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Zhu J, Sun C, Zhang Y, Zhang M, Zhao C, Lv C, Guo B, Wang F, Zhou M, Xu R. Functional analysis on the role of HvHKT1.4 in barley (Hordeum vulgare L.) salinity tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 215:109061. [PMID: 39182425 DOI: 10.1016/j.plaphy.2024.109061] [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: 02/29/2024] [Revised: 07/07/2024] [Accepted: 08/19/2024] [Indexed: 08/27/2024]
Abstract
High-affinity potassium transporters (HKTs) are well known proteins that govern the partitioning of Na+ between roots and shoots. Six HvHKTs were identified in barley and designated as HvHKT1.1, HvHKT1.3, HvHKT1.4, HvHKT1.5, HvHKT2.1 and HvHKT2.2 according to their similarity to previously reported OsHKTs. Among these HvHKTs, HvHKT1.4 was highly up-regulated under salinity stress in both leaves and roots of Golden Promise. Subcellular localization analysis showed that HvHKT1.4 is a plasma-membrane-localized protein. The knockout mutants of HvHKT1.4 showed greater salinity sensitivity and higher Na+ concentration in leaves than wild-type plants. Haplotype analysis of HvHKT1.4 in 344 barley accessions showed 15 single nucleotide substitutions in the CDS region, belonging to five haplotypes. Significant differences in mean salinity damage scores, leaf Na+ contents and Na+/K+ were found between Hap5 and other haplotypes with Hap5 showing better salinity tolerance. The results indicated that HvHKT1.4 can be an effective target in improving salinity tolerance through ion homeostasis.
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Affiliation(s)
- Juan Zhu
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Chengqun Sun
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Yuhang Zhang
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Mengna Zhang
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Chenchen Zhao
- Tasmanian Institute of Agriculture, University of Tasmania, Private Bag 1375, Prospect, TAS, 7250, Australia
| | - Chao Lv
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Baojian Guo
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Feifei Wang
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| | - Meixue Zhou
- Tasmanian Institute of Agriculture, University of Tasmania, Private Bag 1375, Prospect, TAS, 7250, Australia
| | - Rugen Xu
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China.
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2
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Rizk MS, Assaha DVM, Mekawy AMM, Shalaby NE, Ramadan EA, El-Tahan AM, Ibrahim OM, Metwelly HIF, Okla MK, Maridueña-Zavala MG, AbdElgawad H, Ueda A. Comparative analysis of salinity tolerance mechanisms in two maize genotypes: growth performance, ion regulation, and antioxidant responses. BMC PLANT BIOLOGY 2024; 24:818. [PMID: 39215238 PMCID: PMC11363523 DOI: 10.1186/s12870-024-05533-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024]
Abstract
This study investigates the differential responses of two maize genotypes, SC180 and SC168, to salt stress, aiming to elucidate the mechanisms underlying salinity tolerance and identify traits associated with improved stress resilience. Salinity stress, imposed by 150 mM NaCl, adversely affected various growth parameters in both genotypes. SC180 exhibited a more pronounced reduction in shoot length (13.6%) and root length (13.6%) compared to SC168, which showed minimal reductions (3.0% and 2.3%, respectively). Additionally, dry weight losses in SC180's leaves, stems, and roots were significantly greater than those in SC168. Under salinity stress, both genotypes accumulated Na+ in all organs, with SC168 showing higher Na + concentrations. However, K+ levels decreased more significantly in SC180's leaves than in SC168's. The study also assessed physiological responses, noting that SC180 experienced a substantial reduction in relative water content (RWC) in leaves (22.7%), while SC168's RWC remained relatively stable (5.15%). Proline accumulation, a marker for osmotic adjustment, increased 2.3-fold in SC168 compared onefold in SC180. Oxidative stress indicators, such as electrolyte leakage and hydrogen peroxide levels, were elevated in both genotypes under salt stress, with SC180 showing higher increases (48.5% and 48.7%, respectively) than SC168 (35.25% and 22.0%). Moreover, antioxidant enzymes (APX, CAT, POD, SOD, GR) activities were significantly enhanced in SC168 under salinity stress, whereas SC180 showed no significant changes in these activities. Stress indices, used to quantify and compare salinity tolerance, consistently ranked SC168 as more tolerant (average rank = 1.08) compared to SC180 (average rank = 1.92). Correlation analyses further confirmed that SC168's superior tolerance was associated with better Na + regulation, maintenance of K+ levels, and a robust antioxidant defense system. In conclusion, SC168 demonstrated greater resilience to salinity stress, attributed to its efficient ion regulation, stable water status, enhanced osmotic adjustment, and strong antioxidant response. These findings provide valuable insights for breeding and developing salinity-tolerant maize varieties.
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Affiliation(s)
- Mosa S Rizk
- Field Crops Research Institute, Agricultural Research Center, Kafrelsheikh, 33717, Egypt
| | - Dekoum V M Assaha
- Department of Agriculture, Higher Technical Teachers' Training College, University of Buea, PO Box 249, Kumba, SWR, Cameroon
| | - Ahmad Mohammad M Mekawy
- Department of Botany and Microbiology, Faculty of Science, Minia University, El-Minia, 61519, Egypt
| | - Nagwa E Shalaby
- Field Crops Research Institute, Agricultural Research Center, Kafrelsheikh, 33717, Egypt
| | - Ebrahim A Ramadan
- Field Crops Research Institute, Agricultural Research Center, Kafrelsheikh, 33717, Egypt
| | - Amira M El-Tahan
- Plant Production Department, Arid Lands Cultivation Research Institute, The City of Scientific Research and Technological Applications, SRTA City, Borg El Arab, Alexandria, Egypt
| | - Omar M Ibrahim
- Plant Production Department, Arid Lands Cultivation Research Institute, The City of Scientific Research and Technological Applications, SRTA City, Borg El Arab, Alexandria, Egypt
| | - Hassan I F Metwelly
- Agronomy Department, Faculty of Agriculture, Kafrelsheikh University, Karelshiekh, Egypt
| | - Mohammad K Okla
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Maria Gabriela Maridueña-Zavala
- Centro de Investigaciones Biotecnológicas del Ecuador (CIBE), Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo, Km. 30.5 Vía Perimetral, Guayaquil, 090902, Ecuador.
