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Yu S, Wu M, Wang X, Li M, Gao X, Xu X, Zhang Y, Liu X, Yu L, Zhang Y. Common Bean ( Phaseolus vulgaris L.) NAC Transcriptional Factor PvNAC52 Enhances Transgenic Arabidopsis Resistance to Salt, Alkali, Osmotic, and ABA Stress by Upregulating Stress-Responsive Genes. Int J Mol Sci 2024; 25:5818. [PMID: 38892008 PMCID: PMC11172058 DOI: 10.3390/ijms25115818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
The NAC family of transcription factors includes no apical meristem (NAM), Arabidopsis thaliana transcription activator 1/2 (ATAF1/2), and cup-shaped cotyledon (CUC2) proteins, which are unique to plants, contributing significantly to their adaptation to environmental challenges. In the present study, we observed that the PvNAC52 protein is predominantly expressed in the cell membrane, cytoplasm, and nucleus. Overexpression of PvNAC52 in Arabidopsis strengthened plant resilience to salt, alkali, osmotic, and ABA stresses. PvNAC52 significantly (p < 0.05) reduced the degree of oxidative damage to cell membranes, proline content, and plant water loss by increasing the expression of MSD1, FSD1, CSD1, POD, PRX69, CAT, and P5CS2. Moreover, the expression of genes associated with abiotic stress responses, such as SOS1, P5S1, RD29A, NCED3, ABIs, LEAs, and DREBs, was enhanced by PvNAC52 overexpression. A yeast one-hybrid assay showed that PvNAC52 specifically binds to the cis-acting elements ABRE (abscisic acid-responsive elements, ACGTG) within the promoter. This further suggests that PvNAC52 is responsible for the transcriptional modulation of abiotic stress response genes by identifying the core sequence, ACGTG. These findings provide a theoretical foundation for the further analysis of the targeted cis-acting elements and genes downstream of PvNAC52 in the common bean.
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Affiliation(s)
- Song Yu
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.Y.); (M.W.); (X.W.); (M.L.); (X.G.); (X.X.); (Y.Z.); (X.L.)
| | - Mingxu Wu
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.Y.); (M.W.); (X.W.); (M.L.); (X.G.); (X.X.); (Y.Z.); (X.L.)
| | - Xiaoqin Wang
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.Y.); (M.W.); (X.W.); (M.L.); (X.G.); (X.X.); (Y.Z.); (X.L.)
| | - Mukai Li
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.Y.); (M.W.); (X.W.); (M.L.); (X.G.); (X.X.); (Y.Z.); (X.L.)
| | - Xinhan Gao
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.Y.); (M.W.); (X.W.); (M.L.); (X.G.); (X.X.); (Y.Z.); (X.L.)
| | - Xiangru Xu
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.Y.); (M.W.); (X.W.); (M.L.); (X.G.); (X.X.); (Y.Z.); (X.L.)
| | - Yutao Zhang
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.Y.); (M.W.); (X.W.); (M.L.); (X.G.); (X.X.); (Y.Z.); (X.L.)
| | - Xinran Liu
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.Y.); (M.W.); (X.W.); (M.L.); (X.G.); (X.X.); (Y.Z.); (X.L.)
| | - Lihe Yu
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.Y.); (M.W.); (X.W.); (M.L.); (X.G.); (X.X.); (Y.Z.); (X.L.)
- Key Laboratory of Low-Carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
| | - Yifei Zhang
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.Y.); (M.W.); (X.W.); (M.L.); (X.G.); (X.X.); (Y.Z.); (X.L.)
- Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing 163319, China
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He L, Wu Z, Wang X, Zhao C, Cheng D, Du C, Wang H, Gao Y, Zhang R, Han J, Xu J. A novel maize F-bZIP member, ZmbZIP76, functions as a positive regulator in ABA-mediated abiotic stress tolerance by binding to ACGT-containing elements. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 341:111952. [PMID: 38072329 DOI: 10.1016/j.plantsci.2023.111952] [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: 09/05/2023] [Revised: 10/31/2023] [Accepted: 12/06/2023] [Indexed: 02/10/2024]
Abstract
The group F-bZIP transcription factors (TFs) in Arabidopsis are involved in nutrient deficiency or salt stress responses. Nevertheless, our learning about the functions of group F-bZIP genes in maize remains limited. Here, we cloned a new F-bZIP gene (ZmbZIP76) from maize inbred line He344. The expression of ZmbZIP76 in maize was dramatically induced by high salt, osmotic stress and abscisic acid. Accordingly, overexpression of ZmbZIP76 increased tolerance of transgenic plants to salt and osmotic stress. In addition, ZmbZIP76 functions as a nuclear transcription factor and upregulates the expression of a range of abiotic stress-responsive genes by binding to the ACGT-containing elements, leading to enhanced reactive oxygen species (ROS) scavenging capability, increased abscisic acid level, proline content, and ratio of K+/Na+, reduced water loss rate, and membrane damage. These physiological changes caused by ZmbZIP76 ultimately enhanced tolerance of transgenic plants to salt and osmotic stress.
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Affiliation(s)
- Lin He
- Key Laboratory of Low Carbon Green Agriculture in Northeast Plain, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PRChina
| | - Zixuan Wu
- Key Laboratory of Low Carbon Green Agriculture in Northeast Plain, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PRChina
| | - Xueheyuan Wang
- Key Laboratory of Low Carbon Green Agriculture in Northeast Plain, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PRChina
| | - Changjiang Zhao
- Key Laboratory of Low Carbon Green Agriculture in Northeast Plain, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PRChina
| | - Dianjun Cheng
- Key Laboratory of Low Carbon Green Agriculture in Northeast Plain, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PRChina
| | - Chuhuai Du
- Key Laboratory of Low Carbon Green Agriculture in Northeast Plain, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PRChina
| | - Haoyu Wang
- Key Laboratory of Low Carbon Green Agriculture in Northeast Plain, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PRChina
| | - Yuan Gao
- Key Laboratory of Low Carbon Green Agriculture in Northeast Plain, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PRChina
| | - Ruijia Zhang
- Key Laboratory of Low Carbon Green Agriculture in Northeast Plain, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PRChina
| | - Jienan Han
- Institute of Crop Science, Chinese Academy of Agricultural Science, No. 12 Zhongguancun South Street, Haidian District, Beijing 100081, PR China.
| | - Jingyu Xu
- Key Laboratory of Low Carbon Green Agriculture in Northeast Plain, Ministry of Agriculture and Rural Affairs, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PRChina.
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Liu Y, Luo C, Lan M, Guo Y, Li R, Liang R, Chen S, Zhong J, Li B, Xie F, Chen C, He X. MiCOL6, MiCOL7A and MiCOL7B isolated from mango regulate flowering and stress response in transgenic Arabidopsis. PHYSIOLOGIA PLANTARUM 2024; 176:e14242. [PMID: 38439528 DOI: 10.1111/ppl.14242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/02/2024] [Accepted: 02/20/2024] [Indexed: 03/06/2024]
Abstract
The CONSTANS/CONSTANS-Like (CO/COL) family has been shown to play important roles in flowering, stress tolerance, fruit development and ripening in higher plants. In this study, three COL genes, MiCOL6, MiCOL7A and MiCOL7B, which each contain only one CCT domain, were isolated from mango (Mangifera indica), and their functions were investigated. MiCOL7A and MiCOL7B were expressed mainly at 20 days after flowering (DAF), and all three genes were highly expressed during the flowering induction period. The expression levels of the three genes were affected by light conditions, but only MiCOL6 exhibited a clear circadian rhythm. Overexpression of MiCOL6 promoted earlier flowering, while overexpression of MiCOL7A or MiCOL7B delayed flowering compared to that in the control lines of Arabidopsis thaliana under long-day (LD) and short-day (SD) conditions. Overexpressing MiCOL6, MiCOL7A or MiCOL7B in transgenic plants increased superoxide dismutase (SOD) and proline levels, decreased malondialdehyde (MAD) levels, and improved survival under drought and salt stress. In addition, yeast two-hybrid (Y2H) and bimolecular fluorescence complementation (BiFC) analyses showed that the MiCOL6, MiCOL7A and MiCOL7B proteins interact with several stress- and flower-related proteins. This work demonstrates the functions of MiCOL6, MiCOL7A and MiCOL7B and provides a foundation for further research on the role of mango COL genes in flowering regulation and the abiotic stress response.
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Affiliation(s)
- Yuan Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
| | - Cong Luo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
| | - Moying Lan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
| | - Yihang Guo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
- College of Agronomy and Horticulture, Huaihua Polytechnic College, Huaihua, Hunan
| | - Ruoyan Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
| | - Rongzhen Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
| | - Shuquan Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
| | - Junjie Zhong
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
| | - Baijun Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
| | - Fangfang Xie
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
| | - Canbin Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
| | - Xinhua He
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi
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Yang Y, Yin J, Zhu L, Xu L, Wu W, Lu Y, Chen J, Shi J, Hao Z. Genome-Wide Analysis of the Liriodendron chinense Hsf Gene Family under Abiotic Stress and Characterization of the LcHsfA2a Gene. Int J Mol Sci 2024; 25:2733. [PMID: 38473982 DOI: 10.3390/ijms25052733] [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: 11/13/2023] [Revised: 02/18/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024] Open
Abstract
Heat shock factors (Hsfs) play a crucial role in plant defense processes. However, the distribution and functional characteristics of Hsf genes in the relict plant Liriodendron chinense are still unclear. In this study, a total of 19 LcHsfs were identified and divided into three separate subgroups, comprising 10 LcHsfA, 7 LcHsfB, and 2 LcHsfC genes, respectively, based on their phylogenetic tree and the presence/absence of conserved protein domains. Whole-genome duplication and segmental duplication led to an expansion of the LhHsf gene family. The promoters of LcHsf genes are enriched for different types of cis-acting elements, including hormone responsive and abiotic-stress-responsive elements. The expression of LcHsfA3, LcHsfA4b, LcHsfA5, LcHsfB1b, and LcHsfB2b increased significantly as a result of both cold and drought treatments. LcHsfA2a, LcHsfA2b, and LcHsfA7 act as important genes whose expression levels correlate strongly with the expression of the LcHsp70, LcHsp110, and LcAPX genes under heat stress. In addition, we found that transiently transformed 35S:LcHsfA2a seedlings showed significantly lower levels of hydrogen peroxide (H2O2) after heat stress and showed a stronger thermotolerance. This study sheds light on the possible functions of LcHsf genes under abiotic stress and identifies potentially useful genes to target for molecular breeding, in order to develop more stress-resistant varieties.
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Affiliation(s)
- Yun Yang
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Jianchao Yin
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Liming Zhu
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Lin Xu
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Weihuang Wu
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Ye Lu
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Jinhui Chen
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Jisen Shi
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Zhaodong Hao
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
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Wang H, Zhao P, He Y, Su Y, Zhou X, Guo H. Transcriptome and miRNAs Profiles Reveal Regulatory Network and Key Regulators of Secondary Xylem Formation in "84K" Poplar. Int J Mol Sci 2023; 24:16438. [PMID: 38003631 PMCID: PMC10671414 DOI: 10.3390/ijms242216438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/13/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023] Open
Abstract
Secondary xylem produced by stem secondary growth is the main source of tree biomass and possesses great economic and ecological value in papermaking, construction, biofuels, and the global carbon cycle. The secondary xylem formation is a complex developmental process, and the underlying regulatory networks and potential mechanisms are still under exploration. In this study, using hybrid poplar (Populus alba × Populus glandulosa clone 84K) as a model system, we first ascertained three representative stages of stem secondary growth and then investigated the regulatory network of secondary xylem formation by joint analysis of transcriptome and miRNAs. Notably, 7507 differentially expressed genes (DEGs) and 55 differentially expressed miRNAs (DEMs) were identified from stage 1 without initiating secondary growth to stage 2 with just initiating secondary growth, which was much more than those identified from stage 2 to stage 3 with obvious secondary growth. DEGs encoding transcription factors and lignin biosynthetic enzymes and those associated with plant hormones were found to participate in the secondary xylem formation. MiRNA-target analysis revealed that a total of 85 DEMs were predicted to have 2948 putative targets. Among them, PagmiR396d-PagGRFs, PagmiR395c-PagGA2ox1/PagLHW/PagSULTR2/PagPolyubiquitin 1, PagmiR482d-PagLAC4, PagmiR167e-PagbHLH62, and PagmiR167f/g/h-PagbHLH110 modules were involved in the regulating cambial activity and its differentiation into secondary xylem, cell expansion, secondary cell wall deposition, and programmed cell death. Our results give new insights into the regulatory network and mechanism of secondary xylem formation.
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Affiliation(s)
| | | | | | | | | | - Huihong Guo
- State Key Laboratory of Tree Genetics and Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, No. 35, Tsing Hua East Road, Haidian District, Beijing 100083, China; (H.W.); (P.Z.); (Y.H.); (Y.S.); (X.Z.)
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Liao G, Luo S, Li X, Li A, Mo Y, Wang A, Xiao D, He LF, Zhan J. Identification and functional characterization of REGULATORY PARTICLE NON-ATPASE 1a-like (AhRPN1a-like) in peanuts during aluminum-induced programmed cell death. JOURNAL OF PLANT PHYSIOLOGY 2023; 289:154079. [PMID: 37703767 DOI: 10.1016/j.jplph.2023.154079] [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: 04/29/2023] [Revised: 08/24/2023] [Accepted: 08/29/2023] [Indexed: 09/15/2023]
Abstract
The toxicity of aluminum (Al) in acidic soil is a prevalent problem and causes reduced crop yields. In the plant response to Al toxicity, programmed cell death (PCD) appears to be one of the important mechanisms. However, the regulation of Al-induced PCD remains poorly understood. Here, we found that an uncharacterized protein REGULATORY PARTICLE NON-ATPASE 1a-like in peanut (AhRPN1a-like), located in the nucleus and cytoplasm, directly interacted with type I metacaspase in peanut (AhMC1). The overexpression of AhRPN1a-like in Arabidopsis strongly enhanced Al inhibition of root growth with a loss of root tip cell viability. Furthermore, in response to Al treatment, the VIGS knockdown line of AhRPN1a-like in peanut displayed decreased transcription of AhMC1, increased root growth, reduced Al-induced PCD and decreased 26S proteasomal activity. Taken together, these findings demonstrated that AhRPN1a-like interacted directly with AhMC1, and promotes the occurrence of Al-induced PCD via the 26S proteasome pathway, thereby reducing Al-resistance.
