB1 and CO interact to mediate CRY2-dependent regulation of flowering. EMBO Rep 2018; 19:embr.201845762. [PMID: 30126927 DOI: 10.15252/embr.201845762] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 07/30/2018] [Accepted: 08/02/2018] [Indexed: 11/09/2022] Open
Abstract
Cryptochromes are photolyase-like photoreceptors. Arabidopsis CRY2 (cryptochrome 2) primarily mediates the photoperiodic regulation of floral initiation. CRY2 has been shown to promote FT (FLOWERING LOCUS T) mRNA expression in response to blue light by suppressing the degradation of the CO (CONSTANS) protein and activating CIB1 (CRY2-interacting bHLH1). Although CIB1 and CO are both transcriptional activators of FT, their relationship is unknown. Here, we show that CIB1 physically interacts with CO and promotes FT transcription in a CO-dependent manner. CRY2, CIB1, and CO form a protein complex in response to blue light to activate FT transcription, and the complex is regulated by the photoperiod and peaks at dusk along with higher FT expression. We also determined that CRY2 was recruited to the FT chromatin by CIB1 and CO and that all three proteins are bound to the same region within the FT promoter. Therefore, there is crosstalk between the CRY2-CO and CRY2-CIBs pathways, and CIB1 and CO act together to regulate FT transcription and flowering.
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Affiliation(s)
- Yawen 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, China.,University of Chinese Academy of Sciences, Shanghai, China
| | - Xu Li
- 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, China
| | - Dingbang Ma
- 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, China.,University of Chinese Academy of Sciences, Shanghai, China
| | - Ziru Chen
- 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, China.,University of Chinese Academy of Sciences, Shanghai, China
| | - Jia-Wei Wang
- 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, 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, China
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38
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Lee CM, Feke A, Li MW, Adamchek C, Webb K, Pruneda-Paz J, Bennett EJ, Kay SA, Gendron JM. Decoys Untangle Complicated Redundancy and Reveal Targets of Circadian Clock F-Box Proteins. PLANT PHYSIOLOGY 2018; 177:1170-1186. [PMID: 29794020 PMCID: PMC6052990 DOI: 10.1104/pp.18.00331] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/07/2018] [Indexed: 05/11/2023]
Abstract
Eukaryotic circadian clocks utilize the ubiquitin proteasome system to precisely degrade clock proteins. In plants, the F-box-type E3 ubiquitin ligases ZEITLUPE (ZTL), FLAVIN-BINDING, KELCH REPEAT, F-BOX1 (FKF1), and LOV KELCH PROTEIN2 (LKP2) regulate clock period and couple the clock to photoperiodic flowering in response to end-of-day light conditions. To better understand their functions, we expressed decoy ZTL, FKF1, and LKP2 proteins that associate with target proteins but are unable to ubiquitylate their targets in Arabidopsis (Arabidopsis thaliana). These dominant-negative forms of the proteins inhibit the ubiquitylation of target proteins and allow for the study of ubiquitylation-independent and -dependent functions of ZTL, FKF1, and LKP2. We demonstrate the effects of expressing ZTL, FKF1, and LKP2 decoys on the circadian clock and flowering time. Furthermore, the decoy E3 ligases trap substrate interactions, and using immunoprecipitation-mass spectrometry, we identify interacting partners. We focus studies on the clock transcription factor CCA1 HIKING EXPEDITION (CHE) and show that ZTL interacts directly with CHE and can mediate CHE ubiquitylation. We also demonstrate that CHE protein is degraded in the dark and that degradation is reduced in a ztl mutant plant, showing that CHE is a bona fide ZTL target protein. This work increases our understanding of the genetic and biochemical roles for ZTL, FKF1, and LKP2 and also demonstrates an effective methodology for studying complicated genetic redundancy among E3 ubiquitin ligases.
