NBU Journal of Plant Sciences最新文献_第9页

Sea buckthorn and its microsymbiont-a review 沙棘及其微共生生物综述

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2011.v05i01.011

B. Basistha, Arnab Sen

{"title":"Sea buckthorn and its microsymbiont-a review","authors":"B. Basistha, Arnab Sen","doi":"10.55734/nbujps.2011.v05i01.011","DOIUrl":"https://doi.org/10.55734/nbujps.2011.v05i01.011","url":null,"abstract":"Hippophae sp. is a versatile plant restricted in distribution to the Himalayas having multipurpose usage including food, fodder, medicine, and controlling soil erosion. Besides, it plays a huge role in increasing the fertility of the soil by harboring symbiotic nitrogen fixing bacteria called Frankia. In this review we have looked into two main aspects of this symbiosis. First we have made a detailed account of the macrosymbiont i.e. Hippophae. Since Hippophae has food and medicinal properties and are widely used in cosmetic production, we excavated the antioxidant activity of various parts of Hippophae including fruits, seeds, bark and leaf. People of Indo-Tibetan plateau adapt a special agro-technique to cultivate Hippophae. The technique has been discussed here. A detail report of this plant including their distribution and various ecological parameters has also been done. On the other hand we have also elucidate about the microsymbiont present in root nodule of Hippophae i.e. Frankia. Frankia is filamentous actinomycetes which fix atmospheric nitrogen to the soil and therefore increase the soil-fertility. A detailed account of morphology. anatomy, phylogeny and ecology of Frankia has been illustrated here. The diversity of Frankia in soil is another interesting topic and the speciation of this bacterium is an everlasting controversy. We have given a closer look to the genetic diversity and phylogenetic relationships of Frankia at intra and inter generic level.","PeriodicalId":122617,"journal":{"name":"NBU Journal of Plant Sciences","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115454655","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

In-vitro free radical scavenging activities of the leaves of Malva verticillara L 马齿苋叶片体外自由基清除活性的研究

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2012.v06i01.008

P. Chhetri, P. Mandal

{"title":"In-vitro free radical scavenging activities of the leaves of Malva verticillara L","authors":"P. Chhetri, P. Mandal","doi":"10.55734/nbujps.2012.v06i01.008","DOIUrl":"https://doi.org/10.55734/nbujps.2012.v06i01.008","url":null,"abstract":"Antioxidants act as major defense against radical-mediated toxicity by protecting against the damages caused by free-radicals. Research on herbal products are increasingly focused on their effects on scavenging of different newly generated free-radical species and associated oxidative stress mediated complications on human health, but there are unexpectedly few studies evaluating the bioactivity of edible leafy vegetables of North Bengal, India. The purpose of the present study was to investigate the in vitro antioxidant potential of methanol extract and aqueous decoction of Malva verticillata L. [MV] leaves, consumed by local people of North Bengal. Extracts of leaves were analyzed for in vitro free radical scavenging capacity, the total phenol and flavonoid content and preliminary phytochemical analysis. The antioxidant property was estimated using reducing power, superoxide radical scavenging activity and DPPH assays. Methanol extract of leaves were found to be effective in DPPH and superoxide radical scavenging activity when compared with aqueous decoction of MV. Overall strong correlation between the mean values of total phenol content and IC50 values of DPPH and superoxide free radical scavenging capacity was observed. Principle Component Analysis (PCA) indicated that phenolic functional groups and reducing potential of methanol and aqueous extracts were mostly contributed for their antioxidant capacity. The present study revealed that methanol extract of the leaves of MV comprise effective source of natural antioxidants, which might be helpful in preventing the progress of various oxidative stress induced diseases.","PeriodicalId":122617,"journal":{"name":"NBU Journal of Plant Sciences","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124268746","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

Effect of cerium on seed germination and early seedling growth of wheat 铈对小麦种子萌发及幼苗生长的影响

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2011.v05i01.008

R. Shyam, N. Aery

引用次数: 3

Isolation and identification of a virulent Ralstonia solanacearum by fliC gene amplification and induction of chitinase by 2-amino butyric acid for control of bacterial wilt in tomato plants 利用fliC基因扩增和2-氨基丁酸诱导几丁质酶对番茄青枯病毒力的分离鉴定

