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Tang H, Yuan C, Shi H, Liu F, Shan S, Wang Z, Sun Q, Sun J. Genome-Wide Identification of Peanut B-Boxs and Functional Characterization of AhBBX6 in Salt and Drought Stresses. PLANTS (BASEL, SWITZERLAND) 2024; 13:955. [PMID: 38611484 PMCID: PMC11013918 DOI: 10.3390/plants13070955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 03/19/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024]
Abstract
The B-box (BBX) gene family includes zinc finger protein transcription factors that regulate a multitude of physiological and developmental processes in plants. While BBX gene families have been previously determined in various plants, the members and roles of peanut BBXs are largely unknown. In this research, on the basis of the genome-wide identification of BBXs in three peanut species (Arachis hypogaea, A. duranensis, and A. ipaensis), we investigated the expression profile of the BBXs in various tissues and in response to salt and drought stresses and selected AhBBX6 for functional characterization. We identified a total of 77 BBXs in peanuts, which could be grouped into five subfamilies, with the genes from the same branch of the same subgroup having comparable exon-intron structures. In addition, a significant number of cis-regulatory elements involved in the regulation of responses to light and hormones and abiotic stresses were found in the promoter region of peanut BBXs. Based on the analysis of transcriptome data and qRT-PCR, we identified AhBBX6, AhBBX11, AhBBX13, and AhBBX38 as potential genes associated with tolerance to salt and drought. Silencing AhBBX6 using virus-induced gene silencing compromised the tolerance of peanut plants to salt and drought stresses. The results of this study provide knowledge on peanut BBXs and establish a foundation for future research into their functional roles in peanut development and stress response.
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Affiliation(s)
- Haohong Tang
- Key Laboratory of Oasis Eco-Agriculture, College of Agriculture, Shihezi University, Shihezi 832000, China; (H.T.); (H.S.); (F.L.)
| | - Cuiling Yuan
- Shandong Peanut Research Institute, Qingdao 266100, China; (C.Y.); (S.S.)
| | - Haonan Shi
- Key Laboratory of Oasis Eco-Agriculture, College of Agriculture, Shihezi University, Shihezi 832000, China; (H.T.); (H.S.); (F.L.)
| | - Feng Liu
- Key Laboratory of Oasis Eco-Agriculture, College of Agriculture, Shihezi University, Shihezi 832000, China; (H.T.); (H.S.); (F.L.)
| | - Shihua Shan
- Shandong Peanut Research Institute, Qingdao 266100, China; (C.Y.); (S.S.)
| | - Zhijun Wang
- Biotechnology Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi 832000, China;
| | - Quanxi Sun
- Shandong Peanut Research Institute, Qingdao 266100, China; (C.Y.); (S.S.)
| | - Jie Sun
- Key Laboratory of Oasis Eco-Agriculture, College of Agriculture, Shihezi University, Shihezi 832000, China; (H.T.); (H.S.); (F.L.)
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Li G, Guo X, Sun Y, Gangurde SS, Zhang K, Weng F, Wang G, Zhang H, Li A, Wang X, Zhao C. Physiological and biochemical mechanisms underlying the role of anthocyanin in acquired tolerance to salt stress in peanut ( Arachis hypogaea L.). FRONTIERS IN PLANT SCIENCE 2024; 15:1368260. [PMID: 38529061 PMCID: PMC10961369 DOI: 10.3389/fpls.2024.1368260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 02/26/2024] [Indexed: 03/27/2024]
Abstract
Anthocyanin is an important pigment that prevents oxidative stress and mediates adaptation of plants to salt stress. Peanuts with dark red and black testa are rich in anthocyanin. However, correlation between salt tolerance and anthocyanin content in black and dark red testa peanuts is unknown. In this study, three peanut cultivars namely YZ9102 (pink testa), JHR1 (red testa) and JHB1 (black testa) were subjected to sodium chloride (NaCl) stress. The plant growth, ion uptake, anthocyanin accumulation, oxidation resistance and photosynthetic traits were comparatively analyzed. We observed that the plant height, leaf area and biomass under salt stress was highly inhibited in pink color testa (YZ9102) as compare to black color testa (JHB1). JHB1, a black testa colored peanut was identified as the most salt-tolerance cultivar, followed by red (JHR1) and pink(YZ9102). During salt stress, JHB1 exhibited significantly higher levels of anthocyanin and flavonoid accumulation compared to JHR1 and YZ9102, along with increased relative activities of antioxidant protection and photosynthetic efficiency. However, the K+/Na+ and Ca2+/Na+ were consistently decreased among three cultivars under salt stress, suggesting that the salt tolerance of black testa peanut may not be related to ion absorption. Therefore, we predicted that salt tolerance of JHB1 may be attributed to the accumulation of the anthocyanin and flavonoids, which activated antioxidant protection against the oxidative damage to maintain the higher photosynthetic efficiency and plant growth. These findings will be useful for improving salt tolerance of peanuts.
