1
|
Qu L, Zhong M, Duan F, Li X, Yang J, Zhou Q, Tang D, He R, Liu X, Zhao X. The PHYB-FOF2-VOZ2 module functions to fine-tune flowering in response to changes in light quality by modulating FLC expression in Arabidopsis. PLANT COMMUNICATIONS 2024; 5:100922. [PMID: 38616490 PMCID: PMC11287145 DOI: 10.1016/j.xplc.2024.100922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 02/06/2024] [Accepted: 04/11/2024] [Indexed: 04/16/2024]
Abstract
Proper timing of flowering under different environmental conditions is critical for plant propagation. Light quality is a pivotal environmental cue that plays a critical role in flowering regulation. Plants tend to flower late under light with a high red (R)/far-red (FR) light ratio but early under light with a low R/FR light ratio. However, how plants fine-tune flowering in response to changes in light quality is not well understood. Here, we demonstrate that F-box of Flowering 2 (FOF2), an autonomous pathway-related regulator, physically interacts with VASCULAR PLANT ONE-ZINC FINGER 1 and 2 (VOZ1 and VOZ2), which are direct downstream factors of the R/FR light receptor phytochrome B (PHYB). We show that PHYB physically interacts with FOF2, mediates stabilization of the FOF2 protein under FR light and end-of-day FR light, and enhances FOF2 binding to VOZ2, which leads to degradation of VOZ2 by SCFFOF2 E3 ligase. By contrast, PHYB mediates degradation of FOF2 protein under R light and end-of-day R light. Genetic interaction studies demonstrated that FOF2 functions downstream of PHYB to promote FLC expression and inhibit flowering under both high R/FR light and simulated shade conditions, processes that are partially dependent on VOZ proteins. Taken together, our findings suggest a novel mechanism whereby plants fine-tune flowering time through a PHYB-FOF2-VOZ2 module that modulates FLC expression in response to changes in light quality.
Collapse
Affiliation(s)
- Lina Qu
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, 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, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Feifei Duan
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, 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, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, 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, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Quanyu Zhou
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Dongying Tang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China
| | - Reqing He
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China
| | - Xuanming Liu
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China.
| | - Xiaoying Zhao
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China.
| |
Collapse
|
2
|
Su Y, Ngea GLN, Wang K, Lu Y, Godana EA, Ackah M, Yang Q, Zhang H. Deciphering the mechanism of E3 ubiquitin ligases in plant responses to abiotic and biotic stresses and perspectives on PROTACs for crop resistance. PLANT BIOTECHNOLOGY JOURNAL 2024. [PMID: 38864414 DOI: 10.1111/pbi.14407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 05/12/2024] [Accepted: 05/27/2024] [Indexed: 06/13/2024]
Abstract
With global climate change, it is essential to find strategies to make crops more resistant to different stresses and guarantee food security worldwide. E3 ubiquitin ligases are critical regulatory elements that are gaining importance due to their role in selecting proteins for degradation in the ubiquitin-proteasome proteolysis pathway. The role of E3 Ub ligases has been demonstrated in numerous cellular processes in plants responding to biotic and abiotic stresses. E3 Ub ligases are considered a class of proteins that are difficult to control by conventional inhibitors, as they lack a standard active site with pocket, and their biological activity is mainly due to protein-protein interactions with transient conformational changes. Proteolysis-targeted chimeras (PROTACs) are a new class of heterobifunctional molecules that have emerged in recent years as relevant alternatives for incurable human diseases like cancer because they can target recalcitrant proteins for destruction. PROTACs interact with the ubiquitin-proteasome system, principally the E3 Ub ligase in the cell, and facilitate proteasome turnover of the proteins of interest. PROTAC strategies harness the essential functions of E3 Ub ligases for proteasomal degradation of proteins involved in dysfunction. This review examines critical advances in E3 Ub ligase research in plant responses to biotic and abiotic stresses. It highlights how PROTACs can be applied to target proteins involved in plant stress response to mitigate pathogenic agents and environmental adversities.
Collapse
Affiliation(s)
- Yingying Su
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Guillaume Legrand Ngolong Ngea
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Institute of Fisheries Sciences, University of Douala, Douala, Cameroon
| | - Kaili Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Yuchun Lu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Esa Abiso Godana
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Michael Ackah
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Qiya Yang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Hongyin Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| |
Collapse
|
3
|
Zhu Y, Wang Y, Ma Z, Wang D, Yan F, Liu Y, Li J, Yang X, Gao Z, Liu X, Wang L, Wang Q. Genome-Wide Identification of CHYR Gene Family in Sophora alopecuroides and Functional Analysis of SaCHYR4 in Response to Abiotic Stress. Int J Mol Sci 2024; 25:6173. [PMID: 38892361 PMCID: PMC11173228 DOI: 10.3390/ijms25116173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 05/31/2024] [Accepted: 06/01/2024] [Indexed: 06/21/2024] Open
Abstract
Sophora alopecuroides has important uses in medicine, wind breaking, and sand fixation. The CHY-zinc-finger and RING-finger (CHYR) proteins are crucial for plant growth, development, and environmental adaptation; however, genetic data regarding the CHYR family remain scarce. We aimed to investigate the CHYR gene family in S. alopecuroides and its response to abiotic stress, and identified 18 new SaCHYR genes from S. alopecuroides whole-genome data, categorized into 3 subclasses through a phylogenetic analysis. Gene structure, protein domains, and conserved motifs analyses revealed an exon-intron structure and conserved domain similarities. A chromosome localization analysis showed distribution across 12 chromosomes. A promoter analysis revealed abiotic stress-, light-, and hormone-responsive elements. An RNA-sequencing expression pattern analysis revealed positive responses of SaCHYR genes to salt, alkali, and drought stress. SaCHYR4 overexpression considerably enhanced alkali and drought tolerance in Arabidopsis thaliana. These findings shed light on SaCHYR's function and the resistance mechanisms of S. alopecuroides, presenting new genetic resources for crop resistance breeding.
Collapse
Affiliation(s)
- Youcheng Zhu
- College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China;
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Ying Wang
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Zhipeng Ma
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Di Wang
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Fan Yan
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Yajing Liu
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Jingwen Li
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Xuguang Yang
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Ziwei Gao
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Xu Liu
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Le Wang
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| | - Qingyu Wang
- College of Plant Science, Jilin University, Changchun 130062, China; (Y.W.); (Z.M.); (D.W.); (F.Y.); (Y.L.); (J.L.); (X.Y.); (Z.G.); (X.L.)
| |
Collapse
|
4
|
Gapper NE. NACs strike again: NOR-like1 is responsible for cuticle development in tomato fruit. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:1791-1795. [PMID: 38534188 DOI: 10.1093/jxb/erae049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
This article comments on:
Liu G-S, Huang H, Grierson D, Gao Y, Ji X, Peng Z-Z, Li H-L, Niu X-L, Jia W, He J-L, Xiang L-T, Gao H-Y, Qu G-Q, Zhu H-L, Zhu B-Z, Luo Y-B, Fu D-Q. 2024. NAC transcription factor SlNOR-like1 plays a dual regulatory role in tomato fruit cuticle formation. Journal of Experimental Botany 75, 1903–1918.
Collapse
Affiliation(s)
- Nigel E Gapper
- The New Zealand Institute for Plant and Food Research Limited, Mount Albert Research Centre, Auckland, New Zealand
| |
Collapse
|
5
|
Xu M, Zhang Z, Jiao Y, Tu Y, Zhang X. Genome-Wide Identification of Vascular Plant One-Zinc-Finger Gene Family in Six Cucurbitaceae Species and the Role of CmoVOZ2 in Salt and Drought Stress Tolerance. Genes (Basel) 2024; 15:307. [PMID: 38540365 PMCID: PMC10969924 DOI: 10.3390/genes15030307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 02/23/2024] [Accepted: 02/24/2024] [Indexed: 06/14/2024] Open
Abstract
As a plant-specific transcription factor, the vascular plant one-zinc-finger (VOZ) plays a crucial role in regulating various biological processes. In this study, a total of 17 VOZ genes in the Cucurbitaceae family were investigated using various bioinformatics methods. The 17 VOZ genes in Cucurbitaceae are distributed across 16 chromosomes. Based on the affinity of VOZ proteins to AtVOZ proteins, these 17 proteins were categorized into two groups: group I encompassed eight VOZ members, while group II comprised nine VOZ members. The expression profiles of CmoVOZs under various hormonal and abiotic stresses indicated that these genes were induced differentially by JA, ABA, GA, salt, and drought stress. Subsequently, CmoVOZ1 and CmoVOZ2 were found to be transcriptionally active, with the CmoVOZ2 protein being located mainly in the nucleus. Further experiments revealed that yeast cells expressing CmoVOZ2 gene showed increased tolerance to salt stress and drought stress. These results suggest that the VOZ gene family is not only important for plant growth and development but also that this mechanism may be universal across yeast and plants.
