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Bulle M, Devadasu E, Rampuria S, Subramanyam R, Kirti PB. Plastid-expressed AdDjSKI enhances photosystem II stability, delays leaf senescence, and increases fruit yield in tomato plants under heat stress. PHYSIOLOGIA PLANTARUM 2024; 176:e14374. [PMID: 38837422 DOI: 10.1111/ppl.14374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 05/13/2024] [Accepted: 05/19/2024] [Indexed: 06/07/2024]
Abstract
Heat stress substantially reduces tomato (Solanum lycopersicum) growth and yield globally, thereby jeopardizing food security. DnaJ proteins, constituents of the heat shock protein system, protect cells from diverse environmental stresses as HSP-70 molecular co-chaperones. In this study, we demonstrated that AdDjSKI, a serine-rich DnaJ III protein induced by pathogens, plays an important role in stabilizing photosystem II (PSII) in response to heat stress. Our results revealed that transplastomic tomato plants expressing the AdDjSKI gene exhibited increased levels of total soluble proteins, improved growth and chlorophyll content, reduced malondialdehyde (MDA) accumulation, and diminished PSII photoinhibition under elevated temperatures when compared with wild-type (WT) plants. Intriguingly, these transplastomic plants maintained higher levels of D1 protein under elevated temperatures compared with the WT plants, suggesting that overexpression of AdDjSKI in plastids is crucial for PSII protection, likely due to its chaperone activity. Furthermore, the transplastomic plants displayed lower accumulation of superoxide radical (O2 •─) and H2O2, in comparison with the WT plants, plausibly attributed to higher superoxide dismutase (SOD) and ascorbate peroxidase (APX) activities. This also coincides with an enhanced expression of corresponding genes, including SlCuZnSOD, SlFeSOD, SlAPX2, and SltAPX, under heat stress. Taken together, our findings reveal that chloroplastic expression of AdDjSKI in tomatoes plays a critical role in fruit yield, primarily through a combination of delayed senescence and stabilizing PSII under heat stress.
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Affiliation(s)
- Mallesham Bulle
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Elsinraju Devadasu
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Sakshi Rampuria
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Rajagopal Subramanyam
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
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Bulle M, Venkatapuram AK, Rahman MM, Attia KA, Mohammed AA, Abbagani S, Kirti PB. Enhancing drought tolerance in chilli pepper through AdDjSKI-mediated modulation of ABA sensitivity, photosynthetic preservation, and ROS scavenging. PHYSIOLOGIA PLANTARUM 2024; 176:e14379. [PMID: 38853306 DOI: 10.1111/ppl.14379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/21/2024] [Accepted: 05/12/2024] [Indexed: 06/11/2024]
Abstract
Drought stress threatens the productivity of numerous crops, including chilli pepper (Capsicum annuum). DnaJ proteins are known to play a protective role against a wide range of abiotic stresses. This study investigates the regulatory mechanism of the chloroplast-targeted chaperone protein AdDjSKI, derived from wild peanut (Arachis diogoi), in enhancing drought tolerance in chilli peppers. Overexpressing AdDjSKI in chilli plants increased chlorophyll content, reflected in the maximal photochemical efficiency of photosystem II (PSII) (Fv/Fm) compared with untransformed control (UC) plants. This enhancement coincided with the upregulated expression of PSII-related genes. Our subsequent investigations revealed that transgenic chilli pepper plants expressing AdDjSKI showed reduced accumulation of superoxide and hydrogen peroxide and, consequently, lower malondialdehyde levels and decreased relative electrolyte leakage percentage compared with UC plants. The mitigation of ROS-mediated oxidative damage was facilitated by heightened activities of antioxidant enzymes, including superoxide dismutase, catalase, ascorbate peroxidase, and peroxidase, coinciding with the upregulation of the expression of associated antioxidant genes. Additionally, our observations revealed that the ectopic expression of the AdDjSKI protein in chilli pepper plants resulted in diminished ABA sensitivity, consequently promoting seed germination in comparison with UC plants under different concentrations of ABA. All of these collectively contributed to enhancing drought tolerance in transgenic chilli plants with improved root systems when compared with UC plants. Overall, our study highlights AdDjSKI as a promising biotechnological solution for enhancing drought tolerance in chilli peppers, addressing the growing global demand for this economically valuable crop.
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Affiliation(s)
- Mallesham Bulle
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
- Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana, India
| | - Ajay Kumar Venkatapuram
- International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, India
| | - Md Mezanur Rahman
- Department of Agroforestry and Environment, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Kotab A Attia
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Riyadh, Saudi Arabia
| | - Arif Ahmed Mohammed
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Riyadh, Saudi Arabia
| | - Sadanandam Abbagani
- Plant Biotechnology Research Unit, Department of Biotechnology, Kakatiya University, Warangal, Telangana, India
| | - P B Kirti
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
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Ayyappan V, Sripathi VR, Xie S, Saha MC, Hayford R, Serba DD, Subramani M, Thimmapuram J, Todd A, Kalavacharla VK. Genome-wide profiling of histone (H3) lysine 4 (K4) tri-methylation (me3) under drought, heat, and combined stresses in switchgrass. BMC Genomics 2024; 25:223. [PMID: 38424499 PMCID: PMC10903042 DOI: 10.1186/s12864-024-10068-w] [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: 09/05/2022] [Accepted: 01/30/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND Switchgrass (Panicum virgatum L.) is a warm-season perennial (C4) grass identified as an important biofuel crop in the United States. It is well adapted to the marginal environment where heat and moisture stresses predominantly affect crop growth. However, the underlying molecular mechanisms associated with heat and drought stress tolerance still need to be fully understood in switchgrass. The methylation of H3K4 is often associated with transcriptional activation of genes, including stress-responsive. Therefore, this study aimed to analyze genome-wide histone H3K4-tri-methylation in switchgrass under heat, drought, and combined stress. RESULTS In total, ~ 1.3 million H3K4me3 peaks were identified in this study using SICER. Among them, 7,342; 6,510; and 8,536 peaks responded under drought (DT), drought and heat (DTHT), and heat (HT) stresses, respectively. Most DT and DTHT peaks spanned 0 to + 2000 bases from the transcription start site [TSS]. By comparing differentially marked peaks with RNA-Seq data, we identified peaks associated with genes: 155 DT-responsive peaks with 118 DT-responsive genes, 121 DTHT-responsive peaks with 110 DTHT-responsive genes, and 175 HT-responsive peaks with 136 HT-responsive genes. We have identified various transcription factors involved in DT, DTHT, and HT stresses. Gene Ontology analysis using the AgriGO revealed that most genes belonged to biological processes. Most annotated peaks belonged to metabolite interconversion, RNA metabolism, transporter, protein modifying, defense/immunity, membrane traffic protein, transmembrane signal receptor, and transcriptional regulator protein families. Further, we identified significant peaks associated with TFs, hormones, signaling, fatty acid and carbohydrate metabolism, and secondary metabolites. qRT-PCR analysis revealed the relative expressions of six abiotic stress-responsive genes (transketolase, chromatin remodeling factor-CDH3, fatty-acid desaturase A, transmembrane protein 14C, beta-amylase 1, and integrase-type DNA binding protein genes) that were significantly (P < 0.05) marked during drought, heat, and combined stresses by comparing stress-induced against un-stressed and input controls. CONCLUSION Our study provides a comprehensive and reproducible epigenomic analysis of drought, heat, and combined stress responses in switchgrass. Significant enrichment of H3K4me3 peaks downstream of the TSS of protein-coding genes was observed. In addition, the cost-effective experimental design, modified ChIP-Seq approach, and analyses presented here can serve as a prototype for other non-model plant species for conducting stress studies.
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Affiliation(s)
- Vasudevan Ayyappan
- Molecular Genetics and Epigenomics Laboratory, Delaware State University, Dover, DE, 19901, USA.
| | | | - Shaojun Xie
- Bioinformatics Core, Purdue University, West Lafayette, IN, 47907, USA
| | - Malay C Saha
- Noble Research Institute, LLC, Ardmore, OK, 73401, USA
| | - Rita Hayford
- Center for Bioinformatics and Computational Biology, University of Delaware, Newark, DE, 19716, USA
| | - Desalegn D Serba
- USDA-ARS, U.S. Arid Land Agricultural Research Center, Maricopa, AZ, 85138, USA.
| | - Mayavan Subramani
- Molecular Genetics and Epigenomics Laboratory, Delaware State University, Dover, DE, 19901, USA
| | | | - Antonette Todd
- Molecular Genetics and Epigenomics Laboratory, Delaware State University, Dover, DE, 19901, USA
| | - Venu Kal Kalavacharla
- Molecular Genetics and Epigenomics Laboratory, Delaware State University, Dover, DE, 19901, USA
- Center for Integrated Biological and Environmental Research (CIBER), Delaware State University, Dover, DE, 19901, USA
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Wang C, Ran F, Zang Y, Liu L, Wang D, Min Y. Genome-wide identification and expression analysis of heat shock protein gene family in cassava. THE PLANT GENOME 2023; 16:e20407. [PMID: 37899677 DOI: 10.1002/tpg2.20407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 10/12/2023] [Accepted: 10/12/2023] [Indexed: 10/31/2023]
Abstract
Heat shock proteins are important molecular chaperones that are involved in plant growth and stress responses. However, members of the Hsp family have been poorly studied in cassava. In this study, 225 MeHsp genes were identified in the cassava genome, and their genetic structures exhibited relatively conserved features within each subfamily. The 225 MeHsp genes showed random chromosomal distribution, and at least 74 pairs of segmentally duplicated MeHsp genes. Eleven tandemly duplicated MeHsp genes were identified. Cis-element analysis revealed the importance of MeHsps in plant adaptations to the environment. The prediction of protein interactions suggested that MeHsp70-20 may play a critical regulatory role in the interactive network. Furthermore, the expression profiles of MeHsps in different tissues and cell subsets were analyzed using bulk transcriptomics and single-cell transcriptomic data. Several subfamily genes exhibited unique expression patterns in the transcriptome and were selected for detailed analysis of the single-cell transcriptome. Quantitative real-time polymerase chain reaction (qRT-PCR) revealed the expression patterns of these genes under temperature stress, further supporting the prediction of cis-acting elements. This study provides valuable information for understanding the functional characteristics of MeHsp genes and the evolutionary relationships between MeHsps.
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Affiliation(s)
- Changyi Wang
- Department of Biotechnology, School of Life Sciences, Hainan University, Haikou, China
- Laboratory of Biopharmaceuticals and Molecular Pharmacology, School of Pharmaceutical Sciences, Hainan University, Haikou, China
| | - Fangfang Ran
- Department of Biotechnology, School of Life Sciences, Hainan University, Haikou, China
- Laboratory of Biopharmaceuticals and Molecular Pharmacology, School of Pharmaceutical Sciences, Hainan University, Haikou, China
| | - Yuwei Zang
- Department of Biotechnology, School of Life Sciences, Hainan University, Haikou, China
- Laboratory of Biopharmaceuticals and Molecular Pharmacology, School of Pharmaceutical Sciences, Hainan University, Haikou, China
| | - Liangwang Liu
- Department of Biotechnology, School of Life Sciences, Hainan University, Haikou, China
- Laboratory of Biopharmaceuticals and Molecular Pharmacology, School of Pharmaceutical Sciences, Hainan University, Haikou, China
| | - Dayong Wang
- Laboratory of Biopharmaceuticals and Molecular Pharmacology, School of Pharmaceutical Sciences, Hainan University, Haikou, China
- Key Laboratory of Tropical Biological Resources, Hainan University, Haikou, China
- One Health Cooperative Innovation Center, Hainan University, Haikou, China
| | - Yi Min
- Department of Biotechnology, School of Life Sciences, Hainan University, Haikou, China
- Laboratory of Biopharmaceuticals and Molecular Pharmacology, School of Pharmaceutical Sciences, Hainan University, Haikou, China
- One Health Cooperative Innovation Center, Hainan University, Haikou, China
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Lantican DV, Nocum JDL, Manohar ANC, Mendoza JVS, Gardoce RR, Lachica GC, Gueco LS, Dela Cueva FM. Comparative RNA-seq analysis of resistant and susceptible banana genotypes reveals molecular mechanisms in response to banana bunchy top virus (BBTV) infection. Sci Rep 2023; 13:18719. [PMID: 37907581 PMCID: PMC10618458 DOI: 10.1038/s41598-023-45937-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 10/25/2023] [Indexed: 11/02/2023] Open
Abstract
Bananas hold significant economic importance as an agricultural commodity, serving as a primary livelihood source, a favorite fruit, and a staple crop in various regions across the world. However, Banana bunchy top disease (BBTD), which is caused by banana bunchy top virus (BBTV), poses a considerable threat to banana cultivation. To understand the resistance mechanism and the interplay of host suitability factors in the presence of BBTV, we conducted RNA-seq-based comparative transcriptomics analysis on mock-inoculated and BBTV-inoculated samples from resistant (wild Musa balbisiana) and susceptible (Musa acuminata 'Lakatan') genotypes. We observed common patterns of expression for 62 differentially expressed genes (DEGs) in both genotypes, which represent the typical defense response of bananas to BBTV. Furthermore, we identified 99 DEGs exclusive to the 'Lakatan' banana cultivar, offering insights into the host factors and susceptibility mechanisms that facilitate successful BBTV infection. In parallel, we identified 151 DEGs unique to the wild M. balbisiana, shedding light on the multifaceted mechanisms of BBTV resistance, involving processes such as secondary metabolite biosynthesis, cell wall modification, and pathogen perception. Notably, our validation efforts via RT-qPCR confirmed the up-regulation of the glucuronoxylan 4-O-methyltransferase gene (14.28 fold-change increase), implicated in xylan modification and degradation. Furthermore, our experiments highlighted the potential recruitment of host's substrate adaptor ADO (30.31 fold-change increase) by BBTV, which may play a role in enhancing banana susceptibility to the viral pathogen. The DEGs identified in this work can be used as basis in designing associated gene markers for the precise integration of resistance genes in marker-assisted breeding programs. Furthermore, the findings can be applied to develop genome-edited banana cultivars targeting the resistance and susceptibility genes, thus developing novel cultivars that are resilient to important diseases.
