检索结果-南通市图书馆

Effects of Three Plant Powders on Behaviour, Mortality and Reproductive Fitness of Callosobruchus maculatus (Fabricius) (Coleoptera: Bruchidae)

引用

Zoological Research 2005年第6期26卷 603-608页

作者： T.I.OFUYA j.M.OSADAHUN Department of Crop Soil and Pest Managementthe Federal University of TechnologyP.M.B.704AkureNigeria

The effects of powders from dry flower buds of Eugenia aromatica Baill., seeds of Piper guineense Schum and Thonn and fruits of Capsicum frutescens L. on adult behaviour, mortality and reproductive fitness of the cowpea seed beetle, Callosobruchus maculatus (Fab.) were investigated under ambient laboratory conditions. All experiments were carried out in glass Petri plates. All powders elicited aversion in adult beetles. The contact toxicity symptoms included restlessness, loss of coordination, knock down and eventual death of adult beetles. These behaviours were more pronounced with E. aromatica in which adult beetles died within 16 hours. P. guineense and C. frutescens powders did not cause 100% mortality of adult beetles, even after 24 hours. Each of the three powders significantly (P<0.05) reduced the mating competition of adult males after sub-lethal exposure for one, two, and three hours, respectively. E. aromatica powder caused more reduction in male mating competition for females than any of the other two powders after each period of exposure. Receptiveness of treated females to courting males was also decreased by exposure to any of the three powders. Similarly, E. aromatica powder caused greater decreases in female receptiveness to males than any of the other two powders after each period of exposure. Exposure of either adult male or female C. maculatus to the powders for sub-lethal times of three, six and nine hours significantly reduced the fecundity of the beetles. E. aromatica powder caused the most reduction of eggs laid and also significantly reduced fertility of the eggs.

关键词： Callosobruehus maculatus Plant powder Behaviour Mortality Reproductive fitness

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 Mitochondrial Dysfunction on Carbon Metabolism and Gene Expression in flower Tissues of Arabidopsis thaliana

引用

Molecular Plant 2011年第1期4卷 127-143页

作者： Maria V. Busi Maria E. Gomez-Lobato Sebastian P. Rius Valeria R. Turowski Paula Casati Eduardo j. Zabaleta Diego F. Gomez-Casati Alejandro Araya Instituto de Investigaciones Biotecnologicas-lnstituto Tecnologico de ChascomOs (IIB-INTECH) CONICET/UNSAM Chascomus Argentina Centro de Estudios Fotosinteticos y Bioquimicos (CEFOBI) Universidad Nacional de Rosario Argentina Instituto de Investigaciones Biologicas liB CONICET-Universidad Nacional de Mar del Plata Argentina Microbiologie Cellulaire et Moleculaire et Pathogenicite UMR 5234 Centre National de la Recherche Scientifique and Universite Victor Segalen-Bordeaux 2 Bordeaux France

We characterized the transcriptomic response of transgenic plants carrying a mitochondrial dysfunction induced by the expression of the unedited form of the ATP synthase subunit 9. The u-ATP9 transgene driven by A9 and APETALA3 promoters induce mitochondrial dysfunction revealed by a decrease in both oxygen uptake and adenine nucleo- tides （ATP, ADP） levels without changes in the ATIP/ADP ratio. Furthermore, we measured an increase in ROS accumulation and a decrease in glutathione and ascorbate levels with a concomitant oxidative stress response. The transcriptome analysis of young Arabidopsis flowers, validated by qRT-PCR and enzymatic or functional tests, showed dramatic changes in u-ATP9 plants. Both lines display a modification in the expression of various genes involved in carbon, lipid, and cell wall metabolism, suggesting that an important metabolic readjustment occurs in plants with a mitochondrial dysfunction. Interestingly, transcript levels involved in mitochondrial respiration, protein synthesis, and degradation are affected. More- over, the levels of several mRNAs encoding for transcription factors and DNA binding proteins were also changed. Some of them are involved in stress and hormone responses, suggesting that several signaling pathways overlap. Indeed, the tran- scriptome data revealed that the mitochondrial dysfunction dramatically alters the expression of genes involved in signaling pathways, including those related to ethylene, absicic acid, and auxin signal transduction. Our data suggest that the mitochondrial dysfunction model used in this report may be useful to uncover the retrograde signaling mechanism between the nucleus and mitochondria in plant cells.

关键词： Electron transport transcriptome analysis Arabidopsis.

