Effect of Neotyphodium endophyte-tall fescue symbiosis on mineralogical changes in clay-sized phlogopite and muscovite

Khayamim, F; Khademi, Hossein; Rahimmalek, Mehdi

doi:10.1007/s11104-010-0659-9

Cited by 14 publications

(3 citation statements)

References 49 publications

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“…Epichloë endophyte‐infected plants have higher SOC in the rhizosphere than endophyte‐free plants in a 15‐year trial (Franzluebbers et al, 1999). In the present study, we demonstrated that litter containing Epichloë endophyte altered the contents of SOC, TN, TP, AN and NN in non‐rhizosphere soil, which was consistent with other studies demonstrating that Epichloë endophyte changes soil properties due to litter decomposition (Franzluebbers et al, 1999; Khayamim et al, 2011; Zhou et al, 2014). However, this paper is the first research to evaluate the effect of litter containing Epichloë endophyte on chemical and biological properties in non‐rhizosphere soil.…”

Section: Discussionsupporting

confidence: 92%

Soil fungal and bacterial communities are altered by the incorporation of leaf litter containing a fungal endophyte

Jin

Wei

White

et al. 2022

European J Soil Science

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Litter decomposition plays a key role in nutrient cycling across ecosystems. The presence of Epichloë endophytes in grass plants affects litter decomposition. The overall effects of leaf litter containing Epichloë endophytes on the chemical and biological properties in non-rhizosphere soils have not previously been examined.The current study is aimed to understand the effect of direct incorporation of leaf litter from Epichloë endophyte-infected perennial ryegrass (Lolium perenne) on soil chemical characteristics, and fungal and bacterial biodiversity. Firstly, fresh leaf litter of the endophyte Epichloë festucae var. lolii-infected (E+) and endophyte-free (EÀ) L. perenne were incorporated into the soil, and then samples were collected from E+ and EÀ litter incorporated soil at T 0 , T 1 , T 2 and T 3 (0, 120, 240 and 360 days) for chemical and sequencing analyses. The Epichloë-containing leaf litter incorporation changed the soil microbial environment by enhancing the soil organic carbon (SOC), total nitrogen (TN), total phosphorus, NH 4 + -N and NO 3 À -N contents, and acidifying soil pH. The endophyte had stronger effects on soil bacteria than soil fungi when the litter was determined with and without the endophyte. Litter containing the Epichloë endophyte significantly increased the absolute abundance of the 16S rRNA gene and relative abundances of the Actinobacteria, Nitrospirae and Gemmatimonadetes, while significantly decreasing the relative abundances of the Planctomycetes and Rokubacteria and the diversity in soil bacteria community. There was no significant effect of endophytecontaining leaf litter incorporation on the absolute abundance and diversity of the soil fungal community except the increment in the relative abundance of Rozellomycota. Soil pH and the SOC-to-TN ratio (C:N) were the main factors influencing the soil bacterial community, and the presence of E. festucae var. lolii was directly and positively related to the soil bacterial diversity. The current study established that Epichloë endophyte-infection altered the abundance and diversity of the soil bacterial community by affecting leaf litter quality and increasing soil chemical properties after litter incorporation.Yuanyuan Jin and Xuekai Wei contributed equally to this study.Yuanyuan Jin and Xuekai Wei should be considered the joint first author.

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Section: Discussionsupporting

confidence: 92%

Soil fungal and bacterial communities are altered by the incorporation of leaf litter containing a fungal endophyte

Jin

Wei

White

et al. 2022

European J Soil Science

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“…The main mechanisms in the dissolution of silicates by SDB bacteria are exudation of excess proton and organic ligands (Barker et al 1998;Vandevivere et al 1994). Khayamim et al (2010) demonstrated that the vermiculization process can be promoted by proton-exchange process. Marie-Pierre et al (2009) demonstrated that biological activity can significantly influence the dissolution of Ca-bearing minerals such as labradorite and apatite and the dissolution of these minerals can occur under low Ca concentration.…”

