4.5 Article

Influence of drought on plant performance through changes in belowground tritrophic interactions

Journal

ECOLOGY AND EVOLUTION
Volume 8, Issue 13, Pages 6756-6765

Publisher

WILEY
DOI: 10.1002/ece3.4183

Keywords

climate change; Diabrotica virgifera; drought; multitrophic interactions; natural enemies; plant defense

Funding

  1. Oeschger Centre for Climate Change Research (OCCR) of the University of Bern

Ask authors/readers for more resources

Climate change is predicted to increase the risk of drought in many temperate agroecosystems. While the impact of drought on aboveground plant-herbivore-natural enemy interactions has been studied, little is known about its effects on belowground tritrophic interactions and root defense chemistry. We investigated the effects of low soil moisture on the interaction between maize, the western corn rootworm (WCR, Diabrotica virgifera), and soil-borne natural enemies of WCR. In a manipulative field experiment, reduced soil moisture and WCR attack reduced plant performance and increased benzoxazinoid levels. The negative effects of WCR on cob dry weight and silk emergence were strongest at low moisture levels. Inoculation with entomopathogenic nematodes (EPNs, Heterorhabditis bacteriophora) was ineffective in controlling WCR, and the EPNs died rapidly in the warm and dry soil. However, ants of the species Solenopsis molesta invaded the experiment, were more abundant in WCR-infested pots and predated WCR independently of soil moisture. Ant presence increased root and shoot biomass and was associated with attenuated moisture-dependent effects of WCR on maize cob weight. Our study suggests that apart from directly reducing plant performance, drought can also increase the negative effects of root herbivores such as WCR. It furthermore identifies S.molesta as a natural enemy of WCR that can protect maize plants from the negative impact of herbivory under drought stress. Robust herbivore natural enemies may play an important role in buffering the impact of climate change on plant-herbivore interactions.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Ecology

Species-specific plant-mediated effects between herbivores converge at high damage intensity

Jinlong Wan, Jiahui Yi, Zhibin Tao, Zhikun Ren, Evans O. Otieno, Baoliang Tian, Jianqing Ding, Evan Siemann, Matthias Erb, Wei Huang

Summary: The identity and density of herbivores interact to determine plant responses and herbivore fitness. Low densities exhibit species-specific effects, while high densities converge. Considering herbivore identity and density is important for understanding plant-mediated interactions between herbivores.

ECOLOGY (2022)

Article Plant Sciences

Leafminer attack accelerates the development of soil-dwelling conspecific pupae via plant-mediated changes in belowground volatiles

Rocio Escobar-Bravo, Bernardus C. J. Schimmel, Gaetan Glauser, Peter G. L. Klinkhamer, Matthias Erb

Summary: Herbivore population dynamics are affected by plant-mediated interactions. Leaf herbivory by one herbivore species can affect the performance of conspecific pupae in the soil. This study shows that the aboveground herbivory triggers changes in root defense signaling and volatile production, which can alter the pupal development time.

NEW PHYTOLOGIST (2022)

Article Multidisciplinary Sciences

Soil chemistry determines whether defensive plant secondary metabolites promote or suppress herbivore growth

Lingfei Hu, Zhenwei Wu, Christelle A. M. Robert, Xiao Ouyang, Tobias Zust, Adrien Mestrot, Jianming Xu, Matthias Erb

Summary: Plant secondary metabolites play a dual role in plant defense and root interactions with herbivores, with soil iron levels influencing the impact of these metabolites on herbivore growth. This study highlights the complex interplay between soil chemistry and plant defense mechanisms, demonstrating the multifunctionality of plant secondary metabolites in shaping interactions in variable environments.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)

Review Plant Sciences

Plant defense strategies against attack by multiple herbivores

Maite Fernandez de Bobadilla, Alessia Vitiello, Matthias Erb, Erik H. Poelman

Summary: Plants have the ability to recognize their attackers and adjust their physiology to defend against multiple herbivores. However, little is known about how plants defend against multiple attackers, which is a major gap in plant science research.

TRENDS IN PLANT SCIENCE (2022)

Article Ecology

Climate warming can reduce biocontrol efficacy and promote plant invasion due to both genetic and transient metabolomic changes

Yan Sun, Tobias Zuest, Daniele Silvestro, Matthias Erb, Oliver Bossdorf, Pierre Mateo, Christelle Robert, Heinz Mueller-Schaerer

Summary: Climate change can influence plant-herbivore interactions and their associated ecosystem functions. An experimental study on invasive Ambrosia artemisiifolia showed that warming and herbivory by biocontrol beetles can lead to changes in the genetic composition and metabolomic profiles of plants, resulting in increased offspring biomass and resistance to herbivory. However, climate warming could reduce biocontrol efficiency and promote Ambrosia invasion, with potential economic and health consequences.

