Full Text Journal Articles by
Author Michael Reichelt

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The physiological and biochemical effects on Napier grass plants following Napier grass stunt phytoplasma infection.

George Ochieng Asudi, Keziah Moraa Omenge, Maria K Paulmann, Michael Reichelt, Veit Grabe, Axel Mithofer, Ralf Oelmueller, Alexandra C U Furch,

Napier grass stunt (NGS) phytoplasma, a phloem limited bacterium, infects Napier grass leading to severe yield losses in East Africa. The infected plants are strongly inhibited in growth and biomass production. In this study, phytoplasma-induced morphological changes of the vascular system and physiological changes were analysed and compared with uninfected ... Read more >>

Phytopathology (Phytopathology)
[2020, :]

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Glucosylation prevents plant defense activation in phloem-feeding insects.

Osnat Malka, Michael L A E Easson, Christian Paetz, Monika Götz, Michael Reichelt, Beate Stein, Katrin Luck, Aleksa Stanišić, Ksenia Juravel, Diego Santos-Garcia, Lilach L Mondaca, Simon Springate, John Colvin, Stephan Winter, Jonathan Gershenzon, Shai Morin, Daniel G Vassão,

The metabolic adaptations by which phloem-feeding insects counteract plant defense compounds are poorly known. Two-component plant defenses, such as glucosinolates, consist of a glucosylated protoxin that is activated by a glycoside hydrolase upon plant damage. Phloem-feeding herbivores are not generally believed to be negatively impacted by two-component defenses due to ... Read more >>

Nat Chem Biol (Nature chemical biology)
[2020, :]

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Detoxification of plant defensive glucosinolates by an herbivorous caterpillar is beneficial to its endoparasitic wasp.

Ruo Sun, Rieta Gols, Jeffrey A Harvey, Michael Reichelt, Jonathan Gershenzon, Sagar S Pandit, Daniel G Vassão,

Plant chemical defences impact not only herbivores, but also organisms in higher trophic levels that prey on or parasitize herbivores. While herbivorous insects can often detoxify plant chemicals ingested from suitable host plants, how such detoxification affects endoparasitoids that use these herbivores as hosts is largely unknown. Here, we used ... Read more >>

Mol Ecol (Molecular ecology)
[2020, 29(20):4014-4031]

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Sclerotinia sclerotiorum infection triggers changes in primary and secondary metabolism in Arabidopsis thaliana.

Jingyuan Chen, Chhana Ullah, Daniel Giddings Vassão, Michael Reichelt, Jonathan Gershenzon, Almuth Hammerbacher,

Sclerotinia sclerotiorum is a devastating plant pathogen that causes substantial losses in various agricultural crops. Although plants have developed some well-known defense mechanisms against invasive fungi, much remains to be learned about plant responses to fungal pathogens. In this study we investigated how plant primary and secondary metabolism in the ... Read more >>

Phytopathology (Phytopathology)
[2020, :]

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Analysis of the isoprenoid pathway intermediates, dimethylallyl diphosphate and isopentenyl diphosphate, from crude plant extracts by liquid chromatography tandem mass spectrometry.

Toni Krause, Michael Reichelt, Jonathan Gershenzon, Axel Schmidt,

OBJECTIVE:We sought to develop a sensitive and accurate analytical method for the detection and quantification of IDP and DMADP as well as their monophosphate derivatives in crude plant extracts. METHODS:A liquid chromatography method coupled to tandem mass spectrometry (LC-MS/MS) with multiple reaction monitoring (MRM) was established to measure the amounts ... Read more >>

Phytochem Anal (Phytochemical analysis : PCA)
[2020, :]

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Herbivory meets fungivory: insect herbivores feed on plant pathogenic fungi for their own benefit.

