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Cloning of Salt Tolerance-Related cDNAs from the Mangrove Plant Sesuvium portulacastrum L.

Journal of Integrative Plant biology 2006年第8期48卷 952-957页

作者： Hui-Cai Zeng Liu-Hong Deng Chun-Fa Zhang State Key Laboratory of Tropical crop Biotechnology Institute of Tropical Bioscience and Biotechnology Chinese Academy of Tropical Agricultural Science （ CATAS） Kaikou 571101 China environmental and Plant protection Institute CATAS Danzhou 571737 China

In an attempt to isolate and identify the target genes relevant to salt tolerance in a mangrove plant （Sesuvium portulacastrum L.）, a subtracted cDNA library was constructed via suppressive subtractive hybridization （SSH）, in which the poly（A）＋RNA isolated from salt-tolerant S. portulacastrum leaves was used as a tester, whereas the driver was poly（A）＋RNA, derived from salt-sensitive S. portulacastrum leaves. Screening of this subtracted cDNA library revealed five clones, of which the expression levels in the salt-tolerant plant were markedly higher than those observed in the salt-sensitive plant, indicating that these candidate clones may be involved in salt-tolerance pathways. Among the clones isolated, P66, P175, and P233 are novel because no significant similarity was obtained upon alignment with the GenBank database. Clone P89 demonstrated high homology with NADPH of Arabidopsis thaliana, whereas clone P152 was highly homologous with the gene encoding late embryogenesis abundant （LEA） protein of A. thaliana. The full-length gene of clone P152, with a predicated 344 amino acid residues, was shown to bear LEA-2 domains, a signature motif for proteins that have been enriched under salty and drought conditions. It is thus implied that clone P152 would be a salt-tolerance gene of S. portulacastrum. In addition, we have also developed a strategy for the extraction of total RNA from mangrove plants.

关键词： mangrove salt tolerance-related cDNAs Sesuvium portulacastrum suppressive subtractive hybridization.

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Genome-wide analysis of NDR1/HIN1-like genes in pepper(Capsicum annuum L.)and functional characterization of CaNHL4 under biotic and abiotic stresses

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Horticulture Research 2020年第1期7卷 1611-1625页

作者： Changyun Liu Haoran Peng Xinyu Li Chaolong Liu Xing Lv Xuefeng Wei Aihong Zou Jian Zhang Guangjin Fan Guanhua Ma Lisong Ma Xianchao Sun Laboratory of plant immunity and ecological control of plant disease College of Plant ProtectionSouthwest University400716 ChongqingChina department of Botany and Plant biology Section of BiologyFaculty of ScienceUniversity of Geneva1211 Geneva 4Switzerland State Key Laboratory of North China crop Improvement and Regulation College of Plant ProtectionHebei Agricultural University071001 BaodingChina

Plant NDR1/HIN1-like(NHL)genes play an important role in triggering plant defenses in response to biotic *** this study,we performed a genome-wide identification of the NHL genes in pepper(Capsicum annuum L.)and characterized the functional roles of these CaNHL genes in response to abiotic stresses and infection by different *** analysis revealed that CaNHLs can be classified into five distinct subgroups,with each group containing generic and specific *** element analysis showed that the majority of the promoter regions of the identified CaNHLs contain jasmonic acid(JA)-responsive and salicylic acid(SA)-responsive elements,and transcriptomic analysis revealed that CaNHL genes are expressed in all the examined tissues of *** CaNHL1,CaNHL4,CaNHL6,CaNHL10,CaNHL11,and CaNHL12 genes were significantly upregulated under abiotic stress as well as in response to different pathogens,such as TMV,Phytophthora capsici and Pseudomonas *** addition,we found that CaNHL4 localizes to the plasma ***4-silenced pepper plants display significantly increased susceptibility to TMV,Phytophthora capsici and Pseudomonas syringae,exhibiting reduced expression of JA-related and SA-related genes and reduced ROS ***,transient overexpression of CaNHL4 in pepper increases the expression of JArelated and SA-related genes,enhances the accumulation of ROS,and inhibits the infection of these three ***,for the first time,we identified the NHL genes in pepper and demonstrated that CaNHL4 is involved in the production of ROS and that it also regulates the expression of JA-related and SA-related genes in response to different pathogens,suggesting that members of the CaNHL family play an essential role in the disease resistance of pepper.

