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Zhang D, Du L, Lin J, Wang L, Zheng P, Deng B, Zhang W, Su W, Liu Y, Lu Y, Qin Y, Wang X. Genome-wide identification and expression analysis of calmodulin and calmodulin-like genes in passion fruit (Passiflora edulis) and their involvement in flower and fruit development. BMC PLANT BIOLOGY 2024; 24:626. [PMID: 38961401 PMCID: PMC11220982 DOI: 10.1186/s12870-024-05295-y] [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: 12/17/2023] [Accepted: 06/13/2024] [Indexed: 07/05/2024]
Abstract
BACKGROUND The calmodulin (CaM) and calmodulin-like (CML) proteins play regulatory roles in plant growth and development, responses to biotic and abiotic stresses, and other biological processes. As a popular fruit and ornamental crop, it is important to explore the regulatory mechanism of flower and fruit development of passion fruit. RESULTS In this study, 32 PeCaM/PeCML genes were identified from passion fruit genome and were divided into 9 groups based on phylogenetic analysis. The structural analysis, including conserved motifs, gene structure and homologous modeling, illustrates that the PeCaM/PeCML in the same subgroup have relative conserved structural features. Collinearity analysis suggested that the expansion of the CaM/CML gene family likely took place mainly by segmental duplication, and the whole genome replication events were closely related with the rapid expansion of the gene group. PeCaM/PeCMLs were potentially required for different floral tissues development. Significantly, PeCML26 had extremely high expression levels during ovule and fruit development compared with other PeCML genes, suggesting that PeCML26 had potential functions involved in the development of passion fruit flowers and fruits. The co-presence of various cis-elements associated with growth and development, hormone responsiveness, and stress responsiveness in the promoter regions of these PeCaM/PeCMLs might contribute to their diverse regulatory roles. Furthermore, PeCaM/PeCMLs were also induced by various abiotic stresses. This work provides a comprehensive understanding of the CaM/CML gene family and valuable clues for future studies on the function and evolution of CaM/CML genes in passion fruit. CONCLUSION A total of 32 PeCaM/PeCML genes were divided into 9 groups. The PeCaM/PeCML genes showed differential expression patterns in floral tissues at different development stages. It is worth noting that PeCML26, which is highly homologous to AtCaM2, not only interacts with multiple BBR-BPC TFs, but also has high expression levels during ovule and fruit development, suggesting that PeCML26 had potential functions involved in the development of passion fruit flowers and fruits. This research lays the foundation for future investigations and validation of the potential function of PeCaM/PeCML genes in the growth and development of passion fruit.
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Affiliation(s)
- Dan Zhang
- Horticulture Research Institute, Guangxi Academy of Agricultural Sciences, Nanning Investigation Station of South Subtropical Fruit Trees, Ministry of Agriculture, Nanning, 530007, China
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Pingtan Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Lumiao Du
- Horticulture Research Institute, Guangxi Academy of Agricultural Sciences, Nanning Investigation Station of South Subtropical Fruit Trees, Ministry of Agriculture, Nanning, 530007, China
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Pingtan Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Jinting Lin
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Pingtan Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Lulu Wang
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Pingtan Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Ping Zheng
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Pingtan Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Biao Deng
- Horticulture Research Institute, Guangxi Academy of Agricultural Sciences, Nanning Investigation Station of South Subtropical Fruit Trees, Ministry of Agriculture, Nanning, 530007, China
| | - Wenbin Zhang
- Fine Variety Breeding Farm in Xinluo District, Longyan, 364000, China
| | - Weiqiang Su
- Horticulture Research Institute, Guangxi Academy of Agricultural Sciences, Nanning Investigation Station of South Subtropical Fruit Trees, Ministry of Agriculture, Nanning, 530007, China
| | - Yanhui Liu
- College of Life Sciences, Longyan University, Longyan, 364000, China
| | - Yuming Lu
- Horticulture Research Institute, Guangxi Academy of Agricultural Sciences, Nanning Investigation Station of South Subtropical Fruit Trees, Ministry of Agriculture, Nanning, 530007, China
| | - Yuan Qin
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Pingtan Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
| | - Xiaomei Wang
- Horticulture Research Institute, Guangxi Academy of Agricultural Sciences, Nanning Investigation Station of South Subtropical Fruit Trees, Ministry of Agriculture, Nanning, 530007, China.
- College of Life Science, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Pingtan Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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Wang Y, Liu C, Qin Y, Du Y, Song C, Kang Z, Guo J, Guo J. Stripe rust effector Pst03724 modulates host immunity by inhibiting NAD kinase activation by a calmodulin. PLANT PHYSIOLOGY 2024; 195:1624-1641. [PMID: 38441329 DOI: 10.1093/plphys/kiae112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 01/19/2024] [Indexed: 06/02/2024]
Abstract
Puccinia striiformis f. sp. tritici (Pst) secretes effector proteins that enter plant cells to manipulate host immune processes. In this report, we present an important Pst effector, Pst03724, whose mRNA expression level increases during Pst infection of wheat (Triticum aestivum). Silencing of Pst03724 reduced the growth and development of Pst. Pst03724 targeted the wheat calmodulin TaCaM3-2B, a positive regulator of wheat immunity. Subsequent investigations revealed that Pst03724 interferes with the TaCaM3-2B-NAD kinase (NADK) TaNADK2 association and thus inhibits the enzyme activity of TaNADK2 activated by TaCaM3-2B. Knocking down TaNADK2 expression by virus-mediated gene silencing significantly increased fungal growth and development, suggesting a decrease in resistance against Pst infection. In conclusion, our findings indicate that Pst effector Pst03724 inhibits the activity of NADK by interfering with the TaCaM3-2B-TaNADK2 association, thereby facilitating Pst infection.
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Affiliation(s)
- Yanfeng Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Xianyang 712100, Shaanxi, P. R. China
| | - Cong Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Xianyang 712100, Shaanxi, P. R. China
| | - Yuanyang Qin
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Xianyang 712100, Shaanxi, P. R. China
| | - Yuanyuan Du
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Xianyang 712100, Shaanxi, P. R. China
| | - Chao Song
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Xianyang 712100, Shaanxi, P. R. China
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Xianyang 712100, Shaanxi, P. R. China
| | - Jia Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Xianyang 712100, Shaanxi, P. R. China
| | - Jun Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Xianyang 712100, Shaanxi, P. R. China
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Ahmed R, Dey KK, Senthil-Kumar M, Modi MK, Sarmah BK, Bhorali P. Comparative transcriptome profiling reveals differential defense responses among Alternaria brassicicola resistant Sinapis alba and susceptible Brassica rapa. FRONTIERS IN PLANT SCIENCE 2024; 14:1251349. [PMID: 38304451 PMCID: PMC10831657 DOI: 10.3389/fpls.2023.1251349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 11/14/2023] [Indexed: 02/03/2024]
Abstract
Alternaria blight is a devastating disease that causes significant crop losses in oilseed Brassicas every year. Adoption of conventional breeding to generate disease-resistant varieties has so far been unsuccessful due to the lack of suitable resistant source germplasms of cultivated Brassica spp. A thorough understanding of the molecular basis of resistance, as well as the identification of defense-related genes involved in resistance responses in closely related wild germplasms, would substantially aid in disease management. In the current study, a comparative transcriptome profiling was performed using Illumina based RNA-seq to detect differentially expressed genes (DEGs) specifically modulated in response to Alternaria brassicicola infection in resistant Sinapis alba, a close relative of Brassicas, and the highly susceptible Brassica rapa. The analysis revealed that, at 48 hpi (hours post inoculation), 3396 genes were upregulated and 23239 were downregulated, whereas at 72 hpi, 4023 genes were upregulated and 21116 were downregulated. Furthermore, a large number of defense response genes were detected to be specifically regulated as a result of Alternaria infection. The transcriptome data was validated using qPCR-based expression profiling for selected defense-related DEGs, that revealed significantly higher fold change in gene expression in S. alba when compared to B. rapa. Expression of most of the selected genes was elevated across all the time points under study with significantly higher expression towards the later time point of 72 hpi in the resistant germplasm. S. alba activates a stronger defense response reaction against the disease by deploying an array of genes and transcription factors involved in a wide range of biological processes such as pathogen recognition, signal transduction, cell wall modification, antioxidation, transcription regulation, etc. Overall, the study provides new insights on resistance of S. alba against A. brassicicola, which will aid in devising strategies for breeding resistant varieties of oilseed Brassica.
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Affiliation(s)
- Reshma Ahmed
- Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat, Assam, India
| | - Kuntal Kumar Dey
- Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat, Assam, India
| | | | - Mahendra Kumar Modi
- Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat, Assam, India
| | - Bidyut Kumar Sarmah
- Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat, Assam, India
- Department of Biotechnology - Northeast Centre for Agricultural Biotechnology, Assam Agricultural University, Jorhat, Assam, India
| | - Priyadarshini Bhorali
- Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat, Assam, India
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Kang BH, Chowdhury S, Kang SH, Shin SY, Lee WH, Lee HS, Ha BK. Transcriptome Profiling of a Soybean Mutant with Salt Tolerance Induced by Gamma-ray Irradiation. PLANTS (BASEL, SWITZERLAND) 2024; 13:254. [PMID: 38256807 PMCID: PMC10818854 DOI: 10.3390/plants13020254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/21/2023] [Accepted: 01/11/2024] [Indexed: 01/24/2024]
Abstract
Salt stress is a significant abiotic stress that reduces crop yield and quality globally. In this study, we utilized RNA sequencing (RNA-Seq) to identify differentially expressed genes (DEGs) in response to salt stress induced by gamma-ray irradiation in a salt-tolerant soybean mutant. The total RNA library samples were obtained from the salt-sensitive soybean cultivar Kwangan and the salt-tolerant mutant KA-1285. Samples were taken at three time points (0, 24, and 72 h) from two tissues (leaves and roots) under 200 mM NaCl. A total of 967,719,358 clean reads were generated using the Illumina NovaSeq 6000 platform, and 94.48% of these reads were mapped to 56,044 gene models of the soybean reference genome (Glycine_max_Wm82.a2.v1). The DEGs with expression values were compared at each time point within each tissue between the two soybeans. As a result, 296 DEGs were identified in the leaves, while 170 DEGs were identified in the roots. In the case of the leaves, eight DEGs were related to the phenylpropanoid biosynthesis pathway; however, in the roots, Glyma.03G171700 within GmSalt3, a major QTL associated with salt tolerance in soybean plants, was differentially expressed. Overall, these differences may explain the mechanisms through which mutants exhibit enhanced tolerance to salt stress, and they may provide a basic understanding of salt tolerance in soybean plants.
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Affiliation(s)
- Byeong Hee Kang
- Department of Applied Plant Science, Chonnam National University, Gwangju 61186, Republic of Korea; (B.H.K.); (S.C.); (S.-H.K.); (S.-Y.S.); (W.-H.L.)
- BK21 Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sreeparna Chowdhury
- Department of Applied Plant Science, Chonnam National University, Gwangju 61186, Republic of Korea; (B.H.K.); (S.C.); (S.-H.K.); (S.-Y.S.); (W.-H.L.)
| | - Se-Hee Kang
- Department of Applied Plant Science, Chonnam National University, Gwangju 61186, Republic of Korea; (B.H.K.); (S.C.); (S.-H.K.); (S.-Y.S.); (W.-H.L.)
- BK21 Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Seo-Young Shin
- Department of Applied Plant Science, Chonnam National University, Gwangju 61186, Republic of Korea; (B.H.K.); (S.C.); (S.-H.K.); (S.-Y.S.); (W.-H.L.)
- BK21 Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Won-Ho Lee
- Department of Applied Plant Science, Chonnam National University, Gwangju 61186, Republic of Korea; (B.H.K.); (S.C.); (S.-H.K.); (S.-Y.S.); (W.-H.L.)
- BK21 Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Hyeon-Seok Lee
- National Institute of Crop Science, RDA, Wanju 55365, Republic of Korea
| | - Bo-Keun Ha
- Department of Applied Plant Science, Chonnam National University, Gwangju 61186, Republic of Korea; (B.H.K.); (S.C.); (S.-H.K.); (S.-Y.S.); (W.-H.L.)
- BK21 Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
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Zeng H, Zhu Q, Yuan P, Yan Y, Yi K, Du L. Calmodulin and calmodulin-like protein-mediated plant responses to biotic stresses. PLANT, CELL & ENVIRONMENT 2023; 46:3680-3703. [PMID: 37575022 DOI: 10.1111/pce.14686] [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: 05/17/2023] [Revised: 07/10/2023] [Accepted: 08/01/2023] [Indexed: 08/15/2023]
Abstract
Plants have evolved a set of finely regulated mechanisms to respond to various biotic stresses. Transient changes in intracellular calcium (Ca2+ ) concentration have been well documented to act as cellular signals in coupling environmental stimuli to appropriate physiological responses with astonishing accuracy and specificity in plants. Calmodulins (CaMs) and calmodulin-like proteins (CMLs) are extensively characterized as important classes of Ca2+ sensors. The spatial-temporal coordination between Ca2+ transients, CaMs/CMLs and their target proteins is critical for plant responses to environmental stresses. Ca2+ -loaded CaMs/CMLs interact with and regulate a broad spectrum of target proteins, such as ion transporters (including channels, pumps, and antiporters), transcription factors, protein kinases, protein phosphatases, metabolic enzymes and proteins with unknown biological functions. This review focuses on mechanisms underlying how CaMs/CMLs are involved in the regulation of plant responses to diverse biotic stresses including pathogen infections and herbivore attacks. Recent discoveries of crucial functions of CaMs/CMLs and their target proteins in biotic stress resistance revealed through physiological, molecular, biochemical, and genetic analyses have been described, and intriguing insights into the CaM/CML-mediated regulatory network are proposed. Perspectives for future directions in understanding CaM/CML-mediated signalling pathways in plant responses to biotic stresses are discussed. The application of accumulated knowledge of CaM/CML-mediated signalling in biotic stress responses into crop cultivation would improve crop resistance to various biotic stresses and safeguard our food production in the future.