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Affiliation(s)
- Darlon V Lantican
- Institute of Plant Breeding, College of Agriculture and Food Science, University of the Philippines Los Baños, College, 4031, Laguna, Philippines.
| | - Jen Daine L Nocum
- Institute of Plant Breeding, College of Agriculture and Food Science, University of the Philippines Los Baños, College, 4031, Laguna, Philippines
| | - Anand Noel C Manohar
- Institute of Plant Breeding, College of Agriculture and Food Science, University of the Philippines Los Baños, College, 4031, Laguna, Philippines
| | - Jay-Vee S Mendoza
- Institute of Plant Breeding, College of Agriculture and Food Science, University of the Philippines Los Baños, College, 4031, Laguna, Philippines
| | - Roanne R Gardoce
- Institute of Plant Breeding, College of Agriculture and Food Science, University of the Philippines Los Baños, College, 4031, Laguna, Philippines
| | - Grace C Lachica
- Institute of Plant Breeding, College of Agriculture and Food Science, University of the Philippines Los Baños, College, 4031, Laguna, Philippines
- Philippine Genome Center - Program for Agriculture, Livestock, Fisheries, Forestry, Office of the Vice Chancellor for Research and Extension, University of the Philippines Los Baños, College, 4031, Laguna, Philippines
| | - Lavernee S Gueco
- Institute of Plant Breeding, College of Agriculture and Food Science, University of the Philippines Los Baños, College, 4031, Laguna, Philippines
| | - Fe M Dela Cueva
- Institute of Plant Breeding, College of Agriculture and Food Science, University of the Philippines Los Baños, College, 4031, Laguna, Philippines
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Liu S, Mo X, Sun L, Gao L, Su L, An Y, Zhou P. MsDjB4, a HSP40 Chaperone in Alfalfa ( Medicago sativa L.), Improves Alfalfa Hairy Root Tolerance to Aluminum Stress. PLANTS (BASEL, SWITZERLAND) 2023; 12:2808. [PMID: 37570962 PMCID: PMC10421020 DOI: 10.3390/plants12152808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/28/2023] [Accepted: 07/17/2023] [Indexed: 08/13/2023]
Abstract
The toxicity of aluminum (Al) in acidic soils poses a significant limitation to crop productivity. In this study, we found a notable increase in DnaJ (HSP40) expression in the roots of Al-tolerant alfalfa (WL-525HQ), which we named MsDjB4. Transient conversion assays of tobacco leaf epidermal cells showed that MsDjB4 was targeted to the membrane system including Endoplasmic Reticulum (ER), Golgi, and plasma membrane. We overexpressed (MsDjB4-OE) and suppressed (MsDjB4-RNAi) MsDjB4 in alfalfa hairy roots and found that MsDjB4-OE lines exhibited significantly better tolerance to Al stress compared to wild-type and RNAi hairy roots. Specifically, MsDjB4-OE lines had longer root length, more lateral roots, and lower Al content compared to wild-type and RNAi lines. Furthermore, MsDjB4-OE lines showed lower levels of lipid peroxidation and ROS, as well as higher activity of antioxidant enzymes SOD, CAT, and POD compared to wild-type and RNAi lines under Al stress. Moreover, MsDjB4-OE lines had higher soluble protein content compared to wild-type and RNAi lines after Al treatment. These findings provide evidence that MsDjB4 contributes to the improved tolerance of alfalfa to Al stress by facilitating protein synthesis and enhancing antioxidant capacity.
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Affiliation(s)
- Siyan Liu
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (S.L.); (X.M.); (L.S.); (L.G.); (L.S.); (Y.A.)
| | - Xin Mo
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (S.L.); (X.M.); (L.S.); (L.G.); (L.S.); (Y.A.)
| | - Linjie Sun
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (S.L.); (X.M.); (L.S.); (L.G.); (L.S.); (Y.A.)
| | - Li Gao
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (S.L.); (X.M.); (L.S.); (L.G.); (L.S.); (Y.A.)
| | - Liantai Su
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (S.L.); (X.M.); (L.S.); (L.G.); (L.S.); (Y.A.)
| | - Yuan An
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (S.L.); (X.M.); (L.S.); (L.G.); (L.S.); (Y.A.)
- Key Laboratory of Urban Agriculture, Ministry of Agriculture, Shanghai 201101, China
| | - Peng Zhou
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (S.L.); (X.M.); (L.S.); (L.G.); (L.S.); (Y.A.)
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Li Z, Wang Y, Yu L, Gu Y, Zhang L, Wang J, Qiu L. Overexpression of the Purple Perilla ( Perilla frutescens (L.)) FAD3a Gene Enhances Salt Tolerance in Soybean. Int J Mol Sci 2023; 24:10533. [PMID: 37445708 DOI: 10.3390/ijms241310533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/13/2023] [Accepted: 06/15/2023] [Indexed: 07/15/2023] Open
Abstract
The increasingly serious trend of soil salinization inhibits the normal growth and development of soybeans, leading to reduced yields and a serious threat to global crop production. Microsomal ω-3 fatty acid desaturase encoded by the FAD3 gene is a plant enzyme that plays a significant role in α-linolenic acid synthesis via regulating the membrane fluidity to better accommodate various abiotic stresses. In this study, PfFAD3a was isolated from perilla and overexpressed in soybeans driven by CaMV P35S, and the salt tolerance of transgenic plants was then evaluated. The results showed that overexpression of PfFAD3a increased the expression of PfFAD3a in both the leaves and seeds of transgenic soybean plants, and α-linolenic acid content also significantly increased; hence, it was shown to significantly enhance the salt tolerance of transgenic plants. Physiological and biochemical analysis showed that overexpression of PfFAD3a increased the relative chlorophyll content and PSII maximum photochemical efficiency of transgenic soybean plants under salt stress; meanwhile, a decreased accumulation of MDA, H2O2, and O2•-, increased the activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbic acid peroxidase (APX), as well as the production of proline and soluble sugar. In summary, the overexpression of PfFAD3a may enhance the salt tolerance in transgenic soybean plants through enhanced membrane fluidity and through the antioxidant capacity induced by C18:3.
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Affiliation(s)
- Zhan Li
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River (Co-Construction by Ministry and Province), College of Agriculture, Yangtze University, Jingzhou 434025, China
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ying Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Lili Yu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yongzhe Gu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Lijuan Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jun Wang
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River (Co-Construction by Ministry and Province), College of Agriculture, Yangtze University, Jingzhou 434025, China
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Lijuan Qiu
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River (Co-Construction by Ministry and Province), College of Agriculture, Yangtze University, Jingzhou 434025, China
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Zhang X, Zhang X, Wang L, Liu Q, Liang Y, Zhang J, Xue Y, Tian Y, Zhang H, Li N, Sheng C, Nie P, Feng S, Liao B, Bai D. Fine mapping of a QTL and identification of candidate genes associated with cold tolerance during germination in peanut ( Arachis hypogaea L.) on chromosome B09 using whole genome re-sequencing. FRONTIERS IN PLANT SCIENCE 2023; 14:1153293. [PMID: 37223785 PMCID: PMC10200878 DOI: 10.3389/fpls.2023.1153293] [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: 01/29/2023] [Accepted: 03/28/2023] [Indexed: 05/25/2023]
Abstract
Low temperatures significantly affect the growth and yield of peanuts. Temperatures lower than 12 °C are generally detrimental for the germination of peanuts. To date, there has been no report on precise information on the quantitative trait loci (QTL) for cold tolerance during the germination in peanuts. In this study, we developed a recombinant inbred line (RIL) population comprising 807 RILs by tolerant and sensitive parents. Phenotypic frequencies of germination rate low-temperature conditions among RIL population showed normally distributed in five environments. Then, we constructed a high density SNP-based genetic linkage map through whole genome re-sequencing (WGRS) technique and identified a major quantitative trait locus (QTL), qRGRB09, on chromosome B09. The cold tolerance-related QTLs were repeatedly detected in all five environments, and the genetic distance was 6.01 cM (46.74 cM - 61.75 cM) after taking a union set. To further confirm that qRGRB09 was located on chromosome B09, we developed Kompetitive Allele Specific PCR (KASP) markers for the corresponding QTL regions. A regional QTL mapping analysis, which was conducted after taking the intersection of QTL intervals of all environments into account, confirmed that qRGRB09 was between the KASP markers, G22096 and G220967 (chrB09:155637831-155854093), and this region was 216.26 kb in size, wherein a total of 15 annotated genes were detected. This study illustrates the relevance of WGRS-based genetic maps for QTL mapping and KASP genotyping that facilitated QTL fine mapping of peanuts. The results of our study also provided useful information on the genetic architecture underlying cold tolerance during germination in peanuts, which in turn may be useful for those engaged in molecular studies as well as crop improvement in the cold-stressed environment.
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Affiliation(s)
- Xin Zhang
- Institute of Industrial Crops, Shanxi Agricultural University, Taiyuan, China
- State Key Laboratory of Sustainable Dryland Agriculture, Shanxi Agricultural University, Taiyuan, China
| | - Xiaoji Zhang
- College of Agronomy, Shanxi Agricultural University, Taigu, China
| | - Luhuan Wang
- College of Agronomy, Shanxi Agricultural University, Taigu, China
| | - Qimei Liu
- College of Plant Protection, Shanxi Agricultural University, Taigu, China
| | - Yuying Liang
- College of Agronomy, Shanxi Agricultural University, Taigu, China
| | - Jiayu Zhang
- College of Agronomy, Shanxi Agricultural University, Taigu, China
| | - Yunyun Xue
- Institute of Industrial Crops, Shanxi Agricultural University, Taiyuan, China
| | - Yuexia Tian
- Institute of Industrial Crops, Shanxi Agricultural University, Taiyuan, China
| | - Huiqi Zhang
- Institute of Industrial Crops, Shanxi Agricultural University, Taiyuan, China
| | - Na Li
- Institute of Industrial Crops, Shanxi Agricultural University, Taiyuan, China
| | - Cong Sheng
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Pingping Nie
- College of Life Sciences, Zaozhuang University, Zaozhuang, China
| | - Suping Feng
- College of Food Science and Engineering, Hainan Tropical Ocean College, Hainan, China
| | - Boshou Liao
- The Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, China
| | - Dongmei Bai
- Institute of Industrial Crops, Shanxi Agricultural University, Taiyuan, China
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Fang X, Yan P, Owusu AM, Zhu T, Li S. Verification of the Interaction Target Protein of the Effector ApCE22 of Arthrinium phaeospermum in Bambusa pervariabilis × Dendrocalamopsis grandis. Biomolecules 2023; 13:biom13040590. [PMID: 37189340 DOI: 10.3390/biom13040590] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
The study of interaction proteins of the pathogen A. phaeospermum effector protein is an important means to analyze the disease-resistance mechanism of Bambusa pervariabilis × Dendrocalamopsis grandis shoot blight. To obtain the proteins interacting with the effector ApCE22 of A. phaeospermum, 27 proteins interacting with the effector ApCE22 were initially identified via a yeast two-hybrid assay, of which four interaction proteins were obtained after one-to-one validation. The B2 protein and the chaperone protein DnaJ chloroplast protein were then verified to interact with the ApCE22 effector protein by bimolecular fluorescence complementation and GST pull-down methods. Advanced structure prediction showed that the B2 protein contained the DCD functional domain related to plant development and cell death, and the DnaJ protein contained the DnaJ domain related to stress resistance. The results showed that both the B2 protein and DnaJ protein in B. pervariabilis × D. grandis were the target interaction proteins of the ApCE22 effector of A. phaeospermum and related to the stress resistance of the host B. pervariabilis × D. grandis. The successful identification of the pathogen effector interaction target protein in B. pervariabilis × D. grandis plays an important role in the mechanism of pathogen–host interaction, thus providing a theoretical basis for the control of B. pervariabilis × D. grandis shoot blight.
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10
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Gautam R, Meena RK, Rampuria S, Shukla P, Kirti PB. Ectopic expression of DnaJ type-I protein homolog of Vigna aconitifolia ( VaDJI) confers ABA insensitivity and multiple stress tolerance in transgenic tobacco plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1135552. [PMID: 37152162 PMCID: PMC10154610 DOI: 10.3389/fpls.2023.1135552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 03/31/2023] [Indexed: 05/09/2023]
Abstract
Reduced crop productivity results from altered plant physiological processes caused by dysfunctional proteins due to environmental stressors. In this study, a novel DnaJ Type-I encoding gene, VaDJI having a zinc finger motif in its C-terminal domain was found to be induced early upon treatment with heat stress (within 5 min) in a heat tolerant genotype of Vigna aconitifolia RMO-40. VaDJI is induced by multiple stresses. In tobacco, ectopic expression of VaDJI reduced ABA sensitivity during seed germination and the early stages of seedling growth of transgenic tobacco plants. Concomitantly, it also improved the ability of transgenic tobacco plants to withstand drought stress by modulating the photosynthetic efficiency, with the transgenic plants having higher Fv/Fm ratios and reduced growth inhibition. Additionally, transgenic plants showed a reduced build-up of H2O2 and lower MDA levels and higher chlorophyll content during drought stress, which attenuated cell damage and reduced oxidative damage. An analysis using the qRT-PCR study demonstrated that VaDJI overexpression is associated with the expression of some ROS-detoxification-related genes and stress-marker genes that are often induced during drought stress responses. These findings suggest a hypothesis whereby VaDJI positively influences drought stress tolerance and ABA signalling in transgenic tobacco, and suggests that it is a potential gene for genetic improvement of drought and heat stress tolerance in crop plants.
