keyword
MENU ▼
Read by QxMD icon Read
search

arthropod developmental genes

keyword
https://www.readbyqxmd.com/read/29237851/micrornas-regulate-the-sesquiterpenoid-hormonal-pathway-in-drosophila-and-other-arthropods
#1
Zhe Qu, William G Bendena, Wenyan Nong, Kenneth W Siggens, Fernando G Noriega, Zhen-Peng Kai, Yang-Yang Zang, Alex C Koon, Ho Yin Edwin Chan, Ting Fung Chan, Ka Hou Chu, Hon Ming Lam, Michael Akam, Stephen S Tobe, Jerome Ho Lam Hui
Arthropods comprise the majority of all described animal species, and understanding their evolution is a central question in biology. Their developmental processes are under the precise control of distinct hormonal regulators, including the sesquiterpenoids juvenile hormone (JH) and methyl farnesoate. The control of the synthesis and mode of action of these hormones played important roles in the evolution of arthropods and their adaptation to diverse habitats. However, the precise roles of non-coding RNAs, such as microRNAs (miRNAs), controlling arthropod hormonal pathways are unknown...
December 20, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29194942/rnai-technology-in-crop-protection-against-arthropod-pests-pathogens-and-nematodes
#2
REVIEW
Moises Zotti, Ericmar Avila Dos Santos, Deise Cagliari, Olivier Christiaens, Clauvis Nji Tizi Taning, Guy Smagghe
Scientists have made significant progress to understand and unravel several aspects of dsRNA-mediated gene silencing during the last two decades. Now that the RNAi mechanism is well understood, it is time to point out some directions on how to transfer the acquired knowledge into useful applications for agriculture and crop protection. Some RNAi-based products are already available for farmers and more are expected to reach the market soon. The tailor-made dsRNA as an active ingredient for biopesticide formulations is considered a raw material that can be directed to diverse purposes, from pest control and bee protection against viruses to pesticide resistance management...
November 30, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29182503/molecular-evolution-of-spider-vision-new-opportunities-familiar-players
#3
Nathan I Morehouse, Elke K Buschbeck, Daniel B Zurek, Mireille Steck, Megan L Porter
Spiders are among the world's most species-rich animal lineages, and their visual systems are likewise highly diverse. These modular visual systems, composed of four pairs of image-forming "camera" eyes, have taken on a huge variety of forms, exhibiting variation in eye size, eye placement, image resolution, and field of view, as well as sensitivity to color, polarization, light levels, and motion cues. However, despite this conspicuous diversity, our understanding of the genetic underpinnings of these visual systems remains shallow...
August 2017: Biological Bulletin
https://www.readbyqxmd.com/read/29075305/the-flipflop-orphan-genes-are-required-for-limb-bud-eversion-in-the-tribolium-embryo
#4
Susanne Thümecke, Anke Beermann, Martin Klingler, Reinhard Schröder
BACKGROUND: Unlike Drosophila but similar to other arthropod and vertebrate embryos, the flour beetle Tribolium castaneum develops everted limb buds during embryogenesis. However, the molecular processes directing the evagination of epithelia are only poorly understood. RESULTS: Here we show that the newly discovered genes Tc-flipflop1 and Tc-flipflop2 are involved in regulating the directional budding of appendages. RNAi-knockdown of Tc-flipflop results in a variety of phenotypic traits...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28993201/ancient-genetic-redundancy-of-eyeless-and-twin-of-eyeless-in-the-arthropod-ocular-segment
#5
Markus Friedrich
Pax6 transcription factors are essential upstream regulators in the developing anterior brain and peripheral visual system of most bilaterian animals. While a single homolog is in charge of these functions in vertebrates, two Pax6 genes are in Drosophila: eyeless (ey) and twin of eyeless (toy). At first glance, their co-existence seems sufficiently explained by their differential involvement in the specification of two types of insect visual organs: the lateral compound eyes (ey) and the dorsal ocelli (toy)...
