Full Text Journal Articles by
Author Shai Morin

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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, :]

Cited: 0 times

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Can CRISPR gene drive work in pest and beneficial haplodiploid species?

Jun Li, Ofer Aidlin Harari, Anna-Louise Doss, Linda L Walling, Peter W Atkinson, Shai Morin, Bruce E Tabashnik,

Gene drives based on CRISPR/Cas9 have the potential to reduce the enormous harm inflicted by crop pests and insect vectors of human disease, as well as to bolster valued species. In contrast with extensive empirical and theoretical studies in diploid organisms, little is known about CRISPR gene drive in haplodiploids, ... Read more >>

(Evolutionary applications)
[2020, 13(9):2392-2403]

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Can CRISPR gene drive work in pest and beneficial haplodiploid species?

Jun Li, Ofer Aidlin Harari, Anna‐Louise Doss, Linda L. Walling, Peter W. Atkinson, Shai Morin, Bruce E. Tabashnik,

Abstract Gene drives based on CRISPR/Cas9 have the potential to reduce the enormous harm inflicted by crop pests and insect vectors of human disease, as well as to bolster valued species. In contrast with extensive empirical and theoretical studies in diploid organisms, little is known about CRISPR gene drive in ... Read more >>

(Evolutionary applications)
[2020, 13(9):2392-2403]

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Molecular Evolution of the Glutathione S-Transferase Family in the Bemisia tabaci Species Complex.

Ofer Aidlin Harari, Diego Santos-Garcia, Mirit Musseri, Pnina Moshitzky, Mitulkumar Patel, Paul Visendi, Susan Seal, Rotem Sertchook, Osnat Malka, Shai Morin,

The glutathione S-transferase (GST) family plays an important role in the adaptation of herbivorous insects to new host plants and other environmental constrains. The family codes for enzymes that neutralize reactive oxygen species and phytotoxins through the conjugation of reduced glutathione. Here, we studied the molecular evolution of the GST ... Read more >>

Genome Biol Evol (Genome biology and evolution)
[2020, 12(2):3857-3872]

Cited: 0 times

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Inside out: microbiota dynamics during host-plant adaptation of whiteflies.

Diego Santos-Garcia, Natividad Mestre-Rincon, Einat Zchori-Fein, Shai Morin,

While most insect herbivores are selective feeders, a small proportion of them feed on a wide range of plants. This polyphagous habit requires overcoming a remarkable array of defenses, which often necessitates an adaptation period. Efforts for understanding the mechanisms involved mostly focus on the insect's phenotypic plasticity. Here, we ... Read more >>

ISME J (The ISME journal)
[2020, 14(3):847-856]

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Complete Assembly of the Genome of an Acidovorax citrulli Strain Reveals a Naturally Occurring Plasmid in This Species.

Rongzhi Yang, Diego Santos Garcia, Francisco Pérez Montaño, Gustavo Mateus da Silva, Mei Zhao, Irene Jiménez Guerrero, Tally Rosenberg, Gong Chen, Inbar Plaschkes, Shai Morin, Ron Walcott, Saul Burdman,

Acidovorax citrulli is the causal agent of bacterial fruit blotch (BFB), a serious threat to cucurbit crop production worldwide. Based on genetic and phenotypic properties, A. citrulli strains are divided into two major groups: group I strains have been generally isolated from melon and other non-watermelon cucurbits, while group II ... Read more >>

(Frontiers in microbiology)
[2019, 10:1400]

Cited: 2 times

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To B or Not to B: Comparative Genomics Suggests Arsenophonus as a Source of B Vitamins in Whiteflies.

Diego Santos-Garcia, Ksenia Juravel, Shiri Freilich, Einat Zchori-Fein, Amparo Latorre, Andrés Moya, Shai Morin, Francisco J Silva,

Insect lineages feeding on nutritionally restricted diets such as phloem sap, xylem sap, or blood, were able to diversify by acquiring bacterial species that complement lacking nutrients. These bacteria, considered obligate/primary endosymbionts, share a long evolutionary history with their hosts. In some cases, however, these endosymbionts are not able to ... Read more >>

(Frontiers in microbiology)
[2018, 9:2254]

Cited: 6 times

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Species-complex diversification and host-plant associations in Bemisia tabaci: A plant-defence, detoxification perspective revealed by RNA-Seq analyses.