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Affiliation(s)
- Houqing Zeng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Qiuqing Zhu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Peiguo Yuan
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, Texas, USA
| | - Yan Yan
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, USA
| | - Keke Yi
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Liqun Du
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
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Negi NP, Prakash G, Narwal P, Panwar R, Kumar D, Chaudhry B, Rustagi A. The calcium connection: exploring the intricacies of calcium signaling in plant-microbe interactions. FRONTIERS IN PLANT SCIENCE 2023; 14:1248648. [PMID: 37849843 PMCID: PMC10578444 DOI: 10.3389/fpls.2023.1248648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 08/24/2023] [Indexed: 10/19/2023]
Abstract
The process of plant immune response is orchestrated by intracellular signaling molecules. Since plants are devoid of a humoral system, they develop extensive mechanism of pathogen recognition, signal perception, and intricate cell signaling for their protection from biotic and abiotic stresses. The pathogenic attack induces calcium ion accumulation in the plant cells, resulting in calcium signatures that regulate the synthesis of proteins of defense system. These calcium signatures induct different calcium dependent proteins such as calmodulins (CaMs), calcineurin B-like proteins (CBLs), calcium-dependent protein kinases (CDPKs) and other signaling molecules to orchestrate the complex defense signaling. Using advanced biotechnological tools, the role of Ca2+ signaling during plant-microbe interactions and the role of CaM/CMLs and CDPKs in plant defense mechanism has been revealed to some extent. The Emerging perspectives on calcium signaling in plant-microbe interactions suggest that this complex interplay could be harnessed to improve plant resistance against pathogenic microbes. We present here an overview of current understanding in calcium signatures during plant-microbe interaction so as to imbibe a future direction of research.
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Affiliation(s)
- Neelam Prabha Negi
- University Institute of Biotechnology, Chandigarh University, Mohali, India
| | - Geeta Prakash
- Department of Botany, Gargi College, New Delhi, India
| | - Parul Narwal
- University Institute of Biotechnology, Chandigarh University, Mohali, India
| | - Ruby Panwar
- Department of Botany, Gargi College, New Delhi, India
| | - Deepak Kumar
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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Jayaprakash A, Roy A, Thanmalagan RR, Arunachalam A, P T V L. Understanding the mechanism of pathogenicity through interactome studies between Arachis hypogaea L. and Aspergillus flavus. J Proteomics 2023; 287:104975. [PMID: 37482270 DOI: 10.1016/j.jprot.2023.104975] [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: 02/06/2023] [Revised: 06/28/2023] [Accepted: 07/15/2023] [Indexed: 07/25/2023]
Abstract
Aspergillus flavus (A. flavus) infects the peanut seeds during pre-and post-harvest stages, causing seed quality destruction for humans and livestock consumption. Even though many resistant varieties were developed, the molecular mechanism of defense interactions of peanut against A. flavus still needs further investigation. Hence, an interologous host-pathogen protein interaction (HPPI) network was constructed to understand the subcellular level interaction mechanism between peanut and A. flavus. Out of the top 10 hub proteins of both organisms, protein phosphatase 2C and cyclic nucleotide-binding/kinase domain-containing protein and different ribosomal proteins were identified as candidate proteins involved in defense. Functional annotation and subcellular localization based characterization of HPPI identified protein SGT1 homolog, calmodulin and Rac-like GTP-binding proteins to be involved in defense response against fungus. The relevance of HPPI in infectious conditions was assessed using two transcriptome data which identified the interplay of host kinase class R proteins, bHLH TFs and cell wall related proteins to impart resistance against pathogen infection. Further, the pathogenicity analysis identified glycogen phosphorylase and molecular chaperone and allergen Mod-E/Hsp90/Hsp1 as potential pathogen targets to enhance the host defense mechanism. Hence, the computationally predicted host-pathogen PPI network could provide valuable support for molecular biology experiments to understand the host-pathogen interaction. SIGNIFICANCE: Protein-protein interactions execute significant cellular interactions in an organism and are influenced majorly by stress conditions. Here we reported the host-pathogen protein-protein interaction between peanut and A. flavus, and a detailed network analysis based on function, subcellular localization, gene co-expression, and pathogenicity was performed. The network analysis identified key proteins such as host kinase class R proteins, calmodulin, SGT1 homolog, Rac-like GTP-binding proteins bHLH TFs and cell wall related to impart resistance against pathogen infection. We observed the interplay of defense related proteins and cell wall related proteins predominantly, which could be subjected to further studies. The network analysis described in this study could be applied to understand other host-pathogen systems generally.
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Affiliation(s)
- Aiswarya Jayaprakash
- Department of Bioinformatics, School of Life Sciences, Pondicherry University, R. V. Nagar Kalapet, Pondicherry 605014, India
| | - Abhijeet Roy
- Department of Bioinformatics, School of Life Sciences, Pondicherry University, R. V. Nagar Kalapet, Pondicherry 605014, India
| | - Raja Rajeswary Thanmalagan
- Department of Bioinformatics, School of Life Sciences, Pondicherry University, R. V. Nagar Kalapet, Pondicherry 605014, India
| | - Annamalai Arunachalam
- Department of Food Science & Technology, School of Life Sciences, Pondicherry University, R. V. Nagar Kalapet, Pondicherry 605014, India
| | - Lakshmi P T V
- Department of Bioinformatics, School of Life Sciences, Pondicherry University, R. V. Nagar Kalapet, Pondicherry 605014, India.
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Wang X, Komatsu S. Subcellular Proteomics to Elucidate Soybean Response to Abiotic Stress. PLANTS (BASEL, SWITZERLAND) 2023; 12:2865. [PMID: 37571018 PMCID: PMC10421527 DOI: 10.3390/plants12152865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023]
Abstract
Climate change jeopardizes soybean production by declining seed yield and quality. In this review, the morphophysiological alterations of soybean in response to abiotic stress are summarized, followed by illustrations of cellular metabolisms and regulatory mechanisms to organellar stress based on subcellular proteomics. This highlights the communications associated with reactive oxygen species scavenging, molecular chaperones, and phytohormone signals among subcellular compartments. Given the complexity of climate change and the limitations of plants in coping with multiple abiotic stresses, a generic response to environmental constraints is proposed between calcium and abscisic acid signals in subcellular organelles. This review summarizes the findings of subcellular proteomics in stressed soybean and discusses the future prospects of subcellular proteomics for promoting the improvement of climate-tolerant crops.
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Affiliation(s)
- Xin Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China;
| | - Setsuko Komatsu
- Faculty of Environmental and Information Sciences, Fukui University of Technology, Fukui 910-8505, Japan
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Reshi ZA, Ahmad W, Lukatkin AS, Javed SB. From Nature to Lab: A Review of Secondary Metabolite Biosynthetic Pathways, Environmental Influences, and In Vitro Approaches. Metabolites 2023; 13:895. [PMID: 37623839 PMCID: PMC10456650 DOI: 10.3390/metabo13080895] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/22/2023] [Accepted: 07/25/2023] [Indexed: 08/26/2023] Open
Abstract
Secondary metabolites are gaining an increasing importance in various industries, such as pharmaceuticals, dyes, and food, as is the need for reliable and efficient methods of procuring these compounds. To develop sustainable and cost-effective approaches, a comprehensive understanding of the biosynthetic pathways and the factors influencing secondary metabolite production is essential. These compounds are a unique type of natural product which recognizes the oxidative damage caused by stresses, thereby activating the defence mechanism in plants. Various methods have been developed to enhance the production of secondary metabolites in plants. The elicitor-induced in vitro culture technique is considered an efficient tool for studying and improving the production of secondary metabolites in plants. In the present review, we have documented various biosynthetic pathways and the role of secondary metabolites under diverse environmental stresses. Furthermore, a practical strategy for obtaining consistent and abundant secondary metabolite production via various elicitation agents used in culturing techniques is also mentioned. By elucidating the intricate interplay of regulatory factors, this review paves the way for future advancements in sustainable and efficient production methods for high-value secondary metabolites.
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Affiliation(s)
- Zubair Altaf Reshi
- Plant Biotechnology Laboratory, Department of Botany, Aligarh Muslim University, Aligarh 202002, India; (Z.A.R.); (W.A.)
| | - Waquar Ahmad
- Plant Biotechnology Laboratory, Department of Botany, Aligarh Muslim University, Aligarh 202002, India; (Z.A.R.); (W.A.)
| | - Alexander S. Lukatkin
- Department of General Biology and Ecology, N.P. Ogarev Mordovia State University, 430005 Saransk, Russia
| | - Saad Bin Javed
- Plant Biotechnology Laboratory, Department of Botany, Aligarh Muslim University, Aligarh 202002, India; (Z.A.R.); (W.A.)
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Li L, Guo N, Cao Y, Zhai X, Fan G. Genome-Wide Characterization of Calmodulin and Calmodulin-like Protein Gene Families in Paulownia fortunei and Identification of Their Potential Involvement in Paulownia Witches' Broom. Genes (Basel) 2023; 14:1540. [PMID: 37628592 PMCID: PMC10454933 DOI: 10.3390/genes14081540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/29/2023] [Accepted: 07/17/2023] [Indexed: 08/27/2023] Open
Abstract
As significant Ca2+ sensors, calmodulin (CaM) and calmodulin-like proteins (CML), have been associated with a variety of environmental conditions in plants. However, whether CaMs/CMLs are related to the stress of phytoplasma infection has not been reported in Paulownia fortunei. In the current study, 5 PfCaMs and 58 PfCMLs were detected through a genome-wide investigation. The number of EF-hand motifs in all PfCaMs/CMLs varied. Bioinformatics analyses, including protein characteristics, conserved domain, gene structure, cis-elements, evolutionary relationship, collinearity, chromosomal location, post-translation modification site, subcellular localization and expression pattern analyses, represented the conservation and divergence of PfCaMs/CMLs. Furthermore, some PfCaMs/CMLs might be involved in plants' reaction to phytoplasma infection and exogenous calcium therapy, indicating these genes may play a role in abiotic as well as biotic stress responses. In addition, subcellular localization analysis showed that PfCML10 was located in the cell membrane and nucleus. In summary, these findings establish a stronger platform for their subsequent functional investigation in trees and further characterize their roles in Paulownia witches' broom (PaWB) occurrence.
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Affiliation(s)
- Lijiao Li
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (L.L.); (N.G.); (Y.C.)
- Institute of Paulownia, Henan Agricultural University, Zhengzhou 450002, China
| | - Na Guo
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (L.L.); (N.G.); (Y.C.)
- Institute of Paulownia, Henan Agricultural University, Zhengzhou 450002, China
| | - Yabing Cao
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (L.L.); (N.G.); (Y.C.)
- Institute of Paulownia, Henan Agricultural University, Zhengzhou 450002, China
| | | | - Guoqiang Fan
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China; (L.L.); (N.G.); (Y.C.)
- Institute of Paulownia, Henan Agricultural University, Zhengzhou 450002, China
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11
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Zhang L, Wu Y, Yu Y, Zhang Y, Wei F, Zhu QH, Zhou J, Zhao L, Zhang Y, Feng Z, Feng H, Sun J. Acetylation of GhCaM7 enhances cotton resistance to Verticillium dahliae. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 114:1405-1424. [PMID: 36948889 DOI: 10.1111/tpj.16200] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/09/2023] [Accepted: 03/14/2023] [Indexed: 06/17/2023]
Abstract
Protein lysine acetylation is an important post-translational modification mechanism involved in cellular regulation in eukaryotes. Calmodulin (CaM) is a ubiquitous Ca2+ sensor in eukaryotes and is crucial for plant immunity, but it is so far unclear whether acetylation is involved in CaM-mediated plant immunity. Here, we found that GhCaM7 is acetylated upon Verticillium dahliae (V. dahliae) infection and a positive regulator of V. dahliae resistance. Overexpressing GhCaM7 in cotton and Arabidopsis enhances V. dahliae resistance and knocking-down GhCaM7 makes cotton more susceptible to V. dahliae. Transgenic Arabidopsis plants overexpressing GhCaM7 with mutation at the acetylation site are more susceptible to V. dahliae than transgenics overexpressing the wild-type GhCaM7, implying the importance of the acetylated GhCaM7 in response to V. dahliae infection. Yeast two-hybrid, bimolecular fluorescent complementation, luciferase complementation imaging, and coimmunoprecipitation assays demonstrated interaction between GhCaM7 and an osmotin protein GhOSM34 that was shown to have a positive role in V. dahliae resistance. GhCaM7 and GhOSM34 are co-localized in the cell membrane. Upon V. dahliae infection, the Ca2+ content reduces almost instantly in plants with downregulated GhCaM7 or GhOSM34. Down regulating GhOSM34 enhances accumulation of Na+ and increases cell osmotic pressure. Comparative transcriptomic analyses between cotton plants with an increased or reduced expression level of GhCaM7 and wild-type plants indicate the involvement of jasmonic acid signaling pathways and reactive oxygen species in GhCaM7-enabled disease resistance. Together, these results demonstrate the involvement of CaM protein in the interaction between cotton and V. dahliae, and more importantly, the involvement of the acetylated CaM in the interaction.
