A5059416023- Silicon Effects in Agriculture
- Insect-Plant Interactions and Control
- Plant and animal studies
- Aluminum toxicity and tolerance in plants and animals
- Insect and Pesticide Research
- Plant responses to elevated CO2
- Geochemistry and Elemental Analysis
- Crop Yield and Soil Fertility
- Plant Parasitism and Resistance
- Soil Management and Crop Yield
- Plant Stress Responses and Tolerance
- Atmospheric chemistry and aerosols
- Animal Ecology and Behavior Studies
- Plant biochemistry and biosynthesis
- Forest Ecology and Biodiversity Studies
- Plant and Biological Electrophysiology Studies
- Insect Pest Control Strategies
- Tree-ring climate responses
- GABA and Rice Research
- Heavy Metals in Plants
- Magnetic and Electromagnetic Effects
- Aeolian processes and effects
- Insect behavior and control techniques
- Forest ecology and management
- Plant Genetic and Mutation Studies
University of Bern
2023-2025
Trinity College Dublin
2024-2025
Western Sydney University
2019-2024
Institute of Plant Biology
2023-2024
University of Vermont
2020
The role of plant silicon (Si) in the alleviation abiotic and biotic stress is now widely recognised researched. Amongst stresses, Si known to increase resistance herbivores through biomechanical chemical mechanisms, although latter are indirect remain poorly characterised. Chemical defences principally regulated by several antiherbivore phytohormones. jasmonic acid (JA) signalling pathway particularly important has been linked supplementation, albeit with some contradictory findings. In...
Volatiles emitted by herbivore-attacked plants (senders) can enhance defenses in neighboring (receivers), however, the temporal dynamics of this phenomenon remain poorly studied. Using a custom-built, high-throughput proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS) system, we explored patterns volatile and responses between undamaged maize plants. We found that continuous exposure to natural blends herbivore-induced volatiles results clocked response plants,...
Grasses accumulate large amounts of silicon (Si) which is deposited in trichomes, specialised silica cells and cell walls. This may increase leaf toughness reduce rupture, palatability digestion. Few studies have measured mechanical traits response to Si, thus the effect Si on herbivores can be difficult disentangle from Si-induced changes surface morphology. We assessed effects Brachypodium distachyon (specific area (SLA), thickness, dry matter content (LDMC), relative electrolyte leakage...
Plants perceive herbivory-induced volatiles and respond to them by upregulating their defenses. To date, the organs responsible for volatile perception remain poorly described. Here, we show that responsiveness green leaf (Z)-3-hexenyl acetate (HAC) in terms of emission, transcriptional regulation, jasmonate defense hormone activation is largely constrained younger maize leaves. Older leaves are much less sensitive HAC. In a given leaf, HAC high at immature developmental stages drops off...
ABSTRACT Stress‐induced plant volatiles play an important role in mediating ecological interactions between plants and their environment. The timing location of the inflicted damage is known to influence quality quantity induced volatile emissions. However, how leaf characteristics herbivore feeding behaviour interact shape emissions not well understood. Using a high‐throughput profiling system with high temporal resolution, we examined mechanical on different leaves plant‐level emission...
Plant volatiles shape plant-plant interactions by acting as defense regulators and response factors. While plant volatile biosynthesis is well understood, how their emission regulated remains largely elusive. Here, we show that small peptide signaling regulates induced release in maize. Following herbivore attack, green leaf such (Z)-3-hexenyl acetate (HAC) are released induce terpene indole emissions from neighboring plants. This process accompanied reduced expression of the ZmCLE1E9 gene...
Abstract Silicon (Si) is known to alleviate diverse biotic and abiotic stresses including insect herbivory. Si accumulation in plants, notably the Poaceae, can be induced through stimulation of jasmonic acid (JA) pathway (associated with chewing herbivores). Nevertheless, temporal dynamics as a defence response its consequential effects on carbon‐based defences (e.g. phenolics), particularly short‐term, remain unclear. The model grass Brachypodium distachyon was grown hydroponic solution...
The selection of oviposition sites by female moths is crucial in shaping their progeny performance and survival, consequently determining insect fitness. Selecting suitable plants that promote the referred to as Preference-Performance hypothesis (or 'mother-knows-best'). While root infestation generally reduces leaf herbivores, little known about its impact on oviposition. We investigated whether maize Western corn rootworm (WCR) affects preference larval European borer (ECB). ECB females...
Abstract Changes in insect herbivore performance under elevated atmosphere carbon dioxide concentrations e[CO 2 ] are often driven by changes the nutritional and defensive chemistry of their host plants. Studies addressing how prolific pest cotton bollworm ( Helicoverpa armigera ) responds to show that usually declines, associated with lower (e.g. nitrogen (N) concentrations) quality plants ]. We investigated impacts on anti-herbivore (jasmonate) signalling lucerne Medicago sativa when...
Abstract Silicon (Si) can adversely affect insect herbivores, particularly in plants that evolved the ability to accumulate large quantities of Si. Very rapid herbivore‐induced accumulation Si has recently been demonstrated, but level protection against herbivory this affords remains unknown. Brachypodium distachyon , a model hyperaccumulating grass, was exposed chewing herbivore, Helicoverpa armigera, and grown under three conditions: supplied over 34 d (+Si), not (−Si), or once began (−Si...
Abstract Aims Silicon (Si) uptake and accumulation improves plant resilience to environmental stresses, but most studies examining this functional role of Si have focussed on grasses (Poaceae) neglected other important groups, such as legumes (Fabaceae). Legumes evolved a symbiotic relationship with nitrogen-fixing bacteria (rhizobia) housed in root nodules. Our study determined the impacts silicon supplementation Medicago truncatula inoculated Ensifer meliloti rhizobial strains that...
Abstract Silicon (Si) accumulation alleviates a diverse array of environmental stresses in many plants, including conferring physical resistance against insect herbivores. It has been hypothesised that grasses, particular, utilise ‘low metabolic cost’ Si for structural and defensive roles under nutrient limitation. While carbon (C) concentrations often negatively correlate with concentrations, the relationship between nitrogen (N) status is more variable. Moreover, impacts N limitation on...
Predicting how plants allocate to different anti-herbivore defences in response elevated carbon dioxide (CO
Volatiles emitted by herbivore-attacked plants (senders) can enhance defenses in neighboring (receivers), however, the temporal dynamics of this phenomenon remain poorly studied. Using a custom-built, high-throughput proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS) system, we explored patterns volatile and responses between undamaged maize plants. We found that continuous exposure to natural blends herbivore-induced volatiles results clocked response plants,...
Old-growth forests often represent an important natural benchmark for evaluating the effects of management and changing environmental conditions on forest ecological dynamics. In regions with a history extensive land use, such as New England, there is limited opportunity to develop information, given that only few old-growth remain scattered across finite portion landscape. This study takes advantage unique historic data set collected 250 ha forest, within larger area (2,000 ha), in southern...
Volatiles emitted by herbivore-attacked plants (senders) can enhance defenses in neighboring (receivers), with important consequences for community dynamics. However, the temporal dynamics of this phenomenon remain poorly studied. Using a custom-built, high- throughput proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS) system, we explored patterns volatile and responses between undamaged maize plants. We found that continuous exposure to natural blends herbivore-induced...
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