October 6, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28957522/gene-regulatory-networks-homology-and-the-early-panarthropod-fossil-record
#6
Sarah M Tweedt
The arthropod body plan is widely believed to have derived from an ancestral form resembling Cambrian-aged fossil lobopodians, and interpretations of morphological and molecular data have long favored this hypothesis. It is possible, however, that appendages and other morphologies observed in extinct and living panarthropods evolved independently. The key to distinguishing between morphological homology and homoplasy lies in the study of developmental gene regulatory networks (GRNs), and specifically, in determining the unique genetic circuits that construct characters...
September 1, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28957520/chelicerates-and-the-conquest-of-land-a-view-of-arachnid-origins-through-an-evo-devo-spyglass
#7
Prashant P Sharma
The internal phylogeny of Chelicerata and the attendant evolutionary scenario of arachnid terrestrialization have a long and contentious history. Previous studies of developmental gene expression data have suggested that respiratory systems of spiders, crustaceans, and insects are all serially homologous structures derived from the epipods (outer appendage rami) of the arthropod ancestor, corresponding to an ancestral gill. A separate body of evidence has suggested that the respiratory systems of arachnids are modified, inverted telopods (inner rami, or legs)...
September 1, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28953896/dynamic-patterning-by-the-drosophila-pair-rule-network-reconciles-long-germ-and-short-germ-segmentation
#8
Erik Clark
Drosophila segmentation is a well-established paradigm for developmental pattern formation. However, the later stages of segment patterning, regulated by the "pair-rule" genes, are still not well understood at the system level. Building on established genetic interactions, I construct a logical model of the Drosophila pair-rule system that takes into account the demonstrated stage-specific architecture of the pair-rule gene network. Simulation of this model can accurately recapitulate the observed spatiotemporal expression of the pair-rule genes, but only when the system is provided with dynamic "gap" inputs...
September 2017: PLoS Biology
https://www.readbyqxmd.com/read/28952064/effects-of-transgenic-overexpression-of-diapause-hormone-and-diapause-hormone-receptor-genes-on-non-diapause-silkworm
#9
Chunying Gong, Wenhui Zeng, Tianyang Zhang, Rongpeng Liu, Yao Ou, Junwen Ai, Zhonghuai Xiang, Hanfu Xu
Diapause is a state of developmental arrest that is most often observed in arthropods, especially insects. The domesticated silkworm, Bombyx mori, is a typical insect that enters diapause at an early embryonic stage. Previous studies have revealed that the diapause hormone (DH) signaling molecules, especially the core members DH and DH receptor 1 (DHR1), are crucial for the determination of embryonic diapause in diapause silkworm strains. However, whether they function in non-diapause silkworm strains remains largely unknown...
September 26, 2017: Transgenic Research
https://www.readbyqxmd.com/read/28534089/comparison-of-microbiomes-between-red-poultry-mite-populations-dermanyssus-gallinae-predominance-of-bartonella-like-bacteria
#10
Jan Hubert, Tomas Erban, Jan Kopecky, Bruno Sopko, Marta Nesvorna, Martina Lichovnikova, Sabine Schicht, Christina Strube, Olivier Sparagano
Blood feeding red poultry mites (RPM) serve as vectors of pathogenic bacteria and viruses among vertebrate hosts including wild birds, poultry hens, mammals, and humans. The microbiome of RPM has not yet been studied by high-throughput sequencing. RPM eggs, larvae, and engorged adult/nymph samples obtained in four poultry houses in Czechia were used for microbiome analyses by Illumina amplicon sequencing of the 16S ribosomal RNA (rRNA) gene V4 region. A laboratory RPM population was used as positive control for transcriptome analysis by pyrosequencing with identification of sequences originating from bacteria...