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Affiliation(s)
- Ranjana Gautam
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
- Department of Life Sciences and Biotechnology, Chhatrapati Shahu Ji Maharaj University, Kanpur, Uttar Pradesh, India
- *Correspondence: Ranjana Gautam, ; P. B. Kirti,
| | - Rajesh Kumar Meena
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Sakshi Rampuria
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Pawan Shukla
- Seri-Biotech Research Laboratory, Central Silk Board, Bangalore, India
| | - P. B. Kirti
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
- *Correspondence: Ranjana Gautam, ; P. B. Kirti,
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11
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Cai G, Xu Y, Zhang S, Chen T, Liu G, Li Z, Zhu Y, Wang G. A tomato chloroplast-targeted DnaJ protein, SlDnaJ20 maintains the stability of photosystem I/II under chilling stress. PLANT SIGNALING & BEHAVIOR 2022; 17:2139116. [PMID: 36408837 PMCID: PMC9683050 DOI: 10.1080/15592324.2022.2139116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
DnaJ proteins are key molecular chaperones that act as a part of the stress response to stabilize plant proteins, thereby maintaining protein homeostasis under stressful conditions. Herein we used transgenic plants to explore the role of the tomato (Solanum lycopersicum) SlDnaJ20 chloroplast DnaJ protein in to the resistance of these proteins to cold. When chilled, transgenic plants exhibited superior cold resistance, with reduced growth inhibition and cellular damage and increased fresh mass and chlorophyll content relative to control. These transgenic plants further exhibited increased Fv/Fm, P700 oxidation, φRo, and δRo relative to control plants under chilling conditions. Under these same cold conditions, these transgenic plants also exhibited higher levels of core proteins in the photosystem I (PSI) and II (PSII) complexes (PsaA and PsaB; D1 and D2) relative to control wild-type plants. Together these results suggested that the overexpression of SlDnaJ20 is sufficient to maintain PSI and PSII complex stability and to alleviate associated photoinhibition of these complexes, thereby increasing transgenic plant resistance to cold stress.
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Affiliation(s)
- Guohua Cai
- School of Biological Sciences, Jining Medical University, Ri’zhao, 276800, P.R. China
| | - Yujie Xu
- School of Biological Sciences, Jining Medical University, Ri’zhao, 276800, P.R. China
| | - Shuxia Zhang
- School of Biological Sciences, Jining Medical University, Ri’zhao, 276800, P.R. China
| | - Tingting Chen
- School of Biological Sciences, Jining Medical University, Ri’zhao, 276800, P.R. China
| | - Gan Liu
- School of Biological Sciences, Jining Medical University, Ri’zhao, 276800, P.R. China
| | - Zhengyue Li
- School of Biological Sciences, Jining Medical University, Ri’zhao, 276800, P.R. China
| | - Youshuang Zhu
- School of Biological Sciences, Jining Medical University, Ri’zhao, 276800, P.R. China
| | - Guodong Wang
- School of Biological Sciences, Jining Medical University, Ri’zhao, 276800, P.R. China
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12
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Liu X, Li A, Wang S, Lan C, Wang Y, Li J, Zhu J. Overexpression of Pyrus sinkiangensis HAT5 enhances drought and salt tolerance, and low-temperature sensitivity in transgenic tomato. FRONTIERS IN PLANT SCIENCE 2022; 13:1036254. [PMID: 36420018 PMCID: PMC9676457 DOI: 10.3389/fpls.2022.1036254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
The homeodomain-leucine zipper protein HAT belongs to the homeodomain leucine zipper subfamily (HD-Zip) and is important for regulating plant growth and development and stress tolerance. To investigate the role of HAT5 in tolerance to drought, salt, and low temperature stress, we selected a HAT gene from Pyrus sinkiangensis Yü (Pyrus sinkiangensis T.T. Yu). The sequences were analyzed using ioinformatics, and the overexpressed tomato lines were obtained using molecular biology techniques. The phenotypes, physiological, and biochemical indexes of the wild-type and transgenic tomato lines were observed under different stress conditions. We found that the gene had the highest homology with PbrHAT5. Under drought and NaCl stress, osmotic regulatory substances (especially proline) were significantly accumulated, and antioxidant enzyme activities were enhanced. The malondialdehyde level and relative electrical conductivity of transgenic tomatoes under low temperature (freezing) stress were significantly higher than those of wild-type tomatoes. The reactive oxygen species scavenging system was unbalanced. This study found that PsHAT5 improved the tolerance of tomatoes to drought and salt stress by regulating proline metabolism and oxidative stress ability, reducing the production of reactive oxygen species, and maintaining normal cell metabolism. In conclusion, the PsHAT5 transcription factor has great potential in crop resistance breeding, which lays a theoretical foundation for future excavation of effective resistance genes of the HD-Zip family and experimental field studies.
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Affiliation(s)
| | | | | | | | | | - Jin Li
- *Correspondence: Jianbo Zhu, ; Jin Li,
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13
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Yang L, Xia L, Zeng Y, Han Q, Zhang S. Grafting enhances plants drought resistance: Current understanding, mechanisms, and future perspectives. FRONTIERS IN PLANT SCIENCE 2022; 13:1015317. [PMID: 36275555 PMCID: PMC9583147 DOI: 10.3389/fpls.2022.1015317] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/20/2022] [Indexed: 05/28/2023]
Abstract
Drought, one of the most severe and complex abiotic stresses, is increasingly occurring due to global climate change and adversely affects plant growth and yield. Grafting is a proven and effective tool to enhance plant drought resistance ability by regulating their physiological and molecular processes. In this review, we have summarized the current understanding, mechanisms, and perspectives of the drought stress resistance of grafted plants. Plants resist drought through adaptive changes in their root, stem, and leaf morphology and structure, stomatal closure modulation to reduce transpiration, activating osmoregulation, enhancing antioxidant systems, and regulating phytohormones and gene expression changes. Additionally, the mRNAs, miRNAs and peptides crossing the grafted healing sites also confer drought resistance. However, the interaction between phytohormones, establishment of the scion-rootstock communication through genetic materials to enhance drought resistance is becoming a hot research topic. Therefore, our review provides not only physiological evidences for selecting drought-resistant rootstocks or scions, but also a clear understanding of the potential molecular effects to enhance drought resistance using grafted plants.
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Affiliation(s)
- Le Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Linchao Xia
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Yi Zeng
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Qingquan Han
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, China
| | - Sheng Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
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14
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Luo X, Li J, Xiao C, Sun L, Xiang W, Chen N, Lei C, Lei H, Long Y, Long T, Suolang Q, Yi K. Whole-Genome Resequencing of Xiangxi Cattle Identifies Genomic Diversity and Selection Signatures. Front Genet 2022; 13:816379. [PMID: 35711927 PMCID: PMC9196905 DOI: 10.3389/fgene.2022.816379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 04/13/2022] [Indexed: 01/11/2023] Open
Abstract
Understanding the genetic diversity in Xiangxi cattle may facilitate our efforts toward further breeding programs. Here we compared 23 Xiangxi cattle with 78 published genomes of 6 worldwide representative breeds to characterize the genomic variations of Xiangxi cattle. Based on clustering models in population structure analysis, we displayed that Xiangxi cattle had a mutual genome ancestor with Chinese indicine, Indian indicine, and East Asian taurine. Population genetic diversity was analyzed by four methods (nucleotide diversity, inbreeding coefficient, linkage disequilibrium decay and runs of homozygosity), and we found that Xiangxi cattle had higher genomic diversity and weaker artificial selection than commercial breed cattle. Using four testing methods (θπ, CLR, FST, and XP-EHH), we explored positive selection regions harboring genes in Xiangxi cattle, which were related to reproduction, growth, meat quality, heat tolerance, and immune response. Our findings revealed the extent of sequence variation in Xiangxi cattle at the genome-wide level. All of our fruitful results can bring about a valuable genomic resource for genetic studies and breed protection in the future.
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Affiliation(s)
- Xiaoyu Luo
- Hunan Institute of Animal and Veterinary Science, Changsha, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Xianyang, China
| | - Jianbo Li
- Hunan Institute of Animal and Veterinary Science, Changsha, China.,Xiangxi Cattle Engineering Technology Center of Hunan Province, Huayuan, China
| | - Chentong Xiao
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Xianyang, China
| | - Luyang Sun
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Xianyang, China
| | - Weixuan Xiang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Xianyang, China.,School of Life Science, University of Bristol, Bristol, United Kingdom
| | - Ningbo Chen
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Xianyang, China
| | - Chuzhao Lei
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Xianyang, China
| | - Hong Lei
- Hunan Institute of Animal and Veterinary Science, Changsha, China.,Xiangxi Cattle Engineering Technology Center of Hunan Province, Huayuan, China
| | - Yun Long
- Xiangxi Cattle Engineering Technology Center of Hunan Province, Huayuan, China.,Hunan De Nong Animal Husbandry Group Co. Ltd., Huayuan, China
| | - Ting Long
- Xiangxi Cattle Engineering Technology Center of Hunan Province, Huayuan, China.,Hunan De Nong Animal Husbandry Group Co. Ltd., Huayuan, China
| | - Quji Suolang
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Science, Lhasa, China
| | - Kangle Yi
- Hunan Institute of Animal and Veterinary Science, Changsha, China.,Xiangxi Cattle Engineering Technology Center of Hunan Province, Huayuan, China
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15
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Drought tolerance improvement in Solanum lycopersicum: an insight into "OMICS" approaches and genome editing. 3 Biotech 2022; 12:63. [PMID: 35186660 PMCID: PMC8825918 DOI: 10.1007/s13205-022-03132-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/24/2022] [Indexed: 12/16/2022] Open
Abstract
Solanum lycopersicum (tomato) is an internationally acclaimed vegetable crop that is grown worldwide. However, drought stress is one of the most critical challenges for tomato production, and it is a crucial task for agricultural biotechnology to produce drought-resistant cultivars. Although breeders have done a lot of work on the tomato to boost quality and quantity of production and enhance resistance to biotic and abiotic stresses, conventional tomato breeding approaches have been limited to improving drought tolerance because of the intricacy of drought traits. Many efforts have been made to better understand the mechanisms involved in adaptation and tolerance to drought stress in tomatoes throughout the years. "Omics" techniques, such as genomics, transcriptomics, proteomics, and metabolomics in combination with modern sequencing technologies, have tremendously aided the discovery of drought-responsive genes. In addition, the availability of biotechnological tools, such as plant transformation and the recently developed genome editing system for tomatoes, has opened up wider opportunities for validating the function of drought-responsive genes and the generation of drought-tolerant varieties. This review highlighted the recent progresses for tomatoes improvement against drought stress through "omics" and "multi-omics" technologies including genetic engineering. We have also discussed the roles of non-coding RNAs and genome editing techniques for drought stress tolerance improvement in tomatoes.
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16
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Huang X, Huang L, Zhao X, Jia J, Zhang G, Zhang M, Jiang M. A J-Protein OsDjC46 Interacts with ZFP36 to Participate in ABA-Mediated Antioxidant Defense in Rice. Antioxidants (Basel) 2022; 11:antiox11020207. [PMID: 35204090 PMCID: PMC8868554 DOI: 10.3390/antiox11020207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 02/04/2023] Open
Abstract
ZFP36 has been shown to be involved in ABA-induced antioxidant defense and enhance rice tolerance to drought, salt stress and oxidative stress. Using ZFP36 as bait, a yeast two-hybrid system was used to obtain the interacting protein OsDjC46, which belongs to heat shock protein and usually exists in the form of molecular chaperone, was identified. Further Co-IP (co-immunoprecipitation), BiFC (bimolecular fluorescence complement) and GST (glutathione-S-transferase) pull-down experiments verified that ZFP36 interacted with OsDjC46 in vivo and in vitro. Heat shock protein has been shown to increase plant resistance to stresses, but whether OsDjC46 was a key factor in plant response to various stresses has not been reported. Here, various stimuli, such as abscisic acid (ABA), hydrogen peroxidase (H2O2), polyethylene (PEG) and sodium chloride (NaCl) markedly induced the expression of OsDjC46 in the seedlings. Overexpression of OsDjC46 in rice can enhance the tolerance to salinity and drought; in contrast, knockout of OsDjC46 rice plants was more sensitive to salt stress and drought. Further investigation revealed that OsDjC46 could participate in regulating the expression and activities of antioxidant of SOD and CAT under drought and salt stress. Taken together, these findings reveal a novel function of OsDjC46 in adjusting ABA-induced antioxidant defense.
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Affiliation(s)
- Xingxiu Huang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (X.H.); (L.H.); (X.Z.); (J.J.); (G.Z.); (M.Z.)
| | - Liping Huang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (X.H.); (L.H.); (X.Z.); (J.J.); (G.Z.); (M.Z.)
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China
| | - Xixi Zhao
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (X.H.); (L.H.); (X.Z.); (J.J.); (G.Z.); (M.Z.)
| | - Jing Jia
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (X.H.); (L.H.); (X.Z.); (J.J.); (G.Z.); (M.Z.)
| | - Gang Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (X.H.); (L.H.); (X.Z.); (J.J.); (G.Z.); (M.Z.)
| | - Mengyao Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (X.H.); (L.H.); (X.Z.); (J.J.); (G.Z.); (M.Z.)
| | - Mingyi Jiang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (X.H.); (L.H.); (X.Z.); (J.J.); (G.Z.); (M.Z.)
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
- Correspondence: ; Tel.: +86-025-84396372
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17
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Genome-Wide Identification and Characterization of DnaJ Gene Family in Grape (Vitis vinifera L.). HORTICULTURAE 2021. [DOI: 10.3390/horticulturae7120589] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Grape production in southern China suffers great loss due to various environmental stresses. To understand the mechanism of how the grape plants respond to these stresses is an active area of research in developing cultivation techniques. Plant stress resistance is known to rely on special proteins. Amongst them, DnaJ protein (HSP40) serves as co-chaperones of HSP70, playing crucial roles in various stress response. However, the DnaJ proteins encoded by the DnaJ gene family in Vitis vinifera L. have not been fully described yet. In this study, we identified 78 VvDnaJs in the grape genome that can be classified into three groups—namely, DJA, DJB, and DJC. To reveal the evolutionary and stress response mechanisms for the VvDnaJ gene family, their evolutionary and expression patterns were analyzed using the bioinformatic approach and qRT-PCR. We found that the members in the same group exhibited a similar gene structure and protein domain organization. Gene duplication analysis demonstrated that segmental and tandem duplication may not be the dominant pathway of gene expansion in the VvDnaJ gene family. Codon usage pattern analysis showed that the codon usage pattern of VvDnaJs differs obviously from the monocotyledon counterparts. Tissue-specific analysis revealed that 12 VvDnaJs present a distinct expression profile, implying their distinct roles in various tissues. Cis-acting element analysis showed that almost all VvDnaJs contained the elements responsive to either hormones or stresses. Therefore, the expression levels of VvDnaJs subjected to exogenous hormone applications and stress treatments were determined, and we found that VvDnaJs were sensitive to hormone treatments and shade, salt, and heat stresses, especially VIT_00s0324g00040. The findings of this study could provide comprehensive information for the further investigation on the genetics and protein functions of the DnaJ gene family in grape.
