keyword
MENU ▼
Read by QxMD icon Read
search

hybrid sterility

keyword
https://www.readbyqxmd.com/read/29223227/cataract-surgery-and-environmental-sustainability-waste-and-lifecycle-assessment-of-phacoemulsification-at-a-private-healthcare-facility
#1
Cassandra L Thiel, Emily Schehlein, Thulasiraj Ravilla, R D Ravindran, Alan L Robin, Osamah J Saeedi, Joel S Schuman, Rengaraj Venkatesh
PURPOSE: To measure the waste generation and lifecycle environmental emissions from cataract surgery via phacoemulsification in a recognized resource-efficient setting. SETTING: Two tertiary care centers of the Aravind Eye Care System in southern India. DESIGN: Observational case series. METHODS: Manual waste audits, purchasing data, and interviews with Aravind staff were used in a hybrid environmental lifecycle assessment framework to quantify the environmental emissions associated with cataract surgery...
November 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29221447/disruption-of-postnatal-folliculogenesis-and-development-of-ovarian-tumor-in-a-mouse-model-with-aberrant-transforming-growth-factor-beta-signaling
#2
Yang Gao, Xin Fang, David F Vincent, David W Threadgill, Laurent Bartholin, Qinglei Li
BACKGROUND: Transforming growth factor beta (TGFB) superfamily signaling is implicated in the development of sex cord-stromal tumors, a category of poorly defined gonadal tumors. The aim of this study was to determine potential effects of dysregulated TGFB signaling in the ovary using Cre recombinase driven by growth differentiation factor 9 (Gdf9) promoter known to be expressed in oocytes. METHODS: A mouse model containing constitutively active TGFBR1 (TGFBR1CA) using Gdf9-iCre (termed TGFBR1-CAG9Cre) was generated...
December 8, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29206320/a-farnesyl-pyrophosphate-synthase-gene-expressed-in-pollen-functions-in-s-rnase-independent-unilateral-incompatibility
#3
Xiaoqiong Qin, Wentao Li, Yang Liu, Meilian Tan, Martin Ganal, Roger T Chetelat
Multiple independent and overlapping pollen rejection pathways contribute to unilateral interspecific incompatibility (UI). In crosses between tomato species, interspecific pollen rejection usually occurs when the female parent is self-incompatible and the male parent self-compatible (the 'SI x SC rule'). Additional, as yet unknown UI mechanisms are independent of self-incompatibility and contribute to UI between SC species or populations. We identified a major QTL on chromosome 10 (ui10.1) which affects pollen-side UI responses in crosses between cultivated tomato, Solanum lycopersicum, and S...
December 5, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29198847/first-delivery-in-a-leukemia-survivor-after-transplantation-of-cryopreserved-ovarian-tissue-evaluated-for-leukemia-cells-contamination
#4
Moran Shapira, Hila Raanani, Iris Barshack, Ninette Amariglio, Sanaz Derech-Haim, Meital Nagar Marciano, Eyal Schiff, Raoul Orvieto, Dror Meirow
OBJECTIVE: To describe a successful autologous ovarian tissue re-transplantation in a sterile leukemia survivor after evaluation for minimal residual disease and provide a review of the current literature. DESIGN: Presentation of a carefully designed workup taken to evaluate tissue for minimal residual disease, its limitations, and applicability to other patients. To date, there have not been any publications of auto-transplantations in leukemia survivors, owing to an estimated high risk for malignancy induction...
November 29, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/29197985/pervasive-interactions-of-sa-and-sb-loci-cause-high-pollen-sterility-and-abrupt-changes-in-gene-expression-during-meiosis-that-could-be-overcome-by-double-neutral-genes-in-autotetraploid-rice
#5
Jinwen Wu, Lin Chen, Muhammad Qasim Shahid, Minyi Chen, Qinglei Dong, Jirui Li, Xiaosong Xu, Xiangdong Liu
BACKGROUND: Intersubspecific autotetraploid rice hybrids possess high hybrid vigor; however, low pollen fertility is a critical hindrance in its commercial utilization. Our previous study demonstrated that polyploidy could increase the multi-loci interaction and cause high pollen abortion in autotetraploid rice hybrids. However, there is little known about the critical role of pollen sterility locus or loci in the intersubspecific hybrids. We developed autotetraploid rice hybrids harboring heterozygous genotypes (S i S i S j S j ) at different pollen sterility loci by using the near isogenic lines of Taichung65-4×...
