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Comprehensive evaluation of tolerance to alkali stress by 17 genotypes of apple rootstocks

Journal of Integrative Agriculture 2016年第7期15卷 1499-1509页

作者： ZHANG Kun-xi WEN Tian DONG Jun MA Feng-wang BAI Tuan-hui WANG Kun LI Cui-ying State Key Laboratory of Crop stress Biology for Arid Areas/College of Horticulture Northwest A&F University College of Horticulture Henan Agricultural University Institute of Pomology Chinese Academy of Agricultural Sciences

alkaline soils have a great inlfuence on apple production in Northern China. Therefore, comprehensive evaluations of toler-ance to such stress are important when selecting the most suitable apple rootstocks. We used hydroponics culturing to test 17 genotypes of apple rootstocks after treatment with 1：1Na2CO3and NaHCO3. When compared with the normaly grown controls, stressed plants produced fewer new leaves, and had shorter roots and shoots and lower fresh and dry weights after 15 d of exposure to alkaline conditions. Their root/shoot ratios were also reduced, indicating that the roots had been severely damaged. For al stressed rootstocks, electrolyte leakage （EL） and the concentration of malondialdehyde （MDA） increased while levels of chlorophyl decreased. Changes in root activity （up or down）, as wel as the activities of peroxidase （POD）, superoxide dismutase （SOD）, and catalase （CAT） were rootstock-dependent, possibly relfecting their differences in alkali tolerance. Using alkali injury index （AI）, adversity resistance coefifcients （ARC）,cluster analysis, and evaluation of their physiological responses, we classiifed these 17 genotypes into three groups：（1） high tolerance： Hubeihaitang, Wushanbianyehaitang, Laoshanhaitang Ls2, Xiaojinbianyehaitang, and Fupingqiuzi; （2） moderate tolerance： Pingyitiancha, Laoshanhaitang Ls3, Hubeihaitang A1, Deqinhaitang, Balenghaitang, Maoshandingzi, Shandingzi, and Xinjiangyepingguo; or （3） low tolerance： Pingdinghaitang, Hongsanyehaitang, Xiaojinhaitang, and Sanyehaitang. These results wil signiifcantly contribute to the selection of the most suitable materials for rootstocks with desired levels of tolerance to alkali stress.

关键词： alkali stress apple rootstock alkali tolerance

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Effect of alkali stress on Soluble Sugar, Antioxidant Enzymes and Yield of Oat

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Journal of Integrative Agriculture 2013年第8期12卷 1441-1449页

作者： BAI Jian-hui LIU Jing-hui ZHANG Na YANG Jun-heng SA Ru-la WU Lan Science Innovation Team of Oat Inner Mongolia Agricultural University College of Foreign Languages Inner Mongolia Agricultural University

alkali stress can cause severe crop damage and reduce production. However, physiological processes involved in alkali stress in oat seedlings are not well understood. In this study, physiological responses and yield of oat to alkali stress were studied using the alkali-tolerant oat genotype Vao-9 and the alkali-sensitive oat genotype Baiyan 5. The results were：（i） low concentrations of alkali stress （25 and 50 mmol L^-1） significantly reduced the yield and grain weight while increased the oat grain number per spike. A negative correlation between yield and malondialdehyde （MDA） content at the jointing and grain filling stages and positive correlations between yield on one hand and superoxide dismutase （SOD）, and peroxidase （POD） activities on the other at the jointing stage were observed. There was a positive correlation between MDA and soluble sugar at the grain filling stage; （ii） soluble sugar content was increased at the jointing and grain filling stages and decreased at the heading stage by alkali stress; （iii） alkali stress increased the SOD activity during the heading and grain filling stages, and increased the POD activity at the heading stage. As compared to the control, the increase of MDA contents in alkali-treated oat was observed, during the jointing, heading and grain filling stages; （iv） under alkali stress, the oat genotype Vao-9 showed higher antioxidant enzyme activity and lower soluble sugar contents during the heading stage, and lower MDA contents than those in the oat genotype Baiyan 5 under alkali stress. The result suggested that the high ROS scavenging capacity and soluble sugar levels might play roles in oat response to alkali stress,

关键词： oat alkali stress MDA soluble sugar antioxidant enzyme yield

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Adaptive strategy of Nitraria sibirica to transient salt,alkali and osmotic stresses via the alteration of Na+/K+fluxes around root tips

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Journal of Forestry Research 2023年第2期34卷 425-432页

作者： Xindi Mei Ting Dai Yingbai Shen Xinjiang Key Laboratory of Biological Resources and Genetic Engineering College of Life Science and TechnologyXinjiang UniversityUrumqi 830046People’s Republic of China National Engineering Laboratory for Tree Breeding Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental PlantsMinistry of EducationThe Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland AdministrationCollege of Biological Sciences and BiotechnologyBeijing Forestry UniversityBeijing 100083People’s Republic of China