| | - Hamada AbdElgawad
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Akihiro Ueda
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8528, Japan
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3
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Li X, Ma Q, Wang X, Zhong Y, Zhang Y, Zhang P, Du Y, Luo H, Chen Y, Li X, Li Y, He R, Zhou Y, Li Y, Cheng M, He J, Rong T, Tang Q. A teosinte-derived allele of ZmSC improves salt tolerance in maize. FRONTIERS IN PLANT SCIENCE 2024; 15:1361422. [PMID: 38903442 PMCID: PMC11188391 DOI: 10.3389/fpls.2024.1361422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 04/29/2024] [Indexed: 06/22/2024]
Abstract
Maize, a salt-sensitive crop, frequently suffers severe yield losses due to soil salinization. Enhancing salt tolerance in maize is crucial for maintaining yield stability. To address this, we developed an introgression line (IL76) through introgressive hybridization between maize wild relatives Zea perennis, Tripsacum dactyloides, and inbred Zheng58, utilizing the tri-species hybrid MTP as a genetic bridge. Previously, genetic variation analysis identified a polymorphic marker on Zm00001eb244520 (designated as ZmSC), which encodes a vesicle-sorting protein described as a salt-tolerant protein in the NCBI database. To characterize the identified polymorphic marker, we employed gene cloning and homologous cloning techniques. Gene cloning analysis revealed a non-synonymous mutation at the 1847th base of ZmSCIL76 , where a guanine-to-cytosine substitution resulted in the mutation of serine to threonine at the 119th amino acid sequence (using ZmSCZ58 as the reference sequence). Moreover, homologous cloning demonstrated that the variation site derived from Z. perennis. Functional analyses showed that transgenic Arabidopsis lines overexpressing ZmSCZ58 exhibited significant reductions in leaf number, root length, and pod number, alongside suppression of the expression of genes in the SOS and CDPK pathways associated with Ca2+ signaling. Similarly, fission yeast strains expressing ZmSCZ58 displayed inhibited growth. In contrast, the ZmSCIL76 allele from Z. perennis alleviated these negative effects in both Arabidopsis and yeast, with the lines overexpressing ZmSCIL76 exhibiting significantly higher abscisic acid (ABA) content compared to those overexpressing ZmSCZ58 . Our findings suggest that ZmSC negatively regulates salt tolerance in maize by suppressing downstream gene expression associated with Ca2+ signaling in the CDPK and SOS pathways. The ZmSCIL76 allele from Z. perennis, however, can mitigate this negative regulatory effect. These results provide valuable insights and genetic resources for future maize salt tolerance breeding programs.
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Affiliation(s)
- Xiaofeng Li
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
- Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Qiangqiang Ma
- Pingliang Academy of Agricultural Sciences, Pingliang, China
| | - Xingyu Wang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Yunfeng Zhong
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Yibo Zhang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Ping Zhang
- Animal Feeding and Management Department, Research Base of Giant Panda Breeding, Chengdu, China
| | - Yiyang Du
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Hanyu Luo
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Yu Chen
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Xiangyuan Li
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Yingzheng Li
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Ruyu He
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Yang Zhou
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Yang Li
- School of Urban and Rural Planning and Construction, Mianyang Teachers’ College, Mianyang, China
| | - Mingjun Cheng
- College of Grassland Resources, Southwest Minzu University, Chengdu, China
| | - Jianmei He
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Tingzhao Rong
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Qilin Tang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
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4
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Cao S, Chen ZJ. Transgenerational epigenetic inheritance during plant evolution and breeding. TRENDS IN PLANT SCIENCE 2024:S1360-1385(24)00112-2. [PMID: 38806375 DOI: 10.1016/j.tplants.2024.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 04/12/2024] [Accepted: 04/25/2024] [Indexed: 05/30/2024]
Abstract
Plants can program and reprogram their genomes to create genetic variation and epigenetic modifications, leading to phenotypic plasticity. Although consequences of genetic changes are comprehensible, the basis for transgenerational inheritance of epigenetic variation is elusive. This review addresses contributions of external (environmental) and internal (genomic) factors to the establishment and maintenance of epigenetic memory during plant evolution, crop domestication, and modern breeding. Dynamic and pervasive changes in DNA methylation and chromatin modifications provide a diverse repertoire of epigenetic variation potentially for transgenerational inheritance. Elucidating and harnessing epigenetic inheritance will help us develop innovative breeding strategies and biotechnological tools to improve crop yield and resilience in the face of environmental challenges. Beyond plants, epigenetic principles are shared across sexually reproducing organisms including humans with relevance to medicine and public health.
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Affiliation(s)
- Shuai Cao
- Temasek Life Sciences Laboratory, National University of Singapore, Singapore 117604, Singapore
| | - Z Jeffrey Chen
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, USA.
