Occurrence of arbuscular mycorrhizal fungi in leaf litter and roots of shaded coffee plantations under organic and conventional management

Díaz-Ariza, Lucía A.; Rivera, Emma Lucía; Sánchez, Natalia

doi:10.36783/18069657rbcs20200110

Cited by 5 publications

(8 citation statements)

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“…Functionally distinct plants such as coffee and macauba can recruit distinct fungal communities because they contribute to functional diversity (Davison et al, 2020). These integration effects were also reported in coffee plantations intercropped with green manure or perennial crops, where the improvements in availability of plant hosts and soil exudates contribute to the increasing number of propagules and AMF diversity (Sánchez et al, 2009;Dobo et al, 2018;Prates Júnior, 2019;Díaz-Ariza et al, 2021).…”

Section: -11mentioning

confidence: 89%

“…The best performance of mycorrhizal plants is related to its higher efficiency in water and nutrient absorption (Andrade et al, 2009;Püschel et al 2020) and to improvements in this association in soil quality (Zhang et al, 2017). These fungi stand out on account of their increased absorption of water and low mobility nutrients in the soil, such as P and Zn (Gianinazzi et al, 2010;Díaz-Ariza et al, 2021) The hyphae network increase the volume of soil explored by the root system of plants, accessing ions located far from the root surface (Smith & Smith, 2011). Thus, the AMF association favors both growth, coffee productivity (Siqueira et al, 1998;Bhattacharya & Bagyaraj, 2002) and decreased phosphate fertilization (Perea Rojas et al, 2019;Araújo et al, 2020).…”

Section: Introduction and Objectivesmentioning

confidence: 99%

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Structure of AMF Community in an Agroforestry System of Coffee and Macauba Palm

et al. 2021

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Coffee crop in Brazil is typically grown as a monoculture. However, we hypothesized that agroforestry system is favorable association for arbuscular mycorrhizal fungi (AMF), affecting its community structure and potentially impacting crop productivity and agroecosystem health. This study evaluated how the microclimate, soil depth, macauba field spacing and distance between coffee plants and palms affect the structure of the AMF community. The structure of the AMF community was influenced by the soil depth, microclimate features, soil moisture, maximum air temperature, and photosynthetically active radiation (PAR). The distance at which coffee-macauba influences ecological diversity indices of AMF, and higher diversity are related to the proximity between plants. AMF diversity (Richness and Shannon) in the agroforestry system exceeded that observed in the full-sun coffee in the 0-20 soil depth layer. Our results showed that the microclimate, soil depth, plant density, and distance between coffee from macauba affected the AMF community structure.

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Section: -11mentioning

confidence: 89%

Section: Introduction and Objectivesmentioning

confidence: 99%

Structure of AMF Community in an Agroforestry System of Coffee and Macauba Palm

et al. 2021

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“…On the other hand, there is still little information about fungal diversity in traditional coffee plantations despite their relevance for ecosystem functioning as decomposers, symbionts and pathogens ( Mueller, Bills & Foster, 2004 ; Nguyen et al, 2016 ). Mycorrhiza forming fungi, essential for the establishment and development of some plants, have been detected in soil from shade-coffee plantations ( Rao et al, 2020 ; Jurburg, Shek & McGuire, 2020 ; Díaz-Ariza, Rivera & Sánchez, 2021 ). Specifically, it is unknown if, and what mycorrhizae-forming fungi can be found on the branches and trunks of coffee bushes and shade trees, which hold a diversity of epiphytes, some of them endangered, as is the case of some orchids ( Moguel & Toledo, 1999 ; Solís-Montero, Flores-Palacios & Cruz-Angón, 2005 ; Espejo Serna et al, 2005 ; Mondragón, Santos-Moreno & Damon, 2009 ; Damon, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Fungal diversity in shade-coffee plantations in Soconusco, Mexico

