Allelopathic effect of crustaceous lichens on epiphytic bryophytes and vascular plants

Frahm, Jan‐Peter; Specht, Anja; Reifenrath, Kerstin; Vargas, Yelitza León

doi:10.1127/nova.hedwigia/70/2000/245

Cited by 16 publications

(5 citation statements)

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“…Competition may also account for the fact that the greater number of lichen morphotypes observed in the center of the ENP did not result in greater richness or cover. In fact, lichens produce allelopathic compounds [87], primarily phenols, that inhibit the establishment or development of other lichens (e.g., [88,89]), mosses (e.g., [90][91][92]), and even higher plants (e.g., [93,94]).…”

Section: Discussionmentioning

confidence: 99%

Edge Effects Reflect the Impact of the Agricultural Matrix on the Corticolous Lichens Found in Fragments of Cerrado Savanna in Central Brazil

et al. 2020

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Habitat fragmentation affects lichen communities by inducing edge effects, although the dispersal of pollutants by pesticide drift from commercial crops may also provoke alterations in community structure, due to the varying sensitivity of lichen morphotypes to pollutants. In this context, we tested the hypothesis that lichen morphotype richness and diversity, and the percentage area of the trunks covered by different lichen morphotypes are modified significantly at the edges of fragments of Cerrado vegetation inserted within the agricultural matrix. We evaluated habitat fragments representing different Cerrado formations (Cerradão, Cerrado sensu stricto, and seasonal semi-deciduous forest) as well as the Emas National Park, a prominent Cerrado conservation unit. We used Generalized Linear Mixed Models (GLMMs) to test the potential of the models compiled using a mixture of phytosociological and environmental parameters, including the species, the height of the host plant (H), the circumference of its stem at breast height (CBH), total chlorophyll (TC), bark fissuring (BF) and pH, and illuminance (Lum), to explain the observed variation in the lichen morphotype richness and the percentage cover of the trunks by corticolous lichen morphotypes at the center and edge of the fragments. The central areas invariably had a greater diversity of morphotypes in all the fragments. The morphotypes considered highly sensitive to disturbance were not observed in edge areas, confirming a clear edge effect, as well as the influence of pesticide drift from the adjacent farmland matrix, on the structure of the lichen community. At both the edge and center sites, the larger trees (higher CBH) with less fissured bark tended to have the greatest diversity of lichen morphotypes, and more acidic barks had the greatest lichen cover. The models tested indicated that the variable tree species is an important determinant of the observed patterns of lichen morphotype richness and cover, either on its own or in association with pH or CBH + pH. The analyses also indicated that all the variables tested are important in some way for the definition of the percentage cover of the host trunks. The present study contributes to the understanding of the diversity of the corticolous lichen communities in the remaining fragments of Cerrado vegetation and the effects of the agricultural matrix on this community. The lichen may thus play a role as indicators of impact on other species, these organisms may provide important insights for the further investigation of the disturbance caused by the agricultural matrix on the communities of other groups of organisms.

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Section: Discussionmentioning

confidence: 99%

Edge Effects Reflect the Impact of the Agricultural Matrix on the Corticolous Lichens Found in Fragments of Cerrado Savanna in Central Brazil

et al. 2020

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“…Extraction with acetone and water was generally used in the studies. Secondary metabolites extracted from different lichen species showed inhibitory effects on the germination of Funaria hygrometrica Hedwig and Ceratodon purpureus C. Müller spores (Frahm et al, 2000). In this manner, the aim of the study was to investigate the effects of ethanol extracts of Xanthoparmelia somloensis lichen on the germination and seedling growth of tomato seeds.…”

Section: Introductionmentioning

confidence: 99%

Xanthoparmelia somloensis (Gyelnik) Hale likeninin liyofilize etanol ekstraktının domates bitkisi üzerindeki allelopatik etkilerinin araştırılması

Bingöl

BATTAL

ASLAN

et al. 2022

Anatolian Journal of Botany

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All organisms in nature interact and compete with each other. Various groups of organisms such as algae, lichens, crops and weeds have been found as allelopathic interaction and it is known that lichens have many potent secondary metabolites. The aim of this study was to determine the allelopathic effects of lyophilized ethanolic extract of Xanthoparmelia somloensis (Gyelnik) Hale lichen (XS) on tomato (Lycopersicum esculentum L.) germination and early development stage. Obtained lyophilized ethanolic extracts of XS lichen at concentrations of 50 ppm (XS-50), 100 ppm (XS-100), 200 ppm (XS-200) and 400 ppm (XS-400) were applied to tomato seeds and seedlings. In order to determine the effects caused by the extracts, germination rate and seedling growth parameters (vigor index, length, fresh weight, relative water content and pigment contents) were analyzed. According to the obtained data, there were significant decreases in germination rate and vigor index values depending on the increase in lichen extract concentration. Similar effects were also observed in root and shoot length and pigment contents. However, results of the lowest application (XS-50) were similar to control except root length and carotenoid content. The data obtained from this study exhibited that the lichen Xanthoparmelia somloensis has allelopathic effects and has the potential to be used for agricultural purposes.

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“…To better explain the patterns observed in the mangroves of São Paulo, we consider important the fact that these ecosystems are located in areas with altitude and steep topography, unlike the mangroves of Marajó Island that are established at low altitude. This is relevant mainly because bryophytes are highly sensitive to altitudinal variations and the richness of species increases at higher altitudes (Van Reenen & Gradstein 1984; Frahm 1990; Frahm & Gradstein 1991; Kessler 2000; Ah-Peng et al 2007). Furthermore, some species may be migrating from the forests surrounding the mangroves, since several areas of mangroves along the southeastern coast are bordered by Atlantic Forest (Vannucci 2003) and the bryophyte species listed for the mangroves of São Paulo are not restricted to this ecosystem, but rather occur in other types of environments (Visnadi 2008).…”

Section: Discussionmentioning

confidence: 99%

Spatial Distribution and Substrate Preferences of Bryophyte Species in Mangrove Ecosystems of the East Coast of Marajó Island, Brazil

Portal Gomes,

Simões,

Tavares-Martins

2023

Cryptogamie, Bryologie

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Allelopathic effect of crustaceous lichens on epiphytic bryophytes and vascular plants

Cited by 16 publications

References 0 publications

Edge Effects Reflect the Impact of the Agricultural Matrix on the Corticolous Lichens Found in Fragments of Cerrado Savanna in Central Brazil

Edge Effects Reflect the Impact of the Agricultural Matrix on the Corticolous Lichens Found in Fragments of Cerrado Savanna in Central Brazil

Xanthoparmelia somloensis (Gyelnik) Hale likeninin liyofilize etanol ekstraktının domates bitkisi üzerindeki allelopatik etkilerinin araştırılması

Spatial Distribution and Substrate Preferences of Bryophyte Species in Mangrove Ecosystems of the East Coast of Marajó Island, Brazil

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