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Zhang Y, Yu S, Niu P, Su L, Jiao X, Sui X, Shi Y, Liu B, Lu W, Zhu H, Jiang X. RcMYB8 enhances salt and drought tolerance in rose (Rosa chinensis) by modulating RcPR5/1 and RcP5CS1. MOLECULAR HORTICULTURE 2024; 4:3. [PMID: 38282004 PMCID: PMC10823735 DOI: 10.1186/s43897-024-00080-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 01/01/2024] [Indexed: 01/30/2024]
Abstract
Plant Myeloblastosis (MYB) proteins function crucially roles upon variegated abiotic stresses. Nonetheless, their effects and mechanisms in rose (Rosa chinensis) are not fully clarified. In this study, we characterized the effects of rose RcMYB8 under salt and drought tolerances. For induction of the RcMYB8 expression, NaCl and drought stress treatment were adopted. Rose plants overexpressing RcMYB8 displayed enhanced tolerance to salinity and drought stress, while silencing RcMYB8 resulted in decreased tolerance, as evidenced by lowered intra-leaf electrolyte leakage and callose deposition, as well as photosynthetic sustainment under stressed conditions. Here, we further show that RcMYB8 binds similarly to the promoters of RcPR5/1 and RcP5C51 in vivo and in vitro. Inhibiting RcP5CS1 by virus-induced gene silencing led to decreased drought tolerance through the reactive oxygen species (ROS) homeostatic regulation. RcP5CS1-silenced plants showed an increase in ion leakage and reduce of proline content, together with the content of malondialdehyde (MDA) increased, lowered activities of Catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD). Our study highlights the transcriptional modulator role of RcMYB8 in drought and salinity tolerances, which bridges RcPR5/1 and RcP5CS1 by promoting ROS scavenging. Besides, it is probably applicable to the rose plant engineering for enhancing their abiotic stress tolerances.
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Affiliation(s)
- Yichang Zhang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Shuang Yu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Pengfei Niu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Lin Su
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Xuecheng Jiao
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Xiuyu Sui
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Yaru Shi
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Boda Liu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Wanpei Lu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Hong Zhu
- College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, Shandong, China.
| | - Xinqiang Jiang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China.
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Tang Q, Wei S, Zheng X, Tu P, Tao F. APETALA2/ethylene-responsive factors in higher plant and their roles in regulation of plant stress response. Crit Rev Biotechnol 2024:1-19. [PMID: 38267262 DOI: 10.1080/07388551.2023.2299769] [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: 08/18/2023] [Accepted: 11/30/2023] [Indexed: 01/26/2024]
Abstract
Plants, anchored throughout their life cycles, face a unique set of challenges from fluctuating environments and pathogenic assaults. Central to their adaptative mechanisms are transcription factors (TFs), particularly the AP2/ERF superfamily-one of the most extensive TF families unique to plants. This family plays instrumental roles in orchestrating diverse biological processes ranging from growth and development to secondary metabolism, and notably, responses to both biotic and abiotic stresses. Distinguished by the presence of the signature AP2 domain or its responsiveness to ethylene signals, the AP2/ERF superfamily has become a nexus of research focus, with increasing literature elucidating its multifaceted roles. This review provides a synoptic overview of the latest research advancements on the AP2/ERF family, spanning its taxonomy, structural nuances, prevalence in higher plants, transcriptional and post-transcriptional dynamics, and the intricate interplay in DNA-binding and target gene regulation. Special attention is accorded to the ethylene response factor B3 subgroup protein Pti5 and its role in stress response, with speculative insights into its functionalities and interaction matrix in tomatoes. The overarching goal is to pave the way for harnessing these TFs in the realms of plant genetic enhancement and novel germplasm development.
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Affiliation(s)
- Qiong Tang
- College of Standardization, China Jiliang University, Hangzhou, China
| | - Sishan Wei
- College of Standardization, China Jiliang University, Hangzhou, China
| | - Xiaodong Zheng
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, China
| | - Pengcheng Tu
- Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Fei Tao
- College of Standardization, China Jiliang University, Hangzhou, China
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3
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Ma Z, Hu L, Jiang W. Understanding AP2/ERF Transcription Factor Responses and Tolerance to Various Abiotic Stresses in Plants: A Comprehensive Review. Int J Mol Sci 2024; 25:893. [PMID: 38255967 PMCID: PMC10815832 DOI: 10.3390/ijms25020893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/04/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Abiotic stress is an adverse environmental factor that severely affects plant growth and development, and plants have developed complex regulatory mechanisms to adapt to these unfavourable conditions through long-term evolution. In recent years, many transcription factor families of genes have been identified to regulate the ability of plants to respond to abiotic stresses. Among them, the AP2/ERF (APETALA2/ethylene responsive factor) family is a large class of plant-specific proteins that regulate plant response to abiotic stresses and can also play a role in regulating plant growth and development. This paper reviews the structural features and classification of AP2/ERF transcription factors that are involved in transcriptional regulation, reciprocal proteins, downstream genes, and hormone-dependent signalling and hormone-independent signalling pathways in response to abiotic stress. The AP2/ERF transcription factors can synergise with hormone signalling to form cross-regulatory networks in response to and tolerance of abiotic stresses. Many of the AP2/ERF transcription factors activate the expression of abiotic stress-responsive genes that are dependent or independent of abscisic acid and ethylene in response to abscisic acid and ethylene. In addition, the AP2/ERF transcription factors are involved in gibberellin, auxin, brassinosteroid, and cytokinin-mediated abiotic stress responses. The study of AP2/ERF transcription factors and interacting proteins, as well as the identification of their downstream target genes, can provide us with a more comprehensive understanding of the mechanism of plant action in response to abiotic stress, which can improve plants' ability to tolerate abiotic stress and provide a more theoretical basis for increasing plant yield under abiotic stress.
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Affiliation(s)
- Ziming Ma
- Jilin Provincial Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China;
- Max-Planck-Institute of Molecular Plant Physiology, Am Muehlenberg 1, 14476 Potsdam-Golm, Germany
- Plant Genetics, TUM School of Life Sciences, Technical University of Munich (TUM), Emil Ramann Str. 4, 85354 Freising, Germany
| | - Lanjuan Hu
- Jilin Provincial Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China;
| | - Wenzhu Jiang
- Jilin Provincial Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China;
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El-aty MSA, Abo-youssef MI, Bahgt MM. Genetic diversity Analysis using molecular markers of some rice varieties for Physiological, biochemical and yield Traits under water deficit condition.. [DOI: 10.21203/rs.3.rs-3111398/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
Rice is a major staple food crop all over the world. Recent climate change trends forecast an increase in drought severity, necessitating the creation of novel drought-tolerant rice cultivars in order to continue rice production in this ecosystem. This study was carried out at the experimental farm of the rice research and training center (RRTC) using the randomized complete block design (RCBD) to assess the impact of water scarcity on eight rice varieties by identifying differences in physiological and biochemical responses among drought-sensitive and resistant rice varieties, in addition applying two PCR-based molecular marker systems ISSR and SCoT to assess the genetic diversity among the studied rice varieties. The results revealed that, Water shortage stress significantly reduced relative water content, total chlorophyll content, grain yield, and yield characteristics. while, it significantly raised proline content and antioxidant enzyme activity (CAT, APX, and SOD). The combined analysis of variance demonstrated that the mean squares for environments, varieties, and their interaction were highly significant for all investigated traits, suggesting that the germplasm used in the study had significant genetic diversity from one environment (normal irrigation) to another (water deficit) and could rank differently in both of them. Mean performance data showed that, Puebla and Hispagran varieties were selected as the most favourable varieties for most physiological and biochemical parameters studied, as well as yield traits which recorded the highest desirable values under both irrigation treatments. They were recommended for use in rice hybrid breeding programmes for water scarcity tolerance. Genetic Similarity and Cluster Analysis revealed that, the both molecular markers exhibited comparable genetic diversity values but a higher level of polymorphism was represented by ISSR. This indicates the high efficiency of both markers in discriminating the tested varieties. The dendrogram generated by ISSR and SCoT markers combined data divided the varieties into two major clusters. Cluster I consisted of the genotype Sakha 106. Cluster II retained seven varieties, which were further divided into two sub-clusters; Sakha 101, Sakha 105, Sakha 106, Sakha 107 constituted the first subgroup, while Giza 177, Hispagran, and Puebla formed the second one.
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Xiong R, Chu Z, Peng X, Cui G, Li W, Dong L. Transcript-wide identification and expression pattern analysis to comprehend the roles of AP2/ERF genes under development and abiotic stress in Trichosanthes kirilowii. BMC PLANT BIOLOGY 2023; 23:354. [PMID: 37430217 DOI: 10.1186/s12870-023-04362-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 06/23/2023] [Indexed: 07/12/2023]
Abstract
BACKGROUND The APETALA 2/ ethylene-responsive element binding factors (AP2/ERF), are thought to be associated with plant abiotic stress response, and involved in some plant hormone signaling pathways. Trichosanthes kirilowii is an important edible and medicinal crop, so far no research has been conducted on the TkAP2/ERF genes. RESULT In this study, a total of 135 TkERFs were identified, these genes were divided into 4 subfamilies and clustered into 13 groups. Moreover, 37 paralogous pairs were identified, with only two having Ka/Ks values greater than 1, proving that most TkERF genes underwent purifying selection during evolution. Co-expression networks constructed using transcriptome data at various flowering stages revealed that 50, 64, and 67 AP2/ERF genes correlated with members of the ethylene, gibberellin, and abscisic acid signaling pathways, respectively. When tissue cultured seedlings were treated with ETH, GA3 and ABA, 11, 12 and 17 genes were found to be up-regulated, respectively, suggesting that some members of the TkERF gene family may be involved in plant hormone signaling pathways. And under 4 ℃, PEG and NaCl treatment, 15, 20 and 19 genes were up-regulated, respectively, this suggested that these selected genes might be involved in plant abiotic stresses. CONCLUSIONS Overall, we identified 135 AP2/ERF family members, a comprehensive analysis of AP2/ERF gene expression patterns by RNA-seq and qRT-PCR showed that they played important roles in flower development and abiotic stress. This study provided a theoretical basis for the functional study of TkAP2/ERF genes and the genetic improvement of T. kirilowii.
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Affiliation(s)
- Rui Xiong
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China
- Key Laboratory of Horticultural Crop Germplasm innovation and Utilization (Co-construction by Ministry and Province), Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China
| | - Zhuannan Chu
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China
- Key Laboratory of Horticultural Crop Germplasm innovation and Utilization (Co-construction by Ministry and Province), Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China
| | - Xingxing Peng
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China
- Key Laboratory of Horticultural Crop Germplasm innovation and Utilization (Co-construction by Ministry and Province), Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China
| | - Guangsheng Cui
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China
- Key Laboratory of Horticultural Crop Germplasm innovation and Utilization (Co-construction by Ministry and Province), Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China
| | - Weiwen Li
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China.
- Key Laboratory of Horticultural Crop Germplasm innovation and Utilization (Co-construction by Ministry and Province), Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China.
| | - Ling Dong
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China.
- Key Laboratory of Horticultural Crop Germplasm innovation and Utilization (Co-construction by Ministry and Province), Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, 230001, China.