Nitraria sibirica *** an important shrub with a strong salt-alkali tolerance,but the mechanism underlying this tolerance remains *** this study,***,with salt-sensitive Vigna radiata(Linn.)Wilczek as the control,was subjected to transient salt stress(100 mM NaCl),alkali stress(50 mM Na_(2)CO_(3)),and osmotic stress(175 mM mannitol).The ionic fluxes of Na^(+)and K^(+)in the root apical region were *** show that,under salt and alkali stress,*** roots exhibited higher capacities to limit Na+influx and reduce K+efflux,thereby resulting in lower Na^(+)/K^(+)ratios compared with *** *** stress induced stronger Na^(+)influx and K+efflux in the root salt stress treatment;Na^(+)influx was mainly observed in the root cap,while K^(+)efflux was mainly observed in the elongation *** under osmotic stress,*** roots showed stronger Na+efflux and weaker K+efflux than *** ***+efflux was mainly observed in the root elongation zone,while K+efflux was in the root *** results reveal the ionic strategy of *** in response to transient salt,alkali,and osmotic stresses through the regulation of Na+/K+flux homeostasis.

关键词： Nirtaria sibirica Na^(+)/K^(+)fl uxes Na^(+)/K^(+)ratios Salt stress alkali stress Osmotic stress

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Physiologic and Transcriptomic Insights into the High alkali Response of Dunaliella salina

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Phyton-International Journal of Experimental Botany 2021年第5期90卷 1401-1414页

作者： Jun Zhou Haiqing Sun Jiali Wei Ping Li Shanghai Key Laboratory of Bio-Energy Crops School of Life SciencesShanghai UniversityShanghai200444China

The halophilic unicellular green alga Dunaliella salina is characterized as the distinct tolerance to high salt in the *** the organism is concurrently subjected with salt and alkali stress,but the feature of *** in response to high alkali stress was not investigated *** this study,we used high pH stress to simulate high alkali stress and found *** also showed tolerance to high alkali stress,even grown under pH at 11.0,with high cell density and chlorophyll ***-throughput transcriptome analysis revealed the dramatically different expression of genes associated with nitrogen metabolism,lipid andβ-carotene biosynthesis after high alkali ***,physiologic analysis showed that high alkali treatment induced the expression and activity of nitrate reductase(NR),which generated nitric oxide(NO)as the messenger,and ultimately induced the accumulation of lipid andβ-carotene *** NR activity or NO generation also reduced high-alkali-induced lipid andβ-carotene biosynthesis,as well as attenuated the tolerance of *** to high alkali ***,our physiologic and transcriptomic data reveal the novel function of NR-dependent NO signal during the adaptation of *** to high alkali stress,through inducing the biosynthesis of lipid andβ-carotene biosynthesis.

关键词： alkali stress transcriptome nitrate reductase lipid biosynthesis β-carotene biosynthesis

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Genome-wide analysis of soybean DnaJA-family genes and functional characterization of GmDnaJA6 responses to saline and alkaline stress

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The Crop Journal 2023年第4期11卷 1230-1241页

作者： Binshuo Zhang Zhen Liu Runnan Zhou Peng Cheng Haibo Li Zhiyang Wang Ying Liu Mingyang Li Zhenqing Zhao Zhenbang Hu Qingshan Chen Xiaoxia Wu Ying Zhao College of Agriculture Northeast Agricultural UniversityHarbin 150030HeilongjiangChina

Plant Dna JA proteins act as molecular chaperones in response to environmental *** purpose of this study was to characterize the function and regulatory mechanisms of Dna JA genes in *** expression profiles in various soybean tissues at various stages of development indicated that Gm Dna JAs function in the coordination of stress and plant hormone *** Dna JA6 was identified as a candidate regulator of saline and alkaline stress resistance and Gm Dna JA6 overexpression lines showed increased soybean saline and alkaline *** J interacted with Hsp70,and Gm Hsp70 increased the saline and alkaline tolerance of plants with chimeric soybean hairy roots.

关键词： Soybean Heat shock proteins DnaJ Salt stress alkali stress

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alkali tolerance in rice(Oryza sativa L.):nitrogen metabolism and ion homeostasis

Alkali tolerance in rice(Oryza sativa L.):nitrogen metabolis...