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Affiliation(s)
- Lei Zhang
- College of Agriculture/The Key Laboratory of Oasis Eco-agriculture, Shihezi University, Shihezi, 832000, Xinjiang, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Yajie Wu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
- Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, 831100, Xinjiang, China
| | - Yongang Yu
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Yihao Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
| | - Feng Wei
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
| | - Qian-Hao Zhu
- CSIRO Agriculture and Food, GPO Box 1700, Canberra, 2601, Australia
| | - Jinglong Zhou
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Lihong Zhao
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
| | - Yalin Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Zili Feng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
| | - Hongjie Feng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Jie Sun
- College of Agriculture/The Key Laboratory of Oasis Eco-agriculture, Shihezi University, Shihezi, 832000, Xinjiang, China
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12
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Leung HS, Chan LY, Law CH, Li MW, Lam HM. Twenty years of mining salt tolerance genes in soybean. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2023; 43:45. [PMID: 37313223 PMCID: PMC10248715 DOI: 10.1007/s11032-023-01383-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 04/12/2023] [Indexed: 06/15/2023]
Abstract
Current combined challenges of rising food demand, climate change and farmland degradation exert enormous pressure on agricultural production. Worldwide soil salinization, in particular, necessitates the development of salt-tolerant crops. Soybean, being a globally important produce, has its genetic resources increasingly examined to facilitate crop improvement based on functional genomics. In response to the multifaceted physiological challenge that salt stress imposes, soybean has evolved an array of defences against salinity. These include maintaining cell homeostasis by ion transportation, osmoregulation, and restoring oxidative balance. Other adaptations include cell wall alterations, transcriptomic reprogramming, and efficient signal transduction for detecting and responding to salt stress. Here, we reviewed functionally verified genes that underly different salt tolerance mechanisms employed by soybean in the past two decades, and discussed the strategy in selecting salt tolerance genes for crop improvement. Future studies could adopt an integrated multi-omic approach in characterizing soybean salt tolerance adaptations and put our existing knowledge into practice via omic-assisted breeding and gene editing. This review serves as a guide and inspiration for crop developers in enhancing soybean tolerance against abiotic stresses, thereby fulfilling the role of science in solving real-life problems. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-023-01383-3.
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Affiliation(s)
- Hoi-Sze Leung
- Center for Soybean Research of the State Key Laboratory of Agrobiotechnology, and School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR People’s Republic of China
| | - Long-Yiu Chan
- Center for Soybean Research of the State Key Laboratory of Agrobiotechnology, and School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR People’s Republic of China
| | - Cheuk-Hin Law
- Center for Soybean Research of the State Key Laboratory of Agrobiotechnology, and School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR People’s Republic of China
| | - Man-Wah Li
- Center for Soybean Research of the State Key Laboratory of Agrobiotechnology, and School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR People’s Republic of China
| | - Hon-Ming Lam
- Center for Soybean Research of the State Key Laboratory of Agrobiotechnology, and School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR People’s Republic of China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, 518000 People’s Republic of China
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13
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Pereira BM, Arraes F, Martins ACQ, Alves NSF, Melo BP, Morgante CV, Saraiva MAP, Grossi-de-Sá MF, Guimaraes PM, Brasileiro ACM. A novel soybean hairy root system for gene functional validation. PLoS One 2023; 18:e0285504. [PMID: 37200365 DOI: 10.1371/journal.pone.0285504] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 04/24/2023] [Indexed: 05/20/2023] Open
Abstract
Agrobacterium rhizogenes-mediated transformation has long been explored as a versatile and reliable method for gene function validation in many plant species, including soybean (Glycine max). Likewise, detached-leaf assays have been widely used for rapid and mass screening of soybean genotypes for disease resistance. The present study combines these two methods to establish an efficient and practical system to generate transgenic soybean hairy roots from detached leaves and their subsequent culture under ex vitro conditions. We demonstrated that hairy roots derived from leaves of two (tropical and temperate) soybean cultivars could be successfully infected by economically important species of root-knot nematodes (Meloidogyne incognita and M. javanica). The established detached-leaf method was further explored for functional validation of two candidate genes encoding for cell wall modifying proteins (CWMPs) to promote resistance against M. incognita through distinct biotechnological strategies: the overexpression of a wild Arachis α-expansin transgene (AdEXPA24) and the dsRNA-mediated silencing of an endogenous soybean polygalacturonase gene (GmPG). AdEXPA24 overexpression in hairy roots of RKN-susceptible soybean cultivar significantly reduced nematode infection by approximately 47%, whereas GmPG downregulation caused an average decrease of 37%. This novel system of hairy root induction from detached leaves showed to be an efficient, practical, fast, and low-cost method suitable for high throughput in root analysis of candidate genes in soybean.
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Affiliation(s)
| | - Fabrício Arraes
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
| | | | | | - Bruno Paes Melo
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
| | - Carolina Vianna Morgante
- Instituto Nacional de Ciência e Tecnologia-INCT PlantStress Biotech-Embrapa, Brasília, DF, Brazil
- EMBRAPA Semiárido, Petrolina, PE, Brazil
| | - Mario Alfredo Passos Saraiva
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
- Instituto Nacional de Ciência e Tecnologia-INCT PlantStress Biotech-Embrapa, Brasília, DF, Brazil
| | - Maria Fátima Grossi-de-Sá
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
- Instituto Nacional de Ciência e Tecnologia-INCT PlantStress Biotech-Embrapa, Brasília, DF, Brazil
| | - Patricia Messenberg Guimaraes
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
- Instituto Nacional de Ciência e Tecnologia-INCT PlantStress Biotech-Embrapa, Brasília, DF, Brazil
| | - Ana Cristina Miranda Brasileiro
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
- Instituto Nacional de Ciência e Tecnologia-INCT PlantStress Biotech-Embrapa, Brasília, DF, Brazil
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14
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Liu Y, Chen W, Liu L, Su Y, Li Y, Jia W, Jiao B, Wang J, Yang F, Dong F, Chai J, Zhao H, Lv M, Li Y, Zhou S. Genome-wide identification and expression analysis of calmodulin and calmodulin-like genes in wheat ( Triticum aestivum L.). PLANT SIGNALING & BEHAVIOR 2022; 17:2013646. [PMID: 35034573 PMCID: PMC8959510 DOI: 10.1080/15592324.2021.2013646] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 05/25/2023]
Abstract
Calmodulin (CaM) and calmodulin-like (CML) genes are widely involved in plant growth and development and mediating plant stress tolerance. However, the whole genome scale studies about CaM and CML gene families have not been done in wheat, and the possible functions of most wheat CaM/CML gene members are still unknown. In this study, a total of 18 TaCaM and 230 TaCML gene members were identified in wheat genome. Among these genes, 28 TaCaM/CML gene members have 74 duplicated copies, while 21 genes have 48 transcript variants, resulting in 321 putative TaCaM/CML transcripts totally. Phylogenetic tree analysis showed that they can be classified into 7 subfamilies. Similar gene structures and protein domains can be found in members of the same gene cluster. The TaCaM/CML genes were spread among all 21 chromosomes with unbalanced distributions, while most of the gene clusters contained 3 homoeologous genes located in the same homoeologous chromosome group. Synteny analysis showed that most of TaCaM/CMLs gene members can be found with 1-4 paralogous genes in T. turgidum and Ae. Tauschii. High numbers of cis-acting elements related to plant hormones and stress responses can be observed in the promoters of TaCaM/CMLs. The spatiotemporal expression patterns showed that most of the TaCaM/TaCML genes can be detected in at least one tissue. The expression levels of TaCML17, 21, 30, 50, 59 and 75 in the root or shoot can be up-regulated by abiotic stresses, suggesting that TaCML17, 21, 30, 50, 59 and 75 may be related with responses to abiotic stresses in wheat. The spatiotemporal expression patterns of TaCaM/CML genes indicated they may be involved widely in wheat growth and development. Our results provide important clues for exploring functions of TaCaMs/CMLs in growth and development as well as responses to abiotic stresses in wheat in the future.
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Affiliation(s)
- Yongwei Liu
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
| | - Wenye Chen
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
| | | | - Yuhuan Su
- Handan Academy of Agricultural Sciences, Handan, China
| | - Yuan Li
- Hebei Seed Station, Shijiazhuang, China
| | - Weizhe Jia
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
| | - Bo Jiao
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
| | - Jiao Wang
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
| | - Fan Yang
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
| | - Fushuang Dong
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
| | - Jianfang Chai
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
| | - He Zhao
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
| | - Mengyu Lv
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
| | - Yanyi Li
- NCPC GeneTech Biotechnology Co. Ltd, Shijiazhuang, China
| | - Shuo Zhou
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences/Plant Genetic Engineering Center of Hebei Province, Shijiazhuang, China
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15
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Singh AK, Raina SK, Kumar M, Aher L, Ratnaparkhe MB, Rane J, Kachroo A. Modulation of GmFAD3 expression alters abiotic stress responses in soybean. PLANT MOLECULAR BIOLOGY 2022; 110:199-218. [PMID: 35779188 DOI: 10.1007/s11103-022-01295-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
KEY MESSAGE This study focused on enhancing resilience of soybean crops to drought and salinity stresses by overexpression of GmFAD3A gene, which plays an important role in modulating membrane fluidity and ultimately influence plants response to various abiotic stresses. Fatty acid desaturases (FADs) are a class of enzymes that mediate desaturation of fatty acids by introducing double bonds. They play an important role in modulating membrane fluidity in response to various abiotic stresses. However, a comprehensive analysis of GmFAD3 in drought and salinity stress tolerance in soybean is lacking. We used bean pod mottle virus (BPMV)-based vector for achieving rapid and efficient overexpression as well as silencing of Omega-3 Fatty Acid Desaturase gene from Glycine max (GmFAD3) to assess the functional role of GmFAD3 in abiotic stress responses in soybean. Higher levels of recombinant BPMV-GmFAD3A transcripts were detected in overexpressing soybean plants. Overexpression of GmFAD3A in soybean resulted in increased levels of jasmonic acid and higher expression of GmWRKY54 as compared to mock-inoculated, vector-infected and FAD3-silenced soybean plants under drought and salinity stress conditions. The GmFAD3A-overexpressing plants showed higher levels of chlorophyll content, efficient photosystem-II, relative water content, transpiration rate, stomatal conductance, proline content and also cooler canopy under drought and salinity stress conditions as compared to mock-inoculated, vector-infected and FAD3-silenced soybean plants. Results from the current study revealed that GmFAD3A-overexpressing soybean plants exhibited tolerance to drought and salinity stresses. However, soybean plants silenced for GmFAD3 were vulnerable to drought and salinity stresses.
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Affiliation(s)
- Ajay Kumar Singh
- National Institute of Abiotic Stress Management, Baramati, Pune, Maharashtra, 413115, India.
| | - Susheel Kumar Raina
- National Bureau of Plant Genetic Resources, Regional Station, Srinagar, Jammu & Kashmir, 191132, India
| | - Mahesh Kumar
- National Institute of Abiotic Stress Management, Baramati, Pune, Maharashtra, 413115, India
| | - Lalitkumar Aher
- National Institute of Abiotic Stress Management, Baramati, Pune, Maharashtra, 413115, India
| | | | - Jagadish Rane
- National Institute of Abiotic Stress Management, Baramati, Pune, Maharashtra, 413115, India
| | - Aardra Kachroo
- Department of Plant Pathology, University of Kentucky, Lexington, KY, 40546, USA
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16
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Li Y, Zhang H, Dong F, Zou J, Gao C, Zhu Z, Liu Y. Multiple roles of wheat calmodulin genes during stress treatment and TaCAM2-D as a positive regulator in response to drought and salt tolerance. Int J Biol Macromol 2022; 220:985-997. [PMID: 36027985 DOI: 10.1016/j.ijbiomac.2022.08.124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 08/14/2022] [Accepted: 08/17/2022] [Indexed: 11/05/2022]
Abstract
Calmodulin (CaM) and calmodulin-like (CML) proteins are the most prominent calcium (Ca2+) sensing proteins involved in Ca2+-signaling processes. However, the function of these calcium sensors in wheat remains unclear. In this study, 15 TaCAMs and 113 TaCMLs were identified from the wheat reference genome. The analysis of cis-acting elements and expression patterns showed that TaCAMs might play an important role in response to abiotic and biotic stresses. TaCAM2-D gene was found to be significantly upregulated under drought and salt stresses, and thus, it was selected to further explore the biological function. Moreover, TaCAM2-D was observed to be localized in the nucleus, membrane and cytoplasm. Overexpression of TaCAM2-D in Arabidopsis conferred greater tolerance to drought and salt. The prediction analysis, the yeast two-hybrid analysis, and bimolecular fluorescence complementation assay indicated that TaCAM2-D interacted with TaMPK8, which is one of the wheat mitogen-activated protein kinases. Thus, the current study provides insights into the understanding of the TaCAM and TaCML genes in wheat.
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Affiliation(s)
- Yaqian Li
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wheat Disease Biology Research Station for Central China, Wuhan, China
| | - Huadong Zhang
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wheat Disease Biology Research Station for Central China, Wuhan, China
| | - Feiyan Dong
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wheat Disease Biology Research Station for Central China, Wuhan, China
| | - Juan Zou
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wheat Disease Biology Research Station for Central China, Wuhan, China
| | - Chunbao Gao
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wheat Disease Biology Research Station for Central China, Wuhan, China
| | - Zhanwang Zhu
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wheat Disease Biology Research Station for Central China, Wuhan, China.
| | - Yike Liu
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wheat Disease Biology Research Station for Central China, Wuhan, China.
