Insect egg deposition renders plant defence against hatching larvae more effective in a salicylic acid-dependent manner

2018 ◽  
Vol 42 (3) ◽  
pp. 1019-1032 ◽  
Author(s):  
Vivien Lortzing ◽  
Jana Oberländer ◽  
Tobias Lortzing ◽  
Takayuki Tohge ◽  
Anke Steppuhn ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Plant Defence ◽  
Dependent Manner ◽  
Insect Egg ◽  
Egg Deposition

scholarly journals Responses to larval herbivory in the phenylpropanoid pathway of Ulmus minor are boosted by prior insect egg deposition

Planta ◽  
2021 ◽  
Vol 255 (1) ◽  
Author(s):  
Johanna Schott ◽  
Benjamin Fuchs ◽  
Christoph Böttcher ◽  
Monika Hilker
Keyword(s):  
Salicylic Acid ◽  
Phenylpropanoid Pathway ◽  
Leaf Beetle ◽  
Egg Laying ◽  
Plant Responses ◽  
Larval Feeding ◽  
Insect Eggs ◽  
Insect Egg ◽  
Ulmus Minor ◽  
Egg Deposition

Abstract Main conclusion Elms, which have received insect eggs as a ‘warning’ of larval herbivory, enhance their anti-herbivore defences by accumulating salicylic acid and amplifying phenylpropanoid-related transcriptional and metabolic responses to hatching larvae. Abstract Plant responses to insect eggs can result in intensified defences against hatching larvae. In annual plants, this egg-mediated effect is known to be associated with changes in leaf phenylpropanoid levels. However, little is known about how trees—long-living, perennial plants—improve their egg-mediated, anti-herbivore defences. The role of phytohormones and the phenylpropanoid pathway in egg-primed anti-herbivore defences of a tree species has until now been left unexplored. Using targeted and untargeted metabolome analyses we studied how the phenylpropanoid pathway of Ulmus minor responds to egg-laying by the elm leaf beetle and subsequent larval feeding. We found that when compared to untreated leaves, kaempferol and quercetin concentrations increased in feeding-damaged leaves with prior egg deposition, but not in feeding-damaged leaves without eggs. PCR analyses revealed that prior insect egg deposition intensified feeding-induced expression of phenylalanine ammonia lyase (PAL), encoding the gateway enzyme of the phenylpropanoid pathway. Salicylic acid (SA) concentrations were higher in egg-treated, feeding-damaged leaves than in egg-free, feeding-damaged leaves, but SA levels did not increase in response to egg deposition alone—in contrast to observations made of Arabidopsis thaliana. Our results indicate that prior egg deposition induces a SA-mediated response in elms to feeding damage. Furthermore, egg deposition boosts phenylpropanoid biosynthesis in subsequently feeding-damaged leaves by enhanced PAL expression, which results in the accumulation of phenylpropanoid derivatives. As such, the elm tree shows similar, yet distinct, responses to insect eggs and larval feeding as the annual model plant A. thaliana.

Insectivorous Birds Are Attracted by Plant Traits Induced by Insect Egg Deposition

2018 ◽  
Vol 44 (12) ◽  
pp. 1127-1138 ◽  
Author(s):  
Elina Mäntylä ◽  
Sven Kleier ◽  
Carita Lindstedt ◽  
Silke Kipper ◽  
Monika Hilker
Keyword(s):  
Plant Traits ◽  
Insectivorous Birds ◽  
Insect Egg ◽  
Egg Deposition

The Plant's Response towards Insect Egg Deposition

2008 ◽  
pp. 205-233 ◽  
Author(s):  
Monika Hilker ◽  
Odette Rohfritsch ◽  
Torsten Meiners
Keyword(s):  
Insect Egg ◽  
Egg Deposition

scholarly journals Salicylic acid-mediated plasmodesmal closure via Remorin-dependent lipid organization

2019 ◽  
Vol 116 (42) ◽  
pp. 21274-21284 ◽  
Author(s):  
Dingquan Huang ◽  
Yanbiao Sun ◽  
Zhiming Ma ◽  
Meiyu Ke ◽  
Yong Cui ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Lipid Raft ◽  
Plant Pathogens ◽  
Regulatory Protein ◽  
Cell Communication ◽  
Direct Interaction ◽  
Membrane Lipid ◽  
Dependent Manner ◽  
Transmission Electron ◽  
Lipid Organization