December 2, 2017: Rice
https://www.readbyqxmd.com/read/29191005/construction-of-high-drug-loading-and-enzymatic-degradable-multilayer-films-for-self-defense-drug-release-and-long-term-biofilm-inhibition
#6
Bailiang Wang, Huihua Liu, Lin Sun, Yingying Jin, Xiaoxu Ding, Lingli Li, Jian Ji, Hao Chen
Bacterial infections and biofilm formation on the surface of implants is an important issue which greatly affect biomedical applications and even cause device failure. Construction of high drug loading systems on the surface and control the drug release on-demand is an efficient way to lower the development of resistant bacteria and biofilm formation. In the present study, (montmorillonite/hyaluronic acid-gentamicin)10 ((MMT/HA-GS)10) organic/inorganic hybrid multilayer films were alternately self-assembled on substrates...
November 30, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/29186399/construction-of-prdm9-allele-specific-recombination-maps-in-cattle-using-large-scale-pedigree-analysis-and-genome-wide-single-sperm-genomics
#7
Yang Zhou, Botong Shen, Jicai Jiang, Abinash Padhi, Ki-Eun Park, Adam Oswalt, Charles G Sattler, Bhanu P Telugu, Hong Chen, John B Cole, George E Liu, Li Ma
PRDM9 contributes to hybrid sterility and species evolution. However, its role is to be confirmed in cattle, a major domesticated livestock species. We previously found an association near PRDM9 with cattle recombination features, but the causative variants are still unknown. Using millions of genotyped cattle with pedigree information, we characterized five PRDM9 alleles and generated allele-specific recombination maps. By examining allele-specific recombination patterns, we observed the impact of PRDM9 on global distribution of recombination, especially in the two ends of chromosomes...
November 27, 2017: DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes
https://www.readbyqxmd.com/read/29177892/exploring-the-genetics-of-fertility-restoration-controlled-by-rf1-in-common-wheat-triticum-aestivum-l-using-high-density-linkage-maps
#8
Manuel Geyer, Theresa Albrecht, Lorenz Hartl, Volker Mohler
Hybrid wheat breeding has the potential to significantly increase wheat productivity compared to line breeding. The induction of male sterility by the cytoplasm of Triticum timopheevii Zhuk. is a widely discussed approach to ensure cross-pollination between parental inbred lines in hybrid wheat seed production. As fertility restoration in hybrids with this cytoplasm is often incomplete, understanding the underlying genetics is a prerequisite to apply this technology. A promising component for fertility restoration is the restorer locus Rf1, which was first detected on chromosome 1A of the restorer accession R3...
November 24, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/29161206/a-hypersensitivity-like-response-to-meloidogyne-graminicola-in-rice-oryza-sativa-l
#9
Ngan Thi Phan, Dirk De Waele, Mathias Lorieux, Lizhong Xiong, Stephane Bellafiore
Meloidogyne graminicola (M. graminicola) is a major plant-parasitic nematode affecting rice cultivation in Asia. Resistance to this nematode was found in the African rice genotypes Oryza glaberrima and O. longistaminata, however, due to interspecific hybrid sterility, the introgression of resistance genes in the widely consumed O. sativa varieties remains challenging. Recently, resistance was found in O. sativa and here we report for the first time the histological and genetic characterization of the resistance to M...
November 21, 2017: Phytopathology
https://www.readbyqxmd.com/read/29158637/marker-assisted-identification-of-restorer-gene-s-in-iso-cytoplasmic-restorer-lines-of-wa-cytoplasm-in-rice-and-assessment-of-their-fertility-restoration-potential-across-environments
#10
Amit Kumar, Prolay Kumar Bhowmick, Vikram Jeet Singh, Manoj Malik, Ashish Kumar Gupta, R Seth, M Nagarajan, S Gopala Krishnan, Ashok Kumar Singh
Iso-cytoplasmic restorers possess the same male sterile cytoplasm as the cytoplasmic male sterile (CMS) lines, thereby minimizing the potential cyto-nuclear conflict in the hybrids. Restoration of fertility of the wild abortive CMS is governed by two major genes namely, Rf3 and Rf4. Therefore, assessing the allelic status of these restorer genes in the iso-cytoplasmic restorers using molecular markers will not only help in estimating the efficiency of these genes either alone or in combination, in fertility restoration in the hybrids in different environments, but will also be useful in determining the efficacy of these markers...