Zarza

López-Pastrana

Damon

et al. 2022

PeerJ

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Background As forested natural habitats disappear in the world, traditional, shade-coffee plantations offer an opportunity to conserve biodiversity and ecosystem services. Traditional coffee plantations maintain a diversity of tree species that provide shade for coffee bushes and, at the same time, are important repositories for plants and animals that inhabited the original cloud forest. However, there is still little information about shade-coffee plantation’s fungal diversity despite their relevance for ecosystem functioning as decomposers, symbionts and pathogens. Specifically, it is unknown if and what mycorrhizae-forming fungi can be found on the branches and trunks of coffee bushes and trees, which hold a diversity of epiphytes. Here, we evaluate fungal communities on specific plant microsites on both coffee bushes and shade trees. We investigate the ecological roles played by this diversity, with a special focus on mycorrhizae-forming fungi that may enable the establishment and development of epiphytic plants. Methods We collected 48 bark samples from coffee bushes and shade trees (coffee; tree), from four plant microsites (upper and lower trunks, branches and twigs), in two shade-coffee plantations in the Soconusco region in southern Mexico, at different altitudes. We obtained ITS amplicon sequences that served to estimate alpha and beta diversity, to assign taxonomy and to infer the potential ecological role played by the detected taxa. Results The bark of shade trees and coffee bushes supported high fungal diversity (3,783 amplicon sequence variants). There were no strong associations between community species richness and collection site, plant type or microsite. However, we detected differences in beta diversity between collection sites. All trophic modes defined by FUNGuild database were represented in both plant types. However, when looking into guilds that involve mycorrhizae formation, the CLAM test suggests that coffee bushes are more likely to host taxa that may function as mycorrhizae. Discussion We detected high fungal diversity in shade-coffee plantations in Soconusco, Chiapas, possibly remnants of the original cloud forest ecosystem. Several mycorrhiza forming fungi guilds occur on the bark of coffee bushes and shade trees in this agroecosystem, with the potential of supporting epiphyte establishment and development. Thus, traditional coffee cultivation could be part of an integrated strategy for restoration and conservation of epiphytic populations. This is particularly relevant for conservation of threatened species of Orchidaceae that are highly dependent on mycorrhizae formation.

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“…Los HMA no sólo se desarrollan en el suelo y en las raíces de las plantas hospedantes, sino que también, se ha detectado micelio y esporas extraradicales en hojarasca de diversos ecosistemas naturales y agrícolas (Bunn et al, 2019;Díaz Ariza et al, 2021). Su función en la hojarasca aún no ha sido esclarecida (Bunn et al, 2019), ya que son incapaces de descomponer materia orgánica (MO) por carecer de enzimas líticas (Tisserant et al, 2011;Kobayashi et al, 2018).…”

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“…Una de las técnicas más utilizadas para la detección de endófitos fúngicos en raíces y la observación de las estructuras extra-radicales de HMA desarrolladas en la hojarasca, es la técnica de clarificación y tinción descrita por Phillips & Hayman (1970) (Aristizábal et al, 2004Bunn et al, 2019;Díaz Ariza et al, 2021). Esta técnica se basa en la inmersión del material vegetal en una solución alcalina a alta temperatura para el vaciamiento del contenido celular, con una posterior acidificación y coloración con azul de tripán.…”

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Detección de hongos micorrícicos arbusculares en la hojarasca de distintas especies arbóreas: evaluación de tres técnicas de clarificación.

Crescio

Godeas

Silvani

2023

Bol. Soc. Argent. Bot.

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Introducción y objetivos: Los hongos micorrícicos arbusculares (HMA) forman asociaciones simbióticas mutualistas con las raíces de las plantas y se desarrollan en el suelo y hojarasca. Hasta el momento, se ha empleado una única técnica de clarificación en hojarasca para el estudio de los HMA, pero dada la gran variabilidad anatómica y bioquímica de las hojas, es necesario analizar otras metodologías. En este trabajo se evaluaron y ajustaron tres técnicas de clarificación en hojarasca de distintas especies arbóreas para la detección de HMA. M&M: Se recolectó hojarasca de Quercus robur, Tipuana tipu, Ulmus minor, Fraxinus pennsylvanica, Platanus acerifolia, Laurus nobilis, Populus alba and Melia azedarach de la superficie del suelo en dos parques de la ciudad de Buenos Aires. Además, se inoculó hojarasca de F. pennsylvanica con Rhizoglomus intraradices en un cultivo bajo condiciones semicontroladas. Fueron evaluadas tres técnicas de clarificación: “5 – 5 – 5” de Arambarri (2018), Phillips & Hayman (1970) y Peterson et al. (2008), y se ajustaron modificando la duración y condiciones de exposición a los reactivos. Resultados: La técnica de clarificación propuesta por Peterson et al. (2008) fue la más apropiada para todas las hojarascas evaluadas, dado que se obtuvo una eficaz clarificación, conservación de la estructura foliar y la visualización de esporas e hifas de HMA. Conclusión: La selección adecuada de la técnica depende de la calidad de la hojarasca. La optimización del método de Peterson et al. (2008) permitió detectar estructuras de HMA en la hojarasca delicada de F. pennsylvanica y T. tipu.

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Occurrence of arbuscular mycorrhizal fungi in leaf litter and roots of shaded coffee plantations under organic and conventional management

Abstract: How to cite: Díaz-Ariza LA, Rivera EL, Sánchez N. Occurrence of arbuscular mycorrhizal fungi in leaf litter and roots of shaded coffee plantations under organic and conventional management. Rev Bras Cienc Solo. 2021;45:e0200110.

Cited by 5 publications

References 33 publications

Structure of AMF Community in an Agroforestry System of Coffee and Macauba Palm

Structure of AMF Community in an Agroforestry System of Coffee and Macauba Palm

Fungal diversity in shade-coffee plantations in Soconusco, Mexico

Detección de hongos micorrícicos arbusculares en la hojarasca de distintas especies arbóreas: evaluación de tres técnicas de clarificación.

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