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Affiliation(s)
- Guoting Liao
- College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Shuzhen Luo
- College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Xinyue Li
- College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Ailing Li
- College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Yunchuan Mo
- College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Aiqin Wang
- College of Agriculture, Guangxi University, Nanning, Guangxi, China; Key Laboratory of Crop Cultivation and Physiology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning, 530004, China; Guangxi Key Laboratory of Agro-environment and Agric-products Safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Dong Xiao
- College of Agriculture, Guangxi University, Nanning, Guangxi, China; Key Laboratory of Crop Cultivation and Physiology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning, 530004, China; Guangxi Key Laboratory of Agro-environment and Agric-products Safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Long-Fei He
- College of Agriculture, Guangxi University, Nanning, Guangxi, China; Key Laboratory of Crop Cultivation and Physiology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning, 530004, China; Guangxi Key Laboratory of Agro-environment and Agric-products Safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Jie Zhan
- College of Agriculture, Guangxi University, Nanning, Guangxi, China; Key Laboratory of Crop Cultivation and Physiology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning, 530004, China; Guangxi Key Laboratory of Agro-environment and Agric-products Safety, College of Agriculture, Guangxi University, Nanning, Guangxi, China.
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Zhang E, Zhang S, Li G, Zhang Z, Liu J. Identification and Verification of Candidate miRNA Biomarkers with Application to Infection with Emiliania huxleyi Virus. Genes (Basel) 2023; 14:1716. [PMID: 37761856 PMCID: PMC10531489 DOI: 10.3390/genes14091716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 09/29/2023] Open
Abstract
The interactions of Emiliania huxleyi and its specific lytic virus (EhV) have a profound influence on marine biogeochemical carbon-sulfur cycles and play a prominent role in global climate change. MicroRNAs (miRNAs) have emerged as promising candidates with extensive diagnostic potential due to their role in virus-host interactions. However, the application of miRNA signatures as diagnostic markers in marine viral infection has made limited progress. Based on our previous small-RNA sequencing data, one host miRNA biomarker that is upregulated in early infection and seven viral miRNA biomarkers that are upregulated in late infection were identified and verified using qRT-PCR and a receiver operating characteristic curve analysis in pure culture, mixed culture, and natural seawater culture. The host ehx-miR20-5p was able to significantly differentiate infection groups from the control in the middle (24 h post-infection, hpi) and late infection (48 hpi) phases, while seven virus-derived miRNA biomarkers could diagnose the early and late stages of EhV infection. Functional enrichment analysis showed that these miRNAs participated in numerous essential metabolic pathways, including gene transcription and translation, cell division-related pathways, protein-degradation-related processes, and lipid metabolism. Additionally, a dual-luciferase reporter assay confirmed the targeted relationship between a viral ehv-miR7-5p and the host dihydroceramide desaturase gene (hDCD). This finding suggests that the virus-derived miRNA has the ability to inhibit the host sphingolipid metabolism, which is a specific characteristic of EhV infection during the late stage. Our data revealed a cluster of potential miRNA biomarkers with significant regulatory functions that could be used to diagnose EhV infection, which has implications for assessing the infectious activity of EhV in a natural marine environment.
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Affiliation(s)
| | | | | | | | - Jingwen Liu
- College of Ocean Food and Biological Engineering, Jimei University, No. 43, Jiyuan Road, Xiamen 361021, China; (E.Z.); (S.Z.); (G.L.); (Z.Z.)
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Schwarze J, Carolan JC, Stewart GS, McCabe PF, Kacprzyk J. The boundary of life and death: changes in mitochondrial and cytosolic proteomes associated with programmed cell death of Arabidopsis thaliana suspension culture cells. FRONTIERS IN PLANT SCIENCE 2023; 14:1194866. [PMID: 37593044 PMCID: PMC10431908 DOI: 10.3389/fpls.2023.1194866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 06/22/2023] [Indexed: 08/19/2023]
Abstract
Introduction Despite the critical role of programmed cell death (PCD) in plant development and defense responses, its regulation is not fully understood. It has been proposed that mitochondria may be important in the control of the early stages of plant PCD, but the details of this regulation are currently unknown. Methods We used Arabidopsis thaliana cell suspension culture, a model system that enables induction and precise monitoring of PCD rates, as well as chemical manipulation of this process to generate a quantitative profile of the alterations in mitochondrial and cytosolic proteomes associated with early stages of plant PCD induced by heat stress. The cells were subjected to PCD-inducing heat levels (10 min, 54°C), with/without the calcium channel inhibitor and PCD blocker LaCl3. The stress treatment was followed by separation of cytosolic and mitochondrial fractions and mass spectrometry-based proteome analysis. Results Heat stress induced rapid and extensive changes in protein abundance in both fractions, with release of mitochondrial proteins into the cytosol upon PCD induction. In our system, LaCl3 appeared to act downstream of cell death initiation signal, as it did not affect the release of mitochondrial proteins, but instead partially inhibited changes occurring in the cytosolic fraction, including upregulation of proteins with hydrolytic activity. Discussion We characterized changes in protein abundance and localization associated with the early stages of heat stress-induced PCD. Collectively, the generated data provide new insights into the regulation of cell death and survival decisions in plant cells.
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Affiliation(s)
- Johanna Schwarze
- School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | | | - Gavin S. Stewart
- School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Paul F. McCabe
- School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Joanna Kacprzyk
- School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
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Xue J, Sun H, Zhou X, Guo H, Wang Y. Exploration of the Regulatory Pathways and Key Genes Involved in the Response to Saline-Alkali Stress in Betula platyphylla via RNA-Seq Analysis. PLANTS (BASEL, SWITZERLAND) 2023; 12:2435. [PMID: 37446997 DOI: 10.3390/plants12132435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/07/2023] [Accepted: 06/22/2023] [Indexed: 07/15/2023]
Abstract
The pH of saline-alkali soil is high because of carbonate salts, and the deleterious effects of saline-alkali soil on the growth of plants are greater than those of saline soil. Few studies have examined the saline-alkali tolerance of Betula platyphylla at the molecular level. To clarify the regulatory mechanism underlying saline-alkali tolerance in B. platyphylla, RNA sequencing analysis of B. platyphylla seedlings treated with NaHCO3 was conducted. Differences in gene expression in the roots of B. platyphylla seedlings under saline-alkali stress (induced via NaHCO3) for 3 h and 6 h were characterized, and a total of 595 and 607 alkali stress-responsive genes were identified, respectively. Most differentially expressed genes were involved in stress, signal transduction, secondary metabolic process, regulation of jasmonic acid, and the abiotic stimulus signaling pathway. The single nucleotide polymorphism loci in the differentially expressed genes were associated with the alkaline-salt tolerance in birch germplasm. In addition, birch plants overexpressing WRKY70 and NAC9 were obtained using the A. tumefaciens-mediated transient transformation method, and these two genes were found to play key roles in saline-alkali tolerance. Additional study revealed that WRKY70 and NAC9 can increase resistance to saline-alkali stress by enhancing reactive oxygen species scavenging and inhibiting cell death in birch plants. The results of this study enhance our understanding of the saline-alkali stress tolerance of B. platyphylla at the molecular level, and provide several key genes that could be used in the breeding of birch plants in the future.
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Affiliation(s)
- Jukun Xue
- Department of Life Science and Technology, Mudanjiang Normal University, Mudanjiang 157011, China
| | - Hu Sun
- College of Forestry, Shenyang Agricultural University, Shenyang 110866, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang 110866, China
| | - Xuemei Zhou
- Department of Life Science and Technology, Mudanjiang Normal University, Mudanjiang 157011, China
| | - Huiyan Guo
- College of Forestry, Shenyang Agricultural University, Shenyang 110866, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang 110866, China
| | - Yucheng Wang
- College of Forestry, Shenyang Agricultural University, Shenyang 110866, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang 110866, China
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10
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Pagano P, Pagano A, Paternolli S, Balestrazzi A, Macovei A. Integrative Transcriptomics Data Mining to Explore the Functions of TDP1α and TDP1β Genes in the Arabidopsis thaliana Model Plant. Genes (Basel) 2023; 14:genes14040884. [PMID: 37107642 PMCID: PMC10137840 DOI: 10.3390/genes14040884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/07/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
The tyrosyl-DNA phosphodiesterase 1 (TDP1) enzyme hydrolyzes the phosphodiester bond between a tyrosine residue and the 3'-phosphate of DNA in the DNA-topoisomerase I (TopI) complex, being involved in different DNA repair pathways. A small TDP1 gene subfamily is present in plants, where TDP1α has been linked to genome stability maintenance, while TDP1β has unknown functions. This work aimed to comparatively investigate the function of the TDP1 genes by taking advantage of the rich transcriptomics databases available for the Arabidopsis thaliana model plant. A data mining approach was carried out to collect information regarding gene expression in different tissues, genetic backgrounds, and stress conditions, using platforms where RNA-seq and microarray data are deposited. The gathered data allowed us to distinguish between common and divergent functions of the two genes. Namely, TDP1β seems to be involved in root development and associated with gibberellin and brassinosteroid phytohormones, whereas TDP1α is more responsive to light and abscisic acid. During stress conditions, both genes are highly responsive to biotic and abiotic treatments in a time- and stress-dependent manner. Data validation using gamma-ray treatments applied to Arabidopsis seedlings indicated the accumulation of DNA damage and extensive cell death associated with the observed changes in the TDP1 genes expression profiles.
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Affiliation(s)
- Paola Pagano
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, 27100 Pavia, Italy
| | - Andrea Pagano
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, 27100 Pavia, Italy
| | - Stefano Paternolli
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, 27100 Pavia, Italy
| | - Alma Balestrazzi
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, 27100 Pavia, Italy
| | - Anca Macovei
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, 27100 Pavia, Italy
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11
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Liu H, Sun J, Zou J, Li B, Jin H. MeJA-mediated enhancement of salt-tolerance of Populus wutunensis by 5-aminolevulinic acid. BMC PLANT BIOLOGY 2023; 23:185. [PMID: 37024791 PMCID: PMC10077631 DOI: 10.1186/s12870-023-04161-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/09/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND 5-Aminolevulinic acid (ALA) is a natural and environmentally benign multifunctional plant growth regulator involved in the regulation of plant tolerance to various environmental stresses. This research aimed to explore the molecular mechanisms of salt tolerance in Populus wutunensis induced by exogenous ALA using physiological and transcriptomic analyses. RESULTS Physiological results showed that 50 mg·L- 1 ALA-treatment significantly reduced the malondialdehyde (MDA) content and the relative electrical conductivity (REC) and enhanced antioxidant activities of enzymes such as SOD, POD and CAT in salt-stressed P. wutunensis seedlings. Transcriptome analysis identified ALA-induced differentially expressed genes (DEGs) associating with increased salt-tolerance in P. wutunensis. GO and KEGG enrichment analyses showed that ALA activated the jasmonic acid signaling and significantly enhanced the protein processing in endoplasmic reticulum and the flavonoid biosynthesis pathways. Results of the hormone-quantification by LC-MS/MS-based assays showed that ALA could increase the accumulation of methyl jasmonate (MeJA) in salt-stressed P. wutunensis. Induced contents of soluble proteins and flavonoids by exogenous ALA in salt-treated seedlings were also correlated with the MeJA content. CONCLUSION 5-aminolevulinic acid improved the protein-folding efficiency in the endoplasmic reticulum and the flavonoid-accumulation through the MeJA-activated jasmonic acid signaling, thereby increased salt-tolerance in P. wutunensis.
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Affiliation(s)
- Huan Liu
- College of Environment and Bioresource, Dalian Minzu University, No 18, Liaohexi Road, 116600 Dalian, Liaoning China
| | - Jingliang Sun
- College of Environment and Bioresource, Dalian Minzu University, No 18, Liaohexi Road, 116600 Dalian, Liaoning China
| | - Jixiang Zou
- College of Environment and Bioresource, Dalian Minzu University, No 18, Liaohexi Road, 116600 Dalian, Liaoning China
| | - Baisheng Li
- College of Environment and Bioresource, Dalian Minzu University, No 18, Liaohexi Road, 116600 Dalian, Liaoning China
| | - Hua Jin
- College of Environment and Bioresource, Dalian Minzu University, No 18, Liaohexi Road, 116600 Dalian, Liaoning China
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12
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Welch T, Bayon C, Rudd JJ, Kanyuka K, Kettles GJ. Induction of distinct plant cell death programs by secreted proteins from the wheat pathogen Zymoseptoria tritici. Sci Rep 2022; 12:17880. [PMID: 36284131 PMCID: PMC9596407 DOI: 10.1038/s41598-022-22660-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 10/18/2022] [Indexed: 01/20/2023] Open
Abstract
Cell death processes in eukaryotes shape normal development and responses to the environment. For plant-microbe interactions, initiation of host cell death plays an important role in determining disease outcomes. Cell death pathways are frequently initiated following detection of pathogen-derived molecules which can lead to resistance or susceptibility to disease depending on pathogen lifestyle. We previously identified several small secreted proteins (SSPs) from the wheat-infecting fungus Zymoseptoria tritici that induce rapid cell death in Nicotiana benthamiana following Agrobacterium-mediated delivery and expression (agroinfiltration). Here we investigated whether the execution of host cells was mechanistically similar in response to different Z. tritici SSPs. Using RNA sequencing, we found that transient expression of four Z. tritici SSPs led to massive transcriptional reprogramming within 48 h of agroinfiltration. We observed that distinct host gene expression profiles were induced dependent on whether cell death occurs in a cell surface immune receptor-dependent or -independent manner. These gene expression profiles involved differential transcriptional networks mediated by WRKY, NAC and MYB transcription factors. In addition, differential expression of genes belonging to different classes of receptor-like proteins and receptor-like kinases was observed. These data suggest that different Z. tritici SSPs trigger differential transcriptional reprogramming in plant cells.
