A mutualistic endophyte alters the niche dimensions of its host plant

Kazenel, Melanie R.; Debban, Catherine L.; Ranelli, Luciana B.; Hendricks, Will Q.; Chung, Y. Anny; Pendergast, Thomas H.; Charlton, Nikki D.; Young, Carolyn A.; Rudgers, Jennifer A.

doi:10.1093/aobpla/plv005

Cited by 29 publications

(22 citation statements)

References 63 publications

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“…However, positive interactions are more common than once thought and it is now known that by increasing the availability of resources or by mitigating negative abiotic influences, they can potentially influence the realized niches (Bruno, Stachowicz, & Bertness, ; Bulleri, Bruno, Silliman, & Stachowicz, ; Stachowicz, ). Although positive interactions have been shown to expand plants’ niches (Afkhami, McIntyre, & Strauss, ; Bulleri et al., ; Kazenel et al., ), no studies thus far have explicitly tested the effect of mycorrhizal symbiosis—the most widespread type of symbiosis—on plants’ realized niches.…”

Section: Introductionmentioning

confidence: 99%

Niche differentiation and expansion of plant species are associated with mycorrhizal symbiosis

et al. 2017

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Abstract1. Mycorrhizal symbiosis is a widespread association between plant roots and mycorrhizal fungi, which is thought to contribute to plant niche differentiation and expansion. However, this has so far not been explicitly tested.2. To address the effect of mycorrhizal symbiosis on plants' realized niches, we addressed how mycorrhizal status (i.e. the frequency of occurrence of mycorrhizal symbiosis), flexibility (i.e. the ability to grow both with and without mycorrhizal symbiosis) and type of a plant species affect the realized niche optima, widths and volumes. For this, we used co-occurrence data from the flora of the Netherlands along soil fertility, moisture, pH, salinity, light and temperature gradients.Phylogenetic dependency of the species was taken into account using phylogenetic generalized least squares models. K E Y W O R D Sbelow-ground interactions, mycorrhizal status, mycorrhizal symbiosis, mycorrhizal type, niche differentiation, niche expansion, niche width, plant functional traits

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Section: Introductionmentioning

confidence: 99%

Niche differentiation and expansion of plant species are associated with mycorrhizal symbiosis

et al. 2017

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“…The effectiveness of fungal endophyte occurred only in the early plant stage. It is possible that the consideration of mature plants and sexual reproduction would have different yield results regarding how the fungal endophyte contributes to niche partitioning (Kazenel et al, 2015).…”

confidence: 99%

Determination of Endophytic Fungi as Induce Resistance Agent of Chilli Pepper Against Pepper Yellow Leaf Curl Disease

Lestari¹,

Hidayat²,

Widodo³

2018

Agrivita.J.Agr.Sci

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Pepper yellow leaf curl disease caused by Pepper yellow leaf curl virus becomes a major problem on chilli pepper in Indonesia since 1999. Endophytic fungi has the potency to suppress plant diseases by acting as induced resistant agent. The objective of this research was to determine the effect of endophytic fungi application on incidence of yellow leaf curl disease of chilli pepper. Four isolates of endophytic fungi, i.e. Cercospora nicotianae isolate H5, Curvularia sp. isolate H12, Fusarium sp. isolate AC-2.7 and AC-4.5 were applied as seed treatment and leaf spray on 2 chilli varieties, 'Biola' and 'Luwes'. Observations of incubation period showed that delayed symptom occurred on application of Fusarium sp. isolate AC-2.7 and Curvularia sp. isolate H12. Disease incidence reached 100 % in all treatments. Less severe symptom was observed on application of Curvularia sp. isolate H12. Most plants infected by PYLCIV showed obvious symptoms of yellow mosaic, leaf curling and stunting. Plant productivity analysis showed that application of Fusarium sp. isolate AC-2.7 resulted higher fruit weight and this treatment may induce tolerant response of the plants to PYLCIV infection. Initial effort to evaluate endophytic fungi as biocontrol agents for pepper yellow leaf curl disease should be studied further.

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“…Nitrogen‐fixing Rhizobium bacteria are well known for increasing nitrogen availability to legumes, and ectomycorrhizal and arbuscular mycorrhizal fungi increase nutrients and water uptake in many vascular plant species (Bordeleau & Prévost, ; Entry, Rygiewicz, Watrud, & Donnelly, ; Smith & Read, ). These symbioses with beneficial microbes may be an essential mechanism for increasing plant fitness and thus expanding host plant niche and distribution into habitats where the host plant could not otherwise persist (Bordeleau & Prévost, ; Friesen et al, ; Kazenel et al, ; Mapfumo, Mtambanengwe, Giller, & Mpepereki, ; Reynolds, Packer, Bever, & Clay, ).…”

Section: Introductionmentioning

confidence: 99%

Environmental factors affect the distribution of two Epichloë fungal endophyte species inhabiting a common host grove bluegrass (Poa alsodes)

Shymanovich

Faeth

2019

Ecology and Evolution

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Aim The endophyte Epichloë alsodes, with known insecticidal properties, is found in a majority of Poa alsodes populations across a latitudinal gradient from North Carolina to New York. A second endophyte, E. schardlii var. pennsylvanica, with known insect‐deterring effects, is limited to a few populations in Pennsylvania. We explored whether such disparate differences in distributions could be explained by selection from biotic and abiotic environmental factors. Location Along the Appalachian Mountains from North Carolina to New York, USA. Taxon Fungi. Methods Studied correlations of infection frequencies with abiotic and biotic environmental factors. Checked endophyte vertical transmission rates and effects on overwintering survival. With artificial inoculations for two host populations with two isolates per endophyte species, tested endophyte–host compatibility. Studied effects of isolates on host performances in greenhouse experiment with four water‐nutrients treatments. Results Correlation analysis revealed positive associations of E. alsodes frequency with July Max temperatures, July precipitation, and soil nitrogen and phosphorous and negative associations with insect damage and soil magnesium and potassium. Plants infected with E. alsodes had increased overwintering survival compared to plants infected with E. schardlii or uninfected (E−) plants. Artificial inoculations indicated that E. alsodes had better compatibility with a variety of host genotypes than did E. schardlii. The experiment with reciprocally inoculated plants grown under different treatments revealed a complexity of interactions among hosts, endophyte species, isolate within species, host plant origin, and environmental factors. Neither of the endophyte species increased plant biomass, but some of the isolates within each species had other effects on plant growth such as increased root:shoot ratio, number of tillers, and changes in plant height that might affect host fitness. Main conclusion In the absence of clear and consistent effects of the endophytes on host growth, the differences in endophyte‐mediated protection against herbivores may be the key factor determining distribution differences of the two endophyte species.

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A mutualistic endophyte alters the niche dimensions of its host plant

Cited by 29 publications

References 63 publications

Niche differentiation and expansion of plant species are associated with mycorrhizal symbiosis

Niche differentiation and expansion of plant species are associated with mycorrhizal symbiosis

Determination of Endophytic Fungi as Induce Resistance Agent of Chilli Pepper Against Pepper Yellow Leaf Curl Disease

Environmental factors affect the distribution of two Epichloë fungal endophyte species inhabiting a common host grove bluegrass (Poa alsodes)

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