Osnat Malka, Diego Santos-Garcia, Ester Feldmesser, Elad Sharon, Renate Krause-Sakate, Hélène Delatte, Sharon van Brunschot, Mitulkumar Patel, Paul Visendi, Habibu Mugerwa, Susan Seal, John Colvin, Shai Morin,

Insect-plant associations and their role in diversification are mostly studied in specialists. Here, we aimed to identify macroevolution patterns in the relationships between generalists and their host plants that have the potential to promote diversification. We focused on the Bemisia tabaci species complex containing more than 35 cryptic species. Mechanisms ... Read more >>

Mol Ecol (Molecular ecology)
[2018, 27(21):4241-4256]

Cited: 3 times

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Targeting detoxification genes by phloem-mediated RNAi: A new approach for controlling phloem-feeding insect pests.

Galit Eakteiman, Rita Moses-Koch, Pnina Moshitzky, Natividad Mestre-Rincon, Daniel G Vassão, Katrin Luck, Rotem Sertchook, Osnat Malka, Shai Morin,

Many phloem-feeding insects are considered severe pests of agriculture and are controlled mainly by chemical insecticides. Continued extensive use of these inputs is environmentally undesirable, and also leads to the development of insecticide resistance. Here, we used a plant-mediated RNA interference (RNAi) approach, to develop a new control strategy for ... Read more >>

Insect Biochem. Mol. Biol. (Insect biochemistry and molecular biology)
[2018, 100:10-21]

Cited: 2 times

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To B or not to B: Arsenophonus as a source of B-vitamins in whiteflies

Diego Santos-Garcia, Ksenia Juravel, Shiri Freilich, Einat Zchori-Fein, Amparo Latorre, Andrés Moya, Shai Morin, Francisco Silva,

1 Abstract Insect lineages feeding on nutritionally restricted diets such as phloem, xylem, or blood, were able to diversify by acquiring bacterial species that complemented the missing nutrients. These bacteria, considered obligate/primary endosymbionts, share a long evolutionary history with their hosts. In some cases, however, these endosymbionts are not able ... Read more >>

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The All-Rounder Sodalis: A New Bacteriome-Associated Endosymbiont of the Lygaeoid Bug Henestaris halophilus (Heteroptera: Henestarinae) and a Critical Examination of Its Evolution.

Diego Santos-Garcia, Francisco J Silva, Shai Morin, Konrad Dettner, Stefan Martin Kuechler,

Hemipteran insects are well-known in their ability to establish symbiotic relationships with bacteria. Among them, heteropteran insects present an array of symbiotic systems, ranging from the most common gut crypt symbiosis to the more restricted bacteriome-associated endosymbiosis, which have only been detected in members of the superfamily Lygaeoidea and the ... Read more >>

Genome Biol Evol (Genome biology and evolution)
[2017, 9(10):2893-2910]

Cited: 6 times

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Projecting pest population dynamics under global warming: the combined effect of inter- and intra-annual variations.

Royi Zidon, Hirotsugu Tsueda, Efrat Morin, Shai Morin,

The typical short generation length of insects makes their population dynamics highly sensitive not only to mean annual temperatures but also to their intra-annual variations. To consider the combined effect of both thermal factors under global warming, we propose a modeling framework that links general circulation models (GCMs) with a ... Read more >>

Ecol Appl (Ecological applications : a publication of the Ecological Society of America)
[2016, 26(4):1198-1210]

Cited: 3 times

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Glucosinolate Desulfation by the Phloem-Feeding Insect Bemisia tabaci.

Osnat Malka, Anton Shekhov, Michael Reichelt, Jonathan Gershenzon, Daniel Giddings Vassão, Shai Morin,

Glucosinolates are plant secondary defense metabolites confined nearly exclusively to the order Brassicales. Upon tissue rupture, glucosinolates are hydrolyzed to various bioactive breakdown products by the endogenous plant enzyme myrosinase. As the feeding of chewing insect herbivores is associated with plant tissue damage, these insects have developed several independent strategies ... Read more >>

J. Chem. Ecol. (Journal of chemical ecology)
[2016, 42(3):230-235]

Cited: 7 times

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Only a minority of broad-range detoxification genes respond to a variety of phytotoxins in generalist Bemisia tabaci species.