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Affiliation(s)
- Chin-Mei Lee
- Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut 06511
| | - Ann Feke
- Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut 06511
| | - Man-Wah Li
- Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut 06511
| | - Christopher Adamchek
- Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut 06511
| | - Kristofor Webb
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California, San Diego, La Jolla, California 92093
| | - José Pruneda-Paz
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California, San Diego, La Jolla, California 92093
| | - Eric J Bennett
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California, San Diego, La Jolla, California 92093
| | - Steve A Kay
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, California 90089
| | - Joshua M Gendron
- Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut 06511
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Islam W. CRISPR-Cas9; an efficient tool for precise plant genome editing. Mol Cell Probes 2018; 39:47-52. [PMID: 29621557 DOI: 10.1016/j.mcp.2018.03.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 03/30/2018] [Accepted: 03/31/2018] [Indexed: 01/09/2023]
Abstract
Efficient plant genome editing is dependent upon induction of double stranded DNA breaks (DSBs) through site specified nucleases. These DSBs initiate the process of DNA repair which can either base upon homologous recombination (HR) or non-homologous end jointing (NHEJ). Recently, CRISPR-Cas9 mechanism got highlighted as revolutionizing genetic tool due to its simpler frame work along with the broad range of adaptability and applications. So, in this review, I have tried to sum up the application of this biotechnological tool in plant genome editing. Furthermore, I have tried to explain successful adaptation of CRISPR in various plant species where it is used for the successful generation of stable mutations in a steadily growing number of species through NHEJ. The review also sheds light upon other biotechnological approaches relying upon single DNA lesion induction such as genomic deletion or pair wise nickases for evasion of offsite effects.
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Affiliation(s)
- Waqar Islam
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fuzhou, 350002, China; Govt.of Punjab, Agriculture Department, Lahore, Pakistan.
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40
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Yang Y, Liang T, Zhang L, Shao K, Gu X, Shang R, Shi N, Li X, Zhang P, Liu H. UVR8 interacts with WRKY36 to regulate HY5 transcription and hypocotyl elongation in Arabidopsis. NATURE PLANTS 2018; 4:98-107. [PMID: 29379156 DOI: 10.1038/s41477-017-0099-0] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 12/27/2017] [Indexed: 05/20/2023]
Abstract
UV RESISTANCE LOCUS 8 (UVR8) is an ultraviolet-B (UVB) radiation photoreceptor that mediates light responses in plants. How plant UVR8 acts in response to UVB light is not well understood. Here, we report the identification and characterization of the Arabidopsis WRKY DNA-BINDING PROTEIN 36 (WRKY36) protein. WRKY36 interacts with UVR8 in yeast and Arabidopsis cells and it promotes hypocotyl elongation by inhibiting HY5 transcription. Inhibition of hypocotyl elongation under UVB requires the inhibition of WRKY36. WRKY36 binds to the W-box motif of the HY5 promoter to inhibit its transcription, while nuclear localized UVR8 directly interacts with WRKY36 to inhibit WRKY36-DNA binding both in vitro and in vivo, leading to the release of inhibition of HY5 transcription. These results indicate that WRKY36 is a negative regulator of HY5 and that UVB represses WRKY36 via UVR8 to promote the transcription of HY5 and photomorphogenesis. The UVR8-WRKY36 interaction in the nucleus represents a novel mechanism of early UVR8 signal transduction in Arabidopsis.
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Affiliation(s)
- Yu Yang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- Shanghai College of Life Science, University of Chinese Academy of Sciences, Shanghai, China
| | - Tong Liang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- Shanghai College of Life Science, University of Chinese Academy of Sciences, Shanghai, China
| | - Libo Zhang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Kai Shao
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- Shanghai College of Life Science, University of Chinese Academy of Sciences, Shanghai, China
| | - Xingxing Gu
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- Shanghai College of Life Science, University of Chinese Academy of Sciences, Shanghai, China
| | - Ruixin Shang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- Shanghai College of Life Science, University of Chinese Academy of Sciences, Shanghai, China
| | - Nan Shi
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Xu Li
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Peng Zhang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Hongtao Liu
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China.