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Chai Z, Fang J, Huang C, Huang R, Tan X, Chen B, Yao W, Zhang M. A novel transcription factor, ScAIL1, modulates plant defense responses by targeting DELLA and regulating gibberellin and jasmonic acid signaling in sugarcane. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:6727-6743. [PMID: 35986920 DOI: 10.1093/jxb/erac339] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
DELLA proteins are important repressors of gibberellin signaling, regulating plant development and defense responses through crosstalk with various phytohormones. Sugarcane ScGAI encodes a DELLA protein that regulates culm development. However, it is unclear which transcription factors mediate the transcription of ScGAI. Here, we identified two different ScGAI promoter sequences that cooperatively regulate ScGAI transcription. We also identified a nuclear-localized AP2 family transcription factor, ScAIL1, which inhibits the transcription of ScGAI by directly binding to two ScGAI promoters. ScAIL1 was expressed in all sugarcane tissues tested and was induced by gibberellin and various stressors, including NaCl, polyethylene glycol, and pathogenic fungi and bacteria. Overexpression of ScAIL1 in rice significantly improved resistance to bacterial blight and rice blast, while reducing growth and development. In addition, several genes associated with stress responses were significantly up-regulated in transgenic rice overexpressing ScAIL1. Endogenous phytohormone content and expression analysis further revealed that ScAIL1-overexpressing lines improved resistance to bacterial blight and rice blast instead of promoting growth, and that this response was associated with increased jasmonic acid synthesis and gibberellin inactivation. These results provide molecular evidence that the role of ScAIL1 in the plant defense response is related to jasmonic acid and gibberellin signaling.
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Affiliation(s)
- Zhe Chai
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources & Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning 530005, China
- College of Agricultural, Guangxi University, Nanning 530005, China
| | - Jinlan Fang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources & Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning 530005, China
- College of Agricultural, Guangxi University, Nanning 530005, China
| | - Cuilin Huang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources & Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning 530005, China
| | - Run Huang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources & Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning 530005, China
| | - Xuan Tan
- College of Agricultural, Guangxi University, Nanning 530005, China
| | - Baoshan Chen
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources & Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning 530005, China
| | - Wei Yao
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources & Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning 530005, China
| | - Muqing Zhang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources & Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning 530005, China
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Molecular Events of Rice AP2/ERF Transcription Factors. Int J Mol Sci 2022; 23:ijms231912013. [PMID: 36233316 PMCID: PMC9569836 DOI: 10.3390/ijms231912013] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/21/2022] [Accepted: 10/07/2022] [Indexed: 11/24/2022] Open
Abstract
APETALA2/ethylene response factor (AP2/ERF) is widely found in the plant kingdom and plays crucial roles in transcriptional regulation and defense response of plant growth and development. Based on the research progress related to AP2/ERF genes, this paper focuses on the classification and structural features of AP2/ERF transcription factors, reviews the roles of rice AP2/ERF genes in the regulation of growth, development and stress responses, and discusses rice breeding potential and challenges. Taken together; studies of rice AP2/ERF genes may help to elucidate and enrich the multiple molecular mechanisms of how AP2/ERF genes regulate spikelet determinacy and floral organ development, flowering time, grain size and quality, embryogenesis, root development, hormone balance, nutrient use efficiency, and biotic and abiotic response processes. This will contribute to breeding excellent rice varieties with high yield and high resistance in a green, organic manner.
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Freeg HA, Attia KA, Casson S, Fiaz S, Ramadan EA, Banna AE, Zoulias N, Aboshosha A, Alamery S. Physio-biochemical responses and expressional profiling analysis of drought tolerant genes in new promising rice genotype. PLoS One 2022; 17:e0266087. [PMID: 35349595 PMCID: PMC8963560 DOI: 10.1371/journal.pone.0266087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/13/2022] [Indexed: 11/18/2022] Open
Abstract
Rice cultivation in Egypt is limited by the scarcity of water resources. The main strategy of rice breeders to overcome this problem is to develop new high-yielding varieties that are tolerant to drought stress. In this study, an drought-tolerant (IR60080-46A) variety was crossed with commercial Egyptian varieties using the back-cross method and marker-assisted selection (MAS) approach. The advanced lines of these crosses were selected under drought stress conditions. The best-performing candidate line, RBL-112, and its parental genotypes, were evaluated under drought stress and control conditions. The RBL-112 line showed superior its root system, which in turn produced higher grain yield under drought-stress conditions than its parental and check genotypes. Furthermore, physiological and biochemical studies showed that the RBL-112 line maintained higher relative water content (RWC), maximum quantum efficiency of photosystem II (Fv/Fm) values, proline content, superoxide dismutase (SOD) activity, and lower malondialdehyde (MDA) content compared to its parents and the check. The functional expression profiles of 22 drought tolerance-related genes were studied, out of which the genes OsAHL1, OsLEA3, OsCATA, OsP5CS, OsSNAC1, Os1g64660, OsRab21, OsAPX2, OsDREB2A, OsSKIPa, and OsLG3 were strongly induced in the newly developed RBL-112 line under drought-stress conditions. It could be concluded that the new line has a higher capacity to modulate physiological activities and expression levels of several drought-induced genes to withstand drought stress with high yielding ability. This finding suggests that the RBL-112 line presents a promising new addition to enable sustainable rice cultivation under water-limited conditions, and confirms the efficiency of the approach implemented in the current study.
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Affiliation(s)
- Haytham A. Freeg
- Department of Molecular Biology and Biotechnology, College of Science, Sheffield University, Sheffield, TN, United Kingdom
- Rice Biotechnology Lab., Rice Research & Training Center (RRTC), Field Crops Research Institute, ARC, Sakhah, Egypt
- Department of Genetics, College of Agriculture, Kafr-El-Sheikh University, Kafr El Sheikh, Egypt
| | - Kotb A. Attia
- Rice Biotechnology Lab., Rice Research & Training Center (RRTC), Field Crops Research Institute, ARC, Sakhah, Egypt
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
- * E-mail: (KAA); (SF)
| | - Stuart Casson
- Department of Molecular Biology and Biotechnology, College of Science, Sheffield University, Sheffield, TN, United Kingdom
| | - Sajid Fiaz
- Department of Plant Breeding and Genetics, The University of Haripur, Haripur, Pakistan
- * E-mail: (KAA); (SF)
| | - Ebrahim A. Ramadan
- Rice Biotechnology Lab., Rice Research & Training Center (RRTC), Field Crops Research Institute, ARC, Sakhah, Egypt
| | - Antar El- Banna
- Department of Genetics, College of Agriculture, Kafr-El-Sheikh University, Kafr El Sheikh, Egypt
| | - Nicholas Zoulias
- Department of Molecular Biology and Biotechnology, College of Science, Sheffield University, Sheffield, TN, United Kingdom
| | - Ali Aboshosha
- Department of Genetics, College of Agriculture, Kafr-El-Sheikh University, Kafr El Sheikh, Egypt
| | - Salman Alamery
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
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Chen Y, Dai Y, Li Y, Yang J, Jiang Y, Liu G, Yu C, Zhong F, Lian B, Zhang J. Overexpression of the Salix matsudana SmAP2-17 gene improves Arabidopsis salinity tolerance by enhancing the expression of SOS3 and ABI5. BMC PLANT BIOLOGY 2022; 22:102. [PMID: 35255820 PMCID: PMC8900321 DOI: 10.1186/s12870-022-03487-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Salix matsudana (Koidz.) is a widely planted ornamental allotetraploid tree species. Genetic engineering can be used to enhance the tolerance of this species to soil salinization, endowing varieties with the ability to grow along coastlines, thereby mitigating afforestation and protecting the environment. The AP2/ERF family of transcription factors (TFs) plays multidimensional roles in plant biotic/abiotic stress tolerance and plant development. In this study, we cloned the SmAP2-17 gene and performed functional analysis of its role in salt tolerance. This study aims to identify key genes for future breeding of stress-resistant varieties of Salix matsudana. RESULTS SmAP2-17 was predicted to be a homolog of AP2-like ethylene-responsive transcription factor ANT isoform X2 from Arabidopsis, with a predicted ORF of 2058 bp encoding an estimated protein of 685 amino acids containing two conserved AP2 domains (PF00847.20). SmAP2-17 had a constitutive expression pattern and was localized to the nucleus. The overexpression of the native SmAP2-17 CDS sequence in Arabidopsis did not increase salt tolerance because of the reduced expression level of ectopic SmAP2-17, potentially caused by salt-induced RNAi. Transgenic lines with high expression of optimized SmAP2-17 CDS under salt stress showed enhanced tolerance to salt. Moreover, the expression of general stress marker genes and important salt stress signaling genes, including RD29A, ABI5, SOS3, AtHKT1, and RBohF, were upregulated in SmAP2-17-overexpressed lines, with expression levels consistent with that of SmAP2-17 or optimized SmAP2-17. Promoter activity analysis using dual luciferase analysis showed that SmAP2-17 could bind the promoters of SOS3 and ABI5 to activate their expression, which plays a key role in regulating salt tolerance. CONCLUSIONS The SmAP2-17 gene isolated from Salix matsudana (Koidz.) is a positive regulator that improves the resistance of transgenic plants to salt stress by upregulating SOS3 and ABI5 genes. This study provides a potential functional gene resource for future generation of salt-resistant Salix lines by genetic engineering.
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Affiliation(s)
- Yanhong Chen
- Key Lab of Landscape Plant Genetics and Breeding, School of Life Science, Nantong University, Nantong, Jiangsu Province, China
| | - Yuanhao Dai
- Key Lab of Landscape Plant Genetics and Breeding, School of Life Science, Nantong University, Nantong, Jiangsu Province, China
| | - Yixin Li
- Key Lab of Landscape Plant Genetics and Breeding, School of Life Science, Nantong University, Nantong, Jiangsu Province, China
| | - Jie Yang
- Key Lab of Landscape Plant Genetics and Breeding, School of Life Science, Nantong University, Nantong, Jiangsu Province, China
| | - Yuna Jiang
- Key Lab of Landscape Plant Genetics and Breeding, School of Life Science, Nantong University, Nantong, Jiangsu Province, China
| | - Guoyuan Liu
- Key Lab of Landscape Plant Genetics and Breeding, School of Life Science, Nantong University, Nantong, Jiangsu Province, China
| | - Chunmei Yu
- Key Lab of Landscape Plant Genetics and Breeding, School of Life Science, Nantong University, Nantong, Jiangsu Province, China
| | - Fei Zhong
- Key Lab of Landscape Plant Genetics and Breeding, School of Life Science, Nantong University, Nantong, Jiangsu Province, China
| | - Bolin Lian
- Key Lab of Landscape Plant Genetics and Breeding, School of Life Science, Nantong University, Nantong, Jiangsu Province, China
| | - Jian Zhang
- Key Lab of Landscape Plant Genetics and Breeding, School of Life Science, Nantong University, Nantong, Jiangsu Province, China.
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10
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Zhou L, Yarra R, Yang Y, Liu Y, Yang M, Cao H. The oil palm R2R3-MYB subfamily genes EgMYB111 and EgMYB157 improve multiple abiotic stress tolerance in transgenic Arabidopsis plants. PLANT CELL REPORTS 2022; 41:377-393. [PMID: 34817657 DOI: 10.1007/s00299-021-02814-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 11/12/2021] [Indexed: 06/13/2023]
Abstract
We found that overexpression of EgMYB111 and EgMYB157 genes positively regulate the abiotic stress tolerance. MYB family genes are well-known regulators in modulating the abiotic stress-responsive mechanisms in plants. However, lesser is known about the functional roles of oil palm MYB genes. Previously, we found that oil palm MYB genes such as EgMYB111 and EgMYB157 were significantly up-regulated under salinity, cold, and drought stress conditions. In this study, we over-expressed EgMYB111 and EgMYB157 genes separately in Arabidopsis plants. The transgenic Arabidopsis plants expressing EgMYB111 have shown improved tolerance to salinity, cold and drought stress conditions, whereas transgenic Arabidopsis plants expressing EgMYB157 dispalyed improved tolerance to cold and drought stress conditions only. Various biochemical analyses also revealed significant improvement of antioxidant enzyme activities, photosynthetic pigments, net photosynthetic rate, stomatal conductance, and intercellular CO2 concentration in transgenic plants compared to wild-type plants under cold, drought, and salinity stress conditions. Significant up-regulation of various known stress marker genes such as RD22, RD29A, RAB18, COR47, ABA1, ABI1, HAB1 was also noticed in EgMYB111 and EgMYB157 expressing transgenic plants compared to wild-type plants under cold, drought, and salinity stress conditions. Taken together, over-expression of EgMYB111 and/or EgMYB157 significantly improve abiotic tolerance in transgenic Arabidopsis plants, indicating that EgMYB111 and EgMYB157 are the potential candidates for developing abiotic stress-tolerant crops in near future.