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

Mediation of flowering by a calmodulin-dependent protein kinase

引用

Science China(Life Sciences) 2001年第5期44卷 506-512页

作者：梁述平汪杏芬吕应堂 Lewis j.Feldman Key Laboratory of MOE for Plant Developmental Biology Wuhan University Wuhan 430072 China

A calmodulin-dependent protein kinase (MCK1) appeared important in regulating flowering in tobacco. The expression of modified MCK1 that lacks the C-terminal including calmodulin-binding domain upsets the flowering developmental program, leading to the abortion of flower primordia initiated on the main axis of the plant and, as well, caused the prolongation of the vegetative phase in axillary buds. The abortion process of flowers began first in the developing anthers and subsequently the entire flower senesces. In axillary buds the prolonged vegetative phase was characterized by atypical elongated, narrow, twisted leaves. These results suggested a role for calmodulin-dependent protein kinase homologs in mediating flowering.

关键词： calmodulin-dependent protein kinase transgenic tobacco flower.

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

Identifi cation of AFLP Makers Linked to Early-Bearing Gene in Walnut

引用

分子植物育种 2007年第2期5卷 266-268页

作者： j.X. Niu　 L. Wang　 Y.X. Dai　 R. Li X.K. Yang 　j.Q. Lv Department of Horticulture Shihezi University Shihezi 832003 China

Amplified fragment length polymorphism (AFLP), a novel DNA fingerprinting technique based on polymerase chain reaction (PCR) with high discriminatory power, has the advantages of high effi ciency, rapidness, re-

关键词：胡桃基因研究分子标记植物性状

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

中国喜马拉雅竹子开花、干旱和太阳黑子的历史

引用

竹子学报 1987年第1期 1-15页

作者： j.j.N.康贝尔美国肯塔基大学生物科学院

基于竹子开花标本、分类纪录及一些未经证实的文献,用时间换算法检验开花周期、干旱周期和太阳黑子最大值出现周期等,得出以下结果: 1.从1580年以来,中国的干旱周期是22年,与印度极端干旱周期相接近;洪水周期为39年,与印度的洪水周期更... 详细信息

基于竹子开花标本、分类纪录及一些未经证实的文献,用时间换算法检验开花周期、干旱周期和太阳黑子最大值出现周期等,得出以下结果: 1.从1580年以来,中国的干旱周期是22年,与印度极端干旱周期相接近;洪水周期为39年,与印度的洪水周期更为接近。中国竹子群体开花在干旱期间或干旱后两年中非常频繁地发生。四川在1942—1962年是湿润期,这时竹子群体开花则少见。 2.1870年以后,在喜马拉雅西部出现的干旱周期为33年,与当地总的竹子开花周期相同,但其谐波曲线不同。全部开花都在干旱后1—5年中发生,14种竹子群体开花都发生在这些年份。喜马拉雅东部的竹子群体开花在极端干旱后1—2年中发生。 3.有几个喜马拉雅东部地区的竹子开花,集中在太阳黑子平均11年与22年循环最盛期与最弱期(见表1)。一般来说,这种周期比竹子本身内部开花周期为弱,尽管这种关系的机理还有待于发现。月亮轨迹交点的运行周期为18.6年,它与竹子开花周期关系尚不得而知,但鉴于喜马拉雅东部竹子群体开花周期为20年弱,两者的关系应加以考虑。 4.1901—1976年,在构成中国西藏地震带的主要地区——四川与云南的6次大地震中,出现明显的22年周期。最近收集的资料表明:地震与太阳黑子在北极区的最大值前的最小值有关,以及与中国扬子江流域的干旱年份及竹子开花期有关。在每年地震3次以上的5年期间,与每年地震1次以下的相同年份比较,竹子开花次数要高3.9倍。

关键词：竹子年份竹子研究汇刊喜马拉雅太阳黑子中华人民共和国

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Fruit Setting Behaviour of Passion Fruit

引用

American journal of Plant Sciences 2013年第5期4卷 1066-1073页

作者： Mira Rani Das Tofazzal Hossain M. A. Baset Mia j. U. Ahmed A. j. M. Sirajul Kariman M. Mofazzal Hossain Agriculture Training Institute Gazipur Bangladesh Department of Crop Botany Bangabandhu Sheikh Mujibur Rahman Agri- cultural University Gazipur Bangladesh Department of Horticulture Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh. Department of Soil Science Bangabandhu Sheikh Mujibur Rahman Agricultural Uni- versity Gazipur Bangladesh

