检索结果-南通市图书馆

Heavy Metal Accumulation and Ecological Responses of Turfgrass to Rubbish Compost with EDTA Addition

Journal of Integrative Plant Biology 2005年第9期47卷 1047-1054页

作者： Li-An DUO Yu-Bao GAO Shu-Lan ZHAO college of Chemistry and life sciences Tianjin Normal University Tianjin 300074 China college of life sciences Nankai University Tianjin 300071 China

Domestic rubbish compost is a complex-polluted system, containing multiple heavy metals, which limits its application. In the present study, Cr, Mn, Ni, Cu, Zn, Cd, and Pb accumulation and ecological responses of turfgrass to rubbish compost were investigated following the addition of EDTA. The results showed that the addition of EDTA significantly increased heavy metal accumulation in Lolium perenne L. and Festuca arundinacea L. Most heavy metal concentrations in L. perenne increased with increasing EDTA supply. The concentrations of Cr, Mn, Ni, Cu, and Cd in L. perenne were highest following the addition of 30 mmol/kg EDTA and the concentrations of Cr and Ni at this point reached concentrations of 1 914.17 and 521.25 μg/g, respectively. When the EDTA level was 〈 20 mmol/kg, the accumulation of most heavy metals in F. arundinacea increased with increasing EDTA supply, but showed a tendency to decrease at EDTA concentrations 〉20 mmol/kg. The highest concentrations of Mn, Ni, Cu, and Zn in F. arundinacea reached 268.01, 110.94, 161.52 and 1 354.97 μg/g, respectively, following the addition of 20 mmol/kg EDTA. The EDTA-induced increase in the accumulation of heavy metals in turfgrass was plantand metal-specific. L. perenne had a relatively high ability to accumulate Cr, Ni, and Zn. The highest Zn concentration was 2 979.58 μg/g and, following the addition of EDTA, the concentrations of the three metals were increased 26.23, 20.03, and 10.49-fold, respectively, compared with control. However, F. arundinacea showed a high ability to accumulate Cr, with the highest concentration （596.02 μg/g） seen following the addition of 30 mmol/kg EDTA; the concentration of Cr increased 15.51-fold compared with control. With EDTA addition, ecological responses of both turfgrass species showed that EDTA at concentrations 〈10 mmol/kg increased seed germination and aboveground net primary production （ANP） of L. perenne and slightly inhibited those of F. arundinacea, but EDTA at concentra

关键词： accumulation domestic rubbish compost EDTA heavy metal remediation turfgrass.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Responses of greenhouse gas fluxes to experimental warming in wheat season under conventional tillage and no-tillage fields

引用

Journal of Environmental sciences 2017年第4期29卷 314-327页

作者： Chun Tu Fadong Li Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences University of Chinese Academy of sciences college of Resources and Environment University of Chinese Academy of Sciences

Understanding the effects of warming on greenhouse gas（GHG, such as N2O, CH4 and CO2 ）feedbacks to climate change represents the major environmental issue. However, little information is available on how warming effects on GHG fluxes in farmland of North China Plain（NCP）. An infrared warming simulation experiment was used to assess the responses of N2O, CH4 and CO2 to warming in wheat season of 2012–2014 from conventional tillage（CT） and no-tillage（NT） systems. The results showed that warming increased cumulative N2O emission by 7.7% in CT but decreased it by 9.7% in NT fields（p 〈 0.05）. Cumulative CH4 uptake and CO2 emission were increased by 28.7%–51.7% and 6.3%–15.9% in both two tillage systems,respectively（p 〈 0.05）. The stepwise regressions relationship between GHG fluxes and soil temperature and soil moisture indicated that the supply soil moisture due to irrigation and precipitation would enhance the positive warming effects on GHG fluxes in two wheat ***, in 2013, the long-term drought stress due to infrared warming and less precipitation decreased N2O and CO2 emission in warmed treatments. In contrast, warming during this time increased CH4 emission from deep soil depth. Across two years wheat seasons, warming significantly decreased by 30.3% and 63.9% sustained-flux global warming potential（SGWP） of N2O and CH4 expressed as CO2 equivalent in CT and NT fields, respectively. However, increase in soil CO2 emission indicated that future warming projection might provide positive feedback between soil C release and global warming in NCP.

