1
|
Li W, Li P, Deng Y, Situ J, He Z, Zhou W, Li M, Xi P, Liang X, Kong G, Jiang Z. A plant cell death-inducing protein from litchi interacts with Peronophythora litchii pectate lyase and enhances plant resistance. Nat Commun 2024; 15:22. [PMID: 38167822 PMCID: PMC10761943 DOI: 10.1038/s41467-023-44356-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024] Open
Abstract
Cell wall degrading enzymes, including pectate lyases (PeLs), released by plant pathogens, break down protective barriers and/or activate host immunity. The direct interactions between PeLs and plant immune-related proteins remain unclear. We identify two PeLs, PlPeL1 and PlPeL1-like, critical for full virulence of Peronophythora litchii on litchi (Litchi chinensis). These proteins enhance plant susceptibility to oomycete pathogens in a PeL enzymatic activity-dependent manner. However, LcPIP1, a plant immune regulator secreted by litchi, binds to PlPeL1/PlPeL1-like, and attenuates PlPeL1/PlPeL1-like induced plant susceptibility to Phytophthora capsici. LcPIP1 also induces cell death and various immune responses in Nicotiana benthamiana. Conserved in plants, LcPIP1 homologs bear a conserved "VDMASG" motif and exhibit immunity-inducing activity. Furthermore, SERK3 interacts with LcPIP1 and is required for LcPIP1-induced cell death. NbPIP1 participates in immune responses triggered by the PAMP protein INF1. In summary, our study reveals the dual roles of PlPeL1/PlPeL1-like in plant-pathogen interactions: enhancing pathogen virulence through PeL enzymatic activity while also being targeted by LcPIP1, thus enhancing plant immunity.
Collapse
Affiliation(s)
- Wen Li
- National Key Laboratory of Green Pesticide/Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Peng Li
- National Key Laboratory of Green Pesticide/Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Yizhen Deng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources/Integrative Microbiology Research Center, South China Agricultural University, Guangzhou, China
| | - Junjian Situ
- National Key Laboratory of Green Pesticide/Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Zhuoyuan He
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources/College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Wenzhe Zhou
- National Key Laboratory of Green Pesticide/Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Minhui Li
- National Key Laboratory of Green Pesticide/Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Pinggen Xi
- National Key Laboratory of Green Pesticide/Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China
| | - Xiangxiu Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources/College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Guanghui Kong
- National Key Laboratory of Green Pesticide/Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China.
| | - Zide Jiang
- National Key Laboratory of Green Pesticide/Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China.
| |
Collapse
|
2
|
Qin Y, Zhao J, Wang J, Ye X, Zhou C, Zhou Y. Regulation of Nicotiana benthamiana cell death induced by citrus chlorotic dwarf-associated virus-RepA protein by WRKY 1. FRONTIERS IN PLANT SCIENCE 2023; 14:1164416. [PMID: 37180388 PMCID: PMC10167294 DOI: 10.3389/fpls.2023.1164416] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 04/10/2023] [Indexed: 05/16/2023]
Abstract
Citrus chlorotic dwarf-associated virus (CCDaV) is a Citlodavirus species in the Geminiviridae family that causes tremendous economic loss to the citrus industry in China. Some proteins encoded by geminiviruses are crucial for the interaction between the virus and its host plant. However, the exact functions of CCDaV-encoded proteins such as CCDaV-RepA have not been investigated. This study presents evidence that CCDaV-RepA elicits a hypersensitive response (HR)-like cell death in Nicotiana benthamiana that was accompanied by the production of H2O2 and ion leakage, which suggested that CCDaV-RepA is a potential recognition target for inducing host defense responses. Furthermore, the rolling-circle replication motifs of CCDaV-RepA are associated with triggering HR-like cell death in N. benthamiana. Confocal microscopy and deletion mutagenesis assays showed that CCDaV-RepA was located in the nucleus, while the first eight amino acids (aa) at the N terminus and two regions located between aa residues 122-263 and 220-264 of RepA were not associated with nuclear localization. Tobacco rattle virus-induced gene silencing of the key signaling cascade components revealed that HR-like cell death induced by RepA was inhibited in WRKY1-silenced N. benthamiana. Moreover, WRKY1 expression was upregulated in RepA-GFP infiltrated Overall, the results suggest that NbWRKY1 positively regulated CCDaV-RepA -induced cell death in N. benthamiana. These findings provide novel information for further research on the interactions between CCDaV and the host plant.