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Affiliation(s)
- Guanghui Li
- Shandong International Joint Laboratory of Agricultural Germplasm Resources Innovation, Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xin Guo
- Shandong International Joint Laboratory of Agricultural Germplasm Resources Innovation, Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Academy of Agricultural Sciences, Jinan, China
| | - Yanbin Sun
- Shandong International Joint Laboratory of Agricultural Germplasm Resources Innovation, Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Academy of Agricultural Sciences, Jinan, China
| | - Sunil S. Gangurde
- Center of Excellence in Genomics & Systems Biology (CEGSB), International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Kun Zhang
- College of Agronomy, Shandong Agricultural University, Taian, China
| | - Fubin Weng
- Shandong International Joint Laboratory of Agricultural Germplasm Resources Innovation, Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Academy of Agricultural Sciences, Jinan, China
- College of Life Sciences, Shandong Normal University, Jinan, China
| | - Guanghao Wang
- Shandong International Joint Laboratory of Agricultural Germplasm Resources Innovation, Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Academy of Agricultural Sciences, Jinan, China
| | - Huan Zhang
- Shandong International Joint Laboratory of Agricultural Germplasm Resources Innovation, Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Academy of Agricultural Sciences, Jinan, China
- College of Life Sciences, Shandong Normal University, Jinan, China
| | - Aiqin Li
- Shandong International Joint Laboratory of Agricultural Germplasm Resources Innovation, Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xingjun Wang
- Shandong International Joint Laboratory of Agricultural Germplasm Resources Innovation, Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Academy of Agricultural Sciences, Jinan, China
| | - Chuanzhi Zhao
- Shandong International Joint Laboratory of Agricultural Germplasm Resources Innovation, Institute of Crop Germplasm Resources (Institute of Biotechnology), Shandong Academy of Agricultural Sciences, Jinan, China
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Liu W, Wang Y, Zhang Y, Li W, Wang C, Xu R, Dai H, Zhang L. Characterization of the pyruvate kinase gene family in soybean and identification of a putative salt responsive gene GmPK21. BMC Genomics 2024; 25:88. [PMID: 38254018 PMCID: PMC10802038 DOI: 10.1186/s12864-023-09929-7] [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: 08/18/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND As a key regulatory enzyme in the glycolysis pathway, pyruvate kinase (PK) plays crucial roles in multiple physiological processes during plant growth and is also involved in the abiotic stress response. However, little information is known about PKs in soybean. RESULTS In this study, we identified 27 PK family genes against the genome of soybean cultivar Zhonghuang13. They were classified into 2 subfamilies including PKc and PKp. 22 segmental duplicated gene pairs and 1 tandem duplicated gene pair were identified and all of them experienced a strong purifying selective pressure during evolution. Furthermore, the abiotic stresses (especially salt stress) and hormone responsive cis-elements were present in the promoters of GmPK genes, suggesting their potential roles in abiotic stress tolerance. By performing the qRT-PCR, 6 GmPK genes that continuously respond to both NaCl and ABA were identified. Subsequently, GmPK21, which represented the most significant change under NaCl treatment was chosen for further study. Its encoded protein GmPK21 was localized in the cytoplasm and plasma membrane. The transgenic Arabidopsis overexpressing GmPK21 exhibited weakened salinity tolerance. CONCLUSIONS This study provides genomic information of soybean PK genes and a molecular basis for mining salt tolerance function of PKs in the future.
