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Zhang F, Zhang X, Wan W, Zhu X, Shi M, Zhang L, Yang F, Jin S. MYB4 in Lilium pumilum affects plant saline-alkaline tolerance. PLANT SIGNALING & BEHAVIOR 2024; 19:2370724. [PMID: 39004439 PMCID: PMC11249031 DOI: 10.1080/15592324.2024.2370724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 05/18/2024] [Accepted: 05/21/2024] [Indexed: 07/16/2024]
Abstract
Lilium pumilum DC (L. pumilum DC) plays an important role in the rational utilization of salinized soil. To explore the molecular mechanism of salt-tolerant L. pumilum, the LpMYB4 was cloned. LpMYB4 close relationship with Bambusa emeiensis and Zea mays MYB4 throughout the phylogenetic tree construction. LpMYB4 protein was found to be localized in the nucleus. Prokaryotic and eukaryotic bacterial solution resistance experiments proved that the exogenous introduction of LpMYB4 made the overexpression strains obtain better survival ability under saline-alkaline stress. Compared with wild-type plants, tobacco plants overexpressing LpMYB4 had better growth and lower leaf wilting and lodging, the content of chlorophyll was higher, the content of hydrogen peroxide and superoxide anion was lower, the activity of peroxidase and superoxide dismutase was higher and the relative conductivity was lower under saline-alkaline stress. The analysis of seed germination and seedling resistance of transgenic plants under salt stress showed that LpMYB4 transgenic seeds were more tolerant to salt stress during germination and growth. Yeast two-hybrid and two-luciferase complementation experiments showed that LpMYB4 interacted with yeast two-hybrid and LpGPX6. The analysis of the role of LpMYB4 in improving plant saline-alkali resistance is helpful to the transformation of plant germplasm resources and has great significance for agriculture and sustainable development.
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Affiliation(s)
- Fanru Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Xiaochao Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Wenhao Wan
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Xingyu Zhu
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Miaoxin Shi
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Ling Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Fengshan Yang
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & Key Laboratory of Molecular Biology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin, China
| | - Shumei Jin
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
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Zhang H, Wu Y, Zhang H, Sun N, Zhang H, Tian B, Zhang T, Wang K, Nan X, Zhang H. AtMYB72 aggravates photosynthetic inhibition and oxidative damage in Arabidopsis thaliana leaves caused by salt stress. PLANT SIGNALING & BEHAVIOR 2024; 19:2371694. [PMID: 38916149 PMCID: PMC11204036 DOI: 10.1080/15592324.2024.2371694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 05/24/2024] [Indexed: 06/26/2024]
Abstract
MYB transcription factor is one of the largest families in plants. There are more and more studies on plants responding to abiotic stress through MYB transcription factors, but the mechanism of some family members responding to salt stress is unclear. In this study, physiological and transcriptome techniques were used to analyze the effects of the R2R3-MYB transcription factor AtMYB72 on the growth and development, physiological function, and key gene response of Arabidopsis thaliana. Phenotypic observation showed that the damage of overexpression strain was more serious than that of Col-0 after salt treatment, while the mutant strain showed less salt injury symptoms. Under salt stress, the decrease of chlorophyll content, the degree of photoinhibition of photosystem II (PSII) and photosystem I (PSI) and the degree of oxidative damage of overexpressed lines were significantly higher than those of Col-0. Transcriptome data showed that the number of differentially expressed genes (DEGs) induced by salt stress in overexpressed lines was significantly higher than that in Col-0. GO enrichment analysis showed that the response of AtMYB72 to salt stress was mainly by affecting gene expression in cell wall ectoplast, photosystem I and photosystem II, and other biological processes related to photosynthesis. Compared with Col-0, the overexpression of AtMYB72 under salt stress further inhibited the synthesis of chlorophyll a (Chla) and down-regulated most of the genes related to photosynthesis, which made the photosynthetic system more sensitive to salt stress. AtMYB72 also caused the outbreak of reactive oxygen species and the accumulation of malondialdehyde under salt stress, which decreased the activity and gene expression of key enzymes in SOD, POD, and AsA-GSH cycle, thus destroying the ability of antioxidant system to maintain redox balance. AtMYB72 negatively regulates the accumulation of osmotic regulatory substances such as soluble sugar (SS) and soluble protein (SP) in A. thaliana leaves under salt stress, which enhances the sensitivity of Arabidopsis leaves to salt. To sum up, MYB72 negatively regulates the salt tolerance of A. thaliana by destroying the light energy capture, electron transport, and antioxidant capacity of Arabidopsis.
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Affiliation(s)
- Hongrui Zhang
- College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Yinuo Wu
- Aulin College, Northeast Forestry University, Harbin, China
| | - Hongbo Zhang
- College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Nan Sun
- College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Hongjiao Zhang
- College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Bei Tian
- College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Tanhang Zhang
- College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Kexin Wang
- College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Xu Nan
- Key Laboratory of Heilongjiang Province for Cold-Regions Wetlands Ecology and Environment Research, Harbin University, School of Geography and Tourism, Harbin, China
| | - Huiui Zhang
- College of Life Sciences, Northeast Forestry University, Harbin, China
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Zhang H, Yao T, Wang J, Ji G, Cui C, Song J, Sun N, Qi S, Xu N, Zhang H. Genome-wide identification of R2R3-MYB transcription factors in Betula platyphylla and functional analysis of BpMYB95 in salt tolerance. Int J Biol Macromol 2024; 279:135193. [PMID: 39216584 DOI: 10.1016/j.ijbiomac.2024.135193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 08/26/2024] [Accepted: 08/28/2024] [Indexed: 09/04/2024]
Abstract
The Myeloblastosis (MYB) transcription factor (TF) family is one of the largest transcription factor families in plants and plays an important role in various physiological processes. At present, there are few reports on birch (Betula platyphylla Suk.) of R2R3-MYB-TFs, and most BpMYBs still need to be characterized. In this study, 111 R2R3-MYB-TFs with conserved R2 and R3 MYB domains were identified. Phylogenetic tree analysis showed that the MYB family members of Arabidopsis thaliana and birch were divided into 23 and 21 subgroups, respectively. The latter exhibited an uneven distribution across 14 chromosomes. There were five tandem duplication events and 17 segmental duplication events between BpMYBs, and repeat events play an important role in the expansion of the family. In addition, the promoter region of MYBs was rich in various cis-acting elements, and MYB-TFs were involved in plant growth and development, light responses, biotic stress, and abiotic stress. RNA-sequencing (RNA-seq) and quantitative Real-Time Polymerase Chain Reaction (qRT-PCR) results revealed that most R2R3-MYB-TFs in birch responded to salt stress. In particular, the expression of BpMYBs in the S20 subfamily was significantly induced by salt, drought, abscisic acid, and methyl jasmonate stresses. Based on the weighted co-expression network analysis of physiological and RNA-seq data of birch under salt stress, a key MYB-TF BpMYB95 (BPChr12G24087), was identified in response to salt stress, and its expression level was induced by salt stress. BpMYB95 is a nuclear localization protein with transcriptional activation activity in yeast and overexpression of this gene significantly enhanced salt tolerance in Saccharomyces cerevisiae. The qRT-PCR and histochemical staining results showed that BpMYB95 exhibited the highest expression in the roots, young leaves, and petioles of birch plants. Overexpression of BpMYB95 significantly improved salt-induced browning and wilting symptoms in birch leaves and alleviated the degree of PSII photoinhibition caused by salt stress in birch seedlings. In conclusion, most R2R3-MYB-TFs found in birch were involved in the salt stress response mechanisms. Among these, BpMYB95 was a key regulatory factor that significantly enhanced salt tolerance in birch. The findings of this study provide valuable genetic resources for the development of salt-tolerant birch varieties.