Collapse
Affiliation(s)
| | | | | | | | | | - Yan Zhou
- National Citrus Engineering Research Center, Citrus Research Institute, Southwest University, Chongqing, China
| |
Collapse
|
3
|
Hong JE, Hossain MR, Jung HJ, Nou IS. QTL associated with Gummy Stem Blight (GSB) resistance in watermelon. BMC Genomics 2022; 23:632. [PMID: 36057546 PMCID: PMC9441027 DOI: 10.1186/s12864-022-08849-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 08/16/2022] [Indexed: 12/03/2022] Open
Abstract
Background Gummy stem blight (GSB), caused by Didymella bryoniae (syn. Stagonosporopsis cucurbitacearum), produces devastating symptoms on whole plants of watermelon (Citrullus lanatus) and other cucurbits, significantly reducing yield and quality. Identification of genetic determinants and sources of resistance to this devastating GSB disease in watermelon is essential for developing resistant varieties. Results In this study, we aimed at identifying quantitative trait loci (QTLs) linked to GSB resistance in melon. We identified the genome-wide single nucleotide polymorphisms (SNPs) by genotyping by sequencing (GBS) of an F2 population developed from C. lanatus lines, ‘PI 279461’ (resistant) ✕ ‘PI 223764’ (susceptible). Inheritance analysis indicated that resistance to GSB is a multi-genic trait in this population. Three QTLs namely, ClGSB1.1, ClGSB10.1, and ClGSB11.1 associated with GSB resistance, explaining approximately 10% of the phenotypic variation, were identified. Among these, the QTL ClGSB1.1 on chromosome 1 is identified as a major QTL harboring five candidate genes associated with GSB resistance including two RLKs (ClC01G014900 and ClC01G015010), two WRKY transcription factors (ClC01G014910 and ClC01G014990), and one AvrRpt-cleavage domain protein (ClC01G015130). Conclusion Two high resolution melting (HRM) markers, WmGSB1.1–2 and WmGSB1.1–7 having a high positive correlation with the phenotypic variations, were developed. Five potential candidate genes were predicted to be associated with GSB resistance. These findings will help breeders to develop watermelon cultivars resistant to GSB. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08849-2.
Collapse
Affiliation(s)
- Jeong-Eui Hong
- Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam, 57922, Korea
| | - Mohammad Rashed Hossain
- Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Hee-Jeong Jung
- Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam, 57922, Korea
| | - Ill-Sup Nou
- Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam, 57922, Korea.
| |
Collapse
|
4
|
Huang Z, Liu L, Jian L, Xu W, Wang J, Li Y, Jiang CZ. Heterologous Expression of MfWRKY7 of Resurrection Plant Myrothamnus flabellifolia Enhances Salt and Drought Tolerance in Arabidopsis. Int J Mol Sci 2022; 23:ijms23147890. [PMID: 35887237 PMCID: PMC9324418 DOI: 10.3390/ijms23147890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/13/2022] [Accepted: 07/13/2022] [Indexed: 02/06/2023] Open
Abstract
Drought and salinity have become major environmental problems that affect the production of agriculture, forestry and horticulture. The identification of stress-tolerant genes from plants adaptive to harsh environments might be a feasible strategy for plant genetic improvement to address the challenges brought by global climate changes. In this study, a dehydration-upregulated gene MfWRKY7 of resurrection Plant Myrothamnusflabellifolia, encoding a group IId WRKY transcription factor, was cloned and characterized. The overexpression of MfWRKY7 in Arabidopsis increased root length and tolerance to drought and NaCl at both seedling and adult stages. Further investigation indicated that MfWRKY7 transgenic plants had higher contents of chlorophyll, proline, soluble protein, and soluble sugar but a lower water loss rate and malondialdehyde content compared with wild-type plants under both drought and salinity stresses. Moreover, the higher activities of antioxidant enzymes and lower accumulation of O2− and H2O2 in MfWRKY7 transgenic plants were also found, indicating enhanced antioxidation capacity by MfWRKY7. These findings showed that MfWRKY7 may function in positive regulation of responses to drought and salinity stresses, and therefore, it has potential application value in genetic improvement of plant tolerance to abiotic stress.
Collapse
Affiliation(s)
- Zhuo Huang
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (L.J.); (W.X.); (J.W.); (Y.L.)
- Correspondence: ; Tel.: +86-134-3893-4187
| | - Ling Liu
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (L.J.); (W.X.); (J.W.); (Y.L.)
| | - Linli Jian
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (L.J.); (W.X.); (J.W.); (Y.L.)
| | - Wenxin Xu
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (L.J.); (W.X.); (J.W.); (Y.L.)
| | - Jiatong Wang
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (L.J.); (W.X.); (J.W.); (Y.L.)
| | - Yaxuan Li
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (L.J.); (W.X.); (J.W.); (Y.L.)
| | - Cai-Zhong Jiang
- Department of Plant Sciences, University of California Davis, Davis, CA 95616, USA;
- Crops Pathology and Genetics Research Unit, United States Department of Agriculture, Agricultural Research Service, Davis, CA 95616, USA
| |
Collapse
|
5
|
Zhu L, Yang Q, Yu X, Fu X, Jin H, Yuan F. Transcriptomic and Metabolomic Analyses Reveal a Potential Mechanism to Improve Soybean Resistance to Anthracnose. FRONTIERS IN PLANT SCIENCE 2022; 13:850829. [PMID: 35574068 PMCID: PMC9094087 DOI: 10.3389/fpls.2022.850829] [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: 01/08/2022] [Accepted: 04/04/2022] [Indexed: 06/15/2023]
Abstract
Anthracnose, caused by Colletotrichum truncatum, leads to large-scale reduction in quality and yield in soybean production. Limited information is available regarding the molecular mechanisms of resistance to anthracnose in soybean. We conducted a transcriptomic and targeted metabolomic analysis of pods from two soybean lines, "Zhechun No. 3" (ZC3) and ZC-2, in response to C. truncatum infection. Factors contributing to the enhanced resistance of ZC-2 to anthracnose compared with that of ZC3, included signal transduction (jasmonic acid, auxin, mitogen-activated protein kinase, and Ca2+ signaling), transcription factors (WRKY and bHLH), resistance genes (PTI1, RPP13, RGA2, RPS6, and ULP2B), pathogenesis-related genes (chitinase and lipid transfer protein), and terpenoid metabolism. Targeted metabolomic analysis revealed that terpenoid metabolism responded more promptly and more intensely to C. truncatum infection in ZC-2 than in ZC3. In vitro antifungal activity and resistance induction test confirmed that jasmonic acid, auxin signaling and terpenoids played important roles in soybean resistance to anthracnose. This research is the first study to explore the molecular mechanisms of soybean resistance to anthracnose. The findings are important for in-depth analysis of molecular resistance mechanisms, discovery of resistance genes, and to expedite the breeding of anthracnose-resistant soybean cultivars.