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Affiliation(s)
- Wei Liu
- Crop Research Institute, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan, 250100, Shandong, China
- Shandong Engineering Laboratory of Featured Crops, 202 Gongye North Road, Jinan, 250100, Shandong, China
| | - Yubin Wang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan, 250100, Shandong, China
- Shandong Engineering Laboratory of Featured Crops, 202 Gongye North Road, Jinan, 250100, Shandong, China
| | - Yanwei Zhang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan, 250100, Shandong, China
- Shandong Engineering Laboratory of Featured Crops, 202 Gongye North Road, Jinan, 250100, Shandong, China
| | - Wei Li
- Crop Research Institute, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan, 250100, Shandong, China
- Shandong Engineering Laboratory of Featured Crops, 202 Gongye North Road, Jinan, 250100, Shandong, China
| | - Caijie Wang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan, 250100, Shandong, China
- Shandong Engineering Laboratory of Featured Crops, 202 Gongye North Road, Jinan, 250100, Shandong, China
| | - Ran Xu
- Crop Research Institute, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan, 250100, Shandong, China
- Shandong Engineering Laboratory of Featured Crops, 202 Gongye North Road, Jinan, 250100, Shandong, China
| | - Haiying Dai
- Crop Research Institute, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan, 250100, Shandong, China
- Shandong Engineering Laboratory of Featured Crops, 202 Gongye North Road, Jinan, 250100, Shandong, China
| | - Lifeng Zhang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan, 250100, Shandong, China.
- Shandong Engineering Laboratory of Featured Crops, 202 Gongye North Road, Jinan, 250100, Shandong, China.
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Yang H, Luo L, Li Y, Li H, Zhang X, Zhang K, Zhu S, Li X, Li Y, Wan Y, Liu F. Fine mapping of qAHPS07 and functional studies of AhRUVBL2 controlling pod size in peanut (Arachis hypogaea L.). PLANT BIOTECHNOLOGY JOURNAL 2023; 21:1785-1798. [PMID: 37256840 PMCID: PMC10440995 DOI: 10.1111/pbi.14076] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 04/18/2023] [Accepted: 05/12/2023] [Indexed: 06/02/2023]
Abstract
Cultivated peanut (Arachis hypogaea L.) is an important oil and cash crop. Pod size is one of the major traits determining yield and commodity characteristic of peanut. Fine mapping of quantitative trait locus (QTL) and identification of candidate genes associated with pod size are essential for genetic improvement and molecular breeding of peanut varieties. In this study, a major QTL related to pod size, qAHPS07, was fine mapped to a 36.46 kb interval on chromosome A07 using F2 , recombinant inbred line (RIL) and secondary F2 populations. qAHPS07 explained 38.6%, 23.35%, 37.48%, 25.94% of the phenotypic variation for single pod weight (SPW), pod length (PL), pod width (PW) and pod shell thickness (PST), respectively. Whole genome resequencing and gene expression analysis revealed that a RuvB-like 2 protein coding gene AhRUVBL2 was the most likely candidate for qAHPS07. Overexpression of AhRUVBL2 in Arabidopsis led to larger seeds and plants than the wild type. AhRUVBL2-silenced peanut seedlings represented small leaves and shorter main stems. Three haplotypes were identified according to three SNPs in the promoter of AhRUVBL2 among 119 peanut accessions. Among them, SPW, PW and PST of accessions carrying Hap_ATT represent 17.6%, 11.2% and 26.3% higher than those carrying Hap_GAC,respectively. In addition, a functional marker of AhRUVBL2 was developed. Taken together, our study identified a key functional gene of peanut pod size, which provides new insights into peanut pod size regulation mechanism and offers practicable markers for the genetic improvement of pod size-related traits in peanut breeding.
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Affiliation(s)
- Hui Yang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
| | - Lu Luo
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
| | - Yuying Li
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
| | - Huadong Li
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
| | - Xiurong Zhang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
| | - Kun Zhang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
| | - Suqing Zhu
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
| | - Xuanlin Li
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
| | - Yingjie Li
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
| | - Yongshan Wan
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
| | - Fengzhen Liu
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop BiologyCollege of Agronomy, Shandong Agricultural UniversityTai'anChina
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Mangena P. Cell Mutagenic Autopolyploidy Enhances Salinity Stress Tolerance in Leguminous Crops. Cells 2023; 12:2082. [PMID: 37626892 PMCID: PMC10453822 DOI: 10.3390/cells12162082] [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: 06/20/2023] [Revised: 07/30/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
Salinity stress affects plant growth and development by causing osmotic stress and nutrient imbalances through excess Na+, K+, and Cl- ion accumulations that induce toxic effects during germination, seedling development, vegetative growth, flowering, and fruit set. However, the effects of salt stress on growth and development processes, especially in polyploidized leguminous plants, remain unexplored and scantly reported compared to their diploid counterparts. This paper discusses the physiological and molecular response of legumes towards salinity stress-based osmotic and ionic imbalances in plant cells. A multigenic response involving various compatible solutes, osmolytes, ROS, polyamines, and antioxidant activity, together with genes encoding proteins involved in the signal transduction, regulation, and response mechanisms to this stress, were identified and discussed. This discussion reaffirms polyploidization as the driving force in plant evolution and adaptation to environmental stress constraints such as drought, feverish temperatures, and, in particular, salt stress. As a result, thorough physiological and molecular elucidation of the role of gene duplication through induced autopolyploidization and possible mechanisms regulating salinity stress tolerance in grain legumes must be further studied.