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18
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Kumar J, Gupta DS, Kesari R, Verma R, Murugesan S, Basu PS, Soren KR, Gupta S, Singh NP. Comprehensive RNAseq analysis for identification of genes expressed under heat stress in lentil. PHYSIOLOGIA PLANTARUM 2021; 173:1785-1807. [PMID: 33829491 DOI: 10.1111/ppl.13419] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 04/06/2021] [Indexed: 06/12/2023]
Abstract
Lentils are highly sensitive to abrupt increases in temperature during the mid to late reproductive stages, leading to severe biomass and seed yield reduction. Therefore, we carried out an RNAseq analysis between IG4258 (heat tolerant) and IG3973 (heat sensitive) lentil genotypes at the reproductive stage under both normal and heat stress conditions in the field. It resulted in 209,549 assembled transcripts and among these 161,809 transcripts had coding regions, of which 94,437 transcripts were annotated. The differential gene expression analysis showed upregulation of 678 transcripts and downregulation of 680 transcripts between the tolerant and sensitive genotypes at the early reproductive stage. While 76 transcripts were upregulated and 47 transcripts were downregulated at the late reproductive stage under heat stress conditions. The validation of 12 up-or downregulated transcripts through RT-PCR corresponded well with the expression analysis data of RNAseq, with a correlation of R2 = 0.89. Among these transcripts, the DN364_c1_g1_i9 and DN2218_c0_g1_i5 transcripts encoded enzymes involved in the tryptophan pathway, indicating that tryptophan biosynthesis plays a role under heat stress in lentil. Moreover, KEGG pathways enrichment analysis identified transcripts associated with genes encoding proteins/regulating factors related to different metabolic pathways including signal transduction, fatty acid biosynthesis, rRNA processing, ribosome biogenesis, gibberellin (GA) biosynthesis, and riboflavin biosynthesis. This analysis also identified 6852 genic-SSRs leading to the development of 4968 SSR primers that are potential genomic resources for molecular mapping of heat-tolerant genes in lentil.
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Affiliation(s)
- Jitendra Kumar
- Division of Crop Improvement, ICAR-Indian Institute of Pulses Research, Kanpur, India
| | - Debjyoti Sen Gupta
- Division of Crop Improvement, ICAR-Indian Institute of Pulses Research, Kanpur, India
| | - Ravi Kesari
- Department of Plant Breeding and Genetics, Bhola Paswan Shastri Agricultural College, Purnea, India
| | - Renu Verma
- Division of Basic Sciences, ICAR-Indian Institute of Pulses Research, Kanpur, India
| | | | - Partha Sarathi Basu
- Division of Basic Sciences, ICAR-Indian Institute of Pulses Research, Kanpur, India
| | - Khela Ram Soren
- Division of Biotechnology, ICAR-Indian Institute of Pulses Research, Kanpur, India
| | - Sanjeev Gupta
- All India Co-ordinated Research Project on MULLaRP, ICAR-Indian Institute of Pulses Research, Kanpur, India
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19
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Zheng Q, Wang X, Qi Y, Ma Y. Selection and validation of reference genes for qRT-PCR analysis during fruit ripening of red pitaya (Hylocereus polyrhizus). FEBS Open Bio 2021; 11:3142-3152. [PMID: 33269508 PMCID: PMC8564333 DOI: 10.1002/2211-5463.13053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 09/29/2020] [Accepted: 11/30/2020] [Indexed: 11/08/2022] Open
Abstract
Red pitaya (Hylocereus polyrhizus) is widely cultivated in southern and southwestern China. To provide a basis for studying the molecular mechanisms of the ripening of this fruit, we carried out RNA sequencing (RNA-seq) analysis to identify differentially and stably expressed unigenes. The latter may serve as a resource of potential reference genes for normalization of target gene expression determined using quantitative real-time PCR (qRT-PCR). We selected 11 candidate reference genes from our RNA-seq analysis of red pitaya fruit ripening (ACT7, EF-1α, IF-4α, PTBP, PP2A, EF2, Hsp70, GAPDH, DNAJ, TUB and CYP), as well as β-ACT, which has been used as a reference gene for pitayas in previous studies. We then comprehensively evaluated their expression stability during fruit ripening using four statistical methods (GeNorm, NormFinder, BestKeeper and DeltaCt) and merged the four outputs using the online tool RefFinder for the final ranking. We report that PTBP and DNAJ showed the most stable expression patterns, whereas CYP and ACT7 showed the least stable expression patterns. The relative gene expression of red pitaya sucrose synthase and 4, 5-dihydroxyphenylalanine-extradiol-dioxygenase as determined by quantitative real-time PCR and normalized to PTBP and DNAJ was consistent with the RNA-seq results, suggesting that PTBP and DNAJ are suitable reference genes for studies of red pitaya fruit ripening.
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Affiliation(s)
- Qianming Zheng
- Institute of Pomology ScienceGuizhou Provincial Academy of Agricultural SciencesGuiyangChina
| | - Xiaoke Wang
- Institute of Pomology ScienceGuizhou Provincial Academy of Agricultural SciencesGuiyangChina
| | - Yong Qi
- Institute of Pomology ScienceGuizhou Provincial Academy of Agricultural SciencesGuiyangChina
| | - Yuhua Ma
- Institute of Pomology ScienceGuizhou Provincial Academy of Agricultural SciencesGuiyangChina
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20
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Kundrátová K, Bartas M, Pečinka P, Hejna O, Rychlá A, Čurn V, Červeň J. Transcriptomic and Proteomic Analysis of Drought Stress Response in Opium Poppy Plants during the First Week of Germination. PLANTS 2021; 10:plants10091878. [PMID: 34579414 PMCID: PMC8465278 DOI: 10.3390/plants10091878] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/30/2021] [Accepted: 09/08/2021] [Indexed: 11/16/2022]
Abstract
Water deficiency is one of the most significant abiotic stresses that negatively affects growth and reduces crop yields worldwide. Most research is focused on model plants and/or crops which are most agriculturally important. In this research, drought stress was applied to two drought stress contrasting varieties of Papaver somniferum (the opium poppy), a non-model plant species, during the first week of its germination, which differ in responses to drought stress. After sowing, the poppy seedlings were immediately subjected to drought stress for 7 days. We conducted a large-scale transcriptomic and proteomic analysis for drought stress response. At first, we found that the transcriptomic and proteomic profiles significantly differ. However, the most significant findings are the identification of key genes and proteins with significantly different expressions relating to drought stress, e.g., the heat-shock protein family, dehydration responsive element-binding transcription factors, ubiquitin E3 ligase, and others. In addition, metabolic pathway analysis showed that these genes and proteins were part of several biosynthetic pathways most significantly related to photosynthetic processes, and oxidative stress responses. A future study will focus on a detailed analysis of key genes and the development of selection markers for the determination of drought-resistant varieties and the breeding of new resistant lineages.
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Affiliation(s)
- Kristýna Kundrátová
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic; (K.K.); (M.B.); (P.P.)
| | - Martin Bartas
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic; (K.K.); (M.B.); (P.P.)
| | - Petr Pečinka
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic; (K.K.); (M.B.); (P.P.)
| | - Ondřej Hejna
- Department of Genetics and Agricultural Biotechnology, Faculty of Agriculture, University of South Bohemia, Studentská 1668, 370 05 České Budějovice, Czech Republic;
| | - Andrea Rychlá
- Research Institute of Oilseed Crops, OSEVA PRO. Ltd., Purkyňova 10, 764 01 Opava, Czech Republic;
| | - Vladislav Čurn
- Department of Genetics and Agricultural Biotechnology, Faculty of Agriculture, University of South Bohemia, Studentská 1668, 370 05 České Budějovice, Czech Republic;
- Correspondence: (V.Č.); (J.Č.)
| | - Jiří Červeň
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic; (K.K.); (M.B.); (P.P.)
- Correspondence: (V.Č.); (J.Č.)
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Liu H, Li Y, Hu Y, Yang Y, Zhang W, He M, Li X, Zhang C, Kong F, Liu X, Hou X. EDS1-interacting J protein 1 is an essential negative regulator of plant innate immunity in Arabidopsis. THE PLANT CELL 2021; 33:153-171. [PMID: 33751092 PMCID: PMC8136891 DOI: 10.1093/plcell/koaa007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 10/23/2020] [Indexed: 05/13/2023]
Abstract
Plants have evolved precise mechanisms to optimize immune responses against pathogens. ENHANCED DISEASE SUSCEPTIBILITY 1 (EDS1) plays a vital role in plant innate immunity by regulating basal resistance and effector-triggered immunity. Nucleocytoplasmic trafficking of EDS1 is required for resistance reinforcement, but the molecular mechanism remains elusive. Here, we show that EDS1-INTERACTING J PROTEIN1 (EIJ1), which acts as a DnaJ protein-like chaperone in response to pathogen infection, functions as an essential negative regulator of plant immunity by interacting with EDS1. The loss-of-function mutation of EIJ1 did not affect plant growth but significantly enhanced pathogen resistance. Upon pathogen infection, EIJ1 relocalized from the chloroplast to the cytoplasm, where it interacted with EDS1, thereby restricting pathogen-triggered trafficking of EDS1 to the nucleus and compromising resistance at an early infection stage. During disease development, EIJ1 was gradually degraded, allowing the nuclear accumulation of EDS1 for transcriptional resistance reinforcement. The avirulent strain Pst DC3000 (AvrRps4) abolished the repressive action of EIJ1 by rapidly inducing its degradation in the effector-triggered immunity response. Thus, our findings show that EIJ1 is an essential EDS1-dependent negative regulator of innate plant immunity and provide a mechanistic understanding of how the nuclear versus cytoplasmic distribution of EDS1 is regulated during the immune response.
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Affiliation(s)
- Hailun Liu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Yuge Li
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Yilong Hu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Yuhua Yang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Wenbin Zhang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Ming He
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaoming Li
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Chunyu Zhang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Fanjiang Kong
- School of Life Sciences, Guangzhou University, Guangzhou 510006, China
| | - Xu Liu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, China
| | - Xingliang Hou
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, China
- Author for communication:
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22
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Gong C, Cheng MZ, Li JF, Chen HY, Zhang ZZ, Qi HN, Zhang Y, Liu J, Chen XL, Wang AX. The α-Subunit of the Chloroplast ATP Synthase of Tomato Reinforces Resistance to Gray Mold and Broad-Spectrum Resistance in Transgenic Tobacco. PHYTOPATHOLOGY 2021; 111:485-495. [PMID: 32772808 DOI: 10.1094/phyto-06-20-0242-r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Chloroplast ATP synthase (cpATPase) is responsible for ATP production during photosynthesis. Our previous studies showed that the cpATPase CF1 α subunit (AtpA) is a key protein involved in Clonostachys rosea-induced resistance to the fungus Botrytis cinerea in tomato. Here, we show that expression of the tomato atpA gene was upregulated by B. cinerea and Clonostachys rosea. The tomato atpA gene was then isolated, and transgenic tobacco lines were obtained. Compared with untransformed plants, atpA-overexpressing tobacco showed increased resistance to B. cinerea, characterized by reduced disease incidence, defense-associated hypersensitive response-like reactions, balanced reactive oxygen species, alleviated damage to the chloroplast ultrastructure of leaf cells, elevated levels of ATP content and cpATPase activity, and enhanced expression of genes related to carbon metabolism, photosynthesis, and defense. Incremental Ca2+ efflux and steady H+ efflux were observed in transgenic tobacco after inoculation with B. cinerea. In addition, overexpression of atpA conferred enhanced tolerance to salinity and resistance to the fungus Cladosporium fulvum. Thus, AtpA is a key regulator that links signaling to cellular redox homeostasis, ATP biosynthesis, and gene expression of resistance traits to modulate immunity to pathogen infection and provides broad-spectrum resistance in plants in the process.
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Affiliation(s)
- Chao Gong
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, People's Republic of China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, People's Republic of China
| | - Mo-Zhen Cheng
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Jing-Fu Li
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Hong-Yu Chen
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Zhen-Zhu Zhang
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, People's Republic of China
- College of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar 161006, People's Republic of China
| | - Hao-Nan Qi
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Yao Zhang
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Jiayin Liu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Xiu-Ling Chen
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Ao-Xue Wang
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, People's Republic of China
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, People's Republic of China
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23
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Li X, Wang J, Su M, Zhou J, Zhang M, Du J, Zhou H, Gan K, Jin J, Zhang X, Cao K, Fang W, Wang L, Jia H, Gao Z, Ye Z. Single Nucleotide Polymorphism Detection for Peach Gummosis Disease Resistance by Genome-Wide Association Study. FRONTIERS IN PLANT SCIENCE 2021; 12:763618. [PMID: 35197988 PMCID: PMC8858797 DOI: 10.3389/fpls.2021.763618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 12/28/2021] [Indexed: 05/05/2023]
Abstract
Peach gummosis is one of the most widespread and destructive diseases. It causes growth stunting, yield loss, branch, trunk, and tree death, and is becoming a restrictive factor in healthy and sustainable development of peach production. Although a locus has been identified based on bi-parental quantitative trait locus (QTL) mapping, selection of gummosis-resistant cultivars remains challenging due to the lack of resistant parents and of the complexity of an inducing factor. In this study, an integrated approach of genome-wide association study (GWAS) and comparative transcriptome was used to elucidate the genetic architecture associated with the disease using 195 accessions and 145,456 genome-wide single nucleotide polymorphisms (SNPs). The broad-sense and narrow-sense heritabilities were estimated using 2-year phenotypic data and genotypic data, which gave high values of 70 and 73%, respectively. Evaluation of population structure by neighbor-joining and principal components analysis (PCA) clustered all accessions into three major groups and six subgroups, mainly according to fruit shape, hairy vs. glabrous fruit skin, pedigree, geographic origin, and domestication history. Five SNPs were found to be significantly associated with gummosis disease resistance, of which SNPrs285957, located on chromosome6 across 28 Mb, was detected by both the BLINK and the FarmCPU model. Six candidate genes flanked by or harboring the significant SNPs, previously implicated in biotic stress tolerance, were significantly associated with this resistance. Two highly resistant accessions were identified with low disease severity, which could be potential sources of resistance genes for breeding. Our results provide a fresh insight into the genetic control of peach gummosis disease.