Collapse
Affiliation(s)
| | | | | | | | - Xin Zhang
- National Engineering Laboratory of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| |
Collapse
|
6
|
Han K, Zhao Y, Sun Y, Li Y. NACs, generalist in plant life. PLANT BIOTECHNOLOGY JOURNAL 2023; 21:2433-2457. [PMID: 37623750 PMCID: PMC10651149 DOI: 10.1111/pbi.14161] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/24/2023] [Accepted: 08/01/2023] [Indexed: 08/26/2023]
Abstract
Plant-specific NAC proteins constitute a major transcription factor family that is well-known for its roles in plant growth, development, and responses to abiotic and biotic stresses. In recent years, there has been significant progress in understanding the functions of NAC proteins. NAC proteins have a highly conserved DNA-binding domain; however, their functions are diverse. Previous understanding of the structure of NAC transcription factors can be used as the basis for their functional diversity. NAC transcription factors consist of a target-binding domain at the N-terminus and a highly versatile C-terminal domain that interacts with other proteins. A growing body of research on NAC transcription factors helps us comprehend the intricate signalling network and transcriptional reprogramming facilitated by NAC-mediated complexes. However, most studies of NAC proteins have been limited to a single function. Here, we discuss the upstream regulators, regulatory components and targets of NAC in the context of their prospective roles in plant improvement strategies via biotechnology intervention, highlighting the importance of the NAC transcription factor family in plants and the need for further research.
Collapse
Affiliation(s)
- Kunjin Han
- State Key Laboratory of Tree Genetics and Breeding, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Ye Zhao
- State Key Laboratory of Tree Genetics and Breeding, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Yuhan Sun
- State Key Laboratory of Tree Genetics and Breeding, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Yun Li
- State Key Laboratory of Tree Genetics and Breeding, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| |
Collapse
|
7
|
Lee Z, Kim S, Choi SJ, Joung E, Kwon M, Park HJ, Shim JS. Regulation of Flowering Time by Environmental Factors in Plants. PLANTS (BASEL, SWITZERLAND) 2023; 12:3680. [PMID: 37960036 PMCID: PMC10649094 DOI: 10.3390/plants12213680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/19/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023]
Abstract
The timing of floral transition is determined by both endogenous molecular pathways and external environmental conditions. Among these environmental conditions, photoperiod acts as a cue to regulate the timing of flowering in response to seasonal changes. Additionally, it has become clear that various environmental factors also control the timing of floral transition. Environmental factor acts as either a positive or negative signal to modulate the timing of flowering, thereby establishing the optimal flowering time to maximize the reproductive success of plants. This review aims to summarize the effects of environmental factors such as photoperiod, light intensity, temperature changes, vernalization, drought, and salinity on the regulation of flowering time in plants, as well as to further explain the molecular mechanisms that link environmental factors to the internal flowering time regulation pathway.
Collapse
Affiliation(s)
- Zion Lee
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea; (Z.L.); (S.K.); (S.J.C.); (E.J.)
| | - Sohyun Kim
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea; (Z.L.); (S.K.); (S.J.C.); (E.J.)
| | - Su Jeong Choi
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea; (Z.L.); (S.K.); (S.J.C.); (E.J.)
| | - Eui Joung
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea; (Z.L.); (S.K.); (S.J.C.); (E.J.)
| | - Moonhyuk Kwon
- Division of Life Science, ABC-RLRC, PMBBRC, Gyeongsang National University, Jinju 52828, Republic of Korea;
| | - Hee Jin Park
- Department of Biological Sciences and Research Center of Ecomimetics, College of Natural Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jae Sung Shim
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea; (Z.L.); (S.K.); (S.J.C.); (E.J.)
- Institute of Synthetic Biology for Carbon Neutralization, Chonnam National University, Gwangju 61186, Republic of Korea
| |
Collapse
|
8
|
Traver MS, Bartel B. The ubiquitin-protein ligase MIEL1 localizes to peroxisomes to promote seedling oleosin degradation and lipid droplet mobilization. Proc Natl Acad Sci U S A 2023; 120:e2304870120. [PMID: 37410814 PMCID: PMC10629534 DOI: 10.1073/pnas.2304870120] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 06/02/2023] [Indexed: 07/08/2023] Open
Abstract
Lipid droplets are organelles conserved across eukaryotes that store and release neutral lipids to regulate energy homeostasis. In oilseed plants, fats stored in seed lipid droplets provide fixed carbon for seedling growth before photosynthesis begins. As fatty acids released from lipid droplet triacylglycerol are catabolized in peroxisomes, lipid droplet coat proteins are ubiquitinated, extracted, and degraded. In Arabidopsis seeds, the predominant lipid droplet coat protein is OLEOSIN1 (OLE1). To identify genes modulating lipid droplet dynamics, we mutagenized a line expressing mNeonGreen-tagged OLE1 expressed from the OLE1 promoter and isolated mutants with delayed oleosin degradation. From this screen, we identified four miel1 mutant alleles. MIEL1 (MYB30-interacting E3 ligase 1) targets specific MYB transcription factors for degradation during hormone and pathogen responses [D. Marino et al., Nat. Commun. 4, 1476 (2013); H. G. Lee and P. J. Seo, Nat. Commun. 7, 12525 (2016)] but had not been implicated in lipid droplet dynamics. OLE1 transcript levels were unchanged in miel1 mutants, indicating that MIEL1 modulates oleosin levels posttranscriptionally. When overexpressed, fluorescently tagged MIEL1 reduced oleosin levels, causing very large lipid droplets. Unexpectedly, fluorescently tagged MIEL1 localized to peroxisomes. Our data suggest that MIEL1 ubiquitinates peroxisome-proximal seed oleosins, targeting them for degradation during seedling lipid mobilization. The human MIEL1 homolog (PIRH2; p53-induced protein with a RING-H2 domain) targets p53 and other proteins for degradation and promotes tumorigenesis [A. Daks et al., Cells 11, 1515 (2022)]. When expressed in Arabidopsis, human PIRH2 also localized to peroxisomes, hinting at a previously unexplored role for PIRH2 in lipid catabolism and peroxisome biology in mammals.
Collapse
Affiliation(s)
- Melissa S. Traver
- Department of Biosciences, Biochemistry and Cell Biology Program, Rice University, Houston, TX77005
| | - Bonnie Bartel
- Department of Biosciences, Biochemistry and Cell Biology Program, Rice University, Houston, TX77005
| |
Collapse
|
9
|
Zhao Y, Huang S, Wei L, Li M, Cai T, Ma X, Shuai P. ClNAC100 Is a NAC Transcription Factor of Chinese Fir in Response to Phosphate Starvation. Int J Mol Sci 2023; 24:10486. [PMID: 37445664 DOI: 10.3390/ijms241310486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 07/15/2023] Open
Abstract
Phosphate (Pi) deficiency is one of the most limiting factors for Chinese fir growth and production. Moreover, continuous cultivation of Chinese fir for multiple generations led to the reduction of soil nutrients, which hindered the yield of Chinese fir in southern China. Although NAC (NAM, ATAF, and CUC) transcription factors (TFs) play critical roles in plant development and abiotic stress resistance, it is still unclear how they regulate the response of Chinese fir to phosphate (Pi) starvation. Based on Pi-deficient transcriptome data of Chinses fir root, we identified a NAC transcription factor with increased expression under Pi deficiency, which was obtained by PCR and named ClNAC100. RT-qPCR confirmed that the expression of ClNAC100 in the root of Chinese fir was induced by phosphate deficiency and showed a dynamic change with time. It was positively regulated by ABA and negatively regulated by JA, and ClNAC100 was highly expressed in the roots and leaves of Chinese fir. Transcriptional activation assay confirmed that ClNAC100 was a transcriptional activator. The promoter of ClNAC100 was obtained by genome walking, which was predicted to contain a large number of stress, hormone, and growth-related cis-elements. Tobacco infection was used to verify the activity of the promoter, and the core promoter was located between -1519 bp and -589 bp. We identified 18 proteins bound to the ClNAC100 promoter and 5 ClNAC100 interacting proteins by yeast one-hybrid and yeast two-hybrid, respectively. We speculated that AHL and TIFY family transcription factors, calmodulin, and E3 ubiquitin ligase in these proteins might be important phosphorus-related proteins. These results provide a basis for the further study of the regulatory mechanism and pathways of ClNAC100 under Pi starvation.
