Species richness of arbuscular mycorrhizal fungi in forests with Araucaria in Southern Brazil

Zandavalli, Roberta Boscaini; Stürmer, Sidney Luiz; Dillenburg, Lúcia Rebello

doi:10.1590/s2236-89062008000100003

Cited by 12 publications

(12 citation statements)

References 15 publications

(23 reference statements)

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“…Carneiro et al (2009) also found lower sporulation under native vegetation of Cerrado, for both sandy soil, similar to that of the present study, and clayey soil. A similar pattern was also observed by Sturmer & Siqueira (2011) in the Amazon biome, by Lima et al (2007) in areas of Caatinga and Zandavalli et al (2008) in Araucaria forests in Southern Brazil. According to Lima et al (2007), the negative anthropic interference has different effects in the study on variations in each system; while the increase in degradation level stimulated AMF multiplication in areas of native vegetation, the opposite effect occurred in crop areas.…”

Section: Resultssupporting

confidence: 82%

Land use and vegetation cover on native symbionts and interactions with cowpea

Rocha

Santos

et al. 2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TArbuscular mycorrhizal fungi and rhizobia are important components of agroecosystems and they respond to human interference. The objective of this study was to investigate native communities of those microorganisms in soil collected under the native forest, four pastures (Brachiaria brizantha, Panicum maximum, Arachis pintoi and Stylosanthes guianensis) and a fallow soil after maize cultivation, in interaction with cowpea (Vigna unguculata). The cowpea grew in a greenhouse until flowering. They were randomly distributed depending on soil, in five replications. The lowest mycorrhizal fungi sporulation and mycorrhizal root colonization occurred under the Panicum and forest soil. In the soils under forest and Stylosanthes, the cowpea did not exhibit nodules and grew less. Among the anthropized areas, the effect was variable, with stimulus to the multiplication and symbiosis of these microorganisms, except in areas of Panicum and Stylosanthes. When the native vegetation is substituted by pasture or farming, the mycorrhizal fungi and rhizobia proliferation predominate. However, the effect and its magnitude depends on the grown plant species, with reflects on the plant species in succession, such as the cowpea.Uso do solo e coberturas vegetais sobre simbiontes nativos e interações com o feijão caupi R E S U M O Fungos micorrízicos arbusculares (FMA) e rizóbios são componentes importantes dos agroecossistemas e respondem à interferência antrópica. O objetivo deste trabalho foi estudar comunidades nativas desses microrganismos em solo coletado sob floresta nativa, quatro áreas de pasto (Brachiaria brizantha, Panicum maximum, Arachis pintoi e Stylosanthes guianensis) e uma área de pousio após lavoura de milho, em interação com o feijão caupi (Vigna unguculata). O caupi cresceu em casa de vegetação até o florescimento, distribuído ao acaso em função do solo, com cinco repetições. A esporulação e a colonização radicular por FMA foram mais baixas no solo das áreas de Panicum e floresta. No solo da floresta e com Stylosanthes, o caupi não nodulou e apresentou menor desenvolvimento. Dentre as áreas antropizadas o efeito foi variável, com estímulo à multiplicação e simbiose desses microrganismos, exceto nas áreas de Panicum e Stylosanthes. Ao substituir a vegetação nativa de floresta por pasto ou lavoura predominam a multiplicação dos FMA e os rizóbios nativos. Entretanto, o efeito e sua magnitude dependem da espécie vegetal cultivada, com reflexo sobre a espécie vegetal em sucessão, a exemplo do caupi.

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Section: Resultssupporting

confidence: 82%

Land use and vegetation cover on native symbionts and interactions with cowpea

Rocha

Santos

et al. 2017

Rev. bras. eng. agríc. ambient.

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“…Previous studies indicated that araucaria is capable of supporting AMF symbiosis with a greater number of different fungal species [11,[22][23][24][25] than that we found in this experiment. To date, araucaria AMF spore richness varied from 8 [23] to 13 [11] in forests of the State of Rio Grande do Sul and from 26 [24] to 58 [25] in forests of Sao Paulo. The variation in spore AMF richness has been frequently attributed to heterogeneity in soil habitat and to the variable capacity of AMF species to adapt to climate and soil in different regions [10,13].…”

Section: Discussioncontrasting

confidence: 47%

“…Pioneer studies already reported AMF in fine araucaria roots [9]; however, it was only recently that the AMF has been considered as a strategy to increase araucaria growth under nursery conditions [10,11]. In fact, the studies performed so far show two important facts: first, that araucaria is colonized by a large and diverse number of AMF species [10,12]; and second that the araucaria positively respond to inoculation of some AMF species, both in high and low P supply [13].…”

Section: Introductionmentioning

confidence: 99%

Colonization and Spore Richness of Arbuscular Mycorrhizal Fungi in Araucaria Nursery Seedlings in Curitiba, Brazil

Vilcatoma-Medina

Kaschuk

Zanette

2018

International Journal of Agronomy

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Araucaria or Paraná pine [Araucaria angustifolia (Bertol.) Kuntze, 1898] is an endangered timber tree species of Atlantic Forest that naturally forms symbiosis with arbuscular mycorrhizal fungi (AMF). The objective of this experiment was to evaluate AMF colonization and spore AMF richness in araucaria seedlings produced in nursery at the metropolitan region of Curitiba, Brazil, with the interest of identifying a taxonomical AMF group. For that, soil and fine roots of 6-month-, 1-year-, 2-year-, 3-year-, and 5-year-old araucaria seedlings were sampled and evaluated. Evaluations indicated that araucaria seedlings were well colonized by AMF (with rates varying from almost 50 to over 85%) and produced an abundant number of mycorrhizal spores (from 344 to 676 spores per seedling). Samples contained spores of the species Acaulospora scrobiculata, Dentiscutata heterogama, and Glomus spinuliferum and unidentified species of genera Gigaspora and Glomus. The Glomus genus was the most abundant kind of AMF spores found under nursery conditions. Therefore, the experiment evidenced that Glomus is a promising genus candidate for being used as AMF inoculant in production of araucaria seedlings.

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“…A. foevata was found in areas of commercial reforestation of Pinus taeda (Zandavalli et al, 2008), in areas with Eucalyptus grandis Scotti, 2008), E. camaldulensis (Pagano et al, 2009), E. urophylla (Santos et al, 2013). G. macrocarpum occurred in commercial forest species of E. camaldulensis, E. grandis, M. domestica, M. prunifolia, P. taeda and S. virgata, in both monocultures and consortium forest plantations (Table 1).…”

Section: Cernementioning

confidence: 99%