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Affiliation(s)
- Lixia Zhou
- Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Hainan Key Laboratory of Tropical Oil Crops Biology, Wenchang, Hainan, 571339, People's Republic of China.
| | - Rajesh Yarra
- Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Hainan Key Laboratory of Tropical Oil Crops Biology, Wenchang, Hainan, 571339, People's Republic of China
| | - Yaodong Yang
- Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Hainan Key Laboratory of Tropical Oil Crops Biology, Wenchang, Hainan, 571339, People's Republic of China
| | - Yanju Liu
- Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Hainan Key Laboratory of Tropical Oil Crops Biology, Wenchang, Hainan, 571339, People's Republic of China
| | - Mengdi Yang
- Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Hainan Key Laboratory of Tropical Oil Crops Biology, Wenchang, Hainan, 571339, People's Republic of China
| | - Hongxing Cao
- Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Hainan Key Laboratory of Tropical Oil Crops Biology, Wenchang, Hainan, 571339, People's Republic of China
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11
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Jung YJ, Go JY, Lee HJ, Park JS, Kim JY, Lee YJ, Ahn MJ, Kim MS, Cho YG, Kwak SS, Kim HS, Kang KK. Overexpression of Orange Gene ( OsOr-R115H) Enhances Heat Tolerance and Defense-Related Gene Expression in Rice ( Oryza sativa L.). Genes (Basel) 2021; 12:1891. [PMID: 34946840 PMCID: PMC8701904 DOI: 10.3390/genes12121891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/23/2021] [Accepted: 11/25/2021] [Indexed: 12/17/2022] Open
Abstract
In plants, the orange (Or) gene plays roles in regulating carotenoid biosynthesis and responses to environmental stress. The present study investigated whether the expression of rice Or (OsOr) gene could enhance rice tolerance to heat stress conditions. The OsOr gene was cloned and constructed with OsOr or OsOr-R115H (leading to Arg to His substitution at position 115 on the OsOr protein), and transformed into rice plants. The chlorophyll contents and proline contents of transgenic lines were significantly higher than those of non-transgenic (NT) plants under heat stress conditions. However, we found that the levels of electrolyte leakage and malondialdehyde in transgenic lines were significantly reduced compared to NT plants under heat stress conditions. In addition, the levels of expression of four genes related to reactive oxygen species (ROS) scavenging enzymes (OsAPX2, OsCATA, OsCATB, OsSOD-Cu/Zn) and five genes (OsLEA3, OsDREB2A, OsDREB1A, OsP5CS, SNAC1) responded to abiotic stress was showed significantly higher in the transgenic lines than NT plants under heat stress conditions. Therefore, OsOr-R115H could be exploited as a promising strategy for developing new rice cultivars with improved heat stress tolerance.
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Affiliation(s)
- Yu Jin Jung
- Division of Horticultural Biotechnology, Hankyong National University, Anseong 17579, Korea; (Y.J.J.); (J.Y.G.); (H.J.L.); (J.S.P.); (J.Y.K.); (Y.J.L.)
- Institute of Genetic Engineering, Hankyong National University, Anseong 17579, Korea
| | - Ji Yun Go
- Division of Horticultural Biotechnology, Hankyong National University, Anseong 17579, Korea; (Y.J.J.); (J.Y.G.); (H.J.L.); (J.S.P.); (J.Y.K.); (Y.J.L.)
| | - Hyo Ju Lee
- Division of Horticultural Biotechnology, Hankyong National University, Anseong 17579, Korea; (Y.J.J.); (J.Y.G.); (H.J.L.); (J.S.P.); (J.Y.K.); (Y.J.L.)
| | - Jung Soon Park
- Division of Horticultural Biotechnology, Hankyong National University, Anseong 17579, Korea; (Y.J.J.); (J.Y.G.); (H.J.L.); (J.S.P.); (J.Y.K.); (Y.J.L.)
| | - Jin Young Kim
- Division of Horticultural Biotechnology, Hankyong National University, Anseong 17579, Korea; (Y.J.J.); (J.Y.G.); (H.J.L.); (J.S.P.); (J.Y.K.); (Y.J.L.)
| | - Ye Ji Lee
- Division of Horticultural Biotechnology, Hankyong National University, Anseong 17579, Korea; (Y.J.J.); (J.Y.G.); (H.J.L.); (J.S.P.); (J.Y.K.); (Y.J.L.)
| | - Mi-Jeong Ahn
- College of Pharmacy and Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Korea;
| | - Me-Sun Kim
- Department of Crop Science, Chungbuk National University, Cheongju 28644, Korea; (M.-S.K.); (Y.-G.C.)
| | - Yong-Gu Cho
- Department of Crop Science, Chungbuk National University, Cheongju 28644, Korea; (M.-S.K.); (Y.-G.C.)
| | - Sang-Soo Kwak
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea; (S.-S.K.); (H.S.K.)
| | - Ho Soo Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea; (S.-S.K.); (H.S.K.)
| | - Kwon Kyoo Kang
- Division of Horticultural Biotechnology, Hankyong National University, Anseong 17579, Korea; (Y.J.J.); (J.Y.G.); (H.J.L.); (J.S.P.); (J.Y.K.); (Y.J.L.)
- Institute of Genetic Engineering, Hankyong National University, Anseong 17579, Korea
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12
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Song I, Lee YK, Kim JW, Lee SW, Park SR, Lee HK, Oh S, Ko K, Kim MK, Park SJ, Kim DH, Kim MS, Kim DS, Ko K. Effect of an Endoplasmic Reticulum Retention Signal Tagged to Human Anti-Rabies mAb SO57 on Its Expression in Arabidopsis and Plant Growth. Mol Cells 2021; 44:770-779. [PMID: 34711693 PMCID: PMC8560589 DOI: 10.14348/molcells.2021.2002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 08/20/2021] [Accepted: 08/27/2021] [Indexed: 11/30/2022] Open
Abstract
Transgenic Arabidopsis thaliana expressing an anti-rabies monoclonal antibody (mAb), SO57, was obtained using Agrobacterium-mediated floral dip transformation. The endoplasmic reticulum (ER) retention signal Lys-Asp-Glu-Leu (KDEL) was tagged to the C-terminus of the anti-rabies mAb heavy chain to localize the mAb to the ER and enhance its accumulation. When the inaccurately folded proteins accumulated in the ER exceed its storage capacity, it results in stress that can affect plant development and growth. We generated T1 transformants and obtained homozygous T3 seeds from transgenic Arabidopsis to investigate the effect of KDEL on plant growth. The germination rate did not significantly differ between plants expressing mAb SO57 without KDEL (SO plant) and mAb SO57 with KDEL (SOK plant). The primary roots of SOK agar media grown plants were slightly shorter than those of SO plants. Transcriptomic analysis showed that expression of all 11 ER stress-related genes were not significantly changed in SOK plants relative to SO plants. SOK plants showed approximately three-fold higher mAb expression levels than those of SO plants. Consequently, the purified mAb amount per unit of SOK plant biomass was approximately three times higher than that of SO plants. A neutralization assay revealed that both plants exhibited efficient rapid fluorescent focus inhibition test values against the rabies virus relative to commercially available human rabies immunoglobulins. KDEL did not upregulate ER stress-related genes; therefore, the enhanced production of the mAb did not affect plant growth. Thus, KDEL fusion is recommended for enhancing mAb production in plant systems.
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Affiliation(s)
- Ilchan Song
- Department of Medicine, College of Medicine, Chung-Ang University, Seoul 06974, Korea
| | - Young Koung Lee
- Plasma Technology Research Center, National Fusion Research Institute, Gunsan 54004, Korea
| | - Jin Wook Kim
- Department of Urology, College of Medicine, Chung-Ang University, Seoul 06974, Korea
| | - Seung-Won Lee
- Department of Medicine, College of Medicine, Chung-Ang University, Seoul 06974, Korea
| | - Se Ra Park
- Department of Medicine, College of Medicine, Chung-Ang University, Seoul 06974, Korea
| | - Hae Kyung Lee
- Division of Zoonotic and Vector Borne Diseases Research, Korea National Institute of Health, Osong 28159, Korea
| | - Soyeon Oh
- Department of Medicine, College of Medicine, Chung-Ang University, Seoul 06974, Korea
| | - Kinarm Ko
- Department of Stem Cell Biology, Konkuk University School of Medicine, Seoul 05029, Korea
| | - Mi Kyung Kim
- Department of Pathology, College of Medicine, Chung-Ang University, Seoul 06974, Korea
| | - Soon Ju Park
- Division of Biological Sciences, Wonkwang University, Iksan 54538, Korea
| | - Dae Heon Kim
- Department of Biology, Sunchon National University, Sunchon 57922, Korea
| | - Moon-Soo Kim
- Department of Chemistry, Western Kentucky University, Bowling Green, KY 42101, USA
| | - Do Sun Kim
- Vegetable Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration (RDA), Wanju 55365, Korea
| | - Kisung Ko
- Department of Medicine, College of Medicine, Chung-Ang University, Seoul 06974, Korea
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13
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Si W, Liang Q, Chen L, Song F, Chen Y, Jiang H. Ectopic Overexpression of Maize Heat Stress Transcription Factor ZmHsf05 Confers Drought Tolerance in Transgenic Rice. Genes (Basel) 2021; 12:1568. [PMID: 34680963 PMCID: PMC8536174 DOI: 10.3390/genes12101568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 12/26/2022] Open
Abstract
Drought is a key factor affecting plant growth and development. Heat shock transcription factors (Hsfs) have been reported to respond to diverse abiotic stresses, including drought stress. In the present study, functional characterization of maize heat shock transcription factor 05 (ZmHsf05) gene was conducted. Homologous analysis showed that ZmHsf05 belongs to Class A2 Hsfs. The mRNA expression level of ZmHsf05 can be affected by drought, high temperature, salt, and abscisic acid (ABA) treatment. Ectopic overexpression of ZmHsf05 in rice (Oryza sativa) could significantly enhance the drought tolerance. Faced with drought stress, transgenic rice exhibited better phenotypic performance, higher survival rate, higher proline content, and lower leaf water loss rate, compared with wild-type plant Zhonghua11. Additionally, we assessed the agronomic traits of seven transgenic rice lines overexpressing ZmHsf05 and found that ZmHsf05 altered agronomical traits in the field trials. Moreover, rice overexpressing ZmHsf05 was more sensitive to ABA and had either a lower germination rate or shorter shoot length under ABA treatment. The transcription level of key genes in the ABA synthesis and drought-related pathway were significantly improved in transgenic rice after drought stress. Collectively, our results showed that ZmHsf05 could improve drought tolerance in rice, likely in an ABA-dependent manner.
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Affiliation(s)
- Weina Si
- National Engineering Laboratory of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (W.S.); (Q.L.); (L.C.); (F.S.); (Y.C.)
| | - Qizhi Liang
- National Engineering Laboratory of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (W.S.); (Q.L.); (L.C.); (F.S.); (Y.C.)
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, China
| | - Li Chen
- National Engineering Laboratory of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (W.S.); (Q.L.); (L.C.); (F.S.); (Y.C.)
| | - Feiyang Song
- National Engineering Laboratory of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (W.S.); (Q.L.); (L.C.); (F.S.); (Y.C.)
| | - You Chen
- National Engineering Laboratory of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (W.S.); (Q.L.); (L.C.); (F.S.); (Y.C.)
| | - Haiyang Jiang
- National Engineering Laboratory of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; (W.S.); (Q.L.); (L.C.); (F.S.); (Y.C.)