Collapse
Affiliation(s)
- Yuxuan Zhao
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Chinese Fir Engineering Technology Research Center of the State Forestry and Grassland Administration, Fuzhou 350002, China
| | - Shuotian Huang
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Chinese Fir Engineering Technology Research Center of the State Forestry and Grassland Administration, Fuzhou 350002, China
| | - Lihui Wei
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Chinese Fir Engineering Technology Research Center of the State Forestry and Grassland Administration, Fuzhou 350002, China
| | - Meng Li
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Chinese Fir Engineering Technology Research Center of the State Forestry and Grassland Administration, Fuzhou 350002, China
| | - Tingting Cai
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Chinese Fir Engineering Technology Research Center of the State Forestry and Grassland Administration, Fuzhou 350002, China
| | - Xiangqing Ma
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Chinese Fir Engineering Technology Research Center of the State Forestry and Grassland Administration, Fuzhou 350002, China
| | - Peng Shuai
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Chinese Fir Engineering Technology Research Center of the State Forestry and Grassland Administration, Fuzhou 350002, China
| |
Collapse
|
10
|
Agyenim-Boateng KG, Zhang S, Gu R, Zhang S, Qi J, Azam M, Ma C, Li Y, Feng Y, Liu Y, Li J, Li B, Qiu L, Sun J. Identification of quantitative trait loci and candidate genes for seed folate content in soybean. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:149. [PMID: 37294438 DOI: 10.1007/s00122-023-04396-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 05/29/2023] [Indexed: 06/10/2023]
Abstract
KEY MESSAGE From 61 QTL mapped, a stable QTL cluster of 992 kb was discovered on chromosome 5 for folate content and a putative candidate gene, Glyma.05G237500, was identified. Folate (vitamin B9) is one of the most essential micronutrients whose deficiencies lead to various health defects in humans. Herein, we mapped the quantitative trait loci (QTL) underlying seed folate content in soybean using recombinant inbred lines developed from cultivars, ZH35 and ZH13, across four environments. We identified 61 QTL on 12 chromosomes through composite interval mapping, with phenotypic variance values ranging from 1.68 to 24.68%. A major-effect QTL cluster (qFo-05) was found on chromosome 5, spanning 992 kb and containing 134 genes. Through gene annotation and single-locus haplotyping analysis of qFo-05 in a natural soybean population, we identified seven candidate genes significantly associated with 5MTHF and total folate content in multiple environments. RNA-seq analysis showed a unique expression pattern of a hemerythrin RING zinc finger gene, Glyma.05G237500, between both parental cultivars during seed development, which suggest the gene might regulate folate content in soybean. This is the first study to investigate QTL underlying folate content in soybean and provides new insight for molecular breeding to improve folate content in soybean.
Collapse
Affiliation(s)
- Kwadwo Gyapong Agyenim-Boateng
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Shengrui Zhang
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Rongzhe Gu
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/ Key Laboratory of Germplasm and Biotechnology (MARA), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Shibi Zhang
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jie Qi
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Muhammad Azam
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Caiyou Ma
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yecheng Li
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yue Feng
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yitian Liu
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jing Li
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Bin Li
- MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Lijuan Qiu
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/ Key Laboratory of Germplasm and Biotechnology (MARA), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Junming Sun
- The National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| |
Collapse
|
11
|
Tola AJ, Missihoun TD. Iron Availability Influences Protein Carbonylation in Arabidopsis thaliana Plants. Int J Mol Sci 2023; 24:ijms24119732. [PMID: 37298684 DOI: 10.3390/ijms24119732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
Protein carbonylation is an irreversible form of post-translational modification triggered by reactive oxygen species in animal and plant cells. It occurs either through the metal-catalyzed oxidation of Lys, Arg, Pro, and Thr side chains or the addition of α, β-unsaturated aldehydes and ketones to the side chains of Cys, Lys, and His. Recent genetic studies concerning plants pointed to an implication of protein carbonylation in gene regulation through phytohormones. However, for protein carbonylation to stand out as a signal transduction mechanism, such as phosphorylation and ubiquitination, it must be controlled in time and space by a still unknown trigger. In this study, we tested the hypothesis that the profile and extent of protein carbonylation are influenced by iron homeostasis in vivo. For this, we compared the profile and the contents of the carbonylated proteins in the Arabidopsis thaliana wild-type and mutant-deficient in three ferritin genes under normal and stress conditions. Additionally, we examined the proteins specifically carbonylated in wild-type seedlings exposed to iron-deficient conditions. Our results indicated that proteins were differentially carbonylated between the wild type and the triple ferritin mutant Fer1-3-4 in the leaves, stems, and flowers under normal growth conditions. The profile of the carbonylated proteins was also different between the wild type and the ferritin triple mutant exposed to heat stress, thus pointing to the influence of iron on the carbonylation of proteins. Consistent with this, the exposure of the seedlings to iron deficiency and iron excess greatly influenced the carbonylation of certain proteins involved in intracellular signal transduction, translation, and iron deficiency response. Overall, the study underlined the importance of iron homeostasis in the occurrence of protein carbonylation in vivo.
Collapse
Affiliation(s)
- Adesola J Tola
- Groupe de Recherche en Biologie Végétale (GRBV), Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boul. des Forges, Trois-Rivières, QC G9A 5H7, Canada
| | - Tagnon D Missihoun
- Groupe de Recherche en Biologie Végétale (GRBV), Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boul. des Forges, Trois-Rivières, QC G9A 5H7, Canada
| |
Collapse
|
12
|
Yang L, Wu X, Liu S, Zhang L, Li T, Cao Y, Duan Q. Comprehensive Analysis of BrHMPs Reveals Potential Roles in Abiotic Stress Tolerance and Pollen–Stigma Interaction in Brassica rapa. Cells 2023; 12:cells12071096. [PMID: 37048168 PMCID: PMC10093364 DOI: 10.3390/cells12071096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/28/2023] [Accepted: 03/29/2023] [Indexed: 04/08/2023] Open
Abstract
Heavy metal-associated proteins (HMPs) participate in heavy metal detoxification. Although HMPs have been identified in several plants, no studies to date have identified the HMPs in Brassica rapa (B. rapa). Here, we identified 85 potential HMPs in B. rapa by bioinformatic methods. The promoters of the identified genes contain many elements associated with stress responses, including response to abscisic acid, low-temperature, and methyl jasmonate. The expression levels of BrHMP14, BrHMP16, BrHMP32, BrHMP41, and BrHMP42 were upregulated under Cu2+, Cd2+, Zn2+, and Pb2+ stresses. BrHMP06, BrHMP30, and BrHMP41 were also significantly upregulated after drought treatment. The transcripts of BrHMP06 and BrHMP11 increased mostly under cold stress. After applying salt stress, the expression of BrHMP02, BrHMP16, and BrHMP78 was induced. We observed increased BrHMP36 expression during the self-incompatibility (SI) response and decreased expression in the compatible pollination (CP) response during pollen–stigma interactions. These changes in expression suggest functions for these genes in HMPs include participating in heavy metal transport, detoxification, and response to abiotic stresses, with the potential for functions in sexual reproduction. We found potential co-functional partners of these key players by protein–protein interaction (PPI) analysis and found that some of the predicted protein partners are known to be involved in corresponding stress responses. Finally, phosphorylation investigation revealed many phosphorylation sites in BrHMPs, suggesting post-translational modification may occur during the BrHMP-mediated stress response. This comprehensive analysis provides important clues for the study of the molecular mechanisms of BrHMP genes in B. rapa, especially for abiotic stress and pollen–stigma interactions.
Collapse
Affiliation(s)
- Lin Yang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
| | - Xiaoyu Wu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
| | - Shangjia Liu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
| | - Lina Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
| | - Ting Li
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
| | - Yunyun Cao
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
| | - Qiaohong Duan
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
| |
Collapse
|
13
|
Arias LA, D'Ippolito S, Frik J, Amigo NL, Marchetti F, Casalongué CA, Pagnussat GC, Fiol DF. The DC1 Domain Protein BINUCLEATE POLLEN is Required for POLLEN Development in Arabidopsis thaliana. PLANT & CELL PHYSIOLOGY 2023; 63:1994-2007. [PMID: 36001044 DOI: 10.1093/pcp/pcac122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
The development of the male gametophyte is a tightly regulated process that requires the precise control of cell division and gene expression. A relevant aspect to understand the events underlying pollen development regulation constitutes the identification and characterization of the genes required for this process. In this work, we showed that the DC1 domain protein BINUCLEATE POLLEN (BNP) is essential for pollen development and germination. Pollen grains carrying a defective BNP alleles failed to complete mitosis II and exhibited impaired pollen germination. By yeast two-hybrid analysis and bimolecular fluorescence complementation assays, we identified a set of BNP-interacting proteins. Among confirmed interactors, we found the NAC family transcriptional regulators Vascular Plant One-Zinc Finger 1 (VOZ1) and VOZ2. VOZ1 localization changes during pollen development, moving to the vegetative nucleus at the tricellular stage. We observed that this relocalization requires BNP; in the absence of BNP in pollen from bnp/BNP plants, VOZ1 nuclear localization is impaired. As the voz1voz2 double mutants showed the same developmental defect observed in bnp pollen grains, we propose that BNP requirement to complete microgametogenesis could be linked to its interaction with VOZ1/2 proteins. BNP could have the role of a scaffold protein, recruiting VOZ1/2 to the endosomal system into assemblies that are required for their further translocation to the nucleus, where they act as transcriptional regulators.