Collapse
|
6
|
Zhang Y, Long Y, Liu Y, Yang M, Wang L, Liu X, Zhang Y, Chen Q, Li M, Lin Y, Tang H, Luo Y. MAPK5 and MAPK10 overexpression influences strawberry fruit ripening, antioxidant capacity and resistance to Botrytis cinerea. PLANTA 2021; 255:19. [PMID: 34894292 DOI: 10.1007/s00425-021-03804-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 11/27/2021] [Indexed: 06/14/2023]
Abstract
FaMAPK5 and FaMAPK10 genes were involved in ABA-mediated strawberry fruit ripening and could enhance the antioxidant capacity by increasing non-enzymatic components and enzymatic antioxidants. Mitogen-activated protein kinases (MAPKs) are the key proteins involved in plant stress response by activating an antioxidant defense system, which cooperates with plant hormones. However, the involvement of MAPKs in the regulation of strawberry fruit ripening and resistance is unclear. In this study, two genes, FaMAPK5 and FaMAPK10, were isolated, and their expression pattern and function analysis were conducted. The results showed FaMAPK5 and FaMAPK10 were expressed in all tested tissue/organ types and reached the highest expression level at the white stage during strawberry fruit development and ripening. Transient overexpression of FaMAPK5 and FaMAPK10 increased the fruit anthocyanin, abscisic acid (ABA), total sugar, and glucose contents. ABA and especially hydrogen peroxide (H2O2) treatment induced the production of large amounts of H2O2 and noticeably increased the expression levels of FaMAPK5 and FaMAPK10 in strawberry fruit, while the reduced glutathione (GSH) had the opposite effect. The level of total phenol and activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) significantly increased in FaMAPK5 overexpression fruit, and increased activities of SOD and CAT were observed in FaMAPK10 overexpression fruit. In addition, Botrytis cinerea treatment showed that overexpression of FaMAPK5 conferred retarded disease symptom development and enhanced fruit disease resistance. Our research revealed that FaMAPK5 and FaMAPK10 might participate in ABA-mediated H2O2 signaling in regulating strawberry fruit ripening and resistance.
Collapse
Affiliation(s)
- Yunting Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yu Long
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yiting Liu
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Min Yang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Liangxin Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiaoyang Liu
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yong Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qing Chen
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mengyao Li
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yuanxiu Lin
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Haoru Tang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Ya Luo
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, China.
| |
Collapse
|
7
|
Li C, Wang K, Huang Y, Lei C, Cao S, Qiu L, Xu F, Jiang Y, Zou Y, Zheng Y. Activation of the BABA-induced priming defence through redox homeostasis and the modules of TGA1 and MAPKK5 in postharvest peach fruit. MOLECULAR PLANT PATHOLOGY 2021; 22:1624-1640. [PMID: 34498365 PMCID: PMC8578844 DOI: 10.1111/mpp.13134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 05/09/2023]
Abstract
The priming of defence responses in pathogen-challenged model plants undergoes a preparation phase and an expression phase for defence function. However, the priming response in postharvest fruits has not been elucidated. Here, we found that 50 mM β-aminobutyric acid (BABA) treatment could induce two distinct pathways linked with TGA1-related systemic acquired resistance (SAR), resulting in the alleviation of Rhizopus rot in postharvest peach fruit. The first priming phase was elicited by BABA alone, leading to the enhanced transcription of redox-regulated genes and posttranslational modification of PpTGA1. The second phase was activated by an H2 O2 burst via up-regulation of PpRBOH genes and stimulation of the MAPK cascade on pathogen invasion, resulting in a robust defence. In the MAPK cascade, PpMAPKK5 was identified as a shortcut interacting protein of PpTGA1 and increased the DNA binding activity of PpTGA1 for the activation of salicylic acid (SA)-responsive PR genes. The overexpression of PpMAPKK5 in Arabidopsis caused the constitutive transcription of SA-dependent PR genes and as a result conferred resistance against the fungus Rhizopus stolonifer. Hence, we suggest that the BABA-induced priming defence in peaches is activated by redox homeostasis with an elicitor-induced reductive signalling and a pathogen-stimulated H2 O2 burst, which is accompanied by the possible phosphorylation of PpTGA1 by PpMAPKK5 for signal amplification.