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5
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Zhang D, Hu Y, Li R, Tang L, Mo L, Pan Y, Mao B, Shao Y, Zhao B, Lei D. Research on Physiological Characteristics and Differential Gene Expression of Rice Hybrids and Their Parents under Salt Stress at Seedling Stage. PLANTS (BASEL, SWITZERLAND) 2024; 13:744. [PMID: 38475590 DOI: 10.3390/plants13050744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/23/2024] [Accepted: 03/05/2024] [Indexed: 03/14/2024]
Abstract
Soil salinization is one of the most important abiotic stresses which can seriously affect the growth and development of rice, leading to the decrease in or even loss of a rice harvest. Increasing the rice yield of saline soil is a key issue for agricultural production. The utilization of heterosis could significantly increase crop biomass and yield, which might be an effective way to meet the demand for rice cultivation in saline soil. In this study, to elucidate the regulatory mechanisms of rice hybrids and their parents that respond to salt stress, we investigated the phenotypic characteristics, physiological and biochemical indexes, and expression level of salt-related genes at the seedling stage. In this study, two sets of materials, encapsulating the most significant differences between the rice hybrids and their parents, were screened using the salt damage index and a hybrid superiority analysis. Compared with their parents, the rice hybrids Guang-Ba-You-Hua-Zhan (BB1) and Y-Liang-You-900 (GD1) exhibited much better salt tolerance, including an increased fresh weight and higher survival rate, a better scavenging ability towards reactive oxygen species (ROS), better ionic homeostasis with lower content of Na+ in their Na+/K+ ratio, and a higher expression of salt-stress-responsive genes. These results indicated that rice hybrids developed complex regulatory mechanisms involving multiple pathways and genes to adapt to salt stress and provided a physiological basis for the utilization of heterosis for improving the yield of rice under salt stress.
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Affiliation(s)
- Dan Zhang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
| | - Yuanyi Hu
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
- National Center of Technology Innovation for Salin-Alkali Tolerant Rice, Sanya 572000, China
- School of Tropical Agricultture and Forestry, Hainan University, Haikou 570228, China
| | - Ruopeng Li
- National Center of Technology Innovation for Salin-Alkali Tolerant Rice, Sanya 572000, China
- School of Tropical Agricultture and Forestry, Hainan University, Haikou 570228, China
| | - Li Tang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
- School of Tropical Agricultture and Forestry, Hainan University, Haikou 570228, China
| | - Lin Mo
- National Center of Technology Innovation for Salin-Alkali Tolerant Rice, Sanya 572000, China
- School of Tropical Agricultture and Forestry, Hainan University, Haikou 570228, China
| | - Yinlin Pan
- National Center of Technology Innovation for Salin-Alkali Tolerant Rice, Sanya 572000, China
| | - Bigang Mao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
- School of Tropical Agricultture and Forestry, Hainan University, Haikou 570228, China
| | - Ye Shao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
| | - Bingran Zhao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
| | - Dongyang Lei
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
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6
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Liang X, Li J, Yang Y, Jiang C, Guo Y. Designing salt stress-resilient crops: Current progress and future challenges. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024; 66:303-329. [PMID: 38108117 DOI: 10.1111/jipb.13599] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 12/10/2023] [Accepted: 12/15/2023] [Indexed: 12/19/2023]
Abstract
Excess soil salinity affects large regions of land and is a major hindrance to crop production worldwide. Therefore, understanding the molecular mechanisms of plant salt tolerance has scientific importance and practical significance. In recent decades, studies have characterized hundreds of genes associated with plant responses to salt stress in different plant species. These studies have substantially advanced our molecular and genetic understanding of salt tolerance in plants and have introduced an era of molecular design breeding of salt-tolerant crops. This review summarizes our current knowledge of plant salt tolerance, emphasizing advances in elucidating the molecular mechanisms of osmotic stress tolerance, salt-ion transport and compartmentalization, oxidative stress tolerance, alkaline stress tolerance, and the trade-off between growth and salt tolerance. We also examine recent advances in understanding natural variation in the salt tolerance of crops and discuss possible strategies and challenges for designing salt stress-resilient crops. We focus on the model plant Arabidopsis (Arabidopsis thaliana) and the four most-studied crops: rice (Oryza sativa), wheat (Triticum aestivum), maize (Zea mays), and soybean (Glycine max).
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Affiliation(s)
- Xiaoyan Liang
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing, 100094, China
| | - Jianfang Li
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100194, China
| | - Yongqing Yang
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing, 100094, China
- Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing, 100094, China
| | - Caifu Jiang
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing, 100094, China
- Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing, 100094, China
- Frontiers Science Center for Molecular Design Breeding, China Agricultural University, Beijing, 100193, China
| | - Yan Guo
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing, 100094, China
- Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing, 100094, China
- Frontiers Science Center for Molecular Design Breeding, China Agricultural University, Beijing, 100193, China
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7
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Zhou H, Shi H, Yang Y, Feng X, Chen X, Xiao F, Lin H, Guo Y. Insights into plant salt stress signaling and tolerance. J Genet Genomics 2024; 51:16-34. [PMID: 37647984 DOI: 10.1016/j.jgg.2023.08.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/01/2023]
Abstract
Soil salinization is an essential environmental stressor, threatening agricultural yield and ecological security worldwide. Saline soils accumulate excessive soluble salts which are detrimental to most plants by limiting plant growth and productivity. It is of great necessity for plants to efficiently deal with the adverse effects caused by salt stress for survival and successful reproduction. Multiple determinants of salt tolerance have been identified in plants, and the cellular and physiological mechanisms of plant salt response and adaption have been intensely characterized. Plants respond to salt stress signals and rapidly initiate signaling pathways to re-establish cellular homeostasis with adjusted growth and cellular metabolism. This review summarizes the advances in salt stress perception, signaling, and response in plants. A better understanding of plant salt resistance will contribute to improving crop performance under saline conditions using multiple engineering approaches. The rhizosphere microbiome-mediated plant salt tolerance as well as chemical priming for enhanced plant salt resistance are also discussed in this review.
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Affiliation(s)
- Huapeng Zhou
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China.
| | - Haifan Shi
- College of Grassland Science, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Yongqing Yang
- State Key Laboratory of Plant Environmental Resilience, China Agricultural University, Beijing 100193, China
| | - Xixian Feng
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China
| | - Xi Chen
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China
| | - Fei Xiao
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Honghui Lin
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yan Guo
- State Key Laboratory of Plant Environmental Resilience, China Agricultural University, Beijing 100193, China.