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Affiliation(s)
- Xiongwei Li
- Forest and Fruit Tree Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Jiabo Wang
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization (Southwest Minzu University), Ministry of Education, Chengdu, China
| | - Mingshen Su
- Forest and Fruit Tree Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Jingyi Zhou
- Horticultural Department, Shanghai Municipal Agricultural Technology Extension and Service Center, Shanghai, China
| | - Minghao Zhang
- Forest and Fruit Tree Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Jihong Du
- Forest and Fruit Tree Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Huijuan Zhou
- Forest and Fruit Tree Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Kexin Gan
- Key Laboratory for Horticultural Plant Growth, Department of Horticulture, Development and Quality Improvement of State Agriculture Ministry, Zhejiang University, Hangzhou, China
| | - Jing Jin
- Key Laboratory for Horticultural Plant Growth, Department of Horticulture, Development and Quality Improvement of State Agriculture Ministry, Zhejiang University, Hangzhou, China
| | - Xianan Zhang
- Forest and Fruit Tree Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Ke Cao
- Zhengzhou Fruit Research Institute, Chinese Academy of Agriculture Sciences, Zhengzhou, China
| | - Weichao Fang
- Zhengzhou Fruit Research Institute, Chinese Academy of Agriculture Sciences, Zhengzhou, China
| | - Lirong Wang
- Zhengzhou Fruit Research Institute, Chinese Academy of Agriculture Sciences, Zhengzhou, China
| | - Huijuan Jia
- Key Laboratory for Horticultural Plant Growth, Department of Horticulture, Development and Quality Improvement of State Agriculture Ministry, Zhejiang University, Hangzhou, China
| | - Zhongshan Gao
- Key Laboratory for Horticultural Plant Growth, Department of Horticulture, Development and Quality Improvement of State Agriculture Ministry, Zhejiang University, Hangzhou, China
- Zhongshan Gao,
| | - Zhengwen Ye
- Forest and Fruit Tree Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
- *Correspondence: Zhengwen Ye,
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24
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Molecular cloning, characterization and expression analysis of CbPLDδ gene from Chorispora bungeana in low temperature. Cryobiology 2020; 98:119-126. [PMID: 33290735 DOI: 10.1016/j.cryobiol.2020.11.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/30/2020] [Accepted: 11/24/2020] [Indexed: 11/21/2022]
Abstract
Chorispora bungeana (C. bungeana) is a rare alpine subnival species that is highly tolerant to low temperature stress. Phospholipase D (PLD) is a key enzyme involved in membrane phospholipid catabolism during plant growth and the stress response. In this study, one member of CbPLD gene family, CbPLDδ, was cloned from C. bungeana and was introduced into tobacco. This gene encodes an 864-amino acid protein with two catalytic HxKxxxxD motifs which are essential for phospholipase D activity. After the CbPLDδ gene is fused with the vector containing the GFP tag, subcellular localization showed that CbPLDδ was predominately located in the cell membrane. RT-qPCR and histochemical GUS assays showed that CbPLDδ gene was induced by low temperature and expressed predominantly in leaf and root. Compared with wild-type tobacco, CbPLDδ transgenic tobacco showed higher activities of antioxidant enzymes, and lower levels of malonidiadehyde and electrolyte leakage under low temperature stress. These results reflected that CbPLDδ is involved in the response to low temperature stress, and has the potential to improve the low temperature tolerance of plants.
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25
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Feng H, Li C, Zhou J, Yuan Y, Feng Z, Shi Y, Zhao L, Zhang Y, Wei F, Zhu H. A cotton WAKL protein interacted with a DnaJ protein and was involved in defense against Verticillium dahliae. Int J Biol Macromol 2020; 167:633-643. [PMID: 33275973 DOI: 10.1016/j.ijbiomac.2020.11.191] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 11/18/2020] [Accepted: 11/27/2020] [Indexed: 12/13/2022]
Abstract
Accumulating evidence indicates that plant cell wall-associated receptor-like kinases (WAKs) involve in defense against pathogen attack, but their related signaling processes and regulatory mechanism remain largely unknown. We identified a WAK-like kinase (GhWAKL) from upland cotton (Gossypium hirsutum) and characterized its functional mechanism. Expression of GhWAKL in cotton plants was induced by Verticillium dahliae infection and responded to the application of salicylic acid (SA). Knockdown of GhWAKL expression results in the reduction of SA content and suppresses the SA-mediated defense response, enhancing cotton plants susceptibility to V. dahliae. And, ecotopic overexpression of GhWAKL in Arabidopsis thaliana conferred plant resistance to the pathogen. Further analysis demonstrated that GhWAKL interacted with a cotton DnaJ protein (GhDNAJ1) on the cell membrane. Silencing GhDNAJ1 also enhanced cotton susceptibility to V. dahliae. Moreover, the mutation of GhWAKL at site Ser628 with the phosphorylation decreased the interaction with GhDNAJ1 and compromised the plant resistance to V. dahliae. We propose that GhWAKL is a potential molecular target for improving resistance to Verticillium wilt in cotton.
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Affiliation(s)
- Hongjie Feng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China; Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, Henan 450001, China; School of Agricultural Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Cheng Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Jinglong Zhou
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Yuan Yuan
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Zili Feng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Yongqiang Shi
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Lihong Zhao
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Yalin Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China
| | - Feng Wei
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China; Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, Henan 450001, China; School of Agricultural Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Heqin Zhu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China; Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, Henan 450001, China; School of Agricultural Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China.
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26
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Li J, Liu LN, Meng Q, Fan H, Sui N. The roles of chloroplast membrane lipids in abiotic stress responses. PLANT SIGNALING & BEHAVIOR 2020; 15:1807152. [PMID: 32815751 PMCID: PMC7588187 DOI: 10.1080/15592324.2020.1807152] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Plant chloroplasts have complex membrane systems. Among these, thylakoids serve as the sites for photosynthesis and photosynthesis-related adaptation. In addition to the photosynthetic membrane complexes and associated molecules, lipids in the thylakoid membranes, are predominantly composed of MGDG (monogalactosyldiacylglycerol), DGDG (digalactosyldiacylglycerol), SQDG (sulfoquinovosyldiacylglycerol) and PG (phosphatidylglycerol), play essential roles in shaping the thylakoid architecture, electron transfer, and photoregulation. In this review, we discuss the effect of abiotic stress on chloroplast structure, the changes in membrane lipid composition, and the degree of unsaturation of fatty acids. Advanced understanding of the mechanisms regulating chloroplast membrane lipids and unsaturated fatty acids in response to abiotic stresses is indispensable for improving plant resistance and may inform the strategies of crop breeding.
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Affiliation(s)
- Jinlu Li
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
| | - Lu-Ning Liu
- College of Marine Life Sciences and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
- Institute of Integrative Biology, University of Liverpool, Liverpool, UK
| | - Qingwei Meng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, China
| | - Hai Fan
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
- Hai Fan Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, Shandong 250014, China
| | - Na Sui
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, Shandong, China
- Institute of Integrative Biology, University of Liverpool, Liverpool, UK
- CONTACT Na Sui
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27
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Tsers I, Gorshkov V, Gogoleva N, Parfirova O, Petrova O, Gogolev Y. Plant Soft Rot Development and Regulation from the Viewpoint of Transcriptomic Profiling. PLANTS 2020; 9:plants9091176. [PMID: 32927917 PMCID: PMC7570247 DOI: 10.3390/plants9091176] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/05/2020] [Accepted: 09/07/2020] [Indexed: 02/07/2023]
Abstract
Soft rot caused by Pectobacterium species is a devastating plant disease poorly characterized in terms of host plant responses. In this study, changes in the transcriptome of tobacco plants after infection with Pectobacterium atrosepticum (Pba) were analyzed using RNA-Seq. To draw a comprehensive and nontrivially itemized picture of physiological events in Pba-infected plants and to reveal novel potential molecular "players" in plant-Pba interactions, an original functional gene classification was performed. The classifications present in various databases were merged, enriched by "missed" genes, and divided into subcategories. Particular changes in plant cell wall-related processes, perturbations in hormonal and other regulatory systems, and alterations in primary, secondary, and redox metabolism were elucidated in terms of gene expression. Special attention was paid to the prediction of transcription factors (TFs) involved in the disease's development. Herewith, gene expression was analyzed within the predicted TF regulons assembled at the whole-genome level based on the presence of particular cis-regulatory elements (CREs) in gene promoters. Several TFs, whose regulons were enriched by differentially expressed genes, were considered to be potential master regulators of Pba-induced plant responses. Differential regulation of genes belonging to a particular multigene family and encoding cognate proteins was explained by the presence/absence of the particular CRE in gene promoters.
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Affiliation(s)
- Ivan Tsers
- Laboratory of plant infectious diseases, Federal Research Center Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia;
| | - Vladimir Gorshkov
- Laboratory of plant infectious diseases, Federal Research Center Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia;
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia; (N.G.); (O.P.); (O.P.); (Y.G.)
- Correspondence:
| | - Natalia Gogoleva
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia; (N.G.); (O.P.); (O.P.); (Y.G.)
| | - Olga Parfirova
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia; (N.G.); (O.P.); (O.P.); (Y.G.)
| | - Olga Petrova
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia; (N.G.); (O.P.); (O.P.); (Y.G.)
| | - Yuri Gogolev
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia; (N.G.); (O.P.); (O.P.); (Y.G.)
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28
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Effect of Transgenesis on mRNA and miRNA Profiles in Cucumber Fruits Expressing Thaumatin II. Genes (Basel) 2020; 11:genes11030334. [PMID: 32245082 PMCID: PMC7140888 DOI: 10.3390/genes11030334] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/12/2020] [Accepted: 03/17/2020] [Indexed: 01/03/2023] Open
Abstract
Transgenic plants are commonly used in breeding programs because of the various features that can be introduced. However, unintended effects caused by genetic transformation are still a topic of concern. This makes research on the nutritional safety of transgenic crop plants extremely interesting. Cucumber (Cucumis sativus L.) is a crop that is grown worldwide. The aim of this study was to identify and characterize differentially expressed genes and regulatory miRNAs in transgenic cucumber fruits that contain the thaumatin II gene, which encodes the sweet-tasting protein thaumatin II, by NGS sequencing. We compared the fruit transcriptomes and miRNomes of three transgenic cucumber lines with wild-type cucumber. In total, we found 47 differentially expressed genes between control and all three transgenic lines. We performed the bioinformatic functional analysis and gene ontology classification. We also identified 12 differentially regulated miRNAs, from which three can influence the two targets (assigned as DEGs) in one of the studied transgenic lines (line 224). We found that the transformation of cucumber with thaumatin II and expression of the transgene had minimal impact on gene expression and epigenetic regulation by miRNA, in the cucumber fruits.
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29
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Luo Y, Fang B, Wang W, Yang Y, Rao L, Zhang C. Genome-wide analysis of the rice J-protein family: identification, genomic organization, and expression profiles under multiple stresses. 3 Biotech 2019; 9:358. [PMID: 31544012 PMCID: PMC6730974 DOI: 10.1007/s13205-019-1880-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 08/20/2019] [Indexed: 12/17/2022] Open
Abstract
J-proteins which function as molecular chaperone played critical roles in plant growth, development, and response to various environment stresses, but little was reported on this gene family in rice. Here, we identified 115 putative rice J-proteins and classified them into nine major clades (I–IX) according to their phylogenetic relationships. Gene-structure analysis revealed that each member of the same clade has same or similar exon–intron structure, and most rice J-protein genes of clade VII were intronless. Chromosomes mapping suggested that tandem duplication was occurred in evolution. Expression profile showed that the 61 rice J-protein genes were expressed in at least one tissue. The result implied that they could be involved in the process of rice growth and development. The RNA-sequencing data identified 96 differentially expressed genes, 59.38% (57/96), 67.71% (65/96), and 62.50% (60/96) genes were induced by heat stress, drought stress, and salt stress, respectively. The results indicated that J-protein genes could participated in rice response to different stresses. The findings in this study would provide a foundation for further analyzing the function of J-proteins in rice.
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Affiliation(s)
- Ying Luo
- College of Bioscience and Biotechnology, Hunan Agricultural University, 410125 Changsha, China
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou, China
| | - Baohua Fang
- College of Bioscience and Biotechnology, Hunan Agricultural University, 410125 Changsha, China
- Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley, Ministry of Agriculture, 410125 Changsha, China
| | - Weiping Wang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, 410125 Changsha, China
| | - Ying Yang
- College of Bioscience and Biotechnology, Hunan Agricultural University, 410125 Changsha, China
| | - Liqun Rao
- College of Bioscience and Biotechnology, Hunan Agricultural University, 410125 Changsha, China
| | - Chao Zhang
- College of Bioscience and Biotechnology, Hunan Agricultural University, 410125 Changsha, China
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, 410125 Changsha, China
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30
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Rippin M, Borchhardt N, Karsten U, Becker B. Cold Acclimation Improves the Desiccation Stress Resilience of Polar Strains of Klebsormidium (Streptophyta). Front Microbiol 2019; 10:1730. [PMID: 31447802 PMCID: PMC6691101 DOI: 10.3389/fmicb.2019.01730] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 07/12/2019] [Indexed: 11/13/2022] Open
Abstract
Biological soil crusts (BSCs) are complex communities of autotrophic, heterotrophic, and saprotrophic (micro)organisms. In the polar regions, these biocrust communities have essential ecological functions such as primary production, nitrogen fixation, and ecosystem engineering while coping with extreme environmental conditions (temperature, desiccation, and irradiation). The microalga Klebsormidium is commonly found in BSCs all across the globe. The ecophysiological resilience of various Klebsormidium species to desiccation and other stresses has been studied intensively. Here we present the results of transcriptomic analyses of two different Klebsormidium species, K. dissectum and K. flaccidum, isolated from Antarctic and Arctic BSCs. We performed desiccation stress experiments at two different temperatures mimicking fluctuations associated with global change. Cultures grown on agar plates were desiccated on membrane filters at 10% relative air humidity until the photosynthetic activity as reflected in the effective quantum yield of photosystem II [Y(II)] ceased. For both species, the response to dehydration was much faster at the higher temperature. At the transcriptome level both species responded more strongly to the desiccation stress at the higher temperature suggesting that adaptation to cold conditions enhanced the resilience of both algae to desiccation stress. Interestingly, the two different species responded differently to the applied desiccation stress with respect to the number as well as function of genes showing differential gene expression. The portion of differentially expressed genes shared between both taxa was surprisingly low indicating that both Klebsormidium species adapted independently to the harsh conditions of Antarctica and the Arctic, respectively. Overall, our results indicate that environmental acclimation has a great impact on gene expression and the response to desiccation stress in Klebsormidium.
