Cogent Biology最新文献_第4页

Rapid phenotyping for identification of rice resistant varieties to Diopsis apicalis (Diptera: Diopsidae) Westwood 水稻抗尖翅蝶蛾品种的快速表型鉴定

Cogent Biology Pub Date : 2019-01-01 DOI: 10.1080/23312025.2019.1649851

Bocco Roland, G. Bernard, Amoussou Pierre-Louis, T. Abou, Dieng Ibnou, Ndjiondjop Marie Noelle, S. Abdoulaye, T. Manuele

{"title":"Rapid phenotyping for identification of rice resistant varieties to Diopsis apicalis (Diptera: Diopsidae) Westwood","authors":"Bocco Roland, G. Bernard, Amoussou Pierre-Louis, T. Abou, Dieng Ibnou, Ndjiondjop Marie Noelle, S. Abdoulaye, T. Manuele","doi":"10.1080/23312025.2019.1649851","DOIUrl":"https://doi.org/10.1080/23312025.2019.1649851","url":null,"abstract":"Abstract Nineteen rice varieties were assessed against D. apicalis, under partially controlled environment in a screen-covered cage at AfricaRice-Benin. 20, 30, and 50 couples of insects per square meter per cage were released 20 days after sowing in a complete randomized block design. In a first mock-trial (without shade above the cages), no dead heart was observed. The symptoms appeared in the second trial with the addition of some palm tree branches on top of the cages, showing the importance of shade and humidity in the biology of diopsids. This trial was repeated twice including three repetitions, during the rainy and dry seasons in South Benin. The study showed that the percentage of infested plants increased with the number of released insects. Rice varieties TOG5681, RAM55, NERICA1, NERICA4, NERICA8, and CG14 were the most resistant whereas IR47, IR64, ITA306, and WAB56-104 were the most susceptible. Densities 20 and 30 couples of insects per square meter were the best for an efficient screening. The screen-covered cage made with local materials is a convenient way for national programs in developing countries to screen at a lower cost. This method is easy to implement, fast and can allow simultaneous testing of large inbred rice populations.","PeriodicalId":10412,"journal":{"name":"Cogent Biology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23312025.2019.1649851","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47909008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Genetic variation of Macrobrachium lanchesteri (De Man, 1911) in Northeastern Thailand 泰国东北部兰氏沼虾(De Man, 1911)的遗传变异

Cogent Biology Pub Date : 2019-01-01 DOI: 10.1080/23312025.2019.1677126

Rawikarn Khanarnpai, B. Thaewnon-ngiw, Bungon Kongim

{"title":"Genetic variation of Macrobrachium lanchesteri (De Man, 1911) in Northeastern Thailand","authors":"Rawikarn Khanarnpai, B. Thaewnon-ngiw, Bungon Kongim","doi":"10.1080/23312025.2019.1677126","DOIUrl":"https://doi.org/10.1080/23312025.2019.1677126","url":null,"abstract":"Abstract The freshwater prawn Macrobrachium lanchesteri is one of the most economically important and widely distributed species in Northeastern Thailand. However, few studies have investigated the genetic variation of these crustaceans. Water quality, morphometrics and genetic variation were determined for 1,219 individuals of M. lanchesteri from 11 provinces in Northeastern Thailand. Water quality analysis showed water temperature, pH, water hardness and dissolved oxygen as 25 to 33ºC, 6 to 9, 64 to 101 ml l−1 and 4 to 7.5 ml l−1 respectively. Water quality indicated that aquatic animals could live. Morphological characters showed total length as 1.5to 4.5 cm with M. lanchesteri mean length of females higher than males in all 11 provinces. M. lanchesteri from Nong Khai presented the largest size with Buri Ram mostly comprising the smallest. Genetic variation was determined using the PCR-RFLP technique with five restriction enzymes as Dde I, Alu I, Hinf I, Bgl II and Hae III. Results showed one composite haplotype when samples were digested with Dde I, Alu I, Hinf I, Bgl II and Hae III, respectively, as AAAAA. A total of 9 haplotypes were detected. Nucleotide sequencing analysis found low genetic variation in populations of M. lanchesteri in Northeastern Thailand ranged from 0 to 0.035. Phylogenetic tree (UPGMA) construction determined that the M. lanchesteri population constituted two clades which all populations closely related apart from one separate population. This study can be used as a guideline for selection of commercial cultures by shrimp breeders and may also be useful for shrimp conservation.","PeriodicalId":10412,"journal":{"name":"Cogent Biology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23312025.2019.1677126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46113038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Physicochemical surface characteristics in different pathogenic bacteria 不同病原菌的理化表面特征

