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Flavonol synthase gene MsFLS13 regulates saline-alkali stress tolerance in alfalfa

The Crop Journal 2023年第4期11卷 1218-1229页

作者： Lishuang Zhang Yugang Sun Jinqiang Ji Weidi Zhao Weileng Guo Jiaqi Li Yan Bai Dan Wang Zhe Yan Changhong Guo Key Laboratory of Molecular and Cytogenetics College of Life Science and TechnologyHarbin Normal UniversityHarbin 150025HeilongjiangChina Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

Alfalfa(Medicago sativa L.) is one of the most extensively grown leguminous forage worldwide.Environmental saline-alkali stress significantly influences the growth,development,and yield of alfalfa,posing a threat to its agricultural production.However,little is known about the potential mechanisms by which alfalfa responds to saline-alkali stress.Here,we investigated these mechanisms by cloning a saline-alkali-induced flavonol synthase gene(Ms FLS13) from alfalfa,which was previously reported to be significantly upregulated under saline-alkali stress,and examining its function in the saline-alkali response.Overexpression of Ms FLS13 in alfalfa promoted plant tolerance to saline-alkali stress by enhancing flavonol accumulation,antioxidant capacity,osmotic balance,and photosynthetic efficiency.Conversely,Ms FLS13 inhibition using RNA interference reduced flavonol synthase activity and inhibited hairy root growth under saline-alkali stress.Yeast one-hybrid and dual-luciferase reporter assays indicated that the R2R3-MYB Ms MYB12 transcription factor activates Ms FLS13 expression by binding to the MBS motif in the Ms FLS13 promoter.Further analysis revealed that abscisic acid mediates the salinealkali stress response partially by inducing Ms MYB12 and Ms FLS13 expression,which consequently increases flavonol levels and maintains antioxidant homeostasis in alfalfa.Collectively,our findings highlight the crucial role of Ms FLS13 in alfalfa in response to saline-alkali stress and provide a novel genetic resource for creating saline-alkali-resistant alfalfa through genetic engineering.

关键词： Alfalfa saline-alkali Msfls13 Msmyb12 Antioxidant

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Cloning of a Vacuolar H^+-pyrophosphatase Gene from the Halophyte Suaeda corniculata whose Heterologous Overexpression Improves Salt,saline-alkali and Drought Tolerance in Arabidopsis

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Journal of Integrative Plant Biology 2011年第9期53卷 731-742页

作者： Liang Liu Ying Wang Nan Wang Yuan-Yuan Dong Xiu-Duo Fan Xiu-Ming Liu Jing Yang Hai-Yan Li Ministry of Education Engineering Research Center of Bioreactor and Pharmaceutical Development Jilin Agricultural UniversityChangchun 130118China College of Life Sciences Jilin Agricultural UniversityChangchun 130118China

Salt,saline-alkali conditions,and drought are major environmental factors limiting plant growth and productivity.The vacuolar H＋-translocating inorganic pyrophosphatase（V-H＋-PPase） is an electrogenic proton pump that translocates protons into vacuoles in plant cells.Expression of V-H＋-PPase increases in plants under a number of abiotic stresses,and is thought to have an important role in adaptation to abiotic stress.In this work,we report the isolation and characterization of the gene,ScVP,encoding a vacuolar inorganic pyrophosphatase（V-H＋-PPase） from the halophyte,Suaeda corniculata.Semiquantitative reverse transcription-polymerase chain reaction analysis showed that ScVP was induced in roots,stems and leaves under treatment with salt,saline-alkali and drought.Compared with wild-type（WT） Arabidopsis,transgenic plants overexpressing ScVP accumulated more Na＋ in leaves and roots,and showed increased tolerance to high salinity,saline-alkali and drought stresses.The germination percentage of transgenic Arabidopsis seeds was higher than that of WT seeds under the abiotic stresses.The root length of transgenic plants under salt stress was longer than that of WT plants.Furthermore,the rate of water loss during drought stress was higher in WT than in transgenic plants.Collectively,these results indicate that ScVP plays an important role in plant tolerance to salt,saline-alkali and drought stress.