Plasmodesmata (PD) are plant-specific membrane-lined channels that create cytoplasmic and membrane continuities between adjacent cells, thereby facilitating cell–cell communication and virus movement. Plant cells have evolved diverse mechanisms to regulate PD plasticity in response to numerous environmental stimuli. In particular, during defense against plant pathogens, the defense hormone, salicylic acid (SA), plays a crucial role in the regulation of PD permeability in a callose-dependent manner. Here, we uncover a mechanism by which plants restrict the spreading of virus and PD cargoes using SA signaling by increasing lipid order and closure of PD. We showed that exogenous SA application triggered the compartmentalization of lipid raft nanodomains through a modulation of the lipid raft-regulatory protein, Remorin (REM). Genetic studies, superresolution imaging, and transmission electron microscopy observation together demonstrated that Arabidopsis REM1.2 and REM1.3 are crucial for plasma membrane nanodomain assembly to control PD aperture and functionality. In addition, we also found that a 14-3-3 epsilon protein modulates REM clustering and membrane nanodomain compartmentalization through its direct interaction with REM proteins. This study unveils a molecular mechanism by which the key plant defense hormone, SA, triggers membrane lipid nanodomain reorganization, thereby regulating PD closure to impede virus spreading.

scholarly journals The Active Component of Aspirin, Salicylic Acid, Promotes Staphylococcus aureus Biofilm Formation in a PIA-dependent Manner

2017 ◽  
Vol 8 ◽  
Author(s):  
Cristian Dotto ◽  
Andrea Lombarte Serrat ◽  
Natalia Cattelan ◽  
María S. Barbagelata ◽  
Osvaldo M. Yantorno ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Salicylic Acid ◽  
Biofilm Formation ◽  
Active Component ◽  
Dependent Manner

scholarly journals Salicylic Acid Is Involved in the Nb-Mediated Defense Responses to Potato virus X in Solanum tuberosum

2010 ◽  
Vol 23 (4) ◽  
pp. 394-405 ◽  
Author(s):  
Gerardo Sánchez ◽  
Nadia Gerhardt ◽  
Florencia Siciliano ◽  
Adrián Vojnov ◽  
Isabelle Malcuit ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Solanum Tuberosum ◽  
Potato Virus ◽  
Potato Virus X ◽  
Defense Responses ◽  
Avirulent Strain ◽  
Dependent Manner ◽  
Hypersensitive Resistance ◽  
Potato Plants ◽  
Transgenic Lines

To evaluate the role of salicylic acid (SA) in Nb-mediated hypersensitive resistance to Potato virus X (PVX) avirulent strain ROTH1 in Solanum tuberosum, we have constructed SA-deficient transgenic potato plant lines by overexpressing the bacterial enzyme salicylate hydroxylase (NahG), which degrades SA. Evaluation of these transgenic lines revealed hydrogen peroxide accumulation and spontaneous lesion formation in an age- and light-dependent manner. In concordance, NahG potato plants were more sensitive to treatment with methyl viologen, a reactive oxygen species–generating compound. In addition, when challenged with PVX ROTH1, NahG transgenic lines showed a decreased disease-resistance response to infection and were unable to induce systemic acquired resistance. However, the avirulent viral effector, the PVX 25-kDa protein, does induce expression of the pathogenesis-related gene PR-1a in NahG potato plants. Taken together, our data indicate that SA is involved in local and systemic defense responses mediated by the Nb gene in Solanum tuberosum. This is the first report to show that basal levels of SA correlate with hypersensitive resistance to PVX.

Insect Egg Deposition Induces Indirect Defense and Epicuticular Wax Changes in Arabidopsis thaliana

2012 ◽  
Vol 38 (7) ◽  
pp. 882-892 ◽  
Author(s):  
Beatrice Blenn ◽  
Michele Bandoly ◽  
Astrid Küffner ◽  
Tobias Otte ◽  
Sven Geiselhardt ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Epicuticular Wax ◽  
Indirect Defense ◽  
Insect Egg ◽  
Egg Deposition

scholarly journals The Lesion-Mimic Mutant cpr22 Shows Alterations in Abscisic Acid Signaling and Abscisic Acid Insensitivity in a Salicylic Acid-Dependent Manner

2010 ◽  
Vol 152 (4) ◽  
pp. 1901-1913 ◽  
Author(s):  
Stephen Mosher ◽  
Wolfgang Moeder ◽  
Noriyuki Nishimura ◽  
Yusuke Jikumaru ◽  
Se-Hwan Joo ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Abscisic Acid ◽  
Dependent Manner ◽  
Abscisic Acid Signaling ◽  
Lesion Mimic ◽  
Lesion Mimic Mutant
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