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The RING zinc finger protein LbRZF1 promotes salt gland development and salt tolerance in Limonium bicolor

Journal of Integrative Plant Biology 2024年第4期66卷 787-809页

作者： Zongran Yang Ziwei Zhang Ziqi Qiao Xueying Guo Yixuan Wen Yingxue Zhou Chunliang Yao Hai Fan Baoshan Wang Guoliang Han Shandong Provincial Key Laboratory of Plant Stress College of Life SciencesShandong Normal UniversityJi'nan 250014China National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land Agricultural High-tech Industrial Demonstration Area of the Yellow River Delta of Shandong ProvinceDongying 257000China Dongying Institute Shandong Normal UniversityDongying 257000China

The recretohalophyte Limonium bicolor thrives in high-salinity environments because salt glands on the above-ground parts of the plant help to expel excess salt.Here,we characterize a nucleus-localized C3HC4(RING-HC)-type zinc finger protein of L.bicolor named RING ZINC FINGER PROTEIN 1(LbRZF1).LbRZF1 was expressed in salt glands and in response to NaCl treatment.LbRZF1 showed no E3 ubiquitin ligase activity.The phenotypes of overexpression and knockout lines for LbRZF1 indicated that LbRZF1 positively regulated salt gland development and salt tolerance in L.bicolor.lbrzf1 mutants had fewer salt glands and secreted less salt than did the wild-type,whereas LbRZF1-overexpressing lines had opposite phenotypes,in keeping with the overall salt tolerance of these plants.A yeast two-hybrid screen revealed that LbRZF1 interacted with LbCATALASE2(LbCAT2)and the transcription factor LbMYB113,leading to their stabilization.Silencing of LbCAT2 or LbMYB113 decreased salt gland density and salt tolerance.The heterologous expression of LbRZF1 in Arabidopsis thaliana conferred salt tolerance to this non-halophyte.We also identified the transcription factor LbMYB48 as an upstream regulator of LbRZF1 transcription.The study of LbRZF1 in the regulation network of salt gland development also provides a good foundation for transforming crops and improving their salt resistance.

关键词： LbRZF1 Limonium bicolor molecular mechanism salt gland development salt tolerance

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The OsWRKY72-OsAAT30/OsGSTU26 module mediates reactive oxygen species scavenging to drive heterosis for salt tolerance in hybrid rice

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Journal of Integrative Plant Biology 2024年第4期66卷 709-730页

作者： Citao Liu Bigang Mao Yanxia Zhang Lei tian Biao Ma Zhuo Chen Zhongwei Wei Aifu Li Ye Shao Gongye Cheng Lingling Li Wenyu Li Di Zhang Xiaoping Ding Jiangxiang Peng Yulin Peng Jiwai He Nenghui Ye Dingyang Yuan Chengcai Chu Meijuan Duan Hunan Provincial Key Laboratory of Stress Biology College of AgricultureHunan Agricultural UniversityChangsha 410128China State Key Laboratory of Hybrid Rice Hunan Hybrid Rice Research CenterChangsha 410125China College of Agriculture South China Agricultural UniversityGuangzhou 510642China State Key Laboratory of Wheat and Maize Crop Science Center for Crop Genome EngineeringCollege of AgronomyHenan Agricultural UniversityZhengzhou 450002China College of Horticulture Fujian Agriculture and Forestry UniversityFuzhou 350002China Department of Computational Medicine and Bioinformatics University of MichiganAnn ArborMI 48109 USA Biobin Data Science Co. Ltd.Changsha 410221China

Hybrid rice(Oryza sativa)generally outperforms its inbred parents in yield and stress tolerance,a phenomenon termed heterosis,but the underlying mechanism is not completely understood.Here,we combined transcriptome,proteome,physiological,and heterosis analyses to examine the salt response of super hybrid rice Chaoyou1000(CY1000).In addition to surpassing the mean values for its two parents(mid-parent heterosis),CY1000 exhibited a higher reactive oxygen species scavenging ability than both its parents(over-parent heterosis or heterobeltiosis).Nonadditive expression and allele-specific gene expression assays showed that the glutathione S-transferase gene OsGSTU26 and the amino acid transporter gene OsAAT30 may have major roles in heterosis for salt tolerance,acting in an overdominant fashion in CY1000.Furthermore,we identified OsWRKY72 as a common transcription factor that binds and regulates OsGSTU26 and OsAAT30.The salt-sensitive phenotypes were associated with the OsWRKY72^(paternal)genotype or the OsAAT30^(maternal)genotype in core rice germplasm varieties.OsWRKY72^(paternal)specifically repressed the expression of OsGSTU26 under salt stress,leading to salinity sensitivity,while OsWRKY72^(maternal)specifically repressed OsAAT30,resulting in salinity tolerance.These results suggest that the OsWRKY72-OsAAT30/OsGSTU26 module may play an important role in heterosis for salt tolerance in an overdominant fashion in CY1000 hybrid rice,providing valuable clues to elucidate the mechanism of heterosis for salinity tolerance in hybrid rice.

