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Liu K, Xu H, Gao X, Lu Y, Wang L, Ren Z, Chen C. Pan-Genome Analysis of TIFY Gene Family and Functional Analysis of CsTIFY Genes in Cucumber. Int J Mol Sci 2023; 25:185. [PMID: 38203357 PMCID: PMC10778933 DOI: 10.3390/ijms25010185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
Cucumbers are frequently affected by gray mold pathogen Botrytis cinerea, a pathogen that causes inhibited growth and reduced yield. Jasmonic acid (JA) plays a primary role in plant responses to biotic stresses, and the jasmonate-ZIM-Domain (JAZ) proteins are key regulators of the JA signaling pathway. In this study, we used the pan-genome of twelve cucumber varieties to identify cucumber TIFY genes. Our findings revealed that two CsTIFY genes were present in all twelve cucumber varieties and showed no differences in protein sequence, gene structure, and motif composition. This suggests their evolutionary conservation across different cucumber varieties and implies that they may play a crucial role in cucumber growth. On the other hand, the other fourteen CsTIFY genes exhibited variations in protein sequence and gene structure or conserved motifs, which could be the result of divergent evolution, as these genes adapt to different cultivation and environmental conditions. Analysis of the expression profiles of the CsTIFY genes showed differential regulation by B. cinerea. Transient transfection plants overexpressing CsJAZ2, CsJAZ6, or CsZML2 were found to be more susceptible to B. cinerea infection compared to control plants. Furthermore, these plants infected by the pathogen showed lower levels of the enzymatic activities of POD, SOD and CAT. Importantly, after B. cinerea infection, the content of JA was upregulated in the plants, and cucumber cotyledons pretreated with exogenous MeJA displayed increased resistance to B. cinerea infection compared to those pretreated with water. Therefore, this study explored key TIFY genes in the regulation of cucumber growth and adaptability to different cultivation environments based on bioinformatics analysis and demonstrated that CsJAZs negatively regulate cucumber disease resistance to gray mold via multiple signaling pathways.
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Affiliation(s)
- Kun Liu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China; (K.L.); (H.X.); (Y.L.); (L.W.); (Z.R.)
| | - Haiyu Xu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China; (K.L.); (H.X.); (Y.L.); (L.W.); (Z.R.)
| | - Xinbin Gao
- College of Horticulture, Northwest A and F University, Yangling 712100, China;
| | - Yinghao Lu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China; (K.L.); (H.X.); (Y.L.); (L.W.); (Z.R.)
| | - Lina Wang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China; (K.L.); (H.X.); (Y.L.); (L.W.); (Z.R.)
| | - Zhonghai Ren
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China; (K.L.); (H.X.); (Y.L.); (L.W.); (Z.R.)
| | - Chunhua Chen
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China; (K.L.); (H.X.); (Y.L.); (L.W.); (Z.R.)
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Ling Y, Xiong X, Yang W, Liu B, Shen Y, Xu L, Lu F, Li M, Guo Y, Zhang X. Comparative Analysis of Transcriptomics and Metabolomics Reveals Defense Mechanisms in Melon Cultivars against Pseudoperonospora cubensis Infection. Int J Mol Sci 2023; 24:17552. [PMID: 38139381 PMCID: PMC10743968 DOI: 10.3390/ijms242417552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Melon (Cucumis melo L.) represents an agriculturally significant horticultural crop that is widely grown for its flavorful fruits. Downy mildew (DM), a pervasive foliar disease, poses a significant threat to global melon production. Although several quantitative trait loci related to DM resistance have been identified, the comprehensive genetic underpinnings of this resistance remain largely uncharted. In this study, we utilized integrative transcriptomics and metabolomics approaches to identify potential resistance-associated genes and delineate the strategies involved in the defense against DM in two melon cultivars: the resistant 'PI442177' ('K10-1') and the susceptible 'Huangdanzi' ('K10-9'), post-P. cubensis infection. Even in the absence of the pathogen, there were distinctive differentially expressed genes (DEGs) between 'K10-1' and 'K10-9'. When P. cubensis was infected, certain genes, including flavin-containing monooxygenase (FMO), receptor-like protein kinase FERONIA (FER), and the HD-ZIP transcription factor member, AtHB7, displayed pronounced expression differences between the cultivars. Notably, our data suggest that following P. cubensis infection, both cultivars suppressed flavonoid biosynthesis via the down-regulation of associated genes whilst concurrently promoting lignin production. The complex interplay of transcriptomic and metabolic responses elucidated by this study provides foundational insights into melon's defense mechanisms against DM. The robust resilience of 'K10-1' to DM is attributed to the synergistic interaction of its inherent transcriptomic and metabolic reactions.
