Leaf size determines damage- and herbivore-induced volatile emissions in maize

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

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 behavior interact shape emissions not well understood. Using a high-throughput profiling system with high temporal resolution, we examined mechanical on different leaves shapes plant-level emission patterns maize. We then tested resulting consequences two generalist herbivores ( Spodoptera exigua littoralis ), assessed whether preferences are associated enhanced performance. found maize seedlings emit more when larger damaged. Larger emitted locally, which was determining factor for higher Surprisingly, both S. preferentially consumed leaves, thus maximize without apparent growth benefits. Together, these findings provide ecophysiological behavioral mechanism patterns, potentially implications volatile-mediated plant-environment interactions.

Language: Английский

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Blumeria hordei affects volatile emission of susceptible and resistant barley plants and modifies the defense response of recipient plants

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(6)

Published: Nov. 1, 2024

Abstract The barley powdery mildew disease caused by the biotrophic fungus Blumeria hordei ( Bh ) poses enormous risks to crop production due yield and quality losses. Plants fungi can produce release volatile organic compounds (VOCs) that serve as signals in plant communication defense response protect themselves. present study aims identify VOCs released Hordeum vulgare during ‐infection decipher VOC‐induced resistance receiver plants. VOC profiles of susceptible MLO wild type WT) a resistant near‐isogenic backcross line mlo5 were characterized over time (one day or three days after inoculation) using TD‐GC/MS. Comparative analysis revealed genotype‐dependent significant differences emission rates for β ‐caryophyllene, linalool, Z )‐3‐hexenol, methyl salicylate. Furthermore, plants exposed complex bouquet WT sender plant‐to‐plant communication. We found depended on genotype susceptibility assay. Additionally, untargeted metabolomics gene expression studies provide evidence toward an SA‐dependent pathway mediating against mildew. exogenous application salicylate resulted enhanced BARLEY CHEMICALLY INDUCED‐4 marker induced findings suggest alterations plant‐fungus interactions show VOC‐mediated shares components with salicylic acid‐related pathways. identified here could non‐invasive markers progression barley‐powdery induction recipient

Language: Английский

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High-resolution kinetics of herbivore-induced plant volatile transfer reveal clocked response patterns in neighboring plants

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: May 23, 2023

Abstract 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 volatiles results clocked response plants, characterized an induced terpene burst at onset second day exposure. This delayed is not explained accumulation during night, but coincides jasmonate receiver The occurs independent : night light transitions cannot be fully sender Instead, it result stress memory from first secondary bioactive on day. Our study reveals prolonged stress-induced integrates priming direct induction into distinct predictable pattern. provides answer long-standing question whether predominantly induce or prime plant revealing they do both sequence.

Language: Английский

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Volatiles from low R:FR-treated maize plants increase the emission of herbivore-induced plant volatiles in their neighbors

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 6, 2024

ABSTRACT Low Red (R) to Far (FR) light ratios, a signal associated with vegetation shade, can prompt intact maize ( Zea mays ) plants constitutively emit more volatiles when exposed herbivory-induced plant (HIPVs). Here we investigated how simulated shading affects priming responses in the context of volatile-mediated plant-plant interactions. Receiver were either constitutive volatile organic compounds (cVOCs) or HIPVs from emitter plants, while manipulated R:FR conditions receivers emitters. Priming then assessed by measuring real-time emissions following herbivory. We show that low enhances previously neighbours independently also demonstrate both cVOCs and emitted grown under amplify their neighbours. This amplified response could not be explained FR-mediated changes release green leaf terpenoids emitters, thus suggesting involvement other VOCs. conclude interactions expected become intense denser canopies due light-mediated amplification emission responsiveness.

Language: Английский

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Editorial: Secondary metabolites and the plant adaptability to an ever-changing environment

Environmental and Experimental Botany, Journal Year: 2023, Volume and Issue: 215, P. 105402 - 105402

Published: June 7, 2023

Language: Английский

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