Corticolous myxomycetes assemblages in a seasonally dry tropical forest in Brazil

Vaz, Aline B. M.; Santos, Daniela Silva; Cardoso, Domingos; Berg, Cássio van den; Queiroz, Luciano Paganucci de; Badotti, Fernanda; Fonseca, Paula Luize Camargos; Cavalcanti, L. H.; Góes-Neto, Aristóteles

doi:10.1016/j.myc.2017.04.004

Cited by 5 publications

(3 citation statements)

References 42 publications

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“…Despite these antibiotic properties, many myxomycetes live on the bark surface. As myxomycete species preference for different tree species has been reported in previous studies (Takahashi 2014, Vaz et al 2017), a specific relationship is also presumed to exist between corticolous myxomycetes and a particular tree species.…”

Section: Introductionmentioning

confidence: 55%

Diversity of corticolous myxomycetes in the last glacial refugia of Cryptomeria japonica in Japan

Takahashi¹

2020

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Cryptomeria japonica, commonly known as Japanese cedar, is now widely distributed from glacial refuges to the entire Japanese archipelago, after the last ice age. The bark surface provides a habitat for many corticolous myxomycetes. Although corticolous myxomycetes are known to prefer tree species, the association between myxomycete distribution and host tree (C. japonica) divergence across the refuges has not been investigated. In this study, myxomycete communities in five refuges were assessed and compared with those in 14 peripheral areas. Bark samples were collected from at least 10 trees per site and were subjected to the moist chamber culture method (10 Petri dishes per tree) to examine the myxomycete fruiting bodies strictly. Environmental variables such as geographical location, climate condition, and bark traits (tree size, bark pH, and electric conductivity) were measured. Fruiting bodies appeared in 91% of the cultures, and 32 taxa (31 species and one varie ty) were recorded. Comparison of the communities between refuges and peripheral sites showed six myxomycete species, Arcyria cinerea, Macbrideola argentea, Cribraria minutissima, Clastoderma debaryanum, Physarum viride and Physarum pusillum, were significantly more abundant in the refuges and these communities preserved higher species diversity. By nonmetric multidimensional scaling, the communities in the Pacific side and the Sea of Japan side were ordered based on snow cover depth, in a pattern similar to the phylogenetic distribution of the host tree. Myxomycete groups were identified in the northern region, the Sea of Japan region, and the southern region (including Yakushima Island) of Japan. Thus, the refugial tree populations preserved the myxomycete species diversity on their bark and functioned as an important hotspot for myxomycetes. The distribution of corticolous myxomycetes was associated with the diversification and biogeographical distribution history of their host tree, C. japonica.

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Section: Introductionmentioning

confidence: 55%

Diversity of corticolous myxomycetes in the last glacial refugia of Cryptomeria japonica in Japan

Takahashi¹

2020

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“…in the studies of Dagamac et al (2015aDagamac et al ( , 2015b, Rea-Maminta et al (2015), Macabago et al (2016), Carascal et al (2017), Dagamac et al (2017), and Pecundo et al (2017). Comparably, Vaz et al (2017) obtained a productivity yield of 46.7% from the barks of different trees in a seasonally dry tropical forest in Brazil. However, the result was in contrast with corticolous myxomycetes in temperate forests.…”

Section: Discussionmentioning

confidence: 88%

Influence of cardinal directions on corticolous myxomycetes associated with Swietenia macrophylla King

Policina¹,

Cruz²

2020

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Barks of living trees serve as a microhabitat for a distinct assemblage of myxomycetes, the corticolous myxomycetes. In this study, we sampled 86 living Swietenia macrophylla trees for bark samples at four cardinal directions (North, East, South, West) to prepare 344 moist chambers. Of these, only 134 moist chambers yielded myxomycetes recorded either as fruiting bodies or plasmodia. Our study also recorded a total of 125 determinable fruiting bodies which were identified as belonging to 22 species, 11 genera, and 7 taxonomic orders and with the most number of taxa recorded in the west (17) and south (14), followed by east (12) and north (11) directions. Eleven taxa were recorded as abundant, with three taxa of Licea having the highest number of records. Comparing species composition, only four species were common in all directions. Following statistical analysis, we did not observe any significant differences between the diversity values per cardinal direction.

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“…They play a role as predators of bacteria and fungi in the detritus food web and have an important function in carbon and nutrient cycling ( Stephenson & Rojas, 2017 ). Myxomycetes found on the bark (corticolous myxomycetes) are a distinct ecological group ( Gilbert & Martin, 1933 ; Keller & Brooks, 1973 ) and are closely associated with tree species and particular bark traits ( Everhart, Keller, & Ely, 2008 ; Rollins & Stephenson, 2011 ; Takahashi, 2014 ; Vaz et al., 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Association between corticolous myxomycetes and tree vitality in Cryptomeria japonica

Takahashi

Fukasawa

2022

Mycoscience

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The bark of live trees provides an important microhabitat for corticolous myxomycetes. However, the association between the presence of myxomycetes and health of host trees has not been studied in detail. In this study, we aimed to investigate the relationship between tree vitality and myxomycetes on the bark of Cryptomeria japonica trees in a montane forest in western Japan. The vitality of trees was categorized into four grades based on the visual assessment of tree shape and leaf density in the upper branches. Myxomycetes on the bark surface were examined using the moist chamber culture method. A decline in tree vitality increased bark pH and decreased electrical conductivity of the bark exudates. Seventeen myxomycete species were recorded in 74 C. japonica trees. The structure of myxomycete communities varied between healthy and unhealthy trees, and species diversity increased as the vitality declined. The relative abundance of Cribraria confusa decreased as the vitality declined, while that of Paradiacheopsis solitaria increased. The results showed that acidophilic myxomycetes grew on healthy C. japonica bark, but changes in bark pH associated with vitality decline led to the weakening of acidity and shifted the community structure; thus, corticolous myxomycete diversity was enhanced as tree vitality decline.

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Corticolous myxomycetes assemblages in a seasonally dry tropical forest in Brazil

Cited by 5 publications

References 42 publications

Diversity of corticolous myxomycetes in the last glacial refugia of Cryptomeria japonica in Japan

Diversity of corticolous myxomycetes in the last glacial refugia of Cryptomeria japonica in Japan

Influence of cardinal directions on corticolous myxomycetes associated with Swietenia macrophylla King

Association between corticolous myxomycetes and tree vitality in <i>Cryptomeria japonica</i>

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