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17
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Fu M, Wu C, Li X, Ding X, Guo F. Genome-Wide Identification and Expression Analysis of CsCaM/CML Gene Family in Response to Low-Temperature and Salt Stresses in Chrysanthemum seticuspe. PLANTS 2022; 11:plants11131760. [PMID: 35807712 PMCID: PMC9268918 DOI: 10.3390/plants11131760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/27/2022] [Accepted: 06/27/2022] [Indexed: 11/29/2022]
Abstract
Calmodulin (CaM) and calmodulin-like proteins (CML) act as significant Ca2+ sensors binding Ca2+ with EF-hand motifs and have been reported to be involved in various environmental stresses in plants. In this study, calmodulin CsCaM/CML gene family members were identified based on the genome of Chrysanthemum seticuspe published recently; a phylogenetic tree was constructed; gene structures and chromosomal locations of CsCaM/CML were depicted; cis-acting regulatory elements were predicted; collinearity and duplicate events of CaM/CML were analyzed using MCScanX software; and the expression levels of CsCaM/CML in response to abiotic stress were analyzed, based on the published RNA-seq data. We identified 86 CsCaM/CML (4 CsCaMs and 82 CsCMLs) genes in total. Promoter sequences of CsCaM/CML contained elements related to abiotic stresses (including low-temperature and anaerobic stresses) and plant hormones (including abscisic acid (ABA), MeJA, and salicylic acid). CsCaM/CML genes were distributed on nine chromosomes unevenly. Collinearity analysis indicated that recent segmental duplications significantly enlarged the scale of the CML family in C. seticuspe. Four CsCMLs (CsCML14, CsCML50, CsCML65, and CsCML79) were statistically differentially regulated under low-temperature and salt stress compared with those in the normal condition. These results indicate diverse roles of CsCaM/CML in plant development and in response to environmental stimuli in C. seticuspe.
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Affiliation(s)
| | | | | | | | - Fangqi Guo
- Correspondence: Correspondence: ; Tel.: +86-0571-8640-4013
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18
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Ketehouli T, Nguyen Quoc VH, Dong J, Do H, Li X, Wang F. Overview of the roles of calcium sensors in plants’ response to osmotic stress signalling. FUNCTIONAL PLANT BIOLOGY : FPB 2022; 49:589-599. [PMID: 35339206 DOI: 10.1071/fp22012] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 03/09/2022] [Indexed: 06/14/2023]
Abstract
Calcium signals serve an important function as secondary messengers between cells in various biological processes due to their robust homeostatic mechanism, maintaining an intracellular free Ca2+ concentration. Plant growth, development, and biotic and abiotic stress are all regulated by Ca2+ signals. Ca2+ binding proteins decode and convey the messages encoded by Ca2+ ions. In the presence of high quantities of Mg2+ and monovalent cations, such sensors bind to Ca2+ ions and modify their conformation in a Ca2+ -dependent manner. Calcium-dependent protein kinases (CPKs), calmodulins (CaMs), and calcineurin B-like proteins are all calcium sensors (CBLs). To transmit Ca2+ signals, CPKs, CBLs, and CaMs interact with target proteins and regulate the expression of their genes. These target proteins may be protein kinases, metabolic enzymes, or cytoskeletal-associated proteins. Beyond its role in plant nutrition as a macroelement and its involvement in the plant cell wall structure, calcium modulates many aspects of development, growth and adaptation to environmental constraints such as drought, salinity and osmotic stresses. This review summarises current knowledge on calcium sensors in plant responses to osmotic stress signalling.
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Affiliation(s)
- Toi Ketehouli
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, China
| | - Viet Hoang Nguyen Quoc
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, China
| | - Jinye Dong
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, China
| | - Hoaithuong Do
- Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Xiaowei Li
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, China
| | - Fawei Wang
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, China
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19
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Aleynova OA, Suprun AR, Ananev AA, Nityagovsky NN, Ogneva ZV, Dubrovina AS, Kiselev KV. Effect of Calmodulin-like Gene (CML) Overexpression on Stilbene Biosynthesis in Cell Cultures of Vitis amurensis Rupr. PLANTS 2022; 11:plants11020171. [PMID: 35050059 PMCID: PMC8778512 DOI: 10.3390/plants11020171] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 01/05/2022] [Indexed: 12/23/2022]
Abstract
Stilbenes are plant phenolics known to rapidly accumulate in grapevine and other plants in response to injury or pathogen attack and to exhibit a great variety of healing beneficial effects. It has previously been shown that several calmodulin-like protein (CML) genes were highly up-regulated in cell cultures of wild-growing grapevine Vitis amurensis Rupr. in response to stilbene-modulating conditions, such as stress hormones, UV-C, and stilbene precursors. Both CML functions and stilbene biosynthesis regulation are still poorly understood. In this study, we investigated the effect of overexpression of five VaCML genes on stilbene and biomass accumulation in the transformed cell cultures of V. amurensis. We obtained 16 transgenic cell lines transformed with the VaCML52, VaCML65, VaCML86, VaCML93, and VaCML95 genes (3–4 independent lines per gene) under the control of the double CaMV 35S promoter. HPLC-MS analysis showed that overexpression of the VaCML65 led to a considerable and consistent increase in the content of stilbenes of 3.8–23.7 times in all transformed lines in comparison with the control calli, while biomass accumulation was not affected. Transformation of the V. amurensis cells with other analyzed VaCML genes did not lead to a consistent and considerable effect on stilbene biosynthesis in the cell lines. The results indicate that the VaCML65 gene is implicated in the signaling pathway regulating stilbene biosynthesis as a strong positive regulator and can be useful in viticulture and winemaking for obtaining grape cultivars with a high content of stilbenes and stress resistance.
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Affiliation(s)
- Olga A. Aleynova
- Laboratory of Biotechnology, Federal Scientific Center of the East Asia Terrestrial Biodiversity, FEB RAS, 690022 Vladivostok, Russia; (O.A.A.); (A.R.S.); (A.A.A.); (N.N.N.); (Z.V.O.); (A.S.D.)
| | - Andrey R. Suprun
- Laboratory of Biotechnology, Federal Scientific Center of the East Asia Terrestrial Biodiversity, FEB RAS, 690022 Vladivostok, Russia; (O.A.A.); (A.R.S.); (A.A.A.); (N.N.N.); (Z.V.O.); (A.S.D.)
| | - Alexey A. Ananev
- Laboratory of Biotechnology, Federal Scientific Center of the East Asia Terrestrial Biodiversity, FEB RAS, 690022 Vladivostok, Russia; (O.A.A.); (A.R.S.); (A.A.A.); (N.N.N.); (Z.V.O.); (A.S.D.)
- Department of Biochemistry and Biotechnology, Institute of the World Ocean, Far Eastern Federal University, 690090 Vladivostok, Russia
| | - Nikolay N. Nityagovsky
- Laboratory of Biotechnology, Federal Scientific Center of the East Asia Terrestrial Biodiversity, FEB RAS, 690022 Vladivostok, Russia; (O.A.A.); (A.R.S.); (A.A.A.); (N.N.N.); (Z.V.O.); (A.S.D.)
| | - Zlata V. Ogneva
- Laboratory of Biotechnology, Federal Scientific Center of the East Asia Terrestrial Biodiversity, FEB RAS, 690022 Vladivostok, Russia; (O.A.A.); (A.R.S.); (A.A.A.); (N.N.N.); (Z.V.O.); (A.S.D.)
| | - Alexandra S. Dubrovina
- Laboratory of Biotechnology, Federal Scientific Center of the East Asia Terrestrial Biodiversity, FEB RAS, 690022 Vladivostok, Russia; (O.A.A.); (A.R.S.); (A.A.A.); (N.N.N.); (Z.V.O.); (A.S.D.)
| | - Konstantin V. Kiselev
- Laboratory of Biotechnology, Federal Scientific Center of the East Asia Terrestrial Biodiversity, FEB RAS, 690022 Vladivostok, Russia; (O.A.A.); (A.R.S.); (A.A.A.); (N.N.N.); (Z.V.O.); (A.S.D.)
- Correspondence: ; Tel.: +8-423-2310410; Fax: +8-4232-310193
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20
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Xun H, Zhang X, Yu J, Pang J, Wang S, Liu B, Dong Y, Jiang L, Guo D. Analysis of expression characteristics of soybean leaf and root tissue-specific promoters in Arabidopsis and soybean. Transgenic Res 2021; 30:799-810. [PMID: 34115286 DOI: 10.1007/s11248-021-00266-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 06/05/2021] [Indexed: 10/21/2022]
Abstract
The characterization of tissue-specific promoters is critical for studying the functions of genes in a given tissue/organ. To study tissue-specific promoters in soybean, we screened tissue-specific expressed genes using published soybean RNA-Seq-based transcriptome data coupled with RT-PCR analysis. We cloned the promoters of three genes, GmADR1, GmBTP1, and GmGER1, and constructed their corresponding β-Glucuronidase (GUS) promoter-GUS reporter vectors. We generated transgenic Arabidopsis plants and examined the expression patterns of these promoters by GUS staining and RT-PCR analysis. We also transformed the promoter-GUS reporter vectors into soybean to obtain hairy roots, and examined promoter expression by GUS staining. We found a root-specific expression pattern of GmADR1 and GmBTP1 in both Arabidopsis and soybean, and the promoter of GmGER1 showed a leaf-specific pattern in transgenic Arabidopsis plants. To test the potential utility of these promoters in soybean improvement by transgenic means, we used the GmADR1 promoter to drive expression of a salt resistance gene in soybean, GmCaM4, by generating transgenic soybean plants. We found that the transgenic plants had significantly enhanced salt tolerance compared to non-transformed wild-type, suggesting that introducing endogenous promoters by transgenic means can drive the expression of functional genes in specific tissues and organs in soybean.
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Affiliation(s)
- Hongwei Xun
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, 130033, Changchun, China
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, 130024, Changchun, China
| | - Xue Zhang
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, 130024, Changchun, China
| | - Jiamiao Yu
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, 130024, Changchun, China
| | - Jinsong Pang
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, 130024, Changchun, China
| | - Shucai Wang
- Laboratory of Plant Molecular Genetics & Crop Gene Editing, School of Life Sciences, Linyi University, 276000, Linyi, China
| | - Bao Liu
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, 130024, Changchun, China
| | - Yingshan Dong
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, 130033, Changchun, China
| | - Lili Jiang
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, 130024, Changchun, China.
| | - Dongquan Guo
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, 130033, Changchun, China.
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21
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Patra N, Hariharan S, Gain H, Maiti MK, Das A, Banerjee J. TypiCal but DeliCate Ca ++re: Dissecting the Essence of Calcium Signaling Network as a Robust Response Coordinator of Versatile Abiotic and Biotic Stimuli in Plants. FRONTIERS IN PLANT SCIENCE 2021; 12:752246. [PMID: 34899779 PMCID: PMC8655846 DOI: 10.3389/fpls.2021.752246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/27/2021] [Indexed: 06/14/2023]
Abstract
Plant growth, development, and ultimately crop productivity are largely impacted by the interaction of plants with different abiotic and biotic factors throughout their life cycle. Perception of different abiotic stresses, such as salt, cold, drought, heat, and heavy metals, and interaction with beneficial and harmful biotic agents by plants lead to transient, sustained, or oscillatory changes of [calcium ion, Ca2+]cyt within the cell. Significant progress has been made in the decoding of Ca2+ signatures into downstream responses to modulate differential developmental and physiological responses in the whole plant. Ca2+ sensor proteins, mainly calmodulins (CaMs), calmodulin-like proteins (CMLs), and others, such as Ca2+-dependent protein kinases (CDPKs), calcineurin B-like proteins (CBLs), and calmodulin-binding transcription activators (CAMTAs) have played critical roles in coupling the specific stress stimulus with an appropriate response. This review summarizes the current understanding of the Ca2+ influx and efflux system in plant cells and various Ca2+ binding protein-mediated signal transduction pathways that are delicately orchestrated to mitigate abiotic and biotic stresses. The probable interactions of different components of Ca2+ sensor relays and Ca2+ sensor responders in response to various external stimuli have been described diagrammatically focusing on established pathways and latest developments. Present comprehensive insight into key components of the Ca2+ signaling toolkit in plants can provide an innovative framework for biotechnological manipulations toward crop improvability in near future.
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Affiliation(s)
- Neelesh Patra
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Shruthi Hariharan
- Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Hena Gain
- Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Mrinal K. Maiti
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Arpita Das
- Department of Genetics and Plant Breeding, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, India
| | - Joydeep Banerjee
- Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur, India
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22
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Wang Z, Li N, Yu Q, Wang H. Genome-Wide Characterization of Salt-Responsive miRNAs, circRNAs and Associated ceRNA Networks in Tomatoes. Int J Mol Sci 2021; 22:12238. [PMID: 34830118 PMCID: PMC8625345 DOI: 10.3390/ijms222212238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/08/2021] [Accepted: 11/08/2021] [Indexed: 11/28/2022] Open
Abstract
Soil salinization is a major environmental stress that causes crop yield reductions worldwide. Therefore, the cultivation of salt-tolerant crops is an effective way to sustain crop yield. Tomatoes are one of the vegetable crops that are moderately sensitive to salt stress. Global market demand for tomatoes is huge and growing. In recent years, the mechanisms of salt tolerance in tomatoes have been extensively investigated; however, the molecular mechanism through which non-coding RNAs (ncRNAs) respond to salt stress is not well understood. In this study, we utilized small RNA sequencing and whole transcriptome sequencing technology to identify salt-responsive microRNAs (miRNAs), messenger RNAs (mRNAs), and circular RNAs (circRNAs) in roots of M82 cultivated tomato and Solanum pennellii (S. pennellii) wild tomato under salt stress. Based on the theory of competitive endogenous RNA (ceRNA), we also established several salt-responsive ceRNA networks. The results showed that circRNAs could act as miRNA sponges in the regulation of target mRNAs of miRNAs, thus participating in the response to salt stress. This study provides insights into the mechanisms of salt tolerance in tomatoes and serves as an effective reference for improving the salt tolerance of salt-sensitive cultivars.