November 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28469016/developmental-roles-of-tyrosine-metabolism-enzymes-in-the-blood-sucking-insect-rhodnius-prolixus
#11
Marcos Sterkel, Pedro L Oliveira
The phenylalanine/tyrosine degradation pathway is frequently described as a catabolic pathway that funnels aromatic amino acids into citric acid cycle intermediates. Previously, we demonstrated that the accumulation of tyrosine generated during the hydrolysis of blood meal proteins in Rhodnius prolixus is potentially toxic, a harmful outcome that is prevented by the action of the first two enzymes in the tyrosine degradation pathway. In this work, we further evaluated the relevance of all other enzymes involved in phenylalanine/tyrosine metabolism in the physiology of this insect...
May 17, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28465040/investigation-of-endoderm-marker-genes-during-gastrulation-and-gut-development-in-the-velvet-worm-euperipatoides-kanangrensis
#12
Ralf Janssen, Graham E Budd
The ancestral state of animal gastrulation and its bearing for our understanding of bilaterian evolution still is one of the most controversially discussed topics in the field of evolutionary and developmental biology. One hypothesis, the so-called amphistomy scenario, suggests the presence of a slit-like blastopore in the last common ancestor of Bilateria. Onychophoran ontogeny at least superficially appears to support this scenario since a ventral groove clearly forms during gastrulation. The origin and nature of this groove, however, is another matter of ongoing controversy; i...
July 1, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28432834/molecular-control-of-gut-formation-in-the-spider-parasteatoda-tepidariorum
#13
Natália Martins Feitosa, Matthias Pechmann, Evelyn E Schwager, Vitória Tobias-Santos, Alistair P McGregor, Wim G M Damen, Rodrigo Nunes da Fonseca
The development of a digestive system is an essential feature of bilaterians. Studies of the molecular control of gut formation in arthropods have been studied in detail in the fruit fly Drosophila melanogaster. However, little is known in other arthropods, especially in noninsect arthropods. To better understand the evolution of arthropod alimentary system, we investigate the molecular control of gut development in the spider Parasteatoda tepidariorum (Pt), the primary chelicerate model species for developmental studies...
May 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28257485/deep-sequencing-of-the-prothoracic-gland-transcriptome-reveals-new-players-in-insect-ecdysteroidogenesis
#14
Takayoshi Nakaoka, Masatoshi Iga, Tetsuya Yamada, Ikumi Koujima, Mika Takeshima, Xiangying Zhou, Yutaka Suzuki, Mari H Ogihara, Hiroshi Kataoka
Ecdysteroids are steroid hormones that induce molting and determine developmental timing in arthropods. In insect larva, the prothoracic gland (PG) is a major organ for ecdysone synthesis and release. Released ecdysone is converted into the active form, 20-hydroxyecdysone (20E) in the peripheral tissues. All processes from ecdysone synthesis and release from the PG to its conversion to 20E are called ecdysteroidogenesis and are under the regulation of numerous factors expressed in the PG and peripheral tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28238736/evolutionary-variation-in-neural-gene-expression-in-the-developing-sense-organs-of-the-crustacean-daphnia-magna
#15
Marleen Klann, Angelika Stollewerk
Arthropods have numerous sense organs, which are adapted to their habitat. While some sense organs are similar in structure and function in all arthropod groups, structural differences in functionally related sense organs have been described, as well as the absence of particular sense organ subtypes in individual arthropod groups. Here we address the question of how the diverse structures of arthropod sense organs have evolved by analysing the underlying molecular developmental processes in a crustacean, an arthropod group that has been neglected so far...