关键词： pepper analysis functional

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Plant virus-derived siRNAs“turn on”broad-spectrum plant immunity in wheat

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Molecular Plant 2021年第7期14卷 1038-1040页

作者： Paola Leonetti Vitantonio Pantaleo department of biology Agricultural and Food SciencesInstitute for Sustainable Plant ProtectionBari UnitCNRBari 70126Italy

Viruses are the most abundant biological entities on Earth and the major carriers of disease and mortality as well as the drivers of global *** plant viruses potentially influence global processes is an emergent issue,particularly for their putative implications in *** infection and spread,plant viruses are capable of reprogramming host gene expression via RNA silencing by releasing viral suppressors of RNA silencing,viral small interfering RNAs(vsiRNAs),and by inducing the production of viral-associated small interfering RNAs(va-siRNAs).Recently,studies on various crop-virus pathosystems suggest that RNA silencing suppressors(RSSs)。

关键词： immunity mortality releasing

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Helicobacter pylori vs coronary heart disease-searching for connections

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World Journal of Cardiology 2015年第4期7卷 187-203页

作者： Magdalena Chmiela Adrian Gajewski Karolina Rudnicka department of Immunology and Infectious biology Faculty of Biology and Environmental ProtectionUniversity of Lódz

In this review,we discussed the findings and concepts underlying the potential role of Helicobacter pylori(***) infections in the initiation,development or persistence of atherosclerosis and coronary heart disease(CHD).This Gram-negative bacterium was described by Marshall and Warren in *** majority of infected subjects carries and transmits *** with no symptoms; however,in some individuals these bacteria may cause peptic ulcers,and even gastric *** widespread prevalence of *** infections and the fact that frequently they remain asymptomatic may suggest that,similarly to intestinal microflora,*** may deliver antigens that stimulate not only local,but also systemic inflammatory ***,possible association between *** infection and extragastric disorders has been *** on the etiology of atherosclerosis together with current findings in the area of *** infections constitute the background for the newly proposed hypothesis that those two processes may be *** research studies confirm the indirect association between the prevalence of *** and the occurrence of *** to majority of findings the involvement of *** in this process is based on the chronic inflammation which might facilitate the CHDrelated *** needs to be elucidated,if the infection initiates or just accelerates the formation of atheromatous plaque.

关键词： Helicobacter pylori Coronary heart disease Inflammation Microbiota Lipopolysaccharide

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Plant immune receptors can sequester and protect host proteins from pathogen-promoted degradation

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Molecular Plant 2023年第6期16卷 966-967页

作者： Dmitry Lapin Translational Plant biology Department of BiologyInstitute of Environmental BiologyUtrecht UniversityPadualaan 83584 CH Utrechtthe Netherlands

Genetically controlled broad-spectrum disease resistance is a highly desired trait for crop *** allows us to reduce the use of pesticides in the field and helps to streamline the development of new *** than 100 loci are known to control the resistance of rice(Oryza sativa)to the devastating fungal blast disease caused by Magnaporthe *** of these loci are effective against a small set of pathogen isolates,while others protect against a broader range of pathogen variants(Ning et al.,2020).

关键词： sativa Oryza trait

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Role of TRP channels and HSPs in thermal stress response in the aphid parasitoid Aphelinus asychis(Hymenoptera:Aphelinidae)

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Journal of Integrative Agriculture 2020年第6期19卷 1530-1542页

作者： LIU Xiang KANG Zhi-wei YU Xing-lin LI Fan LIU Tong-xian LI Qiang department of Entomology College of Plant ProtectionYunnan Agricultural UniversityKunming 650000P.R.China State Key Laboratory of crop Stress biology for Arid Areas/Key Laboratory of Northwest Loess Plateau crop Pest Management of Ministry of Agriculture and Rural Affairs Northwest A&F UniversityYangling 712100P.R.China