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UVR8 Interacts with BES1 and BIM1 to Regulate Transcription and Photomorphogenesis in Arabidopsis. Dev Cell 2018; 44:512-523.e5. [PMID: 29398622 DOI: 10.1016/j.devcel.2017.12.028] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/23/2017] [Accepted: 12/28/2017] [Indexed: 11/24/2022]
Abstract
UV-B light (UV-B radiation) is known to inhibit plant growth, but the mechanism is not well understood. UVR8 (UV RESISTANCE LOCUS 8) is a UV-B light photoreceptor that mediates UV-B light responses in plants. We report here that UV-B inhibits plant growth by repressing plant steroid hormone brassinosteroid (BR)-promoted plant growth. UVR8 physically interacts with the functional dephosphorylated BES1 (BRI1-EMS-SUPPRESSOR1) and BIM1 (BES1-INTERACTING MYC-LIKE 1) transcription factors that mediate BR-regulated gene expression and plant growth to inhibit their activities. Genome-wide gene expression analysis defined a BES1-dependent UV-B-regulated transcriptome, which is enriched with genes involved in cell elongation and plant growth. We further showed that UV-B-activated and nucleus-localized UVR8 inhibited the DNA-binding activities of BES1/BIM1 to directly regulate transcription of growth-related genes. Our results therefore establish that UVR8-BES1/BIM1 interaction represents an early photoreceptor signaling mechanism in plants and serves as an important module integrating light and BR signaling.
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Zhang X, Jayaweera D, Peters JL, Szecsi J, Bendahmane M, Roberts JA, González-Carranza ZH. The Arabidopsis thaliana F-box gene HAWAIIAN SKIRT is a new player in the microRNA pathway. PLoS One 2017; 12:e0189788. [PMID: 29244865 PMCID: PMC5731758 DOI: 10.1371/journal.pone.0189788] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 12/03/2017] [Indexed: 11/26/2022] Open
Abstract
In Arabidopsis, the F-box HAWAIIAN SKIRT (HWS) protein is important for organ growth. Loss of function of HWS exhibits pleiotropic phenotypes including sepal fusion. To dissect the HWS role, we EMS-mutagenized hws-1 seeds and screened for mutations that suppress hws-1 associated phenotypes. We identified shs-2 and shs-3 (suppressor of hws-2 and 3) mutants in which the sepal fusion phenotype of hws-1 was suppressed. shs-2 and shs-3 (renamed hst-23/hws-1 and hst-24/hws-1) carry transition mutations that result in premature terminations in the plant homolog of Exportin-5 HASTY (HST), known to be important in miRNA biogenesis, function and transport. Genetic crosses between hws-1 and mutant lines for genes in the miRNA pathway also suppress the phenotypes associated with HWS loss of function, corroborating epistatic relations between the miRNA pathway genes and HWS. In agreement with these data, accumulation of miRNA is modified in HWS loss or gain of function mutants. Our data propose HWS as a new player in the miRNA pathway, important for plant growth.
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Affiliation(s)
- Xuebin Zhang
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, United Kingdom
| | - Dasuni Jayaweera
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, United Kingdom
| | - Janny L. Peters
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - Judit Szecsi
- Laboratoire Reproduction et Développement des Plantes, Univ Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, CNRS, INRA, Lyon, France
| | - Mohammed Bendahmane
- Laboratoire Reproduction et Développement des Plantes, Univ Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, CNRS, INRA, Lyon, France
| | - Jeremy A. Roberts
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, United Kingdom
| | - Zinnia H. González-Carranza
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, United Kingdom
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43
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Zhou Q, Han D, Mason AS, Zhou C, Zheng W, Li Y, Wu C, Fu D, Huang Y. Earliness traits in rapeseed (Brassica napus): SNP loci and candidate genes identified by genome-wide association analysis. DNA Res 2017; 25:229-244. [PMID: 29236947 PMCID: PMC6014513 DOI: 10.1093/dnares/dsx052] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 11/14/2017] [Indexed: 11/29/2022] Open
Abstract
Life cycle timing is critical for yield and productivity of Brassica napus (rapeseed) cultivars grown in different environments. To facilitate breeding for earliness traits in rapeseed, SNP loci and underlying candidate genes associated with the timing of initial flowering, maturity and final flowering, as well as flowering period (FP) were investigated in two environments in a diversity panel comprising 300 B. napus inbred lines. Genome-wide association studies (GWAS) using 201,817 SNP markers previously developed from SLAF-seq (specific locus amplified fragment sequencing) revealed a total of 131 SNPs strongly linked (P < 4.96E-07) to the investigated traits. Of these 131 SNPs, 40 fell into confidence intervals or were physically adjacent to previously published flowering time QTL or SNPs. Phenotypic effect analysis detected 35 elite allelic variants for early maturing, and 90 for long FP. Candidate genes present in the same linkage disequilibrium blocks (r2>0.6) or in 100 kb regions around significant trait-associated SNPs were screened, revealing 57 B. napus genes (33 SNPs) orthologous to 39 Arabidopsis thaliana flowering time genes. These results support the practical and scientific value of novel large-scale SNP data generation in uncovering the genetic control of agronomic traits in B. napus, and also provide a theoretical basis for molecular marker-assisted selection of earliness breeding in rapeseed.