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14
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Xiao S, Hu Q, Zhang X, Si H, Liu S, Chen L, Chen K, Berne S, Yuan D, Lindsey K, Zhang X, Zhu L. Orchestration of plant development and defense by indirect crosstalk of salicylic acid and brassinosteorid signaling via transcription factor GhTINY2. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:4721-4743. [PMID: 33928361 DOI: 10.1093/jxb/erab186] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/25/2021] [Indexed: 06/12/2023]
Abstract
Salicylic acid (SA) and brassinosteroids (BRs) are well known to regulate diverse processes of plant development and stress responses, but the mechanisms by which these phytohormones mediate the growth and defense trade-off are largely unclear. In addition, little is known about the roles of DEHYDRATION RESPONSIVE ELEMENT BINDING transcription factors, especially in biotic stress and plant growth. Here, we identified a cotton (Gossypium hirsutum) APETALA2/ETHYLENE RESPONSIVE FACTOR gene GhTINY2 that is strongly induced by Verticillium dahliae. Overexpression of GhTINY2 in cotton and Arabidopsis enhanced tolerance to V. dahliae, while knockdown of expression increased the susceptibility of cotton to the pathogen. GhTINY2 was found to promote SA accumulation and SA signaling transduction by directly activating expression of WRKY51. Moreover, GhTINY2-overexpressing cotton and Arabidopsis showed retardation of growth, increased sensitivity to inhibitors of BR biosynthesis, down-regulation of several BR-induced genes, and up-regulation of BR-repressed genes, while GhTINY2-RNAi cotton showed the opposite effects. We further determined that GhTINY2 negatively regulates BR signaling by interacting with BRASSINAZOLE-RESISTANT 1 (BZR1) and restraining its transcriptional activation of the expression of INDOLE-3-ACETIC ACID INDUCIBLE 19 (IAA19). These findings indicate that GhTINY2 fine-tunes the trade-off between immunity and growth via indirect crosstalk between WRKY51-mediated SA biosynthesis and BZR1-IAA19-regulated BR signaling.
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Affiliation(s)
- Shenghua Xiao
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Qin Hu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Science, Hubei University, Wuhan 430000, Hubei, China
| | - Xiaojun Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Huan Si
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Shiming Liu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Lin Chen
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Kun Chen
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Sabina Berne
- Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Daojun Yuan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Keith Lindsey
- Department of Biosciences, Durham University, Durham, DH1 3LE, UK
| | - Xianlong Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Longfu Zhu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
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15
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Sun X, Wen C, Xu J, Wang Y, Zhu J, Zhang Y. The apple columnar gene candidate MdCoL and the AP2/ERF factor MdDREB2 positively regulate ABA biosynthesis by activating the expression of MdNCED6/9. TREE PHYSIOLOGY 2021; 41:1065-1076. [PMID: 33238313 DOI: 10.1093/treephys/tpaa162] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 11/18/2020] [Indexed: 06/11/2023]
Abstract
MdCoL, which encodes a putative 2OG-Fe(II) oxygenase, is a strong candidate gene for control of the columnar growth phenotype in apple. However, the mechanism by which MdCoL produces the columnar trait is unclear. Here, we show that MdCoL influences abscisic acid (ABA) biosynthesis through its interactions with the MdDREB2 transcription factor. Expression analyses and transgenic tobacco studies have confirmed that MdCoL is likely a candidate for control of the columnar phenotype. Furthermore, the ABA level in columnar apple trees is significantly higher than that in standard apple trees. A protein interaction experiment has showed that MdCoL interacts with MdDREB2. Transient expression and electrophoretic mobility shift assays have demonstrated that MdDREB2 binds directly to the DRE motif in the MdNCED6 and MdNCED9 (MdNCED6/9) gene promoters, thereby activating the transcription of these ABA biosynthesis genes. In addition, a higher ABA content has been detected following co-overexpression of MdCoL-MdDREB2 when compared with the overexpression of MdCoL or MdDREB2 alone. Taken together, our results indicate that an interaction between MdCoL and MdDREB2 promotes the expression of MdNCED6/9 and increases ABA levels, a phenomenon that may underlie the columnar growth phenotype in apple.
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Affiliation(s)
- Xin Sun
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Qingdao Key Laboratory of Genetic Development and Breeding in Horticultural Plants, Qingdao 266109, China
| | - Cuiping Wen
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
| | - Jihua Xu
- Qingdao Key Laboratory of Genetic Development and Breeding in Horticultural Plants, Qingdao 266109, China
| | - Yihe Wang
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
| | - Jun Zhu
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
| | - Yugang Zhang
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China
- Qingdao Key Laboratory of Genetic Development and Breeding in Horticultural Plants, Qingdao 266109, China
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16
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Nabi RBS, Tayade R, Hussain A, Adhikari A, Lee IJ, Loake GJ, Yun BW. A Novel DUF569 Gene Is a Positive Regulator of the Drought Stress Response in Arabidopsis. Int J Mol Sci 2021; 22:ijms22105316. [PMID: 34070080 PMCID: PMC8158135 DOI: 10.3390/ijms22105316] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/09/2021] [Accepted: 05/10/2021] [Indexed: 12/30/2022] Open
Abstract
In the last two decades, global environmental change has increased abiotic stress on plants and severely affected crops. For example, drought stress is a serious abiotic stress that rapidly and substantially alters the morphological, physiological, and molecular responses of plants. In Arabidopsis, several drought-responsive genes have been identified; however, the underlying molecular mechanism of drought tolerance in plants remains largely unclear. Here, we report that the “domain of unknown function” novel gene DUF569 (AT1G69890) positively regulates drought stress in Arabidopsis. The Arabidopsis loss-of-function mutant atduf569 showed significant sensitivity to drought stress, i.e., severe wilting at the rosette-leaf stage after water was withheld for 3 days. Importantly, the mutant plant did not recover after rewatering, unlike wild-type (WT) plants. In addition, atduf569 plants showed significantly lower abscisic acid accumulation under optimal and drought-stress conditions, as well as significantly higher electrolyte leakage when compared with WT Col-0 plants. Spectrophotometric analyses also indicated a significantly lower accumulation of polyphenols, flavonoids, carotenoids, and chlorophylls in atduf569 mutant plants. Overall, our results suggest that novel DUF569 is a positive regulator of the response to drought in Arabidopsis.
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Affiliation(s)
- Rizwana Begum Syed Nabi
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (R.B.S.N.); (R.T.); (A.A.); (I.-J.L.)
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Miryang 50424, Korea
| | - Rupesh Tayade
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (R.B.S.N.); (R.T.); (A.A.); (I.-J.L.)
| | - Adil Hussain
- Department of Agriculture, Abdul Wali Khan University, Mardan 230200, Pakistan;
| | - Arjun Adhikari
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (R.B.S.N.); (R.T.); (A.A.); (I.-J.L.)
| | - In-Jung Lee
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (R.B.S.N.); (R.T.); (A.A.); (I.-J.L.)
| | - Gary J. Loake
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, King’s Buildings, Edinburgh EH9 3JH, UK
- Correspondence: (G.J.L.); (B.-W.Y.)
| | - Byung-Wook Yun
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (R.B.S.N.); (R.T.); (A.A.); (I.-J.L.)
- Correspondence: (G.J.L.); (B.-W.Y.)
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17
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Sharma MMM, Ramekar RV, Park NI, Choi IY, Choi SK, Park KC. Editor's introduction to this issue (G&I 19:1, 2021). Genomics Inform 2021; 19:e45. [PMID: 35172475 PMCID: PMC8752983 DOI: 10.5808/gi.21055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 09/29/2021] [Indexed: 11/20/2022] Open
Abstract
Brassica napus is the third most important oilseed crop in the world; however, in Korea, it is greatly affected by cold stress, limiting seed growth and production. Plants have developed specific stress responses that are generally divided into three categories: cold-stress signaling, transcriptional/post-transcriptional regulation, and stress-response mechanisms. Large numbers of functional and regulatory proteins are involved in these processes when triggered by cold stress. Here, our objective was to investigate the different genetic factors involved in the cold-stress responses of B. napus. Consequently, we treated the Korean B. napus cultivar Naehan at the 4-week stage in cold chambers under different conditions, and RNA and cDNA were obtained. An in silico analysis included 80 cold-responsive genes downloaded from the National Center for Biotechnology Information (NCBI) database. Expression levels were assessed by reverse transcription polymerase chain reaction, and 14 cold-triggered genes were identified under cold-stress conditions. The most significant genes encoded zinc-finger proteins (33.7%), followed by MYB transcription factors (7.5%). In the future, we will select genes appropriate for improving the cold tolerance of B. napus.
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Affiliation(s)
| | - Rahul Vasudeo Ramekar
- Department of Agriculture and Life Industries, Kangwon National University, Chuncheon 24341, Korea
| | - Nam-Il Park
- Department of Plant Science, Gangneung-Wonju National University, Gangneung 25457, Korea
| | - Ik-Young Choi
- Department of Agriculture and Life Industries, Kangwon National University, Chuncheon 24341, Korea
| | - Seon-Kang Choi
- Department of Agriculture and Life Industries, Kangwon National University, Chuncheon 24341, Korea
| | - Kyong-Cheul Park
- Department of Agriculture and Life Industries, Kangwon National University, Chuncheon 24341, Korea
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18
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Li W, Geng Z, Zhang C, Wang K, Jiang X. Whole-genome characterization of Rosa chinensis AP2/ERF transcription factors and analysis of negative regulator RcDREB2B in Arabidopsis. BMC Genomics 2021; 22:90. [PMID: 33509074 PMCID: PMC7844920 DOI: 10.1186/s12864-021-07396-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 01/19/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Rose (Rosa chinensis) is a traditional famous flower with valuable ornamental characteristics. However, drought stress restricts its growth and development, leading to an abnormal phenotype. One of the main transcription factor (TF) protein groups in the plant kingdom are the APETALA2/ethylene-responsive factor (AP2/ERF) proteins and are potentially involved in the growth and stress responses of various plants. RESULTS Our investigation mainly focused on exploring the genome of rose and thereby we discovered 135 apparent AP2/ERF TFs. Phylogenic analyses revealed that RcAP2/ERF genes are categorized into DREB, Soloist, AP2, and ERF subfamilies, and are further classified these into 17 groups, with the same as Malus domestica and Arabidopsis thaliana. The analysis of the gene structure revealed that the introns ranged from 0 to 9 in number. Pattern examination demonstrated that the RcAP2/ERF predominantly consists of typical AP2 domains, of which the 2nd motif is the most ubiquitous. Distributions of cis-acting elements indicated that members of the AP2/ERF family are frequently involved in growth and development, phytohormone and stress response in rose species. Also, the distribution mapping of the rose chromosomes indicated that AP2/ERF class genes are dispersed among all seven chromosomes. Additionally, we isolated a novel DREB A2 subgroup gene and named it RcDREB2B. Subsequently, the RcDREB2B transcript accumulation was repressed under the mild and severe drought stress in the root samples of rose. RcDREB2B was targeted to the nucleus and exhibited transactivation in yeast cells. The overexpression of RcDREB2B was found to promote sensitivity to a higher salt concentration, ABA, and PEG at the germination and post-germination stages. Twelve putative osmotic and ABA-related genes were impaired in RcDREB2B-overexpressing plants. CONCLUSIONS The results provide comprehensive information regarding the gene structure, phylogenic, and distribution of the rose AP2/ERF family and bring insight into the complex transcriptional gene regulation of RcAP2/ERF. Findings in this study would also contribute to further understanding of the RcDREB2B gene in rose.
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Affiliation(s)
- Wei Li
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Ziwen Geng
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Cuiping Zhang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Kuiling Wang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Xinqiang Jiang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China.
