Ectomycorrhizae, arbuscular mycorrhizae, and dark-septate fungi on Salix humboldtiana in two riparian populations from central Argentina

Becerra, Alejandra Gabriela; Nouhra, Eduardo; Silva, Mariana Paola; McKay, D.

doi:10.1007/s10267-009-0490-4

Cited by 18 publications

(9 citation statements)

References 59 publications

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“…All root tips were visually inspected under a dissecting scope for infection by EM based on presence of a mantle of fungal hyphae surrounding the plant root tips (Smith and Read 2008). This tip-count method has been used in several studies (e.g., see Gehring and Whitham 1994;Helm et al 1999;or Becerra et al 2009), where the number of infected root tips is compared to the total root tips examined to represent an estimate of EM colonization. The same root samples examined for EM were stained to test for presence of endomycorrhizal infection using INVAM (2006) and Vierheilig et al (1998) standard protocols.…”

Section: Methodsmentioning

confidence: 99%

Mycorrhizae and soil phosphorus affect growth of Celastrus orbiculatus

2011

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Celastrus orbiculatus is an exotic liana that exploits disturbed areas in the eastern United States and once established, can invade into relatively undisturbed forest ecosystems. Mechanisms facilitating its invasion are not fully understood, including whether associations with mycorrhizal fungi are related to its invasion success. We grew C. orbiculatus in a greenhouse and compared growth responses when mycorrhizal fungi or a fungistatic were added to growth media that was either phosphorus-limiting or non-limiting. Results indicated C. orbiculatus forms association with native endomycorrhizal but not with native ectomycorrhizal fungi regardless of phosphorus level. Plants grown with sufficient phosphorus had significantly higher above-ground morphological and physiological traits but significantly lower root biomass compared to plants grown in low phosphorus conditions. Although above-ground traits did not vary significantly between mycorrhizal versus fungistatic added treatments, root biomass was significantly less in plants inoculated with mycorrhizae compared to plants receiving fungistatic. Under low phosphorus conditions, mycorrhizae appeared to be beneficial to the plant although being mycorrhizal did not fully compensate for insufficient phosphorous in the greenhouse situation where pot size limited soil exploration. Our results suggest that in the presence of mycorrhizae or sufficient phosphorus, C. orbiculatus can respond by preferentially allocating energy to above-ground growth, thus supporting its liana growth form onto trees and allowing the exotic to outcompete native species for light resources. If mycorrhizal fungi aid in acquisition of phosphorus, this association could be related to the invasion success of C. orbiculatus.

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Section: Methodsmentioning

confidence: 99%

Mycorrhizae and soil phosphorus affect growth of Celastrus orbiculatus

2011

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“…Also, the relationship and possible interchange of EMF spores between lowland forests and those at higher elevation, where EM hosts like Quercus and Alnus are frequent, must be investigated. Sampling widespread EM hosts, such as Salix humboldtiana (Becerra et al, 2009), and the diverse Coccoloba or Gnetum species might help in the study of the distribution of EMF across diverse Neotropical ecosystems and their biogeography. Furthermore, coupling metabarcoding with spatial information on host distributions can be used to model suitable habitats for EM symbioses, as has recently been done for Andean Alnus-associated EMF (Wicaksono et al, 2016).…”

Section: Future Stepsmentioning

confidence: 99%

The (re)discovery of ectomycorrhizal symbioses in Neotropical ecosystems sketched in Florianópolis

et al. 2017

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The (re)discovery of ectomycorrhizal symbioses in Neotropical ecosystems sketched in Florian opolis VIII th Brazilian Mycological Congress, held in Florian opolis, Brazil, October 2016The VIII th Brazilian Mycological Congress, held in Florian opolis (Brazil) in October 2016, was organized by the Universidade Federal de Santa Catarina and brought together more than 1000 scientists of 20 nationalities, which illustrates the dynamism of South American mycology, in many fields. One of the major takehome messages, amongst many research talks and posters, was the rising interest in the ectomycorrhizal (EM) symbiosis, which was addressed by both a symposium and a 3-day workshop 'To the roots of trees: growing awareness of ectomycorrhizal symbioses in the Neotropics'. Talks on this symbiosis were given by taxonomists and ecologists, and focused on the Neotropics, the tropical realm that extends from the central plateau of Mexico and which includes South America. The inventories of ectomycorrhizal fungi (EMF), observations of EM roots, and metabarcoding studies presented revealed a hitherto unsuspected abundance of the EM symbiosis to all participants, including a number of South-American students. This meeting provided great opportunities to share points of view on the historical reasons behind gaps in knowledge on EMF associations in neotropical low-elevation areas. The meeting also highlighted recent discoveries and forthcoming challenges, based on three complementary approaches: studies on fruitbodies, EM roots, and the metabarcoding of soil samples.