October 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/29152691/strategies-for-the-control-of-rhipicephalus-microplus-ticks-in-a-world-of-conventional-acaricide-and-macrocyclic-lactone-resistance
#11
REVIEW
Roger I Rodriguez-Vivas, Nicholas N Jonsson, Chandra Bhushan
Infestations with the cattle tick, Rhipicephalus microplus, constitute the most important ectoparasite problem for cattle production in tropical and subtropical regions worldwide, resulting in major economic losses. The control of R. microplus is mostly based on the use of conventional acaricides and macrocyclic lactones. However, the intensive use of such compounds has resulted in tick populations that exhibit resistance to all major acaricide chemical classes. Consequently, there is a need for the development of alternative approaches, possibly including the use of animal husbandry practices, synergized pesticides, rotation of acaricides, pesticide mixture formulations, manual removal of ticks, selection for host resistance, nutritional management, release of sterile male hybrids, environmental management, plant species that are unfavourable to ticks, pasture management, plant extracts, essential oils and vaccination...
November 20, 2017: Parasitology Research
https://www.readbyqxmd.com/read/29150608/rapid-neo-sex-chromosome-evolution-and-incipient-speciation-in-a-major-forest-pest
#12
Ryan R Bracewell, Barbara J Bentz, Brian T Sullivan, Jeffrey M Good
Genome evolution is predicted to be rapid following the establishment of new (neo) sex chromosomes, but it is not known if neo-sex chromosome evolution plays an important role in speciation. Here we combine extensive crossing experiments with population and functional genomic data to examine neo-XY chromosome evolution and incipient speciation in the mountain pine beetle. We find a broad continuum of intrinsic incompatibilities in hybrid males that increase in strength with geographic distance between reproductively isolated populations...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29134711/x-exceptionalism-in-caenorhabditis-speciation
#13
Asher D Cutter
Speciation genetics research in diverse organisms shows the X-chromosome to be exceptional in how it contributes to 'rules' of speciation. Until recently, however, the nematode phylum has been nearly silent on this issue, despite the model organism Caenorhabditis elegans having touched most other topics in biology. Studies of speciation with Caenorhabditis accelerated with the recent discovery of species pairs showing partial inter-fertility. The resulting genetic analyses of reproductive isolation in nematodes demonstrate key roles for the X-chromosome in hybrid male sterility and inviability, opening up new understanding of the genetic causes of Haldane's rule, Darwin's corollary to Haldane's rule, and enabling tests of the large-X effect hypothesis...
November 13, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/29126789/molecular-control-of-male-fertility-for-crop-hybrid-breeding
#14
REVIEW
Yu-Jin Kim, Dabing Zhang
In many plant species, male-sterile female lines with cytoplasmic male sterility (CMS) or nuclear-controlled environment-sensitive genic male sterility (EGMS) have long been used to efficiently produce hybrids that harness hybrid vigor or heterosis. However, the underlying molecular mechanisms for these applications have only recently been uncovered in a few species. We provide here an update on the understanding of cytoplasmic-nuclear communication based on the discovery of mitochondrial CMS genes and their corresponding nuclear fertility determinants...
November 7, 2017: Trends in Plant Science
https://www.readbyqxmd.com/read/29119387/a-new-etv6-ntrk3-cell-line-model-reveals-malat1-as-a-novel-therapeutic-target-a-short-report
#15
Suning Chen, Stefan Nagel, Bjoern Schneider, Haiping Dai, Robert Geffers, Maren Kaufmann, Corinna Meyer, Claudia Pommerenke, Kenneth S Thress, Jiao Li, Hilmar Quentmeier, Hans G Drexler, Roderick A F MacLeod
BACKGROUND: Previously, the chromosomal translocation t(12;15)(p13;q25) has been found to recurrently occur in both solid tumors and leukemias. This translocation leads to ETV6-NTRK3 (EN) gene fusions resulting in ectopic expression of the NTRK3 neurotropic tyrosine receptor kinase moiety as well as oligomerization through the donated ETV6-sterile alpha motif domain. As yet, no in vitro cell line model carrying this anomaly is available. Here we genetically characterized the acute promyelocytic leukemia (APL) cell line AP-1060 and, by doing so, revealed the presence of a t(12;15)(p13;q25)...