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19
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Li M, Yang Y, Raza A, Yin S, Wang H, Zhang Y, Dong J, Wang G, Zhong C, Zhang H, Liu J, Jin W. Heterologous expression of Arabidopsis thaliana rty gene in strawberry (Fragaria × ananassa Duch.) improves drought tolerance. BMC PLANT BIOLOGY 2021; 21:57. [PMID: 33478380 PMCID: PMC7818561 DOI: 10.1186/s12870-021-02839-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Strawberry (Fragaria × ananassa Duch.) is an important fruit crop worldwide. It was particularly sensitive to drought stress because of their fibrous and shallow root systems. Mutant rty of Arabidopsis thaliana ROOTY (RTY) results in increased endogenous auxin levels, more roots, and shoot growth. It is still unclear whether the rty gene improves stress tolerance in strawberry. RESULTS rty gene was isolated from Arabidopsis thaliana and placed under the control of the cauliflower mosaic virus (CaMV) 35S promoter in the pBI121-rty binary vector carrying the selectable marker of neomycin phosphotransferase II (NPT II). Seven transgenic lines were confirmed by PCR and western blot analysis. Accumulations of IAA and ABA were significantly increased in the transgenic plants. The endogenous IAA contents were 46.5 ng g- 1 and 66.0 ng g- 1in control and transgenic plants respectively. The endogenous ABA contents in the control plant were 236.3 ng g- 1 and in transgenic plants were 543.8 ng g- 1. The production of adventitious roots and trichomes were enhanced in the transgenic plants. Furthermore, transcript levels of the genes including IAA and ABA biosynthetic, and stress-responsive genes, were higher in the transgenic plants than in the control plants under drought conditions. Water use efficiency and a reduced water loss rate were enhanced in the transgenic strawberry plants. Additionally, peroxidase and catalase activities were significantly higher in the transgenic plants than in the control plants. The experiment results revealed a novel function for rty related to ABA and drought responses. CONCLUSIONS The rty gene improved hormone-mediated drought tolerance in transgenic strawberry. The heterologous expression of rty in strawberry improved drought tolerance by promoting auxin and ABA accumulation. These phytohormones together brought about various physiological changes that improved drought tolerance via increased root production, trichome density, and stomatal closure. Our results suggested that a transgenic approach can be used to overcome the inherent trade-off between plant growth and drought tolerance by enhancing water use efficiency and reducing water loss rate under water shortage conditions.
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Affiliation(s)
- Maofu Li
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
| | - Yuan Yang
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing, 100093, P. R. China
| | - Ali Raza
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, 430062, P. R. China
| | - Shanshan Yin
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
| | - Hua Wang
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
| | - Yuntao Zhang
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing, 100093, P. R. China
| | - Jing Dong
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing, 100093, P. R. China
| | - Guixia Wang
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing, 100093, P. R. China
| | - Chuanfei Zhong
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing, 100093, P. R. China
| | - Hong Zhang
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
| | - Jiashen Liu
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
| | - Wanmei Jin
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China.
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China.
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Yang J, Wang H, Zhao S, Liu X, Zhang X, Wu W, Li C. Overexpression Levels of LbDREB6 Differentially Affect Growth, Drought, and Disease Tolerance in Poplar. FRONTIERS IN PLANT SCIENCE 2020; 11:528550. [PMID: 33304356 PMCID: PMC7693672 DOI: 10.3389/fpls.2020.528550] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 10/06/2020] [Indexed: 06/05/2023]
Abstract
The application of drought stress-regulating transcription factors (TFs) offers a credible way to improve drought tolerance in plants. However, many drought resistant TFs always showed unintended adverse effects on plant growth or other traits. Few studies have been conducted in trees to evaluate and overcome the pleiotropic effects of drought tolerance TFs. Here, we report the dose-dependent effect of the Limonium bicolor LbDREB6 gene on its overexpression in Populus ussurensis. High- and moderate-level overexpression of LbDREB6 significantly increased drought tolerance in a dose-dependent manner. However, the OE18 plants showed stunted growth under normal conditions, but they were also more sensitive to Marssonina brunnea infection than wild type (WT) and OE14 plants. While, OE14 showed normal growth, the pathogen tolerance of them was not significantly different from WT. Many stress-responsive genes were up-regulated in OE18 and OE14 compared to WT, especially for OE18 plants. Meanwhile, more pathogen tolerance related genes were down-regulated in OE18 compared to OE14 and WT plants. We achieved improved drought tolerance by adjusting the increased levels of exogenous DREB genes to avoid the occurrence of growth reduction and reduced disease tolerance.
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Affiliation(s)
- Jingli Yang
- State Key Laboratory of Forest Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Hanzeng Wang
- State Key Laboratory of Forest Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Shicheng Zhao
- School of Pharmacy, Harbin University of Commerce, Harbin, China
| | - Xiao Liu
- State Key Laboratory of Forest Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Xin Zhang
- State Key Laboratory of Forest Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Weilin Wu
- Agriculture College of Yanbian University, Yanji, China
| | - Chenghao Li
- State Key Laboratory of Forest Genetics and Breeding, Northeast Forestry University, Harbin, China
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Knockdown of a Novel Gene OsTBP2.2 Increases Sensitivity to Drought Stress in Rice. Genes (Basel) 2020; 11:genes11060629. [PMID: 32521717 PMCID: PMC7349065 DOI: 10.3390/genes11060629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/05/2020] [Accepted: 06/05/2020] [Indexed: 02/06/2023] Open
Abstract
Drought stress is a major environmental stress, which adversely affects the biological and molecular processes of plants, thereby impairing their growth and development. In the present study, we found that the expression level of OsTBP2.2 which encodes for a nucleus-localized protein member belonging to transcription factor IID (TFIID) family, was significantly induced by polyethylene glycol (PEG) treatment. Therefore, knockdown mutants of OsTBP2.2 gene were generated to investigate the role of OsTBP2.2 in rice response to drought stress. Under the condition of drought stress, the photosynthetic rate, transpiration rate, water use efficiency, and stomatal conductance were significantly reduced in ostbp2.2 lines compared with wild type, Dongjin (WT-DJ). Furthermore, the RNA-seq results showed that several main pathways involved in "MAPK (mitogen-activated protein kinase) signaling pathway", "phenylpropanoid biosynthesis", "defense response" and "ADP (adenosine diphosphate) binding" were altered significantly in ostbp2.2. We also found that OsPIP2;6, OsPAO and OsRCCR1 genes were down-regulated in ostbp2.2 compared with WT-DJ, which may be one of the reasons that inhibit photosynthesis. Our findings suggest that OsTBP2.2 may play a key role in rice growth and the regulation of photosynthesis under drought stress and it may possess high potential usefulness in molecular breeding of drought-tolerant rice.
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Jannesar M, Seyedi SM, Moazzam Jazi M, Niknam V, Ebrahimzadeh H, Botanga C. A genome-wide identification, characterization and functional analysis of salt-related long non-coding RNAs in non-model plant Pistacia vera L. using transcriptome high throughput sequencing. Sci Rep 2020; 10:5585. [PMID: 32221354 PMCID: PMC7101358 DOI: 10.1038/s41598-020-62108-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/09/2020] [Indexed: 11/09/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) play crucial roles in regulating gene expression in response to plant stresses. Given the importance regulatory roles of lncRNAs, providing methods for predicting the function of these molecules, especially in non-model plants, is strongly demanded by researchers. Here, we constructed a reference sequence for lncRNAs in P. vera (Pistacia vera L.) with 53220 transcripts. In total, we identified 1909 and 2802 salt responsive lncRNAs in Ghazvini, a salt tolerant cultivar, after 6 and 24 h salt treatment, respectively and 1820 lncRNAs in Sarakhs, a salt sensitive cultivar, after 6 h salt treatment. Functional analysis of these lncRNAs by several hybrid methods, revealed that salt responsive NAT-related lncRNAs associated with transcription factors, CERK1, LEA, Laccase genes and several genes involved in the hormone signaling pathways. Moreover, gene ontology (GO) enrichment analysis of salt responsive target genes related to top five selected lncRNAs showed their involvement in the regulation of ATPase, cation transporter, kinase and UDP-glycosyltransferases genes. Quantitative real-time PCR (qRT-PCR) experiment results of lncRNAs, pre-miRNAs and mature miRNAs were in accordance with our RNA-seq analysis. In the present study, a comparative analysis of differentially expressed lncRNAs and microRNA precursors between salt tolerant and sensitive pistachio cultivars provides valuable knowledge on gene expression regulation under salt stress condition.
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Affiliation(s)
- Masoomeh Jannesar
- Department of Plant Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
- Plant Biotechnology Department, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Seyed Mahdi Seyedi
- Plant Biotechnology Department, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran.
| | - Maryam Moazzam Jazi
- Research Institute for Endocrine Science (RIES), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Vahid Niknam
- Department of Plant Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran.
| | - Hassan Ebrahimzadeh
- Department of Plant Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Christopher Botanga
- Department of Biological Sciences, Chicago State University, Chicago, Illinois, United States of America
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Comprehensive phylogenomic analysis of ERF genes in sorghum provides clues to the evolution of gene functions and redundancy among gene family members. 3 Biotech 2020; 10:139. [PMID: 32158635 DOI: 10.1007/s13205-020-2120-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 02/05/2020] [Indexed: 10/24/2022] Open
Abstract
APETALA2/Ethylene-Responsive transcription factors (AP2/ERF), with their multifunctional roles in plant development, hormone signaling and stress tolerance, are important candidates for engineering crop plants. Here, we report identification and analysis of gene structure, phylogenetic distribution, expression, chromosomal localization and cis-acting promoter analysis of AP2/ERF genes in the C4 crop plant sorghum. We identified 158 ERF genes in sorghum with 52 of them encoding dehydration-responsive binding elements (DREB) while 106 code for ERF subfamily proteins. Phylogenetic analysis organized sorghum ERF proteins into 11 distinct groups exhibiting clade-specific expansion. About 68% ERF genes have paralogs indicating gene duplications as major cause of expansion of ERF family in sorghum. Analysis of spatiotemporal expression patterns using publicly available data revealed their tissue/genotype-preferential accumulation. In addition, 40 ERF genes exhibited differential accumulation in response to heat and/or drought stress. About 25% of the segmental gene pairs and eleven tandem duplicated genes exhibited high correlation (> 0.7) in their expression patterns indicating genetic redundancy. Comparative phylogenomic analysis of sorghum ERFs with 74 genetically characterized ERF genes from other plant species provided significant clues to sorghum ERF functions. Overall data generated here provides an overview of evolutionary relationship among ERF gene family members in sorghum and with respect to previously characterized ERF genes from other plant species. This information will be instrumental in initiating functional genomic studies of ERF candidates in sorghum.
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24
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Liu F, Zhao Q, Jia Z, Song C, Huang Y, Ma H, Song S. N-3-oxo-octanoyl-homoserine lactone-mediated priming of resistance to Pseudomonas syringae requires the salicylic acid signaling pathway in Arabidopsis thaliana. BMC PLANT BIOLOGY 2020; 20:38. [PMID: 31992205 PMCID: PMC6986161 DOI: 10.1186/s12870-019-2228-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 12/30/2019] [Indexed: 05/06/2023]
Abstract
BACKGROUD Many Gram-negative bacteria use N-acyl-homoserine lactones (AHLs) to communicate each other and to coordinate their collective behaviors. Recently, accumulating evidence shows that host plants are able to sense and respond to bacterial AHLs. Once primed, plants are in an altered state that enables plant cells to more quickly and/or strongly respond to subsequent pathogen infection or abiotic stress. RESULTS In this study, we report that pretreatment with N-3-oxo-octanoyl-homoserine lactone (3OC8-HSL) confers resistance against the pathogenic bacterium Pseudomonas syringae pv. tomato DC3000 (PstDC3000) in Arabidopsis. Pretreatment with 3OC8-HSL and subsequent pathogen invasion triggered an augmented burst of hydrogen peroxide, salicylic acid accumulation, and fortified expression of the pathogenesis-related genes PR1 and PR5. Upon PstDC3000 challenge, plants treated with 3OC8-HSL showed increased activities of defense-related enzymes including peroxidase, catalase, phenylalanine ammonialyase, and superoxide dismutase. In addition, the 3OC8-HSL-primed resistance to PstDC3000 in wild-type plants was impaired in plants expressing the bacterial NahG gene and in the npr1 mutant. Moreover, the expression levels of isochorismate synthases (ICS1), a critical salicylic acid biosynthesis enzyme, and two regulators of its expression, SARD1 and CBP60g, were potentiated by 3OC8-HSL pretreatment followed by pathogen inoculation. CONCLUSIONS Our data indicate that 3OC8-HSL primes the Arabidopsis defense response upon hemibiotrophic bacterial infection and that 3OC8-HSL-primed resistance is dependent on the SA signaling pathway. These findings may help establish a novel strategy for the control of plant disease.