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2013.v07i01.013

A. Saha, H. Mandal, D. Saha

{"title":"Isolation and identification of a virulent Ralstonia solanacearum by fliC gene amplification and induction of chitinase by 2-amino butyric acid for control of bacterial wilt in tomato plants","authors":"A. Saha, H. Mandal, D. Saha","doi":"10.55734/nbujps.2013.v07i01.013","DOIUrl":"https://doi.org/10.55734/nbujps.2013.v07i01.013","url":null,"abstract":"Ralstonia solanacearum is a devastating, soil borne bacterial pathogen of tomato. The pathogen is nonmotile in planta but highly motile in culture. On the basis of physiological and biochemical characteristics 26 isolates have been purified and identified as Ralstonia solanacearum. The flic gene is responsible for the movement of bacteria. Ralstonia specific fliC gene amplification is the indication of virulence of the pathogen. In the present study one R. solanacearum isolate has been identified by PCR amplification of the fliC gene using fliC gene specific primer. Following isolation and identification of the virulent isolate, fresh tomato plants were induced by application of 2- amino butyric acid (ABA). The defense enzyme, chitinase was estimated in treated plants. Treated inoculated plants did not show any visible symptoms of wilt even after 14 days of inoculation. Significantly it was observed that chitinase was increased in the 2-ABA-treated plants and also in the treated-inoculated plants. The increased chitinase activity in the treated plants showed that 2-ABA has the resistance inducing capacity in tomato plants against Ralstonia solanacearum.","PeriodicalId":122617,"journal":{"name":"NBU Journal of Plant Sciences","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123765703","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

Domestication of some wild edible plants in Barail range of Assam: a case study 阿萨姆邦Barail地区一些野生食用植物的驯化:一个案例研究

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2011.v05i01.009

K. Nath, P. Deka, D. Nath, S. Borthakur

引用次数: 0

Larger Fungi from the Pir Panjal Himalayan range in Poonch district of Jammu and Kashmir state, India 印度查谟和克什米尔邦Poonch区的Pir Panjal喜马拉雅山脉的大型真菌

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2015.v09i01.008

H. Kour, Y. Sharma, Sanjeev Kumar

引用次数: 0

Reactive oxygen species and environmental stresses 活性氧和环境胁迫

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2007.v01i01.003

U. Chakraborty

引用次数: 0

Pathogenesis-related proteins of tea triggered by Exobasidium vexans 茶胚外叶霉致病相关蛋白的研究

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2009.v03i01.011

Bodhisattwa Chakraborty, M. Sharma, R. Das Biswas, A. Ghosh

{"title":"Pathogenesis-related proteins of tea triggered by Exobasidium vexans","authors":"Bodhisattwa Chakraborty, M. Sharma, R. Das Biswas, A. Ghosh","doi":"10.55734/nbujps.2009.v03i01.011","DOIUrl":"https://doi.org/10.55734/nbujps.2009.v03i01.011","url":null,"abstract":"The defense strategy of tea plants against Exobasidium vexans are multifold and include accumulation of pathogenesis-related (PR) proteins. A study on the association of defense enzymes with resistance in tea plants triggered by E. vexans revealed significant changes in the level of β-1.3-glucanase (PR 2) and chitinase (PR 3) exhibiting antimicrobial activity. Accumulation of defense proteins differed in time and magnitude. Time course studies points towards accumulation of PR-2 and PR-3 in the early hours, PR-9 later on and finally the antifungal metabolites that confer resistance to the plants. Treatment with salicylic acid (SA) stimulates a multicomponent defense response in tea leaves which was confirmed by immuno-localization of PR 2 and PR 3 in tea leaf tissues following induction of resistance. Induction of PR-3 in suspension-cultured tea cells following SA treatment was confirmed immunologically using antibody probes (PAb-chitnase). Subcellular localization of PR-3 and PR-2 in tea leaves were also confirmed by indirect immunogold labeling. Marked increase in frequency of gold particles following elicitation by SA treatment was evident. Cell defense responses associated with systemic acquired resistance induced by SA against E.vexans has been discussed in relation to the possible role of PR-proteins in immunizing tea plants.","PeriodicalId":122617,"journal":{"name":"NBU Journal of Plant Sciences","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114813338","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

A conference report on 19th International Meeting on Frankia and Actinorhizal Plants 第19届法兰克与放线根植物国际会议报告

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2019.v11i01.008

I. Sarkar

引用次数: 0

Molecular modelling of a pathogenesis related protein from Solanum tuberosum 龙葵致病相关蛋白的分子模型研究

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2009.v03i01.003

S. Thakur, D. Bose, T. Mishra, R. Rai, M. Bhattacharya, Arnab Sen

引用次数: 0