ArticleScientific reports2022
Root exudate composition reflects drought severity gradient in blue grama (Bouteloua gracilis).
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.
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Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Drought stress increases total C released from roots.Annals of botany · 2026Pooled it
- Microbial Biofertilizers for Salinity Stress Mitigation in Hydroponic Systems.Current issues in molecular biology · 2025Review
- Unraveling the chemical communication of root exudates and allelopathy for sustainable ecology and agriculture.Antonie van Leeuwenhoek · 2025Review
- Soil bacterial responses to experimental warming and drought across winter wheat growth stages in the North China Plain.Frontiers in plant science · 2025Article
- Aeroponic approach for nondestructive root exudate collection and simulation of variable water stress trialed on cotton (Gossypium hirsutum).Scientific reports · 2024Article
- Drought stimulates root exudation of organic nitrogen in cotton (Frontiers in plant science · 2024Article
- Carboxylic acid accumulation and secretion contribute to the alkali-stress tolerance of halophyteFrontiers in plant science · 2024Article
- Climate change impacts on plant pathogens, food security and paths forward.Nature reviews. Microbiology · 2023Review
- Severe and mild drought cause distinct phylogenetically linked shifts in the blue grama (Frontiers in microbiomes · 2023Article
- Progressive drought alters the root exudate metabolome and differentially activates metabolic pathways in cotton (Frontiers in plant science · 2023Article
- Article
- Is ABA the exogenous vector of interplant drought cuing?Plant signaling & behavior · 2022Article
Corrections and comments
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plant survival during environmental stress greatly affects ecosystem carbon (C) cycling, and plant-microbe interactions are central to plant stress survival. The release of C-rich root exudates is a key mechanism plants use to manage their microbiome, attracting beneficial microbes and/or suppressing harmful microbes to help plants withstand environmental stress. However, a critical knowledge gap is how plants alter root exudate concentration and composition under varying stress levels. In a greenhouse study, we imposed three drought treatments (control, mild, severe) on blue grama (Bouteloua gracilis Kunth Lag. Ex Griffiths), and measured plant physiology and root exudate concentration and composition using GC-MS, NMR, and FTICR. With increasing drought severity, root exudate total C and organic C increased concurrently with declining predawn leaf water potential and photosynthesis. Root exudate composition mirrored the physiological gradient of drought severity treatments. Specific compounds that are known to alter plant drought responses and the rhizosphere microbiome mirrored the drought severity-induced root exudate compositional gradient. Despite reducing C uptake, these plants actively invested C to root exudates with increasing drought severity. Patterns of plant physiology and root exudate concentration and composition co-varied along a gradient of drought severity.
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