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Affiliation(s)
- Yueming Ling
- Hami-Melon Research Center, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Y.L.); (W.Y.); (B.L.); (Y.S.); (L.X.); (M.L.)
| | - Xianpeng Xiong
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China;
| | - Wenli Yang
- Hami-Melon Research Center, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Y.L.); (W.Y.); (B.L.); (Y.S.); (L.X.); (M.L.)
| | - Bin Liu
- Hami-Melon Research Center, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Y.L.); (W.Y.); (B.L.); (Y.S.); (L.X.); (M.L.)
| | - Yue Shen
- Hami-Melon Research Center, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Y.L.); (W.Y.); (B.L.); (Y.S.); (L.X.); (M.L.)
- College of Horticulture, Xinjiang Agricultural University, Urumqi 830091, China
| | - Lirong Xu
- Hami-Melon Research Center, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Y.L.); (W.Y.); (B.L.); (Y.S.); (L.X.); (M.L.)
- College of Horticulture, Xinjiang Agricultural University, Urumqi 830091, China
| | - Fuyuan Lu
- College of Agriculture, Shihezi University, Shihezi 832003, China;
| | - Meihua Li
- Hami-Melon Research Center, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Y.L.); (W.Y.); (B.L.); (Y.S.); (L.X.); (M.L.)
| | - Yangdong Guo
- College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Xuejun Zhang
- Hami-Melon Research Center, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (Y.L.); (W.Y.); (B.L.); (Y.S.); (L.X.); (M.L.)
- College of Horticulture, China Agricultural University, Beijing 100193, China
- Hainan Sanya Experimental Center for Crop Breeding, Xinjiang Academy of Agricultural Sciences, Sanya 572019, China
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Peng R, Sun S, Li N, Kong L, Chen Z, Wang P, Xu L, Wang H, Geng X. Physiological and transcriptome profiling revealed defense networks during Cladosporium fulvum and tomato interaction at the early stage. Front Plant Sci 2022; 13:1085395. [PMID: 36561446 PMCID: PMC9763619 DOI: 10.3389/fpls.2022.1085395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Tomato leaf mold caused by Cladosporium fulvum (C. fulvum) is a serious fungal disease which results in huge yield losses in tomato cultivation worldwide. In our study, we discovered that ROS (reactive oxygen species) burst was triggered by C. fulvum treatment in tomato leaves. RNA-sequencing was used to identify differentially expressed genes (DEGs) induced by C. fulvum inoculation at the early stage of invasion in susceptible tomato plants. Gene ontology (GO) terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases were used to annotate functions of DEGs in tomato plants. Based on our comparative analysis, DEGs related to plant-pathogen interaction pathway, plant hormone signal transduction pathway and the plant phenylpropanoid pathway were further analyzed. Our results discovered that a number of core defense genes against fungal invasion were induced and plant hormone signal transduction pathways were impacted by C. fulvum inoculation. Further, our results showed that SA (salicylic acid) and ABA (abscisic acid) contents were accumulated while JA (jasmonic acid) content decreased after C. fulvum inoculation in comparison with control, and quantitative real-time PCR to detect the relative expression of genes involved in SA, ABA and JA signaling pathway further confirmed our results. Together, results will contribute to understanding the mechanisms of C. fulvum and tomato interaction in future.