Aphelinus asychis is an important aphid *** field and greenhouse conditions,high temperature is one of the factors limiting the application of A asychis for biological pest *** explore the potential role of transient receptor potential(TRP)channels and heat shock proteins(HSPs)in this process,we identified 11 genes encoding TRP channels and nine genes encoding *** proteins(AasyTRPA5,AasyPyrexia,AasyPainless)that belong to transient receptor potential ankyrin(TRPA)subfamily and nine HSPs are involved in the response to high *** also investigated the survival of A asychis and the response of the identified TRP channels and HSPs to high *** results showed that the maximum temperature that allowed *** survival was approximately 41°C;females had higher survival rates than that of the males at 40 and 41°***-term heat-shock resulted in increased expression of Amsysbsp in males,and Aasyhsp40,Aasyhsp68,Aasyhsp70-4,Aasyhsp70-5 and Aasyhsp90 were upregulated and then down regulated,whereas Aasyhsp70-3was upregulated at41°***,Aasyhsp40and Aasyhsp90showed higherexpression levels in females,while Aasyshsp and Aasyhsp70-3 presented opposite expression *** temperature above 35°C,expression of AasyPyrexia in females was significant higher than that in males,whereas AasyPainless mnd AasyTRPA5 presented higher expression in males at 40 and 41°C,***,these results indicate that protect!on against thermal stress in *** is coordinated by TRP channels and *** findings provide a basis for understanding the potential mechanism of A asychis in response to high temperatures.

关键词： Aphelinus asychis TRP channels heat-shock proteins thermal stress gene expression

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Nutrient alterations following biochar application to a Cd-contaminated solution and soil

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Biochar 2021年第4期3卷 457-468页

作者： Liqiang Cui James A.Ippolito Matt Noerpel Kirk G.Scheckel Jinlong Yan School of environmental Science and Engineering Yancheng Institute of TechnologyNo.211 Jianjun RoadYancheng 224003China department of Soil and crop Sciences Colorado State UniversityFort Collins 80523USA Center for environmental Solutions and Emergency Response Land Remediation and Technology DivisionUnited States Environmental Protection AgencyCincinnatiOH 45224-1701USA

Biochars,when applied to contaminated solutions or soils,may sequester potentially toxic elements while releasing neces-sary plant *** purpose of this study focused on quantifying both phenomenon following wheat straw(Triticum aestivum L.)biochar application(0,5,and 15%by wt)to a Cd containing solution and a Cd-contaminated paddy soil using 240-day laboratory batch *** both experiments,solid phases were analyzed for elemental associations using a combination of wet chemical sequential extractions and synchrotron-based X-ray absorption spectroscopy(XAS).When wheat straw biochar was applied at 15%to Cd containing solutions,Cd and Zn concentrations decreased to below detection in some instances,Ca and Mg concentrations increased by up to 290%,and solution pH increased as compared to the 5%biochar application *** responses were observed when biochar was added to the Cd-contaminated paddy soil,suggesting that this particular biochar has the ability to sequester potentially toxic elements while releasing necessary plant nutrients to the soil *** significant,positive correlations existed between nutrient release over time,while negative correlations were present between biochar application rate,potentially toxic element sorption and *** latter suggests that potentially toxic elements were sorbed by a combination of organic functional groups or mineral precipitation based on whether pH was above or below~*** support of this contention,the wet chemical sequential extraction procedure in conjunction with previously observed Cd or current Zn XAS showed that biochar application promoted the formation of layered double hydroxides,sorption to(oxy)hydroxides,and organically bound to biochar as Zn *** a multi-functional material,biochar appears to play an important role in sequestering Cd while releasing essential plant *** findings suggest that biochar may be a‘win-win’for improving environmental quality in pot

关键词： Biochar Cadmium Nutrient availability Sequential extraction procedure X-ray absorption spectroscopy Zinc

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Protecting wild yak (Bos mutus) species and preventing its hybrid in China

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Journal of Arid Land 2016年第5期8卷 811-814页

作者： WANG Shengli NAN Zhongren Daniel PRETE Gansu Key Laboratory for environmental Pollution Prediction and Control College of Earth and Environmental SciencesLanzhou University department of Chemistry and biology Ryerson University

China has made efforts to protect wild yak （Bos mutus） species and prevent the hybrids between wild yak and domestic yak （Bos grunniens） *** present,wild yak population of a reasonable estimate would be over 70,*** to conservation efforts in environmental protection and ecological construction such as the Wildlife protection and Nature Reserve Construction Project,the ＂Grain-for-Green＂ Project and the Natural Forest Resources protection Project,the number of wild yaks is *** general,Tibetan Plateau＇s ecosystem is getting better and its environmental quality shows a gradual improving *** Plateau is one of the world＇s cleanest regions called as the ＂Third Pole＂.In order to preserve the genetic pool of wild yaks,local pastoralists and polices drive off the wild male yaks from the domestic yak herds by making noise （banging washbasins,pots,etc.） or driving *** government also incentivizes the culling of domestic yaks found in wild *** the sake of the biological and genetic features of this wild species,and the pastoralist way of life,wild yaks should continuously be protected to keep their genetic *** appeal plans to investigate the gene pollution of wild yaks in some important distribution regions of this *** the face of hybridizing with domestic yaks,proper guidance is urgently needed to address genetic pollution and protect the genetic integrity of wild yaks.

