检索结果-南通市图书馆

Effects of epichloë endophyte on antioxidant enzymes activities, photosynthesis and growth of three ecotypes of Elymus dahuricus

引用

Frontiers of Agricultural Science and Engineering 2018年第1期5卷 148-158页

作者： Yuping ZHANG Yanfei ZHOU Xingxu ZHANG Tingyu DUAN Zhibiao NAN State Key Laboratory of Grassland Agro-Ecosystem/College of Pastoral Agricultural Science and Technology Lanzhou UniversityLanzhou 730000China

Fungal endophytes of some cultivated grasses can increase plant performance and competitive abilities,especially under stress. Far less is known about the influence of epichlo? infections in wild populations of wild grasses. In this study, plants of three Elymus dahuricus ecotypes(WLS, QY and WTS) either infected with epichlo? endophyte(E+) or uninfected(E–) were grown in the field. The activities of the antioxidant enzymes ascorbate peroxidase, catalase, peroxidase and superoxide dismutase, and concentrations of H_2O_2 and malondialdehyde were examined in the leaves of E+ and E– plants. We also determined photosynthesis parameters,leaf blade and sheath carbohydrate concentration and plant growth parameters of both E+ and E– plants. E+ plants from the WLS and QY populations had significantly higher antioxidant enzyme activities and photosynthetic capability(P 0.05), and even displayed some negative effects on plant photosynthetic capability. Thus, endophyte infection significantly affected E. dahuricus antioxidant enzyme activities(P < 0.05), photosynthesis and growth capability,although, the effects varied with plant ecotypes.

关键词： antioxidant enzymes Elymus dahuricus epichloë fungal endophyte photosynthesis

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

Endophytic mediation of reactive oxygen species and antioxidant activity in plants:a review

引用

Fungal Diversity 2012年第3期54卷 1-10页

作者： Cyd E.Hamilton P.E.Gundel M.Helander K.Saikkonen MTT Agrifood Research Finland Plant Production ResearchFI-31600 JokioinenFinland IFEVA-CONICET-Faculty of Agronomy Buenos Aires University(UBA)Buenos AiresArgentina Section of Ecology Department of BiologyUniversity of Turku20014 TurkuFinland

Reactive oxygen species are in all types of organisms from microbes to higher plants and *** are by-products of normal metabolism,such as photosynthesis and respiration,and are responsive to abiotic and biotic *** evidence suggests reactive oxygen species play a vital role in programmed cell death,stress responses,plant defense against pathogens and systemic stress signaling in conjunction with antioxidant ***,we propose that reactive oxygen species and antioxidants,as both universal and evolutionarily conserved,are likely to play important role(s)in symbiotic *** support this hypothesis we review the root and foliar fungal endophyte literature specific to fungal-plant symbiotum production of reactive oxygen species and antioxidants in response to *** asymptomatic fungi can produce antioxidants in response to both biotic and abiotic stress when grown in culture as well as in *** addition,there is a growing but nascent literature reporting a significant impact of endophyte colonization on the antioxidant activity of colonized(E+)hosts when compared to uncolonized(E-)hosts,especially when exposed to *** we summarize general patterns emerging from the growing literature specific to antioxidant activity of endophytes in colonized hosts and bring up possible future research questions and *** consequences of changes in reactive oxygen species production and increased antioxidant activity in the symbiotum appear to be beneficial in many instances;but costs are also *** questions are:1)to what extent do antioxidants originating from the fungal endophyte mediate host metabolism,and thereby control host responses to endophyte colonization;(2)what role do fungal,plant,or symbiotum produced reactive oxygen species and antioxidants have in determining symbiotic outcome between extremes of pathogenicity and mutualism;and(3)what role if any,do the production of reactive oxygen speci

关键词： Endophyte Symbiosis Neotyphodium epichloë Mutualism Dark septate endophytes Antagonism Stress Pathogen

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 exploitation of epichloae endophytes for agricultural benefit

引用

Fungal Diversity 2013年第3期60卷 171-188页

作者： Linda J.Johnson Anouck C.M.de Bonth Lyn R.Briggs John R.Caradus Sarah C.Finch Damien J.Fleetwood Lester R.Fletcher David E.Hume Richard D.Johnson Alison J.Popay Brian A.Tapper Wayne R.Simpson Christine R.Voisey Stuart D.Card AgResearch Ltd Grasslands Research CentreTennent DrivePalmerston North 4442New Zealand AgResearch Ltd Ruakura Research CentreEast StreetHamilton 3214New Zealand AgResearch Ltd Lincoln Research CentreCorner Springs Road and Gerald StreetLincoln 8140New Zealand AgResearch Laboratory of Structural Biology School of Biological SciencesUniversity of Auckland3a Symonds StreetAuckland 1142New Zealand Grasslanz Technology Ltd Tennent DrivePalmerston North 4474New Zealand

epichloae endophytes of family Clavicipitaceae(comprising genera epichloëand Neotyphodium)are fungal symbionts of Pooideae *** associations formed,range from mutually beneficial to antagonistic and the nature of this relationship is dependent upon the importance of vertical(via host seeds)versus horizontal(ascospore mediated)transmission of the *** endophytes can enhance their hosts’survival through protection from abiotic and biotic stresses and can thus be utilized in an agricultural ***-safe grass-endophyte associations that confer bio-protective properties for increased pasture persistence and productivity have been developed and *** of the crucial drivers underpinning the selection of epichloae strains for commercial development is endophyte derived *** potential of next generation endophytes is determined by testing a number of attributes such as agronomic fitness,animal and food safety as well as compatibility with host plants of *** research supports these activities by focusing on elucidating mechanisms of compatibility between host and fungal symbiont,as well as investigating other molecular drivers of symbiosis such as siderophore mediated iron-uptake,fungal signalling,fungal growth in host plants and fungal secondary *** review weaves together the different strands of multidisciplinary research aimed at ultimately exploiting epichloae endophytes for increased pasture performance.

关键词： epichloë Neotyphodium Pooideae Symbiosis Secondary metabolite Toxicology

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

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

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：