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Affiliation(s)
- Rong Peng
- College of Horticulture, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Sheng Sun
- College of Horticulture, Shanxi Agricultural University, Jinzhong, Shanxi, China
| | - Na Li
- College of Horticulture, Shanxi Agricultural University, Jinzhong, Shanxi, China
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Lingjuan Kong
- Vegetable Department, Shanghai Agricultural Technology Extension and Service Center, Shanghai, China
| | - Zhifeng Chen
- College of Biology and Agricultural Technology, Zunyi Normal University, Zunyi, China
| | - Peng Wang
- College of Horticulture, Shanxi Agricultural University, Jinzhong, Shanxi, China
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Lurong Xu
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Hehe Wang
- Clemson University, Edisto Research and Education Center, Blackville, SC, United States
| | - Xueqing Geng
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
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Yadav V, Wang Z, Guo Y, Zhang X. Comparative transcriptome profiling reveals the role of phytohormones and phenylpropanoid pathway in early-stage resistance against powdery mildew in watermelon ( Citrullus lanatus L.). Front Plant Sci 2022; 13:1016822. [PMID: 36340394 PMCID: PMC9632293 DOI: 10.3389/fpls.2022.1016822] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
Yield and fruit quality loss by powdery mildew (PM) fungus is a major concern in cucurbits, but early-stage resistance mechanisms remain elusive in the majority of cucurbits. Here, we explored the comparative transcriptomic dynamics profiling of resistant line ZXG1755 (R) and susceptible line ZXG1996 (S) 48 h post-inoculation in watermelon seedlings to check precise expression changes induced by Podosphaera. xanthii race '2F'. Phenotypic responses were confirmed by microscopy and endogenous levels of defense and signaling related phytochromes were detected higher in resistant lines. In total, 7642 differently expressed genes (DEGs) were detected, and 57.27% of genes were upregulated in four combinations. DEGs were predominantly abundant in the KEGG pathway linked with phenylpropanoid biosynthesis, plant hormone and transduction, and phenylalanine metabolism, whereas GO terms of defense response, response to fungus, and chitin response were predominant in resistant lines, evidencing significant defense mechanisms and differences in the basal gene expression levels between these contrasting lines. The expression of selected DEGs from major pathways (hormonal, lignin, peroxidase, sugar) were validated via qRT-PCR. Detailed analysis of DEGs evidenced that along with other DEGs, genes including PR1 (Cla97C02G034020) and PRX (Cla97C11G207220/30, Cla97C02G045100 and Cla97C02G049950) should be studied for their potential role. In short, our study portrayed strong evidence indicating the important role of a complex network associated with lignin biosynthesis and phytohormone related downstream mechanisms that are responsible for incompatible interaction between PM and watermelon resistance line.
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Affiliation(s)
- Vivek Yadav
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A & F University, Yangling, China
| | - Zhongyuan Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A & F University, Yangling, China
| | - Yanliang Guo
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A & F University, Yangling, China
| | - Xian Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A & F University, Yangling, China
- State Key Laboratory of Vegetable Germplasm Innovation, Tianjin, China
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He Y, Wei M, Yan Y, Yu C, Cheng S, Sun Y, Zhu X, Wei L, Wang H, Miao L. Research Advances in Genetic Mechanisms of Major Cucumber Diseases Resistance. Front Plant Sci 2022; 13:862486. [PMID: 35665153 PMCID: PMC9161162 DOI: 10.3389/fpls.2022.862486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 02/22/2022] [Indexed: 06/15/2023]
Abstract
Cucumber (Cucumis sativus L.) is an important economic vegetable crop worldwide that is susceptible to various common pathogens, including powdery mildew (PM), downy mildew (DM), and Fusarium wilt (FM). In cucumber breeding programs, identifying disease resistance and related molecular markers is generally a top priority. PM, DM, and FW are the major diseases of cucumber in China that cause severe yield losses and the genetic-based cucumber resistance against these diseases has been developed over the last decade. Still, the molecular mechanisms of cucumber disease resistance remain unclear. In this review, we summarize recent findings on the inheritance, molecular markers, and quantitative trait locus mapping of cucumber PM, DM, and FM resistance. In addition, several candidate genes, such as PM, DM, and FM resistance genes, with or without functional verification are reviewed. The data help to reveal the molecular mechanisms of cucumber disease resistance and provide exciting new opportunities for further resistance breeding.
