Priority colonization of Cinnamomum camphora litter by endophytes affects decomposition rate, fungal community and microbial activities under field conditions

Lin, Yuping; He, Xueli; T, Ma; Han, Guomin; Changguo, Xiang

doi:10.1016/j.pedobi.2015.09.001

Cited by 18 publications

(20 citation statements)

References 72 publications

(99 reference statements)

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“…Our findings are consistent with recent work showing that endophytes in phyllosphere can cause priority effects and play a key role in shaping decomposer communities on leaf litter (Lin et al, ; Voříšková & Baldrian, ). As such, it has been shown that the phyllosphere microbiome (including both endo‐ and epiphytes) can differ between plant species (Persoh, ) and genotypes (Wagner et al, ) and can depend on plant functional traits (Kembel et al, ) and environmental conditions (Kraft et al, ).…”

Section: Discussionsupporting

confidence: 93%

“…This indicates that the phyllosphere microbiome on unsterilized decomposed litter may have provided resistance against invasion by fungi from the species pool in the soil (Mallon, Elsas, & Salles, ). Thus, under natural conditions, where plant litters are unsterilized, the leaf microbiome exerts a priority effect by influencing colonization of the decomposing litter by fungi from the soil (Fukami, ; Fukami et al, ; van der Wal et al, ) and can drive fungal community composition (Lin et al, ; Voříšková & Baldrian, ). Many previous controlled experiments studying HFA have used sterilized litter because elimination of litter communities allows for testing the local adaptation of the soil community (Palozzi & Lindo, ).…”

Section: Discussionmentioning

confidence: 99%

“…When litters have very distinct microbial communities in their home soils, they may experience stronger HFA effects than when communities in home and away soils have overlapping species composition. In addition, if litters take along their home phyllosphere microbiome (which can play a key role in shaping litter decomposer communities; Lin, He, Ma, Han, & Xiang, ; Voříšková & Baldrian, ) to the away soils, then HFA may be reduced because some specialist decomposers could then be introduced into the new habitat on the litter. To date, little is known about the composition of the litter microbiome in home vs. away soils in the context of HFA effects, particularly with regard to the role of the phyllosphere community.…”

Section: Introductionmentioning

confidence: 99%

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Relationships between fungal community composition in decomposing leaf litter and home‐field advantage effects

et al. 2019

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Increasing evidence suggests that specific interactions between microbial decomposers and plant litter, named home‐field advantage (HFA), influence litter breakdown. However, we still have limited understanding of whether HFA relates to specific microbiota, and whether specialized microbes originate from the soil or from the leaf microbiome. Here, we disentangle the roles of soil origin, litter types and the microbial community already present on the leaf litter in determining fungal community composition on decomposing leaf litter and HFA. We collected litters and associated soil samples from a secondary succession gradient ranging from herbaceous vegetation on recently abandoned ex‐arable fields to forest representing the end stage of succession. In a greenhouse, sterilized and unsterilized leaf litters were decomposed for 12 months in soils from early‐ to late‐successional stages according to a full‐factorial design. At the end, we examined fungal community composition on the decomposing litter. Fungal communities on decomposed late‐successional litter in late‐successional soil differed from those in early‐ and mid‐successional stage litter and soil combinations. Soil source had the strongest impact on litter fungal composition when using sterilized litter, while the impact of litter type was strongest when using unsterilized litter. Overall, we observed HFA, as litter decomposition was accelerated in home soils. Increasing HFA did not relate to the dissimilarity in overall fungal composition, but there was increasing dissimilarity in the relative abundance of the most dominant fungal taxon between decomposing litter in home and away soils. We conclude that early‐, mid‐ and late‐succession litter types did not exert strong selection effects on colonization by micro‐organisms from the soil species pool. Instead, fungal community composition on decomposing litter differed substantially between litter types for unsterilized litter, suggesting that the leaf microbiome, either directly or indirectly, is an important determinant of fungal community composition on decomposing leaves. HFA related most strongly to the abundance of the most dominant fungal taxa on the decomposing litter, suggesting that HFA may be attributed to some specific dominant fungi rather than to responses of the whole fungal community. A plain language summary is available for this article.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Relationships between fungal community composition in decomposing leaf litter and home‐field advantage effects

et al. 2019

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“…One such pectinase producers group are saprobic fungi. They play a significant role in the self-maintenance of a balanced ecosystem, mostly through the decomposition of organic matter, using a system of digestive enzymes that are secreted from the cells to the environment (Lin et al, 2015). Furthermore, they can withstand sudden variations in temperature and humidity and sustain biological control in such environment, which turn them promising biological control agents (Köhl et al, 1995).…”

Section: Screening Testmentioning

confidence: 99%

Phialomyces Macrosporus Reduces Cercospora Coffeicola Survival on Symptomatic Coffee Leaves

Laborde

Botelho

Rodríguez

et al. 2019

C.Sci.