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Yan Z, Li K, Li Y, Wang W, Leng B, Yao G, Zhang F, Mu C, Liu X. The ZmbHLH32-ZmIAA9-ZmARF1 module regulates salt tolerance in maize. Int J Biol Macromol 2023; 253:126978. [PMID: 37741480 DOI: 10.1016/j.ijbiomac.2023.126978] [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: 06/29/2023] [Revised: 09/02/2023] [Accepted: 09/16/2023] [Indexed: 09/25/2023]
Abstract
The growth and productivity of maize (Zea mays), along with other crop plants, can be significantly hindered by salt stress. Nevertheless, the precise molecular mechanism underlying salt tolerance in maize has yet to be fully elucidated. Hence, it was attempted to identify ZmIAA9, a member of the maize Aux/IAA gene family, as a positive regulator of salt tolerance in maize, which was accompanied by the increased ROS detoxification and elevated transcript abundances of ROS scavenging genes. Molecular and biochemical assays have provided compelling evidence that ZmbHLH32, a transcription factor belonging to the bHLH family, was capable of binding directly to the promoter region of ZmIAA9, thereby activating its expression. This interaction between ZmbHLH32 and ZmIAA9 could be critical for the regulation of salt tolerance in maize. As expected, overexpression of ZmbHLH32 led to the enhanced salt tolerance. In contrast, decreased salt tolerance was attained after application of knockout mutants of ZmbHLH32. Furthermore, ZmARF1, which could act as a downstream of ZmIAA9, was found to physically interact with ZmIAA9 and repress the expression levels of ROS scavenging genes. Thus, our work uncovers a novel mechanism of ZmbHLH32-ZmIAA9-ZmARF1 module-mediated salt tolerance in maize, which can be exploited for breeding salt-tolerant maize varieties.
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Affiliation(s)
- Zhenwei Yan
- Maize Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
| | - Ke Li
- Shandong Academy of Grape, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
| | - Yanli Li
- Institute of Industrial Crops, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
| | - Wenli Wang
- Maize Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
| | - Bingying Leng
- Maize Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
| | - Guoqi Yao
- Maize Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
| | - Fajun Zhang
- Maize Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China.
| | - Chunhua Mu
- Maize Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China.
| | - Xia Liu
- Maize Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China.
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9
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Song H, Cao Y, Zhao X, Zhang L. Na+-preferential ion transporter HKT1;1 mediates salt tolerance in blueberry. PLANT PHYSIOLOGY 2023; 194:511-529. [PMID: 37757893 DOI: 10.1093/plphys/kiad510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023]
Abstract
Soil salinity is a major environmental factor constraining growth and productivity of highbush blueberry (Vaccinium corymbosum). Leaf Na+ content is associated with variation in salt tolerance among blueberry cultivars; however, the determinants and mechanisms conferring leaf Na+ exclusion are unknown. Here, we observed that the blueberry cultivar 'Duke' was more tolerant than 'Sweetheart' and accumulated less Na+ in leaves under salt stress conditions. Through transcript profiling, we identified a member of the high-affinity K+ transporter (HKT) family in blueberry, VcHKT1;1, as a candidate gene involved in leaf Na+ exclusion and salt tolerance. VcHKT1;1 encodes a Na+-preferential transporter localized to the plasma membrane and is preferentially expressed in the root stele. Heterologous expression of VcHKT1;1 in Arabidopsis (Arabidopsis thaliana) rescued the salt hypersensitivity phenotype of the athkt1 mutant. Decreased VcHKT1;1 transcript levels in blueberry plants expressing antisense-VcHKT1;1 led to increased Na+ concentrations in xylem sap and higher leaf Na+ contents compared with wild-type plants, indicating that VcHKT1;1 promotes leaf Na+ exclusion by retrieving Na+ from xylem sap. A naturally occurring 8-bp insertion in the promoter increased the transcription level of VcHKT1;1, thus promoting leaf Na+ exclusion and blueberry salt tolerance. Collectively, we provide evidence that VcHKT1;1 promotes leaf Na+ exclusion and propose natural variation in VcHKT1;1 will be valuable for breeding Na+-tolerant blueberry cultivars in the future.
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Affiliation(s)
- Huifang Song
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, Research & Development Center of Blueberry, College of Forestry, Beijing Forestry University, Beijing 100083, China
| | - Yibo Cao
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, Research & Development Center of Blueberry, College of Forestry, Beijing Forestry University, Beijing 100083, China
| | - Xinyan Zhao
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, Research & Development Center of Blueberry, College of Forestry, Beijing Forestry University, Beijing 100083, China
| | - Lingyun Zhang
- State Key Laboratory of Efficient Production of Forest Resources, Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, Research & Development Center of Blueberry, College of Forestry, Beijing Forestry University, Beijing 100083, China
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10
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Yang W, Liu X, Yu S, Liu J, Jiang L, Lu X, Liu Y, Zhang J, Li X, Zhang S. The maize ATP-binding cassette (ABC) transporter ZmMRPA6 confers cold and salt stress tolerance in plants. PLANT CELL REPORTS 2023; 43:13. [PMID: 38135780 DOI: 10.1007/s00299-023-03094-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 11/10/2023] [Indexed: 12/24/2023]
Abstract
KEY MESSAGE ZmMRPA6 was cloned and characterized as the first ATP-binding cassette (ABC) transporter in maize to be proven to participate in cold and salt tolerance. Homologous genes AtABCC4 and AtABCC14 of ZmMRPA6 also responded to salt stress. ATP-binding cassette (ABC) proteins are major transmembrane transporters that play significant roles in plant development against various abiotic stresses. However, available information regarding stress-related ABC genes in maize is minimal. In this study, a maize ABC transporter gene, ZmMRPA6, was identified through genome-wide association analysis (GWAS) for cold tolerance in maize seeds germination and functionally characterized. During germination and seedling stages, the zmmrpa6 mutant exhibited enhanced resistance to cold or salt stress. Mutated of ZmMRPA6 did not affect the expression of downstream response genes related cold or salt response at the transcriptional level. Mass spectrometry analysis revealed that most of the differential proteins between zmmrpa6 and wild-type plants were involved in response to stress process including oxidative reduction, hydrolase activity, small molecule metabolism, and photosynthesis process. Meanwhile, the plants which lack the ZmMRPA6 homologous genes AtABCC4 or AtABCC14 were sensitive to salt stress in Arabidopsis. These results indicated that ZmMRPA6 and its homologous genes play a conserved role in cold and salt stress, and functional differentiation occurs in monocotyledonous and dicotyledonous plants. In summary, these findings dramatically improved our understanding of the function of ABC transporters resistance to abiotic stresses in plants.