Collapse
Affiliation(s)
- Leonardo A Arias
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Sebastián D'Ippolito
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Jésica Frik
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Natalia L Amigo
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Fernanda Marchetti
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Claudia A Casalongué
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Gabriela C Pagnussat
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Diego F Fiol
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| |
Collapse
|
14
|
Shi P, Jiang R, Li B, Wang D, Fang D, Yin M, Yin M, Gu M. Genome-Wide Analysis and Expression Profiles of the VOZ Gene Family in Quinoa ( Chenopodium quinoa). Genes (Basel) 2022; 13:1695. [PMID: 36292580 PMCID: PMC9601790 DOI: 10.3390/genes13101695] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 09/19/2022] [Accepted: 09/19/2022] [Indexed: 11/26/2023] Open
Abstract
Vascular plant one zinc-finger (VOZ) proteins are a plant-specific transcription factor family and play important roles in plant development and stress responses. However, little is known about the VOZ genes in quinoa. In the present study, a genome-wide investigation of the VOZ gene family in quinoa was performed, including gene structures, conserved motifs, phylogeny, and expression profiles. A total of four quinoa VOZ genes distributed on three chromosomes were identified. Based on phylogenetic analysis, CqVOZ1 and CqVOZ3 belong to subfamily II, and CqVOZ2 and CqVOZ4 belong to subfamily III. Furthermore, the VOZ transcription factors of quinoa and sugarbeet were more closely related than other species. Except for CqVOZ3, all the other three CqVOZs have four exons and four introns. Analysis of conserved motifs indicated that each CqVOZ member contained seven common motifs. Multiple sequence alignment showed that the CqVOZ genes were highly conserved with consensus sequences, which might be plausibly significant for the preservation of structural integrity of the family proteins. Tissue expression analysis revealed that four CqVOZ genes were highly expressed in inflorescence and relatively low in leaves and stems, suggesting that these genes had obvious tissue expression specificity. The expression profiles of the quinoa CqVOZs under various abiotic stresses demonstrated that these genes were differentially induced by cold stress, salt stress, and drought stress. The transcript level of CqVOZ1 and CqVOZ4 were down-regulated by salt stress and drought stress, while CqVOZ2 and CqVOZ3 were up-regulated by cold, salt, and drought stress, which could be used as abiotic stress resistance candidate genes. This study systematically identifies the CqVOZ genes at the genome-wide level, contributing to a better understanding of the quinoa VOZ transcription factor family and laying a foundation for further exploring the molecular mechanism of development and stress resistance of quinoa.
Collapse
Affiliation(s)
- Pibiao Shi
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Academy of Agricultural Sciences, Yancheng 224049, China
| | - Runzhi Jiang
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Academy of Agricultural Sciences, Yancheng 224049, China
| | - Bin Li
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Academy of Agricultural Sciences, Yancheng 224049, China
| | - Deling Wang
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Academy of Agricultural Sciences, Yancheng 224049, China
| | - Di Fang
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Academy of Agricultural Sciences, Yancheng 224049, China
| | - Min Yin
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Academy of Agricultural Sciences, Yancheng 224049, China
| | - Mingming Yin
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Academy of Agricultural Sciences, Yancheng 224049, China
| | - Minfeng Gu
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Academy of Agricultural Sciences, Yancheng 224049, China
| |
Collapse
|
15
|
Liang G. Iron uptake, signaling, and sensing in plants. PLANT COMMUNICATIONS 2022; 3:100349. [PMID: 35706354 PMCID: PMC9483112 DOI: 10.1016/j.xplc.2022.100349] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/19/2022] [Accepted: 06/09/2022] [Indexed: 05/10/2023]
Abstract
Iron (Fe) is an essential micronutrient that affects the growth and development of plants because it participates as a cofactor in numerous physiological and biochemical reactions. As a transition metal, Fe is redox active. Fe often exists in soil in the form of insoluble ferric hydroxides that are not bioavailable to plants. Plants have developed sophisticated mechanisms to ensure an adequate supply of Fe in a fluctuating environment. Plants can sense Fe status and modulate the transcription of Fe uptake-associated genes, finally controlling Fe uptake from soil to root. There is a critical need to understand the molecular mechanisms by which plants maintain Fe homeostasis in response to Fe fluctuations. This review focuses on recent advances in elucidating the functions of Fe signaling components. Taking Arabidopsis thaliana and Oryza sativa as examples, this review begins by discussing the Fe acquisition systems that control Fe uptake from soil, the major components that regulate Fe uptake systems, and the perception of Fe status. Future explorations of Fe signal transduction will pave the way for understanding the regulatory mechanisms that underlie the maintenance of plant Fe homeostasis.
Collapse
Affiliation(s)
- Gang Liang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Kunming, Yunnan 650223, China.
| |
Collapse
|
16
|
Lichtblau DM, Schwarz B, Baby D, Endres C, Sieberg C, Bauer P. The Iron Deficiency-Regulated Small Protein Effector FEP3/IRON MAN1 Modulates Interaction of BRUTUS-LIKE1 With bHLH Subgroup IVc and POPEYE Transcription Factors. FRONTIERS IN PLANT SCIENCE 2022; 13:930049. [PMID: 35755670 PMCID: PMC9226616 DOI: 10.3389/fpls.2022.930049] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 05/19/2022] [Indexed: 05/28/2023]
Abstract
In light of climate change and human population growth one of the most challenging tasks is to generate plants that are Fe-efficient, resilient to low Fe supply and Fe-biofortified. For such endeavors, it is crucial to understand the regulation of Fe acquisition and allocation in plants. One open question is how identified Fe-regulatory proteins comprising positive and negative regulators act together to steer Fe homeostasis. bHLH transcription factors (TFs) belonging to the subgroups IVb and IVc can initiate a bHLH cascade controlling the -Fe response in roots. In Arabidopsis thaliana, the -Fe-induced genes are sub-divided into several gene co-expression clusters controlled by different sets of TFs. Some of the co-expressed genes encode regulatory E3 ligase proteins BRUTUS (BTS)/BTS-LIKE (BTSL) and small proteins belonging to the group of FE UPTAKE-INDUCING PEPTIDE/IRON MAN (FEP/IMA). Recently, it was described that FEP1/IMA3 and FEP3/IMA1 proteins inhibit the repression of bHLH factors by BTS. We had postulated that -Fe-regulated co-expression clusters provide new information about regulatory protein interaction complexes. Here, we report a targeted yeast two-hybrid screen among 23 proteins of the -Fe response. This identified a novel protein interactome involving another E3 ligase, namely BTSL1, basic helix-loop-helix (bHLH) protein POPEYE (PYE) and transcription factors of the subgroup IVc as well as FEP3/IMA1. Because of the difficulty in stable BTSL1 protein expression in plant cells, we used a yeast two hybrid-based deletion mapping, homology modeling and molecular docking, to pinpoint interaction sites in BTSL1 and FEP3/IMA1. bHLH IVc TFs have similar residues at their C-terminus as FEP3/IMA1 interacting sites. FEP3/IMA1 attenuated interaction of BTSL1 and bHLH proteins in a yeast three-hybrid assay, in line with physiological data pointing to enhanced Fe acquisition and allocation in FEP3/IMA1 overexpression and btsl1 btsl2 mutant plants. Hence, exploiting -Fe-induced gene co-expression networks identified FEP3/IMA1 as a small effector protein that binds and inhibits the BTSL1 complex with PYE and bHLH subgroup IVc proteins. Structural analysis resolved interaction sites. This information helps improving models of Fe regulation and identifying novel targets for breeding of Fe-efficient crops.
Collapse
Affiliation(s)
| | - Birte Schwarz
- Institute of Botany, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Dibin Baby
- Institute of Botany, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Christopher Endres
- Institute of Botany, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Christin Sieberg
- Institute of Botany, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Petra Bauer
- Institute of Botany, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
- Cluster of Excellence on Plant Sciences, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| |
Collapse
|
17
|
Kobayashi T, Shinkawa H, Nagano AJ, Nishizawa NK. The basic leucine zipper transcription factor OsbZIP83 and the glutaredoxins OsGRX6 and OsGRX9 facilitate rice iron utilization under the control of OsHRZ ubiquitin ligases. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 110:1731-1750. [PMID: 35411594 DOI: 10.1111/tpj.15767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 04/06/2022] [Indexed: 05/16/2023]
Abstract
Under low iron availability, plants induce the expression of various genes for iron uptake and translocation. The rice (Oryza sativa) ubiquitin ligases OsHRZ1 and OsHRZ2 cause overall repression of these iron-related genes at the transcript level, but their protein-level regulation is unclear. We conducted a proteome analysis to identify key regulators whose abundance was regulated by OsHRZs at the protein level. In response to iron deficiency or OsHRZ knockdown, many genes showed differential regulation between the transcript and protein levels, including the TGA-type basic leucine zipper transcription factor OsbZIP83. We also identified two glutaredoxins, OsGRX6 and OsGRX9, as OsHRZ-interacting proteins in yeast and plant cells. OsGRX6 also interacted with OsbZIP83. Our in vitro degradation assay suggested that OsbZIP83, OsGRX6 and OsGRX9 proteins are subjected to 26S proteasome- and OsHRZ-dependent degradation. Proteome analysis and our in vitro degradation assay also suggested that OsbZIP83 protein was preferentially degraded under iron-deficient conditions in rice roots. Transgenic rice lines overexpressing OsGRX9 and OsbZIP83 showed improved tolerance to iron deficiency. Expression of iron-related genes was affected in the OsGRX9 and OsGRX6 knockdown lines, suggesting disturbed iron utilization and signaling. OsbZIP83 overexpression lines showed enhanced expression of OsYSL2 and OsNAS3, which are involved in internal iron translocation, in addition to OsGRX9 and genes related to phytoalexin biosynthesis and the salicylic acid pathway. The results suggest that OsbZIP83, OsGRX6 and OsGRX9 facilitate iron utilization downstream of the OsHRZ pathway.