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Affiliation(s)
- Yujin He
- Key Laboratory for Quality and Safety Control of Subtropical Fruits and Vegetables, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Mingming Wei
- Ministry of Agriculture Key Laboratory of Biology and Genetic Resource Utilization of Rubber Tree, State Key Laboratory Breeding Base of Cultivation and Physiology for Tropical Crops, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, China
| | - Yanyan Yan
- Key Laboratory for Quality and Safety Control of Subtropical Fruits and Vegetables, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Chao Yu
- Key Laboratory for Quality and Safety Control of Subtropical Fruits and Vegetables, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Siqi Cheng
- Key Laboratory for Quality and Safety Control of Subtropical Fruits and Vegetables, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Yihan Sun
- Key Laboratory for Quality and Safety Control of Subtropical Fruits and Vegetables, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Xiangtao Zhu
- College of Jiyang, Zhejiang Agriculture and Forestry University, Zhuji, China
| | - Lingling Wei
- Institute of Ecological Civilization, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Huasen Wang
- Key Laboratory for Quality and Safety Control of Subtropical Fruits and Vegetables, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
- Ministry of Agriculture Key Laboratory of Biology and Genetic Resource Utilization of Rubber Tree, State Key Laboratory Breeding Base of Cultivation and Physiology for Tropical Crops, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, China
| | - Li Miao
- Key Laboratory for Quality and Safety Control of Subtropical Fruits and Vegetables, Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
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Parvathi MS, Antony PD, Kutty MS. Multiple Stressors in Vegetable Production: Insights for Trait-Based Crop Improvement in Cucurbits. Front Plant Sci 2022; 13:861637. [PMID: 35592574 PMCID: PMC9111534 DOI: 10.3389/fpls.2022.861637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/14/2022] [Indexed: 06/15/2023]
Abstract
Vegetable production is a key determinant of contribution from the agricultural sector toward national Gross Domestic Product in a country like India, the second largest producer of fresh vegetables in the world. This calls for a careful scrutiny of the threats to vegetable farming in the event of climate extremes, environmental degradation and incidence of plant pests/diseases. Cucurbits are a vast group of vegetables grown almost throughout the world, which contribute to the daily diet on a global scale. Increasing food supply to cater to the ever-increasing world population, calls for intensive, off-season and year-round cultivation of cucurbits. Current situation predisposes these crops to a multitude of stressors, often simultaneously, under field conditions. This scenario warrants a systematic understanding of the different stress specific traits/mechanisms/pathways and their crosstalk that have been examined in cucurbits and identification of gaps and formulation of perspectives on prospective research directions. The careful dissection of plant responses under specific production environments will help in trait identification for genotype selection, germplasm screens to identify superior donors or for direct genetic manipulation by modern tools for crop improvement. Cucurbits exhibit a wide range of acclimatory responses to both biotic and abiotic stresses, among which a few like morphological characters like waxiness of cuticle; primary and secondary metabolic adjustments; membrane thermostability, osmoregulation and, protein and reactive oxygen species homeostasis and turnover contributing to cellular tolerance, appear to be common and involved in cross talk under combinatorial stress exposures. This is assumed to have profound influence in triggering system level acclimation responses that safeguard growth and metabolism. The possible strategies attempted such as grafting initiatives, molecular breeding, novel genetic manipulation avenues like gene editing and ameliorative stress mitigation approaches, have paved way to unravel the prospects for combined stress tolerance. The advent of next generation sequencing technologies and big data management of the omics output generated have added to the mettle of such emanated concepts and ideas. In this review, we attempt to compile the progress made in deciphering the biotic and abiotic stress responses of cucurbits and their associated traits, both individually and in combination.