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Affiliation(s)
- Wei Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China
| | - Xiao Liu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China
| | - Shaowei Yu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China
| | - Jisheng Liu
- Institute of Molecular Breeding for Maize, Qilu Normal University, Jinan, 250200, Shandong, China
| | - Lijun Jiang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China
| | - Xiaoduo Lu
- Institute of Molecular Breeding for Maize, Qilu Normal University, Jinan, 250200, Shandong, China
| | - Yinggao Liu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China
| | - Jiedao Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China
| | - Xiang Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China.
| | - Shuxin Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China.
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11
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Mumtaz F, Li J, Liu Q, Arshad A, Dong Y, Liu C, Zhao J, Bashir B, Gu C, Wang X, Zhang H. Spatio-temporal dynamics of land use transitions associated with human activities over Eurasian Steppe: Evidence from improved residual analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:166940. [PMID: 37690760 DOI: 10.1016/j.scitotenv.2023.166940] [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: 03/31/2023] [Revised: 08/13/2023] [Accepted: 09/07/2023] [Indexed: 09/12/2023]
Abstract
We presented a framework to evaluate the land use transformations over the Eurasian Steppe (EUS) driven by human activities from 2000 to 2020. Framework involves three main components: (1) evaluate the spatial-temporal dynamics of land use transitions by utilizing the land change modeler (LCM) and remote sensing data; (2) quantifying the individual contributions of climate change and human activities using improved residual trend analysis (IRTA) and pixel-based partial correlation coefficient (PCC); and (3) quantifying the contributions of land use transitions to Leaf Area Index Intensity (LAII) by using the linear regression. Research findings indicate an increase in cropland (+1.17 % = 104,217 km2) over EUS, while a - 0.80 % reduction over Uzbekistan and - 0.16 % over Tajikistan. From 2000 to 2020 a slight increase in grassland was observed over the EUS region by 0.05 %. The detailed findings confirm an increase (0.24 % = 21,248.62 km2) of grassland over the 1st half (2000-2010) and a decrease (-0.19 % = -16,490.50 km2) in the 2nd period (2011-2020), with a notable decline over Kazakhstan (-0.54 % = 13,690 km2), Tajikistan (-0.18 % = 1483 km2), and Volgograd (-0.79 % = 4346 km2). Area of surface water bodies has declined with an alarming rate over Kazakhstan (-0.40 % = 10,261 km2) and Uzbekistan (-2.22 % = 8943 km2). Additionally, dominant contributions of human activities to induced LULC transitions were observed over the Chinese region, Mongolia, Uzbekistan, and Volgograd regions, with approximately 87 %, 83 %, 92 %, and 47 %, respectively, causing effective transitions to 12,997 km2 of cropland, 24,645 km2 of grassland, 16,763 km2 of sparse vegetation in China, and 12,731.2 km2 to grassland and 15,356.1 km2 to sparse vegetation in Mongolia. Kazakhstan had mixed climate-human impact with human-driven transitions of 48,568 km2 of bare land to sparse vegetation, 27,741 km2 to grassland, and 49,789 km2 to cropland on the eastern sides. Southern regions near Uzbekistan had climatic dominancy, and 8472 km2 of water bodies turned into bare soil. LAII shows an increasing trend rate of 0.63 year-1, particularly over human-dominant regions. This study can guide knowledge of oscillations and reduce adverse impacts on ecosystems and their supply services.