Collapse
Affiliation(s)
- Chunhong Li
- College of Biology and Food EngineeringChongqing Three Gorges UniversityChongqingChina
- College of Food Science and TechnologyNanjing Agricultural UniversityNanjingChina
| | - Kaituo Wang
- College of Biology and Food EngineeringChongqing Three Gorges UniversityChongqingChina
- College of Food Science and TechnologyNanjing Agricultural UniversityNanjingChina
| | - Yixiao Huang
- College of Art and ScienceUniversity of MiamiCoral GablesFloridaUSA
| | - Changyi Lei
- College of Biology and Food EngineeringChongqing Three Gorges UniversityChongqingChina
| | - Shifeng Cao
- College of Biological and Environmental SciencesZhejiang Wanli UniversityNingboChina
| | - Linglan Qiu
- College of Biology and Food EngineeringChongqing Three Gorges UniversityChongqingChina
| | - Feng Xu
- College of Food Science and TechnologyNanjing Agricultural UniversityNanjingChina
- College of Food and Pharmaceutical SciencesNingbo UniversityNingboChina
| | - Yongbo Jiang
- College of Biology and Food EngineeringChongqing Three Gorges UniversityChongqingChina
| | - Yanyu Zou
- College of Biology and Food EngineeringChongqing Three Gorges UniversityChongqingChina
| | - Yonghua Zheng
- College of Food Science and TechnologyNanjing Agricultural UniversityNanjingChina
| |
Collapse
|
8
|
Gao P, Zhang H, Yan H, Wang Q, Yan B, Jian H, Tang K, Qiu X. RcTGA1 and glucosinolate biosynthesis pathway involvement in the defence of rose against the necrotrophic fungus Botrytis cinerea. BMC PLANT BIOLOGY 2021; 21:223. [PMID: 34001006 PMCID: PMC8130329 DOI: 10.1186/s12870-021-02973-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/03/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Rose is an important economic crop in horticulture. However, its field growth and postharvest quality are negatively affected by grey mould disease caused by Botrytis c. However, it is unclear how rose plants defend themselves against this fungal pathogen. Here, we used transcriptomic, metabolomic and VIGS analyses to explore the mechanism of resistance to Botrytis c. RESULT In this study, a protein activity analysis revealed a significant increase in defence enzyme activities in infected plants. RNA-Seq of plants infected for 0 h, 36 h, 60 h and 72 h produced a total of 54 GB of clean reads. Among these reads, 3990, 5995 and 8683 differentially expressed genes (DEGs) were found in CK vs. T36, CK vs. T60 and CK vs. T72, respectively. Gene annotation and cluster analysis of the DEGs revealed a variety of defence responses to Botrytis c. infection, including resistance (R) proteins, MAPK cascade reactions, plant hormone signal transduction pathways, plant-pathogen interaction pathways, Ca2+ and disease resistance-related genes. qPCR verification showed the reliability of the transcriptome data. The PTRV2-RcTGA1-infected plant material showed improved susceptibility of rose to Botrytis c. A total of 635 metabolites were detected in all samples, which could be divided into 29 groups. Metabonomic data showed that a total of 59, 78 and 74 DEMs were obtained for T36, T60 and T72 (T36: Botrytis c. inoculated rose flowers at 36 h; T60: Botrytis c. inoculated rose flowers at 60 h; T72: Botrytis c. inoculated rose flowers at 72 h) compared to CK, respectively. A variety of secondary metabolites are related to biological disease resistance, including tannins, amino acids and derivatives, and alkaloids, among others; they were significantly increased and enriched in phenylpropanoid biosynthesis, glucosinolates and other disease resistance pathways. This study provides a theoretical basis for breeding new cultivars that are resistant to Botrytis c. CONCLUSION Fifty-four GB of clean reads were generated through RNA-Seq. R proteins, ROS signalling, Ca2+ signalling, MAPK signalling, and SA signalling were activated in the Old Blush response to Botrytis c. RcTGA1 positively regulates rose resistance to Botrytis c. A total of 635 metabolites were detected in all samples. DEMs were enriched in phenylpropanoid biosynthesis, glucosinolates and other disease resistance pathways.
Collapse
Affiliation(s)
- Penghua Gao
- Flower Research Institute, Yunnan Academy of Agricultural Sciences/National Engineering Research Center for Ornamental Horticulture, Kunming, 650205, China
- Southwest Forestry University, Kunming, 650024, China
| | - Hao Zhang
- Flower Research Institute, Yunnan Academy of Agricultural Sciences/National Engineering Research Center for Ornamental Horticulture, Kunming, 650205, China
| | - Huijun Yan
- Flower Research Institute, Yunnan Academy of Agricultural Sciences/National Engineering Research Center for Ornamental Horticulture, Kunming, 650205, China
| | - Qigang Wang
- Flower Research Institute, Yunnan Academy of Agricultural Sciences/National Engineering Research Center for Ornamental Horticulture, Kunming, 650205, China
| | - Bo Yan
- Southwest Forestry University, Kunming, 650024, China
| | - Hongying Jian
- Flower Research Institute, Yunnan Academy of Agricultural Sciences/National Engineering Research Center for Ornamental Horticulture, Kunming, 650205, China
| | - Kaixue Tang
- Flower Research Institute, Yunnan Academy of Agricultural Sciences/National Engineering Research Center for Ornamental Horticulture, Kunming, 650205, China.