关键词： wild and domestic yaks habitat competition genetic integrity genetic pollution pastoralists migration Altun Mountain National Nature Reserve Tibetan Plateau

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Auxin response factor gene MdARF2 is involved in ABA signaling and salt stress response in apple

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Journal of Integrative Agriculture 2022年第8期21卷 2264-2274页

作者： WANG Chu-kun ZHAO Yu-wen HAN Peng-liang YU Jian-qiang HAO Yu-jin XU Qian YOU Chun-xiang HU Da-gang National Key Laboratory of crop biology/Shandong Collaborative Innovation Center of Fruit&Vegetable Quality and Efficient Production College of Horticultural Science and EngineeringShandong Agricultural UniversityTai’an 271018P.R.China State Key Laboratory of crop Stress biology for Arid Areas College of Plant ProtectionNorthwest A&F UniversityYangling 712100P.R.China State Key Laboratory of crop biology College of AgronomyShandong Agricultural UniversityTai’an 271018P.R.China

Auxin response factors(ARFs)play key roles throughout the whole process of plant growth and development,and mediate auxin response gene transcription by directly binding with auxin response elements(AuxREs).However,their functions in abiotic stresses are largely limited,especially in ***,the auxin response factor gene MdARF2(HF41569)was cloned from apple cultivar‘Royal Gala’(Malus×domestica Borkh.).Phylogenetic analysis showed that ARF2 proteins are highly conserved among different species and MdARF2 is the closest relative to PpARF2 of Prunus persica,but they differ at the DNA ***2 contains three typical conserved domains including the B3 DNAbinding domain,Auxin_resp domain and AUX_IAA *** subcellular localization demonstrated that MdARF2 is localized in the *** three-dimensional structure prediction of the proteins showed that MdARF2 is highly similar with AtARF2,and they contain helices,folds,and random *** promoter of MdARF2 contains cis-acting elements which respond to various stresses,as well as environmental and hormonal *** analysis showed that MdARF2 is widely expressed in all tissues of apple,with the highest expression of MdARF2 in *** analysis with a series of MdARF2 transgenic apple calli indicated that MdARF2 can reduce the sensitivity to ABA signaling and enhance salt tolerance in *** summary,the results of this research provide a new basis for studying the regulation of abiotic stresses by ARFs.

关键词： ABA signaling apple MdARF2 salt stress

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Exchange of Proton and Major Elements in Two-Layer Canopies Under Acid Rain in a Subtropical Evergreen Forest in Central-South China

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Journal of Integrative Plant biology 2006年第10期48卷 1154-1162页

作者： Gong Zhang Guang-Ming Zeng Yi-Min Jiang Chun-Yan DU Guo-He Huang Mei Zeng Xiao-Kang Su Ren-Jun Xiang College of environmental Science and Engineering Hunan University Changsha 410082 China Hunan Province environmental protection Bureau Changsha 410076 China department of environmental Engineering Central-South University Changsha 410083 China Hunan Research Academy of environmental Sciences Changsha 410004 China

Canopy exchanges of H^＋ and N （NH4^＋-N, NO3^--N） and other major ions were evaluated and quantified In twolayer canopies based on throughfall measurements in Shaoshan Forest during the period 2000-2002, central-south China, The collected annual rainfall, throughfall, and sub-throughfall were 1 401, 1 191, and 1 084 mm/year, respectively. Fifteen percent and 8% of rainfall （or 9% of throughfall） were intercepted by the top canopy and sub-canopy layers, respectively, The foliar leaching of base cations from the top canopy was significantly higher than that from the sub-canopy, and the latter accounted for 25% of the former. The uptake of H^＋ and NH4^＋ was significantly higher in the top canopy than in the sub-canopy, indicating that the canopy buffering capacity in the top canopy was stronger than the sub-canopy; Mg^2＋ can be absorbed from water flux on the sub-canopy foliar surfaces to compensate for the Mg deficit in the forest soil during the growing season,

关键词： base cations canopy leaching nitrogen throughfall uptake

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