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2012年中国作物学会学术年会

作者： Wang Huan,Shi Decheng,Yang Chunwu Key laboratory of Molecular Epigenetics of MOE,Northeast Normal University,Changchun 130024,China

alkali stress is an important agricultural contaminant and has complex effects on plant metabolism specifically root physiology,but the physiological and molecular mechanisms by which plants tolerates alkali stress remains largely *** between the genotypes differing in alkali tolerance may be helpful for alkali tolerance research and identifying alkali-tolerant candidate *** this study,two rice(Oryza sativa L.) cultivars differing in alkali tolerance were chosen as the test *** seedlings of the two rice cultivars were subjected to salt stress(NaCl:Na2SO4 = 9:1;pH 5.32) or alkali stress(NaHCO3:Na2CO3 = 9:1;pH 9.09).The growth,photosynthesis,inorganic ions,and organic acids in the stressed seedlings were then *** expression of some critical genes involved in nitrogen metabolism and ion balance also was assayed to test their roles in rice alkali ***,we will find some candidate genes involved in rice alkali tolerance,which may be vital for molecular breeding and alkali tolerance *** results showed that,compared to the alkali-sensitive cultivar,alkali-tolerant cultivar could keep a higher root system activity under alkali ***,the Na+ content in its shoots was much lower than that of alkali-sensitive cultivar under alkali stress,and the contents of mineral ions(e.g.,K+,NO3-and H2PO4-) in its roots were higher than those of sensitive *** data showed that the metabolic regulation of roots may play a central role in rice alkali *** roots also showed much greater gene expression differences between the cultivars than *** roots,46.5%(20 of 43) of select genes indicated over 5-fold expression differences between the cultivars under alkali *** alkali-tolerant rice has a higher root system activity,that is able to regulate pH surrounding the roots,and protect shoots from Na+ injury and keep normal metabolism *** adaptation of alkali-tolerant rice to alk

关键词： Rice alkali stress Nitrogen metabolism Ion balance

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Comparative Transcriptome Profiling of Glycine soja Roots Under Salinity and alkalinity stresses Using RNA-seq

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Journal of Northeast Agricultural University(English Edition) 2018年第3期25卷 29-43页

作者： Zhu Yan-ming Li Ji-na DuanMu Hui-zi Yin kui-de Cheng Shu-fei Chen Chao Cao Lei Duan Xiang-bo Chen Ran-ran College of Life Sciences Northeast Agricultural University College of Life Sciences Heilongjiang University College of Life Sciences and Technology Heilongjiang Bayi Agricultural University

Saline-alkaline stress can dramatically inhibit plant growth and limit crop production. Wild soybean （Glycine soja） is a crop that adapts well to such environmental stresses. In this study, RNA-sequencing technology was used to analyze the transcriptome profles of G. soja roots subjected to 50 mmol·L^-1 NaHCO3 and 150 mmol·L^-1 NaCl treatments. Totally, 2 125 differentially-expressed genes （DEGs） after NaCl treatment and 1 839 DEGs after NaHCO3 treatment were identifed. The top 14 DEGs revealed by RNA-seq were analyzed using qRT-PCR （quantitative real-time polymerase chain reaction）. Gene ontology （GO） annotation showed that most of DEGs under salt and alkali stresses were enriched in ＂metabolic process＂, ＂catalytic activity＂ and ＂binding＂ terms. To search for transcription factors （TFs） among DEGs, the data were screened against TF database PlantTFDB, and it was found that fve TF families, Apetala2/ethylene-responsive element binding proteins （AP2-EREBP）, V-myb avian myeloblastosis viral oncogene homolog （MYB）, WRKYGQK and Zinc fnger motif （WRKY）, NAM, ATAF1/2, CUC1/2 （NAC） and Cys2/His2 （C2H2） were involved in salt stress response. Other fve TF families, NAC, WRKY, MYB, AP2-EREBP and bZIP were involved in response to alkali stress. These two stress treatments shared NAC, WRKY, AP2-EREBP and MYB, and the only two different TFs were bZIP and C2H2. Forty-eight MYB TFs were differentially expressed under salt and alkali stresses, and most of them were up-regulated. This study provided useful information for further investigation of DEGs and TFs in response to saline and alkaline stresses and helped in understanding the molecular basis of the response of G. soja to saline and alkaline stresses.

关键词： RNA-seq wild soybean salt stress alkali stress

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Isolation and cloning of genes induced by sodium carbonate in Leymus chinensis

Isolation and cloning of genes induced by sodium carbonate i...

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ⅩⅪ International Grassland Congress and the Ⅷ International Rangeland Congress

作者： Z.W.Liang,X.J.Kong,M.Liu,H.Y.Ma,Z.C.Wang Northeast Institute of Geography and Agricultural Ecology,CAS,Changchun,Jilin 130012,China Da’an Sodic Land Experiment Station of China,Da’an Jilin 131317,China

Introduction *** is the dormant species of Songnen plain which is high tolerant to saline alkali *** salinity is one of the most serious abiotic stresses and has become the main limiting factor of the world-wide agricultural *** genes tolerant to salt have been cloned but few to *** aim of this study is to isolate and clone the genes in response to sodium carbonate.

关键词： cloning mRNA differential display alkali stress SIGL Leymus chinensis

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