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Affiliation(s)
- M. S. Parvathi
- Department of Plant Physiology, College of Agriculture Vellanikkara, Kerala Agricultural University, Thrissur, India
| | - P. Deepthy Antony
- Centre for Intellectual Property Rights, Technology Management and Trade, College of Agriculture Vellanikkara, Kerala Agricultural University, Thrissur, India
| | - M. Sangeeta Kutty
- Department of Vegetable Science, College of Agriculture Vellanikkara, Kerala Agricultural University, Thrissur, India
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Yang F, Wang H, Zhi C, Chen B, Zheng Y, Qiao L, Gao J, Pan Y, Cheng Z. Garlic Volatile Diallyl Disulfide Induced Cucumber Resistance to Downy Mildew. Int J Mol Sci 2021; 22:ijms222212328. [PMID: 34830208 PMCID: PMC8625977 DOI: 10.3390/ijms222212328] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 01/01/2023] Open
Abstract
Allicin compositions in garlic are used widely as fungicides in modern agriculture, in which diallyl disulfide (DADS) is a major compound. Downy mildew, caused by Pseudoperonospora cubensis (P. cubensis), is one of the most destructive diseases and causes severe yield losses in cucumbers. To explore the potential mechanism of DADS-induced cucumber resistance to downy mildew, cucumber seedlings were treated with DADS and then inoculated with P. cubensis at a 10-day interval. Symptom observation showed that DADS significantly induced cucumber resistance to downy mildew. Furthermore, both lignin and H2O2 were significantly increased by DADS treatment to responding P. cubensis infection. Simultaneously, the enzyme activities of peroxidase (POD) in DADS-treated seedlings were significantly promoted. Meanwhile, both the auxin (IAA) and salicylic acid (SA) contents were increased, and their related differentially expressed genes (DEGs) were up-regulated when treated with DADS. Transcriptome profiling showed that many DEGs were involved in the biological processes of defense responses, in which DEGs on the pathways of 'phenylpropanoid biosynthesis', 'phenylalanine metabolism', 'MAPK signaling', and 'plant hormone signal transduction' were significantly up-regulated in DADS-treated cucumbers uninoculated with the pathogen. Based on the results of several physiological indices and transcriptomes, a potential molecular mechanism of DADS-induced cucumber resistance to downy mildew was proposed and discussed. The results of this study might give new insight into the exploration of the induced resistance mechanism of cucumber to downy mildew and provide useful information for the subsequent mining of resistance genes in cucumber.
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Liao L, Hu Z, Liu S, Yang Y, Zhou Y. Characterization of Germin-like Proteins (GLPs) and Their Expression in Response to Abiotic and Biotic Stresses in Cucumber. Horticulturae 2021; 7:412. [DOI: 10.3390/horticulturae7100412] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Germins and germin-like proteins (GLPs) are glycoproteins closely associated with plant development and stress response in the plant kingdom. Here, we carried out genome-wide identification and expression analysis of the GLP gene family in cucumber to study their possible functions. A total of 38 GLP genes were identified in cucumber, which could be mapped to six out of the seven cucumber chromosomes. A phylogenetic analysis of the GLP members from cucumber, Arabidopsis and rice showed that these GLPs could be divided into six groups, and cucumber GLPs in the same group had highly similar conserved motif distribution and gene structure. Gene duplication analysis revealed that six cucumber GLP genes were located in the segmental duplication regions of cucumber chromosomes, while 14 genes were associated with tandem duplications. Tissue expression profiles of cucumber GLP genes showed that many genes were preferentially expressed in specific tissues. In addition, some cucumber GLP genes were differentially expressed under salt, drought and ABA treatments, as well as under DM inoculation. Our results provide important information for the functional identification of GLP genes in the growth, development and stress response of cucumber.
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