关键词： Climate warming Greenhouse gas fluxes(N2O CH4 CO2) Conventional tillage No-tillage Soil temperature Soil moisture

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ca^(2+)-Calmodulin is Involved in Betacyanin Accumulation Induced by Dark in C_3 Halophyte Suaeda salsa

引用

Journal of Integrative Plant Biology 2007年第9期49卷 1378-1385页

作者： Chang-Quan Wang Bao-Shan Wang college of life sciences Shandong Normal University Jinan 250014 China college of life sciences Shandong University of Technology Zibo 255049 China

The C3 halophyte Suaeda salsa was used to investigate the roles of Ca^2＋, Ca^2＋ channels, and calmodulin （CAM） in betacyanin metabolism. Seeds of S. salsa were cultured in both the dark and light for 3 days. The fresh weight and betacyanin content were much higher in S. salsa seedlings formed in the dark than in seedlings formed in the light. The addition of Ca^2＋ to the half-strength MS nutrient solution promoted betacyanin accumulation in the dark, whereas Ca^2＋ depletion by EGTA suppressed the dark-induced betacyanin accumulation in shoots of S. salsa. The Ca^2＋ channel blocker LaCl3 also inhibited dark-induced betacyanin accumulation. The highest activity of CaM and the maximum betacyanin content decreased by 51% and 45%, respectively, in shoots of S. salsa seedlings treated with the potent CaM antagonist chlorpromazine in the dark. Furthermore, the other CaM antagonist N-（6-aminohexyl）-5-chloro-l-naphthalenesulfonamide （W-7） also inhibited the activity of CaM and dark-dependent betacyanin accumulation, whereas its less active structural analog N-（6-aminohexyl）- 1-naphthalenesulfonamide （W-5） had little effect on the responses to dark of S. salsa seedlings. These results suggest that Ca^2＋, Ca^2＋-regulated ion channels, and CaM play an important role in dark-induced betacyanin accumulation in the shoots of the C3 halophyte S. salsa.

关键词： betacyanin Ca^2+ calmodulin darkness Suaeda salsa.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

One new species of free-living marine nematodes (Enoplida,Anticomidae,Cephalanticoma) from the Huanghai Sea

引用

Acta Oceanologica Sinica 2007年第3期26卷 84-89页

作者： HUANG Yong ZHANG Zhinan college of Marine life sciences Ocean University of China Qingdao 266003 China college of life sciences Liaocheng University Liaocheng 252000 China

One new species of free-living marine nematodes Cephalanticomafilicaudata sp. nov. from the Huanghai Sea, China is described and illustrated. Cephalanticomafilicaudata sp. nov. is characterized by well developed cephalic capsule, three teeth at the anterior of oesophagus, excretory pore opens posterior to cervical setae, only two cervical setae per file, body length longer than 5 200 μm, tail long and no ventral-lateral seta between the supplement and the cloacal opening. Types are deposited in the college of Marine life sciences, Ocean University of China.

关键词： marine nematode new species Huanghai Sea

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Response of soil hydrological processes to soil rock fragments:A global Meta-analysis

引用

Science China Earth sciences 2023年第9期66卷 2066-2080页

作者： Yongwu WANG Qing ZHU Xiaoming LAI Kaihua LIAO Changqiang GUO Key Laboratory of Watershed geographic sciences Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China college of Nanjing University of Chinese Academy of SciencesNanjing 211135China

The rock fragment(RF)has been widely observed in the soil solum or on the soil *** regulates soil hydrological processes(SHPs)and thus has great impacts on soil and water ***,responses of SHPs to RF characteristics(position,content,coverage area,mulching thickness,and size)remain *** on the dataset extracted from 168 published studies,effects of RF characteristics on SHPs(soil loss rate,evaporation rate,surface runoff rate,infiltration rate,soil water content,and soil water storage)and saturated hydraulic conductivity(Ks)were discussed in this *** showed that RFs completely inserted into the soil solum(CO_INS)improved the Ks by 6.9%,runoff rate by 12.8%,and soil loss rate by 22.3%,while it reduced the evaporation rate by 30.7%,infiltration rate by 15.4%,and soil water content by 9.9%.With the RF content(kg kg−1)increasing,its effects on these SHPs were *** RFs resting on the surface and partially covering soil surface(PA_COV)improved the infiltration rate but reduced the evaporation rate by 36.9%,surface runoff rate by 25.4%,and soil loss rate by 59.3%.This in turn enhanced soil water content and ***,as the RF coverage(%in area)increasing,the cross-sectional area of water flow decreased,and thus the infiltration rate *** RFs completely mulch on the soil surface(CO_MUL)reduced the evaporation rate by 59.5%and infiltration rate by 76.5%but improved the soil water content and *** the infiltration rate,the effects of CO_MUL on SHPs were strengthened as mulch thickness(cm)*** RFs partially embedded into soil surface(PA_EMB)promoted surface runoff rate by 15.3%,soil loss rate by 34.7%,and soil water content by 24.3%,but reduce the infiltration ***,the surface runoff rate was reduced at high embedded coverage due to increased tortuosity of water *** addition,the RF size exerted weaker effects on SHPs than RF positions,content,coverage,and mulch *** findi

