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Fernández de Bobadilla M, Vitiello A, Erb M, Poelman EH. Plant defense strategies against attack by multiple herbivores. TRENDS IN PLANT SCIENCE 2022; 27:528-535. [PMID: 35027280 DOI: 10.1016/j.tplants.2021.12.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 05/21/2023]
Abstract
Plants may effectively tailor defenses by recognizing their attackers and reprogramming their physiology. Although most plants are under attack by a large diversity of herbivores, surprisingly little is known about the physiological capabilities of plants to deal with attack by multiple herbivores. Studies on dual herbivore attack identified that defense against one attacker may cause energetic and physiological constraints to deal with a second attacker. How these constraints shape plant plasticity in defense to their full community of attackers is a major knowledge gap in plant science. Here, we provide a framework for plant defense to multiherbivore attack by defining the repertoire of plastic defense strategies that may allow plants to optimize their defenses against a multitude of stressors.
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Affiliation(s)
| | - Alessia Vitiello
- Laboratory of Entomology, Wageningen University, Wageningen, The Netherlands
| | - Matthias Erb
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Erik H Poelman
- Laboratory of Entomology, Wageningen University, Wageningen, The Netherlands.
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Shi JH, Liu H, Pham TC, Hu XJ, Liu L, Wang C, Foba CN, Wang SB, Wang MQ. Volatiles and hormones mediated root-knot nematode induced wheat defense response to foliar herbivore aphid. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 815:152840. [PMID: 34995605 DOI: 10.1016/j.scitotenv.2021.152840] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 11/26/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
Plant root-leaf communication signals are critical for plant defense. Numerous studies show that belowground organisms can alter systemically resistance traits in aboveground parts against herbivores. However, there are limited studies on root-knot nematode-aphid interaction. Moreover, the impact of nematode's initial density and infection time on plant defense is poorly understood. Here we aim to examine the induced defense responses by root-knot nematode Meloidogyne incognita against aboveground feeding aphid Sitobion avenae in wheat. Further, we investigated the influence of the nematode infection density as well as the length of infection in these interactions. We tested the direct and indirect defense responses triggered by M. incognita against S. avenae as well as how the responses affect the preference of Harmonia axyridis. Plant volatiles and hormones were determined to explore plant defense mechanisms that mediate aboveground-belowground defense. The photosynthetic rate was tested to examine plant tolerance strategy. We found that, both low and high densities M. incognita root infection at 7 days post inoculation (dpi) reduced the feeding of the aphid S. avenae. Behavioral assay showed that H. axyridis preferred plants co-damaged by both M. incognita and S. avenae at 7 dpi. M. incognita infection induced the changes of jasmonic acid, salicylic acid and volatile content, which mediated plant response to S. avenae. Furthermore, photosynthetic rate in wheat increased at 5 dpi under 300 M. incognita or 1000 M. incognita infection. These results suggest that plant roots induced multiple defense strategies against foliar herbivores as damages increased. Our study provides evidence of a complex dynamic response of wheat aboveground defense against aphids in response to belowground nematode damage on a temporal scale.
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Affiliation(s)
- Jin-Hua Shi
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Hao Liu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - The Cuong Pham
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xin-Jun Hu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Le Liu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chao Wang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Caroline Ngichop Foba
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Shu-Bo Wang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Man-Qun Wang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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Perkovich C, Ward D. Differentiated plant defense strategies: Herbivore community dynamics affect plant–herbivore interactions. Ecosphere 2022. [DOI: 10.1002/ecs2.3935] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Cindy Perkovich
- Department of Biological Sciences Kent State University Kent Ohio USA
| | - David Ward
- Department of Biological Sciences Kent State University Kent Ohio USA
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The plant metabolome guides fitness-relevant foraging decisions of a specialist herbivore. PLoS Biol 2021; 19:e3001114. [PMID: 33600420 PMCID: PMC7924754 DOI: 10.1371/journal.pbio.3001114] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 03/02/2021] [Accepted: 01/26/2021] [Indexed: 01/01/2023] Open
Abstract
Plants produce complex mixtures of primary and secondary metabolites. Herbivores use these metabolites as behavioral cues to increase their fitness. However, how herbivores combine and integrate different metabolite classes into fitness-relevant foraging decisions in planta is poorly understood. We developed a molecular manipulative approach to modulate the availability of sugars and benzoxazinoid secondary metabolites as foraging cues for a specialist maize herbivore, the western corn rootworm. By disrupting sugar perception in the western corn rootworm and benzoxazinoid production in maize, we show that sugars and benzoxazinoids act as distinct and dynamically combined mediators of short-distance host finding and acceptance. While sugars improve the capacity of rootworm larvae to find a host plant and to distinguish postembryonic from less nutritious embryonic roots, benzoxazinoids are specifically required for the latter. Host acceptance in the form of root damage is increased by benzoxazinoids and sugars in an additive manner. This pattern is driven by increasing damage to postembryonic roots in the presence of benzoxazinoids and sugars. Benzoxazinoid- and sugar-mediated foraging directly improves western corn rootworm growth and survival. Interestingly, western corn rootworm larvae retain a substantial fraction of their capacity to feed and survive on maize plants even when both classes of chemical cues are almost completely absent. This study unravels fine-grained differentiation and combination of primary and secondary metabolites into herbivore foraging and documents how the capacity to compensate for the lack of important chemical cues enables a specialist herbivore to survive within unpredictable metabolic landscapes.