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Affiliation(s)
- Qinghong Zhou
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Depeng Han
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Annaliese S Mason
- Plant Breeding Department, IFZ Research Centre for Biosystems, Land Use and Nutrition, Justus Liebig University, Giessen 35392, Germany
| | - Can Zhou
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Wei Zheng
- Jiangxi Institute of Red Soil, Jinxian, 331717, China
| | - Yazhen Li
- Jiangxi Institute of Red Soil, Jinxian, 331717, China
| | - Caijun Wu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Donghui Fu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yingjin Huang
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang 330045, China
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44
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Gil KE, Park CM. Protein quality control is essential for the circadian clock in plants. PLANT SIGNALING & BEHAVIOR 2017; 12:e1407019. [PMID: 29172942 PMCID: PMC5792131 DOI: 10.1080/15592324.2017.1407019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 11/14/2017] [Indexed: 05/19/2023]
Abstract
Extreme environmental conditions, such as heat and cold, often disturb cellular proteostasis, resulting in protein denaturation and oxidative damage that threaten cell viability. Therefore, living organisms have evolved versatile protein quality control mechanisms that clear damaged proteins from cellular compartments. It has been shown that a repertoire of molecular chaperones, including heat shock proteins (HSPs), works together with ubiquitin-proteasome systems in this biochemical process in animals and yeast. However, the protein quality control systems have not been well-characterized in plants. We have recently reported that the E3 ubiquitin ligase ZEITLUPE (ZTL), a central component of the plant circadian clock, constitutes a protein quality control system in conjunction with HSP90, which is responsible for clearing denatured protein aggregates at high temperatures. The ZTL-HSP90 protein complexes are colocalized in insoluble fractions in heat-exposed plants. Notably, lack of ZTL reduces protein polyubiquitination and disrupts the robustness of circadian rhythms under heat stress conditions, providing a novel role of ZTL: it mediates a heat-responsive protein quality control to sustain the clock function. We summarize the potential roles of ZTL in thermal responses and stability of the circadian clock in plants.
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Affiliation(s)
- Kyung-Eun Gil
- Department of Chemistry, Seoul National University, Seoul, Korea
| | - Chung-Mo Park
- Department of Chemistry, Seoul National University, Seoul, Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, Korea
- CONTACT Chung-Mo Park Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
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45
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Matsoukas IG. Crosstalk between Photoreceptor and Sugar Signaling Modulates Floral Signal Transduction. Front Physiol 2017; 8:382. [PMID: 28659814 PMCID: PMC5466967 DOI: 10.3389/fphys.2017.00382] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 05/22/2017] [Indexed: 11/13/2022] Open
Abstract
Over the past decade, integrated genetic, cellular, proteomic and genomic approaches have begun to unravel the surprisingly crosstalk between photoreceptors and sugar signaling in regulation of floral signal transduction. Although a number of physiological factors in the pathway have been identified, the molecular genetic interactions of some components are less well understood. The further elucidation of the crosstalk mechanisms between photoreceptors and sugar signaling will certainly contribute to our better understanding of the developmental circuitry that controls floral signal transduction. This article summarizes our current knowledge of this crosstalk, which has not received much attention, and suggests possible directions for future research.