Franziska Eberl, Maite Fernandez de Bobadilla, Michael Reichelt, Almuth Hammerbacher, Jonathan Gershenzon, Sybille B Unsicker,

Plants are regularly colonised by fungi and bacteria, but plant-inhabiting microbes are rarely considered in studies on plant-herbivore interactions. Here we show that young gypsy moth (Lymantria dispar) caterpillars prefer to feed on black poplar (Populus nigra) foliage infected by the rust fungus Melampsora larici-populina instead of uninfected control foliage, ... Read more >>

Ecol. Lett. (Ecology letters)
[2020, 23(7):1073-1084]

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A light-dependent molecular link between competition cues and defence responses in plants.

Guadalupe L Fernández-Milmanda, Carlos D Crocco, Michael Reichelt, Carlos A Mazza, Tobias G Köllner, Tong Zhang, Miriam D Cargnel, Micaela Z Lichy, Anne-Sophie Fiorucci, Christian Fankhauser, Abraham J Koo, Amy T Austin, Jonathan Gershenzon, Carlos L Ballaré,

Growth responses to competition1 and defence responses to the attack of consumer organisms2 are two classic examples of adaptive phenotypic plasticity in plants. However, the mechanistic and functional links between these responses are not well understood. Jasmonates, a family of lipid-derived signals, are potent growth inhibitors and central regulators of ... Read more >>

Nat Plants (Nature plants)
[2020, 6(3):223-230]

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The Occurrence of Sulfated Salicinoids in Poplar and Their Formation by Sulfotransferase1.

Nathalie D Lackus, Andrea Müller, Tabea D U Kröber, Michael Reichelt, Axel Schmidt, Yoko Nakamura, Christian Paetz, Katrin Luck, Richard L Lindroth, C Peter Constabel, Sybille B Unsicker, Jonathan Gershenzon, Tobias G Köllner,

Salicinoids form a specific class of phenolic glycosides characteristic of the Salicaceae. Although salicinoids accumulate in large amounts and have been shown to be involved in plant defense, their biosynthesis is unclear. We identified two sulfated salicinoids, salicin-7-sulfate and salirepin-7-sulfate, in black cottonwood (Populus trichocarpa). Both compounds accumulated in high ... Read more >>

Plant Physiol. (Plant physiology)
[2020, 183(1):137-151]

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Discovery of salicyl benzoate UDP-glycosyltransferase, a central enzyme in poplar salicinoid phenolic glycoside biosynthesis.

Christin Fellenberg, Oliver Corea, Lok-Hang Yan, Finn Archinuk, Eerik-Mikael Piirtola, Harley Gordon, Michael Reichelt, Wolfgang Brandt, Jeremy Wulff, Jürgen Ehlting, C Peter Constabel,

The salicinoids are anti-herbivore phenolic glycosides unique to the Salicaceae (Populus and Salix). They consist of a salicyl alcohol glucoside core, which is usually further acylated with benzoic, cinnamic or phenolic acids. While salicinoid structures are well known, their biosynthesis remains enigmatic. Recently, two enzymes from poplar, salicyl alcohol benzoyl ... Read more >>

Plant J. (The Plant journal : for cell and molecular biology)
[2020, 102(1):99-115]

Cited: 1 time

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Author Correction: The use of Leaf Surface Contact Cues During Oviposition Explains Field Preferences in the Willow Sawfly Nematus Oligospilus.

Patricia C Fernández, Celina L Braccini, Camila Dávila, Romina B Barrozo, M Victoria Coll Aráoz, Teresa Cerrillo, Jonathan Gershenzon, Michael Reichelt, Jorge A Zavala,

An amendment to this paper has been published and can be accessed via a link at the top of the paper. ... Read more >>

Sci Rep (Scientific reports)
[2020, 10(1):2788]

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Foliar herbivory by caterpillars and aphids differentially affects phytohormonal signalling in roots and plant defence to a root herbivore.