Passion fruit has great prospective to fascinate fruit consumer for its taste and delicious fruit juice and improvement of the economic condition of the fruit grower in the developing countries. The self-incompatibility in the passion fruits is an imperative reason to be considered regarding fruit production. Pollination is an essential for self-sterile crops as passion fruit (Passiflora edulis Sims.). The experiment was conducted in the field and laboratories of the Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur, Bangladesh to investigate the fruit setting behavior of passion fruits at during five flashes. We estimated to study fruit setting behavior of passion fruit at different flashes and determine effective pollination method and suitable flashes among five flashes. Result revealed that percent of fruit set of passion fruit was recorded highest;Seeds per plant were recorded highest in third flash when flowers were pollinated by hand compared with self-, and natural pollinations. Length-breadth ratios of fruits in third flashes were recorded higher when pollinates by hand. Individual fruit weight was also recorded higher at third flash. Plants required minimum days from flower anthesis to full maturity during third flash. On the other hand, fruit growth behavior of hand pollinated flowers was recorded higher during third flash of passion fruit. Results indicated that all studied characteristics of fruit and seed of passion fruit of third flash performed best.

关键词： Passion Fruit Fruit Setting Flash Pollination

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

Antifungal and Cytotoxic Activities of Biosynthesized Silver, Zinc and Gold Nanoparticles by flower Extract of <i>Rhanterium epapposum</i>

引用

Open journal of Applied Sciences 2020年第11期10卷 663-674页

作者： Mohammed S. j. Al Qhtani Samah A. El-Debaiky Mahmoud Sayed Department of Biology Faculty of Science King Khalid University Abha Saudi Arabia Department of Botany and Microbiology Faculty of Science Tanta University Tanta Egypt Department of Physics Faculty of Science King Khalid University Abha Saudi Arabia Department of Physics Faculty of Science Al Azhar University Assiut Egypt

This study was designed to prepare silver, zinc and gold nanoparticles (NPs), AgNPs, ZnNPs and AuNPs, by biosynthesis technique using methanolic extract of Rhanterium epapposum flowers using AgNO3, Zn (CH3CO2)2 and HAuCl4·3H2O as starting materials. The physical properties of the formed NPs were characterized by ultraviolet spectroscopy (UV), X-ray diffraction (XRD), transmission electron microscopy and Fourier transformed infrared spectroscopy (FTIR). The results revealed that, AgNPs were homogeneous and spherical in shape, with average diameter 16.3 nm. While, ZnNPs were approximately triangle and hexagonal shaped, with average diameter 23.5 nm. Most of the synthesized AuNPs were spherical in shape with average diameter 17.9 nm. The antifungal activity of different concentrations of the formed AgNPs, ZnNPs and AuNPs was tested against two human pathogens: Candida albicans and Aspergillus melleus

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

A community resource for exploring and utilizing genetic diversity in the USDA pea single plant plus collection

引用

Horticulture Research 2017年第1期4卷 293-300页

作者： William L.Holdsworth Elodie Gazave Peng Cheng james R.Myers Michael A.Gore Clarice j.Coyne Rebecca j.McGee Michael Mazourek Plant Breeding and Genetics Section School of Integrative Plant ScienceCornell UniversityIthaca14853NYUSA Department of Crop and Soil Sciences Washington State UniversityPullman99164WAUSA Department of Horticulture Oregon State UniversityCorvallis97331ORUSA US Department of Agriculture Agricultural Research ServiceWestern Regional Plant Introduction StationPullman99164WAUSA US Department of Agriculture Agricultural Research ServiceGrain Legume Genetics and Physiology Research UnitPullman99164WAUSA Rupp Seeds WauseonOH 43567USA

Globally,pea(Pisum sativum L.)is an important temperate legume crop for food,feed and fodder,and many breeding programs develop cultivars adapted to these *** order to assist pea development efforts,we assembled the USDA Pea Single Plant Plus Collection(PSPPC),which contains 431 *** accessions with morphological,geographic and taxonomic *** collection was characterized genetically in order to maximize its value for trait mapping and genomics-assisted *** that end,we used genotyping-by-sequencing—a cost-effective method for de novo single-nucleotide polymorphism(SNP)marker discovery—to generate 66591 high-quality *** data facilitated the identification of accessions divergent from mainstream breeding germplasm that could serve as sources of novel,favorable *** particular,a group of accessions from Central Asia appear nearly as diverse as a sister species,***,and subspecies,*** *** genotypes can be paired with new and existing phenotype data for trait mapping;as proof-of-concept,we localized Mendel’s A gene controlling flower color to its known *** also used SNP data to define a smaller core collection of 108 accessions with similar levels of genetic diversity as the entire PSPPC,resulting in a smaller germplasm set for research screening and evaluation under limited *** together,the results presented in this study along with the release of a publicly available SNP data set comprise a valuable resource for supporting worldwide pea genetic improvement efforts.