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Affiliation(s)
- Ianis G Matsoukas
- School of Life Sciences, University of WarwickCoventry, United Kingdom
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46
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Czapiński J, Kiełbus M, Kałafut J, Kos M, Stepulak A, Rivero-Müller A. How to Train a Cell-Cutting-Edge Molecular Tools. Front Chem 2017; 5:12. [PMID: 28344971 PMCID: PMC5344921 DOI: 10.3389/fchem.2017.00012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 02/20/2017] [Indexed: 12/28/2022] Open
Abstract
In biological systems, the formation of molecular complexes is the currency for all cellular processes. Traditionally, functional experimentation was targeted to single molecular players in order to understand its effects in a cell or animal phenotype. In the last few years, we have been experiencing rapid progress in the development of ground-breaking molecular biology tools that affect the metabolic, structural, morphological, and (epi)genetic instructions of cells by chemical, optical (optogenetic) and mechanical inputs. Such precise dissection of cellular processes is not only essential for a better understanding of biological systems, but will also allow us to better diagnose and fix common dysfunctions. Here, we present several of these emerging and innovative techniques by providing the reader with elegant examples on how these tools have been implemented in cells, and, in some cases, organisms, to unravel molecular processes in minute detail. We also discuss their advantages and disadvantages with particular focus on their translation to multicellular organisms for in vivo spatiotemporal regulation. We envision that further developments of these tools will not only help solve the processes of life, but will give rise to novel clinical and industrial applications.
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Affiliation(s)
- Jakub Czapiński
- Department of Biochemistry and Molecular Biology, Medical University of LublinLublin, Poland
- Postgraduate School of Molecular Medicine, Medical University of WarsawWarsaw, Poland
| | - Michał Kiełbus
- Department of Biochemistry and Molecular Biology, Medical University of LublinLublin, Poland
| | - Joanna Kałafut
- Department of Biochemistry and Molecular Biology, Medical University of LublinLublin, Poland
| | - Michał Kos
- Department of Biochemistry and Molecular Biology, Medical University of LublinLublin, Poland
| | - Andrzej Stepulak
- Department of Biochemistry and Molecular Biology, Medical University of LublinLublin, Poland
| | - Adolfo Rivero-Müller
- Department of Biochemistry and Molecular Biology, Medical University of LublinLublin, Poland
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi UniversityTurku, Finland
- Department of Biosciences, Åbo Akademi UniversityTurku, Finland
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47
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Yang Z, Liu B, Su J, Liao J, Lin C, Oka Y. Cryptochromes Orchestrate Transcription Regulation of Diverse Blue Light Responses in Plants. Photochem Photobiol 2017; 93:112-127. [PMID: 27861972 DOI: 10.1111/php.12663] [Citation(s) in RCA: 290] [Impact Index Per Article: 41.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 11/02/2016] [Indexed: 11/30/2022]
Abstract
Blue light affects many aspects of plant growth and development throughout the plant lifecycle. Plant cryptochromes (CRYs) are UV-A/blue light photoreceptors that play pivotal roles in regulating blue light-mediated physiological responses via the regulated expression of more than one thousand genes. Photoactivated CRYs regulate transcription via two distinct mechanisms: indirect promotion of the activity of transcription factors by inactivation of the COP1/SPA E3 ligase complex or direct activation or inactivation of at least two sets of basic helix-loop-helix transcription factor families by physical interaction. Hence, CRYs govern intricate mechanisms that modulate activities of transcription factors to regulate multiple aspects of blue light-responsive photomorphogenesis. Here, we review recent progress in dissecting the pathways of CRY signaling and discuss accumulating evidence that shows how CRYs regulate broad physiological responses to blue light.
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Affiliation(s)
- Zhaohe Yang
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Bobin Liu
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China.,College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jun Su
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jiakai Liao
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Chentao Lin
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA
| | - Yoshito Oka
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, China
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48
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Shim JS, Kubota A, Imaizumi T. Circadian Clock and Photoperiodic Flowering in Arabidopsis: CONSTANS Is a Hub for Signal Integration. PLANT PHYSIOLOGY 2017; 173:5-15. [PMID: 27688622 PMCID: PMC5210731 DOI: 10.1104/pp.16.01327] [Citation(s) in RCA: 188] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 09/27/2016] [Indexed: 05/19/2023]
Abstract
The circadian clock and light signaling regulate CONSTANS function through intricate mechanisms that reside in phloem companion cells of leaves for controlling photoperiodic flowering in Arabidopsis.
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Affiliation(s)
- Jae Sung Shim
- Department of Biology, University of Washington, Seattle, Washington 98195-1800 (J.S.S., A.K., T.I.)
| | - Akane Kubota
- Department of Biology, University of Washington, Seattle, Washington 98195-1800 (J.S.S., A.K., T.I.)
| | - Takato Imaizumi
- Department of Biology, University of Washington, Seattle, Washington 98195-1800 (J.S.S., A.K., T.I.)