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Affiliation(s)
- Martin Rippin
- Department of Biology, Botanical Institute, University of Cologne, Cologne, Germany
| | | | - Ulf Karsten
- Department of Biology, University of Rostock, Rostock, Germany
| | - Burkhard Becker
- Department of Biology, Botanical Institute, University of Cologne, Cologne, Germany
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Wei Q, Du L, Wang W, Hu T, Hu H, Wang J, David K, Bao C. Comparative Transcriptome Analysis in Eggplant Reveals Selection Trends during Eggplant Domestication. Int J Genomics 2019; 2019:7924383. [PMID: 31211132 PMCID: PMC6532321 DOI: 10.1155/2019/7924383] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 04/15/2019] [Indexed: 12/31/2022] Open
Abstract
Eggplant (Solanum melongena L.) is an economically and nutritionally important fruit crop of the Solanaceae family, which was domesticated in India and southern China. However, the genome regions subjected to selective sweeps in eggplant remain unknown. In the present study, we performed comparative transcriptome analysis of cultivated and wild eggplant species with emphasis on the selection pattern during domestication. In total, 44,073 (S. sisymbriifolium) to 58,677 (S. melongena cultivar S58) unigenes were generated for the six eggplant accessions with total lengths of 36.6-46 Mb. The orthologous genes were assessed using the ratio of nonsynonymous (K a) to synonymous (K s) nucleotide substitutions to characterize selective patterns during eggplant domestication. We identified 19 genes under positive selection across the phylogeny that were classified into four groups. The gene (OG12205) under positive selection was possibly associated with fruit-related traits in eggplant, which may have resulted from human manipulation. Eight positive selected genes were potentially involved in stress tolerance or disease resistance, suggesting that environmental changes and biotic stresses were important selective pressures in eggplant domestication. Taken together, our results shed light on the effects of artificial and natural selection on the transcriptomes of eggplant and its wild relatives. Identification of the selected genes will facilitate the understanding of genetic architecture of domesticated-related traits and provide resources for resistant breeding in eggplant.
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Affiliation(s)
- Qingzhen Wei
- Institute of Vegetable Research, Zhejiang Academy of Agricultural Sciences, Hangzhou 30021, China
| | - Liming Du
- Institute of Vegetable Research, Zhejiang Academy of Agricultural Sciences, Hangzhou 30021, China
| | - Wuhong Wang
- Institute of Vegetable Research, Zhejiang Academy of Agricultural Sciences, Hangzhou 30021, China
| | - Tianhua Hu
- Institute of Vegetable Research, Zhejiang Academy of Agricultural Sciences, Hangzhou 30021, China
| | - Haijiao Hu
- Institute of Vegetable Research, Zhejiang Academy of Agricultural Sciences, Hangzhou 30021, China
| | - Jinglei Wang
- Institute of Vegetable Research, Zhejiang Academy of Agricultural Sciences, Hangzhou 30021, China
| | - Karine David
- The University of Auckland, School of Biological Sciences, Private Bag 91019, Auckland 1010, New Zealand
| | - Chonglai Bao
- Institute of Vegetable Research, Zhejiang Academy of Agricultural Sciences, Hangzhou 30021, China
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Koech RK, Malebe PM, Nyarukowa C, Mose R, Kamunya SM, Joubert F, Apostolides Z. Functional annotation of putative QTL associated with black tea quality and drought tolerance traits. Sci Rep 2019; 9:1465. [PMID: 30728388 PMCID: PMC6365519 DOI: 10.1038/s41598-018-37688-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 12/12/2018] [Indexed: 12/12/2022] Open
Abstract
The understanding of black tea quality and percent relative water content (%RWC) traits in tea (Camellia sinensis) by a quantitative trait loci (QTL) approach can be useful in elucidation and identification of candidate genes underlying the QTL which has remained to be difficult. The objective of the study was to identify putative QTL controlling black tea quality and percent relative water traits in two tea populations and their F1 progeny. A total of 1,421 DArTseq markers derived from the linkage map identified 53 DArTseq markers to be linked to black tea quality and %RWC. All 53 DArTseq markers with unique best hits were identified in the tea genome. A total of 5,592 unigenes were assigned gene ontology (GO) terms, 56% comprised biological processes, cellular component (29%) and molecular functions (15%), respectively. A total of 84 unigenes in 15 LGs were assigned to 25 different Kyoto Encyclopedia of Genes and Genomes (KEGG) database pathways based on categories of secondary metabolite biosynthesis. The three major enzymes identified were transferases (38.9%), hydrolases (29%) and oxidoreductases (18.3%). The putative candidate proteins identified were involved in flavonoid biosynthesis, alkaloid biosynthesis, ATPase family proteins related to abiotic/biotic stress response. The functional annotation of putative QTL identified in this current study will shed more light on the proteins associated with caffeine and catechins biosynthesis and % RWC. This study may help breeders in selection of parents with desirable DArTseq markers for development of new tea cultivars with desirable traits.
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Affiliation(s)
- Robert K Koech
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, 0002, South Africa.,Kenya Agriculture and Livestock Research Organization, Tea Research Institute, P.O. Box 820, Kericho, 20200, Kenya
| | - Pelly M Malebe
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, 0002, South Africa
| | - Christopher Nyarukowa
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, 0002, South Africa
| | - Richard Mose
- James Finlay (Kenya) Limited, P.O. Box 223, Kericho, 20200, Kenya
| | - Samson M Kamunya
- Kenya Agriculture and Livestock Research Organization, Tea Research Institute, P.O. Box 820, Kericho, 20200, Kenya
| | - Fourie Joubert
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, 0002, South Africa
| | - Zeno Apostolides
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, 0002, South Africa.
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Novel DnaJ Protein Facilitates Thermotolerance of Transgenic Tomatoes. Int J Mol Sci 2019; 20:ijms20020367. [PMID: 30654548 PMCID: PMC6359579 DOI: 10.3390/ijms20020367] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/09/2019] [Accepted: 01/13/2019] [Indexed: 11/16/2022] Open
Abstract
DnaJ proteins, which are molecular chaperones that are widely present in plants, can respond to various environmental stresses. At present, the function of DnaJ proteins was studied in many plant species, but only a few studies were conducted in tomato. Here, we examined the functions of a novel tomato (Solanum lycopersicum) DnaJ protein (SlDnaJ20) in heat tolerance using sense and antisense transgenic tomatoes. Transient conversion assays of Arabidopsis protoplasts showed that SlDnaJ20 was targeted to chloroplasts. Expression analysis showed that SlDnaJ20 expression was induced by chilling, NaCl, polyethylene glycol, and H₂O₂, especially via heat stress. Under heat stress, sense plants showed higher fresh weights, chlorophyll content, fluorescence (Fv/Fm), and D1 protein levels, and a lower accumulation of reactive oxygen species (ROS) than antisense plants. These results suggest that SlDnaJ20 overexpression can reduce the photoinhibition of photosystem II (PSII) by relieving ROS accumulation. Moreover, higher expression levels of HsfA1 and HsfB1 were observed under heat stress in sense plants, indicating that SlDnaJ20 overexpression contributes to HSF expression. The yeast two-hybrid system proved that SlDnaJ20 can interact with the chloroplast heat-shock protein 70. Our results indicate that SlDnaJ20 overexpression enhances the thermotolerance of transgenic tomatoes, whereas suppression of SlDnaJ20 increases the heat sensitivity of transgenic tomatoes.
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Verma AK, Tamadaddi C, Tak Y, Lal SS, Cole SJ, Hines JK, Sahi C. The expanding world of plant J-domain proteins. CRITICAL REVIEWS IN PLANT SCIENCES 2019; 38:382-400. [PMID: 33223602 PMCID: PMC7678915 DOI: 10.1080/07352689.2019.1693716] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Plants maintain cellular proteostasis during different phases of growth and development despite a barrage of biotic and abiotic stressors in an ever-changing environment. This requires a collaborative effort of a cadre of molecular chaperones. Hsp70s and their obligate co-chaperones, J-domain proteins (JDPs), are arguably the most ubiquitous and formidable components of the cellular chaperone network, facilitating numerous and diverse cellular processes and allowing survival under a plethora of stressful conditions. JDPs are also among the most versatile chaperones. Compared to Hsp70s, the number of JDP-encoding genes has proliferated, suggesting the emergence of highly complex Hsp70-JDP networks, particularly in plants. Recent studies indicate that besides the increase in the number of JDP encoding genes; regulatory differences, neo- and sub-functionalization, and inter- and intra-class combinatorial interactions, is rapidly expanding the repertoire of Hsp70-JDP systems. This results in highly robust and functionally diverse chaperone networks in plants. Here, we review the current status of plant JDP research and discuss how the paradigm shift in the field can be exploited toward a better understanding of JDP function and evolution.
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Affiliation(s)
- Amit K. Verma
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Chetana Tamadaddi
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Yogesh Tak
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Silviya S. Lal
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Sierra J. Cole
- Department of Chemistry, Lafayette College, Easton, PA, USA
| | | | - Chandan Sahi
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal, India
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Wang Z, Xu W, Kang J, Li M, Huang J, Ke Q, Kim HS, Xu B, Kwak SS. Overexpression of alfalfa Orange gene in tobacco enhances carotenoid accumulation and tolerance to multiple abiotic stresses. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 130:613-622. [PMID: 30121513 DOI: 10.1016/j.plaphy.2018.08.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 05/22/2023]
Abstract
The multifunctional Orange (Or) protein plays crucial roles in carotenoid homeostasis, photosynthesis stabilization, and antioxidant activity in plants under various abiotic stress conditions. The Or gene has been cloned in several crops but not in alfalfa (Medicago sativa L.). Alfalfa is widely cultivated across the world; however, its cultivation is largely limited by various abiotic stresses, including drought. In this study, we isolated the Or gene from alfalfa (MsOr) cv. Xinjiang Daye. The amino acid sequence of the deduced MsOr protein revealed that the protein contained two trans-membrane domains and a DnaJ cysteine-rich zinc finger domain, and showed a high level of similarity with the Or protein of other plants species. The MsOr protein was localized in leaf chloroplasts of tobacco. The expression of MsOr was the highest in mature leaves and was significantly induced by abiotic stresses, especially drought. To perform functional analysis of the MsOr gene, we overexpressed MsOr gene in tobacco (Nicotiana benthamiana). Compared with wild-type (WT) plants, transgenic tobacco lines showed higher carotenoid accumulation and increased tolerance to various abiotic stresses, including drought, heat, salt, and methyl viologen-mediated oxidative stress. Additionally, contents of hydrogen peroxide and malondialdehyde were lower in the transgenic lines than in WT plants, suggesting superior membrane stability and antioxidant capacity of TOR lines under multiple abiotic stresses. These results indicate the MsOr gene as a potential target for the development of alfalfa cultivars with enhanced carotenoid content and tolerance to multiple environmental stresses.
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Affiliation(s)
- Zhi Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, Shaanxi, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, 712100, Shaanxi, China
| | - Weizhou Xu
- College of Life Science, Yulin University, Yulin, 719000, Shaanxi, China
| | - Jiyue Kang
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, 712100, Shaanxi, China
| | - Min Li
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, 712100, Shaanxi, China
| | - Jin Huang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, Shaanxi, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, 712100, Shaanxi, China
| | - Qingbo Ke
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, Shaanxi, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, 712100, Shaanxi, China
| | - Ho Soo Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Daejeon, 34141, South Korea
| | - Bingcheng Xu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, Shaanxi, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, 712100, Shaanxi, China
| | - Sang-Soo Kwak
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Daejeon, 34141, South Korea.
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Wang G, Zhou S, Luo Y, Ma C, Gong Y, Zhou Y, Gao S, Huang Z, Yan L, Hu Y, Bian Y. The heat shock protein 40 LeDnaJ regulates stress resistance and indole-3-acetic acid biosynthesis in Lentinula edodes. Fungal Genet Biol 2018; 118:37-44. [PMID: 30003956 DOI: 10.1016/j.fgb.2018.07.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 07/05/2018] [Accepted: 07/09/2018] [Indexed: 12/22/2022]
Abstract
DnaJ proteins, termed heat shock proteins based on their molecular weight, function as molecular chaperones that play critical roles in regulating organism growth and development as well as adaptation to the environment. However, little has been reported on their gene function in higher basidiomycetes. Here, the heat shock protein 40 (LeDnaJ) gene was cloned and characterized from Lentinula edodes. RNA interference was used to explore the function of LeDnaJ in response to heat stress and Trichoderma atroviride. Integration of the target gene into the L. edodes genome was confirmed by Southern blot analysis, and the silence efficiency of LeDnaJ was analyzed by qRT-PCR. The results revealed that LeDnaJ silence caused defects in mycelial growth and resistance to heat stress and T. atroviride, but increased the mycelial density compared with the wild type (WT) strain S606. Additionally, the IAA content showed a more than 10-fold increase in the WT after heat stress, but an about two-fold increase in the two LeDnaJ RNAi transfortants (LeDnaJ-i-6 and LeDnaJ-i-8). Previous study has shown that enhanced IAA (indole-3-acetic acid) content enhanced the thermotolerance of the heat-sensitive strain YS3357. In this study, it was documented that IAA amendments could partly restore the resistance to T. atroviride and thermotolerance of the two LeDnaJ RNAi transformants. Overall, LeDnaJ is nvolved in fungal growth, T. atroviride resistance, and thermotolerance by regulating the IAA biosynthesis in L. edodes.
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Affiliation(s)
- Gangzheng Wang
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - ShaSha Zhou
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Yi Luo
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Chaojun Ma
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Yuhua Gong
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Yan Zhou
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Shuangshuang Gao
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Zhicheng Huang
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Lianlian Yan
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Yue Hu
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Yinbing Bian
- Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Key Laboratory of Agro-Microbial Resource Comprehensive Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, China.