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Affiliation(s)
- Hongbo Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Tongtong Yao
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Jiechen Wang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Guangxin Ji
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Congcong Cui
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Jiaqi Song
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Nan Sun
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Siyue Qi
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Nan Xu
- Harbin Univ, Sch Geog & Tourism, Key Lab Heilongjiang Prov Cold Reg Wetlands Ecol &, Harbin, China.
| | - Huiui Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China.
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Yan B, Zhang L, Jiao K, Wang Z, Yong K, Lu M. Vesicle formation-related protein CaSec16 and its ankyrin protein partner CaANK2B jointly enhance salt tolerance in pepper. JOURNAL OF PLANT PHYSIOLOGY 2024; 296:154240. [PMID: 38603993 DOI: 10.1016/j.jplph.2024.154240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/13/2024]
Abstract
Vesicle transport plays important roles in plant tolerance against abiotic stresses. However, the contribution of a vesicle formation related protein CaSec16 (COPII coat assembly protein Sec16-like) in pepper tolerance to salt stress remains unclear. In this study, we report that the expression of CaSec16 was upregulated by salt stress. Compared to the control, the salt tolerance of pepper with CaSec16-silenced was compromised, which was shown by the corresponding phenotypes and physiological indexes, such as the death of growing point, the aggravated leaf wilting, the higher increment of relative electric leakage (REL), the lower content of total chlorophyll, the higher accumulation of dead cells, H2O2, malonaldehyde (MDA), and proline (Pro), and the inhibited induction of marker genes for salt-tolerance and vesicle transport. In contrast, the salt tolerance of pepper was enhanced by the transient overexpression of CaSec16. In addition, heterogeneously induced CaSec16 protein did not enhance the salt tolerance of Escherichia coli, an organism lacking the vesicle transport system. By yeast two-hybrid method, an ankyrin protein, CaANK2B, was identified as the interacting protein of CaSec16. The expression of CaANK2B showed a downward trend during the process of salt stress. Compared with the control, pepper plants with transient-overexpression of CaANK2B displayed increased salt tolerance, whereas those with CaANK2B-silenced exhibited reduced salt tolerance. Taken together, both the vesicle formation related protein CaSec16 and its interaction partner CaANK2B can improve the pepper tolerance to salt stress.
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Affiliation(s)
- Bentao Yan
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Linyang Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Kexin Jiao
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhenze Wang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Kang Yong
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Minghui Lu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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Sharma M, Tisarum R, Kohli RK, Batish DR, Cha-Um S, Singh HP. Inroads into saline-alkaline stress response in plants: unravelling morphological, physiological, biochemical, and molecular mechanisms. PLANTA 2024; 259:130. [PMID: 38647733 DOI: 10.1007/s00425-024-04368-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 02/22/2024] [Indexed: 04/25/2024]
Abstract
MAIN CONCLUSION This article discusses the complex network of ion transporters, genes, microRNAs, and transcription factors that regulate crop tolerance to saline-alkaline stress. The framework aids scientists produce stress-tolerant crops for smart agriculture. Salinity and alkalinity are frequently coexisting abiotic limitations that have emerged as archetypal mediators of low yield in many semi-arid and arid regions throughout the world. Saline-alkaline stress, which occurs in an environment with high concentrations of salts and a high pH, negatively impacts plant metabolism to a greater extent than either stress alone. Of late, saline stress has been the focus of the majority of investigations, and saline-alkaline mixed studies are largely lacking. Therefore, a thorough understanding and integration of how plants and crops rewire metabolic pathways to repair damage caused by saline-alkaline stress is of particular interest. This review discusses the multitude of resistance mechanisms that plants develop to cope with saline-alkaline stress, including morphological and physiological adaptations as well as molecular regulation. We examine the role of various ion transporters, transcription factors (TFs), differentially expressed genes (DEGs), microRNAs (miRNAs), or quantitative trait loci (QTLs) activated under saline-alkaline stress in achieving opportunistic modes of growth, development, and survival. The review provides a background for understanding the transport of micronutrients, specifically iron (Fe), in conditions of iron deficiency produced by high pH. Additionally, it discusses the role of calcium in enhancing stress tolerance. The review highlights that to encourage biomolecular architects to reconsider molecular responses as auxiliary for developing tolerant crops and raising crop production, it is essential to (a) close the major gaps in our understanding of saline-alkaline resistance genes, (b) identify and take into account crop-specific responses, and (c) target stress-tolerant genes to specific crops.
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Affiliation(s)
- Mansi Sharma
- Department of Environment Studies, Panjab University, Chandigarh, 160 014, India
- Department of Environmental Sciences, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida, 201310, Uttar Pradesh, India
| | - Rujira Tisarum
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand
| | - Ravinder Kumar Kohli
- Department of Botany, Panjab University, Chandigarh, 160014, India
- Amity University, Mohali Campus, Sector 82A, Mohali, 140306, Punjab, India
| | - Daizy R Batish
- Department of Botany, Panjab University, Chandigarh, 160014, India
| | - Suriyan Cha-Um
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand
| | - Harminder Pal Singh
- Department of Environment Studies, Panjab University, Chandigarh, 160 014, India.
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Hualpa-Ramirez E, Carrasco-Lozano EC, Madrid-Espinoza J, Tejos R, Ruiz-Lara S, Stange C, Norambuena L. Stress salinity in plants: New strategies to cope with in the foreseeable scenario. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 208:108507. [PMID: 38467083 DOI: 10.1016/j.plaphy.2024.108507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 02/12/2024] [Accepted: 03/04/2024] [Indexed: 03/13/2024]
Abstract
The excess of salts in soils causes stress in most plants, except for some halophytes that can tolerate higher levels of salinity. The excess of Na+ generates an ionic imbalance, reducing the K+ content and altering cellular metabolism, thus impacting in plant growth and development. Additionally, salinity in soil induces water stress due to osmotic effects and increments the production of reactive oxygen species (ROS) that affect the cellular structure, damaging membranes and proteins, and altering the electrochemical potential of H+, which directly affects nutrient absorption by membrane transporters. However, plants possess mechanisms to overcome the toxicity of the sodium ions, such as internalization into the vacuole or exclusion from the cell, synthesis of enzymes or protective compounds against ROS, and the synthesis of metabolites that help to regulate the osmotic potential of plants. Physiologic and molecular mechanisms of salinity tolerance in plants will be addressed in this review. Furthermore, a revision of strategies taken by researchers to confer salt stress tolerance on agriculturally important species are discussed. These strategies include conventional breeding and genetic engineering as transgenesis and genome editing by CRISPR/Cas9.