Peter N Karssemeijer, Michael Reichelt, Jonathan Gershenzon, Joop van Loon, Marcel Dicke,

Plant-mediated interactions are an important force in insect ecology. Through such interactions, herbivores feeding on leaves can affect root feeders. However, the mechanisms regulating the effects of above-ground herbivory on below-ground herbivores are poorly understood. Here, we investigated the performance of cabbage root fly larvae (Delia radicum) on cabbage plants ... Read more >>

Plant Cell Environ. (Plant, cell & environment)
[2020, 43(3):775-786]

Cited: 3 times

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Omega hydroxylated JA-Ile is an endogenous bioactive jasmonate that signals through the canonical jasmonate signaling pathway.

Guillermo H Jimenez-Aleman, Marilia Almeida-Trapp, Gemma Fernández-Barbero, Selena Gimenez-Ibanez, Michael Reichelt, Jyothilakshmi Vadassery, Axel Mithöfer, Julio Caballero, Wilhelm Boland, Roberto Solano,

Jasmonates are fatty acid derivatives that control several plant processes including growth, development and defense. Despite the chemical diversity of jasmonates, only jasmonoyl-L-isoleucine (JA-Ile) has been clearly characterized as the endogenous ligand of the jasmonate co-receptors (COI1-JAZs) in higher plants. Currently, it is accepted that ω-hydroxylation of JA-Ile leads to ... Read more >>

Biochim Biophys Acta Mol Cell Biol Lipids (Biochimica et biophysica acta. Molecular and cell biology of lipids)
[2019, 1864(12):158520]

Cited: 1 time

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Corrigendum to "Muscle specific kinase (MuSK) activation preserves neuromuscular junctions in the diaphragm but is not sufficient to provide a functional benefit in the SOD1G93A mouse model of ALS" Neurobiology of Disease 124 (2019) 340-352.

Arundhati Sengupta-Ghosh, Sara L Dominguez, Luke Xie, Kai H Barck, Zhiyu Jiang, Timothy Earr, Jose Imperio, Lilian Phu, Hanna G Budayeva, Donald S Kirkpatrick, Hao Cai, Dongping He, Jeffrey Eastham-Anderson, Hai Ngu, Oded Foreman, Maj Hedehus, Michael Reichelt, Isidro Hotzel, Yonglei Shang, Richard A D Carano, Gai Ayalon, Amy Easton,

Neurobiol. Dis. (Neurobiology of disease)
[2019, 132:104558]

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Sclerotinia sclerotiorum Circumvents Flavonoid Defenses by Catabolizing Flavonol Glycosides and Aglycones.

Jingyuan Chen, Chhana Ullah, Michael Reichelt, Jonathan Gershenzon, Almuth Hammerbacher,

Flavonols are widely distributed plant metabolites that inhibit microbial growth. Yet many pathogens cause disease in flavonol-containing plant tissues. We investigated how Sclerotinia sclerotiorum, a necrotrophic fungal pathogen that causes disease in a range of economically important crop species, is able to successfully infect flavonol-rich tissues of Arabidopsis (Arabidopsis thaliana). ... Read more >>

Plant Physiol. (Plant physiology)
[2019, 180(4):1975-1987]

Cited: 1 time

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The Ca2+ Channel CNGC19 Regulates Arabidopsis Defense Against Spodoptera Herbivory.

Mukesh Kumar Meena, Ramgopal Prajapati, Deepthi Krishna, Keerthi Divakaran, Yogesh Pandey, Michael Reichelt, M K Mathew, Wilhelm Boland, Axel Mithöfer, Jyothilakshmi Vadassery,

Cellular calcium elevation is an important signal used by plants for recognition and signaling of environmental stress. Perception of the generalist insect, Spodoptera litura, by Arabidopsis (Arabidopsis thaliana) activates cytosolic Ca2+ elevation, which triggers downstream defense. However, not all the Ca2+ channels generating the signal have been identified, nor are ... Read more >>

Plant Cell (The Plant cell)
[2019, 31(7):1539-1562]

Cited: 4 times

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Differential regulation of host plant adaptive genes in Pieris butterflies exposed to a range of glucosinolate profiles in their host plants.