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Affiliation(s)
- Zhongyu Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
| | - Ning Li
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China;
- Key Laboratory of Horticulture Crop Genomics and Genetic Improvement in Xinjiang, Urumqi 830091, China
- College of Horticulture, Xinjiang Agricultural University, Urumqi 830052, China
| | - Qinghui Yu
- Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China;
| | - Huan Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
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23
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Jamra G, Agarwal A, Singh N, Sanyal SK, Kumar A, Pandey GK. Ectopic expression of finger millet calmodulin confers drought and salinity tolerance in Arabidopsis thaliana. PLANT CELL REPORTS 2021; 40:2205-2223. [PMID: 34250550 DOI: 10.1007/s00299-021-02743-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 06/24/2021] [Indexed: 06/13/2023]
Abstract
Overexpression of finger millet calmodulin imparts drought and salt tolerance in plants. Drought and salinity are major environmental stresses which affect crop productivity and therefore are major hindrance in feeding growing population world-wide. Calcium (Ca2+) signaling plays a crucial role during the plant's response to these stress stimuli. Calmodulin (CaM), a crucial Ca2+sensor, is involved in transducing the signal downstream in various physiological, developmental and stress responses by modulating a plethora of target proteins. The role of CaM has been well established in the model plant Arabidopsis thaliana for regulating various developmental processes, stress signaling and ion transport. In the current study, we investigate the CaM of Eleusine coracana (common name finger millet, known especially for its drought tolerance and superior Ca2+ content). In-silico analysis showed that Eleusine CaM (EcCaM) has greater similarity to rice CaM as compared to Arabidopsis CaM due to the presence of highly conserved four EF-hand domains. To decipher the in-planta function of EcCaM, we have adopted the gain-of-function approach by generating the 35S::EcCaM over-expression transgenic in Arabidopsis. Overexpression of EcCaM in Arabidopsis makes the plant tolerant to polyethylene glycol (PEG) induced drought and salt stress (NaCl) as demonstrated by post-germination based phenotypic assay, ion leakage, MDA and proline estimation, ROS detection under stressed and normal conditions. Moreover, EcCaM overexpression leads to hypersensitivity toward exogenously applied ABA at the seed germination stage. These findings reveal that EcCaM mediates tolerance to drought and salinity stress. Also, our results indicate that EcCaM is involved in modulating ABA signaling. Summarizing our results, we report for the first time that EcCaM is involved in modulating plants response to stress and this information can be used for the generation of future-ready crops that can tolerate a wide range of abiotic stresses.
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Affiliation(s)
- Gautam Jamra
- Department of Molecular Biology and Genetic Engineering, GBPUA&T, Pantnagar, Uttarakhand, India
- Lab No. 302, Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Marg, South Campus, South Moti Bagh, Dhaula Kuan, New Delhi, 110021, India
| | - Aparna Agarwal
- Department of Molecular Biology and Genetic Engineering, GBPUA&T, Pantnagar, Uttarakhand, India
| | - Nidhi Singh
- Lab No. 302, Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Marg, South Campus, South Moti Bagh, Dhaula Kuan, New Delhi, 110021, India
| | - Sibaji K Sanyal
- Lab No. 302, Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Marg, South Campus, South Moti Bagh, Dhaula Kuan, New Delhi, 110021, India
| | - Anil Kumar
- Department of Molecular Biology and Genetic Engineering, GBPUA&T, Pantnagar, Uttarakhand, India.
- Rani Lakshmi Bai Central Agriculture University, NH-75, Near Pahuj Dam, Gwalior Road, Jhansi, 284003, Uttar Pradesh, India.
| | - Girdhar K Pandey
- Lab No. 302, Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Marg, South Campus, South Moti Bagh, Dhaula Kuan, New Delhi, 110021, India.
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24
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Yang J, Ji L, Liu S, Jing P, Hu J, Jin D, Wang L, Xie G. The CaM1-associated CCaMK-MKK1/6 cascade positively affects lateral root growth via auxin signaling under salt stress in rice. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:6611-6627. [PMID: 34129028 DOI: 10.1093/jxb/erab287] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 06/12/2021] [Indexed: 06/12/2023]
Abstract
Ca2+/calmodulin (CaM)-dependent protein kinases (CCaMKs) and mitogen-activated protein kinase kinases (MAPKKs) are two types of kinases that regulate salt stress response in plants. It remains unclear, however, how they cooperatively affect lateral root growth under salt stress. Here, two conserved phosphorylation sites (S102 and T118) of OsCaM1 were identified, and found to affect the ability to bind to Ca2+in vitro and the kinase activity of OsCCaMK in vivo. OsCCaMK specifically interacted with OsMKK1/6 in a Ca2+/CaM-dependent manner. In vitro kinase and in vivo dual-luciferase assays revealed that OsCCaMK phosphorylated OsMKK6 while OsMKK1 phosphorylated OsCCaMK. Overexpression and antisense-RNA repression expression of OsCaM1-1, and CRISPR/Cas9-mediated gene editing mutations of OsMKK1, OsMKK6, and OsMKK1/6 proved that OsCaM1-1, OsMKK1, and OsMKK6 enhanced the auxin content in roots and lateral root growth under salt stress. Consistently, OsCaM1-1, OsMKK1, and OsMKK6 regulated the transcript levels of the genes of this cascade, and salt stress-related and lateral root growth-related auxin signaling under salt stress in rice roots. These findings demonstrate that the OsCaM1-associated OsCCaMK-OsMKK1/6 cascade plays a critical role in recruiting auxin signaling in rice roots. These results also provide new insight into the regulatory mechanism of the CaM-mediated phosphorylation relay cascade to auxin signaling in lateral root growth under salt stress in plants.
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Affiliation(s)
- Jun Yang
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Lingxiao Ji
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Shuang Liu
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Pei Jing
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jin Hu
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Deming Jin
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Lingqiang Wang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China
| | - Guosheng Xie
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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25
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The Same against Many: AtCML8, a Ca 2+ Sensor Acting as a Positive Regulator of Defense Responses against Several Plant Pathogens. Int J Mol Sci 2021; 22:ijms221910469. [PMID: 34638807 PMCID: PMC8508799 DOI: 10.3390/ijms221910469] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/21/2021] [Accepted: 09/24/2021] [Indexed: 01/11/2023] Open
Abstract
Calcium signals are crucial for the activation and coordination of signaling cascades leading to the establishment of plant defense mechanisms. Here, we studied the contribution of CML8, an Arabidopsis calmodulin-like protein in response to Ralstonia solanacearum and to pathogens with different lifestyles, such as Xanthomonas campestris pv. campestris and Phytophtora capsici. We used pathogenic infection assays, gene expression, RNA-seq approaches, and comparative analysis of public data on CML8 knockdown and overexpressing Arabidopsis lines to demonstrate that CML8 contributes to defense mechanisms against pathogenic bacteria and oomycetes. CML8 gene expression is finely regulated at the root level and manipulated during infection with Ralstonia, and CML8 overexpression confers better plant tolerance. To understand the processes controlled by CML8, genes differentially expressed at the root level in the first hours of infection have been identified. Overexpression of CML8 also confers better tolerance against Xanthomonas and Phytophtora, and most of the genes differentially expressed in response to Ralstonia are differentially expressed in these different pathosystems. Collectively, CML8 acts as a positive regulator against Ralstonia solanaceraum and against other vascular or root pathogens, suggesting that CML8 is a multifunctional protein that regulates common downstream processes involved in the defense response of plants to several pathogens.
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26
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He X, Liu W, Li W, Liu Y, Wang W, Xie P, Kang Y, Liao L, Qian L, Liu Z, Guan C, Guan M, Hua W. Genome-wide identification and expression analysis of CaM/CML genes in Brassica napus under abiotic stress. JOURNAL OF PLANT PHYSIOLOGY 2020; 255:153251. [PMID: 33129076 DOI: 10.1016/j.jplph.2020.153251] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 05/25/2023]
Abstract
Calmodulin (CaM) and calmodulin-like (CML) proteins are primary calcium (Ca2+) sensors and are involved in the regulation of plant development and stress responses by converting calcium signals into transcriptional responses, protein phosphorylation, or metabolic changes. However, the characterization and expression profiling of CaM/CML genes in Brassica napus remain limited. The present study reports that 25 BnaCaM and 168 BnaCML genes were identified in B. napus. The phylogenetics, gene structures, gene motifs, gene chromosomal locations, syntenic and Ka/Ks analysis, promoter cis-acting elements, and expression characteristics in various organs and under abiotic stress were evaluated. The phylogenetic results revealed a total of 11 subgroups, including one unique clade of CaMs distinct from CMLs. Most of group I (CaM), II, III, and X members are intron rich, while members from the other seven groups are intron-less. The majority of CaM/CML proteins have four EF-hands. Syntenic analysis showed that 91.3 % orthologous CaM/CML gene pairs between B. rapa and B. oleracea were retained as homologous gene pairs in B. napus. Ka/Ks analysis indicated that the majority of BnaCaM/CML experienced purifying selection. Expression analysis showed that BnaCaMs genes are highly and ubiquitously expressed in all of the organs and tissues examined, while distinct BnaCMLs are expressed specifically in particular organs and tissues. In total, 129 BnaCaM/CML were induced by abiotic stress and phytohormones. BnaCMLs from group IV, VI, VIII, and X were strongly induced by freezing treatment, but were not or just slightly induced by chilling treatment. The present study is the first to analyze the CaM/CML gene family in B. napus, which is useful for understanding the functions of the BnaCaM/CML in modulating plant responses to abiotic stress, especially freezing stress.
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Affiliation(s)
- Xin He
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China; Oil Crops Research, Hunan Agricultural University, Changsha, Hunan, 410128, China; Hunan Branch of National Oilseed Crops Improvement Center, Changsha, Hunan, 410128, China
| | - Wei Liu
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Wenqian Li
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Yan Liu
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Weiping Wang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Pan Xie
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Yu Kang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Li Liao
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Lunwen Qian
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Zhongsong Liu
- Oil Crops Research, Hunan Agricultural University, Changsha, Hunan, 410128, China; Hunan Branch of National Oilseed Crops Improvement Center, Changsha, Hunan, 410128, China
| | - Chunyun Guan
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China; Oil Crops Research, Hunan Agricultural University, Changsha, Hunan, 410128, China; Hunan Branch of National Oilseed Crops Improvement Center, Changsha, Hunan, 410128, China
| | - Mei Guan
- Oil Crops Research, Hunan Agricultural University, Changsha, Hunan, 410128, China; Hunan Branch of National Oilseed Crops Improvement Center, Changsha, Hunan, 410128, China.
| | - Wei Hua
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China; Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan, 430062, China.
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Abstract
Drought is a severe environmental constraint, which significantly affects plant growth, productivity, and quality. Plants have developed specific mechanisms that perceive the stress signals and respond to external environmental changes via different mitigation strategies. Abscisic acid (ABA), being one of the phytohormones, serves as an important signaling mediator for plants’ adaptive response to a variety of environmental stresses. ABA triggers many physiological processes, including bud dormancy, seed germination, stomatal closure, and transcriptional and post-transcriptional regulation of stress-responsive gene expression. The site of its biosynthesis and action must be clarified to understand the signaling network of ABA. Various studies have documented multiple sites for ABA biosynthesis, their transporter proteins in the plasma membrane, and several components of ABA-dependent signaling pathways, suggesting that the ABA response to external stresses is a complex networking mechanism. Knowing about stress signals and responses will increase our ability to enhance crop stress tolerance through the use of various advanced techniques. This review will elaborate on the ABA biosynthesis, transportation, and signaling pathways at the molecular level in response to drought stress, which will add a new insight for future studies.
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Sun X, Pan B, Wang Y, Xu W, Zhang S. Exogenous Calcium Improved Resistance to Botryosphaeria dothidea by Increasing Autophagy Activity and Salicylic Acid Level in Pear. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2020; 33:1150-1160. [PMID: 32432513 DOI: 10.1094/mpmi-04-20-0101-r] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Pear ring rot, caused by Botryosphaeria dothidea, is one of the most serious diseases in pear. Calcium (Ca2+) was reported to play a key role in the plant defense response. Here, we found that exogenous calcium could enhance resistance to B. dothidea in pear leaves. Less H2O2 and O2- but more activated reactive oxygen species scavenge enzymes accumulated in calcium-treated leaves than in H2O-treated leaves. Moreover, the increased level of more ascorbic acid-glutathione was maintained by Ca2+ treatment under pathogen infection. The expression of core autophagy-related genes and autophagosome formations were enhanced in Ca2+-treated leaves. Silencing of PbrATG5 in Pyrus betulaefolia conferred sensitivity to inoculation, which was only slightly recovered by Ca2+ treatment. Moreover, the salicylic acid (SA) level and SA-related gene expression were induced more strongly by B. dothidea in Ca2+-treated leaves than in H2O-treated leaves. Taken together, these results demonstrated that exogenous Ca2+ enhanced resistance to B. dothidea by increasing autophagic activity and SA accumulation. Our findings reveal a new mechanism of Ca2+ in increasing the tolerance of pear to B. dothidea infection.