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Affiliation(s)
- Efrain Hualpa-Ramirez
- Plant Molecular Biology Centre, Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | | | | | - Ricardo Tejos
- Plant Molecular Biology Centre, Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | - Simón Ruiz-Lara
- Instituto de Ciencias Biológicas. Universidad de Talca, Talca, Chile
| | - Claudia Stange
- Plant Molecular Biology Centre, Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | - Lorena Norambuena
- Plant Molecular Biology Centre, Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile.
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Fang L, Liu T, Li M, Dong X, Han Y, Xu C, Li S, Zhang J, He X, Zhou Q, Luo D, Liu Z. MODMS: a multi-omics database for facilitating biological studies on alfalfa ( Medicago sativa L.). HORTICULTURE RESEARCH 2024; 11:uhad245. [PMID: 38239810 PMCID: PMC10794946 DOI: 10.1093/hr/uhad245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/13/2023] [Indexed: 01/22/2024]
Abstract
Alfalfa (Medicago sativa L.) is a globally important forage crop. It also serves as a vegetable and medicinal herb because of its excellent nutritional quality and significant economic value. Multi-omics data on alfalfa continue to accumulate owing to recent advances in high-throughput techniques, and integrating this information holds great potential for expediting genetic research and facilitating advances in alfalfa agronomic traits. Therefore, we developed a comprehensive database named MODMS (multi-omics database of M. sativa) that incorporates multiple reference genomes, annotations, comparative genomics, transcriptomes, high-quality genomic variants, proteomics, and metabolomics. This report describes our continuously evolving database, which provides researchers with several convenient tools and extensive omics data resources, facilitating the expansion of alfalfa research. Further details regarding the MODMS database are available at https://modms.lzu.edu.cn/.
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Affiliation(s)
- Longfa Fang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Tao Liu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Mingyu Li
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - XueMing Dong
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Yuling Han
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Congzhuo Xu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Siqi Li
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Jia Zhang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Xiaojuan He
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Qiang Zhou
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Dong Luo
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Zhipeng Liu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
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Wang X, Tang H, Lu T, Shen P, Chen J, Dong W, Song Y. Novel underlying regulatory mechanism of the MsDAD2-mediated salt stress response in alfalfa. Biochem Biophys Res Commun 2024; 690:149252. [PMID: 37995452 DOI: 10.1016/j.bbrc.2023.149252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 11/13/2023] [Indexed: 11/25/2023]
Abstract
Alfalfa (Medicago sativa L.), a crucial and widely grown forage legume, faces yield and quality challenges due to salinity stress. The defender against apoptotic death (DAD) gene, recognized initially as an apoptosis suppressor in mammals, plays a pivotal role in catalyzing N-glycosylation, acting as a positive regulator for protein folding and endoplasmic reticulum (ER) export. Here, we found that the MsDAD2 gene was specially induced in the salt-tolerant alfalfa cultivar (DL) under salinity stress, but not in the salt-sensitive cultivar (SD). Overexpression of MsDAD2 enhanced the salinity resistance of transgenic alfalfa by promoting NAD(P)H-quinone oxidoreductase (NQO1) and cytochrome b6f complex subunit (Cyt b6/f) expression, thereby mitigating reactive oxygen species (ROS) production. ChIP-qPCR analysis suggested that the differential expression of MsDAD2 in DL and SD under salinity stress may be linked to dynamic histone modifications in its promoter. Therefore, our findings elucidate a novel regulatory mechanism of MsDAD2 in alfalfa's response to salinity stress, underscoring its significance as a target for alfalfa breeding to enhance salt tolerance.
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Affiliation(s)
- Xiaoyan Wang
- School of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, PR China
| | - Haoyan Tang
- School of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, PR China
| | - Tongchen Lu
- School of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, PR China
| | - Peihan Shen
- School of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, PR China
| | - Jifeng Chen
- School of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, PR China
| | - Wei Dong
- School of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, PR China
| | - Yuguang Song
- School of Life Sciences, Qufu Normal University, Qufu, 273165, Shandong, PR China.
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Bouzroud S, Henkrar F, Fahr M, Smouni A. Salt stress responses and alleviation strategies in legumes: a review of the current knowledge. 3 Biotech 2023; 13:287. [PMID: 37520340 PMCID: PMC10382465 DOI: 10.1007/s13205-023-03643-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 05/21/2023] [Indexed: 08/01/2023] Open
Abstract
Salinity is one of the most significant environmental factors limiting legumes development and productivity. Salt stress disturbs all developmental stages of legumes and affects their hormonal regulation, photosynthesis and biological nitrogen fixation, causing nutritional imbalance, plant growth inhibition and yield losses. At the molecular level, salt stress exposure involves large number of factors that are implicated in stress perception, transduction, and regulation of salt responsive genes' expression through the intervention of transcription factors. Along with the complex gene network, epigenetic regulation mediated by non-coding RNAs, and DNA methylation events are also involved in legumes' response to salinity. Different alleviation strategies can increase salt tolerance in legume plants. The most promising ones are Plant Growth Promoting Rhizobia, Arbuscular Mycorrhizal Fungi, seed and plant's priming. Genetic manipulation offers an effective approach for improving salt tolerance. In this review, we present a detailed overview of the adverse effect of salt stress on legumes and their molecular responses. We also provide an overview of various ameliorative strategies that have been implemented to mitigate/overcome the harmful effects of salt stress on legumes.
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Affiliation(s)
- Sarah Bouzroud
- Equipe de Microbiologie et Biologie Moléculaire, Centre de Biotechnologie Végétale et Microbienne Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Morocco
| | - Fatima Henkrar
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de Biotechnologie Végétale et Microbienne Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Morocco
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5R/INAU, 10000 Rabat, Morocco
| | - Mouna Fahr
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de Biotechnologie Végétale et Microbienne Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Morocco
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5R/INAU, 10000 Rabat, Morocco
| | - Abdelaziz Smouni
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de Biotechnologie Végétale et Microbienne Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Morocco
- Laboratoire Mixte International Activité Minière Responsable “LMI-AMIR”, IRD/UM5R/INAU, 10000 Rabat, Morocco
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10
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Singer SD, Lehmann M, Zhang Z, Subedi U, Burton Hughes K, Lim NZL, Ortega Polo R, Chen G, Acharya S, Hannoufa A, Huan T. Elucidation of Physiological, Transcriptomic and Metabolomic Salinity Response Mechanisms in Medicago sativa. PLANTS (BASEL, SWITZERLAND) 2023; 12:2059. [PMID: 37653976 PMCID: PMC10221938 DOI: 10.3390/plants12102059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/15/2023] [Accepted: 05/19/2023] [Indexed: 09/02/2023]
Abstract
Alfalfa (Medicago sativa L.) is a widely grown perennial leguminous forage crop with a number of positive attributes. However, despite its moderate ability to tolerate saline soils, which are increasing in prevalence worldwide, it suffers considerable yield declines under these growth conditions. While a general framework of the cascade of events involved in plant salinity response has been unraveled in recent years, many gaps remain in our understanding of the precise molecular mechanisms involved in this process, particularly in non-model yet economically important species such as alfalfa. Therefore, as a means of further elucidating salinity response mechanisms in this species, we carried out in-depth physiological assessments of M. sativa cv. Beaver, as well as transcriptomic and untargeted metabolomic evaluations of leaf tissues, following extended exposure to salinity (grown for 3-4 weeks under saline treatment) and control conditions. In addition to the substantial growth and photosynthetic reductions observed under salinity treatment, we identified 1233 significant differentially expressed genes between growth conditions, as well as 60 annotated differentially accumulated metabolites. Taken together, our results suggest that changes to cell membranes and walls, cuticular and/or epicuticular waxes, osmoprotectant levels, antioxidant-related metabolic pathways, and the expression of genes encoding ion transporters, protective proteins, and transcription factors are likely involved in alfalfa's salinity response process. Although some of these alterations may contribute to alfalfa's modest salinity resilience, it is feasible that several may be disadvantageous in this context and could therefore provide valuable targets for the further improvement of tolerance to this stress in the future.
