Abstract:
:In insects, especially in mosquitoes that are adult blood feeders, midgut remodeling is an important event during metamorphosis. It involves two processes viz., programmed cell death (PCD) of larval cells, and proliferation and differentiation of imaginal cells to form pupal/adult midgut. These processes are regulated by 20-hydroxyecdysone (20E) and juvenile hormone (JH), but the signaling mechanisms, which trigger specific changes remain poorly understood. Here, we report stage- and cell-specific expression of ecydone receptor (EcR), ultraspiracle (USP), broad (Br), E75B and hormone receptor 3 (HR3) during midgut remodeling in Aedes aegypti. In Ae. aegypti both EcR and USP genes code for two isoforms each and the expression of mRNA for these isoforms showed both stage- and cell-specific regulation. In general, EcR-B and USP-A mRNAs were detected during larval stages in larval cells, and EcR-A and USP-B mRNAs were detected during pupal stages in imaginal cells. These data suggest that EcR-B/USP-A heterodimer is important for PCD of larval cells and EcR-A/USP-B heterodimer is important for formation of pupal/adult midgut. Broad Z1 mRNA was detected only in the larval cells suggesting its primary role in PCD. It is likely that E75B and HR3 are probably involved in both PCD and imaginal cell proliferation and differentiation as their mRNAs were expressed in the larval as well as in imaginal cells. Application of JH analog, methoprene, lowered or delayed the expression of all the genes studied. These data suggest that 20E plays a major role in midgut remodeling and coordinates this process through stage- and cell-specific expression of different isoforms of nuclear receptors and transcription factors in the target larval and imaginal cells.
journal_name
J Insect Physioljournal_title
Journal of insect physiologyauthors
Parthasarathy R,Palli SRdoi
10.1016/j.jinsphys.2006.09.009subject
Has Abstractpub_date
2007-03-01 00:00:00pages
216-29issue
3eissn
0022-1910issn
1879-1611pii
S0022-1910(06)00161-2journal_volume
53pub_type
杂志文章abstract::Females generally avoid selecting sites for oviposition which have a high predation risk to increase offspring survival. Previous studies have focused on costs to ovipositing females. However, although offspring may also incur costs by being oviposited at low predation risk sites, no studies have focused on costs to o...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2010.01.011
更新日期:2010-06-01 00:00:00
abstract::Disruption of the appropriate balance between juvenile hormone (JH) and ecdysteroids causes abnormal insect development. The application of a JH analog (JHA) during the early days of the final (fifth) instar induces dauer larvae with low ecdysteroid titers in insects, but the mechanism that underlies the action of JHA...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2015.03.012
更新日期:2015-09-01 00:00:00
abstract::A mechanistic understanding of the butterfly wing color-pattern determination can be facilitated by experimental pattern changes. Here I review physiologically induced color-pattern changes in nymphalid butterflies and their mechanistic and evolutionary implications. A type of color-pattern change can be elicited by e...
journal_title:Journal of insect physiology
pub_type: 杂志文章,评审
doi:10.1016/j.jinsphys.2008.05.006
更新日期:2008-07-01 00:00:00
abstract::At 25 degrees C and under a long-day photoperiod, all 5th instar Psacothea hilaris larvae pupate at the next molt. Under a short-day photoperiod, in contrast, they undergo one or two additional larval molts and enter diapause; the 7th instar larvae enter diapause without further molt. The changes in hemolymph juvenile...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2004.09.009
更新日期:2004-11-01 00:00:00
abstract::The pheromone-sensitive receptor cells of male moth antennae are capable of detecting the rapid changes in stimulus intensity encountered in natural pheromone odour plumes. We investigated temporal response characteristics of the two receptor cell types of the sensillum trichodeum of female Bombyx mori, which are most...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(02)00109-9
更新日期:2002-08-01 00:00:00
abstract::Enzyme-induced hemolysis has been shown to occur in the midgut of ticks; however, little is known about the molecular basis for hemolytic activity. We report here the molecular and reverse genetic characterization of a hemolytic midgut serine proteinase, HlSP, recently identified from the ixodid tick Haemaphysalis lon...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2006.12.001
更新日期:2007-02-01 00:00:00
abstract::Many plant-parasite interactions that include major plant resistance genes have subsequently been shown to exhibit features of gene-for-gene interactions between plant Resistance genes and parasite Avirulence genes. The brown planthopper (BPH) Nilaparvata lugens is an important pest of rice (Oryza sativa). Historicall...