Cogent Biology Pub Date : 2019-01-01 DOI: 10.1080/23312025.2019.1638572

Fariba Farniya, Ailar Jamalli, T. Dadgar

{"title":"Physicochemical surface characteristics in different pathogenic bacteria","authors":"Fariba Farniya, Ailar Jamalli, T. Dadgar","doi":"10.1080/23312025.2019.1638572","DOIUrl":"https://doi.org/10.1080/23312025.2019.1638572","url":null,"abstract":"Abstract Understanding physicochemical surface characteristics of microorganisms is vital in order to reduce or prevent bacterial adhesion as an important stage of pathogenicity. These characteristics are influenced by such factors as temperature, pH, or media determining the extent of bacterial adhesion. The present study adopted a simple technique, i.e. MATS (microbial adhesion to solvents) method, to better understand microbial cell surface characteristics in four different strains, namely Staphylococcus aureus, Listeria Monocytogenes, Escherichia coli, and Pseudomonas aeruginosa. For this aim, the effect of different concentrations of human blood serum in the media of these microorganisms on physicochemical characteristics of the microorganism was evaluated. The results revealed that the microorganisms possessed different characteristics at different doses of human blood serum. Some doses of human blood serum had no effect on hydrophobicity and electron donation and reception in the microorganisms whereas some doses could cause changes in these characteristics. These findings show that care should be taken when using different concentrations of antibiotics or other compounds such as rhamnolipids.","PeriodicalId":10412,"journal":{"name":"Cogent Biology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23312025.2019.1638572","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46019266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Correction 修正

Cogent Biology Pub Date : 2019-01-01 DOI: 10.1080/23312025.2019.1620020

引用次数: 0

In vitro characterization of chemokine-loaded liposomes. 趋化因子负载脂质体的体外表征。

Cogent Biology Pub Date : 2019-01-01 Epub Date: 2019-09-11 DOI: 10.1080/23312025.2019.1662931

Angel J Rubio, Xuemei Zhong, Tyrone M Porter

引用次数: 1

Correction 修正

Cogent Biology Pub Date : 2019-01-01 DOI: 10.1080/23312025.2019.1613326

引用次数: 0

Dioscorea bulbifera, a highly threatened African medicinal plant, a review 非洲高度濒危药用植物黄薯蓣的研究进展

Cogent Biology Pub Date : 2019-01-01 DOI: 10.1080/23312025.2019.1631561

Hilda Ikiriza, P. Ogwang, E. Peter, Okella Hedmon, C. Tolo, Muwonge Abubaker, A. A. Abdalla

{"title":"Dioscorea bulbifera, a highly threatened African medicinal plant, a review","authors":"Hilda Ikiriza, P. Ogwang, E. Peter, Okella Hedmon, C. Tolo, Muwonge Abubaker, A. A. Abdalla","doi":"10.1080/23312025.2019.1631561","DOIUrl":"https://doi.org/10.1080/23312025.2019.1631561","url":null,"abstract":"Abstract Dioscorea bulbifera bulbils are used in the treatment of Piles, dysentery, syphilis, ulcers, cough, leprosy, diabetes, asthma, and cancer. It is a raw material for contraceptives, and it is one of the most consumed yam species especially in West Africa. Unfortunately, this plant is at the verge of extinction because of increased harvest for medicinal purpose. This review aims at providing up-to-date information about its photochemistry, clinical benefits, conservation status and best possible way on how this plant can be conserved for future use. Literature database search was employed, and the findings indicate that much as Dioscorea bulbifera is of diverse clinical and ethnomedicinal benefits, it’s vulnerable to extinction. In order to conserve Dioscorea bulbifera, there is a need to enlighten the local inhabitants on its clinical and commercial importance and uses. Also for the sustainable growth of the plant, the government and Non-governmental agencies have to distribute Dioscorea bulbils to the farmers for planting and also encourage its planting back into the wild. In addition, micropropagation of the D. bulbifera will be the perfect tool for re-establishing the plant in the natural habitat with more advantages of improving growth conditions of the plants.","PeriodicalId":10412,"journal":{"name":"Cogent Biology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23312025.2019.1631561","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42901721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 22

Allelopathic effect of stressing sorghum on weed growth 高粱胁迫对杂草生长的化感作用

Cogent Biology Pub Date : 2019-01-01 DOI: 10.1080/23312025.2019.1684865

H. Tibugari, Ngonidzaishe Manyeruke, Gerald Mafere, Murawu Chakavarika, Lovemore Nyamuzuwe, Pelagia Marumahoko, R. Mandumbu

引用次数: 5

Does exercising at a certain time-of-day affect athletes skeletal muscle damage markers? A systematic review and meta-analysis 在一天中的某个时间运动是否会影响运动员骨骼肌损伤指标?系统回顾和荟萃分析

Cogent Biology Pub Date : 2019-01-01 DOI: 10.1080/23312025.2019.1670529

Efrem Kentiba, Argachew Adane, Mezgebe Mena, Zerihun Zekarias, Zenebech Abera, Adanech Gosaye, Tsegaye Tsemiru, Fanta Aregahagn, Tadesse Gizachew