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Affiliation(s)
- Stacy D. Singer
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
| | - Madeline Lehmann
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Zixuan Zhang
- Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Udaya Subedi
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Kimberley Burton Hughes
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
| | - Nathaniel Z.-L. Lim
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
| | - Rodrigo Ortega Polo
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
| | - Guanqun Chen
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Surya Acharya
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
| | - Abdelali Hannoufa
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON N5V 4T3, Canada
| | - Tao Huan
- Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
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11
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Wan W, Liu Q, Zhang C, Li K, Sun Z, Li Y, Li H. Alfalfa growth and nitrogen fixation constraints in salt-affected soils are in part offset by increased nitrogen supply. FRONTIERS IN PLANT SCIENCE 2023; 14:1126017. [PMID: 36895871 PMCID: PMC9989181 DOI: 10.3389/fpls.2023.1126017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION In China, alfalfa (Medicago sativa L.) is often grown on marginal land with poor soil fertility and suboptimal climate conditions. Soil salt stress is one of the most limiting factors for alfalfa yield and quality, through its inhibition of nitrogen (N) uptake and N fixation. METHODS To understand if N supply could improve alfalfa yield and quality through increasing N uptake in salt-affected soils, a hydroponic experiment and a soil experiment were conducted. Alfalfa growth and N fixation were evaluated in response to different salt levels and N supply levels. RESULTS AND DISCUSSION The results showed that salt stress not only significantly decreased alfalfa biomass, by 43%-86%, and N content, by 58%-91%, but also reduced N fixation ability and N derived from the atmosphere (%Ndfa) through the inhibition of nodule formation and N fixation efficiency when the salt level was above 100 mmol Na2SO4 L-1. Salt stress also decreased alfalfa crude protein by 31%-37%. However, N supply significantly improved shoot dry weight by 40%-45%, root dry weight by 23%-29%, and shoot N content by 10%-28% for alfalfa grown in salt-affected soil. The N supply was also beneficial for the %Ndfa and N fixation for alfalfa with salt stress, and the increase reached 47% and 60%, respectively. Nitrogen supply offset the negative effects on alfalfa growth and N fixation caused by salt stress, in part through improving plant N nutrition status. Our results suggest that optimal N fertilizer application is essential to alleviate the loss of growth and N fixation in alfalfa in salt-affected soils.
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12
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Kumar P, Singh J, Kaur G, Adunola PM, Biswas A, Bazzer S, Kaur H, Kaur I, Kaur H, Sandhu KS, Vemula S, Kaur B, Singh V, Tseng TM. OMICS in Fodder Crops: Applications, Challenges, and Prospects. Curr Issues Mol Biol 2022; 44:5440-5473. [PMID: 36354681 PMCID: PMC9688858 DOI: 10.3390/cimb44110369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/27/2022] [Accepted: 10/31/2022] [Indexed: 09/08/2024] Open
Abstract
Biomass yield and quality are the primary targets in forage crop improvement programs worldwide. Low-quality fodder reduces the quality of dairy products and affects cattle's health. In multipurpose crops, such as maize, sorghum, cowpea, alfalfa, and oat, a plethora of morphological and biochemical/nutritional quality studies have been conducted. However, the overall growth in fodder quality improvement is not on par with cereals or major food crops. The use of advanced technologies, such as multi-omics, has increased crop improvement programs manyfold. Traits such as stay-green, the number of tillers per plant, total biomass, and tolerance to biotic and/or abiotic stresses can be targeted in fodder crop improvement programs. Omic technologies, namely genomics, transcriptomics, proteomics, metabolomics, and phenomics, provide an efficient way to develop better cultivars. There is an abundance of scope for fodder quality improvement by improving the forage nutrition quality, edible quality, and digestibility. The present review includes a brief description of the established omics technologies for five major fodder crops, i.e., sorghum, cowpea, maize, oats, and alfalfa. Additionally, current improvements and future perspectives have been highlighted.
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Affiliation(s)
- Pawan Kumar
- Agrotechnology Division, Council of Scientific and Industrial Research-Institute of Himalayan Bioresource Technology, Palampur 176061, India
- Department of Genetics and Plant Breeding, CCS Haryana Agricultural University, Hisar 125004, India
| | - Jagmohan Singh
- Division of Plant Pathology, Indian Agricultural Research Institute, New Delhi 110012, India
- Krishi Vigyan Kendra, Guru Angad Dev Veterinary and Animal Science University, Barnala 148107, India
| | - Gurleen Kaur
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| | | | - Anju Biswas
- Agronomy Department, University of Florida, Gainesville, FL 32611, USA
| | - Sumandeep Bazzer
- Department of Agronomy, Horticulture, and Plant Science, South Dakota State University, Brookings, WA 57007, USA
| | - Harpreet Kaur
- Department of Plant and Environmental Sciences, New Mexico State University, Las Cruces, NM 88001, USA
| | - Ishveen Kaur
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | - Harpreet Kaur
- Department of Agricultural and Environmental Sciences, Tennessee State University, Nashville, TN 37209, USA
| | - Karansher Singh Sandhu
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99163, USA
| | - Shailaja Vemula
- Agronomy Department, UF/IFAS Research and Education Center, Belle Glade, FL 33430, USA
| | - Balwinder Kaur
- Department of Entomology, UF/IFAS Research and Education Center, Belle Glade, FL 33430, USA
| | - Varsha Singh
- Department of Plant and Soil Sciences, Mississippi State University, Starkville, MS 39759, USA
| | - Te Ming Tseng
- Department of Plant and Soil Sciences, Mississippi State University, Starkville, MS 39759, USA
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Wang N, Lin Y, Qi F, Xiaoyang C, Peng Z, Yu Y, Liu Y, Zhang J, Qi X, Deyholos M, Zhang J. Comprehensive Analysis of Differentially Expressed Genes and Epigenetic Modification-Related Expression Variation Induced by Saline Stress at Seedling Stage in Fiber and Oil Flax, Linum usitatissimum L. PLANTS (BASEL, SWITZERLAND) 2022; 11:2053. [PMID: 35956530 PMCID: PMC9370232 DOI: 10.3390/plants11152053] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 07/23/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
The ability of different germplasm to adapt to a saline-alkali environment is critical to learning about the tolerance mechanism of saline-alkali stress in plants. Flax is an important oil and fiber crop in many countries. However, its molecular tolerance mechanism under saline stress is still not clear. In this study, we studied morphological, physiological characteristics, and gene expression variation in the root and leaf in oil and fiber flax types under saline stress, respectively. Abundant differentially expressed genes (DEGs) induced by saline stress, tissue/organ specificity, and different genotypes involved in plant hormones synthesis and metabolism and transcription factors and epigenetic modifications were detected. The present report provides useful information about the mechanism of flax response to saline stress and could lead to the future elucidation of the specific functions of these genes and help to breed suitable flax varieties for saline/alkaline soil conditions.