关键词： allele-specific gene expression(ASE) heterosis hybrid rice nonadditive effect(NAE) salt tolerance transcriptome and proteome

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Multidimensional evaluation of salt tolerance in groundnut genotypes through biochemical responses

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Oil Crop Science 2024年第2期9卷 102-110页

作者： Rushita D.Parmar Vaishali G.Varsani Vijay Parmar Suhas Vyas Dushyant Dudhagara Department of Life Sciences Bhakta Kavi Narsinh Mehta UniversityJunagadhGujaratIndia

The manuscript explores the complex interplay between groundnut genotypes,salt tolerance and hormonal influence,shedding light on the dynamic responses of three specific groundnut genotypes,KDG-128,TG-37 A and GG-20,to salt treatments and gibberellic acid(GA3).The study encompasses germination,plant growth,total protein content and oil content as key parameters.Through comprehensive analysis,it identifies TG-37 A and KDG-128 as salt-tolerant genotypes,and GG-20 as salt-susceptible genotypes,which highlighting the potential for targeted breeding efforts to develop more resilient groundnut varieties.Moreover,the quantification of protein and oil content under different treatments provides vital data for optimizing nutritional profiles in groundnut cultivars.Principal Component Analysis(PCA) underscores the significance of the first principal component(PC1)in explaining the majority of variance,capturing primary trends and differences in plant length.Analysis of Variance(ANOVA) and hierarchical analysis confirm the presence of statistically significant differences in protein and oil content among the genotypes.Pearson's correlation coefficient matrix analysis reveals strong positive correlations between plant length and protein content,plant length and oil content,and a moderately positive correlation between protein content and oil content.These findings provide valuable insights into groundnut physiology,salt tolerance,and nutritional composition,with implications for future research in sustainable agriculture and crop improvement.

关键词： Groundnut salt tolerance Genotypes salt-hormone interaction Protein and oil content Statistical analysis

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Polyamine oxidase 3 is involved in salt tolerance at the germination stage in rice

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Journal of Genetics and Genomics 2022年第5期49卷 458-468页

作者： Guangyu Liu Wanxia Jiang Lei Tian Yongcai Fu Lubin Tan Zuofeng Zhu Chuanqing Sun Fengxia Liu State Key Laboratory of Plant Physiology and Biochemistry China Agricultural UniversityBeijing 100193China National Center for Evaluation of Agricultural Wild Plants(Rice) Beijing Key Laboratory of Crop Genetic ImprovementLaboratory of Crop Heterosis and UtilizationMOEDepartment of Plant Genetics and BreedingChina Agricultural UniversityBeijing 100193China

Soil salinity inhibits seed germination and reduces seedling survival rate,resulting in significant yield reductions in crops.Here,we report the identification of a polyamine oxidase,OsPAO3,conferring salt tolerance at the germination stage in rice(Oryza sativa L.),through map-based cloning approach.OsPAO3 is up-regulated under salt stress at the germination stage and highly expressed in various organs.Overexpression of OsPAO3 increases activity of polyamine oxidases,enhancing the polyamine content in seed coleoptiles.Increased polyamine may lead to the enhance of the activity of ROS-scavenging enzymes to eliminate over-accumulated H;O;and to reduce Na;content in seed coleoptiles to maintain ion homeostasis and weaken Na;damage.These changes resulted in stronger salt tolerance at the germination stage in rice.Our findings not only provide a unique gene for breeding new salt-tolerant rice cultivars but also help to elucidate the mechanism of salt tolerance in rice.

关键词： Polyamine oxidase OsPAO3 salt tolerance Germination stage Rice

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OsMPK4 promotes phosphorylation and degradation of IPA1 in response to salt stress to confer salt tolerance in rice

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Journal of Genetics and Genomics 2022年第8期49卷 766-775页

作者： Meiru Jia Nan Luo Xiangbing Meng Xiaoguang Song Yanhui Jing Liquan Kou Guifu Liu Xiahe Huang Yingchun Wang Jiayang Li Bing Wang Hong Yu State Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China

salt stress adversely affects plant growth,development,and crop yield.Rice(Oryza sativa L.)is one of the most salt-sensitive cereal crops,especially at the early seedling stage.Mitogen-activated protein kinase(MAPK/MPK)cascades have been shown to play critical roles in salt response in Arabidopsis.However,the roles of the MPK cascade signaling in rice salt response and substrates of Os MPK remain largely unknown.Here,we report that the salt-induced Os MPK4-Ideal Plant Architecture 1(IPA1)signaling pathway regulates the salt tolerance in rice.Under salt stress,Os MPK4 could interact with IPA1 and phosphorylate IPA1 at Thr180,leading to degradation of IPA1.Genetic evidence shows that IPA1 is a negative regulator of salt tolerance in rice,whereas Os MPK4 promotes salt response in an IPA1-dependent manner.Taken together,our results uncover an Os MPK4-IPA1 signal cascade that modulates the salt stress response in rice and sheds new light on the breeding of salt-tolerant rice varieties.

