Abundance of human pathogen genes in the phyllosphere of four landscape plants

Zhao, Dandan; Liu, Guijia; Wang, Xuefei; Daraz, Umar; Sun, Qiang

doi:10.1016/j.jenvman.2019.109933

Cited by 10 publications

(7 citation statements)

References 48 publications

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“…For example, Imperato et al [25] found a higher number of bacteria possessing genes encoding enzymes with predicted aromatic degradative activity and properties beneficial to plants (i.e., plant growth promotion) on leaves from an untouched forest than from urban areas. In addition, both air pollution and plant host species identity influence the amount of human pathogenic genes in phyllosphere microbiota [34]. This result suggests that specific plant species could be used in green spaces to reduce the number of pathogenic genes in urban environments [34].…”

Section: Urbanizationmentioning

confidence: 99%

“…In addition, both air pollution and plant host species identity influence the amount of human pathogenic genes in phyllosphere microbiota [34]. This result suggests that specific plant species could be used in green spaces to reduce the number of pathogenic genes in urban environments [34]. It has also been shown that the prevalence of atmospheric hydrocarbons in cities (derived mostly from fossil fuel combustion) could favor the selection of hydrocarbon degrading bacteria by leaf microbes [35].…”

Section: Urbanizationmentioning

confidence: 99%

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Plant-microbe interactions in the phyllosphere: facing challenges of the anthropocene

Perreault

Laforest‐Lapointe

2021

The ISME Journal

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Global change is a defining feature of the Anthropocene, the current human-dominated epoch, and poses imminent threats to ecosystem dynamics and services such as plant productivity, biodiversity, and environmental regulation. In this era, terrestrial ecosystems are experiencing perturbations linked to direct habitat modifications as well as indirect effects of global change on species distribution and extreme abiotic conditions. Microorganisms represent an important reservoir of biodiversity that can influence macro-organisms as they face habitat loss, rising atmospheric CO2 concentration, pollution, global warming, and increased frequency of drought. Plant-microbe interactions in the phyllosphere have been shown to support plant growth and increase host resistance to biotic and abiotic stresses. Here, we review how plant-microbe interactions in the phyllosphere can influence host survival and fitness in the context of global change. We highlight evidence that plant-microbe interactions (1) improve urban pollution remediation through the degradation of pollutants such as ultrafine particulate matter, black carbon, and atmospheric hydrocarbons, (2) have contrasting impacts on plant species range shifts through the loss of symbionts or pathogens, and (3) drive plant host adaptation to drought and warming. Finally, we discuss how key community ecology processes could drive plant-microbe interactions facing challenges of the Anthropocene.

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Section: Urbanizationmentioning

confidence: 99%

Section: Urbanizationmentioning

confidence: 99%

Plant-microbe interactions in the phyllosphere: facing challenges of the anthropocene

Perreault

Laforest‐Lapointe

2021

The ISME Journal

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“…In a manipulation experiment with Ag nanoparticles, the bacterial and fungal leaf community was altered, favoring anaerobic bacteria and stress-tolerant taxa [20]. Pollution-induced alterations of the microbial community may increase the amount of pathogenic genes and the fraction of pathogenic microorganisms in the phylloplane [26,27].…”

Section: Introductionmentioning

confidence: 99%

Phylloplane Biodiversity and Activity in the City at Different Distances from the Traffic Pollution Source