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Affiliation(s)
- Ningning Wang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 131018, China
| | - Yujie Lin
- Faculty of Agronomy, Jilin Agricultural University, Changchun 131018, China
| | - Fan Qi
- Faculty of Agronomy, Jilin Agricultural University, Changchun 131018, China
| | - Chunxiao Xiaoyang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 131018, China
| | - Zhanwu Peng
- Information Center, Jilin Agricultural University, Changchun 130000, China
| | - Ying Yu
- School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Yingnan Liu
- Institute of Natural Resource and Ecology, Heilongjiang Academy of Science, Harbin 150040, China
| | - Jun Zhang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 131018, China
| | - Xin Qi
- Faculty of Agronomy, Jilin Agricultural University, Changchun 131018, China
| | - Michael Deyholos
- Department of Biology, University of British Columbia Okanagan, Kelowna, BC V1V 1V7, Canada
| | - Jian Zhang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 131018, China
- Department of Biology, University of British Columbia Okanagan, Kelowna, BC V1V 1V7, Canada
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14
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Luo Y, Ma L, Du W, Yan S, Wang Z, Pang Y. Identification and Characterization of Salt- and Drought-Responsive AQP Family Genes in Medicagosativa L. Int J Mol Sci 2022; 23:ijms23063342. [PMID: 35328763 PMCID: PMC8950044 DOI: 10.3390/ijms23063342] [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: 02/07/2022] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 02/05/2023] Open
Abstract
Aquaporins (AQP) are distributed ubiquitously in plants, and they play important roles in multiple aspects of plant growth and development, as well as in plant resistance to various environmental stresses. In this study, 43 MsAQP genes were identified in the forage crop Medicago sativa. All the MsAQP proteins were clustered into four subfamilies based on sequence similarity and phylogenetic relationship, including 17 TIPs, 14 NIPs, 9 PIPs and 3 SIPs. Analyses of gene structure and conserved domains indicated that the majority of the deduced MsAQP proteins contained the signature transmembrane domains and the NPA motifs. Analyses on cis-acting elements in the promoter region of MsAQP genes revealed the presence of multiple and diverse stress-responsive and hormone-responsive cis-acting elements. In addition, by analyzing the available and comprehensive gene expression data of M. truncatula, we screened ten representative MtAQP genes that were responsive to NaCl or drought stress. By analyzing the sequence similarity and phylogenetic relationship, we finally identified the corresponding ten salt- or drought-responsive AQP genes in M. sativa, including three MsTIPs, three MsPIPs and four MsNIPs. The qPCRs showed that the relative expression levels of these ten selected MsAQP genes responded differently to NaCl or drought treatment in M. sativa. Gene expression patterns showed that most MsAQP genes were preferentially expressed in roots or in leaves, which may reflect their tissue-specific functions associated with development. Our results lay an important foundation for the future characterization of the functions of MsAQP genes, and provide candidate genes for stress resistance improvement through genetic breeding in M. sativa.
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Affiliation(s)
- Yijing Luo
- College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China; (Y.L.); (S.Y.)
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100093, China; (L.M.); (W.D.)
| | - Lin Ma
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100093, China; (L.M.); (W.D.)
| | - Wenxuan Du
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100093, China; (L.M.); (W.D.)
| | - Su Yan
- College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China; (Y.L.); (S.Y.)
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100093, China; (L.M.); (W.D.)
| | - Zengyu Wang
- College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China; (Y.L.); (S.Y.)
- Correspondence: (Z.W.); (Y.P.)
| | - Yongzhen Pang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100093, China; (L.M.); (W.D.)
- Correspondence: (Z.W.); (Y.P.)
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15
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Zeeshan M, Qiu CW, Naz S, Cao F, Wu F. Genome-Wide Discovery of miRNAs with Differential Expression Patterns in Responses to Salinity in the Two Contrasting Wheat Cultivars. Int J Mol Sci 2021; 22:ijms222212556. [PMID: 34830438 PMCID: PMC8621374 DOI: 10.3390/ijms222212556] [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: 10/19/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 01/16/2023] Open
Abstract
Salinity is a serious environmental issue. It has a substantial effect on crop yield, as many crop species are sensitive to salinity due to climate change, and it impact is continuing to increase. Plant microRNAs (miRNAs) contribute to salinity stress response in bread wheat. However, the underlying molecular mechanisms by which miRNAs confer salt tolerance in wheat are unclear. We conducted a genome-wide discovery study using Illumina high throughput sequencing and comprehensive in silico analysis to obtain insight into the underlying mechanisms by which small RNAs confer tolerance to salinity in roots of two contrasting wheat cvv., namely Suntop (salt-tolerant) and Sunmate (salt-sensitive). A total of 191 microRNAs were identified in both cultivars, consisting of 110 known miRNAs and 81 novel miRNAs; 181 miRNAs were shared between the two cultivars. The known miRNAs belonged to 35 families consisted of 23 conserved and 12 unique families. Salinity stress induced 43 and 75 miRNAs in Suntop and Sunmate, respectively. Among them, 14 and 29 known and novel miRNAs were expressed in Suntop and 37 and 38 in Sunmate. In silico analysis revealed 861 putative target mRNAs for the 75 known miRNAs and 52 putative target mRNAs for the 15 candidate novel miRNAs. Furthermore, seven miRNAs including tae-miR156, tae-miR160, tae-miR171a-b, tae-miR319, tae-miR159a-b, tae-miR9657 and novel-mir59 that regulate auxin responsive-factor, SPL, SCL6, PCF5, R2R3 MYB, and CBL-CIPK, respectively, were predicted to contribute to salt tolerance in Suntop. This information helps further our understanding of how the molecular mechanisms of salt tolerance are mediated by miRNAs and may facilitate the genetic improvement of wheat cultivars.
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Affiliation(s)
- Muhammad Zeeshan
- Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China; (M.Z.); (C.-W.Q.); (S.N.); (F.C.)
- Key Laboratory of Crop Cultivation and Tillage, Agricultural College of Guangxi University, Nanning 530004, China
| | - Cheng-Wei Qiu
- Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China; (M.Z.); (C.-W.Q.); (S.N.); (F.C.)
| | - Shama Naz
- Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China; (M.Z.); (C.-W.Q.); (S.N.); (F.C.)
| | - Fangbin Cao
- Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China; (M.Z.); (C.-W.Q.); (S.N.); (F.C.)
| | - Feibo Wu
- Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China; (M.Z.); (C.-W.Q.); (S.N.); (F.C.)