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Bont Z, Pfander M, Robert CAM, Huber M, Poelman EH, Raaijmakers CE, Erb M. Adapted dandelions trade dispersal for germination upon root herbivore attack. Proc Biol Sci 2020; 287:20192930. [PMID: 32097589 DOI: 10.1098/rspb.2019.2930] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
A plant's offspring may escape unfavourable local conditions through seed dispersal. Whether plants use this strategy to escape insect herbivores is not well understood. Here, we explore how different dandelion (Taraxacum officinale agg.) populations, including diploid outcrossers and triploid apomicts, modify seed dispersal in response to root herbivore attack by their main root-feeding natural enemy, the larvae of the common cockchafer Melolontha melolontha. In a manipulative field experiment, root herbivore attack increased seed dispersal potential through a reduction in seed weight in populations that evolved under high root herbivore pressure, but not in populations that evolved under low pressure. This increase in dispersal potential was independent of plant cytotype, but associated with a reduction in germination rate, suggesting that adapted dandelions trade dispersal for establishment upon attack by root herbivores. Analysis of vegetative growth parameters suggested that the increased dispersal capacity was not the result of stress flowering. In summary, these results suggest that root herbivory selects for an induced increase in dispersal ability in response to herbivore attack. Induced seed dispersal may be a strategy that allows adapted plants to escape from herbivores.
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Affiliation(s)
- Zoe Bont
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Marc Pfander
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | | | - Meret Huber
- Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
| | - Erik H Poelman
- Laboratory of Entomology, Wageningen University, Wageningen, The Netherlands
| | - Ciska E Raaijmakers
- Department of Terrestrial Ecology, Netherlands Institute of Ecology, Wageningen, The Netherlands
| | - Matthias Erb
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
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Huberty M, Martis B, van Kampen J, Choi YH, Vrieling K, Klinkhamer PGL, Bezemer TM. Soil Inoculation Alters Leaf Metabolic Profiles in Genetically Identical Plants. J Chem Ecol 2020; 46:745-755. [PMID: 32020484 PMCID: PMC7429552 DOI: 10.1007/s10886-020-01156-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/20/2020] [Accepted: 01/27/2020] [Indexed: 12/17/2022]
Abstract
Abiotic and biotic properties of soil can influence growth and chemical composition of plants. Although it is well-known that soil microbial composition can vary greatly spatially, how this variation affects plant chemical composition is poorly understood. We grew genetically identical Jacobaea vulgaris in sterilized soil inoculated with live soil collected from four natural grasslands and in 100% sterilized soil. Within each grassland we sampled eight plots, totalling 32 different inocula. Two samples per plot were collected, leading to three levels of spatial variation: within plot, between and within grasslands. The leaf metabolome was analysed with 1H Nuclear magnetic resonance spectroscopy (NMR) to investigate if inoculation altered the metabolome of plants and how this varied between and within grasslands. Inoculation led to changes in metabolomics profiles of J. vulgaris in two out of four sites. Plants grown in sterilized and inoculated soils differed in concentrations of malic acid, tyrosine, trehalose and two pyrrolizidine alkaloids (PA). Metabolomes of plants grown in inoculated soils from different sites varied in glucose, malic acid, trehalose, tyrosine and in one PA. The metabolome of plants grown in soils with inocula from the same site was more similar than with inocula from distant sites. We show that soil influences leaf metabolomes. Performance of aboveground insects often depends on chemical composition of plants. Hence our results imply that soil microbial communities, via affecting aboveground plant metabolomes, can impact aboveground plant-insect food chains but that it is difficult to make general predictions due to spatial variation in soil microbiomes.
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Affiliation(s)
- Martine Huberty
- Department of Terrestrial Ecology, Netherlands Institute of Ecology, Wageningen, The Netherlands. .,Plant Ecology and Phytochemistry, Institute of Biology, Leiden University, Leiden, The Netherlands. .,Natural Products Laboratory, Institute of Biology, Leiden University, Leiden, The Netherlands.
| | - Beverly Martis
- Plant Ecology and Phytochemistry, Institute of Biology, Leiden University, Leiden, The Netherlands
| | - Jorian van Kampen
- Plant Ecology and Phytochemistry, Institute of Biology, Leiden University, Leiden, The Netherlands
| | - Young Hae Choi
- Natural Products Laboratory, Institute of Biology, Leiden University, Leiden, The Netherlands.,College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Klaas Vrieling
- Plant Ecology and Phytochemistry, Institute of Biology, Leiden University, Leiden, The Netherlands
| | - Peter G L Klinkhamer
- Plant Ecology and Phytochemistry, Institute of Biology, Leiden University, Leiden, The Netherlands
| | - T Martijn Bezemer
- Department of Terrestrial Ecology, Netherlands Institute of Ecology, Wageningen, The Netherlands.,Plant Ecology and Phytochemistry, Institute of Biology, Leiden University, Leiden, The Netherlands
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