Collapse
Affiliation(s)
- Takanori Kobayashi
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Haruka Shinkawa
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Atsushi J Nagano
- Faculty of Agriculture, Ryukoku University, Otsu, Shiga, 520-2194, Japan
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, 997-0017, Japan
| | - Naoko K Nishizawa
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| |
Collapse
|
18
|
Chong L, Xu R, Huang P, Guo P, Zhu M, Du H, Sun X, Ku L, Zhu JK, Zhu Y. The tomato OST1-VOZ1 module regulates drought-mediated flowering. THE PLANT CELL 2022; 34:2001-2018. [PMID: 35099557 PMCID: PMC9048945 DOI: 10.1093/plcell/koac026] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 01/25/2022] [Indexed: 05/08/2023]
Abstract
Flowering is a critical agricultural trait that substantially affects tomato fruit yield. Although drought stress influences flowering time, the molecular mechanism underlying drought-regulated flowering in tomato remains elusive. In this study, we demonstrated that loss of function of tomato OPEN STOMATA 1 (SlOST1), a protein kinase essential for abscisic acid (ABA) signaling and abiotic stress responses, lowers the tolerance of tomato plants to drought stress. slost1 mutants also exhibited a late flowering phenotype under both normal and drought stress conditions. We also established that SlOST1 directly interacts with and phosphorylates the NAC (NAM, ATAF and CUC)-type transcription factor VASCULAR PLANT ONE-ZINC FINGER 1 (SlVOZ1), at residue serine 67, thereby enhancing its stability and nuclear translocation in an ABA-dependent manner. Moreover, we uncovered several SlVOZ1 binding motifs from DNA affinity purification sequencing analyses and revealed that SlVOZ1 can directly bind to the promoter of the major flowering-integrator gene SINGLE FLOWER TRUSS to promote tomato flowering transition in response to drought. Collectively, our data uncover the essential role of the SlOST1-SlVOZ1 module in regulating flowering in response to drought stress in tomato and offer insights into a novel strategy to balance drought stress response and flowering.
Collapse
Affiliation(s)
| | | | | | - Pengcheng Guo
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475001, China
- Sanya Institute of Henan University, Sanya, 572025, China
| | - Mingku Zhu
- Institute of Integrative Plant Biology, School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China
| | - Hai Du
- College of Agronomy and Biotechnology, Chongqing Engineering Research Center for Rapeseed, Southwest University, Chongqing 400716, China
| | - Xiaoli Sun
- Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Lixia Ku
- College of Agronomy, Synergetic Innovation Center of Henan Grain Crops and National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450046, China
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana 47907, USA
| | | |
Collapse
|
19
|
Liu H, Yang W, Zhao X, Kang G, Li N, Xu H. Genome-wide analysis and functional characterization of CHYR gene family associated with abiotic stress tolerance in bread wheat (Triticum aestivum L.). BMC PLANT BIOLOGY 2022; 22:204. [PMID: 35443615 PMCID: PMC9019960 DOI: 10.1186/s12870-022-03589-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/11/2022] [Indexed: 05/26/2023]
Abstract
BACKGROUND CHY zinc-finger and RING finger (CHYR) proteins have been functionally characterized in plant growth, development and various stress responses. However, the genome-wide analysis was not performed in wheat. RESULTS In this study, a total of 18 TaCHYR genes were identified in wheat and classified into three groups. All TaCHYR genes contained CHY-zinc finger, C3H2C3-type RING finger and zinc ribbon domains, and group III members included 1-3 hemerythrin domains in the N-terminus regions. TaCHYR genes in each group shared similar conserved domains distribution. Chromosomal location, synteny and cis-elements analysis of TaCHYRs were also analyzed. Real-time PCR results indicated that most of selected 9 TaCHYR genes exhibited higher expression levels in leaves during wheat seedling stage. All these TaCHYR genes were up-regulated after PEG treatment, and these TaCHYRs exhibited differential expression patterns in response to salt, cold and heat stress in seedling leaves. The growth of yeast cells expressing TaCHYR2.1, TaCHYR9.2 and TaCHYR11.1 were inhibited under salt and dehydration stress. Moreover, gene ontology (GO) annotation, protein interaction and miRNA regulatory network of TaCHYR genes were analyzed. CONCLUSIONS These results increase our understanding of CHYR genes and provide robust candidate genes for further functional investigations aimed at crop improvement.
Collapse
Affiliation(s)
- Hao Liu
- College of Agriculture, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China
| | - Wenbo Yang
- Cereal Crops Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou, 450046, Henan, People's Republic of China
| | - Xingli Zhao
- College of Agriculture, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China
| | - Guozhang Kang
- National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, 450046, Henan, People's Republic of China
| | - Na Li
- College of Agriculture, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Huawei Xu
- College of Agriculture, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| |
Collapse
|
20
|
Abstract
Nutrients are scarce and valuable resources, so plants developed sophisticated mechanisms to optimize nutrient use efficiency. A crucial part of this is monitoring external and internal nutrient levels to adjust processes such as uptake, redistribution, and cellular compartmentation. Measurement of nutrient levels is carried out by primary sensors that typically involve either transceptors or transcription factors. Primary sensors are only now starting to be identified in plants for some nutrients. In particular, for nitrate, there is detailed insight concerning how the external nitrate status is sensed by members of the nitrate transporter 1 (NRT1) family. Potential sensors for other macronutrients such as potassium and sodium have also been identified recently, whereas for micronutrients such as zinc and iron, transcription factor type sensors have been reported. This review provides an overview that interprets and evaluates our current understanding of how plants sense macro and micronutrients in the rhizosphere and root symplast.
Collapse
|
21
|
Lešková A, Javot H, Giehl RFH. Metal crossroads in plants: modulation of nutrient acquisition and root development by essential trace metals. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1751-1765. [PMID: 34791130 DOI: 10.1093/jxb/erab483] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 11/01/2021] [Indexed: 06/13/2023]
Abstract
The metals iron, zinc, manganese, copper, molybdenum, and nickel are essential for the growth and development of virtually all plant species. Although these elements are required at relatively low amounts, natural factors and anthropogenic activities can significantly affect their availability in soils, inducing deficiencies or toxicities in plants. Because essential trace metals can shape root systems and interfere with the uptake and signaling mechanisms of other nutrients, the non-optimal availability of any of them can induce multi-element changes in plants. Interference by one essential trace metal with the acquisition of another metal or a non-metal nutrient can occur prior to or during root uptake. Essential trace metals can also indirectly impact the plant's ability to capture soil nutrients by targeting distinct root developmental programs and hormone-related processes, consequently inducing largely metal-specific changes in root systems. The presence of metal binding domains in many regulatory proteins also enables essential trace metals to coordinate nutrient uptake by acting at high levels in hierarchical signaling cascades. Here, we summarize the known molecular and cellular mechanisms underlying trace metal-dependent modulation of nutrient acquisition and root development, and highlight the importance of considering multi-element interactions to breed crops better adapted to non-optimal trace metal availabilities.
Collapse
Affiliation(s)
- Alexandra Lešková
- Aix Marseille Univ, CEA, CNRS, Bioscience and Biotechnology Institut of Aix-Marseille (BIAM), SAVE, Saint Paul-Lez-Durance, F-13108, France
| | - Hélène Javot
- Aix Marseille Univ, CEA, CNRS, Bioscience and Biotechnology Institut of Aix-Marseille (BIAM), SAVE, Saint Paul-Lez-Durance, F-13108, France
| | - Ricardo F H Giehl
- Department of Physiology & Cell Biology, Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, 06466 Seeland, Germany
| |
Collapse
|
22
|
Nussaume L, Desnos T. "Je t'aime moi non plus": A love-hate relationship between iron and phosphate. MOLECULAR PLANT 2022; 15:1-2. [PMID: 34813949 DOI: 10.1016/j.molp.2021.11.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Affiliation(s)
- Laurent Nussaume
- Aix Marseille Univ, CEA, CNRS, BIAM, UMR7265, SAVE (Signalisation pour l'Adaptation des Végétaux à leur Environnement), Saint-Paul lez Durance, France.
| | - Thierry Desnos
- Aix Marseille Univ, CEA, CNRS, BIAM, UMR7265, SAVE (Signalisation pour l'Adaptation des Végétaux à leur Environnement), Saint-Paul lez Durance, France.
| |
Collapse
|
23
|
Sun H, Li J, Li X, Lv Q, Chen L, Wang B, Li L. RING E3 ubiquitin ligase TaSADR1 negatively regulates drought resistance in transgenic Arabidopsis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 170:255-265. [PMID: 34922142 DOI: 10.1016/j.plaphy.2021.12.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/23/2021] [Accepted: 12/03/2021] [Indexed: 06/14/2023]
Abstract
Drought stress is an important factor that affects crop yields and quality. E3 ubiquitin ligase has crucial roles in the responses to abiotic stresses. However, few studies have investigated the role of E3 ubiquitin ligase during drought stress in wheat. In this study, we cloned and identified the orthologous gene of Oryza sativa Salt-, ABA- and Drought-Induced RING Finger Protein 1 (OsSADR1) in wheat (Triticum aestivum L.) called TaSADR1. TaSADR1 encodes a protein containing 486 amino acids with a C3HC4 type RING finger conserved domain at the N-terminal. We confirmed that TaSADR1 has an E3 ubiquitin ligase activity and it is located in the nucleus. High expression of TaSADR1 was induced by treatment with PEG6000 and abscisic acid (ABA). TaSADR1-overexpressing transgenic Arabidopsis plants exhibited decreased drought tolerance. Under drought stress, compared with the wild-type (WT) lines, TaSADR1-overexpressing transgenic Arabidopsis lines had lower proline and chlorophyll contents, and antioxidant enzyme activities (superoxide dismutase, peroxidase, and catalase), whereas the water loss rate, malondialdehyde content, and relative electrolyte leakage were higher. In addition, the overexpressing transgenic Arabidopsis lines were more sensitive to mannitol and ABA treatment at seed germination and during seedling growth. The expression levels of genes related to stress were downregulated under drought conditions in the transgenic plants. Our results demonstrate that TaSADR1 may negatively regulate drought stress responses by regulating the expression of stress-related genes.