Yu Okamura, Ai Sato, Natsumi Tsuzuki, Yuji Sawada, Masami Yokota Hirai, Hanna Heidel-Fischer, Michael Reichelt, Masashi Murakami, Heiko Vogel,

Specialist herbivores have often evolved highly sophisticated mechanisms to counteract defenses mediated by major plant secondary-metabolites. Plant species of the herbivore host range often display high chemical diversity and it is not well understood how specialist herbivores respond to this chemical diversity. Pieris larvae overcome toxic products from glucosinolate hydrolysis, ... Read more >>

Sci Rep (Scientific reports)
[2019, 9(1):7256]

Cited: 1 time

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Heterotic patterns of primary and secondary metabolites in the oilseed crop Brassica juncea.

Prabodh K Bajpai, Michael Reichelt, Rehna Augustine, Jonathan Gershenzon, Naveen C Bisht,

Heterosis refers to the superior performance of F1 hybrids over their respective parental inbred lines. Although the genetic and expression basis of heterosis have been previously investigated, the metabolic basis for this phenomenon is poorly understood. In a preliminary morphological study in Brassica juncea, we observed significant heterosis at the ... Read more >>

Heredity (Edinb) (Heredity)
[2019, 123(3):318-336]

Cited: 1 time

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Separate Pathways Contribute to the Herbivore-Induced Formation of 2-Phenylethanol in Poplar.

Jan Günther, Nathalie D Lackus, Axel Schmidt, Meret Huber, Heike-Jana Stödtler, Michael Reichelt, Jonathan Gershenzon, Tobias G Köllner,

Upon herbivory, the tree species western balsam poplar (Populus trichocarpa) produces a variety of Phe-derived metabolites, including 2-phenylethylamine, 2-phenylethanol, and 2-phenylethyl-β-d-glucopyranoside. To investigate the formation of these potential defense compounds, we functionally characterized aromatic l-amino acid decarboxylases (AADCs) and aromatic aldehyde synthases (AASs), which play important roles in the biosynthesis ... Read more >>

Plant Physiol (Plant physiology)
[2019, 180(2):767-782]

Cited: 3 times

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The Beneficial Root-Colonizing Fungus Mortierella hyalina Promotes the Aerial Growth of Arabidopsis and Activates Calcium-Dependent Responses That Restrict Alternaria brassicae-Induced Disease Development in Roots.

Joy Michal Johnson, Anatoli Ludwig, Alexandra C U Furch, Axel Mithöfer, Sandra Scholz, Michael Reichelt, Ralf Oelmüller,

The endophytic fungus Mortierella hyalina colonizes the roots of Arabidopsis thaliana and stimulates growth and biomass production of the aerial parts but not of roots. An exudate fraction from the fungus induces rapid and transient cytoplasmic Ca2+elevation in the roots. The Ca2+ response does not require the well-characterized (co)receptors BAK1, ... Read more >>

Mol. Plant Microbe Interact. (Molecular plant-microbe interactions : MPMI)
[2019, 32(3):351-363]

Cited: 3 times

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Plant volatile emission depends on the species composition of the neighboring plant community.

Rose N Kigathi, Wolfgang W Weisser, Michael Reichelt, Jonathan Gershenzon, Sybille B Unsicker,

BACKGROUND:Plants grow in multi-species communities rather than monocultures. Yet most studies on the emission of volatile organic compounds (VOCs) from plants in response to insect herbivore feeding focus on one plant species. Whether the presence and identity of neighboring plants or plant community attributes, such as plant species richness and ... Read more >>

BMC Plant Biol. (BMC plant biology)
[2019, 19(1):58]

Cited: 5 times

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Muscle specific kinase (MuSK) activation preserves neuromuscular junctions in the diaphragm but is not sufficient to provide a functional benefit in the SOD1G93A mouse model of ALS.

