The Arabidopsis Lectin Receptor Kinase LecRK-I.8 Is Involved in Insect Egg Perception

Gouhier‐Darimont, Caroline; Stahl, Elia; Glauser, Gaëtan; Reymond, Philippe

doi:10.3389/fpls.2019.00623

Cited by 51 publications

(48 citation statements)

References 59 publications

(115 reference statements)

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“…Oviposition or EE application trigger similar SA accumulation, ROS production, cell death, and defense gene expression in Arabidopsis ( Little et al, 2007 ; Bruessow et al, 2010 ; Gouhier-Darimont et al, 2013 ; Gouhier-Darimont et al, 2019 ; Figure 1—figure supplement 1 ). In addition, we recently showed that the receptor-like kinase LecRK-I.8 is an early component of egg-induced signaling responses ( Gouhier-Darimont et al, 2019 ). To test whether PCs can mimic these responses in a LecRK-I.8-dependent manner, Arabidopsis Col-0 and a T-DNA knock-out lecrk-I.8 mutant were exposed to oviposition by P. brassicae butterflies, or treated with EE and different synthetic PCs.…”

Section: Resultsmentioning

confidence: 96%

Phosphatidylcholines from Pieris brassicae eggs activate an immune response in Arabidopsis

Stahl

Brillatz

Queiroz

et al. 2020

eLife

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Recognition of conserved microbial molecules activates immune responses in plants, a process termed pattern-triggered immunity (PTI). Similarly, insect eggs trigger defenses that impede egg development or attract predators, but information on the nature of egg-associated elicitors is scarce. We performed an unbiased bioactivity-guided fractionation of eggs of the butterfly Pieris brassicae. Nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry of active fractions led to the identification of phosphatidylcholines (PCs). PCs are released from insect eggs, and they induce salicylic acid and H2O2 accumulation, defense gene expression and cell death in Arabidopsis, all of which constitute a hallmark of PTI. Active PCs contain primarily C16 to C18-fatty acyl chains with various levels of desaturation, suggesting a relatively broad ligand specificity of cell-surface receptor(s). The finding of PCs as egg-associated molecular patterns (EAMPs) illustrates the acute ability of plants to detect conserved immunogenic patterns from their enemies, even from seemingly passive structures such as eggs.

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Section: Resultsmentioning

confidence: 96%

Phosphatidylcholines from Pieris brassicae eggs activate an immune response in Arabidopsis

Stahl

Brillatz

Queiroz

et al. 2020

eLife

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“…Localized cell death was also observed in Arabidopsis thaliana after P. brassicae egg-laying (Little et al, 2007;Gouhier-Darimont et al, 2019); however, the response in this plant species is less strong and specific compared to Brassica spp., being A. thaliana not a foodplant for these butterflies (Harvey et al, 2007).…”

Section: Egg-induced Direct Plant Responsesmentioning

confidence: 93%

“…This protein seems to play a key role in early signal transduction steps by controlling several responses to P. brassicae egg-laying. The authors demonstrated that a lipidic fraction from P. brassicae eggs triggers localized cell death and that this response is significantly attenuated in lecrk-I.8 mutant plants, suggesting that LecRK-I.8 is involved in the sensing of an egg-derived lipidic compound (Gouhier-Darimont et al, 2019).…”

Section: Egg-derived Elicitorsmentioning

confidence: 99%

Chemical, Physiological and Molecular Responses of Host Plants to Lepidopteran Egg-Laying

et al. 2020

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Plant-lepidopteran interactions involve complex processes encompassing molecules and regulators to counteract defense responses they develop against each other. Lepidoptera identify plants for oviposition and exploit them as larval food sources to complete their development. In turn, plants adopt different strategies to overcome and limit herbivorous damages. The insect egg deposition on leaves can already induce a number of defense responses in several plant species. This minireview deals with the main features involved in the interaction between plants and lepidopteran egg-laying, focusing on responses from both insect and plant side. We discuss different aspects of direct and indirect plant responses triggered by lepidopteran oviposition. In particular, we focus our attention on the mechanisms underlying egg-induced plant defenses that can i) directly damage the eggs such as localized hypersensitive response (HR)-like necrosis, neoplasm formation, production of ovicidal compounds and ii) indirect defenses, such as production of oviposition-induced plant volatiles (OIPVs) used to attract natural enemies (parasitoids) able to kill the eggs or hatching larvae. We provide an overview of chemical, physiological, and molecular egg-mediated plant responses induced by both specialist and generalist lepidopteran species, also dealing with effectors, elicitors, and chemical signals involved in the process. Egg-associated microorganisms are also discussed, although little is known about this third partner participating in plant-lepidopteran interactions.

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“…However, not only the JA pathway is activated after spider mite infestation. The induction of both JA and SA pathways has been reported in spider mite infested thale cress [42,64,70], tomato [44,47], citrus [40,43,80] and pepper [46], among other plant species. Moreover, He et al [81] also reported the accumulation of SA and conjugated-SA forms induced by spider mite attack in bean (Phaseolus vulgaris) leaves but the JA content was not analyzed in this study.…”

Section: Inducible Defenses: Early Signalling Eventsmentioning

confidence: 99%

“…They act as active participants in the recognition of HAMPs derived from phytophagous insects to trigger defense pathways. Some PRRs have been identified in plants interacting with certain lepidopteran and aphid species [60][61][62][63][64]. In contrast, the information on PRRs associated with the recognition of other insect species is very limited.…”

Section: Inducible Defenses: Plant Perceptionmentioning

confidence: 99%

Plant Defenses Against Tetranychus urticae: Mind the Gaps

Santamaría

Arnáiz

Rosa‐Diaz

et al. 2020

Plants

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The molecular interactions between a pest and its host plant are the consequence of an evolutionary arms race based on the perception of the phytophagous arthropod by the plant and the different strategies adopted by the pest to overcome plant triggered defenses. The complexity and the different levels of these interactions make it difficult to get a wide knowledge of the whole process. Extensive research in model species is an accurate way to progressively move forward in this direction. The two-spotted spider mite, Tetranychus urticae Koch has become a model species for phytophagous mites due to the development of a great number of genetic tools and a high-quality genome sequence. This review is an update of the current state of the art in the molecular interactions between the generalist pest T. urticae and its host plants. The knowledge of the physical and chemical constitutive defenses of the plant and the mechanisms involved in the induction of plant defenses are summarized. The molecular events produced from plant perception to the synthesis of defense compounds are detailed, with a special focus on the key steps that are little or totally uncovered by previous research.

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The Arabidopsis Lectin Receptor Kinase LecRK-I.8 Is Involved in Insect Egg Perception

Cited by 51 publications

References 59 publications

Phosphatidylcholines from Pieris brassicae eggs activate an immune response in Arabidopsis

Phosphatidylcholines from Pieris brassicae eggs activate an immune response in Arabidopsis

Chemical, Physiological and Molecular Responses of Host Plants to Lepidopteran Egg-Laying

Plant Defenses Against Tetranychus urticae: Mind the Gaps

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