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Affiliation(s)
- Thomas Welch
- grid.6572.60000 0004 1936 7486Birmingham Institute of Forest Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK ,grid.6572.60000 0004 1936 7486School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK
| | - Carlos Bayon
- grid.418374.d0000 0001 2227 9389Wheat Pathogenomics Team, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ UK
| | - Jason J. Rudd
- grid.418374.d0000 0001 2227 9389Wheat Pathogenomics Team, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ UK
| | - Kostya Kanyuka
- grid.17595.3f0000 0004 0383 6532Cambridge Crop Research, National Institute of Agricultural Botany (NIAB), 93 Lawrence Weaver Road, Cambridge, CB3 0LE UK
| | - Graeme J. Kettles
- grid.6572.60000 0004 1936 7486Birmingham Institute of Forest Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK ,grid.6572.60000 0004 1936 7486School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK
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13
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Guo H, Sun X, Wang B, Wu D, Sun H, Wang Y. The upstream regulatory mechanism of BplMYB46 and the function of upstream regulatory factors that mediate resistance to stress in Betula platyphylla. FRONTIERS IN PLANT SCIENCE 2022; 13:1030459. [PMID: 36388548 PMCID: PMC9640943 DOI: 10.3389/fpls.2022.1030459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Previously, we have shown that the transcription factor BplMYB46 in Betula platyphylla can enhance tolerance to salt and osmotic stress and promote secondary cell wall deposition, and we characterized its downstream regulatory mechanism. However, its upstream regulatory mechanism remains unclear. Here, the promoter activity and upstream regulatory factors of BplMYB46 were studied. Analyses of β-glucuronidase (GUS) staining and activity indicated that BplMYB46 promoter was specific temporal and spatial expression, and its expression can be induced by salt and osmotic stress. We identified three upstream regulatory factors of BplMYB46: BpDof1, BpWRKY3, and BpbZIP3. Yeast-one hybrid assays, GUS activity, chromatin immunoprecipitation, and quantitative real-time polymerase chain reaction revealed that BpDof1, BpWRKY3, and BpbZIP3 can directly regulate the expression of BplMYB46 by specifically binding to Dof, W-box, and ABRE elements in the BplMYB46 promoter, respectively. BpDof1, BpWRKY3, and BpbZIP3 were all localized to the nucleus, and their expressions can be induced by stress. Overexpression of BpDof1, BpWRKY3, and BpbZIP3 conferred the resistance of transgenic birch plants to salt and osmotic stress. Our findings provide new insights into the upstream regulatory mechanism of BplMYB46 and reveal new upstream regulatory genes that mediate resistance to adverse environments. The genes identified in our study provide novel targets for the breeding of forest tree species.
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Affiliation(s)
- Huiyan Guo
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Xiaomeng Sun
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Bo Wang
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Di Wu
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Hu Sun
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Yucheng Wang
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
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14
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He Z, Tian Z, Zhang Q, Wang Z, Huang R, Xu X, Wang Y, Ji X. Genome-wide identification, expression and salt stress tolerance analysis of the GRAS transcription factor family in Betula platyphylla. FRONTIERS IN PLANT SCIENCE 2022; 13:1022076. [PMID: 36352865 PMCID: PMC9638169 DOI: 10.3389/fpls.2022.1022076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
The GRAS gene family is a plant-specific family of transcription factors and play a vital role in many plant growth processes and abiotic stress responses. Nevertheless, the functions of the GRAS gene family in woody plants, especially in Betula platyphylla (birch), are hardly known. In this study, we performed a genome-wide analysis of 40 BpGRAS genes (BpGRASs) and identified typical GRAS domains of most BpGRASs. The BpGRASs were unevenly distributed on 14 chromosomes of birch and the phylogenetic analysis of six species facilitated the clustering of 265 GRAS proteins into 17 subfamilies. We observed that closely related GRAS homologs had similar conserved motifs according to motif analysis. Besides, an analysis of the expression patterns of 26 BpGRASs showed that most BpGRASs were highly expressed in the leaves and responded to salt stress. Six BpGRASs were selected for cis-acting element analysis because of their significant upregulation under salt treatment, indicating that many elements were involved in the response to abiotic stress. This result further confirmed that these BpGRASs might participate in response to abiotic stress. Transiently transfected birch plants with transiently overexpressed 6 BpGRASs and RNAi-silenced 6 BpGRASs were generated for gain- and loss-of-function analysis, respectively. In addition, overexpression of BpGRAS34 showed phenotype resistant to salt stress, decreased the cell death and enhanced the reactive oxygen species (ROS) scavenging capabilities and proline content under salt treatment, consistent with the results in transiently transformed birch plants. This study is a systematic analysis of the GRAS gene family in birch plants, and the results provide insight into the molecular mechanism of the GRAS gene family responding to abiotic stress in birch plants.
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Affiliation(s)
- Zihang He
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Zengzhi Tian
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Qun Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Zhibo Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Ruikun Huang
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Xin Xu
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Yucheng Wang
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Xiaoyu Ji
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China
- The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
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15
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Liu Y, Luo C, Liang R, Lan M, Yu H, Guo Y, Chen S, Lu T, Mo X, He X. Genome-wide identification of the mango CONSTANS ( CO) family and functional analysis of two MiCOL9 genes in transgenic Arabidopsis. FRONTIERS IN PLANT SCIENCE 2022; 13:1028987. [PMID: 36325546 PMCID: PMC9618732 DOI: 10.3389/fpls.2022.1028987] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 09/28/2022] [Indexed: 06/14/2023]
Abstract
CONSTANS/CONSTANS-like (CO/COL) transcription factors play a vital role in the photoperiodic flowering pathway. However, the biological functions of COL genes in mango are unclear. In this study, we identified 31 COL genes from the 'Jin Huang' mango genome and divided them into three groups according to the specific gene structure and protein domain characteristics. These 31 MiCOL genes were heterogeneously distributed on 14 chromosomes. Expression pattern analysis showed that most MiCOL genes were mainly expressed in leaves and stems and during the floral induction period, followed by the floral differentiation period. The expression of COL genes was induced by drought and salt stress, but the expression patterns of different genes were different, which may suggest that MiCOL genes are involved in the abiotic stress response of mango. Under salt and drought conditions, two MiCOL9 genes can improve the resistance of Arabidopsis by improving the scavenging ability of ROS and proline accumulation and reducing the MDA content. Additionally, overexpression of MiCOL9 genes significantly inhibited flowering in transgenic Arabidopsis. This work provides an important foundation for understanding the biological roles of mango COL genes in plant growth, development and stress responses.
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Affiliation(s)
- Yuan Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
| | - Cong Luo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
| | - Rongzhen Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
| | - Moying Lan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
| | - Haixia Yu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
| | - Yihang Guo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
| | - Shuquan Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
| | - Tingting Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
| | - Xiao Mo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
| | - Xinhua He
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, China
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16
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Chen YX, Li W, Zeng H, Zhou G, Cai Q. Transcriptome Analysis Reveals the Mechanism of dill Seed Essential oil Against Sclerotinia sclerotiorum. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221119910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Sclerotinia sclerotiorum is a notorious fungal pathogen with a broad host range, including many important crops. A previous study showed dill seed essential oil (DSEO) could inhibit S sclerotiorum pathogenicity and protect canola production. However, the molecular basis of DSEO anti-fungal activity is still not well studied. To investigate the mechanism of DSEO anti-fungal activity, RNA-sequencing was employed to identify differentially expressed genes (DEGs) of S sclerotiorum in response to DSEO treatment. A total of 2470, 3218, and 3793 DEGs were identified in S sclerotiorum after being treated by DSEO for 0.5, 1, and 2 h, respectively. These genes that express changes in the early stage are more likely affected directly by DSEO. Gene Ontology (GO) analysis revealed that these genes were mainly related to transmembrane transport, cell membrane, ribosome biogenesis, and proteasome complex. DSEO treatment primarily affected the membrane part of the fungal cell, particularly the endoplasmic reticulum (ER) membrane at 0.5 and 1-hour treatment. In addition, a bunch of DEGs associated with the proteasome pathway was markedly enriched at 2 h of treatment. It is speculated that DSEO achieves antifungal effects by influencing these targets or pathways. The information obtained in this study expanded the understanding of the antifungal mechanism of DSEO and enriched the resources available for interpreting its mechanism at molecular level.
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Affiliation(s)
- Yu-Xin Chen
- Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin, Tarim University, Alar, Xinjiang, China
- National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), School of Food and Biological Engineering, Hubei University of Technology, Wuhan, PR China
| | - Wei Li
- State Key Laboratory of Hybrid Rice, College of Life Science, Wuhan University, Wuhan, China
| | - Hong Zeng
- Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin, Tarim University, Alar, Xinjiang, China
| | - Gao Zhou
- National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), School of Food and Biological Engineering, Hubei University of Technology, Wuhan, PR China
| | - Qiang Cai
- State Key Laboratory of Hybrid Rice, College of Life Science, Wuhan University, Wuhan, China
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17
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Talloji P, Nehlin L, Hüttel B, Winter N, Černý M, Dufková H, Hamali B, Hanczaryk K, Novák J, Hermanns M, Drexler N, Eifler K, Schlaich N, Brzobohatý B, Bachmair A. Transcriptome, metabolome and suppressor analysis reveal an essential role for the ubiquitin-proteasome system in seedling chloroplast development. BMC PLANT BIOLOGY 2022; 22:183. [PMID: 35395773 PMCID: PMC8991883 DOI: 10.1186/s12870-022-03536-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 03/15/2022] [Indexed: 05/25/2023]
Abstract
BACKGROUND Many regulatory circuits in plants contain steps of targeted proteolysis, with the ubiquitin proteasome system (UPS) as the mediator of these proteolytic events. In order to decrease ubiquitin-dependent proteolysis, we inducibly expressed a ubiquitin variant with Arg at position 48 instead of Lys (ubK48R). This variant acts as an inhibitor of proteolysis via the UPS, and allowed us to uncover processes that are particularly sensitive to UPS perturbation. RESULTS Expression of ubK48R during germination leads to seedling death. We analyzed the seedling transcriptome, proteome and metabolome 24 h post ubK48R induction and confirmed defects in chloroplast development. We found that mutations in single genes can suppress seedling lethality, indicating that a single process in seedlings is critically sensitive to decreased performance of the UPS. Suppressor mutations in phototropin 2 (PHOT2) suggest that a contribution of PHOT2 to chloroplast protection is compromised by proteolysis inhibition. CONCLUSIONS Overall, the results reveal protein turnover as an integral part of a signal transduction chain that protects chloroplasts during development.
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Affiliation(s)
- Prabhavathi Talloji
- Department of Biochemistry and Cell Biology, Max Perutz Labs/Center for Molecular Biology, University of Vienna, A-1030, Vienna, Austria
| | - Lilian Nehlin
- Department of Biochemistry and Cell Biology, Max Perutz Labs/Center for Molecular Biology, University of Vienna, A-1030, Vienna, Austria
| | - Bruno Hüttel
- Max Planck Genome Centre Cologne, Max Planck Institute for Plant Breeding Research, 50829, Cologne, Germany
| | - Nikola Winter
- Department of Biochemistry and Cell Biology, Max Perutz Labs/Center for Molecular Biology, University of Vienna, A-1030, Vienna, Austria
| | - Martin Černý
- Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, CZ-613 00, Brno, Czech Republic
| | - Hana Dufková
- Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, CZ-613 00, Brno, Czech Republic
| | - Bulut Hamali
- Department of Biochemistry and Cell Biology, Max Perutz Labs/Center for Molecular Biology, University of Vienna, A-1030, Vienna, Austria
- Present address: Department of Integrative Biology, Oregon State University, 3029 Cordley Hall, Corvallis, OR, 97331, USA
| | - Katarzyna Hanczaryk
- Department of Biochemistry and Cell Biology, Max Perutz Labs/Center for Molecular Biology, University of Vienna, A-1030, Vienna, Austria
| | - Jan Novák
- Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, CZ-613 00, Brno, Czech Republic
| | - Monika Hermanns
- Institute of Plant Physiology (Bio III), RWTH-Aachen, 52056, Aachen, Germany
| | - Nicole Drexler
- Vienna Biocenter Core Facilities, Electron Microscopy, A-1030, Vienna, Austria
| | - Karolin Eifler
- Department of Biochemistry and Cell Biology, Max Perutz Labs/Center for Molecular Biology, University of Vienna, A-1030, Vienna, Austria
| | - Nikolaus Schlaich
- Institute of Plant Physiology (Bio III), RWTH-Aachen, 52056, Aachen, Germany
| | - Břetislav Brzobohatý
- Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, CZ-613 00, Brno, Czech Republic
- CEITEC - Central European Institute of Technology, Mendel University in Brno, CZ-61300, Brno, Czech Republic
| | - Andreas Bachmair
- Department of Biochemistry and Cell Biology, Max Perutz Labs/Center for Molecular Biology, University of Vienna, A-1030, Vienna, Austria.