| | - Xianqin Qiu
- Flower Research Institute, Yunnan Academy of Agricultural Sciences/National Engineering Research Center for Ornamental Horticulture, Kunming, 650205, China.
| |
Collapse
|
9
|
De Tender C, Vandecasteele B, Verstraeten B, Ommeslag S, De Meyer T, De Visscher J, Dawyndt P, Clement L, Kyndt T, Debode J. Chitin in Strawberry Cultivation: Foliar Growth and Defense Response Promotion, but Reduced Fruit Yield and Disease Resistance by Nutrient Imbalances. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2021; 34:227-239. [PMID: 33135964 DOI: 10.1094/mpmi-08-20-0223-r] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Strawberry cultivation is associated with high mineral fertilizer doses and extensive use of chemical plant protection products. Based on previous research, we expected that chitin application to peat substrate would increase the nutrient availability and activate the plant systemic defense response, resulting in higher strawberry yields and fewer disease symptoms. We set up two experiments in which the temporal variability and differences in initial nutrient concentrations of the growing media were taken into account. Chitin treatment resulted in the attraction of plant growth-promoting fungi toward the plant root, such as species from genera Mortierella and Umbelopsis. In addition, by the end of the experiments 87 mg of mineral nitrogen (N) per liter of substrate was mineralized, which can be related to the observed increase in plant shoot biomass. This, however, led to nutrient imbalances in plant shoots and fruit; N concentration in the leaves increased over 30%, exceeding the optimal range, while phosphorous (P) and potassium (K) deficiencies occurred, with concentrations lower than 50% of the optimal range. This may explain the decreased fruit yield and disease resistance of the fruit toward Botrytis cinerea. In contrast, chitin caused a clear defense priming effect in the strawberry leaves, with a strong induction of the jasmonic acid response, resulting in fewer foliar disease symptoms. Chitin causes positive effects on shoot growth and foliar disease resistance, but caution needs to be taken for nutrient imbalances leading to negative influences on root growth, fruit production, and disease susceptibility toward B. cinerea.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
Collapse
Affiliation(s)
- C De Tender
- Plant Sciences Unit, Flanders Research Institute for Agriculture, Fisheries and Food, Burgemeester Van Gansberghelaan 92, 9820 Merelbeke, Belgium
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Krijgslaan 281 S9, 9000 Ghent, Belgium
| | - B Vandecasteele
- Plant Sciences Unit, Flanders Research Institute for Agriculture, Fisheries and Food, Burgemeester Van Gansberghelaan 92, 9820 Merelbeke, Belgium
| | - B Verstraeten
- Epigenetics & Defence Research Group, Department Biotechnology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - S Ommeslag
- Plant Sciences Unit, Flanders Research Institute for Agriculture, Fisheries and Food, Burgemeester Van Gansberghelaan 92, 9820 Merelbeke, Belgium
| | - T De Meyer
- Department of Data Analysis & Mathematical Modelling, Ghent University, Ghent, Belgium
- Bioinformatics Institute Ghent From Nucleotides to Networks, Ghent University, 9000 Ghent, Belgium
| | - J De Visscher
- Plant Sciences Unit, Flanders Research Institute for Agriculture, Fisheries and Food, Burgemeester Van Gansberghelaan 92, 9820 Merelbeke, Belgium
- Epigenetics & Defence Research Group, Department Biotechnology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - P Dawyndt
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Krijgslaan 281 S9, 9000 Ghent, Belgium
| | - L Clement
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Krijgslaan 281 S9, 9000 Ghent, Belgium
- Bioinformatics Institute Ghent From Nucleotides to Networks, Ghent University, 9000 Ghent, Belgium
| | - T Kyndt
- Epigenetics & Defence Research Group, Department Biotechnology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - J Debode
- Plant Sciences Unit, Flanders Research Institute for Agriculture, Fisheries and Food, Burgemeester Van Gansberghelaan 92, 9820 Merelbeke, Belgium
| |
Collapse
|
10
|
Xiao D, Li X, Zhou YY, Wei L, Keovongkod C, He H, Zhan J, Wang AQ, He LF. Transcriptome analysis reveals significant difference in gene expression and pathways between two peanut cultivars under Al stress. Gene 2021; 781:145535. [PMID: 33631240 DOI: 10.1016/j.gene.2021.145535] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/03/2021] [Accepted: 02/09/2021] [Indexed: 12/31/2022]
Abstract
Aluminum (Al) toxicity is an important factor in limiting peanut growth on acidic soil. The molecular mechanisms underlying peanut responses to Al stress are largely unknown. In this study, we performed transcriptome analysis of the root tips (0-1 cm) of peanut cultivar ZH2 (Al-sensitive) and 99-1507 (Al-tolerant) respectively. Root tips of peanuts that treated with 100 μM Al for 8 h and 24 h were analyzed by RNA-Seq, and a total of 8,587 differentially expressed genes (DEGs) were identified. GO and KEGG pathway analysis excavated a group of important Al-responsive genes related to organic acid transport, metal cation transport, transcription regulation and programmed cell death (PCD). These homologs were promising targets to modulate Al tolerance in peanuts. It was found that the rapid transcriptomic response to Al stress in 99-1507 helped to activate effective Al tolerance mechanisms. Protein and protein interaction analysis indicated that MAPK signal transduction played important roles in the early response to Al stress in peanuts. Moreover, weighted correlation network analysis (WGCNA) identified a predicted EIL (EIN3-like) gene with greatly increased expression as an Al-associated gene, and revealed a link between ethylene signaling transduction and Al resistance related genes in peanut, which suggested the enhanced signal transduction mediated the rapid transcriptomic responses. Our results revealed key pathways and genes associated with Al stress, and improved the understanding of Al response in peanut.