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Affiliation(s)
- Xun Sun
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Bisheng Pan
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Yun Wang
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Wenyu Xu
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Shaoling Zhang
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
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Shen Q, Fu L, Su T, Ye L, Huang L, Kuang L, Wu L, Wu D, Chen ZH, Zhang G. Calmodulin HvCaM1 Negatively Regulates Salt Tolerance via Modulation of HvHKT1s and HvCAMTA4. PLANT PHYSIOLOGY 2020; 183:1650-1662. [PMID: 32554472 PMCID: PMC7401103 DOI: 10.1104/pp.20.00196] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 06/05/2020] [Indexed: 05/18/2023]
Abstract
Calcium (Ca2+) signaling modulates sodium (Na+) transport in plants; however, the role of the Ca2+ sensor calmodulin (CaM) in salt tolerance is elusive. We previously identified a salt-responsive calmodulin (HvCaM1) in a proteome study of barley (Hordeum vulgare) roots. Here, we employed bioinformatic, physiological, molecular, and biochemical approaches to determine the role of HvCaM1 in barley salt tolerance. CaM1s are highly conserved in green plants and probably originated from ancestors of green algae of the Chlamydomonadales order. HvCaM1 was mainly expressed in roots and was significantly up-regulated in response to long-term salt stress. Localization analyses revealed that HvCaM1 is an intracellular signaling protein that localizes to the root stele and vascular systems of barley. After treatment with 200 mm NaCl for 4 weeks, HvCaM1 knockdown (RNA interference) lines showed significantly larger biomass but lower Na+ concentration, xylem Na+ loading, and Na+ transportation rates in shoots compared with overexpression lines and wild-type plants. Thus, we propose that HvCaM1 is involved in regulating Na+ transport, probably via certain class I high-affinity potassium transporter (HvHKT1;5 and HvHKT1;1)-mediated Na+ translocation in roots. Moreover, we demonstrated that HvCaM1 interacted with a CaM-binding transcription activator (HvCAMTA4), which may be a critical factor in the regulation of HKT1s in barley. We conclude that HvCaM1 negatively regulates salt tolerance, probably via interaction with HvCAMTA4 to modulate the down-regulation of HvHKT1;5 and/or the up-regulation of HvHKT1;1 to reduce shoot Na+ accumulation under salt stress in barley.
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Affiliation(s)
- Qiufang Shen
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Liangbo Fu
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Tingting Su
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Lingzhen Ye
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Lu Huang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Liuhui Kuang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Liyuan Wu
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Dezhi Wu
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zhong-Hua Chen
- School of Science, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales 2751, Australia
- Collaborative Innovation Centre for Grain Industry, College of Agriculture, Yangtze University, Jingzhou 434025, China
| | - Guoping Zhang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
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Shi J, Du X. Identification, characterization and expression analysis of calmodulin and calmodulin-like proteins in Solanum pennellii. Sci Rep 2020; 10:7474. [PMID: 32366918 PMCID: PMC7198499 DOI: 10.1038/s41598-020-64178-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 02/26/2020] [Indexed: 01/09/2023] Open
Abstract
In plants, the calmodulin (CaM) proteins is an important calcium-binding protein, which play a crucial role in both regulating plant growth and development, as well as in the resistance mechanisms to various biotic and abiotic stresses. However, there is limited knowledge available on the CaM family functions in Solanum pennellii, a wild tomato species utilized as a genetic resource for cultivated tomatoes. In this study, 6 CaM (SpCaM) and 45 CaM-like (SpCML) genes from Solanum pennellii were selected for bioinformatics analysis to obtain insights into their phylogenetic relationships, gene structures, conserved motifs, chromosomal locations, and promoters. The results showed that the 6 SpCaM proteins contained 4 EF-hand domains each, and the 45 SpCML proteins had 2-4 EF-hand domains. The 51 CaM and CaM-like genes contained different intron/exon patterns and they were unevenly distributed across the 12 chromosomes of S. pennellii. The results of the analysis of the conserved motifs and promoter cis-regulatory elements also indicated that these proteins were involved in the responses to biotic and abiotic stresses. qRT-PCR analysis indicated that the SpCaM and SpCML genes had broad expression patterns in abiotic stress conditions and with hormone treatments, in different tissues. The findings of this study will be important for further investigations of the calcium signal transduction mechanisms under stress conditions and lay a theoretical foundation for further exploration of the molecular mechanisms of plant resistance.
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Affiliation(s)
- Jinyan Shi
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Xiangge Du
- College of Plant Protection, China Agricultural University, Beijing, China.
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The Effect of Abiotic Stress Conditions on Expression of Calmodulin ( CaM) and Calmodulin-Like ( CML) Genes in Wild-Growing Grapevine Vitis amurensis. PLANTS 2019; 8:plants8120602. [PMID: 31847201 PMCID: PMC6963546 DOI: 10.3390/plants8120602] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/07/2019] [Accepted: 12/10/2019] [Indexed: 12/22/2022]
Abstract
Plant calmodulins (CaMs) and calmodulin-like proteins (CMLs) are important plant Ca2+-binding proteins that sense and decode changes in the intracellular Ca2+ concentration arising in response to environmental stimuli. Protein Ca2+ sensors are presented by complex gene families in plants and perform diverse biological functions. In this study, we cloned, sequenced, and characterized three CaM and 54 CML mRNA transcripts of Vitis amurensis Rupr., a wild-growing grapevine with a remarkable stress tolerance. Using real-time quantitative RT-PCR, we analyzed transcript abundance of the identified VaCaMs and VaCMLs in response to water deficit, high salinity, high mannitol, cold and heat stresses. Expression of VaCaMs and 32 VaCMLs actively responded to the abiotic stresses and exhibited both positive and negative regulation patterns. Other VaCML members showed slight transcriptional regulation, remained essentially unresponsive or responded only after one time interval of the treatments. The substantial alterations in the VaCaM and VaCML transcript levels revealed their involvement in the adaptation of wild-growing grapevine to environmental stresses.
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Hake K, Romeis T. Protein kinase-mediated signalling in priming: Immune signal initiation, propagation, and establishment of long-term pathogen resistance in plants. PLANT, CELL & ENVIRONMENT 2019; 42:904-917. [PMID: 30151921 DOI: 10.1111/pce.13429] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/13/2018] [Accepted: 08/17/2018] [Indexed: 05/03/2023]
Abstract
"Priming" in plant phytopathology describes a phenomenon where the "experience" of primary infection by microbial pathogens leads to enhanced and beneficial protection of the plant against secondary infection. The plant is able to establish an immune memory, a state of systemic acquired resistance (SAR), in which the information of "having been attacked" is integrated with the action of "being prepared to defend when it happens again." Accordingly, primed plants are often characterized by faster and stronger activation of immune reactions that ultimately result in a reduction of pathogen spread and growth. Prerequisites for SAR are (a) the initiation of immune signalling subsequent to pathogen recognition, (b) a rapid defence signal propagation from a primary infected local site to uninfected distal parts of the plant, and (c) a switch into an immune signal-dependent establishment and subsequent long-lasting maintenance of phytohormone salicylic acid-based systemic immunity. Here, we provide a summary on protein kinases that contribute to these three conceptual aspects of "priming" in plant phytopathology, complemented by data addressing the role of protein kinases crucial for immune signal initiation also for signal propagation and SAR.
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Affiliation(s)
- Katharina Hake
- Department of Plant Biochemistry, Dahlem Centre of Plant Sciences, Institute for Biology, Freie Universität Berlin, Berlin, Germany
| | - Tina Romeis
- Department of Plant Biochemistry, Dahlem Centre of Plant Sciences, Institute for Biology, Freie Universität Berlin, Berlin, Germany
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Tang W, Luo C. Overexpression of Zinc Finger Transcription Factor ZAT6 Enhances Salt Tolerance. Open Life Sci 2018; 13:431-445. [PMID: 33817112 PMCID: PMC7874681 DOI: 10.1515/biol-2018-0052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 07/23/2018] [Indexed: 12/20/2022] Open
Abstract
The purpose of the present investigation is to examine the function of the C2H2-type zinc finger transcription factor of Arabidopsis thaliana 6 (ZAT6) in salt stress tolerance in cells of rice (Oryza sativa L.), cotton (Gossypium hirsutum L.) and slash pine (Pinus elliottii Engelm.). Cells of O. sativa, G. hirsutum, and P. elliottii overexpressing ZAT6 were generated using Agrobacterium-mediated genetic transformation. Molecular and functional analysis of transgenic cell lines demonstrate that overexpression of ZAT6 increased tolerance to salt stress by decreasing lipid peroxidation and increasing the content of abscisic acid (ABA) and GA8, as well as enhancing the activities of antioxidant enzymes such as ascorbate peroxidise (APOX), catalase (CAT), glutathione reductase (GR), and superoxide dismutase (SOD). In rice cells, ZAT6 also increased expression of Ca2+-dependent protein kinase genes OsCPK9 and OsCPK25 by 5–7 fold under NaCl stress. Altogether, our results suggest that overexpression of ZAT6 enhanced salt stress tolerance by increasing antioxidant enzyme activity, hormone content and expression of Ca2+-dependent protein kinase in transgenic cell lines of different plant species.
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Affiliation(s)
- Wei Tang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei 434025, China
| | - Caroline Luo
- Department of Microbiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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Abstract
My long career in virology has been a continuous learning exercise with a very modest start. Virology and related pertinent fields have changed significantly during my lifetime. Sometimes I wish that my career had just started and I could apply all available and state of the art technology to solving problems and explaining intriguing observations. I was always convinced that visiting growers' fields is essential for researchers to get firsthand observations and knowledge of virus disease problems under field conditions. I never thought I would pursue so many avenues of research, yet it is true that research never ends. I enjoyed dissecting strain diversity in a very important plant pathogen like bean pod mottle virus (BPMV) and using BPMV-based vectors to address fundamental virology questions. Lastly, solving the enigma of the transmissible disease of Helminthosporium victoriae and attempting to gain an understanding of the molecular basis of disease in a plant pathogenic fungus were thrilling.
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Affiliation(s)
- Said A Ghabrial
- Plant Pathology Department, University of Kentucky, Lexington, Kentucky 40546, USA;
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Hu W, Yan Y, Tie W, Ding Z, Wu C, Ding X, Wang W, Xia Z, Guo J, Peng M. Genome-Wide Analyses of Calcium Sensors Reveal Their Involvement in Drought Stress Response and Storage Roots Deterioration after Harvest in Cassava. Genes (Basel) 2018; 9:genes9040221. [PMID: 29671773 PMCID: PMC5924563 DOI: 10.3390/genes9040221] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/01/2018] [Accepted: 04/12/2018] [Indexed: 12/18/2022] Open
Abstract
Calcium (Ca2+) plays a crucial role in plant development and responses to environmental stimuli. Currently, calmodulins (CaMs), calmodulin-like proteins (CMLs), and calcineurin B-like proteins (CBLs), such as Ca2+ sensors, are not well understood in cassava (Manihotesculenta Crantz), an important tropical crop. In the present study, 8 CaMs, 48 CMLs, and 9 CBLs were genome-wide identified in cassava, which were divided into two, four, and four groups, respectively, based on evolutionary relationship, protein motif, and gene structure analyses. Transcriptomic analysis revealed the expression diversity of cassava CaMs-CMLs-CBLs in distinct tissues and in response to drought stress in different genotypes. Generally, cassava CaMs-CMLs-CBLs showed different expression profiles between cultivated varieties (Arg7 and SC124) and wild ancestor (W14) after drought treatment. In addition, numerous CaMs-CMLs-CBLs were significantly upregulated at 6 h, 12 h, and 48 h after harvest, suggesting their possible role during storage roots (SR) deterioration. Further interaction network and co-expression analyses suggested that a CBL-mediated interaction network was widely involved in SR deterioration. Taken together, this study provides new insights into CaMs-CMLs-CBLs-mediated drought adaption and SR deterioration at the transcription level in cassava, and identifies some candidates for the genetic improvement of cassava.
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Affiliation(s)
- Wei Hu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road 4, Haikou 571101, Hainan, China.
| | - Yan Yan
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road 4, Haikou 571101, Hainan, China.
| | - Weiwei Tie
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road 4, Haikou 571101, Hainan, China.
| | - Zehong Ding
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road 4, Haikou 571101, Hainan, China.
| | - Chunlai Wu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road 4, Haikou 571101, Hainan, China.
| | - Xupo Ding
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road 4, Haikou 571101, Hainan, China.
| | - Wenquan Wang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road 4, Haikou 571101, Hainan, China.
| | - Zhiqiang Xia
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road 4, Haikou 571101, Hainan, China.
| | - Jianchun Guo
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road 4, Haikou 571101, Hainan, China.
| | - Ming Peng
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Xueyuan Road 4, Haikou 571101, Hainan, China.
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36
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Aldon D, Mbengue M, Mazars C, Galaud JP. Calcium Signalling in Plant Biotic Interactions. Int J Mol Sci 2018; 19:E665. [PMID: 29495448 PMCID: PMC5877526 DOI: 10.3390/ijms19030665] [Citation(s) in RCA: 152] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 02/21/2018] [Accepted: 02/22/2018] [Indexed: 12/31/2022] Open
Abstract
Calcium (Ca2+) is a universal second messenger involved in various cellular processes, leading to plant development and to biotic and abiotic stress responses. Intracellular variation in free Ca2+ concentration is among the earliest events following the plant perception of environmental change. These Ca2+ variations differ in their spatio-temporal properties according to the nature, strength and duration of the stimulus. However, their conversion into biological responses requires Ca2+ sensors for decoding and relaying. The occurrence in plants of calmodulin (CaM) but also of other sets of plant-specific Ca2+ sensors such as calmodulin-like proteins (CMLs), Ca2+-dependent protein kinases (CDPKs) and calcineurin B-like proteins (CBLs) indicate that plants possess specific tools and machineries to convert Ca2+ signals into appropriate responses. Here, we focus on recent progress made in monitoring the generation of Ca2+ signals at the whole plant or cell level and their long distance propagation during biotic interactions. The contribution of CaM/CMLs and CDPKs in plant immune responses mounted against bacteria, fungi, viruses and insects are also presented.