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18
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Sun S, Ren Y, Wang D, Farooq T, He Z, Zhang C, Li S, Yang X, Zhou X. A group I WRKY transcription factor regulates mulberry mosaic dwarf-associated virus-triggered cell death in Nicotiana benthamiana. MOLECULAR PLANT PATHOLOGY 2022; 23:237-253. [PMID: 34738705 PMCID: PMC8743015 DOI: 10.1111/mpp.13156] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 05/27/2023]
Abstract
Geminiviruses constitute the largest group of known plant viruses and cause devastating losses to a wide range of crops and woody plants globally. Mulberry mosaic dwarf-associated virus (MMDaV), identified from Chinese mulberry trees via small RNA-based deep sequencing, is a divergent monopartite geminivirus belonging to the genus Mulcrilevirus of the family Geminiviridae. Previous studies have shown that plants employ multiple layers of defence to protect themselves from geminivirus infection. The interplay between plant and MMDaV is nevertheless less studied. This study presents evidence that MMDaV triggers hypersensitive response (HR)-mediated antiviral defence in Nicotiana benthamiana plants. We show that the RepA protein of MMDaV is engaged in HR-type cell death induction. We find that the RepA mutants with compromised nuclear localization ability impair their capabilities of cell death induction. Virus-induced gene silencing of the key components of the R protein-mediated signalling pathway reveals that down-regulation of the nucleus-targeting NbWRKY1 alleviates the cell death induction activity of RepA. We further demonstrate that RepA up-regulates the transcript level of NbWRKY1. Furthermore, expression of RepA in N. benthamiana confers plant resistance against two begomoviruses. We propose that plant resistance against RepA can be potentially used to improve plant defence against geminiviruses in crops.
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Affiliation(s)
- Shaoshuang Sun
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
| | - Yanxiang Ren
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
- State Key Laboratory of Agro‐Biotechnology and Ministry of Agriculture Key Laboratory of Soil MicrobiologyCollege of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Dongxue Wang
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
| | - Tahir Farooq
- Plant Protection Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouChina
| | - Zifu He
- Plant Protection Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouChina
| | - Chao Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
| | - Shifang Li
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
| | - Xiuling Yang
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
| | - Xueping Zhou
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina
- State Key Laboratory of Rice Biology, Institute of BiotechnologyZhejiang UniversityHangzhouChina
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19
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Gajić D, Lukajić B, Hasanagić D, Škondrić S, Davidović-Plavšić B, Kukavica B. Antioxidative enzymes in root and leaf of Rumex obtusifolius L. grown on ash amended soil. KRAGUJEVAC JOURNAL OF SCIENCE 2022. [DOI: 10.5937/kgjsci2244143g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Antioxidant enzymes are one of the most important links in the plant defense system to various types of environmental stress, so their response to a particular type of stress may indicate the sensitivity or tolerance of the plant species. Our paper studied the difference in antioxidative enzyme [catalase (CAT, EC 1.11.1.6), superoxide dismutase (SOD, EC 1.15.1.1) and Class III peroxidases (POD, EC 1.11.1.7)], isoenzyme pattern and activities between Rumex obtusifolius L. (Polygonaceae) plants grown on ash amended and uncontaminated soil. Modified SDS-PAGE electrophoresis revealed the presence of a new POD isoform in leaf samples growing on ash-amended soil, although the activity of POD in the leaves did not change significantly compared to control plants. On the other hand, in the roots of ash-growing plants POD activity decreased by 90%. Single CAT isoform was detected in both leaf samples, and results indicate 47% higher CAT activity in leaves of ash growing plants. Native electrophoresis detected two SOD isoforms in leaves and roots from the control plant. SOD isoforms were inhibited in the roots of plants grown on ash. The paper indicates the possible role of CAT, SOD and POD in the adaptive response of R. obtusifolius plants on ash amended soil.
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20
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KARPUZ B, ÇAKIR Ö. Effect of proteasome inhibitor MG132 on the expression of oxidative metabolism related genes in tomato. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.52420] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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21
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Integration of Small RNA and Degradome Sequencing Reveals the Regulatory Network of Al-Induced Programmed Cell Death in Peanut. Int J Mol Sci 2021; 23:ijms23010246. [PMID: 35008672 PMCID: PMC8745729 DOI: 10.3390/ijms23010246] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/23/2021] [Accepted: 12/24/2021] [Indexed: 12/18/2022] Open
Abstract
Peanut is one of the most important oil crops in the world. In China, the peanut is highly produced in its southern part, in which the arable land is dominated by acid soil. At present, miRNAs have been identified in stress response, but their roles and mechanisms are not clear, and no miRNA studies have been found related to aluminum (Al)-induced programmed cell death (PCD). In the present study, transcriptomics, sRNAs, and degradome analysis in the root tips of two peanut cultivars ZH2 (Al-sensitive, S) and 99-1507 (Al-tolerant, T) were carried out. Here, we generated a comprehensive resource focused on identifying key regulatory miRNA-target circuits that regulate PCD under Al stress. Through deep sequencing, 2284 miRNAs were identified and 147 miRNAs were differentially expressed under Al stress. Furthermore, 19237 target genes of 749 miRNAs were validated by degradome sequencing. GO and KEGG analyses of differential miRNA targets showed that the pathways of synthesis and degradation of ketone bodies, citrate cycle (TCA cycle), and peroxisome were responded to Al stress. The combined analysis of the degradome data sets revealed 89 miRNA-mRNA interactions that may regulate PCD under Al stress. Ubiquitination may be involved in Al-induced PCD in peanut. The regulatory networks were constructed based on the differentially expressed miRNAs and their targets related to PCD. Our results will provide a useful platform to research on PCD induced by Al and new insights into the genetic engineering for plant stress response.
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22
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Wang R, Deng M, Yang C, Yu Q, Zhang L, Zhu Q, Guo X. A Qa-SNARE complex contributes to soybean cyst nematode resistance via regulation of mitochondria-mediated cell death. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:7145-7162. [PMID: 34165531 DOI: 10.1093/jxb/erab301] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 06/23/2021] [Indexed: 05/27/2023]
Abstract
The resistance to Heterodera glycines 1 (Rhg1) locus is widely used by soybean breeders to reduce yield loss caused by soybean cyst nematode (SCN). α-SNAP (α-soluble NSF attachment protein) within Rhg1 locus contributes to SCN resistance by modulation of cell status at the SCN feeding site; however, the underlying mechanism is largely unclear. Here, we identified an α-SNAP-interacting protein, GmSYP31A, a Qa-SNARE (soluble NSF attachment protein receptor) protein from soybean. Expression of GmSYP31A significantly induced cell death in Nicotiana benthamiana leaves, and co-expression of α-SNAP and GmSYP31A could accelerate cell death. Overexpression of GmSYP31A increased SCN resistance, while silencing or overexpression of a dominant-negative form of GmSYP31A increased SCN sensitivity. GmSYP31A expression also disrupted endoplasmic reticulum-Golgi trafficking, and the exocytosis pathway. Moreover, α-SNAP was also found to interact with GmVDAC1D (voltage-dependent anion channel). The cytotoxicity induced by the expression of GmSYP31A could be relieved either with the addition of an inhibitor of VDAC protein, or by silencing the VDAC gene. Taken together, our data not only demonstrate that α-SNAP works together with GmSYP31A to increase SCN resistance through triggering cell death, but also highlight the unexplored link between the mitochondrial apoptosis pathway and vesicle trafficking.
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Affiliation(s)
- Rui Wang
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Miaomiao Deng
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Chao Yang
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Qianqian Yu
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Lei Zhang
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Qun Zhu
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Xiaoli Guo
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
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23
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Sun S, Wang B, Jiang Q, Li Z, Jia S, Wang Y, Guo H. Genome-wide analysis of BpDof genes and the tolerance to drought stress in birch ( Betula platyphylla). PeerJ 2021; 9:e11938. [PMID: 34513325 PMCID: PMC8395574 DOI: 10.7717/peerj.11938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 07/19/2021] [Indexed: 01/23/2023] Open
Abstract
Background DNA binding with one finger (Dof) proteins are plant-specific transcription factors playing vital roles in developmental processes and stress responses in plants. Nevertheless, the characterizations, expression patterns, and functions of the Dof family under drought stress (a key determinant of plant physiology and metabolic homeostasis) in woody plants remain unclear. Methods The birch (Betula platyphylla var. mandshuric) genome and plant TFDB database were used to identify Dof gene family members in birch plants. ClustalW2 of BioEdit v7.2.1, MEGA v7.0, ExPASy ProtParam tool, Subloc, TMHMM v2.0, GSDS v2.0, MEME, TBtools, KaKs Calculator v2.0, and PlantCARE were respectively used to align the BpDof sequences, build a phylogenetic tree, identify the physicochemical properties, analyze the chromosomal distribution and synteny, and identify the cis-elements in the promoter regions of the 26 BpDof genes. Additionally, the birch seedlings were exposed to PEG6000-simulated drought stress, and the expression patterns of the BpDof genes in different tissues were analyzed by qRT-PCR. The histochemical staining and the evaluation of physiological indexes were performed to assess the plant tolerance to drought with transient overexpression of BpDof4, BpDof11, and BpDof17 genes. SPSS software and ANOVA were used to conduct all statistical analyses and determine statistically significant differences between results. Results A total of 26 BpDof genes were identified in birch via whole-genome analysis. The conserved Dof domain with a C(x)2C(x)21C(x)2C zinc finger motif was present in all BpDof proteins. These birch BpDofs were classified into four groups (A to D) according to the phylogenetic analysis of Arabidopsis thaliana Dof genes. BpDof proteins within the same group mostly possessed similar motifs, as detected by conserved motif analysis. The exon–intron analysis revealed that the structures of BpDof genes differed, indicating probable gene gain and lose during the BpDof evolution. The chromosomal distribution and synteny analysis showed that the 26 BpDofs were unevenly distributed on 14 chromosomes, and seven duplication events among six chromosomes were found. Cis-acting elements were abundant in the promoter regions of the 26 BpDof genes. qRT-PCR revealed that the expression of the 26 BpDof genes was differentially regulated by drought stress among roots, stems, and leaves. Most BpDof genes responded to drought stress, and BpDof4, BpDof11, and BpDof17 were significantly up-regulated. Therefore, plants overexpressing these three genes were generated to investigate drought stress tolerance. The BpDof4-, BpDof11-, and BpDof17-overexpressing plants showed promoted reactive oxygen species (ROS) scavenging capabilities and less severe cell damage, suggesting that they conferred enhanced drought tolerance in birch. This study provided an in-depth insight into the structure, evolution, expression, and function of the Dof gene family in plants.
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Affiliation(s)
- Shilin Sun
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China.,The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Bo Wang
- Department of Life Science and Technology, Mudanjiang Normal University, Mudanjiang, Heilongjiang, China
| | - Qi Jiang
- Department of Life Science and Technology, Mudanjiang Normal University, Mudanjiang, Heilongjiang, China
| | - Zhuoran Li
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China.,The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Site Jia
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China.,The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Yucheng Wang
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China.,The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Huiyan Guo
- College of Forestry, Shenyang Agricultural University, Shenyang, Liaoning, China.,The Key Laboratory of Forest Tree Genetics, Breeding and Cultivation of Liaoning Province, Shenyang Agricultural University, Shenyang, Liaoning, China
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Rosnoblet C, Chatelain P, Klinguer A, Bègue H, Winckler P, Pichereaux C, Wendehenne D. The chaperone-like protein Cdc48 regulates ubiquitin-proteasome system in plants. PLANT, CELL & ENVIRONMENT 2021; 44:2636-2655. [PMID: 33908641 DOI: 10.1111/pce.14073] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/23/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
The degradation of misfolded proteins is mainly mediated by the ubiquitin-proteasome system (UPS). UPS can be assisted by the protein Cdc48 but the relationship between UPS and Cdc48 in plants has been poorly investigated. Here, we analysed the regulation of UPS by Cdc48 in tobacco thanks to two independent cell lines overexpressing Cdc48 constitutively and plant leaves overexpressing Cdc48 transiently. In the cell lines, the accumulation of ubiquitinated proteins was affected both quantitatively and qualitatively and the number of proteasomal subunits was modified, while proteolytic activities were unchanged. Similarly, the over-expression of Cdc48 in planta impacted the accumulation of ubiquitinated proteins. A similar process occurred in leaves overexpressing transiently Rpn3, a proteasome subunit. Cdc48 being involved in plant immunity, its regulation of UPS was also investigated in response to cryptogein, an elicitor of immune responses. In the cell lines stably overexpressing Cdc48 and in leaves transiently overexpressing Cdc48 and/or Rpn3, cryptogein triggered a premature cell death while no increase of the proteasomal activity occurred. Overall, this study highlights a role for Cdc48 in ubiquitin homeostasis and confirms its involvement, as well as that of Rpn3, in the processes underlying the hypersensitive response.
