drought and plant litter chemistry alter microbial gene
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1 Determinehowmicrobialcommuniesand funconrespondtoenvironmentalchange Nitrogen Drought! Physiology! Microbial! community! change Plant! community! change Func7on! (lier!decay) indirect indirect direct Prediction: drought reduces litter decay nitrogen increases litter decay
The Harmful Effects of Petrochemicals on the Environment
Apr 25 2017Petrochemicals are found in a wide array of items from plastic wrap and trash bags to plastic bottles Because humans rely so heavily on petrochemicals their production is high affecting the environment via oil spills on land and sea and fossil fuel combustion emissions
Molecular analysis of fungal communities and laccase genes
NIKI PAPANIKOLAOU ANDREA J BRITTON RACHEL C HELLIWELL DAVID JOHNSON Nitrogen deposition vegetation burning and climate warming act independently on microbial community structure and enzyme activity associated with decomposing litter in low‐alpine heath Global Change Biology 10 1111/j 1365-2486 2010 02196 x 16 11 (3120-3132) (2010)
Forest Ecosytem Dynamics and Microbial Ecology
Climate change (elevated carbon dioxide and atmospheric nitrogen deposition) are altering plant growth and the input of organic substrates to soil We are working to understand how changes in plant growth as climate changes will alter the composition and function of soil microbial communities In turn we are using information on microbial physiology to understand how
Inhibition of microbial biofuel production in drought
Nov 08 2016Chemical genomic analysis of hydrolysates reveals a distinct pattern for drought-year switchgrass hydrolysate Chemical genomic analysis was used to measure the relative fitness of ~3500 single-gene deletion yeast strains [] in the hydrolysates compared to synthetic hydrolysate [] (Additional file 1) This analysis revealed a growth sensitivity profile of the 2012
Forests
Soil microorganisms play crucial roles between plants and soil following afforestation However the relationship between the microbial community and carbon:nitrogen:phosphorus (C:N:P) stoichiometry in the plantndash soilndash microbe continuum remains unclear In this study we investigated this relationship by collecting plant and soil samples from Caragana
Drought increases the frequencies of fungal functional
Drought can directly alter gene profiles via changes in the plot environment or indirectly shift them via changes in the microbial community or plant litter chemistry (a) We tested predictions from three hypotheses each related to a specific effect (b) Only the direct effect of drought in the plot environment altered fungal functional genes
Drought and plant litter chemistry alter microbial gene
Drought and plant litter chemistry alter microbial gene expression and metabolite production we present metatranscriptomic and metabolomic data on the physiological response of in situ microbial communities on plant litter to long-term drought in Californian grass and shrub ecosystems a trade off between microbial drought stress
Plant and Soil
Aug 06 2020Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences and that enhance our mechanistic understanding of plant-soil interactions This includes both fundamental and applied aspects of mineral nutrition plant-water relations symbiotic and pathogenic plant-microbe interactions root anatomy and morphology
Silver Nanoparticles Alter Soil Microbial Community
The rapid development of nanotechnology makes the environmental impact assessment a necessity to ensure the sustainable use of engineered nanomaterials Here silver nanoparticles (AgNPs) at 100 mg/kg were added to soils in the absence or presence of cucumber (Cucumis sativa) plants for 60 days The response of the soil microbial community and associated soil
Rhizosphere Interactions
Mar 13 2016Plants are able to alter microbial habitat by creating small chemical niches via root-secreted phytochemicals In this paper Pii et al studied developmentally distinct plants that obtain nutrients in different ways (tomato and barley) and their respective root exudates' effects on the surrounding rhizosphere
Evolutionary ecology of plant–microbe interactions: soil
Jun 10 2011Interactive effects of soil moisture and plant (a c) or microbe treatments (b d) on soil microbial structure Fungal operational taxonomic unit (OTU) richness in low (open bars) and high (closed bars) soil moisture mesocosms with and without plants (i e Brassica rapa ) (a) or in the simplified vs complex microbial communities (b) Bacterial OTU richness in mesocosms with or without plants
Response and resilience of microbial functions to global
Our research will take place in a grassland ecosystem in Southern California that hosts an ongoing environmental change experiment funded by DOE We will assess microbial and enzyme responses to drought and nitrogen addition two environmental changes likely to affect an increasing number of terrestrial ecosystems locally and globally (Figure 1)
Integrative Network Modeling Reveals Key Drought