Collapse
Affiliation(s)
- Dong Xiao
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Nanning 530004, PR China.
| | - Xia Li
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, PR China
| | - Yun-Yi Zhou
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, PR China
| | - Li Wei
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, PR China
| | - Chanthaphoone Keovongkod
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, PR China
| | - Huyi He
- Cash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, PR China
| | - Jie Zhan
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Nanning 530004, PR China
| | - Ai-Qin Wang
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Nanning 530004, PR China
| | - Long-Fei He
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Nanning 530004, PR China.
| |
Collapse
|
11
|
Strawberry FaWRKY25 Transcription Factor Negatively Regulated the Resistance of Strawberry Fruits to Botrytis cinerea. Genes (Basel) 2020; 12:genes12010056. [PMID: 33396436 PMCID: PMC7824073 DOI: 10.3390/genes12010056] [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: 10/28/2020] [Revised: 12/12/2020] [Accepted: 12/29/2020] [Indexed: 01/01/2023] Open
Abstract
WRKY genes and jasmonic acid (JA) play a crucial role in plants’ responses against biotic and abiotic stress. However, the regulating mechanism of WRKY genes on strawberry fruits’ resistance against Botrytis cinerea is largely unknown, and few studies have been performed on their effect on the JA-mediated defense mechanism against B. cinerea. This study explored the effect of FaWRKY25 on the JA-mediated strawberry resistance against B. cinerea. Results showed that the JA content decreased significantly as the fruits matured, whereas the FaWRKY25 expression rose substantially, which led to heightened susceptibility to B. cinerea and in strawberries. External JA treatment significantly increased the JA content in strawberries and reduced the FaWRKY25 expression, thereby enhancing the fruits’ resistance against B. cinerea. FaWRKY25 overexpression significantly lowered the fruits’ resistance against B. cinerea, whereas FaWRKY25 silencing significantly increased resistance. Moreover, FaWRKY25 overexpression significantly lowered the JA content, whereas FaWRKY25 silencing significantly increased it. FaWRKY25 expression level substantially affects the expression levels of genes related to JA biosynthesis and metabolism, other members of the WRKY family, and defense genes. Accordingly, FaWRKY25 plays a crucial role in regulating strawberries’ resistance against B. cinerea and may negatively regulate their JA-mediated resistance mechanism against B. cinerea.
Collapse
|
12
|
Liu X, Li D, Zhang S, Xu Y, Zhang Z. Genome-wide characterization of the rose (Rosa chinensis) WRKY family and role of RcWRKY41 in gray mold resistance. BMC PLANT BIOLOGY 2019; 19:522. [PMID: 31775626 PMCID: PMC6882016 DOI: 10.1186/s12870-019-2139-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 11/14/2019] [Indexed: 05/10/2023]
Abstract
BACKGROUND The WRKYs are a major family of plant transcription factors that play roles in the responses to biotic and abiotic stresses; however, a comprehensive study of the WRKY family in roses (Rosa sp.) has not previously been performed. RESULTS In the present study, we performed a genome-wide analysis of the WRKY genes in the rose (Rosa chinensis), including their phylogenetic relationships, gene structure, chromosomal locations, and collinearity. Using a phylogenetic analysis, we divided the 56 RcWRKY genes into three subgroups. The RcWRKYs were unevenly distributed across all seven rose chromosomes, and a study of their collinearity suggested that genome duplication may have played a major role in RcWRKY gene duplication. A Ka/Ks analysis indicated that they mainly underwent purifying selection. Botrytis cinerea infection induced the expression of 19 RcWRKYs, most of which had undergone gene duplication during evolution. These RcWRKYs may regulate rose resistance against B. cinerea. Based on our phylogenetic and expression analyses, RcWRKY41 was identified as a candidate regulatory gene in the response to B. cinerea infection, which was confirmed using virus-induced gene silencing. CONCLUSIONS This study provides useful information to facilitate the further study of the function of the rose WRKY gene family.
Collapse
Affiliation(s)
- Xintong Liu
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Yuanmingyuan Xilu 2, Beijing, 100193, China
| | - Dandan Li
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Yuanmingyuan Xilu 2, Beijing, 100193, China
| | - Shiya Zhang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Yuanmingyuan Xilu 2, Beijing, 100193, China
| | - Yaling Xu
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Yuanmingyuan Xilu 2, Beijing, 100193, China
| | - Zhao Zhang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Yuanmingyuan Xilu 2, Beijing, 100193, China.