journal_title:Journal of insect physiology
pub_type: 杂志文章,评审
doi:10.1016/j.jinsphys.2015.12.001
更新日期:2016-01-01 00:00:00
abstract::Animal-pollinated plants face a common problem, how their defensive anti-herbivore compounds may impair or alter pollinator behavior. Evolution has tailored multiple solutions, which largely involve pollinator tolerance or manipulation, to the benefit of the plant, not the removal of these compounds from pollen or nec...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2020.104177
更新日期:2021-01-01 00:00:00
abstract::When honey bees approach blossoms, they are attracted by the color and form of the goal in their visual field, and they use these cues for a successful revisit. Their visual system receives cues by two main types of parallel channels behind the retina; one channel for colors, and a monochrome channel for the orientati...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2012.04.009
更新日期:2012-07-01 00:00:00
abstract::Catabolism of excess dietary protein by Aedes aegypti was investigated during larval development, during and after metamorphosis. Activity profiles were established for xanthine dehydrogenase (XDH, uricotelic pathway) and arginase (ureotelic pathway). Both enzymes are active at all times during the life-cycle. During ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(00)00096-2
更新日期:2001-02-01 00:00:00
abstract::The effect of male accessory gland substances on female reproductive physiology has been previously described as "activating" egg development. However, no mechanism has been described that can explain how male mosquitoes are able to influence egg development in female mosquitoes. To investigate how male mosquitoes are...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2014.03.006
更新日期:2014-05-01 00:00:00
abstract::Both mating and reproduction strongly affect the physiology of insect females. In the ant Cardiocondyla obscurior, a comparison among virgin queens, mated queens, and queens mated with sterilized males ("sham-mated") allows to separate the different effects of mating and egg laying. Here, we investigate whether and ho...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2012.06.009
更新日期:2012-09-01 00:00:00
abstract::To counteract water loss due to excretion, cuticular transpiration and respiration, various groups of arthropods have developed mechanisms for active uptake of water vapor from unsaturated air. In this study, active uptake capabilities and water loss rates were examined in the various developmental stages of the cat f...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(03)00153-7
更新日期:2003-12-01 00:00:00
abstract::A two-step HPLC purification procedure resulted in a factor from the stable fly that depolarizes the lumen-negative transepithelial voltage (V(t)) of the adult stable fly Malpighian tubule. When applied to tubules of the female mosquito, Aedes aegypti, this factor partially mimics the electrophysiological actions of t...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(97)00078-4
更新日期:1997-10-01 00:00:00
abstract::Social environments can have a major impact on ageing profiles in many animals. However, such patterns in variation in ageing and their underlying mechanisms are not well understood, particularly because both social contact and isolation can be stressful. Here, we use Drosophila melanogaster fruitflies to examine sex-...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2017.08.008
更新日期:2017-10-01 00:00:00
abstract::Prey nutrient quality determines predator performance. Polyphagous predators can address nutritional challenges by targeting prey with specific nutrient composition, but prey-specialised predators (e.g., ant-eaters), must obtain all nutrients from limited array of prey. Analysis of published data on prey specificity o...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2014.01.008
更新日期:2014-03-01 00:00:00
abstract::Sperm cells are costly to produce; diet should therefore affect sperm number and/or viability. In non-social insects and vertebrates, there is compelling evidence that diet influences sperm production. Less is known about this relationship in eusocial hymenopterans (all ants and some bees and wasps), whose mating syst...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2017.05.012
更新日期:2017-07-01 00:00:00
abstract::Protapion trifolii and P. fulvipes (Coleoptera: Brentidae) are major pests in European clover seed production. Previous studies have reported a high host plant fidelity of these weevils for red and white clover species, respectively, driven by host plant olfactory cues. Given the specific host preferences observed in ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2019.103948
更新日期:2019-01-01 00:00:00
abstract::Studies were undertaken to investigate vitellogenesis and its regulation in female adults of the fall armyworm, Spodoptera frugiperda. A single female-specific protein, likely to be the S. frugiperda vitellogenin (Vg), appeared approximately 5 h after adult eclosion in the hemolymph of virgin females. The concentratio...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(99)00207-3
更新日期:2000-06-01 00:00:00
abstract::Mosquito eggs are laid in water but freshly laid eggs are susceptible to dehydration, if their surroundings dry out at the first hours of development. During embryogenesis of different mosquito vectors the serosal cuticle, an extracellular matrix, is produced; it wraps the whole embryo and becomes part of the eggshell...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2015.10.006
更新日期:2015-12-01 00:00:00
abstract::The ability of first instar nymphs and newly moulted pre-reproductive adults of the grain aphid S. avenae to rapidly cold harden was investigated. When nymphs reared at 20 degrees C were transferred directly to -8 degrees C for 3 h, there was 18% survival. This exposure was selected as the discriminating temperature. ...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2004.01.003
更新日期:2004-04-01 00:00:00
abstract::Most epithelia contain multiple cell types that interact to perform the roles required of the tissue. In insect epithelia, the apical plasma membrane V-ATPase dominates ion-transport models, and (as in vertebrates) is usually found in specialized intercalated cell types or regions. The Malpighian tubules of several in...