November 8, 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/29116179/breeding-and-study-of-two-new-photoperiod-and-thermo-sensitive-genic-male-sterile-lines-of-polyploid-rice-oryza-sativa-l
#16
Xianhua Zhang, Bo Zuo, Zhaojian Song, Wei Wang, Yuchi He, Yuhua Liu, Detian Cai
Male sterile lines play an important role in the utilization of heterosis. To explore and exploit the heterosis of polyploid hybrid rice, two photoperiod- and thermo-sensitive genic male sterile lines of polyploid rice, PS006 and PS012, were bred via chromosome doubling, complex hybridization and self-breeding. The characteristics of these two lines, including the agronomic traits, growth, development, fertility transformation and combining ability, were investigated. Both lines had good agronomic characteristics and flowering habits, a high outcrossing rate, obvious fertility alterations and good combining abilities...
November 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29109252/poaceae-specific-ms1-encodes-a-phospholipid-binding-protein-for-male-fertility-in-bread-wheat
#17
Zheng Wang, Jian Li, Shaoxia Chen, Yanfang Heng, Zhuo Chen, Jing Yang, Kuanji Zhou, Jiawei Pei, Hang He, Xing Wang Deng, Ligeng Ma
Male sterility is an essential trait in hybrid seed production for monoclinous crops, including rice and wheat. However, compared with the high percentage of hybrid rice planted in the world, little commercial hybrid wheat is planted globally as a result of the lack of a suitable system for male sterility. Therefore, understanding the molecular nature of male fertility in wheat is critical for commercially viable hybrid wheat. Here, we report the cloning and characterization of Male Sterility 1 (Ms1) in bread wheat by using a combination of advanced genomic approaches...
November 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29109225/the-consequences-of-sequence-erosion-in-the-evolution-of-recombination-hotspots
#18
REVIEW
Irene Tiemann-Boege, Theresa Schwarz, Yasmin Striedner, Angelika Heissl
Meiosis is initiated by a double-strand break (DSB) introduced in the DNA by a highly controlled process that is repaired by recombination. In many organisms, recombination occurs at specific and narrow regions of the genome, known as recombination hotspots, which overlap with regions enriched for DSBs. In recent years, it has been demonstrated that conversions and mutations resulting from the repair of DSBs lead to a rapid sequence evolution at recombination hotspots eroding target sites for DSBs. We still do not fully understand the effect of this erosion in the recombination activity, but evidence has shown that the binding of trans-acting factors like PRDM9 is affected...
December 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29101419/fully-disposable-manufacturing-concepts-for-clinical-and-commercial-manufacturing-and-ballroom-concepts
#19
Berthold Boedeker, Adam Goldstein, Ekta Mahajan
The availability and use of pre-sterilized disposables has greatly changed the methods used in biopharmaceuticals development and production, particularly from mammalian cell culture. Nowadays, almost all process steps from cell expansion, fermentation, cell removal, and purification to formulation and storage of drug substances can be carried out in disposables, although there are still limitations with single-use technologies, particularly in the areas of pretesting and quality control of disposables, bag and connections standardization and qualification, extractables and leachables (E/L) validation, and dependency on individual vendors...
November 4, 2017: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/29101356/genomic-structural-variation-mediated-allelic-suppression-causes-hybrid-male-sterility-in-rice
#20
Rongxin Shen, Lan Wang, Xupeng Liu, Jiang Wu, Weiwei Jin, Xiucai Zhao, Xianrong Xie, Qinlong Zhu, Huiwu Tang, Qing Li, Letian Chen, Yao-Guang Liu
Hybrids between divergent populations commonly show hybrid sterility; this reproductive barrier hinders hybrid breeding of the japonica and indica rice (Oryza sativa L.) subspecies. Here we show that structural changes and copy number variation at the Sc locus confer japonica-indica hybrid male sterility. The japonica allele, Sc-j, contains a pollen-essential gene encoding a DUF1618-domain protein; the indica allele, Sc-i, contains two or three tandem-duplicated ~ 28-kb segments, each carrying an Sc-j-homolog with a distinct promoter...
November 3, 2017: Nature Communications
keyword
keyword
48218
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"