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
- Correspondence: ; Tel./Fax: +86-571-8898-2827
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16
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Medina CA, Samac DA, Yu LX. Pan-transcriptome identifying master genes and regulation network in response to drought and salt stresses in Alfalfa (Medicago sativa L.). Sci Rep 2021; 11:17203. [PMID: 34446782 PMCID: PMC8390513 DOI: 10.1038/s41598-021-96712-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 08/10/2021] [Indexed: 02/07/2023] Open
Abstract
Alfalfa is an important legume forage grown worldwide and its productivity is affected by environmental stresses such as drought and high salinity. In this work, three alfalfa germplasms with contrasting tolerances to drought and high salinity were used for unraveling the transcriptomic responses to drought and salt stresses. Twenty-one different RNA samples from different germplasm, stress conditions or tissue sources (leaf, stem and root) were extracted and sequenced using the PacBio (Iso-Seq) and the Illumina platforms to obtain full-length transcriptomic profiles. A total of 1,124,275 and 91,378 unique isoforms and genes were obtained, respectively. Comparative analysis of transcriptomes identified differentially expressed genes and isoforms as well as transcriptional and post-transcriptional modifications such as alternative splicing events, fusion genes and nonsense-mediated mRNA decay events and non-coding RNA such as circRNA and lncRNA. This is the first time to identify the diversity of circRNA and lncRNA in response to drought and high salinity in alfalfa. The analysis of weighted gene co-expression network allowed to identify master genes and isoforms that may play important roles on drought and salt stress tolerance in alfalfa. This work provides insight for understanding the mechanisms by which drought and salt stresses affect alfalfa growth at the whole genome level.
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Affiliation(s)
- Cesar Augusto Medina
- United States Department of Agriculture-Agricultural Research Service, Plant Germplasm Introduction and Testing Research, Prosser, WA, 99350, USA
| | - Deborah A Samac
- United States Department of Agriculture-Agricultural Research Service, Plant Science Research Unit, 1991 Upper Buford Circle, 495 Borlaug Hall St, Paul, MN, 55108, USA
| | - Long-Xi Yu
- United States Department of Agriculture-Agricultural Research Service, Plant Germplasm Introduction and Testing Research, Prosser, WA, 99350, USA.
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17
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Fasani E, DalCorso G, Furini A. MYB59 transcription factor behaves differently in metallicolous and non-metallicolous populations of Arabidopsis halleri. FUNCTIONAL PLANT BIOLOGY : FPB 2021; 48:916-923. [PMID: 33972014 DOI: 10.1071/fp20356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
In Arabidopsis thaliana (L.) Heynh., MYB59 transcription factor participates in regulating Ca homeostasis and signal transduction and is induced by Cd excess. To investigate its role in the facultative metallophyte Arabidopsis halleri ssp. halleri (L.) O'Kane and Al-Shehbaz, MYB59 expression was investigated under Cd treatment or Ca depletion in three populations belonging to distinct phylogeographic units (metallicolous PL22 and I16 and non-metallicolous I29), and compared with the expression in A. thaliana. In control conditions, MYB59 transcription in A. thaliana and the non-metallicolous population I29 follow a comparable trend with higher expression in roots than shoots, whereas in metallicolous populations I16 and PL22 its expression is similar in roots and shoots, suggesting a convergent evolution associated with adaptation to metalliferous environments. After 6 h of Ca depletion, MYB59 transcript levels were very high in I16 and PL22 populations, indicating that the adaptation to metalliferous environments requires tightly regulated Ca homeostasis and signalling. Cd treatment caused variability in MYB59 expression. In I29, MYB59 expression, as in A. thaliana, is likely associated to stress response, whereas its modulation in the two metallicolous populations reflects the different strategies for Cd tolerance and accumulation. In conclusion, MYB59 regulation in A. halleri is part of the network linking mineral nutrition and Cd tolerance/accumulation.
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Affiliation(s)
- Elisa Fasani
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Giovanni DalCorso
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Antonella Furini
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; and Corresponding author.
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18
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Fang S, Hou X, Liang X. Response Mechanisms of Plants Under Saline-Alkali Stress. FRONTIERS IN PLANT SCIENCE 2021; 12:667458. [PMID: 34149764 PMCID: PMC8213028 DOI: 10.3389/fpls.2021.667458] [Citation(s) in RCA: 111] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 05/10/2021] [Indexed: 05/20/2023]
Abstract
As two coexisting abiotic stresses, salt stress and alkali stress have severely restricted the development of global agriculture. Clarifying the plant resistance mechanism and determining how to improve plant tolerance to salt stress and alkali stress have been popular research topics. At present, most related studies have focused mainly on salt stress, and salt-alkali mixed stress studies are relatively scarce. However, in nature, high concentrations of salt and high pH often occur simultaneously, and their synergistic effects can be more harmful to plant growth and development than the effects of either stress alone. Therefore, it is of great practical importance for the sustainable development of agriculture to study plant resistance mechanisms under saline-alkali mixed stress, screen new saline-alkali stress tolerance genes, and explore new plant salt-alkali tolerance strategies. Herein, we summarized how plants actively respond to saline-alkali stress through morphological adaptation, physiological adaptation and molecular regulation.
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Affiliation(s)
- Shumei Fang
- Department of Biotechnology, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, China
- *Correspondence: Shumei Fang,
| | - Xue Hou
- Department of Biotechnology, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Xilong Liang
- Department of Environmental Science, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, China
- Heilongjiang Plant Growth Regulator Engineering Technology Research Center, Daqing, China
- Xilong Liang,
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19
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Nemchinov LG, Grinstead S. Identification of a Novel Isolate of Alfalfa virus S from China Suggests a Possible Role of Seed Contamination in the Distribution of the Virus. PLANT DISEASE 2020; 104:3115-3117. [PMID: 33058717 DOI: 10.1094/pdis-04-20-0906-sc] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recently, alfalfa virus S (AVS), a new species in the family Alphaflexiviridae, was identified in alfalfa samples originating from Sudan, northern Africa. Here, we report on the identification and complete genomic sequence of an AVS isolate found in 7-day-old seedlings grown from alfalfa seeds acquired from China. The Chinese isolate of AVS differed in its nucleotide sequence from the Sudanese isolate by 8.6%. The detection of AVS in alfalfa seedlings developed from the germinated seeds may indicate a potential role of seed transmission in the distribution of this virus. The results obtained suggest that AVS may be far more widespread than previously thought.
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Affiliation(s)
- Lev G Nemchinov
- USDA/ARS, Beltsville Agricultural Research Center, Molecular Plant Pathology Laboratory, Beltsville, MD 20705
| | - Samuel Grinstead
- USDA/ARS, Beltsville Agricultural Research Center, National Germplasm Resources Laboratory, Beltsville, MD 20705
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20
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Dong W, Gao T, Wang Q, Chen J, Lv J, Song Y. Salinity stress induces epigenetic alterations to the promoter of MsMYB4 encoding a salt-induced MYB transcription factor. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 155:709-715. [PMID: 32862020 DOI: 10.1016/j.plaphy.2020.08.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 06/11/2023]
Abstract
The transcriptomic response of plants to salinity stress is regulated in part by epigenetic alterations to gene promoter sequences. The transcription factor MsMYB4 is an important component of the response of alfalfa to salinity stress, but the involvement of epialleles of its encoding gene has not as yet been explored. Here, the MsMYB4 promoter was isolated using a genome walking approach in order to perform a deletion analysis to identify the region harboring the elements required for its stress inducibility. The analysis showed that these reside in the sequence lying between 739 and 336 nt up stream of the MsMYB4 translation start codon. The methylation status of the sequence around the MsMYB4 translation start site was altered by the imposition of salinity stress. The activation of MsMYB4 was associated with an increased level of histone H3K4 trimethylation and H3K9 acetylation in specific regions of the promoter sequence. Our results suggest a critical role for MsMYB4's activation by DNA methylation and/or histone modifications in response to salinity stress in alfalfa.