journal_title:Journal of insect physiology
pub_type: 杂志文章,评审
doi:10.1016/j.jinsphys.2011.12.003
更新日期:2012-04-01 00:00:00
abstract::Polydnaviruses are unique because of their obligatory association with thousands of parasitoid wasp species from the braconid and ichneumonid families of hymenopterans. PDVs are injected into the parasitized hosts and are essential for parasitism success. However, polydnaviruses are also unique because of their genome...
journal_title:Journal of insect physiology
pub_type: 杂志文章,评审
doi:10.1016/s0022-1910(03)00058-1
更新日期:2003-05-01 00:00:00
abstract::Fifth instar larvae and prepupae of Heliothis virescens (tobacco budworm) were injected with live Enterobacter cloacae and bled at different times after vaccination. Immune pupal hemolymph showed a 54 times increase in lysozyme activity when compared with normal larval hemolymph, and an 11 times increase of lysozyme a...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/s0022-1910(99)00142-0
更新日期:2000-04-01 00:00:00
abstract::Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is a worldwide emerging pest of soft fruits, but its cold tolerance has not been thoroughly explored. We determined the cold tolerance strategy, low temperature thermal limits, and plasticity of cold tolerance in both male and female adult D. suzukii. We reared f...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2015.05.003
更新日期:2015-08-01 00:00:00
abstract::Helicoverpa armigera (Lepidoptera, Noctuidae) is an important agricultural pest with a pupal diapause. Cytochrome c oxidase (COX) is a key speed-limited enzyme of oxidative phosphorylation in mitochondria for ATP production. A differentially expressed cDNA fragment encoding COX subunit 1 (cox1) was cloned by different...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2010.08.023
更新日期:2010-12-01 00:00:00
abstract::To determine whether ecdysteroids are associated with reproductive division of labor in Bombus terrestris, we measured their levels in hemolymph and ovaries of queens and workers. Queens heading colonies had large active ovaries with high ecdysteroid content, whereas virgin gynes and mated queens before and after diap...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2005.03.009
更新日期:2005-07-01 00:00:00
abstract::Pheromonal control by the honey bee queen is achieved through the use of secretions from diverse glandular sources, but the use of pheromones from a variety of glandular sources by reproductively dominant workers, has not previously been explored. Using the social parasite, Apis mellifera capensis clonal worker we stu...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2017.09.001
更新日期:2017-10-01 00:00:00
abstract::Next generation sequencing has revealed the widespread occurrence of persistent virus infections in insects but little is known regarding to what extent persistent infections can affect cellular physiology and how they might contribute to the development of disease. In contrast to the pathogenic infections occurring i...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2019.03.004
更新日期:2019-01-01 00:00:00
abstract::The mechanism controlling the body color of hatchlings was studied for the desert locust, Schistocerca gregaria. A pheromonal factor secreted by gregarious female adults into the foam plugs of egg pods has been suggested to cause darkening in their progeny. We re-examined the role of this maternal factor by washing or...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2006.07.004
更新日期:2006-10-01 00:00:00