ECOLOGY LETTERS (2022)

Article Plant Sciences

Belowground and aboveground herbivory differentially affect the transcriptome in roots and shoots of maize

Wenfeng Ye, Carlos Bustos-Segura, Thomas Degen, Matthias Erb, Ted C. J. Turlings

Summary: Extensive transcriptomic analyses have revealed distinct differences in the gene expression profiles of maize plants upon shoot and root attack, both locally and distantly from the affected tissue. This study provides detailed insights into the specificity of plant defense responses and offers a molecular resource for further genetic studies on maize resistance to herbivores. It also paves the way for novel strategies to enhance maize resistance to pests.

PLANT DIRECT (2022)

Review Biochemistry & Molecular Biology

Volatile uptake, transport, perception, and signaling shape a plant?s nose

Lei Wang, Matthias Erb

Summary: Herbivore-induced plant volatiles play a crucial role in regulating defenses in undamaged neighboring plants. Understanding the mechanisms of plant volatile uptake, perception, and translation into defense signaling pathways is essential. Various molecular processes, such as membrane-associated and intracellular receptors, as well as mitogen-activated protein kinases (MAPKs), WRKY transcription factors, and jasmonates, are involved in translating volatiles into defense priming and induction. The diverse molecular processes in volatile signaling result in spatiotemporal and ontogenetic variation in plant responsiveness to volatiles, which has significant implications for plant-environment interactions.

ESSAYS IN BIOCHEMISTRY (2022)

Review Physiology

Metabolization and sequestration of plant specialized metabolites in insect herbivores: Current and emerging approaches

Adriana Moriguchi Jeckel, Franziska Beran, Tobias Zuest, Gordon Younkin, Georg Petschenka, Prayan Pokharel, Domenic Dreisbach, Stephanie Christine Ganal-Vonarburg, Christelle Aurelie Maud Robert

Summary: This review summarizes methods for studying how herbivorous insects cope with plant specialized metabolites (PSMs), and how to validate the genetic and biochemical mechanisms involved in PSM resistance. This research is crucial for understanding the biology, population dynamics, and evolution of herbivorous insects.

FRONTIERS IN PHYSIOLOGY (2022)

Article Chemistry, Multidisciplinary

The Chemical Ecology of Benzoxazinoids

Christelle Aurelie Maud Robert, Pierre Mateo

Summary: Benzoxazinoids are specialized metabolites that play multiple roles in plant physiology and interactions with the environment, regulating plant nutrition, growth, and defense. Plants can modulate benzoxazinoid production in response to environmental factors, and these compounds act as strong selective forces on different trophic levels by shaping plant interactions with other organisms, impacting (agro)ecosystem functioning and diversity.

CHIMIA (2022)

Article Agriculture, Multidisciplinary

Turnover of Benzoxazinoids during the Aerobic Deterioration of Maize Silage (Zea mays)

Josef J. Gross, Pierre Mateo, Dietmar Ramhold, Ewald Kramer, Matthias Erb, Christelle A. M. Robert

Summary: This study investigates the metabolization of benzoxazinoids (BXs) in silages of two maize genotypes during aerobic deterioration. It finds that the concentration of BXs in silage decreases over time in the wild type maize, while the concentration increases in mutant maize. Aerobic stability is influenced by BXs, and the nutrient composition is not affected. Further research is needed under different conditions.

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY (2023)

Review Plant Sciences

Water availability and plant-herbivore interactions

Po-An Lin, Jessica Kansman, Wen-Po Chuang, Christelle Robert, Matthias Erb, Gary W. Felton

Summary: Water availability has a significant impact on plant-herbivore interactions. This review summarizes recent research on the effects of water availability on plant antiherbivore defense and the physiological processes involved. Water deficit tends to enhance certain defense traits but negatively affects others, and the impact of water availability on species interactions and plant evolution is discussed. However, there is a lack of study on the interactive impact of additional abiotic stressors on water-plant-herbivore interactions.

JOURNAL OF EXPERIMENTAL BOTANY (2023)

Review Biochemistry & Molecular Biology

Dynamic environmental interactions shaped by vegetative plant volatiles

Rocio Escobar-Bravo, Po-An Lin, Jamie M. Waterman, Matthias Erb

Summary: Plants shape terrestrial ecosystems through physical and chemical interactions, particularly through their volatile organic compounds, which influence the behavior and performance of other organisms. This review discusses the production, release, and regulation of vegetative plant volatiles, as well as their effects on various organisms. Concepts such as multifunctionality of specialized metabolites, chemical communication displays, and volatile physiochemistry can help explain and predict the evolution and expression patterns of vegetative plant volatiles. The multifaceted roles of vegetative plant volatiles provide opportunities to understand ecosystem dynamics and utilize them for sustainable agriculture.

NATURAL PRODUCT REPORTS (2023)

No Data Available