| |
Collapse
|
13
|
Liu Z, Shi L, Weng Y, Zou H, Li X, Yang S, Qiu S, Huang X, Huang J, Hussain A, Zhang K, Guan D, He S. ChiIV3 Acts as a Novel Target of WRKY40 to Mediate Pepper Immunity Against Ralstonia solanacearum Infection. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2019; 32:1121-1133. [PMID: 31039081 DOI: 10.1094/mpmi-11-18-0313-r] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
ChiIV3, a chitinase of pepper (Capsicum annuum), stimulates cell death in pepper plants. However, there are only scarce reports on its role in resistance against bacterial wilt disease such as that caused by Ralstonia solanacearum and their transcriptional regulation. In this study, the silencing of ChiIV3 in pepper plants significantly reduced the resistance to R. solanacearum. The transcript of ChiIV3 was induced by R. solanacearum inoculation (RSI) as well as exogenous application of methyl jasmonate and abscisic acid. The bioinformatics analysis revealed that the ChiIV3 promoter consists of multiple stress-related cis elements, including six W-boxes and one MYB1AT. With the 5' deletion assay in the ChiIV3 promoter, the W4-box located from -640 to -635 bp was identified as the cis element that is required for the response to RSI. In addition, the W4-box element was shown to be essential for the binding of the ChiIV3 promoter by the WRKY40 transcription factor, which is known to positively regulate the defense response to R. solanacearum. Site-directed mutagenesis in the W4-box sequence impaired the binding of WRKY40 to the ChiIV3 promoter. Subsequently, the transcription of ChiIV3 decreased in WRKY40-silenced pepper plants. These results demonstrated that the expression of the defense gene ChiIV3 is controlled through multiple modes of regulation, and WRKY40 directly binds to the W4-box element of the ChiIV3 promoter region for its transcriptional regulation.
Collapse
Affiliation(s)
- Zhiqin Liu
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Lanping Shi
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Yahong Weng
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Huasong Zou
- College of Plant Protection, Fujian Agriculture and Forestry University
| | - Xia Li
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Sheng Yang
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Shanshan Qiu
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Xueying Huang
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Jinfeng Huang
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Ansar Hussain
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Kan Zhang
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Deyi Guan
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| | - Shuilin He
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- College of Crop Science, Fujian Agriculture and Forestry University
| |
Collapse
|
14
|
Xi G, Wang Y, Yin L, Wang Y, Zhou S. De novo transcriptome analysis of gene responses to pest feeding in leaves of Panax ginseng C. A. Meyer. Mol Med Rep 2019; 20:433-444. [PMID: 31180519 PMCID: PMC6580019 DOI: 10.3892/mmr.2019.10275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 03/07/2019] [Indexed: 11/15/2022] Open
Abstract
The aim of the present study was to investigate the transcriptomic differences between Panax ginseng [Renshen (RS)] plants bitten by pests (n=3, test group; samples defined as RS11-13) or not (n=3, control group; samples defined as RS1-3) using de novo RNA sequencing on an Illumina HiSeq™ 2000 platform. A total of 51,097,386 (99.6%), 49,310,564 (99.5%), 59,192,372 (99.6%), 60,338,540 (99.5%), 56,976,410 (99.6%) and 54,226,588 (99.6%) clean reads were obtained for RS11, RS12, RS13, RS1, RS2 and RS3, respectively. De novo assembly generated 370,267 unigenes, 927 of which were differentially expressed genes (DEGs), including 782 significantly upregulated and 145 significantly downregulated genes. Function enrichment analysis revealed that these DEGs were located in 28 significantly enriched Kyoto Encyclopedia of Genes and Genomes pathways, including phenylpropanoid biosynthesis (for example, TRINITY_DN30766_c0_g2_i1, encoding peroxidase 20) and mitogen-activated protein kinase (MAPK) signaling (TRINITY_DN85589_c0_g1_i1, encoding WRKY transcription factor 75). Weighted gene co-expression network analysis identified modules including TRINITY_DN85589_c0_g1_i1, TRINITY_DN58279_c0_g1_i1 [encoding aspartyl protease (AP)] and TRINITY_DN74866_c0_g2_i1 [encoding 12-oxophytodienoate reductase (OPR)] that may be the most significantly associated with pest responses. In this module, TRINITY_DN85589_c0_g1_i1 may co-express with TRINITY_DN58279_c0_g1_i1 or TRINITY_DN74866_c0_g2_i1. WRYK and AP have been suggested to promote the activity of antioxidant peroxidase. Collectively, the findings from the present study suggested that a MAPK-WRKY-OPR/AP-peroxidase signaling pathway may be a potentially important mechanism underlying defense responses against pests in ginseng plants.