Collapse
Affiliation(s)
- Huimin Sun
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Jiatao Li
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Xu Li
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Qian Lv
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Liuping Chen
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Bingxin Wang
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Liqun Li
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| |
Collapse
|
24
|
Yang W, Wu K, Wang B, Liu H, Guo S, Guo X, Luo W, Sun S, Ouyang Y, Fu X, Chong K, Zhang Q, Xu Y. The RING E3 ligase CLG1 targets GS3 for degradation via the endosome pathway to determine grain size in rice. MOLECULAR PLANT 2021; 14:1699-1713. [PMID: 34216830 DOI: 10.1016/j.molp.2021.06.027] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 06/26/2021] [Accepted: 06/27/2021] [Indexed: 05/02/2023]
Abstract
G-protein signaling and ubiquitin-dependent degradation are both involved in grain development in rice, but how these pathways are coordinated in regulating this process is unknown. Here, we show that Chang Li Geng 1 (CLG1), which encodes an E3 ligase, regulates grain size by targeting the Gγ protein GS3, a negative regulator of grain length, for degradation. Overexpression of CLG1 led to increased grain length, while overexpression of mutated CLG1 with changes in three conserved amino acids decreased grain length. We found that CLG1 physically interacts with and ubiquitinats GS3which is subsequently degraded through the endosome degradation pathway, leading to increased grain size. Furthermore, we identified a critical SNP in the exon 3 of CLG1 that is significantly associated with grain size variation in a core collection of cultivated rice. This SNP results in an amino acid substitution from Arg to Ser at position 163 of CLG1 that enhances the E3 ligase activity of CLG1 and thus increases rice grain size. Both the expression level of CLG1 and the SNP CLG1163S may be useful variations for manipulating grain size in rice.
Collapse
Affiliation(s)
- Wensi Yang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kun Wu
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Bo Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huanhuan Liu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Siyi Guo
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoyu Guo
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Luo
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Shengyuan Sun
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Yidan Ouyang
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiangdong Fu
- The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Kang Chong
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China; Innovation Academy for Seed Design, CAS, Beijing 100101, China
| | - Qifa Zhang
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China.
| | - Yunyuan Xu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; Innovation Academy for Seed Design, CAS, Beijing 100101, China.
| |
Collapse
|
25
|
Beathard C, Mooney S, Al-Saharin R, Goyer A, Hellmann H. Characterization of Arabidopsis thaliana R2R3 S23 MYB Transcription Factors as Novel Targets of the Ubiquitin Proteasome-Pathway and Regulators of Salt Stress and Abscisic Acid Response. FRONTIERS IN PLANT SCIENCE 2021; 12:629208. [PMID: 34489986 PMCID: PMC8417012 DOI: 10.3389/fpls.2021.629208] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 07/30/2021] [Indexed: 05/27/2023]
Abstract
Rapid response to environmental changes and abiotic stress to coordinate developmental programs is critical for plants. To accomplish this, plants use the ubiquitin proteasome pathway as a flexible and efficient mechanism to control protein stability and to direct cellular reactions. Here, we show that all three members of the R2R3 S23 MYB transcription factor subfamily, MYB1, MYB25, and MYB109, are degraded by the 26S proteasome, likely facilitated by a CUL3-based E3 ligase that uses MATH-BTB/POZ proteins as substrate adaptors. A detailed description of MYB1, MYB25, and MYB109 expression shows their nuclear localization and specific tissue specific expression patterns. It further demonstrates that elevated expression of MYB25 reduces sensitivities toward abscisic acid, osmotic and salt stress in Arabidopsis, while downregulation of all S23 members results in hypersensitivities. Transcriptional profiling in root and shoot of seedlings overexpressing MYB25 shows that the transcription factor widely affects cellular stress pathways related to biotic and abiotic stress control. Overall, the work extends our knowledge on proteins targeted by CUL3-based E3 ligases that use MATH-BTB/POZ proteins as substrate adaptors and provides first information on all members of the MYB S23 subfamily.
Collapse
Affiliation(s)
- Chase Beathard
- School of Biological Sciences, Washington State University, Pullman, WA, United States
| | - Sutton Mooney
- School of Biological Sciences, Washington State University, Pullman, WA, United States
| | - Raed Al-Saharin
- School of Biological Sciences, Washington State University, Pullman, WA, United States
- Department of Applied Biology, Tafila Technical University, At-Tafilah, Jordan
| | - Aymeric Goyer
- Department of Botany and Plant Pathology, Hermiston Agricultural Research and Extension Center, Oregon State University, Hermiston, OR, United States
| | - Hanjo Hellmann
- School of Biological Sciences, Washington State University, Pullman, WA, United States
| |
Collapse
|
26
|
Rehman SU, Qanmber G, Tahir MHN, Irshad A, Fiaz S, Ahmad F, Ali Z, Sajjad M, Shees M, Usman M, Geng Z. Characterization of Vascular plant One-Zinc finger (VOZ) in soybean (Glycine max and Glycine soja) and their expression analyses under drought condition. PLoS One 2021; 16:e0253836. [PMID: 34214130 PMCID: PMC8253436 DOI: 10.1371/journal.pone.0253836] [Citation(s) in RCA: 7] [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: 02/25/2021] [Accepted: 06/15/2021] [Indexed: 11/18/2022] Open
Abstract
Vascular plant one-zinc-finger (VOZ) transcription factors regulate plant growth and development under drought conditions. Six VOZ transcription factors encoding genes exist in soybean genome (both in Glycine max and Glycine soja). Herein, GmVOZs and GsVOZs were identified through in silico analysis and characterized with different bioinformatics tools and expression analysis. Phylogenetic analysis classified VOZ genes in four groups. Sequence logos analysis among G. max and G. soja amino acid residues revealed higher conservation. Presence of stress related cis-elements in the upstream regions of GmVOZs and GsVOZs highlights their role in tolerance against abiotic stresses. The collinearity analysis identified 14 paralogous/orthologous gene pairs within and between G. max and G. soja. The Ka/Ks values showed that soybean VOZ genes underwent selection pressure with limited functional deviation arising from whole genome and segmental duplication. The GmVOZs and GsVOZs were found to express in roots and leaves at seedling stage. The qRT-PCR revealed that GmVOZs and GsVOZs transcripts can be regulated by abiotic stresses such as polyethylene glycol (PEG). The findings of this study will provide a reference to decipher physiological and molecular functions of VOZ genes in soybean.
Collapse
Affiliation(s)
- Shoaib Ur Rehman
- Institute of Plant Breeding and Biotechnology, Muhammad Nawaz Shareef University of Agriculture Multan, Multan, Pakistan
| | - Ghulam Qanmber
- State Key Laboratory of Cotton Biology, Cotton Research Institute of Chinese Academy of Agricultural Sciences, Anyang, Henan, China
| | - Muhammad Hammad Nadeem Tahir
- Institute of Plant Breeding and Biotechnology, Muhammad Nawaz Shareef University of Agriculture Multan, Multan, Pakistan
| | - Ahsan Irshad
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Engineering Laboratory of Crop Molecular Breeding, National Center of Space Mutagenesis for Crop Improvement, Beijing, China
| | - Sajid Fiaz
- Department of Plant Breeding and Genetics, The University of Haripur, Haripur, Pakistan
| | - Furqan Ahmad
- Institute of Plant Breeding and Biotechnology, Muhammad Nawaz Shareef University of Agriculture Multan, Multan, Pakistan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Zulfiqar Ali
- Institute of Plant Breeding and Biotechnology, Muhammad Nawaz Shareef University of Agriculture Multan, Multan, Pakistan
| | - Muhammad Sajjad
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad, Pakistan
| | - Muhammad Shees
- Institute of Plant Breeding and Biotechnology, Muhammad Nawaz Shareef University of Agriculture Multan, Multan, Pakistan
| | - Muhammad Usman
- Institute of Plant Breeding and Biotechnology, Muhammad Nawaz Shareef University of Agriculture Multan, Multan, Pakistan
| | - Zhide Geng
- Institute of Food Crops, Yunnan Academy of Agricultural Sciences, Kunming, China
| |
Collapse
|
27
|
Wang J, Wang R, Fang H, Zhang C, Zhang F, Hao Z, You X, Shi X, Park CH, Hua K, He F, Bellizzi M, Xuan Vo KT, Jeon JS, Ning Y, Wang GL. Two VOZ transcription factors link an E3 ligase and an NLR immune receptor to modulate immunity in rice. MOLECULAR PLANT 2021; 14:253-266. [PMID: 33186754 DOI: 10.1016/j.molp.2020.11.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 10/03/2020] [Accepted: 11/08/2020] [Indexed: 05/11/2023]
Abstract
Nucleotide-binding leucine-rich repeat (NLR) proteins play critical roles in plant immunity. However, how NLRs are regulated and activate defense signaling is not fully understood. The rice (Oryza sativa) NLR receptor Piz-t confers broad-spectrum resistance to the fungal pathogen Magnaporthe oryzae and the RING-type E3 ligase AVRPIZ-T INTERACTING PROTEIN 10 (APIP10) negatively regulates Piz-t accumulation. In this study, we found that APIP10 interacts with two rice transcription factors, VASCULAR PLANT ONE-ZINC FINGER 1 (OsVOZ1) and OsVOZ2, and promotes their degradation through the 26S proteasome pathway. OsVOZ1 displays transcriptional repression activity while OsVOZ2 confers transcriptional activation activity in planta. The osvoz1 and osvoz2 single mutants display modest but opposite M. oryzae resistance in the non-Piz-t background. However, the osvoz1 osvoz2 double mutant exhibits strong dwarfism and cell death, and silencing of both genes via RNA interference also leads to dwarfism, mild cell death, and enhanced resistance to M. oryzae in the non-Piz-t background. Both OsVOZ1 and OsVOZ2 interact with Piz-t. Double silencing of OsVOZ1 and OsVOZ2 in the Piz-t background decreases Piz-t protein accumulation and transcription, reactive oxygen species-dependent cell death, and resistance to M. oryzae containing AvrPiz-t. Taken together, these results indicate that OsVOZ1 and OsVOZ2 negatively regulate basal defense but contribute positively to Piz-t-mediated immunity.