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Affiliation(s)
- Claire Rosnoblet
- Agroécologie, AgroSup Dijon, CNRS, INRAE, Université de Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Pauline Chatelain
- Agroécologie, AgroSup Dijon, CNRS, INRAE, Université de Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Agnès Klinguer
- Agroécologie, AgroSup Dijon, CNRS, INRAE, Université de Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Hervé Bègue
- Agroécologie, AgroSup Dijon, CNRS, INRAE, Université de Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
- Laboratory of Parasitology and Mycology, Dijon University Hospital, Dijon, France
| | - Pascale Winckler
- Plateforme DimaCell, PAM UMR A 02.102, Université Bourgogne Franche-Comté, AgroSup Dijon, Dijon, France
| | - Carole Pichereaux
- Fédération de Recherche (FR3450), Agrobiosciences, Interactions et Biodiversité (AIB), CNRS, Toulouse, France
- Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse UPS, CNRS, Toulouse, France
| | - David Wendehenne
- Agroécologie, AgroSup Dijon, CNRS, INRAE, Université de Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
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Tente E, Ereful N, Rodriguez AC, Grant P, O'Sullivan DM, Boyd LA, Gordon A. Reprogramming of the wheat transcriptome in response to infection with Claviceps purpurea, the causal agent of ergot. BMC PLANT BIOLOGY 2021; 21:316. [PMID: 34215204 PMCID: PMC8252325 DOI: 10.1186/s12870-021-03086-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 06/07/2021] [Indexed: 06/02/2023]
Abstract
BACKGROUND Ergot, caused by the fungal pathogen Claviceps purpurea, infects the female flowers of a range of cereal crops, including wheat. To understand the interaction between C. purpurea and hexaploid wheat we undertook an extensive examination of the reprogramming of the wheat transcriptome in response to C. purpurea infection through floral tissues (i.e. the stigma, transmitting and base ovule tissues of the ovary) and over time. RESULTS C. purpurea hyphae were observed to have grown into and down the stigma at 24 h (H) after inoculation. By 48H hyphae had grown through the transmitting tissue into the base, while by 72H hyphae had surrounded the ovule. By 5 days (D) the ovule had been replaced by fungal tissue. Differential gene expression was first observed at 1H in the stigma tissue. Many of the wheat genes differentially transcribed in response to C. purpurea infection were associated with plant hormones and included the ethylene (ET), auxin, cytokinin, gibberellic acid (GA), salicylic acid and jasmonic acid (JA) biosynthetic and signaling pathways. Hormone-associated genes were first detected in the stigma and base tissues at 24H, but not in the transmitting tissue. Genes associated with GA and JA pathways were seen in the stigma at 24H, while JA and ET-associated genes were identified in the base at 24H. In addition, several defence-related genes were differential expressed in response to C. purpurea infection, including antifungal proteins, endocytosis/exocytosis-related proteins, NBS-LRR class proteins, genes involved in programmed cell death, receptor protein kinases and transcription factors. Of particular interest was the identification of differential expression of wheat genes in the base tissue well before the appearance of fungal hyphae, suggesting that a mobile signal, either pathogen or plant-derived, is delivered to the base prior to colonisation. CONCLUSIONS Multiple host hormone biosynthesis and signalling pathways were significantly perturbed from an early stage in the wheat - C. purpurea interaction. Differential gene expression at the base of the ovary, ahead of arrival of the pathogen, indicated the potential presence of a long-distance signal modifying host gene expression.
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Affiliation(s)
- Eleni Tente
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
- Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
| | - Nelzo Ereful
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
- Philippine Genome Center, Plant Physiology Laboratory, Institute of Plant Breeding, University of the Philippines, Los Baños, Laguna, The Philippines
| | | | - Paul Grant
- Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
- Present Address: Microsoft Research, 21 Station Road, Cambridge, CB1 2FB, UK
| | - Donal M O'Sullivan
- School of Agriculture, Policy and Development, University of Reading, Whiteknights, Reading, RG6 6AR, UK
| | - Lesley A Boyd
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK.
| | - Anna Gordon
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
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Monazzah M, Tahmasebi Enferadi S, Rabiei Z, De Nobili M. Proteome Changes in Stem Tissues of Sunflower Lines Inoculated with Culture Filtrate of Sclerotinia sclerotiorum. IRANIAN JOURNAL OF BIOTECHNOLOGY 2021; 19:e2722. [PMID: 34825012 PMCID: PMC8590719 DOI: 10.30498/ijb.2021.223625.2722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Sclerotinia sclerotiorum (Lib.) de Bary cause a deleterious disease on sunflower plants. Oxalic acid is the main pathogenicity factor of S. sclerotiorum. Two dimensional gel electrophoresis and mass spectrometry have been used in several studies to investigate molecular changes that occur in the plants in response to S. sclerotiorum infection. Comparing responses of resistant and susceptible lines upon pathogen infection provided novel information regarding defense mechanisms against this necrotrophic pathogen. OBJECTIVES The present study reports proteome changes of partially resistant and susceptible sunflower lines under pathogen's culture filtrate treatment, resulting in the characterization of up- and down- regulated proteins. MATERIAL AND METHODS Sunflower partially resistant and susceptible lines with two true leaves were exposed to fungus culture filtrate. The stems of treated and untreated plants were sampled at 24, 48 and 72 hours after treatment for two-dimensional electrophoresis. Twenty spots showed more than 1.5-fold change in abundance were subjected to MALDI/TOF-TOF MS for further analysis. RESULTS The identified proteins were categorized into several classes including carbohydrate and energy metabolism (25%), cellular metabolic process (15%), stress response (15%), plant cell wall biogenesis (10%), photosynthesis (10%), protein metabolism (10%), unknown function (10%) and redox homeostasis (5%). CONCLUSIONS Our proteomic investigation demonstrates an increase in the expression of proteins only in partially resistant line, such as proteins involved in carbohydrate metabolism and plant defense responses (malate dehydrogenase and peroxidase), metabolic process (adenosine kinase), regulating cell redox homeostasis (disulfide isomerase) and lignin biosynthetic process (laccase). Moreover, the expression of pyrroline-5-carboxylate reductase, involved in proline biosynthesis, was significantly changed in both sunflower lines in response to pathogen culture filtrate. Proteins which were only up-regulated in the partially resistant lines might have a significant role in mediating the defense against Sclerotinia and could be considered for enhancing resistance against this devastating pathogen.
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Affiliation(s)
- Maryam Monazzah
- Department of Plant Molecular Biotechnology, Institute of Agricultural Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Sattar Tahmasebi Enferadi
- Department of Plant Molecular Biotechnology, Institute of Agricultural Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Zohreh Rabiei
- Department of Plant Molecular Biotechnology, Institute of Agricultural Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Maria De Nobili
- Department of Agriculture and Environmental Sciences, University of Udine, Italy
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Lei X, Tan B, Liu Z, Wu J, Lv J, Gao C. ThCOL2 Improves the Salt Stress Tolerance of Tamarix hispida. FRONTIERS IN PLANT SCIENCE 2021; 12:653791. [PMID: 34079567 PMCID: PMC8166225 DOI: 10.3389/fpls.2021.653791] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 04/09/2021] [Indexed: 05/20/2023]
Abstract
The CONSTANS-LIKE (COL) transcription factor has been reported to play important roles in regulating plant flowering and the response to abiotic stress. To clone and screen COL genes with excellent salt tolerance from the woody halophyte Tamarix hispida, 8 ThCOL genes were identified in this study. The expression patterns of these genes under different abiotic stresses (high salt, osmotic, and heavy metal) and abscisic acid (ABA) treatment were detected using quantitative real-time PCR (qRT-PCR). The expression levels of 8 ThCOL genes changed significantly after exposure to one or more stresses, indicating that these genes were all stress-responsive genes and may be involved in the stress resistance response of T. hispida. In particular, the expression level of ThCOL2 changed significantly at most time points in the roots and leaves of T. hispida under salt stress and after ABA treatments, which may play an important role in the response process of salt stress through a mechanism dependent on the ABA pathway. The recombinant vectors pROKII-ThCOL2 and pFGC5941-ThCOL2 were constructed for the transient transformation of T. hispida, and the transient infection of T. hispida with the pROKII empty vector was used as the control to further verify whether the ThCOL2 gene was involved in the regulation of the salt tolerance response of T. hispida. Overexpression of the ThCOL2 gene in plants under 150 mM NaCl stress increased the ability of transgenic T. hispida cells to remove reactive oxygen species (ROS) by regulating the activity of protective enzymes and promoting a decrease in the accumulation of O2- and H2O2, thereby reducing cell damage or cell death and enhancing salt tolerance. The ThCOL2 gene may be a candidate gene associated with excellent salt tolerance. Furthermore, the expression levels of some genes related to the ABA pathway were analyzed using qRT-PCR. The results showed that the expressions of ThNCED1 and ThNCED4 were significantly higher, and the expressions of ThNCED3, ThZEP, and ThAAO3 were not significantly altered in OE compared with CON under normal conditions. But after 24 h of salt stress, the expressions of all five studied genes all were lower than the normal condition. In the future, the downstream genes directly regulated by the ThCOL2 transcription factor will be searched and identified to analyze the salt tolerance regulatory network of ThCOL2.
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Wen X, Ding Y, Tan Z, Wang J, Zhang D, Wang Y. Identification and characterization of cadmium stress-related LncRNAs from Betula platyphylla. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 299:110601. [PMID: 32900439 DOI: 10.1016/j.plantsci.2020.110601] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
Cadmium (Cd) is one of the most serious global environmental pollutants, which inhibits plant growth and interferes with their physiological processes. However, there have been few studies on the involvement of long noncoding RNAs (lncRNAs) in Cd tolerance. In the present study, we identified the lncRNAs from Betula platyphylla (birch) that respond to Cd stress. Thirty lncRNAs that were differentially expressed under Cd treatment were identified, including 16 upregulated and 14 downregulated lncRNAs. Nine differentially regulated lncRNAs were selected for further characterization. These lncRNAs were transiently overexpressed in birch plants to determine their roles in Cd tolerance. Among them, two lncRNAs conferred Cd tolerance and two induced sensitivity to Cd stress. We further determined the Cd tolerance of four target genes of the lncRNAs involved in Cd tolerance, including l-lactate dehydrogenase A (LDHA),heat shock protein (HSP18.1), yellow stripe-like protein (YSL9), and H/ACA ribonucleoprotein complex subunit 2-like protein (HRCS2L). Among them, HSP18.1 and LDHA showed improved tolerance to Cd stress, whereas the other two genes did not appear to be involved in Cd tolerance. These results suggested that lncRNAs can up- or downregulate their target genes to improve Cd tolerance. These results increase our understanding of lncRNA-mediated Cd tolerance.
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Affiliation(s)
- Xuejing Wen
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China.
| | - Yu Ding
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Zilong Tan
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Jingxin Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040, China.
| | - Daoyuan Zhang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China.
| | - Yucheng Wang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China.
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Wang Y, Liu Z, Wang P, Jiang B, Lei X, Wu J, Dong W, Gao C. A 2-Cys peroxiredoxin gene from Tamarix hispida improved salt stress tolerance in plants. BMC PLANT BIOLOGY 2020; 20:360. [PMID: 32731892 PMCID: PMC7393912 DOI: 10.1186/s12870-020-02562-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 07/21/2020] [Indexed: 05/09/2023]
Abstract
BACKGROUND Peroxiredoxins (Prxs) are a large family of antioxidant enzymes that respond to biotic and abiotic stress by decomposing reactive oxygen species (ROS). In this study, the stress tolerance function of the Th2CysPrx gene was further analysed. It lays a foundation for further studies on the salt tolerance molecular mechanism of T. hispida and improved salt tolerance via transgenic plants. RESULTS In this study, the stress tolerance function of the Th2CysPrx gene was further analysed. The results of transgenic tobacco showed higher seed germination rates, root lengths, and fresh weight under salt stress than wild-type tobacco. Simultaneously, physiological indicators of transgenic tobacco and T. hispida showed that Th2CysPrx improved the activities of antioxidant enzymes and enhanced ROS removal ability to decrease cellular damage under salt stress. Moreover, Th2CysPrx improved the expression levels of four antioxidant genes (ThGSTZ1, ThGPX, ThSOD and ThPOD). CONCLUSIONS Overall, these results suggested that Th2CysPrx enhanced the salt tolerance of the transgenic plants. These findings lay a foundation for further studies on the salt tolerance molecular mechanism of T. hispida and improved salt tolerance via transgenic plants.
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Affiliation(s)
- Yuanyuan Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040 China
| | - Zhongyuan Liu
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040 China
| | - Peilong Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040 China
| | - Bo Jiang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040 China
| | - Xiaojin Lei
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040 China
| | - Jing Wu
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040 China
| | - Wenfang Dong
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040 China
| | - Caiqiu Gao
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040 China
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Pereksta D, King D, Saki F, Maroli A, Leonard E, Suseela V, May S, Castellanos Uribe M, Tharayil N, Van Hoewyk D. Proteasome Inhibition in Brassica napus Roots Increases Amino Acid Synthesis to Offset Reduced Proteolysis. PLANT & CELL PHYSIOLOGY 2020; 61:1028-1040. [PMID: 32311031 DOI: 10.1093/pcp/pcaa047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 04/10/2020] [Indexed: 06/11/2023]
Abstract
Cellular homeostasis is maintained by the proteasomal degradation of regulatory and misfolded proteins, which sustains the amino acid pool. Although proteasomes alleviate stress by removing damaged proteins, mounting evidence indicates that severe stress caused by salt, metal(oids), and some pathogens can impair the proteasome. However, the consequences of proteasome inhibition in plants are not well understood and even less is known about how its malfunctioning alters metabolic activities. Lethality causes by proteasome inhibition in non-photosynthetic organisms stem from amino acid depletion, and we hypothesized that plants respond to proteasome inhibition by increasing amino acid biosynthesis. To address these questions, the short-term effects of proteasome inhibition were monitored for 3, 8 and 48 h in the roots of Brassica napus treated with the proteasome inhibitor MG132. Proteasome inhibition did not affect the pool of free amino acids after 48 h, which was attributed to elevated de novo amino acid synthesis; these observations coincided with increased levels of sulfite reductase and nitrate reductase activities at earlier time points. However, elevated amino acid synthesis failed to fully restore protein synthesis. In addition, transcriptome analysis points to perturbed abscisic acid signaling and decreased sugar metabolism after 8 h of proteasome inhibition. Proteasome inhibition increased the levels of alternative oxidase but decreased aconitase activity, most sugars and tricarboxylic acid metabolites in root tissue after 48 h. These metabolic responses occurred before we observed an accumulation of reactive oxygen species. We discuss how the metabolic response to proteasome inhibition and abiotic stress partially overlap in plants.