关键词： breeding cultivar utilizing

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

A Serratia marcesens Strains Involved in Cotton (<i>Gossypium hirsutum</i>) Boll Infection by a Prokaryote

引用

Agricultural Sciences 2021年第12期12卷 1565-1578页

作者： Enrique G. Medrano james P. Glover Alois A. Bell Michael j. Brewer Insect Control & Cotton Disease Research Unit United States Department of Agriculture-Agricultural Research Service (USDA-ARS) College Station TX USA Texas AgriLife Research and Extension Center Department of Entomology Texas A&M University Corpus Christi TX USA USDA-ARS Southern Insect Management Research Unit Stoneville MS USA

A boll infection caused by non-traditional cotton pathogens was first reported to occur in the southeastern U.S. Cotton Belt (year 2000) and has since spread to Texas causing significant yield losses. This study was aimed towards investigating the verde plant bug (Creontiades signatus) link between interior boll disease in Texas, USA. Using glasshouse grown bolls, bacteria recovered from locules with disease symptoms from field-grown cotton bolls caged with the piercing-sucking C. signatus were analyzed for the capacity to inflict the disease. For pathogenicity testing, spontaneously generated rifampicin resistant (Rifr) variants were utilized to track the antibiotic resistant bacterium and deter growth of endophytic and contaminating bacteria. To simulate C. signatus feeding, a needle (31 gauge) was employed to inoculate bolls at 13 - 15 days after flower bloom. Bacterial suspensions ranged from 101 - 106 colony forming units/ml. Field infection symptoms were duplicated after two weeks of bacterial exposure. Infectious strains were best categorized as Serratia marcescens based on traditional carbon utilization and enzyme production testing, and a 99% nucleotide sequence identity of 16S ribosomal DNA. Putative S. marcescens representatives isolated from rotted bolls exposed to C. signatus were shown to reproduce field infection symptoms upon inoculation into greenhouse grown fruit. Serratia spp. can inflict disease in alfalfa, cucurbits, and sunflower. The presented data are the first to definitively show that a Serratia sp. has the capacity to infect cotton.

关键词： Verde Plant Bug Opportunistic Bacterial Infections Antibiotic Selection Marker Cotton Boll Disease Piercing-Sucking Insects

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

The Roles of Plant Secondary Metabolites from Cowpea Floral Structures in Resistance to the flower Bud Thrips

引用

journal of Agricultural Science and Technology(A) 2011年第2X期1卷 262-269页

作者： O. Y. Alabi j. A. Odebiyi M. Tamo A. A. Omoloye Department of Crop Protection and Environmental Biology Entomology Unit University of lbadan P.M. B. 5320 Ibadan Nigeria International Institute of Tropical Agriculture Biocontrol Center Cotonou Republic of Benin

Floral structures of six cowpea （Vigna unguiculata） cultivars were analysed for secondary plant metabolites （polyphenols, terpenoids and flavonoids） to study their relationships with resistance to Megalurothrips sjostedti （Trybom）. Polyphenols varied significantly （P 〈 0.001） among the floral structures of the cultivars at the same growth stage. Significant negative correlations were obtained between polyphenols and damage indices （r = -0.57）, mean adult counts （r = -0.56） and mean larval counts （r = -0.64） of resistant cowpea cultivars especially in the late season, indicating that polyphenols play a significant role in cowpea resistance to M. sjostedti. High levels of polyphenols obtained from Sanzibanili and Sewe cultivars, coupled with highly significant correlations between the polyphenols and thrips population on resistant cultivars, and their damage indices, suggests that these polyphenols could be inhibitors or deterrents in this case. Terpenoid extracts （10 mg/mL） of IT90K-277-2, Sewe, Sanzibanili, TVu 1509 and KV - 404-8-1 racemes; KV ~ 404-8-I and TVu 1509 floral buds; IT90K-277-2, Sewe and Sanzibanili flowers caused significant （P 〈 0.001） larval mortalities, since mortality ranged between 56.7%-96.7%. Hence terpenoid extracts from floral structures of the cultivars are biologically active and confers antibiotic resistance to M. sjostedti larvae; this compound could be promising candidates for genetic transformation of cowpea cultivars.

关键词： Vigna unguiculata terpenoids flavonoids polyphenols Megalurothrips sjostedti.

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

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：