Eyal Halon, Galit Eakteiman, Pnina Moshitzky, Moshe Elbaz, Michal Alon, Nena Pavlidi, John Vontas, Shai Morin,

Generalist insect can utilize two different modes for regulating their detoxification genes, the constitutive mode and the induced mode. Here, we used the Bemisia tabaci sibling species MEAM1 and MED, as a model system for studying constitutive and induced detoxification resistance and their associated tradeoffs. B. tabaci adults were allowed ... Read more >>

Sci Rep (Scientific reports)
[2015, 5:17975]

Cited: 5 times

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Bemisia tabaci females from the Mediterranean (Q) species detect and avoid laying eggs in the presence of pyriproxyfen, a juvenile hormone analogue.

Pnina Moshitzky, Shai Morin,

Pyriproxyfen, a juvenile hormone analogue, disrupts embryogenesis, metamorphosis and adult formation in Bemisia tabaci, but does not directly affect adult females. The effect of pyriproxyfen on egg-laying preference and performance of B. tabaci females and the influence of resistance to pyriproxyfen on these reproductive behaviours were studied.Choice experiments utilising cotton ... Read more >>

Pest Manag. Sci. (Pest management science)
[2014, 70(10):1468-1476]

Cited: 2 times

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Activation of the Phenylpropanoid pathway in Nicotiana tabacum improves the performance of the whitefly Bemisia tabaci via reduced jasmonate signaling.

Michal Alon, Osnat Malka, Galit Eakteiman, Moshe Elbaz, Michal Moyal Ben Zvi, Alexander Vainstein, Shai Morin,

BACKGROUND: Phloem-feeding insects can manipulate plant-induced resistance and are able to suppress effective jasmonic acid/ethylene (JA/ET) defenses by the induction of inefficient salicylic acid (SA) based responses. As a result, activation of the phenylpropanoid biosynthesis pathway in transgenic plants is anticipated to cause complex interactions between phloem-feeding insects and their ... Read more >>

PLoS ONE (PloS one)
[2013, 8(10):e76619]

Cited: 9 times

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Arabidopsis thaliana plants with different levels of aliphatic- and indolyl-glucosinolates affect host selection and performance of Bemisia tabaci.

Oshry Markovich, Dinesh Kafle, Moshe Elbaz, Sergey Malitsky, Asaph Aharoni, Alexander Schwarzkopf, Jonathan Gershenzon, Shai Morin,

Generalist insects show reduced selectivity when subjected to similar, but not identical, host plant chemical signatures. Here, we produced transgenic Arabidopsis thaliana plants that over-express genes regulating the aliphatic- and indolyl- glucosinolates biosynthetic pathways with either a constitutive (CaMV 35S) or a phloem-specific promoter (AtSUC2). This allowed us to examine ... Read more >>

J. Chem. Ecol. (Journal of chemical ecology)
[2013, 39(11-12):1361-1372]

Cited: 8 times

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Inoculation of tomato plants with rhizobacteria enhances the performance of the phloem-feeding insect Bemisia tabaci.

Roee Shavit, Maya Ofek-Lalzar, Saul Burdman, Shai Morin,

In their natural environment, plants experience multiple biotic interactions and respond to this complexity in an integrated manner. Therefore, plant responses to herbivory are flexible and depend on the context and complexity in which they occur. For example, plant growth promoting rhizobacteria (PGPR) can enhance plant growth and induce resistance ... Read more >>

(Frontiers in plant science)
[2013, 4:306]

Cited: 12 times

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Using Drosophila melanogaster to validate metabolism-based insecticide resistance from insect pests.

Phillip J Daborn, Christopher Lumb, Thomas W R Harrop, Alex Blasetti, Shivani Pasricha, Shai Morin, Sara N Mitchell, Martin J Donnelly, Pie Müller, Philip Batterham,

Identifying molecular mechanisms of insecticide resistance is important for preserving insecticide efficacy, developing new insecticides and implementing insect control. The metabolic detoxification of insecticides is a widespread resistance mechanism. Enzymes with the potential to detoxify insecticides are commonly encoded by members of the large cytochrome P450, glutathione S-transferase and carboxylesterase ... Read more >>

Insect Biochem. Mol. Biol. (Insect biochemistry and molecular biology)
[2012, 42(12):918-924]

Cited: 22 times

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Sustained susceptibility of pink bollworm to Bt cotton in the United States.