关键词： drought H^＋-pyrophosphatase salt saline-alkali Suaeda corniculata.

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Effects of Soil Improver on Wheat in saline-alkali Lands in the Yellow River Delta

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Agricultural Biotechnology 2019年第2期8卷 133-136页

作者： Liang DONG Shenzhong TIAN Zeqiang SUN Xuejun WANG Zhaohui LIU Ruiqin LI Ye TIAN Deshui TAN Jiafa LUO Institute of Agricultural Resources and Environment Shandong Academy of Agricultural Science Key Laboratory of Agro-Environment of Huang-Huai-Hai Plain Ministry of Agriculture Shandong Provincial Key Laboratory of Plant Nutrition and Fertilizer

Field experiment carried out to test the effects of soil improver on wheat yield and soil physical-chemical properties. The results indicated that soil improver could optimize soil aggregates structure, decrease soil bulk density, soil pH and soil salt content, increase soil organic matter and 1 000-grain weight, thereby enhancing wheat yield. With the increase of soil improver application amount, soil physical-chemical properties became better and wheat yield increased. However, there was no significant difference in the treatments with the application amounts of 3%, 4% and 5%. In addition, the treatment of reducing nitrogen showed no superiority in soil physical-chemical properties and wheat yield, indicating that sufficient nitrogen was essential for the growth of wheat.

关键词： Soil improver, saline-alkali land Wheat

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Photoresponse Process and Model Comparison of Paeonia ludlowii under saline-alkali Stress

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Meteorological and Environmental Research 2019年第4期10卷 84-87,92页

作者： Ge Qingsong Gao Yi Wang Hang Fang Jiangping Res. Institute of Tibet Plateau Ecology Tibet Agriculture & Animal Husbandry University Nyingchi 860000 China Tibet Key Laboratory of Forest Ecology in Plateau Area Ministry of Education Nyingchi 860000 China National Key Station of Field Scientific Observation & Experiment Nyingchi 860000 China Key Laboratory of Forest Ecology in Plateau Area Tibet Autonomous Region Nyingchi 860000 China United Key Laboratories of Ecological Security Tibet Autonomous Region Nyingchi 860000 China Resources & Environment College Tibet Agriculture & Animal Husbandry University Nyingchi 860000 China Food Science College Tibet Agriculture & Animal Husbandry University Nyingchi 860000 China

The research aimed to analyze changes in photosynthetic characteristics of Paeonia ludlowii under saline-alkali stress, and annual seedlings of P. ludlowii were taken as the materials. Photoresponse process of P. ludlowii leaves under saline-alkali stress was simulated, and different models were used to fit photoresponse curve. The results showed that P n of P. ludlowii leaves showed the trend of first rising and then declining with PAR increased under saline-alkali stress;both G s and T r showed a rising trend with PAR increased;C i showed the trend of first declining and then rising with PAR increased. Photoresponse curve fitted by modified rectangular hyperbolic model had the best effect, and it was the optimal fitting model. P. ludlowii could adapt to saline-alkali stress in lower concentration, showing that P. ludlowii could be introduced and cultivated in saline-alkali land at a lower level.

关键词： P. ludlowii saline-alkali stress Photosynthetic parameters Photoresponse model

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saline-alkali(Mixed) Dust Storms and Their Main Generation Mechanism

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 195-195页

作者： SONG Huailong Institute of Oceanology Chinese Academy of Sciences

The exposed surface of the dry salt lake basin contains a large number of extremely fine lightweight saline-alkali(mixed)dust and clay dust.It is extremely easy to dust and since saline-alkali lake is low-lying and it... 详细信息

关键词： Dust Storms and Their Main Generation Mechanism Mixed saline-alkali

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Combined application of a straw layer and flue gas desulphurization gypsum to reduce soil salinity and alkalinity

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Pedosphere 2020年第2期30卷 226-235页