Section: Discussionmentioning

confidence: 99%

Effect of canola rhizosphere and silicate dissolving bacteria on the weathering and K release from indigenous glauconite shale

et al. 2015

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A pot experiment was carried out under greenhouse conditions with canola plants growing in a mixture of quartz (as the filling materials), glauconitic shale, and silicate dissolving bacteria. During a period of 180 days, pots were irrigated with K (+K) or without K (−K). At the end of the growing period, plants were harvested and their K uptake determined by flame photometer following dry ash extraction. The clay-sized particles in each pot were studied by X-ray diffractometer. Vermiculization of glauconite occurred with both nutrient solutions. The intensity of the 14 Å peak in the treatment with silicate dissolving bacteria and K-free nutrient solution was higher than with the complete nutrient solution. Under the treatment with silicate dissolving bacteria and Kfree nutrient solution the 14/10 Å peak ratio was 7.58 and it was statistically different at 95 % level compared to the peaks of the other treatments. Weathering of mica by K release from mica interlayers and the formation of vermiculite were the major process occurring in the rhizosphere. The results of mineralogical studies are therefore in line with the findings of greenhouse experiment both confirming that the application of glauconite can be beneficial to plant mainly through K release from mineral weathering even in a single growth period.

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“…Epichloë endophyte infection can induce the differential expression of alkaloids and root metabolites in host plants, to alter the properties of rhizospheric soil (Handayani et al., 2011; Hecke et al., 2005). The effects of endophyte infection on the soil properties of host plants were highly variable, mainly dependent on host plant types and endophyte strain genotypes (Hayamim et al., 2010). Additionally, the effects Epichloë endophyte on soil chemical properties in the rhizospheric of host plants are closely related to the length of treatment cycle, treatment types, and environmental conditions, which supports our results (Franzluebbers & Stuedemann, 2002; Franzluebbers et al., 1999; Iqbal et al., 2012; Rojas et al., 2016).…”

Section: Discussionmentioning

confidence: 99%

Effects of Achnatherum inebrians ecotypes and endophyte status on plant growth, plant nutrient, soil fertility and soil microbial community

Jin

Chen

et al. 2022

Soil Science Soc of Amer J

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Effects of endophytes infection on bacterial and fungal communities in soil have been extensively studied. However, how the presence of Epichloë endophytes and environmental factors influence the nitrifying genes abundance of ammonia-oxidizing archaea (amoA-AOA) and bacteria (amoA-AOB), and denitrifying genes abundances of N reduction (nirS and nirK) and nitrous oxide reduction (nosZ) in soil is unclear. In the study, the copy number of 16S rRNA, 18S rRNA, amoA-AOB, amoA-AOA, nirS, nirK, and nosZ genes in rhizosphere soils of drunken horse grass [Achnatherum inebrians (Hance) Keng] with the infected (E+) and uninfected (E-)endophyte five ecotypes after 3 yr field cultivation were investigated using quantitative polymerase chain reaction (PCR). The effects of A. inebrians in geographic source on plant growth, soil fertility, and microbial community was greater than in different endophyte status. The copy number of the 16S rRNA, amoA-AOA, nirK, and nosZ genes from different ecotypes (Qinghai, QH; and Tianzhu, TZ) were significantly affected by Epichloë endophyte. The copy number of the 16S rRNA, 18S rRNA, amoA-AOB. amoA-AOA, nirS, nirK, and nosZ genes positively related to soil pH, moisture, C/N ratio, and soil ammonium nitrogen (NH 4 + ), and soil organic carbon (SOC) contents.Endophyte infection significantly increased plant biomass of A. inebrians from QH ecotype. Plant total chlorophyll and soil nitrate nitrogen (NO 3 -) were the main factor for the Epichloë endophyte and ecotype to affect plant dry weight. Further studies are required to confirm the regulation of soil NO 3 as an important factor in Epichloë endophyte affecting plant growth and the soil microbial community structure in relation to N cycling.

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Effect of Neotyphodium endophyte-tall fescue symbiosis on mineralogical changes in clay-sized phlogopite and muscovite

Cited by 14 publications

References 49 publications

Soil fungal and bacterial communities are altered by the incorporation of leaf litter containing a fungal endophyte

Soil fungal and bacterial communities are altered by the incorporation of leaf litter containing a fungal endophyte

Effect of canola rhizosphere and silicate dissolving bacteria on the weathering and K release from indigenous glauconite shale

Effects of Achnatherum inebrians ecotypes and endophyte status on plant growth, plant nutrient, soil fertility and soil microbial community

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