Collapse
Affiliation(s)
- Jiyang Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Department of Plant Pathology, Ohio State University, Columbus, OH 43210, USA
| | - Ruyi Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Department of Plant Pathology, Ohio State University, Columbus, OH 43210, USA
| | - Hong Fang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Chongyang Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Fan Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Zeyun Hao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xiaoman You
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xuetao Shi
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Chan Ho Park
- Department of Plant Pathology, Ohio State University, Columbus, OH 43210, USA
| | - Kangyu Hua
- Department of Plant Pathology, Ohio State University, Columbus, OH 43210, USA
| | - Feng He
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Maria Bellizzi
- Department of Plant Pathology, Ohio State University, Columbus, OH 43210, USA
| | - Kieu Thi Xuan Vo
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin 17104, Korea
| | - Jong-Seong Jeon
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin 17104, Korea
| | - Yuese Ning
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Guo-Liang Wang
- Department of Plant Pathology, Ohio State University, Columbus, OH 43210, USA.
| |
Collapse
|
28
|
Herlihy JH, Long TA, McDowell JM. Iron homeostasis and plant immune responses: Recent insights and translational implications. J Biol Chem 2020; 295:13444-13457. [PMID: 32732287 DOI: 10.1074/jbc.rev120.010856] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/29/2020] [Indexed: 12/16/2022] Open
Abstract
Iron metabolism and the plant immune system are both critical for plant vigor in natural ecosystems and for reliable agricultural productivity. Mechanistic studies of plant iron home-ostasis and plant immunity have traditionally been carried out in isolation from each other; however, our growing understanding of both processes has uncovered significant connections. For example, iron plays a critical role in the generation of reactive oxygen intermediates during immunity and has been recently implicated as a critical factor for immune-initiated cell death via ferroptosis. Moreover, plant iron stress triggers immune activation, suggesting that sensing of iron depletion is a mechanism by which plants recognize a pathogen threat. The iron deficiency response engages hormone signaling sectors that are also utilized for plant immune signaling, providing a probable explanation for iron-immunity cross-talk. Finally, interference with iron acquisition by pathogens might be a critical component of the immune response. Efforts to address the global burden of iron deficiency-related anemia have focused on classical breeding and transgenic approaches to develop crops biofortified for iron content. However, our improved mechanistic understanding of plant iron metabolism suggests that such alterations could promote or impede plant immunity, depending on the nature of the alteration and the virulence strategy of the pathogen. Effects of iron biofortification on disease resistance should be evaluated while developing plants for iron biofortification.
Collapse
Affiliation(s)
- John H Herlihy
- School of Plant and Environmental Sciences, Virginia Tech, Latham Hall, Blacksburg, Virginia, USA
| | - Terri A Long
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina, USA.
| | - John M McDowell
- School of Plant and Environmental Sciences, Virginia Tech, Latham Hall, Blacksburg, Virginia, USA.
| |
Collapse
|
29
|
Lv Q, Zhang L, Zan T, Li L, Li X. Wheat RING E3 ubiquitin ligase TaDIS1 degrade TaSTP via the 26S proteasome pathway. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 296:110494. [PMID: 32540013 DOI: 10.1016/j.plantsci.2020.110494] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 05/16/2023]
Abstract
Drought stress has a great impact on wheat yields. The ubiquitin/26S proteasome system is one of the most important mechanisms employed by plants for responding to stress. E3 ubiquitin ligase is an important part of the ubiquitin/26S proteasome system. In wheat, the mechanism of E3 ubiquitin ligase TaDIS1 has not been investigated in great detail. In this study, TaSTP was identified as an interacting partner using yeast two-hybrid screening. The results obtained from bimolecular fluorescence complementation, pull-down, and co-immunoprecipitation assays also demonstrated that TaDIS1 interacts with TaSTP. In vitro ubiquitination assays showed that TaDIS1 has an E3 ubiquitin ligase activity and the results based on two TaDIS1 mutants suggested that the RING domain is essential for its E3 ubiquitin ligase activity. In addition, we used MG132 to show that TaSTP can be degraded by TaDIS1 via the 26S proteasome pathway. The transcript levels of TaSTP showed that it can also respond to different abiotic stresses, such as drought, salt, and abscisic acid treatment. RING E3 ubiquitin ligase TaDIS1 may through the posttranslational regulation of TaSTP to play an important role in drought tolerance.
Collapse
Affiliation(s)
- Qian Lv
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Li Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Ting Zan
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Liqun Li
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Xuejun Li
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China.
| |
Collapse
|
30
|
Li B, Zheng JC, Wang TT, Min DH, Wei WL, Chen J, Zhou YB, Chen M, Xu ZS, Ma YZ. Expression Analyses of Soybean VOZ Transcription Factors and the Role of GmVOZ1G in Drought and Salt Stress Tolerance. Int J Mol Sci 2020; 21:E2177. [PMID: 32245276 PMCID: PMC7139294 DOI: 10.3390/ijms21062177] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 03/11/2020] [Accepted: 03/16/2020] [Indexed: 01/31/2023] Open
Abstract
Vascular plant one-zinc-finger (VOZ) transcription factor, a plant specific one-zinc-finger-type transcriptional activator, is involved in regulating numerous biological processes such as floral induction and development, defense against pathogens, and response to multiple types of abiotic stress. Six VOZ transcription factor-encoding genes (GmVOZs) have been reported to exist in the soybean (Glycine max) genome. In spite of this, little information is currently available regarding GmVOZs. In this study, GmVOZs were cloned and characterized. GmVOZ genes encode proteins possessing transcriptional activation activity in yeast cells. GmVOZ1E, GmVOZ2B, and GmVOZ2D gene products were widely dispersed in the cytosol, while GmVOZ1G was primarily located in the nucleus. GmVOZs displayed a differential expression profile under dehydration, salt, and salicylic acid (SA) stress conditions. Among them, GmVOZ1G showed a significantly induced expression in response to all stress treatments. Overexpression of GmVOZ1G in soybean hairy roots resulted in a greater tolerance to drought and salt stress. In contrast, RNA interference (RNAi) soybean hairy roots suppressing GmVOZ1G were more sensitive to both of these stresses. Under drought treatment, soybean composite plants with an overexpression of hairy roots had higher relative water content (RWC). In response to drought and salt stress, lower malondialdehyde (MDA) accumulation and higher peroxidase (POD) and superoxide dismutase (SOD) activities were observed in soybean composite seedlings with an overexpression of hairy roots. The opposite results for each physiological parameter were obtained in RNAi lines. In conclusion, GmVOZ1G positively regulates drought and salt stress tolerance in soybean hairy roots. Our results will be valuable for the functional characterization of soybean VOZ transcription factors under abiotic stress.