Bruce E Tabashnik, Shai Morin, Gopalan C Unnithan, Alex J Yelich, Christa Ellers-Kirk, Virginia S Harpold, Mark S Sisterson, Peter C Ellsworth, Timothy J Dennehy, Larry Antilla, Leighton Liesner, Mike Whitlow, Robert T Staten, Jeffrey A Fabrick, Xianchun Li, Yves Carrière,

Evolution of resistance by pests can reduce the benefits of transgenic crops that produce toxins from Bacillus thuringiensis (Bt) for insect control. One of the world's most important cotton pests, pink bollworm (Pectinophora gossypiella), has been targeted for control by transgenic cotton producing Bt toxin Cry1Ac in several countries for ... Read more >>

GM Crops Food (GM crops & food)
[2012, 3(3):194-200]

Cited: 8 times

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Insights into the transcriptomics of polyphagy: Bemisia tabaci adaptability to phenylpropanoids involves coordinated expression of defense and metabolic genes.

Michal Alon, Moshe Elbaz, Michal Moyal Ben-Zvi, Ester Feldmesser, Alexander Vainstein, Shai Morin,

The whitefly Bemisia tabaci is a major generalist agricultural pest of field and horticultural crops world-wide. Despite its importance, the molecular bases of defense mechanisms in B. tabaci against major plant secondary defense compounds, such as the phenylpropanoids, remain unknown. Our experimental system utilized transgenic Nicotiana tabacum plants constitutively expressing ... Read more >>

Insect Biochem. Mol. Biol. (Insect biochemistry and molecular biology)
[2012, 42(4):251-263]

Cited: 14 times

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Extraordinary resistance to insecticides reveals exotic Q biotype of Bemisia tabaci in the New World.

Timothy J Dennehy, Benjamin A Degain, Virginia S Harpold, Marni Zaborac, Shai Morin, Jeffrey A Fabrick, Robert L Nichols, Judith K Brown, Frank J Byrne, Xianchun Li,

A strain of the whitefly Bemisia tabaci (Gennadius) possessing unusually high levels of resistance to a wide range of insecticides was discovered in 2004 in the course of routine resistance monitoring in Arizona. The multiply resistant insects, collected from poinsettia (Euphorbia pulcherrima Willd. ex Klotzsch) plants purchased at a retail ... Read more >>

J. Econ. Entomol. (Journal of economic entomology)
[2010, 103(6):2174-2186]

Cited: 30 times

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Structural model and functional characterization of the Bemisia tabaci CYP6CM1vQ, a cytochrome P450 associated with high levels of imidacloprid resistance.

Iris Karunker, Evangelia Morou, Dimitra Nikou, Ralf Nauen, Rotem Sertchook, Bradley J Stevenson, Mark J I Paine, Shai Morin, John Vontas,

The neonicotinoid imidacloprid is one of the most important insecticides worldwide. It is used extensively against the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae), an insect pest of eminent importance globally, which was also the first pest to develop high levels of resistance against imidacloprid and other neonicotinoids in the field. Recent ... Read more >>

Insect Biochem. Mol. Biol. (Insect biochemistry and molecular biology)
[2009, 39(10):697-706]

Cited: 67 times

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The gene road to royalty--differential expression of hydroxylating genes in the mandibular glands of the honeybee.

Osnat Malka, Iris Karunker, Adva Yeheskel, Shai Morin, Abraham Hefetz,

The advances in honeybee sociogenomics have paved the way for the study of social communication processes at the gene level, in particular the expression of caste-specific pheromones. The queen honeybee mandibular pheromone provides an excellent model system, in that biosynthesis of the hydroxylating fatty acid caste-specific pheromone appears to be ... Read more >>

FEBS J. (The FEBS journal)
[2009, 276(19):5481-5490]

Cited: 9 times

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Organophosphates' resistance in the B-biotype of Bemisia tabaci (Hemiptera: Aleyrodidae) is associated with a point mutation in an ace1-type acetylcholinesterase and overexpression of carboxylesterase.

Michal Alon, Fishel Alon, Ralf Nauen, Shai Morin,

Organophosphate (OP) insecticides are inhibitors of the enzyme acetylcholinesterase (AChE), which terminates nerve impulses by catalyzing the hydrolysis of the neurotransmitter acetylcholine. Previous biochemical studies in Bemisia tabaci (Hemiptera: Aleyrodidae) proposed the existence of two molecular mechanisms for OPs' resistance: carboxylesterase- (COE) mediated hydrolysis or sequestration and decreased sensitivity of ... Read more >>

Insect Biochem. Mol. Biol. (Insect biochemistry and molecular biology)
[2008, 38(10):940-949]

Cited: 51 times

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