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Affiliation(s)
- Faisal Mumtaz
- State Key Laboratory of Remote Sensing Sciences, Aerospace Information Research Institute Chinese Academy of Science (AIRCAS), Beijing 100094, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Jing Li
- State Key Laboratory of Remote Sensing Sciences, Aerospace Information Research Institute Chinese Academy of Science (AIRCAS), Beijing 100094, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Qinhuo Liu
- State Key Laboratory of Remote Sensing Sciences, Aerospace Information Research Institute Chinese Academy of Science (AIRCAS), Beijing 100094, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Arfan Arshad
- Department of Biosystems and Agricultural Engineering, Oklahoma State University, Stillwater, OK 74075, USA
| | - Yadong Dong
- State Key Laboratory of Remote Sensing Sciences, Aerospace Information Research Institute Chinese Academy of Science (AIRCAS), Beijing 100094, China
| | - Chang Liu
- State Key Laboratory of Remote Sensing Sciences, Aerospace Information Research Institute Chinese Academy of Science (AIRCAS), Beijing 100094, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Zhao
- State Key Laboratory of Remote Sensing Sciences, Aerospace Information Research Institute Chinese Academy of Science (AIRCAS), Beijing 100094, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Barjeece Bashir
- State Key Laboratory of Remote Sensing Sciences, Aerospace Information Research Institute Chinese Academy of Science (AIRCAS), Beijing 100094, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chenpeng Gu
- State Key Laboratory of Remote Sensing Sciences, Aerospace Information Research Institute Chinese Academy of Science (AIRCAS), Beijing 100094, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaohan Wang
- State Key Laboratory of Remote Sensing Sciences, Aerospace Information Research Institute Chinese Academy of Science (AIRCAS), Beijing 100094, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hu Zhang
- State Key Laboratory of Remote Sensing Sciences, Aerospace Information Research Institute Chinese Academy of Science (AIRCAS), Beijing 100094, China
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12
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Alhammad BA, Saleem K, Asghar MA, Raza A, Ullah A, Farooq TH, Yong JWH, Xu F, Seleiman MF, Riaz A. Cobalt and Titanium Alleviate the Methylglyoxal-Induced Oxidative Stress in Pennisetum divisum Seedlings under Saline Conditions. Metabolites 2023; 13:1162. [PMID: 37999257 PMCID: PMC10673477 DOI: 10.3390/metabo13111162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023] Open
Abstract
Salinity is considered to be a global problem and a severe danger to modern agriculture since it negatively impacts plants' growth and development at both cellular- and whole-plant level. However, cobalt (Co) and titanium (Ti), multifunctional non-essential micro-elements, play a crucial role in improving plant growth and development under salinity stress. In the current study, Co and Ti impact on the morphological, biochemical, nutritional, and metabolic profile of Pennisetum divisum plants under three salinity levels which were assessed. Two concentrations of Co (Co-1; 15.0 mg/L and Co-2; 25.0 mg/L), and two concentrations of Ti (Ti-1; 50.0 mg/L and Ti-2; 100.0 mg/L) were applied as foliar application to the P. divisum plants under salinity (S1; 200 mM, S2; 500 mM, and S3; 1000 mM) stress. The results revealed that various morphological, biochemical, and metabolic processes were drastically impacted by the salinity-induced methylglyoxal (MG) stress. The excessive accumulation of salt ions, including Na+ (1.24- and 1.21-fold), and Cl- (1.53- and 1.15-fold) in leaves and roots of P. divisum, resulted in the higher production of MG (2.77- and 2.95-fold) in leaves and roots under severe (1000 mM) salinity stress, respectively. However, Ti-treated leaves showed a significant reduction in ionic imbalance and MG concentrations, whereas considerable improvement was shown in K+ and Ca2+ under salinity stress, and Co treatment showed downregulation of MG content (26, 16, and 14%) and improved the antioxidant activity, such as a reduction in glutathione (GSH), oxidized glutathione (GSSG), Glutathione reductase (GR), Glyoxalase I (Gly I), and Glyoxalase II (Gly II) by up to 1.13-, 1.35-, 3.75-, 2.08-, and 1.68-fold under severe salinity stress in P. divisum roots. Furthermore, MG-induced stress negatively impacted the metabolic profile and antioxidants activity of P. divisum's root and leaves; however, Co and Ti treatment considerably improved the biochemical processes and metabolic profile in both underground and aerial parts of the studied plants. Collectively, the results depicted that Co treatment showed significant results in roots and Ti treatment presented considerable changes in leaves of P. divism under salinity stress.
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Affiliation(s)
- Bushra Ahmed Alhammad
- Biology Department, College of Science and Humanity Studies, Prince Sattam Bin Abdulaziz University, Al Kharj Box 292, Riyadh 11942, Saudi Arabia
| | - Khansa Saleem
- Department of Horticultural Sciences, The Islamia University of Bahawalpur, Bahawalpur 6300, Pakistan
| | - Muhammad Ahsan Asghar
- Department of Biological Resources, Agricultural Institute, Centre for Agricultural Research, ELKH, 2 Brunzvik St., 2462 Martonvásár, Hungary
| | - Ali Raza
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Abd Ullah
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Taimoor Hassan Farooq
- Bangor College China, A Joint Unit of Bangor University and Central South University of Forestry and Technology, Changsha 410004, China
| | - Jean W. H. Yong
- Department of Biosystems and Technology, Swedish University of Agricultural Sciences (SLU), 234 22 Lomma, Sweden
| | - Fei Xu
- Applied Biotechnology Center, Wuhan University of Bioengineering, Wuhan 430415, China
| | - Mahmoud F. Seleiman
- Plant Production Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
- Department of Crop Sciences, Faculty of Agriculture, Menoufia University, Shibin El-Kom 32514, Egypt
| | - Aamir Riaz
- Department of Horticultural Sciences, The Islamia University of Bahawalpur, Bahawalpur 6300, Pakistan
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13
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Yang Z, Cao Y, Shi Y, Qin F, Jiang C, Yang S. Genetic and molecular exploration of maize environmental stress resilience: Toward sustainable agriculture. MOLECULAR PLANT 2023; 16:1496-1517. [PMID: 37464740 DOI: 10.1016/j.molp.2023.07.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/03/2023] [Accepted: 07/15/2023] [Indexed: 07/20/2023]
Abstract
Global climate change exacerbates the effects of environmental stressors, such as drought, flooding, extreme temperatures, salinity, and alkalinity, on crop growth and grain yield, threatening the sustainability of the food supply. Maize (Zea mays) is one of the most widely cultivated crops and the most abundant grain crop in production worldwide. However, the stability of maize yield is highly dependent on environmental conditions. Recently, great progress has been made in understanding the molecular mechanisms underlying maize responses to environmental stresses and in developing stress-resilient varieties due to advances in high-throughput sequencing technologies, multi-omics analysis platforms, and automated phenotyping facilities. In this review, we summarize recent advances in dissecting the genetic factors and networks that contribute to maize abiotic stress tolerance through diverse strategies. We also discuss future challenges and opportunities for the development of climate-resilient maize varieties.