关键词： Critical zone Meta-analysis Soil hydrology Soil water Watershed

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Identification of a seed dormancy gene in soybean sheds light on crop domestication

引用

Science China(life sciences) 2018年第11期61卷 1439-1441页

作者： Xin Wei Xuehui Huang college of life sciences Shanghai Normal University

Crop domestication,usually referring to the process of genetic adaptation of wild plants to crops,had a profound influence on ***,it will have ramifications for future human *** domestication began at least 10,000 years ago at several domestication centers (Doebley et a1.,2006).More than 100 seed and fruit crops,such as maize,wheat,rice,soybean,and tomato,have been domesticated.

关键词： domestication crops soybean Crop

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Studies on the species composition and biodiversity of free-living marine nematodes in the southern Huanghai Sea

引用

Acta Oceanologica Sinica 2006年第2期25卷 87-98页

作者： HUANG Yong ZHANG Zhinan LIU Xiaoshou ZHANG Yan college of Marine life sciences Ocean University of China Qingdao 266003 China college of life sciences Liaocheng University Liaocheng 252000 China

Free-living marine nematodes were sampled and studied at a grid of 22 stations （from 32°29.35′ to 37°0.56′N, 122°0.37′ to 125°1.16′ E） in the southern Huanghai Sea in January 2003. Nematode abundance varied from 50.5 to 127.2 ind./cm^2 [（83.1 ±24.7） ind./cm^2] at different stations, 80.1% of the total nematodes were in the surface layer （0-2 cm） of sediments. Two hundred and twenty-three species or taxa of marine nematodes belonging to 145 genera, 32 families and four orders were identified and first recorded in the Huanghai Sea. The common dominant species were Dorylaimopsis rabalaisi, Terschellingia longicaudata, Sphaerolaimus bolticus, Metalinhomoeus longiseta, Quadricoma scanica, Prochromadorella sp., Paramonohystera riemanni, Marylynnia sp. 1, Vasostoma spircaum, Halalaimus spp., Pierrickia sp. 1 and Promonhystera faber. Nematode diversity was correlated with sediment granularity. Pearson correlation analysis showed that Shannon-Wiener index had highly significant positive correlation with a sand content and negative correlation with a silt-clay content （P〈0.01）; species richness index （d） had significant positive correlation with the sand content and negative correlation with the silt-clay content （P〈0.05）. The diversity of the southern Huanghai Sea was lower than that in the center of Bohai Sea, but the dominance was higher.

关键词： free-living marine nematode benthic ecology species composition biodiversity southern Huanghai Sea

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of Alexandrium tamarense on three bloom-forming algae

引用

Chinese Journal of Oceanology and Limnology 2010年第4期28卷 940-944页

作者：尹娟谢瑾杨维东李宏业刘洁生 college of life sciences and Technology Jinan University

We investigated the allelopathic properties of Alexandrium tamarense(Laboar) Balech on the growth of Prorocentrum donghaiense Lu,Chattonella marina(Subrahmanyan) Hara et Chihara and Heterosigma akashiwo(Hada) Hada in a laboratory *** examined the growth of ***,***,*** and *** in co-cultures and the effect of filtrates from *** cultures in various growth phases,on the three harmful algal bloom(HAB)-forming *** co-cultures with ***,both *** and *** were dramatically suppressed at high cell densities;in contrast,the growth of *** varied in different inoculative ratios of *** and *** the ratio was 1:1(***:***),growth of *** was inhibited considerably,while the growth of *** was almost the same as that of the control when the ratio was 9:*** growth difference of ***,*** and *** when co-cultured with *** indicated that the allelopathic effect may be one of the important factors in algal competition and phytoplankton succession involving *** addition,the filtrate from *** culture had negative impacts on these three HAB algae,and such inhibition varied with different growth phases of *** in parallel with reported values of PSP toxin content in Alexandrium *** implied that PSP toxin was possibly involved in allelopathy of ***,the rapid decomposition and inactivation of PSP toxin above pH7 weakened this *** studies on the allelochemicals responsible for the allelopathy of *** need to be carried out in future.