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49
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Li X, Ma D, Lu SX, Hu X, Huang R, Liang T, Xu T, Tobin EM, Liu H. Blue Light- and Low Temperature-Regulated COR27 and COR28 Play Roles in the Arabidopsis Circadian Clock. THE PLANT CELL 2016; 28:2755-2769. [PMID: 27837007 PMCID: PMC5155342 DOI: 10.1105/tpc.16.00354] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 10/18/2016] [Accepted: 11/11/2016] [Indexed: 05/18/2023]
Abstract
Light and temperature are two key environmental signals that profoundly affect plant growth and development, but underlying molecular mechanisms of how light and temperature signals affect the circadian clock are largely unknown. Here, we report that COR27 and COR28 are regulated not only by low temperatures but also by light signals. COR27 and COR28 are negative regulators of freezing tolerance but positive regulators of flowering, possibly representing a trade-off between freezing tolerance and flowering. Furthermore, loss-of-function mutations in COR27 and COR28 result in period lengthening of various circadian output rhythms and affect central clock gene expression. Also, the cor27 cor28 double mutation affects the pace of the circadian clock. Additionally, COR27 and COR28 are direct targets of CCA1, which represses their transcription via chromatin binding. Finally, we report that COR27 and COR28 bind to the chromatin of TOC1 and PRR5 to repress their transcription, suggesting that their effects on rhythms are in part due to their regulation of TOC1 and PRR5 These data demonstrate that blue light and low temperature-regulated COR27 and COR28 regulate the circadian clock as well as freezing tolerance and flowering time.
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Affiliation(s)
- Xu Li
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032 Shanghai, P.R. China
| | - Dingbang Ma
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032 Shanghai, P.R. China
- University of Chinese Academy of Sciences, Shanghai 200032, P.R. China
| | - Sheen X Lu
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, California 90095
| | - Xinyi Hu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032 Shanghai, P.R. China
- University of Chinese Academy of Sciences, Shanghai 200032, P.R. China
| | - Rongfeng Huang
- University of Chinese Academy of Sciences, Shanghai 200032, P.R. China
- Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Center for Plant Stress Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 201602 Shanghai, P.R. China
| | - Tong Liang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032 Shanghai, P.R. China
- University of Chinese Academy of Sciences, Shanghai 200032, P.R. China
| | - Tongda Xu
- Chinese Academy of Sciences Center for Excellence in Molecular Plant Sciences, Shanghai Center for Plant Stress Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 201602 Shanghai, P.R. China
| | - Elaine M Tobin
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, California 90095
| | - Hongtao Liu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032 Shanghai, P.R. China
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50
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Li S, Wang W, Gao J, Yin K, Wang R, Wang C, Petersen M, Mundy J, Qiu JL. MYB75 Phosphorylation by MPK4 Is Required for Light-Induced Anthocyanin Accumulation in Arabidopsis. THE PLANT CELL 2016; 28:2866-2883. [PMID: 27811015 PMCID: PMC5155340 DOI: 10.1105/tpc.16.00130] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 10/19/2016] [Accepted: 11/02/2016] [Indexed: 05/19/2023]
Abstract
Light is a major environmental cue affecting various physiological and metabolic processes in plants. Although plant photoreceptors are well characterized, the mechanisms by which light regulates downstream responses are less clear. In Arabidopsis thaliana, the accumulation of photoprotective anthocyanin pigments is light dependent, and the R2R3 MYB transcription factor MYB75/PAP1 regulates anthocyanin accumulation. Here, we report that MYB75 interacts with and is phosphorylated by MAP KINASE4 (MPK4). Their interaction is dependent on MPK4 kinase activity and is required for full function of MYB75. MPK4 can be activated in response to light and is involved in the light-induced accumulation of anthocyanins. We show that MPK4 phosphorylation of MYB75 increases its stability and is essential for light-induced anthocyanin accumulation. Our findings reveal an important role for a MAPK pathway in light signal transduction.
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Affiliation(s)
- Shengnan Li
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenyi Wang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinlan Gao
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Kangquan Yin
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Rui Wang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Chengcheng Wang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Morten Petersen
- Department of Biology, University of Copenhagen, 2200 Copenhagen N, Denmark
| | - John Mundy
- Department of Biology, University of Copenhagen, 2200 Copenhagen N, Denmark
| | - Jin-Long Qiu
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
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