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Rampuria S, Bag P, Rogan CJ, Sharma A, Gassmann W, Kirti PB. Pathogen-induced AdDjSKI of the wild peanut, Arachis diogoi, potentiates tolerance of multiple stresses in E. coli and tobacco. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 272:62-74. [PMID: 29807607 DOI: 10.1016/j.plantsci.2018.03.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 03/25/2018] [Accepted: 03/31/2018] [Indexed: 06/08/2023]
Abstract
A gene encoding a serine-rich DnaJIII protein called AdDjSKI that has a 4Fe-4S cluster domain was found to be differentially upregulated in the wild peanut, Arachis diogoi in its resistance responses against the late leaf spot causing fungal pathogen Phaeoisariopsis personata when compared with the cultivated peanut, Arachis hypogaea. AdDjSKI is induced in multiple stress conditions in A. diogoi. Recombinant E. coli cells expressing AdDjSKI showed better growth kinetics when compared with vector control cells under salinity, osmotic, acidic and alkaline stress conditions. Overexpression of this type three J-protein potentiates not only abiotic stress tolerance in Nicotiana tabacum var. Samsun, but also enhances its disease resistance against the phytopathogenic fungi Phytophthora parasitica pv nicotianae and Sclerotinia sclerotiorum. In the present study we show transcriptional upregulation of APX, Mn-SOD and HSP70 under heat stress and increased transcripts of PR genes in response to fungal infection. This transmembrane-domain-containing J protein displays punctate localization in chloroplasts. AdDjSKI appears to ensure proper folding of proteins associated with the photosynthetic machinery under stress.
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Affiliation(s)
- Sakshi Rampuria
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Pushan Bag
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Conner J Rogan
- Division of Biological Sciences, Christopher S. Bond Life Sciences Center and Interdisciplinary Plant Group, University of Missouri, Columbia, MO, USA
| | - Akanksha Sharma
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Walter Gassmann
- Division of Plant Sciences, Christopher S. Bond Life Sciences Center and Interdisciplinary Plant Group, University of Missouri, Columbia, MO, USA
| | - P B Kirti
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India.
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Wang H, Zhao S, Mao K, Dong Q, Liang B, Li C, Wei Z, Li M, Ma F. Mapping QTLs for water-use efficiency reveals the potential candidate genes involved in regulating the trait in apple under drought stress. BMC PLANT BIOLOGY 2018; 18:136. [PMID: 29940853 PMCID: PMC6019725 DOI: 10.1186/s12870-018-1308-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 05/10/2018] [Indexed: 05/11/2023]
Abstract
BACKGROUND Improvement of water-use efficiency (WUE) can effectively reduce production losses caused by drought stress. A better understanding of the genetic determination of WUE in crops under drought stress has great potential value for developing cultivars adapted to arid regions. To identify the genetic loci associated with WUE and reveal genes responsible for the trait in apple, we aim to map the quantitative trait loci (QTLs) for carbon isotope composition, the proxy for WUE, applying two contrasting irrigating regimes over the two-year experiment and search for the candidate genes encompassed in the mapped QTLs. RESULTS We constructed a high-density genetic linkage map with 10,172 markers of apple, using single nucleotide polymorphism (SNP) markers obtained through restriction site-associated DNA sequencing (RADseq) and a final segregating population of 350 seedlings from the cross of Honeycrisp and Qinguan. In total, 33 QTLs were identified for carbon isotope composition in apple under both well-watered and drought-stressed conditions. Three QTLs were stable over 2 years under drought stress on linkage groups LG8, LG15 and LG16, as validated by Kompetitive Allele-Specific PCR (KASP) assays. In those validated QTLs, 258 genes were screened according to their Gene Ontology functional annotations. Among them, 28 genes were identified, which exhibited significant responses to drought stress in 'Honeycrisp' and/or 'Qinguan'. These genes are involved in signaling, photosynthesis, response to stresses, carbohydrate metabolism, protein metabolism and modification, hormone metabolism and transport, transport, respiration, transcriptional regulation, and development regulation. They, especially those for photoprotection and relevant signal transduction, are potential candidate genes connected with WUE regulation in drought-stressed apple. CONCLUSIONS We detected three stable QTLs for carbon isotope composition in apple under drought stress over 2 years, and validated them by KASP assay. Twenty-eight candidate genes encompassed in these QTLs were identified. These stable genetic loci and series of genes provided here serve as a foundation for further studies on marker-assisted selection of high WUE and regulatory mechanism of WUE in apple exposed to drought conditions, respectively.
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Affiliation(s)
- Haibo Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Shuang Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Ke Mao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Qinglong Dong
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Bowen Liang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Chao Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Zhiwei Wei
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Mingjun Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi China
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Zhang B, Qiu HL, Qu DH, Ruan Y, Chen DH. Phylogeny-dominant classification of J-proteins in Arabidopsis thaliana and Brassica oleracea. Genome 2018; 61:405-415. [PMID: 29620479 DOI: 10.1139/gen-2017-0206] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hsp40s or DnaJ/J-proteins are evolutionarily conserved in all organisms as co-chaperones of molecular chaperone HSP70s that mainly participate in maintaining cellular protein homeostasis, such as protein folding, assembly, stabilization, and translocation under normal conditions as well as refolding and degradation under environmental stresses. It has been reported that Arabidopsis J-proteins are classified into four classes (types A-D) according to domain organization, but their phylogenetic relationships are unknown. Here, we identified 129 J-proteins in the world-wide popular vegetable Brassica oleracea, a close relative of the model plant Arabidopsis, and also revised the information of Arabidopsis J-proteins based on the latest online bioresources. According to phylogenetic analysis with domain organization and gene structure as references, the J-proteins from Arabidopsis and B. oleracea were classified into 15 main clades (I-XV) separated by a number of undefined small branches with remote relationship. Based on the number of members, they respectively belong to multigene clades, oligo-gene clades, and mono-gene clades. The J-protein genes from different clades may function together or separately to constitute a complicated regulatory network. This study provides a constructive viewpoint for J-protein classification and an informative platform for further functional dissection and resistant genes discovery related to genetic improvement of crop plants.
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Affiliation(s)
- Bin Zhang
- a Key Laboratory of Education, Department of Hunan Province on Plant Genetics and Molecular Biology, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Han-Lin Qiu
- b State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, Zhejiang 311300, China
| | - Dong-Hai Qu
- a Key Laboratory of Education, Department of Hunan Province on Plant Genetics and Molecular Biology, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Ying Ruan
- a Key Laboratory of Education, Department of Hunan Province on Plant Genetics and Molecular Biology, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Dong-Hong Chen
- b State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, Zhejiang 311300, China
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40
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Zhong X, Yang J, Shi Y, Wang X, Wang G. The DnaJ protein OsDjA6 negatively regulates rice innate immunity to the blast fungus Magnaporthe oryzae. MOLECULAR PLANT PATHOLOGY 2018; 19:607-614. [PMID: 28220688 PMCID: PMC6638105 DOI: 10.1111/mpp.12546] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 02/13/2017] [Accepted: 02/17/2017] [Indexed: 05/22/2023]
Abstract
Rice blast, caused by Magnaporthe oryzae (synonym: Pyricularia oryzae), severely reduces rice production and grain quality. The molecular mechanism of rice resistance to M. oryzae is not fully understood. In this study, we identified a chaperone DnaJ protein, OsDjA6, which is involved in basal resistance to M. oryzae in rice. The OsDjA6 protein is distributed in the entire rice cell. The expression of OsDjA6 is significantly induced in rice after infection with a compatible isolate. Silencing of OsDjA6 in transgenic rice enhances resistance to M. oryzae and also results in an increased burst of reactive oxygen species after flg22 and chitin treatments. In addition, the expression levels of WRKY45, NPR1 and PR5 are increased in OsDjA6 RNAi plants, indicating that OsDjA6 may mediate resistance by affecting the salicylic acid pathway. Finally, we found that OsDjA6 interacts directly with the E3 ligase OsZFP1 in vitro and in vivo. These results suggest that the DnaJ protein OsDjA6 negatively regulates rice innate immunity, probably via the ubiquitination proteasome degradation pathway.
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Affiliation(s)
- Xionghui Zhong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing100193China
| | - Jiuxia Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing100193China
| | - Yanlong Shi
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing100193China
| | - Xuli Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing100193China
| | - Guo‐Liang Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing100193China
- Department of Plant PathologyOhio State UniversityColumbusOH43210USA
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Ma X, Chen C, Yang M, Dong X, Lv W, Meng Q. Cold-regulated protein (SlCOR413IM1) confers chilling stress tolerance in tomato plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 124:29-39. [PMID: 29331923 DOI: 10.1016/j.plaphy.2018.01.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 12/18/2017] [Accepted: 01/04/2018] [Indexed: 05/25/2023]
Abstract
Chilling stress severely affects the growth, development and productivity of crops. Chloroplast, a photosynthesis site, is extremely sensitive to chilling stress. In this study, the functions of a gene encoding a cold-regulated protein (SlCOR413IM1) under chilling stress were investigated using sense and antisense transgenic tomatoes. Under chilling stress, SlCOR413IM1 expression was rapidly induced and the sense lines exhibited better growth state of seedlings and grown tomato plants. Overexpression of SlCOR413IM1 alleviated chilling-induced damage to the chloroplast membrane and structure, whereas suppression of SlCOR413IM1 aggravated the damage to chloroplast. Moreover, the net photosynthetic rate (Pn), maximum photochemical efficiency of photosystem II (PSII) (Fv/Fm), actual photochemical efficiency of PSII (ΦPSII) and the activities of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and stromal fructose-1, 6-bisphosphatase (sFBPase) were higher in the sense lines than those in the antisense lines. Hence, the inhibition of photosynthetic capacity was less severe in the sense lines but more severe in the antisense lines compared with that in wild-type (WT) plants. Taken together, overexpression of SlCOR413IM1 enhanced the chilling stress tolerance, whereas suppression of this gene increased the chilling sensitivity of tomato plants.
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Affiliation(s)
- Xiaocui Ma
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Chong Chen
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Minmin Yang
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Xinchun Dong
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Wei Lv
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
| | - Qingwei Meng
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
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Lee KW, Rahman MA, Kim KY, Choi GJ, Cha JY, Cheong MS, Shohael AM, Jones C, Lee SH. Overexpression of the alfalfa DnaJ-like protein (MsDJLP) gene enhances tolerance to chilling and heat stresses in transgenic tobacco plants. Turk J Biol 2018; 42:12-22. [PMID: 30814866 DOI: 10.3906/biy-1705-30] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Heat shock proteins (HSPs) are generally considered as important molecular chaperones; they are known to perform critical functions in plant development and abiotic stress response processes. In this study, we examined the role of a HSP, the Medicago sativa DnaJ-like protein (MsDJLP), in alfalfa and its potential application for the development of abiotic stress tolerance in plants. We found that expression of the MsDJLP gene was induced by chilling (4 °C) and heat (42 °C), but not by cadmium (500 µM) or arsenic (500 µM) stresses. We then cloned the MsDJLP gene downstream of the strong constitutive CaMV 35S promoter and transformed it into tobacco plants. Ectopic expression of MsDJLP conferred enhanced tolerance to both chilling and heat stresses in transgenic tobacco plants. Under chilling stress, the transgenic tobacco plants showed lower H2O2 accumulation and electrolyte leakage (EL) activity, and better photosystem II efficiency than wild-type (WT) plants, indicating that photoinhibition was less severe in transgenic compared to WT plants. Following heat treatment, the transgenic plants showed better relative chlorophyll and water contents, and lower malondialdehyde accumulation than WT plants. Our study provides evidence for a pivotal role of MsDJLP for chilling and heat stress tolerance in transgenic tobacco plants.
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Affiliation(s)
- Ki-Won Lee
- Molecular Breeding Laboratory, Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration , Cheonan , Republic of Korea
| | - Md Atikur Rahman
- Molecular Breeding Laboratory, Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration , Cheonan , Republic of Korea
| | - Ki-Yong Kim
- Molecular Breeding Laboratory, Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration , Cheonan , Republic of Korea
| | - Gi Jun Choi
- Molecular Breeding Laboratory, Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration , Cheonan , Republic of Korea
| | - Joon-Yung Cha
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University , Jinju , Republic of Korea
| | - Mi Sun Cheong
- Division of Applied Life Science (BK21Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University , Jinju , Republic of Korea
| | | | - Chris Jones
- Feed and Forage Biosciences, International Livestock Research Institute , Addis Ababa , Ethiopia
| | - Sang-Hoon Lee
- Molecular Breeding Laboratory, Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration , Cheonan , Republic of Korea
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Lopes KL, Rodrigues RAO, Silva MC, Braga WGS, Silva-Filho MC. The Zinc-Finger Thylakoid-Membrane Protein FIP Is Involved With Abiotic Stress Response in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2018; 9:504. [PMID: 29720990 PMCID: PMC5915565 DOI: 10.3389/fpls.2018.00504] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 04/03/2018] [Indexed: 05/15/2023]
Abstract
Many plant genes have their expression modulated by stress conditions. Here, we used Arabidopsis FtsH5 protease, which expression is regulated by light stress, as bait in a yeast two-hybrid screen to search for new proteins involved in the stress response. As a result, we found FIP (FtsH5 Interacting Protein), which possesses an amino proximal cleavable transit peptide, a hydrophobic membrane-anchoring region, and a carboxyl proximal C4-type zinc-finger domain. In vivo experiments using FIP fused to green fluorescent protein (GFP) showed a plastid localization. This finding was corroborated by chloroplast import assays that showed FIP inserted in the thylakoid membrane. FIP expression was down-regulated in plants exposed to high light intensity, oxidative, salt, and osmotic stresses, whereas mutant plants expressing low levels of FIP were more tolerant to these abiotic stresses. Our data shows a new thylakoid-membrane protein involved with abiotic stress response in Arabidopsis thaliana.