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Affiliation(s)
- Dan Pereksta
- Biology Department, Coastal Carolina University, 107 Chanticleer Drive, Conway, SC 29526, USA
| | - Dillon King
- Biology Department, Coastal Carolina University, 107 Chanticleer Drive, Conway, SC 29526, USA
- Toxicology and Environmental Health. Duke University. 225 B Wing, Levine Science Research Center Durham, North Carolina 27708, USA
| | - Fahmida Saki
- Biology Department, Coastal Carolina University, 107 Chanticleer Drive, Conway, SC 29526, USA
- National Technical Institute for the Deaf 52 Lomb Memorial Dr, Rochester, NY 14623, USA
| | - Amith Maroli
- Department of Agriculture and Environmental Sciences, Clemson University, 105 Collins Street, Clemson, SC 29634, USA
| | - Elizabeth Leonard
- Department of Agriculture and Environmental Sciences, Clemson University, 105 Collins Street, Clemson, SC 29634, USA
| | - Vidya Suseela
- Department of Agriculture and Environmental Sciences, Clemson University, 105 Collins Street, Clemson, SC 29634, USA
| | - Sean May
- School of Biosciences, University of Nottingham, Loughborough LE12 5RD, UK
| | | | - Nishanth Tharayil
- Department of Agriculture and Environmental Sciences, Clemson University, 105 Collins Street, Clemson, SC 29634, USA
| | - Doug Van Hoewyk
- Biology Department, Coastal Carolina University, 107 Chanticleer Drive, Conway, SC 29526, USA
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Li C, Tao RF, Li Y, Duan MH, Xu JH. Transcriptome analysis of the thermosensitive genic male-sterile line provides new insights into fertility alteration in rice (Oryza sativa). Genomics 2020; 112:2119-2129. [DOI: 10.1016/j.ygeno.2019.12.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 11/19/2019] [Accepted: 12/09/2019] [Indexed: 12/13/2022]
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Zhao K, Zhang D, Lv K, Zhang X, Cheng Z, Li R, Zhou B, Jiang T. Functional characterization of poplar WRKY75 in salt and osmotic tolerance. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 289:110259. [PMID: 31623781 DOI: 10.1016/j.plantsci.2019.110259] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/27/2019] [Accepted: 09/07/2019] [Indexed: 05/06/2023]
Abstract
The WRKY transcription factor family is one of the most important families in plants, playing a significant role in plant growth and development, as well as in stress responses. However, functional studies on the family in response to abiotic stresses are limited in poplar. In the present study, we cloned a WRKY transcription factor gene PagWRKY75, which was down-regulated during early stages of salt and osmotic stresses. The PagWRKY75 protein belongs to the WRKY IIc subfamily. It is located in the nucleus and can bind to the W box. We obtained transgenic poplar lines with PagWRKY75 overexpression or inhibited expression by RNA interference. Stress treatment experiments indicated that the transgenic poplar lines overexpressing PagWRKY75 were more sensitive to salt and osmotic stresses, compared to wild type. The transgenic lines with PagWRKY75 inhibition displayed opposite effects. Furthermore, our results showed that PagWRKY75 can reduce the ability of reactive oxygen species scavenging and the accumulation of proline under stresses, and positively regulate the water loss rate of leaves. These results indicate that the transcription factor PagWRKY75 can negatively regulate salt and osmotic tolerance by modulating various physiological processes.
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Affiliation(s)
- Kai Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Dawei Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Kaiwen Lv
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Xuemei Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Zihan Cheng
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Renhua Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Boru Zhou
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Tingbo Jiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China.
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Xue M, Guo T, Ren M, Wang Z, Tang K, Zhang W, Wang M. Constitutive expression of chloroplast glycerol-3-phosphate acyltransferase from Ammopiptanthus mongolicus enhances unsaturation of chloroplast lipids and tolerance to chilling, freezing and oxidative stress in transgenic Arabidopsis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 143:375-387. [PMID: 31542639 DOI: 10.1016/j.plaphy.2019.07.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 07/19/2019] [Accepted: 07/19/2019] [Indexed: 05/02/2023]
Abstract
Chloroplast glycerol-3-phosphate acyltransferase (GPAT) is the first key enzyme determining the unsaturation of phosphatidylglycerol (PG) in thylakoid membranes and is involved in the tolerance of plants to chilling, heat and high salinity. However, whether the GPAT affects plant tolerance to other stressors has been scarcely reported. Ammopiptanthus mongolicus is the only evergreen broadleaf shrub growing in the central Asian desert, and it has a high tolerance to harsh environments, especially extreme cold. This study aimed to characterize the physiological function of AmGPAT from A. mongolicus. The transcription of AmGPAT was markedly induced by cold and drought but differentially suppressed by heat and high salinity in the laboratory-cultured seedlings. The gene also had the highest transcription levels in the leaves of shrubs naturally growing in the wild during the late autumn and winter months throughout the year. Moreover, AmGPAT was most abundantly expressed in leaves and immature pods rather than other organs of the shrubs. Constitutive expression of AmGPAT in Arabidopsis increased the levels of cis-unsaturated fatty acids, especially that of linolenic acid (18:3), mainly in PG but also in other chloroplast lipids in transgenic lines. More importantly, the transgene significantly increased the tolerance of the transgenics not only to chilling but also to freezing and oxidative stress at both the cellular and whole-plant levels. In contrast, this gene reduced heat tolerance of the transgenic plants. This study improves the current understanding of chloroplast GPAT in plant tolerance against abiotic stressors through regulating the unsaturation of chloroplast lipids, mainly that of PG.
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Affiliation(s)
- Min Xue
- College of Life Sciences, Inner Mongolia Agricultural University, No. 306 Zhaowuda Street, Hohhot, 010018, China.
| | - Ting Guo
- College of Life Sciences, Inner Mongolia Agricultural University, No. 306 Zhaowuda Street, Hohhot, 010018, China.
| | - Meiyan Ren
- College of Life Sciences, Inner Mongolia Agricultural University, No. 306 Zhaowuda Street, Hohhot, 010018, China.
| | - Zhilin Wang
- College of Life Sciences, Inner Mongolia Agricultural University, No. 306 Zhaowuda Street, Hohhot, 010018, China.
| | - Kuangang Tang
- College of Life Sciences, Inner Mongolia Agricultural University, No. 306 Zhaowuda Street, Hohhot, 010018, China.
| | - Wenjun Zhang
- College of Life Sciences, Inner Mongolia Agricultural University, No. 306 Zhaowuda Street, Hohhot, 010018, China.
| | - Maoyan Wang
- College of Life Sciences, Inner Mongolia Agricultural University, No. 306 Zhaowuda Street, Hohhot, 010018, China.
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Goto F, Enomoto Y, Shoji K, Shimada H, Yoshihara T. Copper treatment of peach leaves causes lesion formation similar to the biotic stress response. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2019; 36:135-142. [PMID: 31768115 PMCID: PMC6854336 DOI: 10.5511/plantbiotechnology.19.0531b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 05/31/2019] [Indexed: 06/01/2023]
Abstract
Peach (Prunus persica (L.) Batsch) leaves are sensitive to copper (Cu) exposure. The symptoms of Cu exposure are similar to those of bacterial spot disease; however, the mechanism underlying lesion formation caused by Cu exposure is not clear. Here, we investigated whether lesion formation caused by Cu exposure was related to the mechanism underlying plant resistance to microbial pathogens. When Cu was applied to the centre of a pinhole on peach leaves, a two-step process was observed. A pale green section in the shape of a doughnut, located far from a Cu treatment point, first appeared on a leaf treated with 2 mM CuSO4. Next, a yellow-white section gradually spread from the Cu treatment point to the pale green section. Finally, a gap was formed in the middle of the pale green section. The inner part of the pale green section contained 96% of the Cu applied, indicating that Cu is retained in the lesion area. Real-time PCR analysis of the expression of genes encoding pathogenesis-related proteins and enzymes involved in phytoalexin synthesis revealed that three genes (encoding chitinase, pathogenesis-related protein 4, and β-1,3-glucanase-3) of the eight tested were upregulated by Cu treatment. Furthermore, treatment with caspase-1 inhibitors reduced lesion formation. These results show that Cu treatment of peach leaves causes cell death similar to that occurring during the biotic stress response.
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Affiliation(s)
- Fumiyuki Goto
- Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko-shi, Chiba 270-1194, Japan
| | - Yusuke Enomoto
- Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko-shi, Chiba 270-1194, Japan
- Department of Biological Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan
| | - Kazuhiro Shoji
- Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko-shi, Chiba 270-1194, Japan
| | - Hiroaki Shimada
- Department of Biological Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan
| | - Toshihiro Yoshihara
- Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko-shi, Chiba 270-1194, Japan
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35
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He L, Bian J, Xu J, Yang K. Novel Maize NAC Transcriptional Repressor ZmNAC071 Confers Enhanced Sensitivity to ABA and Osmotic Stress by Downregulating Stress-Responsive Genes in Transgenic Arabidopsis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8905-8918. [PMID: 31380641 DOI: 10.1021/acs.jafc.9b02331] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
NAC TFs play crucial roles in response to abiotic stresses in plants. Here, ZmNAC071 was identified as a nuclear located transcriptional repressor. Overexpression of ZmNAC071 in Arabidopsis enhanced sensitivity of transgenic plants to ABA and osmotic stress. The expression levels of SODs, PODs, P5CSs, and AtMYB61 were inhibited by ZmNAC071, which results in reduced ROS scavenging and proline content, increased ROS level, and water loss. Besides, the expression levels of some ABA or abiotic stress-related genes, like ABIs, RD29A, DREBs, and LEAs were also significantly inhibited by ZmNAC071. Yeast one-hybrid assay demonstrated that ZmNAC071 specifically bound to the cis-acting elements containing CGT[G/A] core sequences in the promoter of stress-related genes, suggesting that ZmNAC071 may participate in the regulation of transcription of these genes through recognizing the core sequences CGT[G/A]. These results will facilitate further studies concerning the cis-elements and downstream genes targeted by ZmNAC071 in maize.
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Affiliation(s)
- Lin He
- Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province , Heilongjiang Bayi Agricultural University , 5 Xinfeng Road , 163319 Daqing , China
| | - Jing Bian
- Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province , Heilongjiang Bayi Agricultural University , 5 Xinfeng Road , 163319 Daqing , China
| | - Jingyu Xu
- Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province , Heilongjiang Bayi Agricultural University , 5 Xinfeng Road , 163319 Daqing , China
| | - Kejun Yang
- Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province , Heilongjiang Bayi Agricultural University , 5 Xinfeng Road , 163319 Daqing , China
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36
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Ueno N, Kashiwagi M, Kanekatsu M, Marubashi W, Yamada T. Accumulation of protein aggregates induces autolytic programmed cell death in hybrid tobacco cells expressing hybrid lethality. Sci Rep 2019; 9:10223. [PMID: 31308420 PMCID: PMC6629611 DOI: 10.1038/s41598-019-46619-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 07/02/2019] [Indexed: 12/03/2022] Open
Abstract
Hybrid cells of Nicotiana suaveolens x N. tabacum grow normally at 36 °C, but immediately express lethality due to probable autoimmune response when transferred from 36 to 28 °C. Our recent study showed that the temperature-sensitive lethality of these hybrid cells occurs through autolytic programmed cell death (PCD). However, what happens in hybrid cells following the induction of autoimmune response to autolytic PCD is unclear. We hypothesized that accumulation of protein aggregates in hybrid cells induces autolytic PCD and examined detergent-insoluble protein (protein aggregates) isolated from hybrid cells expressing lethality. The amount of insoluble proteins increased in hybrid cells. Sodium 4-phenylbutyrate, a chemical chaperone, inhibited both the accumulation of insoluble proteins and irreversible progression of cell death. In contrast, E-64, a cysteine protease inhibitor, accelerated both the accumulation of insoluble proteins and cell death. Moreover, proteome analysis revealed that proteasome-component proteins were accumulated specifically in cells treated with E-64, and proteasome activity of hybrid cells decreased after induction of lethality. These findings demonstrate that accumulation of protein aggregates, including proteasome subunits, eventually cause autolytic PCD in hybrid cells. This suggests a novel process inducing plant PCD by loss of protein homeostasis and provides clues to future approaches for elucidating the whole process.
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Affiliation(s)
- Naoya Ueno
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Megumi Kashiwagi
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Motoki Kanekatsu
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Wataru Marubashi
- Faculty of Agricultural Science, Meiji University, Kanagawa, Japan
| | - Tetsuya Yamada
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo, Japan.
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Wen X, Wang J, Zhang D, Wang Y. A Gene Regulatory Network Controlled by BpERF2 and BpMYB102 in Birch under Drought Conditions. Int J Mol Sci 2019; 20:ijms20123071. [PMID: 31234595 PMCID: PMC6627136 DOI: 10.3390/ijms20123071] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/18/2019] [Accepted: 06/21/2019] [Indexed: 12/14/2022] Open
Abstract
Gene expression profiles are powerful tools for investigating mechanisms of plant stress tolerance. Betula platyphylla (birch) is a widely distributed tree, but its drought-tolerance mechanism has been little studied. Using RNA-Seq, we identified 2917 birch genes involved in its response to drought stress. These drought-responsive genes include the late embryogenesis abundant (LEA) family, heat shock protein (HSP) family, water shortage-related and ROS-scavenging proteins, and many transcription factors (TFs). Among the drought-induced TFs, the ethylene responsive factor (ERF) and myeloblastosis oncogene (MYB) families were the most abundant. BpERF2 and BpMYB102, which were strongly induced by drought and had high transcription levels, were selected to study their regulatory networks. BpERF2 and BpMYB102 both played roles in enhancing drought tolerance in birch. Chromatin immunoprecipitation combined with qRT-PCR indicated that BpERF2 regulated genes such as those in the LEA and HSP families, while BpMYB102 regulated genes such as Pathogenesis-related Protein 1 (PRP1) and 4-Coumarate:Coenzyme A Ligase 10 (4CL10). Multiple genes were regulated by both BpERF2 and BpMYB102. We further characterized the function of some of these genes, and the genes that encode Root Primordium Defective 1 (RPD1), PRP1, 4CL10, LEA1, SOD5, and HSPs were found to be involved in drought tolerance. Therefore, our results suggest that BpERF2 and BpMYB102 serve as transcription factors that regulate a series of drought-tolerance genes in B. platyphylla to improve drought tolerance.
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Affiliation(s)
- Xuejing Wen
- CAS Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Urumqi 830011, China.
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan 838008, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Jingxin Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China.
| | - Daoyuan Zhang
- CAS Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Urumqi 830011, China.
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan 838008, China.
| | - Yucheng Wang
- CAS Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Urumqi 830011, China.
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan 838008, China.