关键词： allelopathy Alexandrium tamarense PSP

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Generation and classification of transcriptomes in two Croomia species and molecular evolution of CYC/TB1 genes in Stemonaceae

引用

Plant Diversity 2018年第6期40卷 253-264页

作者： Ruisen Lu Wuqin Xu Qixiang Lu Pan Li Jocelyn Losh Faiza Hina Enxiang Li Yingxiong Qiu Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education and College of Life Sciences Zhejiang University college of life sciences Nanchang University

The genus Croomia(Stemonaceae) is an excellent model for studying the evolution of the Eastern Asia(EA)-Eastern North America(ENA) floristic disjunction and the genetic mechanisms of floral zygomorphy formation. In addition to the presence of both actinomorphic and zygomorphic flowers within the genus, species are disjunctively distributed between EA and ENA. However, due to the limited availability of genomic resources, few studies of Croomia have examined these questions. In this study,we sequenced the floral and leaf transcriptomes of the zygomorphic flowered Croomia heterosepala and the actinomorphic flowered Croomia japonica, and used comparative genomic approaches to investigate the transcriptome evolution of the two closely related species. The sequencing and de novo assembly of transcriptomes from flowers of C. heterosepala(ChFlower), flowers of C. japonica(CjFlower), and leaves of C. japonica(CjLeaf) yielded 57,193, 62,131 and 64,448 unigenes, respectively. In addition, estimation of Ka/Ks ratios for 11,566 potential orthologous groups between ChFlower and CjFlower revealed that only six pairs had Ka/Ks ratios significantly greater than 1 and are likely under positive selection. A total of 429 single copy nuclear genes(SCNGs) and 21,460 expression sequence tags-simple sequence repeats(ESTSSRs) were identified in this study. Specifically, we identified seven CYC/TB1-like genes from Stemonaceae. Phylogenetic and molecular evolution analyses indicated that these CYC/TB1-like genes formed a monophyletic clade(SteTBL1) and were subject to strong purifying selection. The shifts of floral symmetry in Stemonaceae do not appear to be correlated with TBL copy number.

关键词： Croomia Transcriptome SCNGs EST-SSRs Flower symmetry CYC/TB1

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Advanced glycation end products induce neural tube defects through elevating oxidative stress in mice

引用

Neural Regeneration Research 2018年第8期13卷 1368-1374页

作者： Ru-Lin Li Wei-Wei Zhao Bing-Yan Gao Laboratory for Development College of Life Sciences Northwest University

Our previous study showed an association between advanced glycation end products （AGEs） and neural tube defects （NTDs）. To understand the molecular mechanisms underlying the effect of AGEs on neural tube development, C57BL/6 female mice were fed for 4 weeks with com- mercial food containing 3% advanced glycation end product bovine serum albumin （AGE-BSA） or 3% bovine serum albumin （BSA） as a control. After mating mice, oxidative stress markers including malondialdehyde and H202 were measured at embryonic day 7.5 （E7.5） of ges- tation, and the level of intracellular reactive oxygen species （ROS） in embryonic cells was determined at E8.5. In addition to evaluating NTDs, an enzyme-linked immunosorbent assay was used to determine the effect of embryonic protein administration on the N-（carboxymethyl） lysine reactivity of acid and carboxyethyl lysine antibodies at E10.5. The results showed a remarkable increase in the incidence of NTDs at El0.5 in embryos of mice fed with AGE-BSA （no hyperglycemia） compared with control mice. Moreover, embryonic protein administration resulted in a noticeable increase in the reactivity of N-（carboxymethyl） lysine and N（ε）-（carboxyethyl） lysine antibodies. Malondialdehyde and H2O2 levels in embryonic cells were increased at E7.5, followed by increased intracellular ROS levels at E8.5. Vitamin E supplementation could partially recover these phenomena. Collectively, these results suggest that AGE-BSA could induce NTDs in the absence of hyperglycemia by an underlying mechanism that is at least partially associated with its capacity to increase embryonic oxidative stress levels.

关键词： nerve regeneration neural tube defects advanced glycation end products diabetic embryopathy oxidative stress N-(carboxymethyl)lysine malondiadehyde N(ε)-(carboxyethyl) lysine embryo H2O2 bovine serum albumin neural regeneration

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：