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Rippin M, Becker B, Holzinger A. Enhanced Desiccation Tolerance in Mature Cultures of the Streptophytic Green Alga Zygnema circumcarinatum Revealed by Transcriptomics. PLANT & CELL PHYSIOLOGY 2017; 58:2067-2084. [PMID: 29036673 PMCID: PMC5722205 DOI: 10.1093/pcp/pcx136] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 09/05/2017] [Indexed: 05/20/2023]
Abstract
Desiccation tolerance is commonly regarded as one of the key features for the colonization of terrestrial habitats by green algae and the evolution of land plants. Extensive studies, focused mostly on physiology, have been carried out assessing the desiccation tolerance and resilience of the streptophytic genera Klebsormidium and Zygnema. Here we present transcriptomic analyses of Zygnema circumcarinatum exposed to desiccation stress. Cultures of Z. circumcarinatum grown in liquid medium or on agar plates were desiccated at ∼86% relative air humidity until the effective quantum yield of PSII [Y(II)] ceased. In general, the response to dehydration was much more pronounced in Z. circumcarinatum cultured in liquid medium for 1 month compared with filaments grown on agar plates for 7 and 12 months. Culture on solid medium enables the alga to acclimate to dehydration much better and an increase in desiccation tolerance was clearly correlated to increased culture age. Moreover, gene expression analysis revealed that photosynthesis was strongly repressed upon desiccation treatment in the liquid culture while only minor effects were detected in filaments cultured on agar plates for 7 months. Otherwise, both samples showed induction of stress protection mechanisms such as reactive oxygen species scavenging (early light-induced proteins, glutathione metabolism) and DNA repair as well as the expression of chaperones and aquaporins. Additionally, Z. circumcarinatum cultured in liquid medium upregulated sucrose-synthesizing enzymes and strongly induced membrane modifications in response to desiccation stress. These results corroborate the previously described hardening and associated desiccation tolerance in Zygnema in response to seasonal fluctuations in water availability.
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Affiliation(s)
- Martin Rippin
- University of Cologne, Cologne Biocentre, Botanical Institute, Zülpicher Str. 47b, 50674, Cologne, Germany
| | - Burkhard Becker
- University of Cologne, Cologne Biocentre, Botanical Institute, Zülpicher Str. 47b, 50674, Cologne, Germany
| | - Andreas Holzinger
- University of Innsbruck, Department of Botany, Functional Plant Biology, Sternwartestrasse 15, 6020 Innsbruck, Austria
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Identification of Genes Involved in the Responses of Tangor (C. reticulata × C. sinensis) to Drought Stress. BIOMED RESEARCH INTERNATIONAL 2017; 2017:8068725. [PMID: 29085842 PMCID: PMC5612316 DOI: 10.1155/2017/8068725] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 07/31/2017] [Indexed: 12/22/2022]
Abstract
Drought is the major abiotic stress with adverse effects on citrus, decreasing the agronomical yield and influencing the fruit quality. In this study, cDNA-amplified fragment length polymorphism (cDNA-AFLP) technique was used to investigate the transcriptional profile changes and identify drought-responsive genes in “Amakusa” tangor (C. reticulata × C. sinensis), a hybrid citrus sensitive to water stress. The 255 out of 6,245 transcript-derived fragments (TDFs) displayed altered expression patterns including (A) induction, (B) repression, (C) upregulation, and (D) downregulation. With BLAST search, the gene products of differentially expressed fragments (DEFs) could be classified into several categories: cellular processes, transcription, transport, metabolism, stress/stimuli response, and developmental processes. Downregulated genes were highly represented by photosynthesis and basic metabolism, while upregulated ones were enriched in genes that were involved in transcription regulation, defense, energy, and transport. Present result also revealed some transient and up- and then downregulated genes such as aquaporin protein and photosystem enzyme. Expression patterns of 17 TDFs among 18 homologous to function-known genes were confirmed by qRT-PCR analysis. The present results revealed potential mechanism of drought tolerance in fruit crop and also provided candidate genes for future experiments in citrus.
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Gu X, Gao Z, Yan Y, Wang X, Qiao Y, Chen Y. RdreB1BI enhances drought tolerance by activating AQP-related genes in transgenic strawberry. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 119:33-42. [PMID: 28843134 DOI: 10.1016/j.plaphy.2017.08.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 08/13/2017] [Accepted: 08/16/2017] [Indexed: 05/08/2023]
Abstract
The dehydration-responsive element binding protein (DREB) family of transcription factors is associated with abiotic stress responses during plant growth and development. This study focussed on the subfamily member DREB1B, which was initially described as highly and specifically responsive to low temperature. However, here it is shown that DREB1B is not only involved in cold tolerance but also other abiotic stress tolerances, such as that of drought. To further understand the genetic improvement effects of the drought tolerance provided by RdreB1BI in transgenic strawberry, drought stress responses of transgenic plants were evaluated at the morphological, physiological, and transcriptional levels. Transactivation assays revealed that RdreB1BI could activate the FvPIP2;1 like 1 promoter. RdreB1BI transgenic plants showed enhanced drought tolerance on the basis of lower rates of electrolyte leakage (EL), higher relative water content (RWC), and less stomatal aperture as well as increased peroxidase (POD) and superoxide dismutase (SOD) activities and less malondialdehyde (MDA) accumulation. The transgenic plants also accumulated higher levels of drought-related regulatory genes and functional gene transcripts, including those of PIP, NAC, RD22, ABI, and NCED. Together, these results demonstrate that RdreB1BI plays an essential role in the regulation of the drought stress response. DREB1B transcription constitutes a useful strategy to exploit in transgenic plants for coping with abiotic stresses, at least cold and drought stresses. The approach may be helpful for genetic engineering horticultural plants to have increased environmental adaptations.
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Affiliation(s)
- Xianbin Gu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, People's Republic of China; College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, People's Republic of China; Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, People's Republic of China
| | - Zhihong Gao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, People's Republic of China.
| | - Yichao Yan
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Xiuyun Wang
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Yushan Qiao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Yahua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, People's Republic of China.
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47
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Ma X, Wang G, Zhao W, Yang M, Ma N, Kong F, Dong X, Meng Q. SlCOR413IM1: A novel cold-regulation gene from tomato, enhances drought stress tolerance in tobacco. JOURNAL OF PLANT PHYSIOLOGY 2017; 216:88-99. [PMID: 28582694 DOI: 10.1016/j.jplph.2017.03.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 03/23/2017] [Accepted: 03/24/2017] [Indexed: 05/25/2023]
Abstract
Drought stress adversely affects plant growth, development, and productivity. Genes functioning in plant response to drought stress are essential for drought tolerance. In this study, SlCOR413IM1, a cold-regulated gene isolated from Solanum lycopersium, was transferred to Nicotiana tabacum to investigate its function under drought stress. The subcellular localisation of SlCOR413IM1-GFP fusion protein in Arabidopsis protoplasts suggested that SlCOR413IM1 is a chloroplast protein. Expression analyses revealed that SlCOR413IM1 responded to drought and cold stresses. Under drought stress, transgenic plants maintained the high maximum photochemical efficiency, net photosynthetic rate (Pn) and D1 protein content of photosystem II (PSII). Compared with wild-type (WT) plants, transgenic plants showed higher superoxide dismutase (SOD) and ascorbate peroxidase (APX) activities and proline and soluble sugar content, which reduced reactive oxygen species (ROS) generation. However, the high SOD and APX activities in transgenic plants were independent of their transcription levels. Moreover, the transgenic plants exhibited better seed germination, water status and survival, as well as lower malondialdehyde (MDA) content and relative electrical conductivity (REC) than WT plants under drought stress. Taken together, these data demonstrated that overexpression of SlCOR413IM1 enhanced drought stress tolerance in transgenic tobacco.
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Affiliation(s)
- Xiaocui Ma
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Guodong Wang
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; College of Biological Science, Jining Medical University, Rizhao, Shandong 276800, PR China
| | - Weiyang Zhao
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Minmin Yang
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Nana Ma
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Fanying Kong
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Xinchun Dong
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
| | - Qingwei Meng
- College of Life Science, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
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48
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Fan F, Yang X, Cheng Y, Kang Y, Chai X. The DnaJ Gene Family in Pepper ( Capsicum annuum L.): Comprehensive Identification, Characterization and Expression Profiles. FRONTIERS IN PLANT SCIENCE 2017; 8:689. [PMID: 28507559 PMCID: PMC5410566 DOI: 10.3389/fpls.2017.00689] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 04/13/2017] [Indexed: 05/24/2023]
Abstract
The DnaJ proteins which function as molecular chaperone played critical roles in plant growth and development and response to heat stress (HS) and also called heat shock protein 40 based on molecular weight. However, little was reported on this gene family in pepper. Recently, the release of the whole pepper genome provided an opportunity for identifying putative DnaJ homologous. In this study, a total of 76 putative pepper DnaJ genes (CaDnaJ01 to CaDnaJ76) were identified using bioinformatics methods and classified into five groups by the presence of the complete three domains (J-domain, zinc finger domain, and C-terminal domain). Chromosome mapping suggested that segmental duplication and tandem duplication were occurred in evolution. The multiple stress-related cis-elements were found in the promoter region of these CaDnaJ genes, which indicated that the CaDnaJs might be involved in the process of responding to complex stress conditions. In addition, expression profiles based on RNA-seq showed that the 47 CaDnaJs were expressed in at least one tissue tested. The result implied that they could be involved in the process of pepper growth and development. qRT-PCR analysis found that 80.60% (54/67) CaDnaJs were induced by HS, indicated that they could participated in pepper response to high temperature treatments. In conclusion, all these results would provide a comprehensive basis for further analyzing the function of CaDnaJ members and be also significant for elucidating the evolutionary relationship in pepper.
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Affiliation(s)
- FangFei Fan
- College of Horticulture, South China Agricultural UniversityGuangzhou, China
| | - Xian Yang
- College of Horticulture, South China Agricultural UniversityGuangzhou, China
| | - Yuan Cheng
- State key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Vegetables, Zhejiang Academy of Agricultural SciencesHangzhou, China
| | - Yunyan Kang
- College of Horticulture, South China Agricultural UniversityGuangzhou, China
| | - Xirong Chai
- College of Horticulture, South China Agricultural UniversityGuangzhou, China
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49
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Yang DY, Li M, Ma NN, Yang XH, Meng QW. Tomato SlGGP-LIKE gene participates in plant responses to chilling stress and pathogenic infection. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 112:218-226. [PMID: 28092850 DOI: 10.1016/j.plaphy.2017.01.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 12/05/2016] [Accepted: 01/06/2017] [Indexed: 06/06/2023]
Abstract
Plants are always exposed to abiotic and biotic stresses which can adversely affect their growth and development. As an important antioxidant, AsA plays a vital role in plant defence against damage caused by stresses. In this study, we cloned a tomato GDP-L-galactose phosphorylase-like (SlGGP-LIKE) gene and investigated its role in resistance to abiotic and biotic stresses by using antisense transgenic (AS) tomato lines. The AsA content in AS plants was lower than that in WT plants. Under chilling stress, the growth of AS plants was inhibited significantly, and they yielded higher levels of ROS, REC and MDA but demonstrated weaker APX activity than that shown by WT plants. Additionally, the declined values of Pn, Fv/Fm, oxidisable P700, and D1 protein content of PSII in AS lines were significant. Furthermore, the effect on xanthophyll cycle of AS plants was more severe than that on WT plants, and the ratio of zeaxanthin (Z)/(V + A + Z) and (Z + 0.5 A)/(V + A + Z) in AS lines was lower than that in WT plants. In spite of chilling stress, under Pseudomonas syringae pv.tomato (Pst) DC3000 strain infection, AS plants showed lesser bacterial cell growth and dead cells than those shown by WT plants. This finding indicated that AS plants demonstrated stronger resistance against pathogenic infection. Results suggest that SlGGP-LIKE gene played an important role in plant defence against chilling stress and pathogenic infection.
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Affiliation(s)
- Dong-Yue Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, 61 Dai Zong Street, Tai'an, Shandong 271018, China
| | - Meng Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, 61 Dai Zong Street, Tai'an, Shandong 271018, China
| | - Na-Na Ma
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, 61 Dai Zong Street, Tai'an, Shandong 271018, China
| | - Xing-Hong Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, 61 Dai Zong Street, Tai'an, Shandong 271018, China.
| | - Qing-Wei Meng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, 61 Dai Zong Street, Tai'an, Shandong 271018, China.
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50
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Muñoz-Nortes T, Pérez-Pérez JM, Ponce MR, Candela H, Micol JL. The ANGULATA7 gene encodes a DnaJ-like zinc finger-domain protein involved in chloroplast function and leaf development in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 89:870-884. [PMID: 28008672 DOI: 10.1111/tpj.13466] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 12/16/2016] [Accepted: 12/19/2016] [Indexed: 06/06/2023]
Abstract
The characterization of mutants with altered leaf shape and pigmentation has previously allowed the identification of nuclear genes that encode plastid-localized proteins that perform essential functions in leaf growth and development. A large-scale screen previously allowed us to isolate ethyl methanesulfonate-induced mutants with small rosettes and pale green leaves with prominent marginal teeth, which were assigned to a phenotypic class that we dubbed Angulata. The molecular characterization of the 12 genes assigned to this phenotypic class should help us to advance our understanding of the still poorly understood relationship between chloroplast biogenesis and leaf morphogenesis. In this article, we report the phenotypic and molecular characterization of the angulata7-1 (anu7-1) mutant of Arabidopsis thaliana, which we found to be a hypomorphic allele of the EMB2737 gene, which was previously known only for its embryonic-lethal mutations. ANU7 encodes a plant-specific protein that contains a domain similar to the central cysteine-rich domain of DnaJ proteins. The observed genetic interaction of anu7-1 with a loss-of-function allele of GENOMES UNCOUPLED1 suggests that the anu7-1 mutation triggers a retrograde signal that leads to changes in the expression of many genes that normally function in the chloroplasts. Many such genes are expressed at higher levels in anu7-1 rosettes, with a significant overrepresentation of those required for the expression of plastid genome genes. Like in other mutants with altered expression of plastid-encoded genes, we found that anu7-1 exhibits defects in the arrangement of thylakoidal membranes, which appear locally unappressed.
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Affiliation(s)
- Tamara Muñoz-Nortes
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, Elche, 03202, Spain
| | - José Manuel Pérez-Pérez
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, Elche, 03202, Spain
| | - María Rosa Ponce
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, Elche, 03202, Spain
| | - Héctor Candela
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, Elche, 03202, Spain
| | - José Luis Micol
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, Elche, 03202, Spain
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