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Affiliation(s)
- Phetole Mangena
- Department of Biodiversity, School of Molecular and Life Sciences, Faculty of Science and Agriculture, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
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6
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Zhou B, Gao X, Zhao F. Integration of mRNA and miRNA Analysis Reveals the Post-Transcriptional Regulation of Salt Stress Response in Hemerocallis fulva. Int J Mol Sci 2023; 24:ijms24087290. [PMID: 37108448 PMCID: PMC10139057 DOI: 10.3390/ijms24087290] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
MicroRNAs (miRNAs) belong to non-coding small RNAs which have been shown to take a regulatory function at the posttranscriptional level in plant growth development and response to abiotic stress. Hemerocallis fulva is an herbaceous perennial plant with fleshy roots, wide distribution, and strong adaptability. However, salt stress is one of the most serious abiotic stresses to limit the growth and production of Hemerocallis fulva. To identify the miRNAs and their targets involved in the salt stress resistance, the salt-tolerant H. fulva with and without NaCl treatment were used as materials, and the expression differences of miRNAs-mRNAs related to salt-tolerance were explored and the cleavage sites between miRNAs and targets were also identified by using degradome sequencing technology. In this study, twenty and three significantly differential expression miRNAs (p-value < 0.05) were identified in the roots and leaves of H. fulva separately. Additionally, 12,691 and 1538 differentially expressed genes (DEGs) were also obtained, respectively, in roots and leaves. Moreover, 222 target genes of 61 family miRNAs were validated by degradome sequencing. Among the DE miRNAs, 29 pairs of miRNA targets displayed negatively correlated expression profiles. The qRT-PCR results also showed that the trends of miRNA and DEG expression were consistent with those of RNA-seq. A gene ontology (GO) enrichment analysis of these targets revealed that the calcium ion pathway, oxidative defense response, microtubule cytoskeleton organization, and DNA binding transcription factor responded to NaCl stress. Five miRNAs, miR156, miR160, miR393, miR166, and miR396, and several hub genes, squamosa promoter-binding-like protein (SPL), auxin response factor 12 (ARF), transport inhibitor response 1-like protein (TIR1), calmodulin-like proteins (CML), and growth-regulating factor 4 (GRF4), might play central roles in the regulation of NaCl-responsive genes. These results indicate that non-coding small RNAs and their target genes that are related to phytohormone signaling, Ca2+ signaling, and oxidative defense signaling pathways are involved in H. fulva's response to NaCl stress.