Ivashchenko

Korneykova

Сазонова

et al. 2022

Plants

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The phylloplane is an integrated part of green infrastructure which interacts with plant health. Taxonomic characterization of the phylloplane with the aim to link it to ecosystem functioning under anthropogenic pressure is not sufficient because only active microorganisms drive biochemical processes. Activity of the phylloplane remains largely overlooked. We aimed to study the interactions among the biological characteristics of the phylloplane: taxonomic diversity, functional diversity and activity, and the pollution grade. Leaves of Betula pendula were sampled in Moscow at increasing distances from the road. For determination of phylloplane activity and functional diversity, a MicroResp tool was utilized. Taxonomic diversity of the phylloplane was assessed with a combination of microorganism cultivation and molecular techniques. Increase of anthropogenic load resulted in higher microbial respiration and lower DNA amount, which could be viewed as relative inefficiency of phylloplane functioning in comparison to less contaminated areas. Taxonomic diversity declined with road vicinity, similar to the functional diversity pattern. The content of Zn in leaf dust better explained the variation in phylloplane activity and the amount of DNA. Functional diversity was linked to variation in nutrient content. The fraction of pathogenic fungi of the phylloplane was not correlated with any of the studied elements, while it was significantly high at the roadsides. The bacterial classes Gammaproteobacteria and Cytophagia, as well as the Dothideomycetes class of fungi, are exposed to the maximal effect of distance from the highway. This study demonstrated the sensitivity of the phylloplane to road vicinity, which combines the effects of contaminants (mainly Zn according to this study) and potential stressful air microclimatic conditions (e.g., low relative air humidity, high temperature, and UV level). Microbial activity and taxonomic diversity of the phylloplane could be considered as an additional tool for bioindication.

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“…The genus Photinia belongs to Maleae (Rosaceae) and comprises approximately 60 species (Robertson et al 1991;Lu and Spongberg 2003). They are widespread landscape tree species resistant to pruning and air pollution (Mattei et al 2017;Mori et al 2018), and many were cultivated for gardening (Zhao et al 2020). Photinia davidsoniae Rehder & E.H.Wilson (referred to as P. davidsoniae in the following text) is an evergreen plant species, which grows in thickets at altitudes of 600-1000 m and mainly distributes in southern China and Southeast Asia (Lu and Spongberg 2003).…”

Section: Introductionmentioning

confidence: 99%

The complete chloroplast genome of Photinia davidsoniae: molecular structures and comparative analysis

Jiang

Wang

et al. 2021

Mitochondrial DNA Part B

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Photinia davidsoniae is a common ornamental arbor in the genus Photinia (family Rosaceae). Here, we sequenced and assembled the complete plastome of P. davidsoniae using the next-generation DNA sequencing technology. And we then compared it with nine Photinia species using a range of bioinformatics software tools. The ten plastomes had sizes ranging from 159,230 bp for P. beckii to 160,346 bp for P. davidsoniae. They all had a conservative quartile structure. It contained two single-copy regions: a large single-copy (LSC) region, a small single-copy (SSC) region, and a pair of inverted repeat (IR) regions. Each of the plastomes encoded 113 unique genes, including 79 protein-coding genes, four rRNA genes, and 30 tRNA genes. Furthermore, we detected six hypervariable regions (matK-rps16, rpoB-trnC, trnT-psbD, ndhC-trnV, psbE-petL, ndhF-rpl32-trnL), which could be used as potential molecular markers. We constructed two phylogenetic trees with plastomes or concatenated protein sequences of 25 species of 8 genera of Rosaceae. The tree constructed with complete plastomes has much stronger support. The results placed P. davidsoniae in the upper part of the phylogenetic tree. It shows that P. davidsoniae and P. lanuginosa are closely related. In summary, the plastomes of Photinia are conserved overall but carry significant minor variations, as expected. The results will be indispensable for distinguishing species, understanding the interspecific diversity, and elucidating the evolutionary processes of Photinia species.

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Abundance of human pathogen genes in the phyllosphere of four landscape plants

Cited by 10 publications

References 48 publications

Plant-microbe interactions in the phyllosphere: facing challenges of the anthropocene

Plant-microbe interactions in the phyllosphere: facing challenges of the anthropocene

Phylloplane Biodiversity and Activity in the City at Different Distances from the Traffic Pollution Source

The complete chloroplast genome of Photinia davidsoniae: molecular structures and comparative analysis

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