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List of works by Marjo Helander

A Glyphosate-Based Herbicide in Soil Differentially Affects Hormonal Homeostasis and Performance of Non-target Crop Plants

scientific article published on 01 January 2021

Alkaloid Quantities in Endophyte-Infected Tall Fescue are Affected by the Plant-Fungus Combination and Environment.

scientific article

Antioxidants in Festuca rubra L. seeds affected by the fungal symbiont Epichloë festucae

Are endophyte-mediated effects on herbivores conditional on soil nutrients?

scientific article

Birch family and environmental conditions affect endophytic fungi in leaves

scientific article published on 01 February 1999

Birch leaf endophytes in managed and natural boreal forests

Birch pollen production, transport and deposition for the period 1984–1993 at Kevo, northernmost Finland

scholarly article by Sheila Hicks et al published December 1994 in Aerobiologia

Characterization of phenolic compounds from inner bark of Betula pendula

Chemical Ecology Mediated by Fungal Endophytes in Grasses ⬇️

scientific article published on July 1, 2013

Circadian periodicity of airborne pollen and spores; significance of sampling height

article by Aulirantio-Lehtimäki et al published December 1991 in Aerobiologia

Classification of the glyphosate target enzyme (5-enolpyruvylshikimate-3-phosphate synthase) for assessing sensitivity of organisms to the herbicide

scientific article published on 14 November 2020

Climate change-driven species' range shifts filtered by photoperiodism

article

Comparison of some pollen concentrations in Finland and the Estonian SSR

scholarly article by Ritva Kupias et al published December 1989 in Aerobiologia

Consumption of grass endophytes alters the ultraviolet spectrum of vole urine

scientific article published on 01 May 2008

Dark septate endophytes: mutualism from by-products?

scientific article published on 27 October 2021

Data on litter quality of host grass plants with and without fungal endophytes

scientific article

Defensive mutualism between plants and endophytic fungi?

article

Defoliation and mycorrhizal symbiosis: a functional balance between carbon sources and below-ground sinks

article by K. Saikkonen et al published January 1999 in Ecology Letters

Development and characterization of chloroplast microsatellite markers in a fine-leaved fescue, Festuca rubra (Poaceae)

scientific article published on 4 December 2014

Development and characterization of nuclear microsatellite markers in the endophytic fungus Epichloë festucae (Clavicipitaceae).

scientific article published on 4 December 2014

Direct and indirect effects of the fungal endophyte Epichloë uncinatum on litter decomposition of the host grass, Schedonorus pratensis

scientific article published in 2017

Does Glyphosate Affect the Human Microbiota?

scientific article published on 9 May 2022

Does cutting of mugwort stands affect airborne pollen concentrations?

scientific article published on August 1, 1992

ENVIRONMENTAL CONDITIONS AND HOST GENOTYPE DIRECT GENETIC DIVERSITY OF VENTURIA DITRICHA, A FUNGAL ENDOPHYTE OF BIRCH TREES

scientific article published on 01 August 2002

Effects of a glyphosate-based herbicide on soil animal trophic groups and associated ecosystem functioning in a northern agricultural field

scientific article published on 12 June 2019

Effects of a glyphosate-based herbicide on survival and oxidative status of a non-target herbivore, the Colorado potato beetle (Leptinotarsa decemlineata)

scholarly article by Miia Rainio et al published January 2019 in Comparative Biochemistry and Physiology C: Toxicology and Pharmacology

Effects of air pollution and other environmental factors on birch pollen allergens.

scientific article published on December 1997

Effects of parental exposure to glyphosate-based herbicides on embryonic development and oxidative status: a long-term experiment in a bird model

scientific article published on 14 April 2020

Effects of watering and simulated acid rain on quantity of phyllosphere fungi of birch leaves

scientific article published on 01 January 1990

Efficient analysis of ploidy levels in plant evolutionary ecology

article

Endophyte infection, nutrient status of the soil and duration of snow cover influence the performance of meadow fescue in sub-artic conditions

Endophyte-grass-herbivore interactions: the case of Neotyphodium endophytes in Arizona fescue populations

scientific article published on 01 November 1999

Endophyte-mediated interactions between woody plants and insect herbivores?

article

Endophytic Epichloë species and their grass hosts: from evolution to applications

scientific article

Endophytic fungi and silica content of different bamboo species in giant panda diet

Endophytic fungi in wild and cultivated grasses in Finland

scholarly article by K. Saikkonen et al published June 2000 in Ecography

Endophytic fungus decreases plant virus infections in meadow ryegrass (Lolium pratense).

scientific article published on December 2006

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

article

Environmental conditions and host plant origin override endophyte effects on invertebrate communities

article

Epichloë Endophyte-Promoted Seed Pathogen Increases Host Grass Resistance Against Insect Herbivory

scientific article published in 2022

Epichloë endophyte effects on leaf blotch pathogen (Rhynchosporium sp.) of tall fescue (Schedonorus phoenix) vary among grass origin and environmental conditions

scientific article published in 2018

Epichloë endophytes alter inducible indirect defences in host grasses

scientific article (publication date: 2014)

Epichloë grass endophytes in sustainable agriculture

scientific article

Evolution of endophyte-plant symbioses.

scientific article published on June 2004

Experimental testing of rust fungus-mediated herbivory resistance in Betula pendula

FUNGAL ENDOPHYTES: A Continuum of Interactions with Host Plants

article

Female Preference and Adverse Developmental Effects of Glyphosate-Based Herbicides on Ecologically Relevant Traits in Japanese Quails

scientific article published on 06 January 2020

Field-realistic acute exposure to glyphosate-based herbicide impairs fine-color discrimination in bumblebees

scientific article published in January 2023

Fragmented environment affects birch leaf endophytes.