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Islam MM, Ye W, Matsushima D, Rhaman MS, Munemasa S, Okuma E, Nakamura Y, Biswas MS, Mano J, Murata Y. Reactive Carbonyl Species Function as Signal Mediators Downstream of H2O2 Production and Regulate [Ca2+]cyt Elevation in ABA Signal Pathway in Arabidopsis Guard Cells. PLANT & CELL PHYSIOLOGY 2019; 60:1146-1159. [PMID: 30796836 DOI: 10.1093/pcp/pcz031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Accepted: 02/09/2019] [Indexed: 05/06/2023]
Abstract
We have demonstrated that reactive carbonyl species (RCS) function as an intermediate downstream of hydrogen peroxide (H2O2) production in abscisic acid (ABA) signaling for stomatal closure in guard cells using transgenic tobacco plants overexpressing alkenal reductase. We investigated the conversion of the RCS production into downstream signaling events in the guard cells. Both ABA and H2O2 induced production of the RCS, such as acrolein and 4-hydroxy-(E)-2-nonenal (HNE), in epidermal tissues of wild-type Arabidopsis thaliana plants. Application of the RCS scavengers, carnosine and pyridoxamine, did not affect the ABA-induced H2O2 production but inhibited the ABA- and H2O2-induced stomatal closure. Both acrolein and HNE induced stomatal closure in a plasma membrane NAD(P)H oxidase mutant atrbohD atrbohF as well as in the wild type, but not in a calcium-dependent kinase mutant cpk6. Acrolein activated plasma membrane Ca2+-permeable cation channels, triggered cytosolic free Ca2+ concentration ([Ca2+]cyt) elevation, and induced stomatal closure accompanied by depletion of glutathione in the guard cells. These results suggest that RCS production is a signaling event between the ROS production and [Ca2+]cyt elevation during guard cell ABA signaling.
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Affiliation(s)
- Md Moshiul Islam
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, Japan
- Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Wenxiu Ye
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, Japan
| | - Daiki Matsushima
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, Japan
| | - Mohammad Saidur Rhaman
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, Japan
| | - Shintaro Munemasa
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, Japan
| | - Eiji Okuma
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, Japan
| | - Yoshimasa Nakamura
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, Japan
| | - Md Sanaullah Biswas
- The United Graduate School of Agriculture, Tottori University, Koyama-cho Minami 4-101, Tottori, Japan
- Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Jun'ichi Mano
- The United Graduate School of Agriculture, Tottori University, Koyama-cho Minami 4-101, Tottori, Japan
- Science Research Center, Yamaguchi University, Yoshida 1677-1, Yamaguchi, Japan
| | - Yoshiyuki Murata
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, Japan
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Wang L, Lin Z, Triviño M, Nowack MK, Franklin-Tong VE, Bosch M. Self-incompatibility in Papaver pollen: programmed cell death in an acidic environment. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:2113-2123. [PMID: 30481323 PMCID: PMC7116307 DOI: 10.1093/jxb/ery406] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/07/2018] [Indexed: 05/18/2023]
Abstract
Self-incompatibility (SI) is a genetically controlled mechanism that prevents self-fertilization and thus encourages outbreeding and genetic diversity. During pollination, most SI systems utilize cell-cell recognition to reject incompatible pollen. Mechanistically, one of the best-studied SI systems is that of Papaver rhoeas (poppy), which involves the interaction between the two S-determinants, a stigma-expressed secreted protein (PrsS) and a pollen-expressed plasma membrane-localized protein (PrpS). This interaction is the critical step in determining acceptance of compatible pollen or rejection of incompatible pollen. Cognate PrpS-PrsS interaction triggers a signalling network causing rapid growth arrest and eventually programmed cell death (PCD) in incompatible pollen. In this review, we provide an overview of recent advances in our understanding of the major components involved in the SI-induced PCD (SI-PCD). In particular, we focus on the importance of SI-induced intracellular acidification and consequences for protein function, and the regulation of soluble inorganic pyrophosphatase (Pr-p26.1) activity by post-translational modification. We also discuss attempts to identify protease(s) involved in the SI-PCD process. Finally, we outline future opportunities made possible by the functional transfer of the P. rhoeas SI system to Arabidopsis.
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Affiliation(s)
- Ludi Wang
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Plas Gogerddan, Aberystwyth, UK
| | - Zongcheng Lin
- Department of Plant Biotechnology and Genetics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Marina Triviño
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Plas Gogerddan, Aberystwyth, UK
- Department of Plant Biotechnology and Genetics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Moritz K Nowack
- Department of Plant Biotechnology and Genetics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Vernonica E Franklin-Tong
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Maurice Bosch
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Plas Gogerddan, Aberystwyth, UK
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BplMYB46 from Betula platyphylla Can Form Homodimers and Heterodimers and Is Involved in Salt and Osmotic Stresses. Int J Mol Sci 2019; 20:ijms20051171. [PMID: 30866467 PMCID: PMC6429157 DOI: 10.3390/ijms20051171] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/26/2019] [Accepted: 03/04/2019] [Indexed: 12/21/2022] Open
Abstract
MYB proteins play important roles in the regulation of plant growth, development, and stress responses. Overexpression of BplMYB46 from Betula platyphylla improved plant salt and osmotic tolerances. In the present study, the interaction of eight avian myeloblastosis viral oncogene homolog (MYB) transcription factors with BplMYB46 was investigated using the yeast two-hybrid system, which showed that BplMYB46 could form homodimers and heterodimers with BplMYB6, BplMYB8, BplMYB11, BplMYB12, and BplMYB13. Relative beta-glucuronidase activity and chromatin immunoprecipitation assays showed that the interaction between BplMYB46 and the five MYBs increased the binding of BplMYB46 to the MYBCORE motif. A subcellular localization study showed that these MYBs were all located in the nucleus. Real-time fluorescence quantitative PCR results indicated that the expressions of BplMYB46 and the five MYB genes could be induced by salt and osmotic stress, and the BplMYB46 and BplMYB13 exhibited the most similar expression patterns. BplMYB46 and BplMYB13 co-overexpression in tobacco using transient transformation technology improved tobacco’s tolerance to salt and osmotic stresses compared with overexpressing BplMYB13 or BplMYB46 alone. Taken together, these results demonstrated that BplMYB46 could interact with five other MYBs to form heterodimers that activate the transcription of target genes via an enhanced binding ability to the MYBCORE motif to mediate reactive oxygen species scavenging in response to salt and osmotic stresses.
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Filippi A, Zancani M, Petrussa E, Braidot E. Caspase-3-like activity and proteasome degradation in grapevine suspension cell cultures undergoing silver-induced programmed cell death. JOURNAL OF PLANT PHYSIOLOGY 2019; 233:42-51. [PMID: 30580058 DOI: 10.1016/j.jplph.2018.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 12/06/2018] [Accepted: 12/06/2018] [Indexed: 06/09/2023]
Abstract
Toxic metal contamination is one of the major environmental concerns of the recent decade, due to the large application of metals in industrial, healthcare and commercial products, even in the form of nanostructures and nanomaterials. Nevertheless, the effects of silver (Ag+) on plants have not yet thoroughly elucidated. Therefore, suspension cell cultures of grapevine were used as a model for investigating silver toxicity. To do this, oxidative stress and programmed cell death (PCD), evaluated as reactive oxygen species production, caspase-3-like activity and ubiquitin-proteasome system, were investigated. As a result, the highest concentration (10 μM) of Ag+ caused a rapid (within 24 h) induction of PCD (approx. 80%), accompanied by generation of reactive oxygen species and activation of caspase-3-like activity. In the presence of specific inhibitor of this enzyme, a partial recovery of cell viability and a strong inhibition of caspase-3-like activity was observed. In addition, silver-induced PCD was accompanied either by increase of poly-ubiquitin conjugated proteins and degradation of subunit PBA1 of the proteasome 20S core, similarly to what found for metal-induced neurotoxicity in animals. The present study shows that silver could induce PCD in grapevine suspension cell cultures, mediated by caspase-3-like activity and oxidative stress. These effects were associated to accumulation of poly-ubiquitin conjugated proteins, suggesting the impairment of ubiquitin-proteasome complex, confirmed by the decrease of the PBA1 subunit. These findings indicate that animal and plant cells could share a common pathway in response to toxic metal, which involves PCD and disassembling of proteasome complex.
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Zhao Y, Liu M, He L, Li X, Wang F, Yan B, Wei J, Zhao C, Li Z, Xu J. A cytosolic NAD +-dependent GPDH from maize (ZmGPDH1) is involved in conferring salt and osmotic stress tolerance. BMC PLANT BIOLOGY 2019; 19:16. [PMID: 30626322 PMCID: PMC6327487 DOI: 10.1186/s12870-018-1597-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 12/10/2018] [Indexed: 05/07/2023]
Abstract
BACKGROUND Plant glycerol-3-phosphate dehydrogenase (GPDH) catalyzes the reduction of dihydroxyacetone phosphate (DHAP) to produce glycerol-3-phosphate (G-3-P), and plays a key role in glycerolipid metabolism as well as stress responses. RESULTS In this study, we report the cloning, enzymatic and physiological characterization of a cytosolic NAD+-dependent GPDH from maize. The prokaryotic expression of ZmGPDH1 in E.coli showed that the enzyme encoded by ZmGPDH1 was capable of catalyzing the reduction of DHAP in the presence of NADH. The functional complementation analysis revealed that ZmGPDH1 was able to restore the production of glycerol-3-phosphate and glycerol in AtGPDHc-deficient mutants. Furthermore, overexpression of ZmGPDH1 remarkably enhanced the tolerance of Arabidopsis to salinity/osmotic stress by enhancing the glycerol production, the antioxidant enzymes activities (SOD, CAT, APX) and by maintaining the cellular redox homeostasis (NADH/NAD+, ASA/DHA, GSH/GSSG). ZmGPDH1 OE Arabidopsis plants also exhibited reduced leaf water loss and stomatal aperture under salt and osmotic stresses. Quantitative real-time RT-PCR analyses revealed that overexpression of ZmGPDH1 promoted the transcripts accumulation of genes involved in cellular redox homeostasis and ROS-scavenging system. CONCLUSIONS Together, these data suggested that ZmGPDH1 is involved in conferring salinity and osmotic tolerance in Arabidopsis through modulation of glycerol synthesis, stomatal closure, cellular redox and ROS homeostasis.
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Affiliation(s)
- Ying Zhao
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Meng Liu
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Lin He
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Xin Li
- Key Lab of Maize Genetics and Breeding, Heilongjiang Academy of Agricultural Sciences, Harbin, 150000 China
| | - Feng Wang
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Bowei Yan
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Jinpeng Wei
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Changjiang Zhao
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Zuotong Li
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Jingyu Xu
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
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Song GC, Ryu CM. Evidence for Volatile Memory in Plants: Boosting Defence Priming through the Recurrent Application of Plant Volatiles. Mol Cells 2018; 41:724-732. [PMID: 29991670 PMCID: PMC6125420 DOI: 10.14348/molcells.2018.0104] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 04/16/2018] [Accepted: 05/03/2018] [Indexed: 12/12/2022] Open
Abstract
Plant defence responses to various biotic stresses via systemic acquired resistance (SAR) are induced by avirulent pathogens and chemical compounds, including certain plant hormones in volatile form, such as methyl salicylate and methyl jasmonate. SAR refers to the observation that, when a local part of a plant is exposed to elicitors, the entire plant exhibits a resistance response. In the natural environment, plants are continuously exposed to avirulent pathogens that induce SAR and volatile emissions affecting neighbouring plants as well as the plant itself. However, the underlying mechanism has not been intensively studied. In this study, we evaluated whether plants "memorise" the previous activation of plant immunity when exposed repeatedly to plant defensive volatiles such as methyl salicylate and methyl jasmonate. We hypothesised that stronger SAR responses would occur in plants treated with repeated applications of the volatile plant defence compound MeSA than in those exposed to a single or no treatment. Nicotiana benthamiana seedlings subjected to repeated applications of MeSA exhibited greater protection against Pseudomonas syringae pv. tabaci and Pectobacterium carotovorum subsp. carotovorum than the control. The increase in SAR capacity in response to repeated MeSA treatment was confirmed by analysing the defence priming of the expression of N. benthamiana Pathogenesis-Related 1a (NbPR1a) and NbPR2 by quantitative reverse-transcription PCR compared with the control. We propose the concept of plant memory of plant defence volatiles and suggest that SAR is strengthened by the repeated perception of volatile compounds in plants.
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Affiliation(s)
- Geun Cheol Song
- Molecular Phytobacteriology Laboratory, KRIBB, Daejeon 34141,
Korea
| | - Choong-Min Ryu
- Molecular Phytobacteriology Laboratory, KRIBB, Daejeon 34141,
Korea
- Biosystems and Bioengineering Program, University of Science and Technology (UST), Daejeon 34113,
Korea
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Ma H, Xiang G, Li Z, Wang Y, Dou M, Su L, Yin X, Liu R, Wang Y, Xu Y. Grapevine VpPR10.1 functions in resistance to Plasmopara viticola through triggering a cell death-like defence response by interacting with VpVDAC3. PLANT BIOTECHNOLOGY JOURNAL 2018; 16:1488-1501. [PMID: 29377445 PMCID: PMC6041444 DOI: 10.1111/pbi.12891] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 01/10/2018] [Accepted: 01/22/2018] [Indexed: 05/04/2023]
Abstract
As one of the most serious diseases in grape, downy mildew caused by Plasmopara viticola is a worldwide grape disease. Much effort has been focused on improving susceptible grapevine resistance, and wild resistant grapevine species are important for germplasm improvement of commercial cultivars. Using yeast two-hybrid screen followed by a series of immunoprecipitation experiments, we identified voltage-dependent anion channel 3 (VDAC3) protein from Vitis piasezkii 'Liuba-8' as an interacting partner of VpPR10.1 cloned from Vitis pseudoreticulata 'Baihe-35-1', which is an important germplasm for its resistance to a range of pathogens. Co-expression of VpPR10.1/VpVDAC3 induced cell death in Nicotiana benthamiana, which accompanied by ROS accumulation. VpPR10.1 transgenic grapevine line showed resistance to P. viticola. We conclude that the VpPR10.1/VpVDAC3 complex is responsible for cell death-mediated defence response to P. viticola in grapevine.