关键词： Oryza sativa MPK OsMPK4 IPA1 salt tolerance

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Cytokinin signaling promotes salt tolerance by modulating shoot chloride exclusion in maize

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Molecular Plant 2023年第6期16卷 1031-1047页

作者： Pan Yin Xiaoyan Liang Hanshu Zhao Zhipeng Xu Limei Chen Xiaohong Yang Feng Qin Jingbo Zhang Caifu Jiang State Key Laboratory of Plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBejing 100094China State Key Laboratory of Nutrient Use and Management College of Resources and Environmental SciencesNational Academy of Agriculture Green DevelopmentChinaAgriculturalUniversityBeijing100193China Center for Crop Functional Genomics and Molecular Breeding China Agricultural UniversityBejing 100094China Laboratory of Agrobiotechnology and National Maize Improvement Center of China Department of Plant Genetics and BreedingChina Agricultural UniversityBeijing100193China Outstanding Discipline Program for the Universities in Bejing Beijing 100094China

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.

关键词： cytokinin signaling salt tolerance high-Cl^(-)tolerance Cl^(-)transporter maize

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Anα/βhydrolase family member negatively regulates salt tolerance but promotes flowering through three distinct functions in rice

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Molecular Plant 2022年第12期15卷 1908-1930页

作者： You-Huang Xiang Jia-Jun Yu Ben Liao Jun-Xiang Shan Wang-Wei Ye Nai-Qian Dong Tao Guo Yi Kan Hai Zhang Yi-Bing Yang Ya-Chao Li Huai-Yu Zhao Hong-Xiao Yu Zi-Qi Lu Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics&DevelopmentShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642China University of the Chinese Academy of Sciences Beijing 100049China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China

Ongoing soil salinization drastically threatens crop growth,development,and yield worldwide.It is therefore crucial that we improve salt tolerance in rice by exploiting natural genetic variation.However,many salt-responsive genes confer undesirable phenotypes and therefore cannot be effectively applied to practical agricultural production.In this study,we identified a quantitative trait locus for salt tolerance from the African rice species Oryza glaberrima and named it as salt tolerance and Heading Date 1(STH1).We found that STH1 regulates fatty acid metabolic homeostasis,probably by catalyzing the hydrolytic degradation of fatty acids,which contributes to salt tolerance.Meanwhile,we demonstrated that STH1 forms a protein complex with D3 and a vital regulatory factor in salt tolerance,OsHAL3,to regulate the protein abundance of OsHAL3 via the 26S proteasome pathway.Furthermore,we revealed that STH1 also serves as a co-activator with the floral integrator gene Heading date 1 to balance the expression of the florigen gene Heading date 3a under different circumstances,thus coordinating the regulation of salt tolerance and heading date.Notably,the allele of STH1 associated with enhanced salt tolerance and high yield is found in some African rice accessions but barely in Asian cultivars.Introgression of the STH1HP46 allele from African rice into modern rice cultivars is a desirable approach for boosting grain yield under salt stress.Collectively,our discoveries not only provide conceptual advances on the mechanisms of salt tolerance and synergetic regulation between salt tolerance and flowering time but also offer potential strategies to overcome the challenges resulted from increasingly serious soil salinization that many crops are facing.

关键词： rice salt tolerance flowering time grain yield fatty acid

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Eco-friendly aqueous foam stabilized by cellulose microfibers with great salt tolerance and high temperature resistance

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Petroleum Science 2023年第4期20卷 2499-2511页

作者： Li-Li Yang Xian-Bo He Yi-Xiu Cheng Guan-Cheng Jiang Ze-Yu Liu Shi-Bo Wang Shi-Xin Qiu Jian-Hua Wang Wei-Guo Tian MOE Key Laboratory of Petroleum Engineering State Key Laboratory of Petroleum Resources and EngineeringChina University of Petroleum(Beijing)Changping DistrictBeijing102249China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Engineering PlasticsInstitute of Chemistry Chinese Academy of Sciences(CAS)Haidian DistrictBeijing100190China MOE Key CNPC Drilling Research Institute Changping DistrictBeijing102206China