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Affiliation(s)
- Wei Dong
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Tianxue Gao
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Qi Wang
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Jifeng Chen
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Jiao Lv
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Yuguang Song
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China.
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21
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Bejerman N, Roumagnac P, Nemchinov LG. High-Throughput Sequencing for Deciphering the Virome of Alfalfa ( Medicago sativa L.). Front Microbiol 2020; 11:553109. [PMID: 33042059 PMCID: PMC7518122 DOI: 10.3389/fmicb.2020.553109] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 08/12/2020] [Indexed: 12/22/2022] Open
Abstract
Alfalfa (Medicago sativa L.), also known as lucerne, is a major forage crop worldwide. In the United States, it has recently become the third most valuable field crop, with an estimated value of over $9.3 billion. Alfalfa is naturally infected by many different pathogens, including viruses, obligate parasites that reproduce only inside living host cells. Traditionally, viral infections of alfalfa have been considered by breeders, growers, producers and researchers to be diseases of limited importance, although they are widespread in all major cultivation areas. However, over the past few years, due to the rapid development of high-throughput sequencing (HTS), viral metagenomics, bioinformatics tools for interpreting massive amounts of HTS data and the increasing accessibility of public data repositories for transcriptomic discoveries, several emerging viruses of alfalfa with the potential to cause serious yield losses have been described. They include alfalfa leaf curl virus (family Geminiviridae), alfalfa dwarf virus (family Rhabdoviridae), alfalfa enamovirus 1 (family Luteoviridae), alfalfa virus S (family Alphaflexiviridae) and others. These discoveries have called into question the assumed low economic impact of viral diseases in alfalfa and further suggested their possible contribution to the severity of complex infections involving multiple pathogens. In this review, we will focus on viruses of alfalfa recently described in different laboratories on the basis of the above research methodologies.
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Affiliation(s)
| | - Philippe Roumagnac
- CIRAD, BGPI, Montpellier, France.,BGPI, INRAE, CIRAD, Institut Agro, Université Montpellier, Montpellier, France
| | - Lev G Nemchinov
- Molecular Plant Pathology Laboratory, USDA-ARS-BARC, Beltsville, MD, United States
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22
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De novo transcriptome assembly and analysis of Phragmites karka, an invasive halophyte, to study the mechanism of salinity stress tolerance. Sci Rep 2020; 10:5192. [PMID: 32251358 PMCID: PMC7089983 DOI: 10.1038/s41598-020-61857-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 02/27/2020] [Indexed: 01/04/2023] Open
Abstract
With the rapidly deteriorating environmental conditions, the development of stress tolerant plants has become a priority for sustaining agricultural productivity. Therefore, studying the process of stress tolerance in naturally tolerant species hold significant promise. Phragmites karka is an invasive plant species found abundantly in tropical and sub tropical regions, fresh water regions and brackish marshy areas, such as river banks and lake shores. The plant possesses the ability to adapt and survive under conditions of high salinity. We subjected P. karka seedlings to salt stress and carried out whole transcriptome profiling of leaf and root tissues. Assessing the global transcriptome changes under salt stress resulted in the identification of several genes that are differentially regulated under stress conditions in root and leaf tissue. A total of 161,403 unigenes were assembled and used as a reference for digital gene expression analysis. A number of key metabolic pathways were found to be over-represented. Digital gene expression analysis was validated using qRT-PCR. In addition, a number of different transcription factor families including WRKY, MYB, CCCH, NAC etc. were differentially expressed under salinity stress. Our data will facilitate further characterisation of genes involved in salinity stress tolerance in P. karka. The DEGs from our results are potential candidates for understanding and engineering abiotic stress tolerance in plants.
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23
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Zhang M, Hong LZ, Gu MF, Wu CD, Zhang G. Transcriptome analyses revealed molecular responses of Cynanchum auriculatum leaves to saline stress. Sci Rep 2020; 10:449. [PMID: 31949203 PMCID: PMC6965089 DOI: 10.1038/s41598-019-57219-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 12/24/2019] [Indexed: 11/25/2022] Open
Abstract
Cynanchum auriculatum is a traditional herbal medicine in China and can grow in saline soils. However, little is known in relation to the underlying molecular mechanisms. In the present study, C. auriculatum seedlings were exposed to 3.75‰ and 7.5‰ salinity. Next, transcriptome profiles of leaves were compared. Transcriptome sequencing showed 35,593 and 58,046 differentially expressed genes (DEGs) in treatments with 3.75‰ and 7.5‰, compared with the control, respectively. Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses of these DEGs enriched various defense-related biological pathways, including ROS scavenging, ion transportation, lipid metabolism and plant hormone signaling. Further analyses suggested that C. auriculatum up-regulated Na+/H+ exchanger and V-type proton ATPase to avoid accumulation of Na+. The flavonoid and phenylpropanoids biosynthesis pathways were activated, which might increase antioxidant capacity in response to saline stress. The auxin and ethylene signaling pathways were upregulated in response to saline treatments, both of which are important plant hormones. Overall, these results raised new insights to further investigate molecular mechanisms underlying resistance of C. auriculatum to saline stress.
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Affiliation(s)
- Ming Zhang
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Province, 224045, P.R. China
| | - Li-Zhou Hong
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Province, 224045, P.R. China
| | - Min-Feng Gu
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Province, 224045, P.R. China
| | - Cheng-Dong Wu
- Xinyang Agricultural Experiment Station of Yancheng City, Jiangsu Province, 224045, P.R. China.
| | - Gen Zhang
- Shenzhen GenProMetab Biotechnology Company Limited., Shenzhen, Guangdong Province, 51800, P.R. China.
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24
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Jiang P, Shao J, Nemchinov LG. Identification of emerging viral genomes in transcriptomic datasets of alfalfa (Medicago sativa L.). Virol J 2019; 16:153. [PMID: 31818304 PMCID: PMC6902351 DOI: 10.1186/s12985-019-1257-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 11/22/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Publicly available transcriptomic datasets have become a valuable tool for the discovery of new pathogens, particularly viruses. In this study, several coding-complete viral genomes previously not found or experimentally confirmed in alfalfa were identified in the plant datasets retrieved from the NCBI Sequence Read Archive. METHODS Publicly available Medicago spp. transcriptomic datasets were retrieved from the NCBI SRA database. The raw reads were first mapped to the reference genomes of Medicago sativa and Medigago truncatula followed by the alignment of the unmapped reads to the NCBI viral genome database and de novo assembly using the SPAdes tool. When possible, assemblies were experimentally confirmed using 5'/3' RACE and RT-PCRs. RESULTS Twenty three different viruses were identified in the analyzed datasets, of which several represented emerging viruses not reported in alfalfa prior to this study. Among them were two strains of cnidium vein yellowing virus, lychnis mottle virus and Cactus virus X, for which coding-complete genomic sequences were obtained by a de novo assembly. CONCLUSIONS The results improve our knowledge of the diversity and host range of viruses infecting alfalfa, provide essential tools for their diagnostics and characterization and demonstrate the utility of transcriptomic datasets for the discovery of new pathogens.
