Manipulating stomatal aperture by silencing StSLAC1 affects potato plant–herbivore–parasitoid tritrophic interactions under drought stress

New Phytologist, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Summary The effects of drought stress on stomatal opening dynamics, plant volatile organic compound (VOC) emissions and plant–insect interactions have been well‐documented individually, but how they interact mechanistically remains poorly studied. Here, we studied drought‐triggered closure affects VOC emission plant–trophic by combining RNAi silencing, molecular biological chemical analyses (GC‐MS) a potato‐tuber moth‐egg parasitoid tritrophic system. Drought attenuated apertures emissions, which made the potato ( Solanum tuberosum L.) plants more attractive to herbivore less parasitoid. Stomatal aperture manipulations through StSLAC1 gene knockdown treatments (ABA 5‐aminolevulinic acid) consistently affected plant–herbivore–parasitoid interactions, supporting aperture‐dependent emission. RNA‐Seq analysis revealed that did not transcriptionally inhibit biosynthesis. Collectively, our findings are consistent with regulation modulation under stress. This highlights intricate interplay between interactions.

Language: Английский

---

Tritrophic Interactions among Arthropod Natural Enemies, Herbivores and Plants Considering Volatile Blends at Different Scale Levels

Cells, Journal Year: 2023, Volume and Issue: 12(2), P. 251 - 251

Published: Jan. 7, 2023

Herbivore-induced plant volatiles (HIPVs) are released by plants upon damaged or disturbance phytophagous insects. Plants emit HIPV signals not merely in reaction to tissue damage, but also response herbivore salivary secretions, oviposition, and excrement. Although certain volatile chemicals retained tissues rapidly damaged, others synthesized de novo feeding emitted only from nearby undamaged leaves. HIPVs can be used predators parasitoids locate herbivores at different spatial scales. The HIPV-emitting pattern is dynamic heterogeneous nature influenced the concentration, chemical makeup, breakdown of mixes environmental elements (e.g., turbulence, wind vegetation) which affect foraging biocontrol agents. In addition, sensory capability detect physical ability move towards source were between natural enemy individuals. impacts on arthropod enemies have been partially studied scales, that why functions still subject under much debate. this review, we summarized current knowledge loopholes regarding role tritrophic interactions multiple scale levels. Therefore, contend closing these will make it easier use for sustainable pest management agriculture.

Language: Английский

---

Influence of Chabazite Zeolite Foliar Applications Used for Olive Fruit Fly Control on Volatile Organic Compound Emission, Photosynthesis, and Quality of Extra Virgin Olive Oil

Plants, Journal Year: 2024, Volume and Issue: 13(5), P. 698 - 698

Published: Feb. 29, 2024

The olive fruit fly (Bactrocera oleae Rossi) is the most dangerous pest of fruits and negatively influences chemical sensory quality oil produced. Organic farms have few tools against this are constantly looking for effective sustainable products such as geomaterials, i.e., zeolite. Since a particle film covers canopy, study was carried out on tree’s responses to zeolite foliar coating. tested treatments were natural (NZ), enriched with ammonium (EZ), Spintor-Fly® (SF). EZ associated higher photosynthetic activity respect other treatments, while no differences found between SF NZ. Foliar affect amount BVOC produced in both leaves olives, where 26 23 different BVOCs (biogenic volatile organic compounds) identified but not type compounds emitted. treatment significantly affected size, more frequently attacked NZ had olives similar size attack those treated Spintor-Fly®; difference quantity detected. Oil from presented values phenolic content intensities bitterness spiciness than oils SF. According results study, using films an tree canopy does influence plant physiology; it has impact emission characteristics oil.

Language: Английский

---

Water availability and plant–herbivore interactions

Journal of Experimental Botany, Journal Year: 2022, Volume and Issue: 74(9), P. 2811 - 2828

Published: Dec. 4, 2022

Water is essential to plant growth and drives evolution interactions with other organisms such as herbivores. However, water availability fluctuates, these fluctuations are intensified by climate change. How influences plant-herbivore in the future an important question basic applied ecology. Here we summarize synthesize recent discoveries on impact of antiherbivore defense ecology underlying physiological processes. deficit tends enhance resistance escape traits (i.e. early phenology) against herbivory but negatively affects strategies, including indirect tolerance. exceptions sometimes observed specific species pairs. We discuss effect associated plants herbivores from individual community levels how drive evolution. Although stress many abiotic stresses predicted increase intensity frequency due change, identify a significant lack study interactive additional stressors water-plant-herbivore interactions. This review summarizes critical knowledge gaps informs possible research directions

Language: Английский

---

Impact of endophytic colonization by entomopathogenic fungi on the behavior and life history of the tobacco peach aphid Myzus persicae var. nicotianae

PLoS ONE, Journal Year: 2022, Volume and Issue: 17(9), P. e0273791 - e0273791

Published: Sept. 6, 2022

Entomopathogenic fungi can adopt an endophytic lifestyle and provide protection against insect herbivores plant pathogens. So far, most studies have focused on Beauveria bassiana to increase resistance abiotic biotic stresses, while only little is known for other entomopathogenic fungi. In this study, we investigated whether root inoculation of sweet pepper ( Capsicum annuum L.) by the Akanthomyces muscarius ARSEF 5128 B . 3097 improve tobacco peach aphid Myzus persicae var. nicotianae First, dual-choice experiments were performed test hypothesis that deter aphids via modifying volatile profiles. Next, tested colonization negatively affects life history traits, such as fecundity, development mortality rate. Aphids significantly attracted odor plants inoculated with A over non-inoculated plants. Plants emitted higher amounts β-pinene than plants, indole bassiana- Inoculation fungal strains also caused emission terpinolene. Further, both longevity fecundity reduced 18% 10%, respectively, when feeding , although intrinsic rate population did not differ between Sweet elicit a significant behavioral response nor affected traits. We conclude has potential alter olfactory behavior performance M but effects are small depend strain used.

