نتایج جستجو برای: allelochemicals

تعداد نتایج: 502  

2009
Yoshiharu Fujii

Allelochemicals, otherwise known as the inherent silent tool of self-protection among plants, have witnessed a dramatic increase in research in recent years. The potentials of these allelochemicals becoming new bioactive chemicals useful for more sustainable agriculture and safe food production for humanity have been realized for quite sometime. We have recently started a new project entitled, ...

2008
Elisabeth M. Gross

12.1 Abstract 179 12.2 Introduction 180 12.3 Lipophilic Allelochemicals from Benthic Cyanobacteria: Photosynthetic Inhibitors from Fischerella 182 12.3.1 Structure Elucidation of FischereIla Allelochemicals . . . . . . . . . . . . . . . . . . .. 183 12.3.2 Transfer of Allelochemicals in Benthic Cyanobacteria 184 12.3.3 FischereIlins, Biological Herbicides 184 12.3.4 Environmental Factors Affect...

Journal: :Journal of environmental biology 2008
G Kumar Neelam Gautam

In recent decades allelopathy has gained much attention in the sustainable agricultural systems. It is necessary to trace out the mechanism of action of allelochemicals of plants on other plants. Allelochemicals of different plants interact differently with each other. In the present context an attempt has been made to study the influence of allelochemicals released by Parthenium on the growth,...

2017
Urja Pandya Sunita Prakash Kishor Shende Umesh Dhuldhaj Meenu Saraf

A potential antagonist, designated strain Bacillus subtilis MBCU5 was previously isolated from vermicompost-amended soils of Gandhinagar, Gujarat, India. Crude allelochemicals from strain MBCU5 displayed strong antifungal activity against Macrophomina phaseolina as well as Rhizoctonia solani. These crude allelochemicals were tentatively identified as iturin, fengycin and surfactin through TLC a...

2014
Chunni Zhang Andrew Wong Yalin Zhang Xinzhi Ni Xianchun Li

How polyphagous herbivores up-regulate their counterdefense genes in response to a broad range of structurally different allelochemicals remains largely unknown. To test whether this is accomplished by having more allelochemical-response elements or the similar number of functionally more diverse elements, we mapped out the cis-acting elements mediating the induction of the allelochemical-metab...

Journal: :Uchu Seibutsu Kagaku 2003
Francisco A Macias David Marin Alberto Oliveros-Bastidas Rosa M Varela Ana M Simonet Ceferino Carrera Jose M Molinillo

Natural products involved in plant-plant and plant-microorganism ecological interaction (Allelochemicals) are an important potential source for alternative agrochemicals and pharmaceuticals, in order to solve the many problems derived from inadequate culture practices and abuse of synthetic herbicides. Isolation, structural determination, bioassay techniques and applicability for these compound...

2015
Daniel Prati

Some introduced invasive species may be competitively superior to natives because they release allelochemicals, which egatively affect native species. Allelochemicals can be immediately effective after being released but can also persist in soils, esulting in a legacy effect. However, to our knowledge there are no studies which distinguish between allelopathic legacy and mmediate allelopathy of...

Journal: :Archives of insect biochemistry and physiology 2001
R V Barbehenn

Four mechanisms by which peritrophic membranes (PMs) potentially protect herbivorous insects from ingested allelochemicals are reviewed: adsorption, ultrafiltration, polyanion exclusion, and the capacity of PMs to act as antioxidants. Most of the research on the protective roles of PMs against ingested allelochemicals has focused on their impermeability to tannins. Adsorption of tannins by the ...

Journal: :آب و خاک 0
مریم پورمندگاری مهرجردی محمود ذکائی حمید اجتهادی

abstract the aim of this study was the identify cyanobacterial flora of rice–fields in dargaz, to interaction between cyanobacteria by culturing in solid medium bg-110 in laboratory was investigated. nostoc piscinale and nostoc spongiaeforme were identified as strongest and weakness species, respectively, regarding secondary metabolits producing (allelochemicals).the algal pairs were classified...

2008
ROBERT J. KREMER

Barley is integrated with other crops to inhibit weed growth, through allelopathic interactions. Effects of barley on growth of other crops, weeds and autotoxicity among cultivars result primarily from allelopathy mediated by allelochemicals released from plant components and/or exuded from living roots. A limited number of allelochemicals are identified that contributes to allelopathic effecti...

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