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“…e Inocybe sp. Becerra et al, 2009). Upson et al (2009b) investigaron las afi nidades fi logenéticas de los DSE que colonizan las raíces de Colobanthus quitensis (Kunth) Bartl.…”

Section: Diversidad Y Distribuciónunclassified

Diversidad, ecología e importancia potencial de los hongos endófitos septados obscuros en México

et al. 2014

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La simbiosis representa una estrategia clave para el éxito de muchos grupos de organismos; de hecho, es un proceso ubicuo que ha favorecido la expresión y diversifi cación de la vida en la Tierra y contribuye en la dinámica de los nutrientes en la biosfera (Lane y Archibald, 2008). Evolutivamente, las plantas requieren de la asociación con organismos especializados que favorecen su adaptación a ciertos nichos ecológicos, y a la vez, mantienen un crecimiento y desarrollo adecuado (Yuan et al., 2010a Autor para la correspondencia: aalarconcp@gmail.comResumen: Como parte de los microorganismos endófi tos de la raíz se encuentra un grupo de hongos que por sus características morfológicas son denominados hongos endófi tos septados obscuros. Estos hongos están presentes en la mayoría de los ecosistemas terrestres y pueden cohabitar o no con los hongos micorrízicos. El conocimiento de las funciones biológicas y ecológicas de este grupo de hongos endófi tos representa un nuevo reto para quienes estudian las relaciones simbióticas. En México, a pesar de ser reconocido como uno de los países con mayor diversidad vegetal a nivel mundial, la información sobre la ecología y particularmente, sobre los benefi cios de los endófi tos mencionados en las plantas es casi nula. Lo anterior resalta la necesidad de abordar áreas de investigación emergentes relacionadas con el aislamiento, identifi cación y evaluación de los hongos endófi tos septados obscuros, para comprender mejor su biología, diversidad y sinergismo con otros microorganismos benéfi cos, con la fi nalidad de poder utilizar estos endófi tos como una herramienta biotecnológica para el desarrollo agrícola y forestal en México. Palabras clave: aplicación potencial, endófi tos septados obscuros, fósforo, micorriza, mutualismo, nitrógeno, raíz, simbiosis. Abstract:There is a group of fungi which belongs to the root endophytic microorganisms that due to their morphological characteristics are called dark septate endophytes. These fungi are present in most terrestrial ecosystems and can live together or not with mycorrhizal fungi. The understanding of the biology and ecological functions of this group of endophytes represents a new challenge for those researchers focused on the symbiotic relationships. Mexico, despite being recognized as one of the countries with the highest plant diversity worldwide, lacks of information concerning on the ecology and particularly, on the benefi ts of such fungal endophytes. The later highlights the need for studying emerging research areas related to the isolation, identifi cation and evaluation of dark septate endophytes and thus, to understand their biology, diversity and synergy with other benefi cial microorganisms. Such fundamental knowledge will allow the potential use of those fungal endophytes as a biotechnological tool for agriculture and forestry in Mexico.

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Ectomycorrhizae, arbuscular mycorrhizae, and dark-septate fungi on Salix humboldtiana in two riparian populations from central Argentina

Cited by 18 publications

References 59 publications

Mycorrhizae and soil phosphorus affect growth of Celastrus orbiculatus

Mycorrhizae and soil phosphorus affect growth of Celastrus orbiculatus

The (re)discovery of ectomycorrhizal symbioses in Neotropical ecosystems sketched in Florianópolis

Diversidad, ecología e importancia potencial de los hongos endófitos septados obscuros en México

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