Collapse
Affiliation(s)
- Guangsheng Xi
- Pharmaceutical Engineering Department, College of Chemical Engineering and Resource Reuse, Wuzhou University, Wuzhou, Guangxi 543000, P.R. China
| | - Yanling Wang
- Pharmaceutical Engineering Department, College of Chemical Engineering and Resource Reuse, Wuzhou University, Wuzhou, Guangxi 543000, P.R. China
| | - Le Yin
- Department of Chinese Medicine, College of Chinese Medicine, Jilin Agricultural Science and Technology College, Jilin, Jilin 132101, P.R. China
| | - Yunjia Wang
- Department of Mapping and Geographic Information, College of Environment and Mapping, China University of Mining and Technology, Xuzhou, Jiangsu 221116, P.R. China
| | - Shengxue Zhou
- Department of Chinese Medicine, College of Chinese Medicine, Jilin Agricultural Science and Technology College, Jilin, Jilin 132101, P.R. China
| |
Collapse
|
15
|
Finatto T, Viana VE, Woyann LG, Busanello C, da Maia LC, de Oliveira AC. Can WRKY transcription factors help plants to overcome environmental challenges? Genet Mol Biol 2018; 41:533-544. [PMID: 30235398 PMCID: PMC6136380 DOI: 10.1590/1678-4685-gmb-2017-0232] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 01/22/2018] [Indexed: 12/13/2022] Open
Abstract
WRKY transcription factors (TFs) are responsible for the regulation of genes responsive to many plant growth and developmental cues, as well as to biotic and abiotic stresses. The modulation of gene expression by WRKY proteins primarily occurs by DNA binding at specific cis-regulatory elements, the W-box elements, which are short sequences located in the promoter region of certain genes. In addition, their action can occur through interaction with other TFs and the cellular transcription machinery. The current genome sequences available reveal a relatively large number of WRKY genes, reaching hundreds of copies. Recently, functional genomics studies in model plants have enabled the identification of function and mechanism of action of several WRKY TFs in plants. This review addresses the more recent studies in plants regarding the function of WRKY TFs in both model and crop plants for coping with environmental challenges, including a wide variety of abiotic and biotic stresses.
Collapse
Affiliation(s)
- Taciane Finatto
- Centro de Genômica e Fitomelhoramento, Departamento de Fitotecnia, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Vívian Ebeling Viana
- Centro de Genômica e Fitomelhoramento, Departamento de Fitotecnia, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, RS, Brazil
- Programa de Pós-Graduação em Biotecnologia, Centro de Desenvolvimento Tecnologico, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Leomar Guilherme Woyann
- Centro de Genômica e Fitomelhoramento, Departamento de Fitotecnia, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Carlos Busanello
- Centro de Genômica e Fitomelhoramento, Departamento de Fitotecnia, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Luciano Carlos da Maia
- Centro de Genômica e Fitomelhoramento, Departamento de Fitotecnia, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Antonio Costa de Oliveira
- Centro de Genômica e Fitomelhoramento, Departamento de Fitotecnia, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, RS, Brazil
- Programa de Pós-Graduação em Biotecnologia, Centro de Desenvolvimento Tecnologico, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| |
Collapse
|
16
|
Zhao H, Jiang J, Li K, Liu G. Populus simonii × Populus nigra WRKY70 is involved in salt stress and leaf blight disease responses. TREE PHYSIOLOGY 2017; 37:827-844. [PMID: 28369503 DOI: 10.1093/treephys/tpx020] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 02/21/2017] [Indexed: 05/21/2023]
Abstract
WRKY transcription factors (TFs) are important regulators in the complex stress response signaling networks in plants, but the detailed mechanisms underlying these regulatory networks have not been fully characterized. In the present study, we identified a Group III WRKY gene (PsnWRKY70, Potri.016G137900) from Populussimonii × Populusnigra and explored its function under salt and pathogen stresses. The promoter sequence that is located 2471-bp upstream from the start codon (SC) of PsnWRKY70 contained many stress-responsive cis-elements. Yeast one-hybrid assay suggested the upstream regulators, PsnWRKY70, PsnNAM (Potri.009G141600), PsnMYB (Potri.006G000800) and PsnGT1 (Potri.010G055000), probably modulate the expression of the PsnWRKY70 gene by specifically binding to the W-box or GT1GMSCAM4 (GT1) element. Yeast two-hybrid assay and transcriptome analysis revealed that HP1 (Potri.004G092100), RRM (Potri.008G146700), Ulp1 (Potri.002G105700) and some mitogen-activated protein kinase cascade members probably interact with PsnWRKY70 TF to response to salt stress. Compared with non-transgenic (NT) plants, PsnWRKY70-overexpressing (OEX) plants exhibited improved leaf blight disease resistance, while PsnWRKY70-repressing (REX) plants displayed enhanced salt stress tolerance. PsnWRKY70, PsnNAM, PsnMYB and PsnGT1 exhibited similar expression patterns in NT under salt and leaf blight disease stresses. The differentially expressed genes (DEGs) from NT vs OEX1 and the DEGs from NT vs REX1 exhibited considerable diversification. Most of the DEGs between NT and OEX1 were involved in aromatic amino acid biosynthesis, secondary metabolism, programmed cell death, peroxisomes and disease resistance. Most of the DEGs between NT and REX1 were related to desiccation response, urea transmembrane transport, abscisic acid response, calcium ion transport and hydrogen peroxide transmembrane transport. Our findings not only revealed the salt stress response signal transduction pathway of PsnWRKY70, but also provided direct evidence for the opposite biological functions of PsnWRKY70 TF in response to salt stress and leaf blight disease in P. simonii × P. nigra.
Collapse
Affiliation(s)
- Hui Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, No. 2, Hexing Road, Xiangfang, Harbin, Heilongjiang 150040, China
| | - Jing Jiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, No. 2, Hexing Road, Xiangfang, Harbin, Heilongjiang 150040, China
| | - Kailong Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, No. 2, Hexing Road, Xiangfang, Harbin, Heilongjiang 150040, China
| | - Guifeng Liu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, No. 2, Hexing Road, Xiangfang, Harbin, Heilongjiang 150040, China
| |
Collapse
|