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Affiliation(s)
- Peng Jiang
- USDA/ARS, Beltsville Agricultural Research Center, Molecular Plant Pathology Laboratory, Beltsville, MD, 20705, USA
| | - Jonathan Shao
- USDA/ARS, Beltsville Agricultural Research Center, Molecular Plant Pathology Laboratory, Beltsville, MD, 20705, USA
| | - Lev G Nemchinov
- USDA/ARS, Beltsville Agricultural Research Center, Molecular Plant Pathology Laboratory, Beltsville, MD, 20705, USA.
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Dong W, Liu X, Lv J, Gao T, Song Y. The expression of alfalfa MsPP2CA1 gene confers ABA sensitivity and abiotic stress tolerance on Arabidopsis thaliana. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 143:176-182. [PMID: 31513951 DOI: 10.1016/j.plaphy.2019.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
Although clade A phosphatase 2Cs (PP2CAs) are well known to regulate abscisic acid (ABA) signaling, few members of this family have been identified in alfalfa so far. Here, the isolation and characterization of the gene MsPP2CA1 from alfalfa is described. Its transcription was found to be highly inducible by treatment with abscisic acid, salt, hydrogen peroxide and polyethylene glycol. The constitutive expression of MsPP2CA1 in Arabidopsis thaliana seedlings mitigates root growth imposed by either salinity or oxidative stress, while also raising the level of sensitivity to ABA during germination and early seedling development, and promoting stomatal closure. In transgenic plants, many ABA-dependent stress-responsive genes were activated, and the expressions of catalase and peroxidase which involved in reactive oxygen scavenging were promoted. MsPP2CA1 is suggested as a candidate for the genetic manipulation of salinity tolerance in legume species.
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Affiliation(s)
- Wei Dong
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Xijiang Liu
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Jiao Lv
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Tianxue Gao
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Yuguang Song
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China.
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26
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Identification of the Coding-Complete Genome of Cycas Necrotic Stunt Virus in Transcriptomic Data Sets of Alfalfa ( Medicago sativa). Microbiol Resour Announc 2019; 8:8/38/e00981-19. [PMID: 31537674 PMCID: PMC6753278 DOI: 10.1128/mra.00981-19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
We present evidence here that alfalfa (Medicago sativa L.) can be a natural host species for a new strain of Cycas necrotic stunt virus (CNSV), for which the name CNSV-A (alfalfa) is proposed. Prior to this report, the virus has not been identified in alfalfa. We present evidence here that alfalfa (Medicago sativa L.) can be a natural host species for a new strain of Cycas necrotic stunt virus (CNSV), for which the name CNSV-A (alfalfa) is proposed. Prior to this report, the virus has not been identified in alfalfa.
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27
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Zhou Q, Jia C, Ma W, Cui Y, Jin X, Luo D, Min X, Liu Z. MYB transcription factors in alfalfa ( Medicago sativa): genome-wide identification and expression analysis under abiotic stresses. PeerJ 2019; 7:e7714. [PMID: 31576246 PMCID: PMC6753925 DOI: 10.7717/peerj.7714] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 08/21/2019] [Indexed: 12/13/2022] Open
Abstract
Background Alfalfa is the most widely cultivated forage legume and one of the most economically valuable crops in the world. Its survival and production are often hampered by environmental changes. However, there are few studies on stress-resistance genes in alfalfa because of its incomplete genomic information and rare expression profile data. The MYB proteins are characterized by a highly conserved DNA-binding domain, which is large, functionally diverse, and represented in all eukaryotes. The role of MYB proteins in plant development is essential; they function in diverse biological processes, including stress and defense responses, and seed and floral development. Studies on the MYB gene family have been reported in several species, but they have not been comprehensively analyzed in alfalfa. Methods To identify more comprehensive MYB transcription factor family genes, the sequences of 168 Arabidopsis thaliana, 430 Glycine max, 185 Medicago truncatula, and 130 Oryza sativa MYB proteins were downloaded from the Plant Transcription Factor Database. These sequences were used as queries in a BLAST search against the M. sativa proteome sequences provided by the Noble Research Institute. Results In the present study, a total of 265 MsMYB proteins were obtained, including 50 R1-MYB, 186 R2R3-MYB, 26 R1R2R3-MYB, and three atypical-MYB proteins. These predicted MsMYB proteins were divided into 12 subgroups by phylogenetic analysis, and gene ontology (GO) analysis indicated that most of the MsMYB genes are involved in various biological processes. The expression profiles and quantitative real-time PCR analysis indicated that some MsMYB genes might play a crucial role in the response to abiotic stresses. Additionally, a total of 170 and 914 predicted protein–protein and protein-DNA interactions were obtained, respectively. The interactions between MsMYB043 and MSAD320162, MsMYB253 and MSAD320162, and MsMYB253 and MSAD308489 were confirmed by a yeast two-hybrid system. This work provides information on the MYB family in alfalfa that was previously lacking and might promote the cultivation of stress-resistant alfalfa.
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Affiliation(s)
- Qiang Zhou
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Chenglin Jia
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Wenxue Ma
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Yue Cui
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Xiaoyu Jin
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Dong Luo
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Xueyang Min
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Zhipeng Liu
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
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28
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Song Y, Lv J, Qiu N, Bai Y, Yang N, Dong W. The constitutive expression of alfalfa MsMYB2L enhances salinity and drought tolerance of Arabidopsis thaliana. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 141:300-305. [PMID: 31202194 DOI: 10.1016/j.plaphy.2019.06.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 05/10/2019] [Accepted: 06/07/2019] [Indexed: 06/09/2023]
Abstract
MYB-type transcription factors are known to participate in the response of plants to a number of stress agents. MsMYB2L is an alfalfa member of this large gene family. Its transcription in alfalfa seedlings was found to be rapidly and strongly induced by salinity, moisture deficiency and exogenously supplied abscisic acid. An analysis based on a yeast one hybrid assay indicated that its product is able to activate transcription, consistent with its function as a transcription factor. When the gene was constitutively expressed in Arabidopsis thaliana, both germination and seedling growth were more sensitive to ABA treatment than wild type, and growth was less strongly compromised by salinity and moisture deficiency stress, presumably as a result of the induction of certain stress-related genes active in ABA-dependent pathways. The transgenic seedlings' enhanced the synthesis of many osmotic regulatory substances such as proline and soluble sugar, and decreased the lipid peroxidation. In all, MsMYB2L represents a potential candidate gene for manipulating the salinity and drought tolerance of alfalfa.
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Affiliation(s)
- Yuguang Song
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Jiao Lv
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Nianwei Qiu
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China; Shandong Provincial Key Laboratory of Plant Stress, Shandong Normal University, Jinan 250014, China
| | - Yunting Bai
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Ning Yang
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Wei Dong
- School of Life Science, Qufu Normal University, Qufu, Shandong, 273165, PR China.
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