Arundhati Sengupta-Ghosh, Sara L Dominguez, Luke Xie, Kai H Barck, Zhiyu Jiang, Timothy Earr, Jose Imperio, Lilian Phu, Hanna G Budayeva, Donald S Kirkpatrick, Hao Cai, Jeffrey Eastham-Anderson, Hai Ngu, Oded Foreman, Maj Hedehus, Michael Reichelt, Isidro Hotzel, Yonglei Shang, Richard A D Carano, Gai Ayalon, Amy Easton,

Amyotrophic lateral sclerosis (ALS), a neurodegenerative disease affecting motor neurons, is characterized by rapid decline of motor function and ultimately respiratory failure. As motor neuron death occurs late in the disease, therapeutics that prevent the initial disassembly of the neuromuscular junction may offer optimal functional benefit and delay disease progression. ... Read more >>

Neurobiol. Dis. (Neurobiology of disease)
[2019, 124:340-352]

Cited: 5 times

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The nitrilase PtNIT1 catabolizes herbivore-induced nitriles in Populus trichocarpa.

Jan Günther, Sandra Irmisch, Nathalie D Lackus, Michael Reichelt, Jonathan Gershenzon, Tobias G Köllner,

BACKGROUND:Nitrilases are nitrile-converting enzymes commonly found within the plant kingdom that play diverse roles in nitrile detoxification, nitrogen recycling, and phytohormone biosynthesis. Although nitrilases are present in all higher plants, little is known about their function in trees. Upon herbivory, poplars produce considerable amounts of toxic nitriles such as benzyl ... Read more >>

BMC Plant Biol. (BMC plant biology)
[2018, 18(1):251]

Cited: 1 time

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Eyes on the future - evidence for trade-offs between growth, storage and defense in Norway spruce.

Jianbei Huang, Almuth Hammerbacher, Alexander Weinhold, Michael Reichelt, Gerd Gleixner, Thomas Behrendt, Nicole M van Dam, Anna Sala, Jonathan Gershenzon, Susan Trumbore, Henrik Hartmann,

Carbon (C) allocation plays a central role in tree responses to environmental changes. Yet, fundamental questions remain about how trees allocate C to different sinks, for example, growth vs storage and defense. In order to elucidate allocation priorities, we manipulated the whole-tree C balance by modifying atmospheric CO2 concentrations [CO2 ... Read more >>

New Phytol (The New phytologist)
[2019, 222(1):144-158]

Cited: 2 times

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Microbiome-assisted carrion preservation aids larval development in a burying beetle.

Shantanu P Shukla, Camila Plata, Michael Reichelt, Sandra Steiger, David G Heckel, Martin Kaltenpoth, Andreas Vilcinskas, Heiko Vogel,

The ability to feed on a wide range of diets has enabled insects to diversify and colonize specialized niches. Carrion, for example, is highly susceptible to microbial decomposers, but is kept palatable several days after an animal's death by carrion-feeding insects. Here we show that the burying beetle Nicrophorus vespilloides ... Read more >>

Proc. Natl. Acad. Sci. U.S.A. (Proceedings of the National Academy of Sciences of the United States of America)
[2018, 115(44):11274-11279]

Cited: 6 times

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Interference between arsenic-induced toxicity and hypoxia.

Vijay Kumar, Lara Vogelsang, Thorsten Seidel, Romy Schmidt, Michael Weber, Michael Reichelt, Andreas Meyer, Stephan Clemens, Shanti S Sharma, Karl-Josef Dietz,

Plants often face combinatorial stresses in their natural environment. Here, arsenic (As) toxicity was combined with hypoxia (Hpx) in the roots of Arabidopsis thaliana as it often occurs in nature. Arsenic inhibited growth of both roots and leaves, whereas root growth almost entirely ceased in Hpx. Growth efficiently resumed, and ... Read more >>

Plant Cell Environ (Plant, cell & environment)
[2019, 42(2):574-590]

Cited: 0 times

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