作者： Yonggan ZHAO Yan LI Shujuan WANG Jing WANG Lizhen XU Beijing Engineering Research Center for Ecological Restoration and Carbon Fixation of saline-alkaline and Desert Land Department of Thermal EngineeringTsinghua UniversityBeijing 100084China Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural SciencesBeijing 100081China

Burying a straw layer and applying flue gas desulphurization(FGD)gypsum are effective practices to ameliorate soil salinization or alkalization and to increase crop yield;however,little information exists on the effects of such integration in saline-alkali soils.A soil column experiment was conducted to investigate the effects of a straw layer plus FGD gypsum on soil salinity and alkalinity.We placed a straw layer(5 cm thick)at a depth of 30 cm and mixed FGD gypsum into the 0–20 cm soil layer at application rates of 7.5,15.0,22.5,and 30.0 t ha^-1,with no straw layer and FGD gypsum as a control(CK).The soil water content in the 0–30 cm soil layer was significantly higher(>7.8%)in the treated soil profiles after infiltration than in the CK,but decreased after evaporation.The electrical conductivity(EC)of the 10–30 cm soil layer was 230.2%and 104.9%higher in the treated soil profiles than in the CK after infiltration and evaporation,respectively,and increased with increasing rates of FGD gypsum application,with Ca^2+and SO4^2-being the main dissolved salts.Compared to those in the CK,the concentrations of Na^+,Cl^-,and HCO3-decreased in the treated soil profiles at depths above 55 cm,but the other soluble ions increased,after infiltration.A similar trend occurred after evaporation for all soluble ions except for HCO3-.The p H and exchangeable sodium percentage in the treated soil profiles were significantly lower than those in the CK over the entire profile,and decreased with increasing FGD gypsum application rates.Therefore,the incorporation of a straw layer plus FGD gypsum can reduce salinity and alkalinity,but the quantity of FGD gypsum should be controlled in saline-alkali soils.

关键词： alkaline soil saline-alkali stress saline soil salt accumulation secondary salinization soil amelioration soil reclamation

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Overexpression of SOS2-like protein kinase 4(PKS4) gene increases saline-alkali tolerance in transgenic soybean

Overexpression of SOS2-like protein kinase 4(PKS4) gene incr...

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2013全国植物生物学大会

作者： REN Chao ZHANG Jie ZHOU Dan ZHOU Ying WANG Longfei JIN Jing WANG Nan WANG Fawei LI Haiyan College of Life Science Jilin Agricultural University Ministry of Education Engineering Research Center of Bioreactor and Pharmaceutical Development Jilin Agricultural University

Soil saline-alkali is a severe and increasing constraint on the productivity of agricultural crops.Salt-overly-sensitive(SOS) signal transduction pathway plays a key role in salinealkali stress.In thi

关键词： saline-alkali GmPKS4 soybean

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Transport Characteristics of Soil Salinity in saline- alkali Land under Water Storage and Drainage Conditions

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Asian Agricultural Research 2015年第9期7卷 65-69 72,72页

作者： Juan LI Jichang HAN Shaanxi Land Engineering Construction Group College of Forestry Northwest A&F University Key Laboratory of Degraded and Unused Land Consolidation Engineering the Ministry of Land and Resources of China

To test the variation and transport of soil salinity in saline- alkali land under water storage and drainage treatments,an experimental model was established in Fuping,Shaanxi Province,2009. The variation of soil salinity during 0- 160 cm soil depth under the two treatments was determined and analyzed. Results showed that the average soil water content under water storage treatment was 4. 47% higher than that under drainage treatment,which means that the water storage treatment could help to improve soil moisture to satisfy the crop's growth needs. The profile distribution of soil soluble solids( TDS),anion( Cl-,HCO3-,SO2-4) and cation( Ca2 +,Na+,K+) content and the variation of soil p H were also measured and analyzed. PCA( Principal Component Analysis) was used to explore the relationship between the soil salinity and its ions,which showed that the water storage treatment could significantly decrease the surface salinity of soil and accelerate the desalination of topsoils,and finally,the soil quality was improved significantly,demonstrating that the water storage treatment has a remarkable effect on soil salinity management.