April 1, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28225068/relish2-mediates-bursicon-homodimer-induced-prophylactic-immunity-in-the-mosquito-aedes-aegypti
#16
Hongwei Zhang, Shengzhang Dong, Xi Chen, David Stanley, Brenda Beerntsen, Qili Feng, Qisheng Song
Bursicon is a neuropeptide hormone consisting of two cystine-knot proteins (burs α and burs β), responsible for cuticle tanning and other developmental processes in insects. Recent studies show that each bursicon subunit forms homodimers that induce prophylactic immunity in Drosophila melanogaster. Here, we investigated the hypothesis that bursicon homodimers act in prophylactic immunity in insects, and possibly arthropods, generally, using the mosquito, Aedes aegypti. We found that burs α and burs β are expressed in larvae, pupae and newly emerged adults...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28191025/from-egg-to-no-body-an-overview-and-revision-of-developmental-pathways-in-the-ancient-arthropod-lineage-pycnogonida
#17
REVIEW
Georg Brenneis, Ekaterina V Bogomolova, Claudia P Arango, Franz Krapp
BACKGROUND: Arthropod diversity is unparalleled in the animal kingdom. The study of ontogeny is pivotal to understand which developmental processes underlie the incredible morphological disparity of arthropods and thus to eventually unravel evolutionary transformations leading to their success. Work on laboratory model organisms has yielded in-depth data on numerous developmental mechanisms in arthropods. Yet, although the range of studied taxa has increased noticeably since the advent of comparative evolutionary developmental biology (evo-devo), several smaller groups remain understudied...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28158242/de-novo-characterization-of-micrornas-in-oriental-fruit-moth-grapholita-molesta-and-selection-of-reference-genes-for-normalization-of-microrna-expression
#18
Xiu Wang, Yisong Li, Jing Zhang, Qingwen Zhang, Xiaoxia Liu, Zhen Li
MicroRNAs (miRNAs) are a group of endogenous non-coding small RNAs that have critical regulatory functions in almost all known biological processes at the post-transcriptional level in a variety of organisms. The oriental fruit moth Grapholita molesta is one of the most serious pests in orchards worldwide and threatens the production of Rosacea fruits. In this study, a de novo small RNA library constructed from mixed stages of G. molesta was sequenced through Illumina sequencing platform and a total of 536 mature miRNAs consisting of 291 conserved and 245 novel miRNAs were identified...
2017: PloS One
https://www.readbyqxmd.com/read/27939724/wafs-lead-molting-retardation-of-naupliar-stages-with-down-regulated-expression-profiles-of-chitin-metabolic-pathway-and-related-genes-in-the-copepod-tigriopus-japonicus
#19
Dae-Sik Hwang, Min-Chul Lee, Do-Hyun Kyung, Hui-Su Kim, Jeonghoon Han, Il-Chan Kim, Jayesh Puthumana, Jae-Seong Lee
Oil pollution is considered being disastrous to marine organisms and ecosystems. As molting is critical in the developmental process of arthropods in general and copepods, in particular, the impact will be adverse if the target of spilled oil is on molting. Thus, we investigated the harmful effects of water accommodated fractions (WAFs) of crude oil with an emphasis on inhibition of chitin metabolic pathways related genes and developmental retardation in the copepod Tigriopus japonicus. Also, we analysed the ontology and domain of chitin metabolic pathway genes and mRNA expression patterns of developmental stage-specific genes...
March 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/27890717/ecdysone-receptor-ecr-and-ultraspiracle-usp-genes-from-the-cyclopoid-copepod-paracyclopina-nana-identification-and-expression-in-response-to-water-accommodated-fractions-wafs
#20
Jayesh Puthumana, Min-Chul Lee, Jeonghoon Han, Hui-Su Kim, Dae-Sik Hwang, Jae-Seong Lee
Ecdysteroid hormones are pivotal in the development, growth, and molting of arthropods, and the hormone pathway is triggered by binding ecdysteroid to a heterodimer of the two nuclear receptors; ecdysone receptors (EcR) and ultraspiracle (USP). We have characterized EcR and USP genes, and their 5'-untranslated region (5'-UTR) from the copepod Paracyclopina nana, and studied mRNA transcription levels in post-embryonic stages and in response to water accommodated fractions (WAFs) of crude oil. The open reading frames (ORF) of EcR and USP were 1470 and 1287bp that encoded 490 and 429 amino acids with molecular weight of 121...
February 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
keyword
keyword
111095
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"