A low-cost eco-friendly aqueous foam,especially the robust foam with great tolerance to high salinity and high temperature,is in great demand in the oil industry,e.g.,oil and gas well or geothermal well drilling.Herein,an ultra-stable aqueous foam was developed using the biodegradable cellulose microfiber(CMF)as a foam stabilizer.The foam stabilized by CMF shows excellent tolerance to the high concentration of NaCl(6.0 wt%)and CaCl_(2)(0.25 wt%)and the related drainage half-life times(T_(0.5))reach 1750 and 2340 s respectively.By contrast,the foams without CMF are completely drained(T_(0.5)=0 s)when NaCl concentration is greater than 6.0 wt%or CaCl_(2) concentration is greater than 0.20 wt%.Notably,T0.5 of the foams stabilized by CMF at these saline concentrations still can maintain above 1000 s even after aging at 120℃ for 16 h,exhibiting an outstanding foam-stabilizing performance at high temperature.Experimental results suggest that the salt and high-temperature tolerance of CMF in foam stabilization is attributed to the electrically uncharged surfaces,the formation of a gel-like structure and the excellent thermal stability.This work not only provides a promising candidate of aqueous foam stabilizer to deal with high temperature and high salinity but also presents a natural-based solution for an environmentally friendly drilling industry in the future.

关键词： Aqueous foam Foam stabilizer Cellulose microfiber salt tolerance Sustainable

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Physiological analysis reveals relatively higher salt tolerance in roots of Ilex integra than in those of Ilex purpurea

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Journal of Forestry Research 2022年第4期33卷 1187-1196页

作者： Yongfan Yu Min Zhang Jianyuan Feng Sujing Sun Peng Zhou Jiading Yang Co-Innovation Center for Sustainable Forestry in Southern China College of Biology and the EnvironmentNanjing Forestry UniversityNanjing 210037People’s Republic of China Jiangsu Academy of Forestry Nanjing 211153People’s Republic of China

Determining the responses of candidate plants to salt stress is a prerequisite for selecting and breeding suitable plants with high salt tolerance to grow in coastal mudfl at areas with high salinity.Here,2-year cutting seedlings of Ilex purpurea Hassk.(local species)and I.integra Thunb.(introduced species)were grown in pots in a glasshouse and irrigated with a Hoagland-NaCl solution at 0,24,and 48 h.Root samples were collected at 0,1,6,24,and 72 h,and concentration of Na^(+)ion;content of proline,soluble carbohydrate,malondialdehyde(MDA),H_(2)O_(2) and ascorbate;and activity of three key antioxidative enzymes were measured.Roots of I.integra accumulated relatively less Na^(+)and had less membrane lipid peroxidation and H_(2)O_(2) during salt stress,thus indicating a relatively higher salt tolerance than roots of I.purpurea.Values for ascorbate content and antioxidant enzymatic activity suggest that the antioxidant ascorbate and antioxidative catalase may play substantial roles for scavenging reactive oxygen species in I.integra roots during salt treatment.Thus,I.integra is apparently more suitable for growing in local highly saline coastal mudfl ats.

关键词： salt tolerance Ilex purpurea Ilex integra Lipid peroxidation Na^(+)accumulation Antioxidant capacity

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Overexpression of the ThTPS gene enhanced salt and osmotic stress tolerance in Tamarix hispida

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Journal of Forestry Research 2022年第1期33卷 299-308页

作者： Peilong Wang Xiaojin Lei Jiaxin Lü Caiqiu Gao State Key Laboratory of Tree Genetics and Breeding(Northeast Forestry University) Harbin 150040People’s Republic of China

Trehalose is a non-reducing disaccharide with high stability and strong water absorption properties that can improve the resistance of organisms to various abiotic stresses.Trehalose-6-phosphate synthase(TPS)plays important roles in trehalose metabolism and signaling.In this study,the full-length cDNA of ThTPS was cloned from Tamarix hispida Willd.A phylogenetic tree including ThTPS and 11 AtTPS genes from Arabidopsis indicated that the ThTPS protein had a close evolutionary relationship with AtTPS7.However,the function of At TPS7 has not been determined.To analyze the abiotic stress tolerance function of ThTPS,the expression of ThTPS in T.hispida under salt and drought stress and JA,ABA and GA3 hormone stimulation was monitored by qRT-PCR.The results show that ThTPS expression was clearly induced by all five of these treatments at one or more times,and salt stress caused particularly strong induction of Th TPS in the roots of T.hispida.The ThTPS gene was transiently overexpressed in T.hispida.Both physiological indexes and staining results showed that ThTPS gene overexpression increased salt and osmotic stress tolerance in T.hispida.Overall,the Th TPS gene can respond to abiotic stresses such as salt and drought,and its overexpression can significantly improve salt and osmotic tolerance.These findings establish a foundation to better understand the responses of TPS genes to abiotic stress in plants.

关键词： Trehalose-6-phosphate synthase(TPS) Tamarix hispida salt tolerance Osmotic resistance

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