Researchers performed a combined analysis of metabolic and gene co-expression networks to explore how the soil microbiome responds to changes in moisture and nutrient conditions Integrative Network Modeling Reveals Key Drought-Associated Genes Key in the Soil Microbiome | PNNL
Rhizosheath microbial community assembly of sympatric
Dec 04 2018The rhizosheath-root system is an adaptive trait of sandy-desert speargrasses in response to unfavourable moisture and nutritional conditions Under the deserts' polyextreme conditions plants interact with edaphic microorganisms that positively affect their fitness and resistance However the trophic simplicity and environmental harshness of desert ecosystems
Drought and Plant Litter Chemistry Alter Microbial Gene
Drought and Plant Litter Chemistry Alter Microbial Gene Expression and Metabolite Production Ashish A Malik 1 2 Tami Swenson 3 Claudia Weihe 4 Eric W Morrison 5 Jennifer B H Martiny 4 Eoin L Brodie 6 7 Trent R Northen 3 Steven D Allison 4 5
Soil microbial community responses to climate extremes
Jan 27 2020Finally a severe drought equivalent to a 100-year drought event caused a strong and long-lasting shift in soil microbial community composition and diversity and the structure of bacterial networks which was also associated with changes in microbial function in terms of nitrogen cycling genes These studies demonstrate that climate
Microbial composition alters the response of litter
To investigate the potential for such interactive effects on leaf litter decomposition we manipulated microbial composition and three environmental factors predicted to change in the future (moisture nitrogen availability and temperature) We isolated fungal and bacterial taxa from leaf litter and used them to construct unique communities
Forests
Soil microorganisms play crucial roles between plants and soil following afforestation However the relationship between the microbial community and carbon:nitrogen:phosphorus (C:N:P) stoichiometry in the plantndash soilndash microbe continuum remains unclear In this study we investigated this relationship by collecting plant and soil samples from Caragana
Response of the Soil Microbial Community to Changes in
INTRODUCTION Soil and litter microbial communities are responsible for the majority of decomposition and nutrient mineralization in terrestrial ecosystems (2 15 26) and their abundance community structure and activity are often directly influenced by abiotic factors such as temperature and precipitation (1 12 48 56) Because global climate change may have
Drought and salinity: A comparison of their effects on
Jul 27 2005A better understanding of the role of mineral nutrients in plant resistance to drought and salinity will contribute to an improved fertilizer management in arid and semi‐arid areas and in regions suffering from temporary drought This paper reviews the current state of knowledge on plant nutrition under drought and salinity conditions
Drought and plant litter chemistry alter microbial gene
However we lack a detailed understanding of the drought stress response of microbial decomposers Here we present metatranscriptomic and metabolomic data on the physiological response of in situ microbial communities on plant litter to long-term drought in Californian grass and shrub ecosystems
Responses of soil microbial functional genes to global
Responses of soil microbial functional genes to global changes are indirectly influenced by aboveground plant biomass variation Hui Li a b Shan Yang a Zhuwen Xu a Qingyun Yan b c Xiaobin Li a Joy D van Nostrand b Zhili He b Fei Yao a Xingguo Han a Jizhong Zhou b d e Ye Deng f ** Yong Jiang a * a CAS Key Laboratory of Forest Ecology and Management
Integrative Network Modeling Reveals Key Drought
Researchers performed a combined analysis of metabolic and gene co-expression networks to explore how the soil microbiome responds to changes in moisture and nutrient conditions Integrative Network Modeling Reveals Key Drought-Associated Genes Key in the Soil Microbiome | PNNL
Annual Removal of Aboveground Plant Biomass Alters Soil
Clipping (i e harvesting aboveground plant biomass) is common in agriculture and for bioenergy production However microbial responses to clipping in the context of climate warming are poorly understood We investigated the interactive effects of grassland warming and clipping on soil properties and plant and microbial communities in particular on microbial functional genes
Microbial legacies alter decomposition in response to
53 2003) Previously we have shown that the leaf litter microbial community is sensitive to 54 simulated drought and nitrogen addition in this grassland (Amend et al 2015 Matulich et 55 al 2015) Bacteria and fungi decompose most plant detritus (litter) in terrestrial
Divergent and convergent modes of interaction between
Apr 12 2017Two opposing evolutionary constraints exert pressure on plant pathogens: one to diversify virulence factors in order to evade plant defenses and the other to retain virulence factors critical for maintaining a compatible interaction with the plant host To better understand how the diversified arsenals of fungal genes promote interaction with the same compatible






