Disease protection and allelopathic interactions of seed-transmitted endophytic pseudomonads of invasive reed grass (Phragmites australis)

White, James F.; Kingsley, Katheryn I; Kowalski, Kurt P.; Irizarry, Ivelisse; Micci, April; Soares, Marcos Antônio; Bergen, Marshall S.

doi:10.1007/s11104-016-3169-6

Cited by 83 publications

(69 citation statements)

References 43 publications

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“…While others have found specific endophytic bacteria that provide stress tolerance to invasive Phragmites (White et al. ), functional determinations often come from culture studies that can measure plant growth response to individual inoculations. Without using an experimental approach, functional potential can be approximated by looking at specific genes (Hardoim et al.…”

Section: Discussionmentioning

confidence: 99%

Root endophytes and invasiveness: no difference between native and non‐native Phragmites in the Great Lakes Region

et al. 2018

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Microbial interactions could play an important role in plant invasions. If invasive plants associate with relatively more mutualists or fewer pathogens than their native counterparts, then microbial communities could foster plant invasiveness. Studies examining the effects of microbes on invasive plants commonly focus on a single microbial group (e.g., bacteria) or measure only plant response to microbes, not documenting the specific taxa associating with invaders. We surveyed root microbial communities associated with co‐occurring native and non‐native lineages of Phragmites australis, across Michigan, USA. Our aim was to determine whether (1) plant lineage was a stronger predictor of root microbial community composition than environmental variables and (2) the non‐native lineage associated with more mutualistic and/or fewer pathogenic microbes than the native lineage. We used microscopy and culture‐independent molecular methods to examine fungal colonization rate and community composition in three major microbial groups (bacteria, fungi, and oomycetes) within roots. We also used microbial functional databases to assess putative functions of the observed microbial taxa. While fungal colonization of roots was significantly higher in non‐native Phragmites than the native lineage, we found no differences in root microbial community composition or potential function between the two Phragmites lineages. Community composition did differ significantly by site, with soil saturation playing a significant role in structuring communities in all three microbial groups. The relative abundance of some specific bacterial taxa did differ between Phragmites lineages at the phylum and genus level (e.g., Proteobacteria, Firmicutes). Purported function of root fungi and respiratory mode of root bacteria also did not differ between native and non‐native Phragmites. We found no evidence that native and non‐native Phragmites harbored distinct root microbial communities; nor did those communities differ functionally. Therefore, if the trends revealed at our sites are widespread, it is unlikely that total root microbial communities are driving invasion by non‐native Phragmites plants.

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Section: Discussionmentioning

confidence: 99%

Root endophytes and invasiveness: no difference between native and non‐native Phragmites in the Great Lakes Region

et al. 2018

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“…16 The particular mechanisms by which endophytic microbes fill the various functions in plants likely differ depending on the microbe and plant. 16 In this review, we discuss the functions of endophytes, the mechanisms of activities of endophytes, and current and future applications of endophytic microbes in crops.…”

Section: Overview Of Endophytism In Plantsmentioning

confidence: 99%

Review: Endophytic microbes and their potential applications in crop management

White

Kingsley

Zhang

et al. 2019

Pest Management Science

288

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Endophytes are microbes (mostly bacteria and fungi) present asymptomatically in plants. Endophytic microbes are often functional in that they may carry nutrients from the soil into plants, modulate plant development, increase stress tolerance of plants, suppress virulence in pathogens, increase disease resistance in plants, and suppress development of competitor plant species. Endophytic microbes have been shown to: (i) obtain nutrients in soils and transfer nutrients to plants in the rhizophagy cycle and other nutrient‐transfer symbioses; (ii) increase plant growth and development; (iii) reduce oxidative stress of hosts; (iv) protect plants from disease; (v) deter feeding by herbivores; and (vi) suppress growth of competitor plant species. Because of the effective functions of endophytic microbes, we suggest that endophytic microbes may significantly reduce use of agrochemicals (fertilizers, fungicides, insecticides, and herbicides) in the cultivation of crop plants. The loss of endophytic microbes from crop plants during domestication and long‐term cultivation could be remedied by transfer of endophytes from wild relatives of crops to crop species. Increasing atmospheric carbon dioxide levels could reduce the efficiency of the rhizophagy cycle due to repression of reactive oxygen used to extract nutrients from microbes in roots. © 2019 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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“…Shearin et al (2018) and White et al (2018) demonstrate that fungal endophytes such as Phoma, Penicillium, Alternaria as well as various pseudomonads contribute to increased seed germination and growth of invasive Phragmites australis (Cav.) Trin.…”

Section: Native Seed Endophytes Can Increase Plant Growth and Healthmentioning

confidence: 99%

Editorial special issue: the soil, the seed, the microbes and the plant

et al. 2018

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Disease protection and allelopathic interactions of seed-transmitted endophytic pseudomonads of invasive reed grass (Phragmites australis)

Cited by 83 publications

References 43 publications

Root endophytes and invasiveness: no difference between native and non‐native Phragmites in the Great Lakes Region

Root endophytes and invasiveness: no difference between native and non‐native Phragmites in the Great Lakes Region

Review: Endophytic microbes and their potential applications in crop management

Editorial special issue: the soil, the seed, the microbes and the plant

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