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Affiliation(s)
- Bo Zhou
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Northeast Forestry University, Ministry of Education, Harbin 150040, China
- College of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Xiang Gao
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics & Cytology, Northeast Normal University, Changchun 130024, China
| | - Fei Zhao
- Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China
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7
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Wu Z, Luo L, Wan Y, Liu F. Genome-wide characterization of the PP2C gene family in peanut ( Arachis hypogaea L.) and the identification of candidate genes involved in salinity-stress response. FRONTIERS IN PLANT SCIENCE 2023; 14:1093913. [PMID: 36778706 PMCID: PMC9911800 DOI: 10.3389/fpls.2023.1093913] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/09/2023] [Indexed: 06/18/2023]
Abstract
Plant protein phosphatase 2C (PP2C) play important roles in response to salt stress by influencing metabolic processes, hormone levels, growth factors, etc. Members of the PP2C family have been identified in many plant species. However, they are rarely reported in peanut. In this study, 178 PP2C genes were identified in peanut, which were unevenly distributed across the 20 chromosomes, with segmental duplication in 78 gene pairs. AhPP2Cs could be divided into 10 clades (A-J) by phylogenetic analysis. AhPP2Cs had experienced segmental duplications and strong purifying selection pressure. 22 miRNAs from 14 different families were identified, targeting 57 AhPP2C genes. Gene structures and motifs analysis exhibited PP2Cs in subclades AI and AII had high structural and functional similarities. Phosphorylation sites of AhPP2C45/59/134/150/35/121 were predicted in motifs 2 and 4, which located within the catalytic site at the C-terminus. We discovered multiple MYB binding factors and ABA response elements in the promoter regions of the six genes (AhPP2C45/59/134/150/35/121) by cis-elements analysis. GO and KEGG enrichment analysis confirmed AhPP2C-A genes in protein binding, signal transduction, protein modification process response to abiotic stimulus through environmental information processing. Based on RNA-Seq data of 22 peanut tissues, clade A AhPP2Cs showed a varying degree of tissue specificity, of which, AhPP2C35 and AhPP2C121 specifically expressed in seeds, while AhPP2C45/59/134/150 expressed in leaves and roots. qRT-PCR indicated that AhPP2C45 and AhPP2C134 displayed significantly up-regulated expression in response to salt stress. These results indicated that AhPP2C45 and AhPP2C134 could be candidate PP2Cs conferring salt tolerance. These results provide further insights into the peanut PP2C gene family and indicate PP2Cs potentially involved in the response to salt stress, which can now be further investigated in peanut breeding efforts to obtain cultivars with improved salt tolerance.
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Affiliation(s)
- Zhanwei Wu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- College of Agronomy, Shandong Agricultural University, Tai’an, China
| | - Lu Luo
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- College of Agronomy, Shandong Agricultural University, Tai’an, China
| | - Yongshan Wan
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- College of Agronomy, Shandong Agricultural University, Tai’an, China
| | - Fengzhen Liu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- College of Agronomy, Shandong Agricultural University, Tai’an, China
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8
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Hong Y, Guan X, Wang X, Kong D, Yu S, Wang Z, Yu Y, Chao ZF, Liu X, Huang S, Zhu JK, Zhu G, Wang Z. Natural variation in SlSOS2 promoter hinders salt resistance during tomato domestication. HORTICULTURE RESEARCH 2022; 10:uhac244. [PMID: 36643750 PMCID: PMC9832868 DOI: 10.1093/hr/uhac244] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/24/2022] [Indexed: 05/29/2023]
Abstract
Increasing soil salinization seriously impairs plant growth and development, resulting in crop loss. The Salt-Overly-Sensitive (SOS) pathway is indispensable to the mitigation of Na + toxicity in plants under high salinity. However, whether natural variations of SOS2 contribute to salt tolerance has not been reported. Here a natural variation in the SlSOS2 promoter region was identified to be associated with root Na+/K+ ratio and the loss of salt resistance during tomato domestication. This natural variation contains an ABI4-binding cis-element and plays an important role in the repression of SlSOS2 expression. Genetic evidence revealed that SlSOS2 mutations increase root Na+/K+ ratio under salt stress conditions and thus attenuate salt resistance in tomato. Together, our findings uncovered a critical but previously unknown natural variation of SOS2 in salt resistance, which provides valuable natural resources for genetic breeding for salt resistance in cultivated tomatoes and other crops.
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Affiliation(s)
| | | | | | - Dali Kong
- Shanghai Center for Plant Stress Biology and Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Shuojun Yu
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Zhiqiang Wang
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Yongdong Yu
- Shanghai Center for Plant Stress Biology and Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Zhen-Fei Chao
- Shanghai Center for Plant Stress Biology and Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xue Liu
- Shanghai Center for Plant Stress Biology and Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Sanwen Huang
- Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology and Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
- Institute of Advanced Biotechnology and School of Life Sciences, Southern University of Science and Technology, Shenzhen 518055, China
| | - Guangtao Zhu
- Correspondence to: ; Tel: +86-15800313102 (Zhen Wang) or ; Tel: +86-15887800218 (Guangtao Zhu)
| | - Zhen Wang
- Correspondence to: ; Tel: +86-15800313102 (Zhen Wang) or ; Tel: +86-15887800218 (Guangtao Zhu)
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