{"title":"Does exercising at a certain time-of-day affect athletes skeletal muscle damage markers? A systematic review and meta-analysis","authors":"Efrem Kentiba, Argachew Adane, Mezgebe Mena, Zerihun Zekarias, Zenebech Abera, Adanech Gosaye, Tsegaye Tsemiru, Fanta Aregahagn, Tadesse Gizachew","doi":"10.1080/23312025.2019.1670529","DOIUrl":"https://doi.org/10.1080/23312025.2019.1670529","url":null,"abstract":"Abstract The objective of the study was to examine time of day effects of exercise on athletes’ skeletal muscle damage markers. The skeletal muscle damage marker enzymes like creatine kinase, lactate dehydrogenase, aspartate aminotransferase and alanine aminotransferase are the markers of the functional status of muscle tissue and vary widely with pathological and physiological conditions. 2212 potential citations were identified through PubMed, MEDLINE, SPORTDiscus, EMBASE and Google Scholar searches. Based on the eligibility criteria, 10 studies were included for analysis. Heterogeneity test (I2), Effect Size (ES) and Standardized Mean Differences (Std. MD) for time of day results were calculated at 95% CI and 5% alpha-level for each study. The protocol is registered in PROSPERO with registration number (PROSPERO 2018: CRD42018112116). Using a random effect model, the overall pooled time of day effect of exercise were, SMD = −1.82 (95%CI, -2.69, -0.95;P < 0.001) and (I2 = 76%) for lactate dehydrogenase, SMD = −1.44 (95%CI, -2.43, -0.46;P < 0.004) and (I2 = 74%) for creatine kinase, SMD = −1.89 (95%CI, -2.49, -1.30;P < 0.001) and (I2 = 22%) for aspartate aminotransferase, SMD = −0.73 (95%CI, -1.39, -0.07;P < 0.03) and (I2 = 56%) for alanine aminotransferase, SMD = −1.46 (95%CI, -1.94, -0.98;P < 0.001) and (I2 = 41%) for white blood cells (WBC). Our study partly confirms the diurnal variations of skeletal muscle damage markers and recommends conducting further meta-analysis to investigate the concomitant effect of exercise and time-of-day variations in relation to hormonal, core temperature and oxidative responses. The results obtained from our study may help athletes, active individuals, team physicians and coaches to consider these markers and protect the physicians from misinterpreting abnormal values when evaluating the training level of their athletes.","PeriodicalId":10412,"journal":{"name":"Cogent Biology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23312025.2019.1670529","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49082892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Complete mitochondrial genome of the Malagasy poison frog Mantella baroni through RNAseq 马达加斯加毒蛙Mantella baroni的RNAseq线粒体全基因组研究

Cogent Biology Pub Date : 2019-01-01 DOI: 10.1080/23312025.2019.1679327

Y. Richard, D. Vieites, F. Ratsoavina

{"title":"Complete mitochondrial genome of the Malagasy poison frog Mantella baroni through RNAseq","authors":"Y. Richard, D. Vieites, F. Ratsoavina","doi":"10.1080/23312025.2019.1679327","DOIUrl":"https://doi.org/10.1080/23312025.2019.1679327","url":null,"abstract":"Abstract Within the Malagasy endemic family of Mantellidae, the only completely sequenced mitochondrial genome (mitogenome) is that of Mantella madagascariensis. Yet, this genome has proven to be the largest among all vertebrates with 23 kbp in size, and shows a duplication of the tRNA methionine coding gene, a pseudogene of this same gene and a duplicated control region. In this study, we report the complete mitochondrial genome of Mantella baroni, the second mitogenome sequenced for the Mantellidae family. This genome sequence has been generated using next-generation sequencing technics performed on Illumina Hi-seq. The genome is 20,945 bp (21 kbp) in size with 13 protein-coding genes, 23 tRNA coding genes, 2 rRNA coding genes and 2 Control Regions (CR1 and CR2). This newly generated mitogenome shows duplication of the tRNA glycine coding gene (G1 and G2) and translocation of tRNA methionine coding gene M2 in the CR2. This gene organization is unique among anurans. Both M. baroni and M. madagascariensis mitogenomes are amongst the largest in vertebrates which might be related to their aposematism or their skin toxicity by alkaloid secretion. We also hypothesize that other Mantella species likely have large genomes, being not clear how the genome size and organization of mitochondria evolved in Malagasy frogs. Testing such a hypothesis require more mitogenome sequencing for Mantella and other representatives of the mantellid diversity. The mitogenome generated here will be useful for comparative genomic studies but also to answer the question on how mitogenomes evolved in the Mantellidae family.","PeriodicalId":10412,"journal":{"name":"Cogent Biology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23312025.2019.1679327","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46727392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0