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Affiliation(s)
- Didier Aldon
- Laboratoire de Recherche en Sciences Vegetales, Universite de Toulouse, CNRS, UPS, 24, Chemin de Borde-Rouge, Auzeville, BP 42617, 31326 Castanet-Tolosan, France.
| | - Malick Mbengue
- Laboratoire de Recherche en Sciences Vegetales, Universite de Toulouse, CNRS, UPS, 24, Chemin de Borde-Rouge, Auzeville, BP 42617, 31326 Castanet-Tolosan, France.
| | - Christian Mazars
- Laboratoire de Recherche en Sciences Vegetales, Universite de Toulouse, CNRS, UPS, 24, Chemin de Borde-Rouge, Auzeville, BP 42617, 31326 Castanet-Tolosan, France.
| | - Jean-Philippe Galaud
- Laboratoire de Recherche en Sciences Vegetales, Universite de Toulouse, CNRS, UPS, 24, Chemin de Borde-Rouge, Auzeville, BP 42617, 31326 Castanet-Tolosan, France.
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Zeng H, Zhang Y, Zhang X, Pi E, Zhu Y. Analysis of EF-Hand Proteins in Soybean Genome Suggests Their Potential Roles in Environmental and Nutritional Stress Signaling. FRONTIERS IN PLANT SCIENCE 2017; 8:877. [PMID: 28596783 PMCID: PMC5443154 DOI: 10.3389/fpls.2017.00877] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 05/10/2017] [Indexed: 05/23/2023]
Abstract
Calcium ion (Ca2+) is a universal second messenger that plays a critical role in plant responses to diverse physiological and environmental stimuli. The stimulus-specific signals are perceived and decoded by a series of Ca2+ binding proteins serving as Ca2+ sensors. The majority of Ca2+ sensors possess the EF-hand motif, a helix-loop-helix structure which forms a turn-loop structure. Although EF-hand proteins in model plant such as Arabidopsis have been well described, the identification, classification, and the physiological functions of EF-hand-containing proteins from soybean are not systemically reported. In this study, a total of at least 262 genes possibly encoding proteins containing one to six EF-hand motifs were identified in soybean genome. These genes include 6 calmodulins (CaMs), 144 calmodulin-like proteins (CMLs), 15 calcineurin B-like proteins, 50 calcium-dependent protein kinases (CDPKs), 13 CDPK-related protein kinases, 2 Ca2+- and CaM-dependent protein kinases, 17 respiratory burst oxidase homologs, and 15 unclassified EF-hand proteins. Most of these genes (87.8%) contain at least one kind of hormonal signaling- and/or stress response-related cis-elements in their -1500 bp promoter regions. Expression analyses by exploring the published microarray and Illumina transcriptome sequencing data revealed that the expression of these EF-hand genes were widely detected in different organs of soybean, and nearly half of the total EF-hand genes were responsive to various environmental or nutritional stresses. Quantitative RT-PCR was used to confirm their responsiveness to several stress treatments. To confirm the Ca2+-binding ability of these EF-hand proteins, four CMLs (CML1, CML13, CML39, and CML95) were randomly selected for SDS-PAGE mobility-shift assay in the presence and absence of Ca2+. Results showed that all of them have the ability to bind Ca2+. This study provided the first comprehensive analyses of genes encoding for EF-hand proteins in soybean. Information on the classification, phylogenetic relationships and expression profiles of soybean EF-hand genes in different tissues and under various environmental and nutritional stresses will be helpful for identifying candidates with potential roles in Ca2+ signal-mediated physiological processes including growth and development, plant-microbe interactions and responses to biotic and abiotic stresses.
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Affiliation(s)
- Houqing Zeng
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Yaxian Zhang
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Xiajun Zhang
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Erxu Pi
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Yiyong Zhu
- College of Resources and Environmental Sciences, Nanjing Agricultural UniversityNanjing, China
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Zhu X, Robe E, Jomat L, Aldon D, Mazars C, Galaud JP. CML8, an Arabidopsis Calmodulin-Like Protein, Plays a Role in Pseudomonas syringae Plant Immunity. PLANT & CELL PHYSIOLOGY 2017; 58:307-319. [PMID: 27837097 DOI: 10.1093/pcp/pcw189] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 11/01/2016] [Indexed: 05/05/2023]
Abstract
Calcium is a universal second messenger involved in various cellular processes including plant development and stress responses. Its conversion into biological responses requires the presence of calcium sensor relays such as calmodulin (CaM) and calmodulin-like (CML) proteins. While the role of CaM is well described, the functions CML proteins remain largely uncharacterized. Here, we show that Arabidopsis CML8 expression is strongly and transiently induced by Pseudomonas syringae, and reverse genetic approaches indicated that the overexpression of CML8 confers on plants a better resistance to pathogenic bacteria compared with wild-type, knock-down and knock-out lines, indicating that CML8 participates as a positive regulator in plant immunity. However, this difference disappeared when inoculations were performed using bacteria unable to inject effectors into a plant host cell or deficient for some effectors known to target the salicylic acid (SA) signaling pathway. SA content and PR1 protein accumulation were altered in CML8 transgenic lines, supporting a role for CML8 in SA-dependent processes. Pathogen-associated molecular pattern (PAMP) treatments with flagellin and elf18 peptides have no effects on CML8 gene expression and do not modify root growth of CML8 knock-down and overexpressing lines compared with wild-type plants. Collectively, our results support a role for CML8 in plant immunity against P. syringae.
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Affiliation(s)
- Xiaoyang Zhu
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, 24, chemin de Borde-Rouge, Auzeville, BP, Castanet-Tolosan, France
| | - Eugénie Robe
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, 24, chemin de Borde-Rouge, Auzeville, BP, Castanet-Tolosan, France
| | - Lucile Jomat
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, 24, chemin de Borde-Rouge, Auzeville, BP, Castanet-Tolosan, France
- Institut Jacques Monod, UMR 7592, CNRS-Université Paris Diderot, 15 rue Hélène Brion, Paris Cédex, France
| | - Didier Aldon
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, 24, chemin de Borde-Rouge, Auzeville, BP, Castanet-Tolosan, France
| | - Christian Mazars
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, 24, chemin de Borde-Rouge, Auzeville, BP, Castanet-Tolosan, France
| | - Jean-Philippe Galaud
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, 24, chemin de Borde-Rouge, Auzeville, BP, Castanet-Tolosan, France
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Zhang K, Yue D, Wei W, Hu Y, Feng J, Zou Z. Characterization and Functional Analysis of Calmodulin and Calmodulin-Like Genes in Fragaria vesca. FRONTIERS IN PLANT SCIENCE 2016; 7:1820. [PMID: 27990153 PMCID: PMC5130985 DOI: 10.3389/fpls.2016.01820] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 11/18/2016] [Indexed: 05/14/2023]
Abstract
Calcium is a universal messenger that is involved in the modulation of diverse developmental and adaptive processes in response to various stimuli. Calmodulin (CaM) and calmodulin-like (CML) proteins are major calcium sensors in all eukaryotes, and they have been extensively investigated for many years in plants and animals. However, little is known about CaMs and CMLs in woodland strawberry (Fragaria vesca). In this study, we performed a genome-wide analysis of the strawberry genome and identified 4 CaM and 36 CML genes. Bioinformatics analyses, including gene structure, phylogenetic tree, synteny and three-dimensional model assessments, revealed the conservation and divergence of FvCaMs and FvCMLs, thus providing insight regarding their functions. In addition, the transcript abundance of four FvCaM genes and the four most related FvCML genes were examined in different tissues and in response to multiple stress and hormone treatments. Moreover, we investigated the subcellular localization of several FvCaMs and FvCMLs, revealing their potential interactions based on the localizations and potential functions. Furthermore, overexpression of five FvCaM and FvCML genes could not induce a hypersensitive response, but four of the five genes could increase resistance to Agrobacterium tumefaciens in Nicotiana benthamiana leaves. This study provides evidence for the biological roles of FvCaM and CML genes, and the results lay the foundation for future functional studies of these genes.
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Affiliation(s)
- Kai Zhang
- Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of AgricultureYangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F UniversityYangling, China
| | - Dingyi Yue
- Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of AgricultureYangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F UniversityYangling, China
| | - Wei Wei
- Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of AgricultureYangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F UniversityYangling, China
| | - Yang Hu
- Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of AgricultureYangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F UniversityYangling, China
| | - Jiayue Feng
- Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of AgricultureYangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F UniversityYangling, China
| | - Zhirong Zou
- Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of AgricultureYangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F UniversityYangling, China
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Zhou S, Jia L, Chu H, Wu D, Peng X, Liu X, Zhang J, Zhao J, Chen K, Zhao L. Arabidopsis CaM1 and CaM4 Promote Nitric Oxide Production and Salt Resistance by Inhibiting S-Nitrosoglutathione Reductase via Direct Binding. PLoS Genet 2016; 12:e1006255. [PMID: 27684709 PMCID: PMC5042403 DOI: 10.1371/journal.pgen.1006255] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 07/23/2016] [Indexed: 12/19/2022] Open
Abstract
Salt is a major threat to plant growth and crop productivity. Calmodulin (CaM), the most important multifunctional Ca2+ sensor protein in plants, mediates reactions against environmental stresses through target proteins; however, direct proof of the participation of CaM in salt tolerance and its corresponding signaling pathway in vivo is lacking. In this study, we found that AtCaM1 and AtCaM4 produced salt-responsive CaM isoforms according to real-time reverse transcription-polymerase chain reaction analyses; this result was verified based on a phenotypic analysis of salt-treated loss-of-function mutant and transgenic plants. We also found that the level of nitric oxide (NO), an important salt-responsive signaling molecule, varied in response to salt treatment depending on AtCaM1 and AtCaM4 expression. GSNOR is considered as an important and widely utilized regulatory component of NO homeostasis in plant resistance protein signaling networks. In vivo and in vitro protein-protein interaction assays revealed direct binding between AtCaM4 and S-nitrosoglutathione reductase (GSNOR), leading to reduced GSNOR activity and an increased NO level. Overexpression of GSNOR intensified the salt sensitivity of cam4 mutant plants accompanied by a reduced internal NO level, whereas a gsnor deficiency increased the salt tolerance of cam4 plants accompanied by an increased internal NO level. Physiological experiments showed that CaM4-GSNOR, acting through NO, reestablished the ion balance to increase plant resistance to salt stress. Together, these data suggest that AtCaM1 and AtCaM4 serve as signals in plant salt resistance by promoting NO accumulation through the binding and inhibition of GSNOR. This could be a conserved defensive signaling pathway in plants and animals.
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Affiliation(s)
- Shuo Zhou
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, China
| | - Lixiu Jia
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, China
| | - Hongye Chu
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, China
| | - Dan Wu
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, China
| | - Xuan Peng
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, China
| | - Xu Liu
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, China
| | - Jiaojiao Zhang
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, China
| | - Junfeng Zhao
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, China
| | - Kunming Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A & F University, Yangling, China
| | - Liqun Zhao
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, China
- * E-mail:
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Huang J, Guo N, Li Y, Sun J, Hu G, Zhang H, Li Y, Zhang X, Zhao J, Xing H, Qiu L. Phenotypic evaluation and genetic dissection of resistance to Phytophthora sojae in the Chinese soybean mini core collection. BMC Genet 2016; 17:85. [PMID: 27316671 PMCID: PMC4912746 DOI: 10.1186/s12863-016-0383-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 05/25/2016] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Phytophthora root and stem rot (PRR) caused by Phytophthora sojae is one of the most serious diseases affecting soybean (Glycine max (L.) Merr.) production all over the world. The most economical and environmentally-friendly way to control the disease is the exploration and utilization of resistant varieties. RESULTS We screened a soybean mini core collection composed of 224 germplasm accessions for resistance against eleven P. sojae isolates. Soybean accessions from the Southern and Huanghuai regions, especially the Hubei, Jiangsu, Sichuan and Fujian provinces, had the most varied and broadest spectrum of resistance. Based on gene postulation, Rps1b, Rps1c, Rps4, Rps7 and novel resistance genes were identified in resistant accessions. Consequently, association mapping of resistance to each isolate was performed with 1,645 single nucleotide polymorphism (SNP) markers. A total of 14 marker-trait associations for Phytophthora resistance were identified. Among them, four were located in known PRR resistance loci intervals, five were located in other disease resistance quantitative trait locus (QTL) regions, and five associations unmasked novel loci for PRR resistance. In addition, we also identified candidate genes related to resistance. CONCLUSION This is the first P. sojae resistance evaluation conducted using the Chinese soybean mini core collection, which is a representative sample of Chinese soybean cultivars. The resistance reaction analyses provided an excellent database of resistant resources and genetic variations for future breeding programs. The SNP markers associated with resistance will facilitate marker-assisted selection (MAS) in breeding programs for resistance to PRR, and the candidate genes may be useful for exploring the mechanism underlying P. sojae resistance.
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Affiliation(s)
- Jing Huang
- National Center for Soybean Improvement/National Key laboratory of Crop Genetics and Germplasm enhancement, Key laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Na Guo
- National Center for Soybean Improvement/National Key laboratory of Crop Genetics and Germplasm enhancement, Key laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Yinghui Li
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Lab of Germplasm Utilization (MOA), Institute of Crop Science, Chinese Academy of Agricultural Sciences, 100081, Beijing, People's Republic of China
| | - Jutao Sun
- National Center for Soybean Improvement/National Key laboratory of Crop Genetics and Germplasm enhancement, Key laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Guanjun Hu
- National Center for Soybean Improvement/National Key laboratory of Crop Genetics and Germplasm enhancement, Key laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Haipeng Zhang
- National Center for Soybean Improvement/National Key laboratory of Crop Genetics and Germplasm enhancement, Key laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Yanfei Li
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Lab of Germplasm Utilization (MOA), Institute of Crop Science, Chinese Academy of Agricultural Sciences, 100081, Beijing, People's Republic of China
| | - Xing Zhang
- National Center for Soybean Improvement/National Key laboratory of Crop Genetics and Germplasm enhancement, Key laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Jinming Zhao
- National Center for Soybean Improvement/National Key laboratory of Crop Genetics and Germplasm enhancement, Key laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Han Xing
- National Center for Soybean Improvement/National Key laboratory of Crop Genetics and Germplasm enhancement, Key laboratory of Biology and Genetics and Breeding for Soybean, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
| | - Lijuan Qiu
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Lab of Germplasm Utilization (MOA), Institute of Crop Science, Chinese Academy of Agricultural Sciences, 100081, Beijing, People's Republic of China.