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Affiliation(s)
- Hui Ma
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest ChinaMinistry of AgricultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Gaoqing Xiang
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest ChinaMinistry of AgricultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Zhiqian Li
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest ChinaMinistry of AgricultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Yuting Wang
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest ChinaMinistry of AgricultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Mengru Dou
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest ChinaMinistry of AgricultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Li Su
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest ChinaMinistry of AgricultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Xiao Yin
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest ChinaMinistry of AgricultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Ruiqi Liu
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest ChinaMinistry of AgricultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Yuejin Wang
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest ChinaMinistry of AgricultureNorthwest A&F UniversityYanglingShaanxiChina
| | - Yan Xu
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of HorticultureNorthwest A&F UniversityYanglingShaanxiChina
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest ChinaMinistry of AgricultureNorthwest A&F UniversityYanglingShaanxiChina
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Cai Y, Yu J, Ge Y, Mironov A, Gallois P. Two proteases with caspase-3-like activity, cathepsin B and proteasome, antagonistically control ER-stress-induced programmed cell death in Arabidopsis. THE NEW PHYTOLOGIST 2018; 218:1143-1155. [PMID: 28675441 PMCID: PMC5947621 DOI: 10.1111/nph.14676] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 05/24/2017] [Indexed: 05/08/2023]
Abstract
Programmed cell death (PCD) induced by endoplasmic reticulum (ER) stress is implicated in various plant physiological processes, yet its mechanism is still elusive. An activation of caspase-3-like enzymatic activity was clearly demonstrated but the role of the two known plant proteases with caspase-3-like activity, cathepsin B and proteasome subunit PBA1, remains to be established. Both genetic downregulation and chemical inhibition were used to investigate the function of cathepsin B and PBA1 in ER-stress-induced PCD (ERSID). Transcript level and activity labelling of cathepsin B were used to assess activation. To study tonoplast rupture, a plant PCD feature, both confocal and electronic microscopies were used. Cathepsin B downregulation reduced reactive oxygen species (ROS) accumulation and ERSID without affecting the induction of the unfolded protein response (UPR), but downregulation of PBA1 increased UPR and ERSID. Tonoplast rupture was not altered in the cathepsin B mutant and cathepsin B activation was independent of vacuolar processing enzyme (VPE). VPE activity was independent of cathepsin B. ERSID is regulated positively by cathepsin B and negatively by PBA1, revealing a complex picture behind caspase-3-like activity in plants. Cathepsin B may execute its function after tonoplast rupture and works in parallel with VPE.
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Affiliation(s)
- Yao‐Min Cai
- School of Biological SciencesFaculty of Biology, Medicine and HealthUniversity of ManchesterMichael Smith Building, Oxford RoadManchesterM13 9PTUK
| | - Jia Yu
- School of Biological SciencesFaculty of Biology, Medicine and HealthUniversity of ManchesterMichael Smith Building, Oxford RoadManchesterM13 9PTUK
| | - Yuan Ge
- College of Marine Life ScienceOcean University of ChinaNo. 5 Yushan RoadQingdao266003China
| | - Aleksandr Mironov
- EM Core FacilitySchool of Biological SciencesFaculty of Biology, Medicine and HealthUniversity of ManchesterMichael Smith Building, Oxford RoadManchesterM13 9PTUK
| | - Patrick Gallois
- School of Biological SciencesFaculty of Biology, Medicine and HealthUniversity of ManchesterMichael Smith Building, Oxford RoadManchesterM13 9PTUK
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Xu H, Shi X, He L, Guo Y, Zang D, Li H, Zhang W, Wang Y. Arabidopsis thaliana Trihelix Transcription Factor AST1 Mediates Salt and Osmotic Stress Tolerance by Binding to a Novel AGAG-Box and Some GT Motifs. PLANT & CELL PHYSIOLOGY 2018; 59:946-965. [PMID: 29420810 DOI: 10.1093/pcp/pcy032] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 02/02/2018] [Indexed: 05/15/2023]
Abstract
Trihelix transcription factors are characterized by containing a conserved trihelix (helix-loop-helix-loop-helix) domain that binds to GT elements required for light response, and they play roles in light stress and in abiotic stress responses. However, only a few of them have been functionally characterized. In the present study, we characterized the function of AST1 (Arabidopsis SIP1 clade Trihelix1) in response to salt and osmotic stress. AST1 shows transcriptional activation activity, and its expression is induced by osmotic and salt stress. A conserved sequence highly present in the promoters of genes regulated by AST1 was identified, which was bound by AST1, and termed the AGAG-box with the sequence [A/G][G/A][A/T]GAGAG. Additionally, AST1 also binds to some GT motifs including the sequence of GGTAATT, TACAGT, GGTAAAT and GGTAAA, but failed in binding to the sequence of GTTAC and GGTTAA. Chromatin immunoprecipitation combined with quantitative real-time reverse transcription-PCR analysis suggested that AST1 binds to the AGAG-box and/or some GT motifs to regulate the expression of stress tolerance genes, resulting in reduced reactive oxygen species, Na+ accumulation, stomatal apertures, lipid peroxidation, cell death and water loss rate, and increased proline content and reactive oxygen species scavenging capability. These physiological changes affected by AST1 finally improve salt and osmotic tolerance.
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Affiliation(s)
- Hongyun Xu
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), 26 Hexing Road, Harbin 150040, China
| | - Xinxin Shi
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), 26 Hexing Road, Harbin 150040, China
| | - Lin He
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), 26 Hexing Road, Harbin 150040, China
| | - Yong Guo
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), 26 Hexing Road, Harbin 150040, China
| | - Dandan Zang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), 26 Hexing Road, Harbin 150040, China
| | - Hongyan Li
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), 26 Hexing Road, Harbin 150040, China
| | - Wenhui Zhang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), 26 Hexing Road, Harbin 150040, China
| | - Yucheng Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), 26 Hexing Road, Harbin 150040, China
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High-throughput sequencing analysis revealed the regulation patterns of small RNAs on the development of A. comosus var. bracteatus leaves. Sci Rep 2018; 8:1947. [PMID: 29386560 PMCID: PMC5792487 DOI: 10.1038/s41598-018-20261-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 01/16/2018] [Indexed: 12/15/2022] Open
Abstract
Studies of the molecular mechanisms involved in the formation of the albino leaf cells are important for understanding the development of chimera leaves in Ananas comosus var. bracteatus. In this study, we identified a total of 163 novel miRNAs involved in the development of complete white (CWh) and complete green (CGr) leaves using high-throughput sequencing method. The potential miRNA target genes were predicted and annotated using the NR, Swiss-Prot, GO, COG, KEGG, KOG and Pfam databases. The main biological processes regulated by miRNAs were revealed. The miRNAs which potentially play important roles in the development of the leaves and the albino of the CWh leaf cells were selected and their expression patterns were analyzed. The expression levels of nine miRNAs and their potential target genes were studied using qRT-PCR. These results will help to elucidate the functional and regulatory roles of miRNAs in the formation of the albino cells and the development of the leaves of A. comosus var. bracteatus. These data may also be helpful as a resource for studies of small RNA in other leaf color chimeric plant species.
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48
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Tu YC, Tsai WS, Wei JY, Chang KY, Tien CC, Hsiao HY, Fu SF. The C2 protein of tomato leaf curl Taiwan virus is a pathogenicity determinant that interferes with expression of host genes encoding chromomethylases. PHYSIOLOGIA PLANTARUM 2017; 161:515-531. [PMID: 28786123 DOI: 10.1111/ppl.12615] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/22/2017] [Accepted: 07/28/2017] [Indexed: 06/07/2023]
Abstract
Tomato (Solanum lycopersicum) is one of the most important crops worldwide and is severely affected by geminiviruses. Tomato leaf curl Taiwan virus (ToLCTWV), belonging to the geminiviruses, was isolated in Taiwan and causes tremendous crop loss. The geminivirus-encoded C2 proteins are crucial for a successful interaction between the virus and host plants. However, the exact functions of the viral C2 protein of ToLCTWV have not been investigated. We analyzed the molecular function(s) of the C2 protein by transient or stable expression in tomato cv. Micro-Tom and Nicotiana benthamiana. Severe stunting of tomato and N. benthamiana plants infected with ToLCTWV was observed. Expression of ToLCTWV C2-green fluorescent protein (GFP) fusion protein was predominately located in the nucleus and contributed to activation of a coat protein promoter. Notably, the C2-GFP fluorescence was distributed in nuclear aggregates. Tomato and N. benthamiana plants inoculated with potato virus X (PVX)-C2 displayed chlorotic lesions and stunted growth. PVX-C2 elicited hypersensitive responses accompanied by production of reactive oxygen species in N. benthamiana plants, which suggests that the viral C2 was a potential recognition target to induce host-defense responses. In tomato and N. benthamiana, ToLCTWV C2 was found to interfere with expression of genes encoding chromomethylases. N. benthamiana plants with suppressed NbCMT3-2 expression were more susceptible to ToLCTWV infection. Transgenic N. benthamiana plants expressing the C2 protein showed decreased expression of the NbCMT3-2 gene and pNbCMT3-2::GUS (β-glucuronidase) promoter activity. C2 protein is an important pathogenicity determinant of ToLCTWV and interferes with host components involved in DNA methylation.
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Affiliation(s)
- Yu-Ching Tu
- Department of Biology, National Changhua University of Education, Changhua, Taiwan
| | - Wen-Shi Tsai
- Department of Plant Medicine, National Chiayi University, Chiayi, Taiwan
| | - Jyuan-Yu Wei
- Department of Biology, National Changhua University of Education, Changhua, Taiwan
| | - Kai-Ya Chang
- Department of Biology, National Changhua University of Education, Changhua, Taiwan
| | - Chang-Ching Tien
- Department of Biology, National Changhua University of Education, Changhua, Taiwan
| | - Hui-Yu Hsiao
- Department of Biology, National Changhua University of Education, Changhua, Taiwan
| | - Shih-Feng Fu
- Department of Biology, National Changhua University of Education, Changhua, Taiwan
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Zhang M, Xin W, Yi Z, Li Y, Liu Y, Zhang H, Chen H, Chen X, Tan S, Zhu D. Human biliverdin reductase regulates the molecular mechanism underlying cancer development. J Cell Biochem 2017; 119:1337-1345. [DOI: 10.1002/jcb.26285] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 07/11/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Min Zhang
- Department of Biopharmaceutical SciencesCollege of PharmacyHarbin Medical University (Daqing)DaqingChina
| | - Wei Xin
- Department of Biopharmaceutical SciencesCollege of PharmacyHarbin Medical University (Daqing)DaqingChina
| | - Zhi Yi
- Department of Biopharmaceutical SciencesCollege of PharmacyHarbin Medical University (Daqing)DaqingChina
| | - Yue Li
- College of PharmacyHarbin University of CommerceHarbinChina
| | - Ying Liu
- Department of Biopharmaceutical SciencesCollege of PharmacyHarbin Medical University (Daqing)DaqingChina
| | - Hongyue Zhang
- Department of Biopharmaceutical SciencesCollege of PharmacyHarbin Medical University (Daqing)DaqingChina
| | - He Chen
- Department of Obstetrics and GynecologyThe Second Affiliated Hospital of Harbin Medical UniversityHarbinChina
| | - Xinxin Chen
- Department of Biopharmaceutical SciencesCollege of PharmacyHarbin Medical University (Daqing)DaqingChina
| | - Shujie Tan
- Department of Biopharmaceutical SciencesCollege of PharmacyHarbin Medical University (Daqing)DaqingChina
| | - Daling Zhu
- Department of Biopharmaceutical SciencesCollege of PharmacyHarbin Medical University (Daqing)DaqingChina
- Biopharmaceutical Key Laboratory of Heilongjiang ProvinceHarbinChina
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Love AJ, Yu C, Petukhova NV, Kalinina NO, Chen J, Taliansky ME. Cajal bodies and their role in plant stress and disease responses. RNA Biol 2017; 14:779-790. [PMID: 27726481 PMCID: PMC5519230 DOI: 10.1080/15476286.2016.1243650] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 09/19/2016] [Accepted: 09/27/2016] [Indexed: 12/11/2022] Open
Abstract
Cajal bodies (CBs) are distinct sub-nuclear structures that are present in eukaryotic living cells and are often associated with the nucleolus. CBs play important roles in RNA metabolism and formation of RNPs involved in transcription, splicing, ribosome biogenesis, and telomere maintenance. Besides these primary roles, CBs appear to be involved in additional functions that may not be directly related to RNA metabolism and RNP biogenesis. In this review, we assess possible roles of plant CBs in RNA regulatory pathways such as nonsense-mediated mRNA decay and RNA silencing. We also summarize recent progress and discuss new non-canonical functions of plant CBs in responses to stress and disease. It is hypothesized that CBs can regulate these responses via their interaction with poly(ADP ribose)polymerase (PARP), which is known to play an important role in various physiological processes including responses to biotic and abiotic stresses. It is suggested that CBs and their components modify PARP activities and functions.
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Affiliation(s)
- Andrew J. Love
- Cell and Molecular Sciences, James Hutton Institute, Invergowrie, Dundee, UK
| | - Chulang Yu
- State Key Laboratory Breeding Base for Sustainable Pest and Disease Control, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | | | - Natalia O. Kalinina
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory, Moscow, Russia
| | - Jianping Chen
- State Key Laboratory Breeding Base for Sustainable Pest and Disease Control, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Michael E. Taliansky
- Cell and Molecular Sciences, James Hutton Institute, Invergowrie, Dundee, UK
- State Key Laboratory Breeding Base for Sustainable Pest and Disease Control, Key Laboratory of Biotechnology in Plant Protection of MOA and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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