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Affiliation(s)
- Fang Liu
- Biology Institute, Hebei Academy of Sciences, 46th South Street of Friendship, Shijiazhuang, 050051, China
- Hebei Engineering and Technology Center of Microbiological Control on Main Crop Disease, 46th South Street of Friendship, Shijiazhuang, 050051, China
| | - Qian Zhao
- Biology Institute, Hebei Academy of Sciences, 46th South Street of Friendship, Shijiazhuang, 050051, China
- Hebei Engineering and Technology Center of Microbiological Control on Main Crop Disease, 46th South Street of Friendship, Shijiazhuang, 050051, China
| | - Zhenhua Jia
- Biology Institute, Hebei Academy of Sciences, 46th South Street of Friendship, Shijiazhuang, 050051, China.
- Hebei Engineering and Technology Center of Microbiological Control on Main Crop Disease, 46th South Street of Friendship, Shijiazhuang, 050051, China.
| | - Cong Song
- Biology Institute, Hebei Academy of Sciences, 46th South Street of Friendship, Shijiazhuang, 050051, China
- Hebei Engineering and Technology Center of Microbiological Control on Main Crop Disease, 46th South Street of Friendship, Shijiazhuang, 050051, China
| | - Yali Huang
- Biology Institute, Hebei Academy of Sciences, 46th South Street of Friendship, Shijiazhuang, 050051, China
- Hebei Engineering and Technology Center of Microbiological Control on Main Crop Disease, 46th South Street of Friendship, Shijiazhuang, 050051, China
| | - Hong Ma
- Biology Institute, Hebei Academy of Sciences, 46th South Street of Friendship, Shijiazhuang, 050051, China
- Hebei Engineering and Technology Center of Microbiological Control on Main Crop Disease, 46th South Street of Friendship, Shijiazhuang, 050051, China
| | - Shuishan Song
- Biology Institute, Hebei Academy of Sciences, 46th South Street of Friendship, Shijiazhuang, 050051, China.
- Hebei Engineering and Technology Center of Microbiological Control on Main Crop Disease, 46th South Street of Friendship, Shijiazhuang, 050051, China.
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Xiao X, Lv J, Xie J, Feng Z, Ma N, Li J, Yu J, Calderón-Urrea A. Transcriptome Analysis Reveals the Different Response to Toxic Stress in Rootstock Grafted and Non-Grafted Cucumber Seedlings. Int J Mol Sci 2020; 21:ijms21030774. [PMID: 31991638 PMCID: PMC7037640 DOI: 10.3390/ijms21030774] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/20/2020] [Accepted: 01/22/2020] [Indexed: 11/20/2022] Open
Abstract
Autotoxicity of root exudates is one of the main reasons for consecutive monoculture problem (CMP) in cucumber under greenhouse cultivation. Rootstock grafting may improve the tolerance of cucumber plants to autotoxic stress. To verify the enhanced tolerance to autotoxic stress and illuminate relevant molecular mechanism, a transcriptomic comparative analysis was performed between rootstock grafted (RG) and non-grafted (NG) cucumber plants by a simulation of exogenous cinnamic acid (CA). The present study confirmed that relatively stable plant growth, biomass accumulation, chlorophyll content, and photosynthesis was observed in RG than NG under CA stress. We identified 3647 and 2691 differentially expressed genes (DEGs) in NG and RG cucumber plants when compared to respective control, and gene expression patterns of RNA-seq was confirmed by qRT-PCR. Functional annotations revealed that DEGs response to CA stress were enriched in pathways of plant hormone signal transduction, MAPK signaling pathway, phenylalanine metabolism, and plant-pathogen interaction. Interestingly, the significantly enriched pathway of photosynthesis-related, carbon and nitrogen metabolism only identified in NG, and most of DEGs were down-regulated. However, most of photosynthesis, Calvin cycle, glycolysis, TCA cycle, and nitrogen metabolism-related DEGs exhibited not or slightly down-regulated in RG. In addition, several stress-related transcription factor families of AP2/ERF, bHLH, bZIP, MYB. and NAC were uniquely triggered in the grafted cucumbers. Overall, the results of this study suggest that rootstock grafting improve the tolerance of cucumber plants to autotoxic stress by mediating down-regulation of photosynthesis, carbon, and nitrogen metabolism-related DEGs and activating the function of stress-related transcription factor. The transcriptome dataset provides an extensive sequence resource for further studies of autotoxic mechanism at molecular level.
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Affiliation(s)
- Xuemei Xiao
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Jian Lv
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Jianming Xie
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Zhi Feng
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Ning Ma
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Ju Li
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
| | - Jihua Yu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; (X.X.); (J.L.); (Z.F.); (N.M.)
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
- Correspondence: ; Tel.: +86-0931-7632188
| | - Alejandro Calderón-Urrea
- College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China;
- Department of Biology, College of Science and Mathematics, California State University, Fresno, CA 97340, USA
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Li Y, Liu F, Li P, Wang T, Zheng C, Hou B. An Arabidopsis Cytokinin-Modifying Glycosyltransferase UGT76C2 Improves Drought and Salt Tolerance in Rice. FRONTIERS IN PLANT SCIENCE 2020; 11:560696. [PMID: 33224159 PMCID: PMC7674613 DOI: 10.3389/fpls.2020.560696] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 10/09/2020] [Indexed: 05/10/2023]
Abstract
Drought and salt stresses are common environmental threats that negatively affect rice development and yield. Here we report that the overexpression of AtUGT76C2, a cytokinin glycosyltransferase, in rice modulates cytokinin homeostasis and confers the plants an eminent property in drought and salt tolerance. The transgenic plants exhibit sensitivity to salt and drought stress as well as abscisic acid during the germination stage and the postgermination stage while showing enhanced tolerance to drought and salinity at the young seedling stage and the mature stage. The overexpression of UGT76C2 decreases the endogenous cytokinin level and enhances root growth, which greatly contributes to stress adaptation. In addition, the transgenic plants also show enhanced ROS scavenging activity, reduced ion leakage under salt stress, smaller stomatal opening, and more proline and soluble sugar accumulation, which demonstrate that UGT76C2 acts as an important player in abiotic stress response in rice. To explore the molecular mechanism of UGT76C2 in response to stress adaptation, the expressions of eight stress-responsive genes including OsSOS1, OsPIP2.1, OsDREB2A, OsCOIN, OsABF2, OsRAB16, OsP5CR, and OsP5CS1 were detected, which showed notable upregulation in UGT76C2 overexpression plants under salt and drought stresses. Our results reveal that the ectopic expression of AtUGT76C2 confers the transgenic rice many traits in improving drought and salt stress tolerance in both developmental and physiological levels. It is believed that AtUGT76C2 could be a promising candidate gene for cultivating saline- and drought-tolerant rice.
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Affiliation(s)
- Yanjie Li
- The Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, Shandong University, Qingdao, China
- School of Life Sciences, Shandong University, Qingdao, China
| | - Fangfei Liu
- The Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, Shandong University, Qingdao, China
- School of Life Sciences, Shandong University, Qingdao, China
| | - Pan Li
- College of Pharmacy>, Liaocheng University, Liaocheng, China
| | - Ting Wang
- The Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, Shandong University, Qingdao, China
- School of Life Sciences, Shandong University, Qingdao, China
| | - Chengchao Zheng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, China
| | - Bingkai Hou
- The Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, Shandong University, Qingdao, China
- School of Life Sciences, Shandong University, Qingdao, China
- *Correspondence: Bingkai Hou,
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Zhao MJ, Yin LJ, Liu Y, Ma J, Zheng JC, Lan JH, Fu JD, Chen M, Xu ZS, Ma YZ. The ABA-induced soybean ERF transcription factor gene GmERF75 plays a role in enhancing osmotic stress tolerance in Arabidopsis and soybean. BMC PLANT BIOLOGY 2019; 19:506. [PMID: 31747904 PMCID: PMC6865046 DOI: 10.1186/s12870-019-2066-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 10/02/2019] [Indexed: 05/06/2023]
Abstract
BACKGROUND Ethylene-responsive factors (ERFs) play important roles in plant growth and development and the response to adverse environmental factors, including abiotic and biotic stresses. RESULTS In the present study, we identified 160 soybean ERF genes distributed across 20 chromosomes that could be clustered into eight groups based on phylogenetic relationships. A highly ABA-responsive ERF gene, GmERF75, belonging to Group VII was further characterized. Subcellular localization analysis showed that the GmERF75 protein is localized in the nucleus, and qRT-PCR results showed that GmERF75 is responsive to multiple abiotic stresses and exogenous hormones. GmERF75-overexpressing Arabidopsis lines showed higher chlorophyll content compared to WT and mutants under osmotic stress. Two independent Arabidopsis mutations of AtERF71, a gene homologous to GmERF75, displayed shorter hypocotyls, and overexpression of GmERF75 in these mutants could rescue the short hypocotyl phenotypes. Overexpressing GmERF75 in soybean hairy roots improved root growth under exogenous ABA and salt stress. CONCLUSIONS These results suggested that GmERF75 is an important plant transcription factor that plays a critical role in enhancing osmotic tolerance in both Arabidopsis and soybean.
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Affiliation(s)
- Meng-Jie Zhao
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081 China
| | - Li-Juan Yin
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081 China
| | - Ying Liu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081 China
| | - Jian Ma
- Faculty of Agronomy, Jilin Agricultural University, Changchun, 130118 China
| | - Jia-Cheng Zheng
- Anhui Science and Technology University, Fengyang, 233100 China
| | - Jin-Hao Lan
- College of Agronomy, Qingdao Agricultural University, Qingdao, 266109 China
| | - Jin-Dong Fu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081 China
| | - Ming Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081 China
| | - Zhao-Shi Xu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081 China
- Faculty of Agronomy, Jilin Agricultural University, Changchun, 130118 China
- Anhui Science and Technology University, Fengyang, 233100 China
| | - You-Zhi Ma
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, 100081 China
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Sarkar T, Thankappan R, Mishra GP, Nawade BD. Advances in the development and use of DREB for improved abiotic stress tolerance in transgenic crop plants. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2019; 25:1323-1334. [PMID: 31736537 PMCID: PMC6825097 DOI: 10.1007/s12298-019-00711-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 05/07/2019] [Accepted: 08/29/2019] [Indexed: 05/09/2023]
Abstract
Abiotic stresses negatively influence the survival, biomass production, and yield of crops. Tolerance to diverse abiotic stresses in plants is regulated by multiple genes responding differently to various stress conditions. Genetic engineering approaches have helped develop transgenic crops with improved abiotic stress tolerance including yields. The dehydration-responsive element binding protein (DREB) is a stress-responsive transcription factor that modulates the expression of downstream stress-inducible genes, which confer simultaneous tolerance to multiple stresses. This review focuses on advances in the development of DREB transgenic crops and their characterization under various abiotic stress conditions. It further discusses the mechanistic aspects of abiotic stress tolerance, yield gain, the fate of transgenic plants under controlled and field conditions and future research directions toward commercialization of DREB transgenic crops.