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Whitham SA, Lincoln LM, Chowda-Reddy RV, Dittman JD, O'Rourke JA, Graham MA. Virus-Induced Gene Silencing and Transient Gene Expression in Soybean (Glycine max) Using Bean Pod Mottle Virus Infectious Clones. ACTA ACUST UNITED AC 2016; 1:263-283. [PMID: 30775861 DOI: 10.1002/cppb.20012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Virus-induced gene silencing (VIGS) is a powerful and rapid approach for determining the functions of plant genes. The basis of VIGS is that a viral genome is engineered so that it can carry fragments of plant genes, typically in the 200 to 300 base pair size range. The recombinant viruses are used to infect experimental plants, and wherever the virus invades, the target gene or genes will be silenced. VIGS is thus transient, and in the span of a few weeks, it is possible to design VIGS constructs and then generate loss-of-function phenotypes through RNA silencing of the target genes. In soybean (Glycine max), the Bean pod mottle virus (BPMV) has been engineered to be valuable tool for silencing genes with diverse functions and also for over-expression of foreign genes. This protocol describes a method for designing BPMV constructs and using them to silence or transiently express genes in soybean. © 2016 by John Wiley & Sons, Inc.
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Affiliation(s)
- Steven A Whitham
- Department of Plant Pathology and Microbiology, Iowa State University, Ames, Iowa.,These authors contributed equally to this work
| | - Lori M Lincoln
- Agricultural Research Service, Corn Insects and Crop Genetics Research Unit, United States Department of Agriculture, Ames, Iowa
| | | | - Jaime D Dittman
- Department of Plant Pathology and Microbiology, Iowa State University, Ames, Iowa
| | - Jamie A O'Rourke
- Agricultural Research Service, Corn Insects and Crop Genetics Research Unit, United States Department of Agriculture, Ames, Iowa
| | - Michelle A Graham
- Agricultural Research Service, Corn Insects and Crop Genetics Research Unit, United States Department of Agriculture, Ames, Iowa.,These authors contributed equally to this work
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43
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Fercha A, Capriotti AL, Caruso G, Cavaliere C, Stampachiacchiere S, Zenezini Chiozzi R, Laganà A. Shotgun proteomic analysis of soybean embryonic axes during germination under salt stress. Proteomics 2016; 16:1537-46. [PMID: 26969838 DOI: 10.1002/pmic.201500283] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 01/19/2016] [Accepted: 03/08/2016] [Indexed: 12/21/2022]
Abstract
Seed imbibition and radicle emergence are generally less affected by salinity in soybean than in other crop plants. In order to unveil the mechanisms underlying this remarkable salt tolerance of soybean at seed germination, a comparative label-free shotgun proteomic analysis of embryonic axes exposed to salinity during germination sensu stricto (GSS) was conducted. The results revealed that the application of 100 and 200 mmol/L NaCl stress was accompanied by significant changes (>2-fold, P<0.05) of 97 and 75 proteins, respectively. Most of these salt-responsive proteins (70%) were classified into three major functional categories: disease/defense response, protein destination and storage and primary metabolism. The involvement of these proteins in salt tolerance of soybean was discussed, and some of them were suggested to be potential salt-tolerant proteins. Furthermore, our results suggest that the cross-protection against aldehydes, oxidative as well as osmotic stress, is the major adaptive response to salinity in soybean.
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Affiliation(s)
- Azzedine Fercha
- Department of Biology, University of Abbès Laghrour Khenchela, Khenchela, Algeria
| | | | - Giuseppe Caruso
- Department of Chemistry, Sapienza Università di Roma, Rome, Italy
| | - Chiara Cavaliere
- Department of Chemistry, Sapienza Università di Roma, Rome, Italy
| | | | | | - Aldo Laganà
- Department of Chemistry, Sapienza Università di Roma, Rome, Italy
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44
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Zhang J, Liu S, Zhang L, Nian H, Chen L. Effect of aluminum stress on the expression of calmodulin and the role of calmodulin in aluminum tolerance. J Biosci Bioeng 2016; 122:558-562. [PMID: 27133707 DOI: 10.1016/j.jbiosc.2016.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 04/05/2016] [Accepted: 04/06/2016] [Indexed: 11/17/2022]
Abstract
Calmodulin (CaM) is a calcium ion-binding protein that regulates a variety of cellular functions through its downstream target proteins. Previous studies have reported that overexpression of CaM enhances tolerance to stress, including resistance to salt, heat, cold, drought and plant pathogens. In this study, the growth of Cryptococcus humicola was inhibited by the CaM inhibitor, trifluoperazine, under aluminum (Al) stress. The expression of CaM of C. humicola (ChCaM) was upregulated when the concentration and treatment time with Al was increased. These results indicate that Al stress affects the transcription and translation of ChCaM and that ChCaM may play an important role in Al tolerance. Transgenic ChCaM Saccharomyces cerevisiae was constructed and designated as Sc-ChCaM. The ability of Sc-ChCaM to develop resistance to Al was significantly higher than that of control yeast containing the empty vector pYES3/CT designated as Sc. The residual Al content in the medium containing ChCaM transgenic yeast in culture was significantly lower than the initial amount of Al added in the medium or the residual Al content in the medium containing the control yeast in culture. This finding suggests that ChCaM confers Al tolerance in transgenic yeast, and the absorption of active Al from the culture may be one reason for Al tolerance. These results indicate that ChCaM may be a candidate gene for Al tolerance in engineered plants.
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Affiliation(s)
- Jingjing Zhang
- Biotechnology Research Center, Kunming University of Science and Technology, Kunming 650500, China
| | - Shuai Liu
- Biotechnology Research Center, Kunming University of Science and Technology, Kunming 650500, China
| | - Lei Zhang
- Biotechnology Research Center, Kunming University of Science and Technology, Kunming 650500, China
| | - Hongjuan Nian
- Biotechnology Research Center, Kunming University of Science and Technology, Kunming 650500, China.
| | - Limei Chen
- Biotechnology Research Center, Kunming University of Science and Technology, Kunming 650500, China
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Sun Z, Wang Y, Mou F, Tian Y, Chen L, Zhang S, Jiang Q, Li X. Genome-Wide Small RNA Analysis of Soybean Reveals Auxin-Responsive microRNAs that are Differentially Expressed in Response to Salt Stress in Root Apex. FRONTIERS IN PLANT SCIENCE 2016; 6:1273. [PMID: 26834773 PMCID: PMC4716665 DOI: 10.3389/fpls.2015.01273] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 12/28/2015] [Indexed: 05/04/2023]
Abstract
Root growth and the architecture of the root system in Arabidopsis are largely determined by root meristematic activity. Legume roots show strong developmental plasticity in response to both abiotic and biotic stimuli, including symbiotic rhizobia. However, a global analysis of gene regulation in the root meristem of soybean plants is lacking. In this study, we performed a global analysis of the small RNA transcriptome of root tips from soybean seedlings grown under normal and salt stress conditions. In total, 71 miRNA candidates, including known and novel variants of 59 miRNA families, were identified. We found 66 salt-responsive miRNAs in the soybean root meristem; among them, 22 are novel miRNAs. Interestingly, we found auxin-responsive cis-elements in the promoters of many salt-responsive miRNAs, implying that these miRNAs may be regulated by auxin and auxin signaling plays a key role in regulating the plasticity of the miRNAome and root development in soybean. A functional analysis of miR399, a salt-responsive miRNA in the root meristem, indicates the crucial role of this miRNA in modulating soybean root developmental plasticity. Our data provide novel insight into the miRNAome-mediated regulatory mechanism in soybean root growth under salt stress.
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Affiliation(s)
- Zhengxi Sun
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
- University of Chinese Academy of SciencesBeijing, China
| | - Youning Wang
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Fupeng Mou
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
| | - Yinping Tian
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
| | - Liang Chen
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
| | - Senlei Zhang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
| | - Qiong Jiang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of SciencesShijiazhuang, China
| | - Xia Li
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
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Zhu X, Dunand C, Snedden W, Galaud JP. CaM and CML emergence in the green lineage. TRENDS IN PLANT SCIENCE 2015; 20:483-9. [PMID: 26115779 DOI: 10.1016/j.tplants.2015.05.010] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 05/21/2015] [Accepted: 05/23/2015] [Indexed: 05/02/2023]
Abstract
Calmodulin (CaM) is a well-studied calcium sensor that is ubiquitous in all eukaryotes and contributes to signaling during developmental processes and adaptation to environmental stimuli. Among eukaryotes, plants have a remarkable variety of CaM-like proteins (CMLs). The expansion of genomic data sets offers the opportunity to explore CaM and CML evolution among the green lineage from algae to land plants. Database analysis indicates that a striking diversity of CaM and CMLs evolved in angiosperms during terrestrial colonization and reveals the emergence of new CML classes throughout the green lineage that correlate with the acquisition of novel biological traits. Here, we speculate that expansion of the CML family was driven by selective pressures to process environmental signals efficiently as plants adapted to land environments.
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Affiliation(s)
- Xiaoyang Zhu
- Université de Toulouse, UPS, UMR 5546, Laboratoire de Recherche en Sciences Végétales, BP 42617, F-31326, Castanet-Tolosan, France; CNRS, UMR 5546, BP 42617, F-31326, Castanet-Tolosan, France
| | - Christophe Dunand
- Université de Toulouse, UPS, UMR 5546, Laboratoire de Recherche en Sciences Végétales, BP 42617, F-31326, Castanet-Tolosan, France; CNRS, UMR 5546, BP 42617, F-31326, Castanet-Tolosan, France
| | - Wayne Snedden
- Department of Biology, Queen's University, Kingston, ONT K7L 3N6, Canada
| | - Jean-Philippe Galaud
- Université de Toulouse, UPS, UMR 5546, Laboratoire de Recherche en Sciences Végétales, BP 42617, F-31326, Castanet-Tolosan, France; CNRS, UMR 5546, BP 42617, F-31326, Castanet-Tolosan, France.
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Yin Y, Yang R, Han Y, Gu Z. Comparative proteomic and physiological analyses reveal the protective effect of exogenous calcium on the germinating soybean response to salt stress. J Proteomics 2015; 113:110-26. [PMID: 25284050 DOI: 10.1016/j.jprot.2014.09.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 09/22/2014] [Accepted: 09/26/2014] [Indexed: 01/16/2023]
Abstract
Calcium enhances salt stress tolerance of soybeans. Nevertheless, the molecular mechanism of calcium's involvement in resistance to salt stress is unclear. A comparative proteomic approach was used to investigate protein profiles in germinating soybeans under NaCl-CaCl2 and NaCl-LaCl3 treatments. A total of 80 proteins affected by calcium in 4-day-old germinating soybean cotyledons and 71 in embryos were confidently identified. The clustering analysis showed proteins were subdivided into 5 and 6 clusters in cotyledon and embryo, respectively. Among them, proteins involved in signal transduction and energy pathways, in transportation, and in protein biosynthesis were largely enriched while those involved in proteolysis were decreased. Abundance of nucleoside diphosphate kinase and three antioxidant enzymes were visibly increased by calcium. Accumulation of gamma-aminobutyric acid and polyamines was also detected after application of exogenous calcium. This was consistent with proteomic results, which showed that proteins involved in the glutamate and methionine metabolism were mediated by calcium. Calcium could increase the salt stress tolerance of germinating soybeans via enriching signal transduction, energy pathway and transportation, promoting protein biosynthesis, inhibiting proteolysis, redistributing storage proteins, regulating protein processing in endoplasmic reticulum, enriching antioxidant enzymes and activating their activities, accumulating secondary metabolites and osmolytes, and other adaptive responses. Biological significance Soybean (Glycine max L.), as a traditional edible legume, is being targeted for designing functional foods. During soybean germination under stressful conditions especially salt stress, newly discovered functional components such as gamma-aminobutyric acid (GABA) are rapidly accumulated. However, soybean plants are relatively salt-sensitive and the growth, development and biomass of germinating soybeans are significantly suppressed under salt stress condition. According to previous studies, exogenous calcium counters the harmful effect of salt stress and increases the biomass and GABA content of germinating soybeans. Nevertheless, the precise molecular mechanism underlying the role of calcium in resistance to salt stress is still unknown. This paper is the first study employing comparative proteomic and physiological analyses to reveal the protective effect of exogenous calcium in the germinating soybean response to salt stress. Our study links the biological events with proteomic information and provides detailed peptide information on all identified proteins. The functions of those significantly changed proteins are also analyzed. The physiological and comparative proteomic analyses revealed the putative molecular mechanism of exogenous calcium treatment induced salt stress responses. The findings from this paper are beneficial to high GABA-rich germinating soybean biomass. Additionally, these findings also might be applicable to the genetic engineering of soybean plants to improve stress tolerance.
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Affiliation(s)
- Yongqi Yin
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China; College of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu 225127, PR China
| | - Runqiang Yang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China
| | - Yongbin Han
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China
| | - Zhenxin Gu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China.
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