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Affiliation(s)
- Zhirui Yang
- State Key Laboratory of Plant Environmental Resilience, Frontiers Science Center for Molecular Design Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yibo Cao
- State Key Laboratory of Plant Environmental Resilience, Frontiers Science Center for Molecular Design Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yiting Shi
- State Key Laboratory of Plant Environmental Resilience, Frontiers Science Center for Molecular Design Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Feng Qin
- State Key Laboratory of Plant Environmental Resilience, Frontiers Science Center for Molecular Design Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China.
| | - Caifu Jiang
- State Key Laboratory of Plant Environmental Resilience, Frontiers Science Center for Molecular Design Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China.
| | - Shuhua Yang
- State Key Laboratory of Plant Environmental Resilience, Frontiers Science Center for Molecular Design Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China.
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14
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Peng Y, Cao H, Cui L, Wang Y, Wei L, Geng S, Yang L, Huang Y, Bie Z. CmoNAC1 in pumpkin rootstocks improves salt tolerance of grafted cucumbers by binding to the promoters of CmoRBOHD1, CmoNCED6, CmoAKT1;2 and CmoHKT1;1 to regulate H 2O 2, ABA signaling and K +/Na + homeostasis. HORTICULTURE RESEARCH 2023; 10:uhad157. [PMID: 37719275 PMCID: PMC10500151 DOI: 10.1093/hr/uhad157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/04/2023] [Indexed: 09/19/2023]
Abstract
The NAC transcription factor is a type of plant-specific transcription factor that can regulate plant salt tolerance, but the underlying mechanism is unclear in grafted vegetables. H2O2 and ABA in pumpkin rootstocks can be transported to cucumber scion leaves, promoting stomatal closure to improve salt tolerance of grafted cucumbers. Despite these observations, the regulatory mechanism is unknown. Here, our research revealed that CmoNAC1 is a key transcription factor that regulates H2O2 and ABA signaling in pumpkin roots under salt stress. The function of CmoNAC1 was analyzed using root transformation and RNA-seq, and we found that pumpkin CmoNAC1 promoted the production of H2O2 and ABA via CmoRBOHD1 and CmoNCED6, respectively, and regulated K+/Na+ homeostasis via CmoAKT1;2, CmoHKT1;1, and CmoSOS1 to improve salt tolerance of grafted cucumbers. Root knockout of CmoNAC1 resulted in a significant decrease in H2O2 (52.9% and 32.1%) and ABA (21.8% and 42.7%) content and K+/Na+ ratio (81.5% and 56.3%) in leaf and roots of grafted cucumber, respectively, while overexpression showed the opposite effect. The root transformation experiment showed that CmoNCED6 could improve salt tolerance of grafted cucumbers by regulating ABA production and K+/Na+ homeostasis under salt stress. Finally, we found that CmoNAC1 bound to the promoters of CmoRBOHD1, CmoNCED6, CmoAKT1;2, and CmoHKT1;1 using yeast one-hybrid, luciferase, and electrophoretic mobility shift assays. In conclusion, pumpkin CmoNAC1 not only binds to the promoters of CmoRBOHD1 and CmoNCED6 to regulate the production of H2O2 and ABA signals in roots, but also binds to the promoters of CmoAKT1;2 and CmoHKT1;1 to increase the K+/Na+ ratio, thus improving salt tolerance of grafted cucumbers.
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Affiliation(s)
- Yuquan Peng
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Haishun Cao
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
- Institute of Facility Agriculture, Guangdong Academy of Agricultural Sciences, 510640 Guangzhou, China
| | - Lvjun Cui
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Ying Wang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Lanxing Wei
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Shouyu Geng
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Li Yang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Yuan Huang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Zhilong Bie
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
- Hubei Hongshan Laboratory, 430070 Wuhan, China
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15
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Fu H, Yang Y. How Plants Tolerate Salt Stress. Curr Issues Mol Biol 2023; 45:5914-5934. [PMID: 37504290 PMCID: PMC10378706 DOI: 10.3390/cimb45070374] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/13/2023] [Accepted: 07/13/2023] [Indexed: 07/29/2023] Open
Abstract
Soil salinization inhibits plant growth and seriously restricts food security and agricultural development. Excessive salt can cause ionic stress, osmotic stress, and ultimately oxidative stress in plants. Plants exclude excess salt from their cells to help maintain ionic homeostasis and stimulate phytohormone signaling pathways, thereby balancing growth and stress tolerance to enhance their survival. Continuous innovations in scientific research techniques have allowed great strides in understanding how plants actively resist salt stress. Here, we briefly summarize recent achievements in elucidating ionic homeostasis, osmotic stress regulation, oxidative stress regulation, and plant hormonal responses under salt stress. Such achievements lay the foundation for a comprehensive understanding of plant salt-tolerance mechanisms.
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Affiliation(s)
- Haiqi Fu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
- Tianjin Key Laboratory of Crop Genetics and Breeding, Institute of Crop Sciences, Tianjin Academy of Agricultural Sciences, Tianjin 300380, China
| | - Yongqing Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
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16
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Zhao Z, Zheng H, Wang M, Guo Y, Wang Y, Zheng C, Tao Y, Sun X, Qian D, Cao G, Zhu M, Liang M, Wang M, Gong Y, Li B, Wang J, Sun Y. Reshifting Na + from Shoots into Long Roots Is Associated with Salt Tolerance in Two Contrasting Inbred Maize ( Zea mays L.) Lines. PLANTS (BASEL, SWITZERLAND) 2023; 12:1952. [PMID: 37653869 PMCID: PMC10220590 DOI: 10.3390/plants12101952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/24/2023] [Accepted: 05/08/2023] [Indexed: 09/02/2023]
Abstract
Maize, as a glycophyte, is hypersensitive to salinity, but the salt response mechanism of maize remains unclear. In this study, the physiological, biochemical, and molecular responses of two contrasting inbred lines, the salt-tolerant QXH0121 and salt-sensitive QXN233 lines, were investigated in response to salt stress. Under salt stress, the tolerant QXH0121 line exhibited good performance, while in the sensitive QXN233 line, there were negative effects on the growth of the leaves and roots. The most important finding was that QXH0121 could reshift Na+ from shoots into long roots, migrate excess Na+ in shoots to alleviate salt damage to shoots, and also improve K+ retention in shoots, which were closely associated with the enhanced expression levels of ZmHAK1 and ZmNHX1 in QXH0121 compared to those in QXN233 under salt stress. Additionally, QXH0121 leaves accumulated more proline, soluble protein, and sugar contents and had higher SOD activity levels than those observed in QXN233, which correlated with the upregulation of ZmP5CR, ZmBADH, ZmTPS1, and ZmSOD4 in QXH0121 leaves. These were the main causes of the higher salt tolerance of QXH0121 in contrast to QXN233. These results broaden our knowledge about the underlying mechanism of salt tolerance in different maize varieties, providing novel insights into breeding maize with a high level of salt resistance.