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Saprobe fungi and necrotrophic pathogens share the same niche within crop stubble and the search for fungi non-pathogenic to plants that are able to displace the plant pathogens from its overwintering substrate contributes to the disease management. Brown eye spot (Cercospora coffeicola) is among the most important coffee diseases, it is caused by a necrotrophic pathogen that has decaying leaves as its major source of inoculum. We have screened saprobe fungi for the ability to reduce C. coffeicola sporulation and viability and determined the possible mechanisms involved in the observed biocontrol. A selected saprobe fungus, Phialomyces macrosporus, reduced the pathogen’s viability by 40% both in vitro and in vivo. The fungus acts through antibiosis and competition for nutrients. It produced both volatile and non-volatile compounds that inhibited C. coffeicola growth, sporulation, and viability. It also produced the tissue maceration enzyme (polygalacturonase), which reduces the pathogen both in detached leaves or in planta. The reduction in the fungal viability either by the saprobe fungus or its polygalacturonase-fraction supernatant resulted in the reduction of the disease rate. Therefore, P. macrosporus is a potential microbial agent that can be used in an integrated management of brown eye spot through the reduction of the initial inoculum of the pathogen that survives and builds up in infected leaves.

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“…and xylariaceous fungi; see Koide, Osono & Takeda, 2005; Osono, 2006; Korkama-Rajala, Müller & Pennanen, 2008; Osono & Hirose, 2009; Osono & Hirose, 2011; see also Lindahl et al, 2007; Yuan & Chen, 2014). The presence of such fungi can increase respiration rates and lignocellulolytic activity in litter, altering the litter substrate and the activity of subsequent decomposers (see Koide, Osono & Takeda, 2005; Šnajdr et al, 2011; He et al, 2012; Lin et al, 2015). In contrast, other fungi with endophytic life phases may occupy litter only transiently, quickly sporulating from senesced and decomposing leaves to infect living tissues (e.g., Rhabdocline parkeri on Pseudotsuga menziesii and Coccomyes nipponicum on Camellia japonica ; Stone, 1987; Koide, Osono & Takeda, 2005).…”

Section: Introductionmentioning

confidence: 99%

Diversity, taxonomic composition, and functional aspects of fungal communities in living, senesced, and fallen leaves at five sites across North America

U’Ren

Arnold

2016

PeerJ

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BackgroundFungal endophytes inhabit symptomless, living tissues of all major plant lineages to form one of earth’s most prevalent groups of symbionts. Many reproduce from senesced and/or decomposing leaves and can produce extracellular leaf-degrading enzymes, blurring the line between symbiotrophy and saprotrophy. To better understand the endophyte–saprotroph continuum we compared fungal communities and functional traits of focal strains isolated from living leaves to those isolated from leaves after senescence and decomposition, with a focus on foliage of woody plants in five biogeographic provinces ranging from tundra to subtropical scrub forest.MethodsWe cultured fungi from the interior of surface-sterilized leaves that were living at the time of sampling (i.e., endophytes), leaves that were dead and were retained in plant canopies (dead leaf fungi, DLF), and fallen leaves (leaf litter fungi, LLF) from 3–4 species of woody plants in each of five sites in North America. Our sampling encompassed 18 plant species representing two families of Pinophyta and five families of Angiospermae. Diversity and composition of fungal communities within and among leaf life stages, hosts, and sites were compared using ITS-partial LSU rDNA data. We evaluated substrate use and enzyme activity by a subset of fungi isolated only from living tissues vs. fungi isolated only from non-living leaves.ResultsAcross the diverse biomes and plant taxa surveyed here, culturable fungi from living leaves were isolated less frequently and were less diverse than those isolated from non-living leaves. Fungal communities in living leaves also differed detectably in composition from communities in dead leaves and leaf litter within focal sites and host taxa, regardless of differential weighting of rare and abundant fungi. All focal isolates grew on cellulose, lignin, and pectin as sole carbon sources, but none displayed ligninolytic or pectinolytic activity in vitro. Cellulolytic activity differed among fungal classes. Within Dothideomycetes, activity differed significantly between fungi from living vs. non-living leaves, but such differences were not observed in Sordariomycetes.DiscussionAlthough some fungi with endophytic life stages clearly persist for periods of time in leaves after senescence and incorporation into leaf litter, our sampling across diverse biomes and host lineages detected consistent differences between fungal assemblages in living vs. non-living leaves, reflecting incursion by fungi from the leaf exterior after leaf death and as leaves begin to decompose. However, fungi found only in living leaves do not differ consistently in cellulolytic activity from those fungi detected thus far only in dead leaves. Future analyses should consider Basidiomycota in addition to the Ascomycota fungi evaluated here, and should explore more dimensions of functional traits and persistence to further define the endophytism-to-saprotrophy continuum.

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Priority colonization of Cinnamomum camphora litter by endophytes affects decomposition rate, fungal community and microbial activities under field conditions

Cited by 18 publications

References 72 publications

Relationships between fungal community composition in decomposing leaf litter and home‐field advantage effects

Relationships between fungal community composition in decomposing leaf litter and home‐field advantage effects

Phialomyces Macrosporus Reduces Cercospora Coffeicola Survival on Symptomatic Coffee Leaves

Diversity, taxonomic composition, and functional aspects of fungal communities in living, senesced, and fallen leaves at five sites across North America

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