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Affiliation(s)
- Tanmoy Sarkar
- ICAR-Directorate of Groundnut Research, Post Box 1, Junagadh, Gujarat 362001 India
- Central Sericultural Research & Training Institute (CSRTI), Mysuru, Karnataka 570 008 India
| | | | - Gyan P. Mishra
- ICAR-Directorate of Groundnut Research, Post Box 1, Junagadh, Gujarat 362001 India
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, Delhi 110012 India
| | - Bhagwat D. Nawade
- ICAR-Directorate of Groundnut Research, Post Box 1, Junagadh, Gujarat 362001 India
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Srivastava R, Kumar R. The expanding roles of APETALA2/Ethylene Responsive Factors and their potential applications in crop improvement. Brief Funct Genomics 2019; 18:240-254. [PMID: 30783669 DOI: 10.1093/bfgp/elz001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 11/29/2018] [Accepted: 01/23/2019] [Indexed: 01/10/2023] Open
Abstract
Understanding the molecular basis of the gene-regulatory networks underlying agronomic traits or plant responses to abiotic/biotic stresses is very important for crop improvement. In this context, transcription factors, which either singularly or in conjugation directly control the expression of many target genes, are suitable candidates for improving agronomic traits via genetic engineering. In this regard, members of one of the largest class of plant-specific APETALA2/Ethylene Response Factor (AP2/ERF) superfamily, which is implicated in various aspects of development and plant stress adaptation responses, are considered high-value targets for crop improvement. Besides their long-known regulatory roles in mediating plant responses to abiotic stresses such as drought and submergence, the novel roles of AP2/ERFs during fruit ripening or secondary metabolites production have also recently emerged. The astounding functional plasticity of AP2/ERF members is considered to be achieved by their interplay with other regulatory networks and signalling pathways. In this review, we have integrated the recently accumulated evidence from functional genomics studies and described their newly emerged functions in plants. The key structural features of AP2/ERF proteins and the modes of their action are briefly summarized. The importance of AP2/ERFs in plant development and stress responses and a summary of the event of their successful applications in crop improvement programs are also provided. Altogether, we envisage that the synthesized information presented in this review will be useful to design effective strategies for improving agronomic traits in crop plants.
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Affiliation(s)
- Rajat Srivastava
- Plant Translational Research Laboratory, Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Rahul Kumar
- Plant Translational Research Laboratory, Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, India
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Noman M, Jameel A, Qiang WD, Ahmad N, Liu WC, Wang FW, Li HY. Overexpression of GmCAMTA12 Enhanced Drought Tolerance in Arabidopsis and Soybean. Int J Mol Sci 2019; 20:E4849. [PMID: 31569565 PMCID: PMC6801534 DOI: 10.3390/ijms20194849] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/24/2019] [Accepted: 09/26/2019] [Indexed: 02/07/2023] Open
Abstract
Fifteen transcription factors in the CAMTA (calmodulin binding transcription activator) family of soybean were reported to differentially regulate in multiple stresses; however, their functional analyses had not yet been attempted. To characterize their role in stresses, we first comprehensively analyzed the GmCAMTA family in silico and thereafter determined their expression pattern under drought. The bioinformatics analysis revealed multiple stress-related cis-regulatory elements including ABRE, SARE, G-box and W-box, 10 unique miRNA (microRNA) targets in GmCAMTA transcripts and 48 proteins in GmCAMTAs' interaction network. We then cloned the 2769 bp CDS (coding sequence) of GmCAMTA12 in an expression vector and overexpressed in soybean and Arabidopsis through Agrobacterium-mediated transformation. The T3 (Transgenic generation 3) stably transformed homozygous lines of Arabidopsis exhibited enhanced tolerance to drought in soil as well as on MS (Murashige and Skoog) media containing mannitol. In their drought assay, the average survival rate of transgenic Arabidopsis lines OE5 and OE12 (Overexpression Line 5 and Line 12) was 83.66% and 87.87%, respectively, which was ~30% higher than that of wild type. In addition, the germination and root length assays as well as physiological indexes such as proline and malondialdehyde contents, catalase activity and leakage of electrolytes affirmed the better performance of OE lines. Similarly, GmCAMTA12 overexpression in soybean promoted drought-efficient hairy roots in OE chimeric plants as compare to that of VC (Vector control). In parallel, the improved growth performance of OE in Hoagland-PEG (polyethylene glycol) and on MS-mannitol was revealed by their phenotypic, physiological and molecular measures. Furthermore, with the overexpression of GmCAMTA12, the downstream genes including AtAnnexin5, AtCaMHSP, At2G433110 and AtWRKY14 were upregulated in Arabidopsis. Likewise, in soybean hairy roots, GmELO, GmNAB and GmPLA1-IId were significantly upregulated as a result of GmCAMTA12 overexpression and majority of these upregulated genes in both plants possess CAMTA binding CGCG/CGTG motif in their promoters. Taken together, we report that GmCAMTA12 plays substantial role in tolerance of soybean against drought stress and could prove to be a novel candidate for engineering soybean and other plants against drought stress. Some research gaps were also identified for future studies to extend our comprehension of Ca-CaM-CAMTA-mediated stress regulatory mechanisms.
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Affiliation(s)
- Muhammad Noman
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Aysha Jameel
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Wei-Dong Qiang
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Naveed Ahmad
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Wei-Can Liu
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Fa-Wei Wang
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Hai-Yan Li
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
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Tang Y, Bao X, Wang S, Liu Y, Tan J, Yang M, Zhang M, Dai R, Yu X. A Physic Nut Stress-Responsive HD-Zip Transcription Factor, JcHDZ07, Confers Enhanced Sensitivity to Salinity Stress in Transgenic Arabidopsis. FRONTIERS IN PLANT SCIENCE 2019; 10:942. [PMID: 31379913 PMCID: PMC6652468 DOI: 10.3389/fpls.2019.00942] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 07/05/2019] [Indexed: 05/30/2023]
Abstract
Homeodomain-leucine zipper (HD-Zip) transcription factors are reported to play crucial roles in the growth, development, and stress responses of plants. However, there is little knowledge of the molecular mechanisms involved in physic nut's stress tolerance generally, or the functions of its HD-Zip genes. In the present study, a HD-Zip family transcription factor, designated JcHDZ07, was isolated from physic nut. Expression profile analysis showed that salinity stress inhibited the expression of JcHDZ07. Transient expression of JcHDZ07-YFP in Arabidopsis protoplast cells revealed that JcHDZ07 was a nuclear-localized protein. Additionally, no obvious difference in growth and development between wild-type and JcHDZ07-overexpressing plants was observed in the absence of stress. Our results further indicated that JcHDZ07 overexpressing transgenic plants had lower proline contents, lower survival rates, and activities of catalase and superoxide dismutase, but higher relative electrical leakage and malonaldehyde contents compared with wild-type plants under salinity stress conditions, suggesting that overexpression of JcHDZ07 confers enhanced sensitivity to salinity stress in transgenic Arabidopsis. Expression of salt stress-responsive genes were upregulated in leaves of transgenic plants under salinity stress, but less strongly than in wild-type plants. Collectively, our results suggest that JcHDZ07 functions as an important regulator during the process of plant responses to salinity stress.
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Affiliation(s)
- Yuehui Tang
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, China
- Henan Key Laboratory of Crop Molecular Breeding and Bioreactor, Zhoukou Normal University, Zhoukou, China
| | - Xinxin Bao
- School of Journalism and Communication, Zhoukou Normal University, Zhoukou, China
| | - Shuang Wang
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, China
| | - Yan Liu
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, China
| | - Jie Tan
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, China
| | - Mengxia Yang
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, China
| | - Mengyuan Zhang
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, China
| | - Rongrong Dai
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, China
| | - Xinrong Yu
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, China
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Zhu Y, Li Y, Zhang S, Zhang X, Yao J, Luo Q, Sun F, Wang X. Genome-wide identification and expression analysis reveal the potential function of ethylene responsive factor gene family in response to Botrytis cinerea infection and ovule development in grapes (Vitis vinifera L.). PLANT BIOLOGY (STUTTGART, GERMANY) 2019; 21:571-584. [PMID: 30468551 DOI: 10.1111/plb.12943] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 11/16/2018] [Indexed: 05/02/2023]
Abstract
The prevention of Botrytis cinerea infection and the study of grape seedlessness are very important for grape industries. Finding correlated regulatory genes is an important approach towards understanding their molecular mechanisms. Ethylene responsive factor (ERF) gene family play critical roles in defence networks and the growth of plants. To date, no large-scale study of the ERF proteins associated with pathogen defence and ovule development has been performed in grape (Vitis vinifera L.). In the present study, we identified 113 ERF genes (VvERF) and named them based on their chromosome locations. The ERF genes could be divided into 11 groups based on a multiple sequence alignment and a phylogenetic comparison with homologues from Arabidopsis thaliana. Synteny analysis and Ka/Ks ratio calculation suggested that segmental and tandem duplications contributed to the expansion of the ERF gene family. The evolutionary relationships between the VvERF genes were investigated by exon-intron structure characterisation, and an analysis of the cis-acting regulatory elements in their promoters suggested potential regulation after stress or hormone treatments. Expression profiling after infection with the fungus, B. cinerea, indicated that ERF genes function in responses to pathogen attack. In addition, the expression levels of most ERF genes were much higher during ovule development in seedless grapes, suggesting a role in ovule abortion related to seedlessness. Taken together, these results indicate that VvERF proteins are involved in responses to Botrytis cinerea infection and in grape ovule development. This information may help guide strategies to improve grape production.
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Affiliation(s)
- Y Zhu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Shaanxi, Yangling, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Shaanxi, Yangling, China
| | - Y Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Shaanxi, Yangling, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Shaanxi, Yangling, China
| | - S Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Shaanxi, Yangling, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Shaanxi, Yangling, China
| | - X Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Shaanxi, Yangling, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Shaanxi, Yangling, China
| | - J Yao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Shaanxi, Yangling, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Shaanxi, Yangling, China
| | - Q Luo
- Research Institute of Grapes and Melon in Xinjiang Uygur Autonomous Region, Shanshan, Xinjiang, China
| | - F Sun
- Research Institute of Grapes and Melon in Xinjiang Uygur Autonomous Region, Shanshan, Xinjiang, China
| | - X Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Shaanxi, Yangling, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Shaanxi, Yangling, China
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Song W, Qi N, Liang C, Duan F, Zhao H. Soybean root transcriptome profiling reveals a nonhost resistant response during Heterodera glycines infection. PLoS One 2019; 14:e0217130. [PMID: 31125369 PMCID: PMC6534303 DOI: 10.1371/journal.pone.0217130] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 05/06/2019] [Indexed: 11/19/2022] Open
Abstract
Heterodera glycines (soybean cyst nematode, SCN) is one of the most devastating pathogens of soybean worldwide. The compatible and in compatible interactions between soybean and SCN have well documented. Nevertheless, the molecular mechanism of a nonhost resistant response in soybean against SCN infection remains obscure. Toward this end, a global transcriptional comparison was conducted between susceptible and resistant reactions of soybean roots infected by taking advantage of finding a new pathotype of SCN (SCNT). The soybean cultivar Lee, which exhibits resistant to SCNT and susceptible to HG 1.2.3.4.7 (SCNs) was utilized in the expriments. The results highlighted a nonhost resistant response of soybean. Transcriptome analysis indicated that the number of differentially expressed genes (DEGs) in the resistant interaction (3746) was much larger than that in the susceptible interaction (602). A great number of genes acting as intrinsic component of membrane, integral component of membrane, cell periphery and plasma membrance were remarkably enriched only in the resistant interaction, while the taurine and hypotaurine, phenylpropanoid pathway, plant-pathogen interaction and transcript factors were modulated in both interactions. This is the first study to examine genes expression patterns in a soybean genotype in response to invasion by a virulent and avirulent SCN population at the transcriptional level, which will provide insights into the complicate molecular mechanism of the nonhost resistant interaction.