Language: Английский

---

Dynamical study on volatiles signaling in plant disease and pest-natural enemy interaction

Modeling Earth Systems and Environment, Journal Year: 2025, Volume and Issue: 11(1)

Published: Jan. 4, 2025

Language: Английский

---

Effect of Altitude on Volatile Organic and Phenolic Compounds of Artemisia brevifolia Wall ex Dc. From the Western Himalayas

Frontiers in Ecology and Evolution, Journal Year: 2022, Volume and Issue: 10

Published: May 12, 2022

Adaptation to changing environmental conditions is a driver of plant diversification. Elevational gradients offer unique opportunity for investigating adaptation range climatic conditions. The use specialized metabolites as volatile and phenolic compounds major in plants, affecting their reproductive success survival by attracting pollinators protecting themselves from herbivores other stressors. wormseed Artemisia brevifolia can be found across multiple elevations the Western Himalayas, region that considered biodiversity hotspot highly impacted climate change. This study aims at understanding produced A. high elevation cold deserts Himalayas with view strategies employed plants under harsh Across four sampling sites different elevations, polydimethylsiloxane (PDMS) subsequent GCMS analyses showed total number headspace increased this trend was largely driven an increase low volatility, which might improve plant’s resilience abiotic stress. HPLC no effect on detected both young mature leaves. However, concentration majority decreased elevation. As production defense costly trait, higher face trade-off between energy expenditure herbivores. therefore help us understand how adjust secondary metabolite cope environments reveal adaptability such species threatened regions our planet Himalayas.

Language: Английский

---

Behavioral and electrophysiological responses of cabbage aphids to odors from host plants infested by conspecific and heterospecific herbivores

Arthropod-Plant Interactions, Journal Year: 2024, Volume and Issue: 18(2), P. 353 - 365

Published: Jan. 25, 2024

Language: Английский

---

Unraveling the multifaceted effects of climatic factors on mountain pine beetle and its interaction with fungal symbionts

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(3)

Published: Feb. 27, 2024

Abstract Mountain pine beetles (MPBs) pose a substantial threat to North American forests, causing extensive tree mortality over large areas. Their tree‐killing ability is closely linked mass aggregation on host trees triggered via pheromones and dependence their symbiotic fungi. However, the influence of changing climate biology MPBs co‐evolved interactions with fungal symbionts remains uncertain. To investigate this, male female pairs were introduced into freshly cut logs from lodgepole placed in controlled chambers manipulated environmental conditions, including two levels CO 2 (ambient vs. 1000 ppm), O 3 100 ppb) humidity (33% 65%). The beetle‐infested left these for 1 month then returned ambient conditions until brood emergence. Emerging broods collected further analysis. Additionally, three species ( Grosmannia clavigera , Ophiostoma montium Leptographium longiclavatum ) subjected same 5 days. Lower promoted MPB reproduction growth. Elevated accelerated larval growth emergence while improving pheromone production. had negative impact fitness its immune responses an entomopathogenic fungus Beauveria bassiana ). It also inhibited reproduction, whereas elevated varied (positive or negative) effects ergosterol (proxy mass) production depending species. Together, findings suggest that change can potentially alter between symbionts, highlighting importance understanding how affects forest pests relationships develop effective management strategies future.

Language: Английский

---

Low water availability enhances volatile‐mediated direct defences but disturbs indirect defences against herbivores

Journal of Ecology, Journal Year: 2022, Volume and Issue: 110(11), P. 2759 - 2771

Published: Aug. 27, 2022

Abstract Interactions between plants and natural enemies of insect herbivores influence plant productivity survival by reducing herbivory. Plants attract via herbivore‐induced volatiles (HIPVs), but how water availability (WA) influences HIPV‐mediated defences is unclear. We use tomato, Solanum lycopersicum , tomato fruitworm, Helicoverpa zea two enemies, the parasitoid wasp, Microplitis croceipes predator spined soldier bug, Podisus maculiventris to investigate effect WA on HIPV emission dynamics associated defence. show that low initially increases total first day herbivore exposure and, in contrast, reduces second day. Low enhances HIPVs are mostly found trichomes. Notably, some inhibited known attractants enemies. Evidence from Y‐tube in‐cage behavioural assays indicates changes emissions compromise ability Synthesis . Based our results, we propose a hypothesis where respond enhancing repellent which disrupts enemy‐mediated indirect defences, direct defence against herbivores.

Language: Английский

---