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Affiliation(s)
- Zhenyang Zhao
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Hongxia Zheng
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China;
| | - Minghao Wang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Yaning Guo
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Yingfei Wang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Chaoli Zheng
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Ye Tao
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Xiaofeng Sun
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Dandan Qian
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Guanglong Cao
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Mengqian Zhu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Mengting Liang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Mei Wang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Yan Gong
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Bingxiao Li
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Jinye Wang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
| | - Yanling Sun
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266237, China; (Z.Z.); (M.W.); (Y.G.); (Y.W.); (C.Z.); (Y.T.); (X.S.); (D.Q.); (G.C.); (M.Z.); (M.L.); (M.W.); (Y.G.); (B.L.); (J.W.)
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17
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Yin P, Liang X, Zhao H, Xu Z, Chen L, Yang X, Qin F, Zhang J, Jiang C. Cytokinin signaling promotes salt tolerance by modulating shoot chloride exclusion in maize. MOLECULAR PLANT 2023:S1674-2052(23)00109-0. [PMID: 37101396 DOI: 10.1016/j.molp.2023.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 03/18/2023] [Accepted: 04/23/2023] [Indexed: 05/26/2023]
Abstract
Excessive accumulation of chloride (Cl-) in the aboveground tissues under saline conditions is harmful to crops. Increasing the exclusion of Cl- from shoots promotes salt tolerance in various crops. However, the underlying molecular mechanisms remain largely unknown. In this study, we demonstrated that a type A response regulator (ZmRR1) modulates Cl- exclusion from shoots and underlies natural variation of salt tolerance in maize. ZmRR1 negatively regulates cytokinin signaling and salt tolerance, likely by interacting with and inhibiting His phosphotransfer (HP) proteins that are key mediators of cytokinin signaling. A naturally occurring non-synonymous SNP variant enhances the interaction between ZmRR1 and ZmHP2, conferring maize plants with a salt-hypersensitive phenotype. We found that ZmRR1 undergoes degradation under saline conditions, leading to the release of ZmHP2 from ZmRR1 inhibition, and subsequently ZmHP2-mediated signaling improves salt tolerance primarily by promoting Cl- exclusion from shoots. Furthermore, we showed that ZmMATE29 is transcriptionally upregulated by ZmHP2-mediated signaling under highly saline conditions and encodes a tonoplast-located Cl- transporter that promotes Cl- exclusion from shoots by compartmentalizing Cl- into the vacuoles of root cortex cells. Collectively, our study provides an important mechanistic understanding of the cytokinin signaling-mediated promotion of Cl- exclusion from shoots and salt tolerance and suggests that genetic modification to promote Cl- exclusion from shoots is a promising route for developing salt-tolerant maize.
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Affiliation(s)
- Pan Yin
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing 100094, China
| | - Xiaoyan Liang
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing 100094, China
| | - Hanshu Zhao
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, China
| | - Zhipeng Xu
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing 100094, China
| | - Limei Chen
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing 100094, China; Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing 100094, China
| | - Xiaohong Yang
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing 100094, China; Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing 100094, China; Laboratory of Agrobiotechnology and National Maize Improvement Center of China, Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, China
| | - Feng Qin
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing 100094, China
| | - Jingbo Zhang
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, China.
| | - Caifu Jiang
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing 100094, China; Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing 100094, China; Laboratory of Agrobiotechnology and National Maize Improvement Center of China, Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, China; Outstanding Discipline Program for the Universities in Beijing, Beijing 100094, China.
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18
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Cao Y, Song H, Zhang L. New Insight into Plant Saline-Alkali Tolerance Mechanisms and Application to Breeding. Int J Mol Sci 2022; 23:ijms232416048. [PMID: 36555693 PMCID: PMC9781758 DOI: 10.3390/ijms232416048] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/02/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Saline-alkali stress is a widespread adversity that severely affects plant growth and productivity. Saline-alkaline soils are characterized by high salt content and high pH values, which simultaneously cause combined damage from osmotic stress, ionic toxicity, high pH and HCO3-/CO32- stress. In recent years, many determinants of salt tolerance have been identified and their regulatory mechanisms are fairly well understood. However, the mechanism by which plants respond to comprehensive saline-alkali stress remains largely unknown. This review summarizes recent advances in the physiological, biochemical and molecular mechanisms of plants tolerance to salinity or salt- alkali stress. Focused on the progress made in elucidating the regulation mechanisms adopted by plants in response to saline-alkali stress and present some new views on the understanding of plants in the face of comprehensive stress. Plants generally promote saline-alkali tolerance by maintaining pH and Na+ homeostasis, while the plants responding to HCO3-/CO32- stress are not exactly the same as high pH stress. We proposed that pH-tolerant or sensitive plants have evolved distinct mechanisms to adapt to saline-alkaline stress. Finally, we highlight the areas that require further research to reveal the new components of saline-alkali tolerance in plants and present the current and potential application of key determinants in breed improvement and molecular breeding.
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