关键词： saline-alkali land Storage Drainage Soil salinity

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Fenlong Tillage System by the Theory of “Natural Forces” and Possibility of “Fenlong Agriculture” Establishment

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Meteorological and Environmental Research 2019年第1期10卷 59-63,69页

作者： Wei Benhui Cash Crops Research Institute Guangxi Academy of Agricultural Sciences

"Natural forces" ——core theory of Fenlong technique is explored in this paper. We break through key core technique of farming and agriculture,and invent new method of Fenlong tillage. Broad-spectrum Fenlong tillage technique system based on "full-layer and bottom-layer superdeep tillage without disturbance of soil layer" is established,which provides the possibility for establishing "modern Fenlong agriculture". When applied in 35 kinds of crops in 24 provinces of China,yield could be increased by 10%-50%,and even 1 times. In the transformation of severe saline-alkali land,corn yield could increase by 73. 0%,and Na,Cl and Mg ions in grain decrease by 20. 81%,1. 47%,and 9. 36% respectively. The newly developed "scarification tillage( reclamation) in the bottom area" could cover "bottom tillage" of dryland,paddy field,degraded grassland,perennial sugarcane,forest and fruit land,traditional Chinese medicine land,and ecological reconstruction of desertification land. It is point out that if Fenlong technique is used in 666 666. 67 km2 of farmland,200 000 km2 of saline-alkali land,666 666. 67 km2 of degraded grassland,and fisheries in rivers and offshore waters are used,trillion yuan of Fenlong economy could be formed,and the nationals will walk towards a healthier new era.Fenlong technique involves agriculture,forestry,water,grass,environment and other aspects,and its global promotion could improve eco-environment and change world development pattern.

关键词： Fenlong series of tillage Super-deep without disturbance soil layer Yield and quality improvement saline-alkali land transformation Modern agriculture

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Influences of Soda Soil on the Ultrastructure and Storage Inclusions of Chloroplasts of <i>Syringa oblata</i>Lindl.

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Natural Resources 2019年第9期10卷 337-345页

作者： Ziguo Zhao Fengjuan Zhao Shandong Provincial Engineering and Technology Research Center for Wild Plant Resources Development and Application of Yellow River Delta College of Biological and Environmental Engineering Binzhou University Binzhou China Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta College of Biological and Environmental Engineering Binzhou University Binzhou China

With a high pH value, soda soil restricts the growth of plants. It had previously been assumed that the inhibition of plant growth by neutral salt stress was partly due to the changes of the ultrastructure and storage inclusions of chloroplasts. The aim of this paper is to investigate the effects of alkali-salt mixed stress of soda soil on chloroplasts of higher plant Syringa oblata Lindl. Testing S. oblata plants had grown for more than five years in soda soil, and transmission electron microscope was used for determining the ultrastructure and storage inclusions of chloroplasts. The results showed that some chloroplasts were destroyed, the normal chloroplasts became smaller, and the envelopes of the functional chloroplasts were slightly expanded generally in soda-stressed plants. The most noteworthy fact was that much more starchgrains accumulated in the chloroplasts of S. oblata growing in soda soil than in neutral soil. The total contents of plastoglobules in chloroplasts did not change considerably, and plastoglobules with different electron densities appeared in chloroplasts in the plants growing in soda soil. We presume that the reduction of the volume and number of functional chloroplasts and the occupation of carbon resources by starch grains accumulated in chloroplasts were the possible reasons for the inhibition of S. oblata growth by soda soil. The accumulation of starch grains was one of the adaptive traits of S. oblata, which promoted the survival of plants in soda soil for that the starch grains could serve as a steady source of soluble sugars, which were known as protectors of plant cells under stressed conditions. Soda soil did not significantly change the total content of plastoglobules in chloroplasts, but changed their compositions.

关键词： Lilac saline-alkali Soil Structure Inclusion Syringa oblata

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