scientific article published in January 2007

Fungal endophyte mediated occurrence of seminiferous and pseudoviviparous panicles in Festuca rubra

scientific article published in 2014

Fungal endophytes help prevent weed invasions

article by Kari Saikkonen et al published January 2013 in Agriculture, Ecosystems & Environment

Fungal endophytes reduce regrowth and affect competitiveness of meadow fescue in early succession of pastures

Fungal-mediated multitrophic interactions--do grass endophytes in diet protect voles from predators?

scientific article

Genetic compatibility determines endophyte-grass combinations

scientific article

Geographic Variation in Festuca rubra L. Ploidy Levels and Systemic Fungal Endophyte Frequencies.

scientific article

Glyphosate and a glyphosate-based herbicide affect bumblebee gut microbiota

scientific article published in 2023

Glyphosate decreases mycorrhizal colonization and affects plant-soil feedback.

scientific article published on 11 June 2018

Glyphosate in northern ecosystems

scientific article published on 06 June 2012

Glyphosate residues alter the microbiota of a perennial weed with a minimal indirect impact on plant performance

scientific article published on 6 November 2021

Glyphosate residues in soil affect crop plant germination and growth

scientific article published on 23 December 2019

Glyphosate-Modulated Biosynthesis Driving Plant Defense and Species Interactions

scientific article published on 02 December 2020

Glyphosate-based herbicide affects the composition of microbes associated with Colorado potato beetle (Leptinotarsa decemlineata)

scientific article published on 19 March 2020

Glyphosate-based herbicide has soil-mediated effects on potato glycoalkaloids and oxidative status of a potato pest

scientific article published on 05 June 2020

Glyphosate-based herbicide use affects individual microbial taxa in strawberry endosphere but not the microbial community composition

scientific article published in 2023

Glyphosate-based herbicides influence antioxidants, reproductive hormones and gut microbiome but not reproduction: A long-term experiment in an avian model

scientific article published on 05 July 2020

Heritable Epichloë symbiosis shapes fungal but not bacterial communities of plant leaves

article

High variation in frequency of infection by endophytes in cultivars of meadow fescue in Finland

scholarly article by S. Saari et al published June 2009 in Grass and Forage Science

Insect herbivory may cause changes in the visual properties of leaves and affect the camouflage of herbivores to avian predators

scientific article published in 2017

Insect oviposition preference between Epichloë-symbiotic and Epichloë-free grasses does not necessarily reflect larval performance

scientific article published on 01 June 2020

Leaf surface traits: overlooked determinants of birch resistance to herbivores and foliar micro-fungi?

article published in 2004

Legacy of agrochemicals in the circular food economy: Glyphosate-based herbicides introduced via manure fertilizer affect the yield and biochemistry of perennial crop plants during the following year

scientific article published in 2022

Micro-fungi and invertebrate herbivores on birch trees: fungal mediated plant-herbivore interactions or responses to host quality?

article

Model systems in ecology: dissecting the endophyte-grass literature

scientific article

Neotyphodium fungal endophyte in tall fescue (Schedonorus phoenix): a comparison of three Northern European wild populations and the cultivar Kentucky-31

scientific article published in 2012

No effects of Epichloë endophyte infection on nitrogen cycling in meadow fescue (Schedonorus pratensis) grassland

Non-systemic fungal endophytes in Festuca rubra plants infected by Epichloë festucae in subarctic habitats

article

Nutritional niche overlap potentiates the use of endophytes in biocontrol of a tree disease

article published in 2015

Occurrence and Genetic Structure of the Systemic Grass Endophyte Epichloë festucae in Fine Fescue Populations

scientific article published on 21 December 2006

Parental effects via glyphosate-based herbicides in a bird model?

scientific article published on 23 December 2019

Performance of Endophyte Infected Tall Fescue in Europe and North America

scientific article

Phenolic Compounds of the Inner Bark of Betula pendula: Seasonal and Genetic Variation and Induction by Wounding

scientific article published on 14 October 2012

Phenotypic and genetic variation in natural populations of <i>Festuca rubra s.l.</i> in Europe

scientific article published in 2019

Resistance to Dutch elm disease reduces presence of xylem endophytic fungi in Elms (Ulmus spp.).

scientific article

Risk in the circular food economy: Glyphosate-based herbicide residues in manure fertilizers decrease crop yield

scientific article published on 07 August 2020

Role of foliar fungal endophytes in litter decomposition among species and population origins

scientific article published in 2016

Silicon, endophytes and secondary metabolites as grass defenses against mammalian herbivores

scientific article

Simulated acid rain affects birch leaf endophyte populations

scientific article published on 01 November 1993

Susceptibility of endophyte-infected grasses to winter pathogens (snow molds)

article

Symbiotic interactions as drivers of trade-offs in plants: effects of fungal endophytes on tall fescue

article

Symbiotically modified organisms: nontoxic fungal endophytes in grasses

scientific article published on 4 April 2013

Systemic fungal endophytes and ploidy level in Festuca vivipara populations in North European Islands

scientific article published in 2014

The effects of endophytes on seed production and seed predation of tall fescue and meadow fescue

scientific article published on 25 September 2010

Toward Comprehensive Plant Microbiome Research

scientific article

Transfer of endophyte-origin defensive alkaloids from a grass to a hemiparasitic plant

article

Trends of some airborne tree pollen in the Nordic countries and Austria, 1980—1993

scholarly article by Siegfried Jäger et al published January 1996 in Grana

Variable effects of endophytic fungus on seedling establishment of fine fescues

scientific article published on 6 November 2008

Vertically transmitted fungal endophytes: different responses of host-parasite systems to environmental conditions

article

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