Collapse
Affiliation(s)
- Bo Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing 100081, China; (B.L.); (Y.-B.Z.); (M.C.); (Y.-Z.M.)
| | - Jia-Cheng Zheng
- Anhui Science and Technology University, Fengyang 233100, China;
| | - Ting-Ting Wang
- College of Agriculture, Yangtze University; Hubei Collaborative Innovation Center for Grain Industry; Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434025, China; (T.-T.W.); (W.-L.W.)
| | - Dong-Hong Min
- College of Agronomy, Northwest A&F University/State Key Laboratory of Crop Stress Biology for Arid Areas, Yangling, Shaanxi 712100, China;
| | - Wen-Liang Wei
- College of Agriculture, Yangtze University; Hubei Collaborative Innovation Center for Grain Industry; Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434025, China; (T.-T.W.); (W.-L.W.)
| | - Jun Chen
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing 100081, China; (B.L.); (Y.-B.Z.); (M.C.); (Y.-Z.M.)
| | - Yong-Bin Zhou
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing 100081, China; (B.L.); (Y.-B.Z.); (M.C.); (Y.-Z.M.)
| | - Ming Chen
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing 100081, China; (B.L.); (Y.-B.Z.); (M.C.); (Y.-Z.M.)
| | - Zhao-Shi Xu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing 100081, China; (B.L.); (Y.-B.Z.); (M.C.); (Y.-Z.M.)
| | - You-Zhi Ma
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing 100081, China; (B.L.); (Y.-B.Z.); (M.C.); (Y.-Z.M.)
| |
Collapse
|
31
|
Zhang Z, Fan Y, Xiong J, Guo X, Hu K, Wang Z, Gao J, Wen J, Yi B, Shen J, Ma C, Fu T, Xia S, Tu J. Two young genes reshape a novel interaction network in Brassica napus. THE NEW PHYTOLOGIST 2020; 225:530-545. [PMID: 31407340 DOI: 10.1111/nph.16113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
New genes often drive the evolution of gene interaction networks. In Brassica napus, the widely used genic male sterile breeding system 7365ABC is controlled by two young genes, Bnams4b and BnaMs3. However, the interaction mechanism of these two young genes remains unclear. Here, we confirmed that Bnams4b interacts with the nuclear localised E3 ligase BRUTUS (BTS). Ectopic expression of AtBRUTUS (AtBTS) and comparison between Bnams4b -transgenic Arabidopsis and bts mutants suggested that Bnams4b may drive translocation of BTS to cause various toxic defects. BnaMs3 gained an exclusive interaction with the plastid outer-membrane translocon Toc33 compared with Bnams3 and AtTic40, and specifically compensated for the toxic effects of Bnams4b . Heat shock treatment also rescued the sterile phenotype, and high temperature suppressed the interaction between Bnams4b and BTS in yeast. Furthermore, the ubiquitin system and TOC (translocon at the outer envelope membrane of chloroplasts) component accumulation were affected in Bnams4b -transgenic Arabidopsis plants. Taken together, these results indicate that new chimeric Bnams4b carries BTS from nucleus to chloroplast, which may disrupt the normal ubiquitin-proteasome system to cause toxic effects, and these defects can be compensated by BnaMs3-Toc33 interaction or environmental heat shock. It reveals a scenario in which two population-specific coevolved young genes reshape a novel interaction network in plants.
Collapse
Affiliation(s)
- Zhiqiang Zhang
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yu Fan
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jie Xiong
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiang Guo
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Kaining Hu
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhixin Wang
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jie Gao
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jing Wen
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Bin Yi
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jinxiong Shen
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chaozhi Ma
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Tingdong Fu
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Shengqian Xia
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jinxing Tu
- National Key Laboratory of Crop Genetic Improvement, National Center of Rapeseed Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| |
Collapse
|
32
|
Kobayashi T, Ozu A, Kobayashi S, An G, Jeon JS, Nishizawa NK. OsbHLH058 and OsbHLH059 transcription factors positively regulate iron deficiency responses in rice. PLANT MOLECULAR BIOLOGY 2019; 101:471-486. [PMID: 31552586 PMCID: PMC6814640 DOI: 10.1007/s11103-019-00917-8] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 09/07/2019] [Indexed: 05/03/2023]
Abstract
Subgroup IVc basic helix-loop-helix transcription factors OsbHLH058 and OsbHLH059 positively regulate major iron deficiency responses in rice in a similar but distinct manner, putatively under partial control by OsHRZs. Under low iron availability, plants transcriptionally induce the expression of genes involved in iron uptake and translocation. OsHRZ1 and OsHRZ2 ubiquitin ligases negatively regulate this iron deficiency response in rice. The basic helix-loop-helix (bHLH) transcription factor OsbHLH060 interacts with OsHRZ1, and positively regulates iron deficiency-inducible genes. However, the functions of three other subgroup IVc bHLH transcription factors in rice, OsbHLH057, OsbHLH058, and OsbHLH059, have not yet been characterized. In the present study, we investigated the functions of OsbHLH058 and OsbHLH059 related to iron deficiency response. OsbHLH058 expression was repressed under iron deficiency, whereas the expression of OsbHLH057 and OsbHLH060 was moderately induced. Yeast two-hybrid analysis indicated that OsbHLH058 interacts with OsHRZ1 and OsHRZ2 more strongly than OsbHLH060, whereas OsbHLH059 showed no interaction. An in vitro ubiquitination assay detected no OsbHLH058 and OsbHLH060 ubiquitination by OsHRZ1 and OsHRZ2. Transgenic rice lines overexpressing OsbHLH058 showed tolerance for iron deficiency and higher iron concentration in seeds. These lines also showed enhanced expression of many iron deficiency-inducible genes involved in iron uptake and translocation under iron-sufficient conditions. Conversely, OsbHLH058 knockdown lines showed susceptibility to iron deficiency and reduced expression of many iron deficiency-inducible genes. OsbHLH059 knockdown lines were also susceptible to iron deficiency, and formed characteristic brownish regions in iron-deficient new leaves. OsbHLH059 knockdown lines also showed reduced expression of many iron deficiency-inducible genes. These results indicate that OsbHLH058 and OsbHLH059 positively regulate major iron deficiency responses in a similar but distinct manner, and that this function may be partially controlled by OsHRZs.
Collapse
Affiliation(s)
- Takanori Kobayashi
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan.
| | - Asami Ozu
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Subaru Kobayashi
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Gynheung An
- Crop Biotech Institute and Graduate School of Biotechnology, Kyung Hee University, Yongin, 17104, Korea
| | - Jong-Seong Jeon
- Crop Biotech Institute and Graduate School of Biotechnology, Kyung Hee University, Yongin, 17104, Korea
| | - Naoko K Nishizawa
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| |
Collapse
|
33
|
Kobayashi T. Understanding the Complexity of Iron Sensing and Signaling Cascades in Plants. PLANT & CELL PHYSIOLOGY 2019; 60:1440-1446. [PMID: 30796837 DOI: 10.1093/pcp/pcz038] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 02/12/2019] [Indexed: 05/06/2023]
Abstract
Under iron-deficient conditions, plants induce the expression of a set of genes involved in iron uptake and translocation. This response to iron deficiency is regulated by transcriptional networks mediated by transcription factors (TFs) and protein-level modification of key factors by ubiquitin ligases. Several of the basic helix-loop-helix TFs and the HRZ/BTS ubiquitin ligases are conserved across graminaceous and non-graminaceous plants. Other regulators are specific, such as IDEF1 and IDEF2 in graminaceous plants and FIT/FER and MYB10/72 in non-graminaceous plants. IMA/FEP peptides positively regulate the iron-deficiency responses in a wide range of plants by unknown mechanisms. Direct binding of iron or other metals to some key regulators, including HRZ/BTS and IDEF1, may be responsible for intracellular iron-sensing and -signaling events. In addition, key TFs such as FIT and IDEF1 interact with various proteins involved in signaling pathways of plant hormones, oxidative stress and metal abundance. Thus, FIT and IDEF1 might function as hubs for the integration of environmental signals to modulate the responses to iron deficiency. In addition to local iron signaling, root iron responses are modulated by shoot-derived long-distance signaling potentially mediated by phloem-mobile substances such as iron, iron chelates and IMA/FEP peptides.
Collapse
Affiliation(s)
- Takanori Kobayashi
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa, Japan
| |
Collapse
|
34
|
Rodríguez-Celma J, Chou H, Kobayashi T, Long TA, Balk J. Hemerythrin E3 Ubiquitin Ligases as Negative Regulators of Iron Homeostasis in Plants. FRONTIERS IN PLANT SCIENCE 2019; 10:98. [PMID: 30815004 PMCID: PMC6381054 DOI: 10.3389/fpls.2019.00098] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 01/22/2019] [Indexed: 05/19/2023]
Abstract
Iron (Fe) is an essential nutrient for plants, but at the same time its redox properties can make it a dangerous toxin inside living cells. Homeostasis between uptake, use and storage of Fe must be maintained at all times. A small family of unique hemerythrin E3 ubiquitin ligases found in green algae and plants play an important role in avoiding toxic Fe overload, acting as negative regulators of Fe homeostasis. Protein interaction data showed that they target specific transcription factors for degradation by the 26S proteasome. It is thought that the activity of the E3 ubiquitin ligases is controlled by Fe binding to the N-terminal hemerythrin motifs. Here, we discuss what we have learned so far from studies on the HRZ (Hemerythrin RING Zinc finger) proteins in rice, the homologous BTS (BRUTUS) and root-specific BTSL (BRUTUS-LIKE) in Arabidopsis. A mechanistic model is proposed to help focus future research questions towards a full understanding of the regulatory role of these proteins in Fe homeostasis in plants.
Collapse
Affiliation(s)
- Jorge Rodríguez-Celma
- Department of Biological Chemistry, John Innes Centre, Norwich, United Kingdom
- School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
| | - Hsuan Chou
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, United States
| | - Takanori Kobayashi
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Japan
| | - Terri A. Long
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, United States
| | - Janneke Balk
- Department of Biological Chemistry, John Innes Centre, Norwich, United Kingdom
- School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
- *Correspondence: Janneke Balk,
| |
Collapse
|