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Affiliation(s)
- Wenwen Song
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Nawei Qi
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Chen Liang
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Fangmeng Duan
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Honghai Zhao
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
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Tang Y, Bao X, Zhi Y, Wu Q, Guo Y, Yin X, Zeng L, Li J, Zhang J, He W, Liu W, Wang Q, Jia C, Li Z, Liu K. Overexpression of a MYB Family Gene, OsMYB6, Increases Drought and Salinity Stress Tolerance in Transgenic Rice. FRONTIERS IN PLANT SCIENCE 2019; 10:168. [PMID: 30833955 PMCID: PMC6387972 DOI: 10.3389/fpls.2019.00168] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 01/31/2019] [Indexed: 05/20/2023]
Abstract
MYB transcription factors have been demonstrated to play key regulatory roles in plant growth, development and abiotic stress response. However, knowledge concerning the involvement of rice MYB genes in salinity and drought stress resistance are largely unknown. In the present study, we cloned and characterized the OsMYB6 gene, which was induced by drought and salinity stress. Subcellular localization of OsMYB6-YFP fusion protein in protoplast cells indicated that OsMYB6 was localized in the nucleus. Overexpression of OsMYB6 in rice did not suggest a negative effect on the growth and development of transgenic plants, but OsMYB6-overexpressing plants showed increased tolerance to drought and salt stress compared with wild-type plants, as are evaluated by higher proline content, higher CAT and SOD activities, lower REL and MDA content in transgenic plants under drought and salt stress conditions. In addition, the expression of abiotic stress-responsive genes were significantly higher in OsMYB6 transgenic plants than that in wild-type plants under drought and salt stress conditions. These results indicate that OsMYB6 gene functions as a stress-responsive transcription factor which plays a positive regulatory role in response to drought and salt stress resistance, and may be used as a candidate gene for molecular breeding of salt-tolerant and drought-tolerant crop varieties.
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Affiliation(s)
- Yuehui Tang
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, China
- Henan Key Laboratory of Crop Molecular Breeding and Bioreactor, Zhoukou, China
| | - Xinxin Bao
- School of Journalism and Communication, Zhoukou Normal University, Zhoukou, China
| | - Yuling Zhi
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Qian Wu
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Yaru Guo
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Xuhui Yin
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Liqin Zeng
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Jia Li
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Jing Zhang
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Wenlong He
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Weihao Liu
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Qingwei Wang
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Chengkai Jia
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Zhengkang Li
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Kun Liu
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Zhoukou, China
- Henan Key Laboratory of Crop Molecular Breeding and Bioreactor, Zhoukou, China
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Chen Y, Wu P, Zhao Q, Tang Y, Chen Y, Li M, Jiang H, Wu G. Overexpression of a Phosphate Starvation Response AP2/ERF Gene From Physic Nut in Arabidopsis Alters Root Morphological Traits and Phosphate Starvation-Induced Anthocyanin Accumulation. FRONTIERS IN PLANT SCIENCE 2018; 9:1186. [PMID: 30177937 PMCID: PMC6109760 DOI: 10.3389/fpls.2018.01186] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 07/24/2018] [Indexed: 05/02/2023]
Abstract
Physic nut (Jatropha curcas L.) is highly tolerant of barren environments and a significant biofuel plant. To probe mechanisms of its tolerance mechanisms, we have analyzed genome-wide transcriptional profiles of 8-week-old physic nut seedlings subjected to Pi deficiency (P-) for 2 and 16 days, and Pi-sufficient conditions (P+) controls. We identified several phosphate transporters, purple acid phosphatases, and enzymes of membrane lipid metabolism among the 272 most differentially expressed genes. Genes of the miR399/PHO2 pathway (IPS, miR399, and members of the SPX family) showed alterations in expression. We also found that expression of several transcription factor genes was modulated by phosphate starvation stress in physic nut seedlings, including an AP2/ERF gene (JcERF035), which was down-regulated in both root and leaf tissues under Pi-deprivation. In JcERF035-overexpressing Arabidopsis lines both numbers and lengths of first-order lateral roots were dramatically reduced, but numbers of root hairs on the primary root tip were significantly elevated, under both P+ and P- conditions. Furthermore, the transgenic plants accumulated less anthocyanin but had similar Pi contents to wild-type plants under P-deficiency conditions. Expression levels of the tested genes related to anthocyanin biosynthesis and regulation, and genes induced by low phosphate, were significantly lower in shoots of transgenic lines than in wild-type plants under P-deficiency. Our data show that down-regulation of the JcERF035 gene might contribute to the regulation of root system architecture and both biosynthesis and accumulation of anthocyanins in aerial tissues of plants under low Pi conditions.
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Affiliation(s)
- Yanbo Chen
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Pingzhi Wu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Qianqian Zhao
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yuehui Tang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yaping Chen
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Meiru Li
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Huawu Jiang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Guojiang Wu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
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36
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Tang Y, Bao X, Liu K, Wang J, Zhang J, Feng Y, Wang Y, Lin L, Feng J, Li C. Genome-wide identification and expression profiling of the auxin response factor (ARF) gene family in physic nut. PLoS One 2018; 13:e0201024. [PMID: 30067784 PMCID: PMC6070241 DOI: 10.1371/journal.pone.0201024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 07/06/2018] [Indexed: 12/20/2022] Open
Abstract
Auxin response factors (ARF) are important transcription factors which mediate the transcription of auxin responsive genes by binding directly to auxin response elements (AuxREs) found in the promoter regions of these genes. To date, no information has been available about the genome-wide organization of the ARF transcription factor family in physic nut. In this study, 17 ARF genes (JcARFs) are identified in the physic nut genome. A detailed investigation into the physic nut ARF gene family is performed, including analysis of the exon-intron structure, conserved domains, conserved motifs, phylogeny, chromosomal locations, potential small RNA targets and expression profiles under various conditions. Phylogenetic analysis suggests that the 17 JcARF proteins are clustered into 6 groups, and most JcARF proteins from the physic nut reveal closer relationships with those from Arabidopsis than those from rice. Of the 17 JcARF genes, eight are predicted to be the potential targets of small RNAs; most of the genes show differential patterns of expression among four tissues (root, stem cortex, leaf, and seed); and qRT-PCR indicates that the expression of all JcARF genes is inhibited or induced in response to exogenous auxin. Expression profile analysis based on RNA-seq data shows that in leaves, 11 of the JcARF genes respond to at least one abiotic stressor (drought and/or salinity) at, as a minimum, at least one time point. Our results provide valuable information for further studies on the roles of JcARF genes in regulating physic nut's growth, development and responses to abiotic stress.
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Affiliation(s)
- Yuehui Tang
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Henan, Zhoukou, China
- Henan Key Laboratory of Crop Molecular Breeding and Bioreactor, Henan, Zhoukou, China
| | - Xinxin Bao
- School of Journalism and Communication, Zhoukou Normal University, Henan, Zhoukou, China
| | - Kun Liu
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Henan, Zhoukou, China
- Henan Key Laboratory of Crop Molecular Breeding and Bioreactor, Henan, Zhoukou, China
| | - Jian Wang
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Henan, Zhoukou, China
- Henan Key Laboratory of Crop Molecular Breeding and Bioreactor, Henan, Zhoukou, China
| | - Ju Zhang
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Henan, Zhoukou, China
- Henan Key Laboratory of Crop Molecular Breeding and Bioreactor, Henan, Zhoukou, China
| | - Youwei Feng
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Henan, Zhoukou, China
| | - Yangyang Wang
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Henan, Zhoukou, China
| | - Luoxiao Lin
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Henan, Zhoukou, China
| | - Jingcheng Feng
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Henan, Zhoukou, China
| | - Chengwei Li
- Key Laboratory of Plant Genetics and Molecular Breeding, Zhoukou Normal University, Henan, Zhoukou, China
- Henan Key Laboratory of Crop Molecular Breeding and Bioreactor, Henan, Zhoukou, China
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Liu H, Zhou Y, Li H, Wang T, Zhang J, Ouyang B, Ye Z. Molecular and functional characterization of ShNAC1, an NAC transcription factor from Solanum habrochaites. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 271:9-19. [PMID: 29650161 DOI: 10.1016/j.plantsci.2018.03.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 03/02/2018] [Accepted: 03/03/2018] [Indexed: 05/23/2023]
Abstract
NAC transcription factors (TFs) are important regulators of plant adaptation to abiotic stress. In this study, we functionally characterized an NAC TF, ShNAC1, from Solanum habrochaites. ShNAC1 was up-regulated by drought, cold, and salt stresses, and it displayed lower expression at the late stage of stress treatments than its orthologous gene in S. lycopersicum. Overexpression of ShNAC1 in tomato resulted in reduced cold, drought, and salt tolerance. Additionally, ShNAC1 displayed the highest expression in senescent leaf, and overexpressing ShNAC1 accelerated salt- and dark-induced leaf senescence. ShNAC1 was located in the nucleus without transactivation activity. RNA-seq analysis revealed that 81% (190 out of 234) differentially-expressed genes (DEGs) showed down-regulation in the transgenic line L2 compared with wild-type, suggesting that ShNAC1 may function as a transcriptional repressor. Among these down-regulated DEGs, many were involved in stress responses, such as SlHKT1;1, SlMAPKKK59, SlJA2, SlTIL, SlALDH2B1, etc. Noticeably, one ACS gene and three ACO genes involved in ethylene biosynthesis were up-regulated, while seven ERF genes in the ethylene signal transduction pathway were down-regulated in the transgenic lines, respectively. Our results suggested that ShNAC1 negatively regulates tolerance to abiotic stress in tomato probably by modulating the ethylene biosynthesis and signal transduction pathways.
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Affiliation(s)
- Hui Liu
- Key Laboratory of Biology and Genetic Resources of Rubber Tree, Ministry of Agriculture, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China
| | - Yuhong Zhou
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Hanxia Li
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Taotao Wang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Junhong Zhang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Bo Ouyang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China.
| | - Zhibiao Ye
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China.
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Shu K, Zhou W, Yang W. APETALA 2-domain-containing transcription factors: focusing on abscisic acid and gibberellins antagonism. THE NEW PHYTOLOGIST 2018; 217:977-983. [PMID: 29058311 DOI: 10.1111/nph.14880] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The phytohormones abscisic acid (ABA) and gibberellin (GA) antagonistically mediate diverse plant developmental processes including seed dormancy and germination, root development, and flowering time control, and thus the optimal balance between ABA and GA is essential for plant growth and development. Although more than a half and one century have passed since the initial discoveries of ABA and GA, respectively, the precise mechanisms underlying ABA-GA antagonism still need further investigation. Emerging evidence indicates that two APETALA 2 (AP2)-domain-containing transcription factors (ATFs), ABI4 in Arabidopsis and OsAP2-39 in rice, play key roles in ABA and GA antagonism. These two transcription factors precisely regulate the transcription pattern of ABA and GA biosynthesis or inactivation genes, mediating ABA and GA levels. In this Viewpoint article, we try to shed light on the effects of ATFs on ABA-GA antagonism, and summarize the overlapping but distinct biological functions of these ATFs in the antagonism between ABA and GA. Finally, we strongly propose that further research is needed into the detailed roles of additional numerous ATFs in ABA and GA crosstalk, which will improve our understanding of the antagonism between these two phytohormones.
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Affiliation(s)
- Kai Shu
- Department of Plant Physiology and Biotechnology, Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wenguan Zhou
- Department of Plant Physiology and Biotechnology, Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wenyu Yang
- Department of Plant Physiology and Biotechnology, Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, 611130, China
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