Tree Endophytes: Cryptic Drivers of Tropical Forest Diversity

Griffin, Eric A.; Carson, Walter P.

doi:10.1007/978-3-319-89833-9_4

Cited by 29 publications

(21 citation statements)

References 299 publications

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“…This may be because the diverse physiological status of different organs leads to different conditions for fungal endophytes (Aly et al, 2011). For example, plant roots spread in soil that is an important reservoir for fungal endophytes (Griffin and Carson, 2018); thus, in this study, there were more fungal genera found exclusively in the roots than in other organs. Moreover, the colonization rates of fungal endophytes were similar in the scape, leaf and root but were much higher in the bulb (Fig.…”

Section: Discussionmentioning

confidence: 73%

Fungal endophytes promote the accumulation of Amaryllidaceae alkaloids in Lycoris radiata

Zhou

Liu

Wang

et al. 2020

Environmental Microbiology

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Summary Lycoris radiata is a main source of Amaryllidaceae alkaloids; however, the low content of these alkaloids in planta remains a limit to their pharmaceutical development and utilization. The accumulation of secondary metabolites can be enhanced in plants inoculated with fungal endophytes. In this study, we analysed the diversity of culturable fungal endophytes in different organs of L. radiata. Then, by analysing the correlation between the detectable rate of each fungal species and the content of each tested alkaloid, we proposed several fungal candidates implicated in the increase of alkaloid accumulation. This was verified by inoculating these candidates to L. radiata plants. Based on the results of two independent experiments conducted in May 2018 and October 2019, the individual inoculation of nine fungal endophytes significantly increased the total content of the tested alkaloids in the entire L. radiata plants. This is the first study in L. radiata to show that fungal endophytes are able to improve the accumulation of various alkaloids. Therefore, our results provide insights into a better understanding of interactions between plants and fungal endophytes and suggest an effective strategy for enhancing the alkaloid content in the cultivation of L. radiata.

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Section: Discussionmentioning

confidence: 73%

Fungal endophytes promote the accumulation of Amaryllidaceae alkaloids in Lycoris radiata

Zhou

Liu

Wang

et al. 2020

Environmental Microbiology

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“…Different parts of the trees (leaves, stem, bark, roots) serve as unique habitats for a variety of microbial communities that can live either as epiphytes on the plant surface, or as endophytes inside the plant tissues – used here to include also pathogens, as rationalized by Griffin & Carson (2018). Together, different microbes, including bacteria, archaea, and fungi, form the tree microbiome (Terhonen et al ., 2019).…”

Section: Current Understanding Of the Methane Production In Treesmentioning

confidence: 99%

New insight to the role of microbes in the methane exchange in trees: evidence from metagenomic sequencing

Putkinen

Siljanen

Laihonen³

et al. 2021

New Phytologist

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Methane (CH 4 ) exchange in tree stems and canopies and the processes involved are among the least understood components of the global CH 4 cycle. Recent studies have focused on quantifying tree stems as sources of CH 4 and understanding abiotic CH 4 emissions in plant canopies, with the role of microbial in situ CH 4 formation receiving less attention. Moreover, despite initial reports revealing CH 4 consumption, studies have not adequately evaluated the potential of microbial CH 4 oxidation within trees. In this paper, we discuss the current level of understanding on these processes. Further, we demonstrate the potential of novel metagenomic tools in revealing the involvement of microbes in the CH 4 exchange of plants, and particularly in boreal trees. We detected CH 4 -producing methanogens and novel monooxygenases, potentially involved in CH 4 consumption, in coniferous plants. In addition, our field flux measurements from Norway spruce (Picea abies) canopies demonstrate both net CH 4 emissions and uptake, giving further evidence that both production and consumption are relevant to the net CH 4 exchange. Our findings, together with the emerging diversity of novel CH 4 -producing microbial groups, strongly suggest microbial analyses should be integrated in the studies aiming to reveal the processes and drivers behind plant CH 4 exchange.

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“…They play a vital role in enhancing plant nutrient uptake, improving plant growth, and increasing plant tolerance to harsh environment [4][5][6]. In addition, endophytic microbes may exert a crucial impact on plant diversity and community structure via regulating competition and niche differentiation in resource use among different plants [7][8][9]. Endophytic microbial communities are highly variable in different plant organs, and are strongly influenced by host species and environmental factors, as well as plant physiological and biochemical state [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Grazing Affects Bacterial and Fungal Diversities and Communities in the Rhizosphere and Endosphere Compartments of Leymus chinensis through Regulating Nutrient and Ion Distribution

Yang

Chen

et al. 2021

Microorganisms

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Plant-associated endophytic microorganisms are essential to developing successful strategies for sustainable agriculture. Grazing is an effective practice of grassland utilization through regulating multitrophic relationships in natural grasslands. This study was conducted for exploring the effects of grazing on the diversities and communities of bacteria and fungi presented in rhizosphere soils, roots, stems, and leaves of Leymus chinensis (L. chinensis), based on high-throughput sequencing. Grazing increased bacterial diversity but reduced fungal diversity in plant leaves. Further analysis confirmed that the abundance of Chloroflexi, Gemmatimonadota, Nitrospirota, Sordariales, and Pezizales in plant leaves was increased by grazing. The Bray–Curtis similarities of microbial communities in the endosphere were higher under grazing plots than non-grazing plots. Moreover, the bacterial communities were significantly correlated with ions, while the nutrient and negative ions exhibited strong influence on fungal communities. We concluded that grazing-induced changes of microbial diversities and communities in different compartments of a dominant perennial grass (L. chinensis) could be attributed to the nutrient and ion distribution in host plant. The current study highlights the importance of livestock in mediating diversities and communities of endophytic microbes, and will be useful for better understanding the complexity of multitrophic interactions in a grassland ecosystem.

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Tree Endophytes: Cryptic Drivers of Tropical Forest Diversity

Cited by 29 publications

References 299 publications

Fungal endophytes promote the accumulation of Amaryllidaceae alkaloids in Lycoris radiata

Fungal endophytes promote the accumulation of Amaryllidaceae alkaloids in Lycoris radiata

New insight to the role of microbes in the methane exchange in trees: evidence from metagenomic sequencing

Grazing Affects Bacterial and Fungal Diversities and Communities in the Rhizosphere and Endosphere Compartments of Leymus chinensis through Regulating Nutrient and Ion Distribution

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