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https://www.readbyqxmd.com/read/28748114/uric-acid-in-plants-and-microorganisms-biological-applications-and-genetics-a-review
#1
REVIEW
Rehab M Hafez, Tahany M Abdel-Rahman, Rasha M Naguib
Uric acid increased accumulation and/or reduced excretion in human bodies is closely related to pathogenesis of gout and hyperuricemia. It is highly affected by the high intake of food rich in purine. Uric acid is present in both higher plants and microorganisms with species dependent concentration. Urate-degrading enzymes are found both in plants and microorganisms but the mechanisms by which plant degrade uric acid was found to be different among them. Higher plants produce various metabolites which could inhibit xanthine oxidase and xanthine oxidoreductase, so prohibit the oxidation of hypoxanthine to xanthine then to uric acid in the purine metabolism...
September 2017: Journal of Advanced Research
https://www.readbyqxmd.com/read/28747922/identification-of-major-quantitative-trait-loci-for-seed-oil-content-in-soybeans-by-combining-linkage-and-genome-wide-association-mapping
#2
Yongce Cao, Shuguang Li, Zili Wang, Fangguo Chang, Jiejie Kong, Junyi Gai, Tuanjie Zhao
Soybean oil is the most widely produced vegetable oil in the world and its content in soybean seed is an important quality trait in breeding programs. More than 100 quantitative trait loci (QTLs) for soybean oil content have been identified. However, most of them are genotype specific and/or environment sensitive. Here, we used both a linkage and association mapping methodology to dissect the genetic basis of seed oil content of Chinese soybean cultivars in various environments in the Jiang-Huai River Valley...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28747921/unreduced-megagametophyte-production-in-lemon-occurs-via-three-meiotic-mechanisms-predominantly-second-division-restitution
#3
Houssem Rouiss, José Cuenca, Luis Navarro, Patrick Ollitrault, Pablo Aleza
Unreduced (2n) gametes have played a pivotal role in polyploid plant evolution and are useful for sexual polyploid breeding in various species, particularly for developing new seedless citrus varieties. The underlying mechanisms of 2n gamete formation were recently revealed for Citrus reticulata but remain poorly understood for other citrus species, including lemon (C. limon [L.] Burm. f.). Here, we investigated the frequency and causal meiotic mechanisms of 2n megagametophyte production in lemon. We genotyped 48progeny plants of two lemon genotypes, "Eureka Frost" and "Fino", using 16 Simple Sequence Repeat (SSR) and 18 Single Nucleotide Polymorphism (SNP) markers to determine the genetic origin of the progenies and the underlying mechanisms for 2n gamete formation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28747815/identification-of-very-small-open-reading-frames-in-the-genomes-of-holmes-jungle-virus-ord-river-virus-and-wongabel-virus-of-the-genus-hapavirus-family-rhabdoviridae
#4
REVIEW
Aneta Gubala, Susan Walsh, Jane McAllister, Richard Weir, Steven Davis, Lorna Melville, Ian Mitchell, Dieter Bulach, Penny Gauci, Alex Skvortsov, David Boyle
Viruses of the family Rhabdoviridae infect a broad range of hosts from a variety of ecological and geographical niches, including vertebrates, arthropods, and plants. The arthropod-transmitted members of this family display considerable genetic diversity and remarkable genomic flexibility that enable coding for various accessory proteins in different locations of the genome. Here, we describe the genome of Holmes Jungle virus, isolated from Culex annulirostris mosquitoes collected in northern Australia, and make detailed comparisons with the closely related Ord River and Wongabel viruses, with a focus on identifying very small open reading frames (smORFs) in their genomes...
2017: Evolutionary Bioinformatics Online
https://www.readbyqxmd.com/read/28747428/sequence-exchange-between-r-genes-converts-virus-resistance-into-nematode-resistance-and-vice-versa
#5
Erik J Slootweg, Kamila Koropacka, Jan Roosien, Robert Dees, Hein Overmars, Rene Klein Lankhorst, Casper van Schaik, Rikus Pomp, Liesbeth Bouwman, Johannes Helder, Arjen Schots, Jaap Bakker, Geert Smant, Aska Goverse
Plants have evolved a limited repertoire of NB-LRR disease resistance (R) genes to protect themselves against a myriad of pathogens. This limitation is thought to be counterbalanced by the rapid evolution of NB-LRR proteins, as only few sequence changes have been shown to be sufficient to alter resistance specificities towards novel strains of a pathogen. However, little is known about the flexibility of NB-LRR genes to switch resistance specificities between phylogenetically unrelated pathogens. To investigate this, we created domain swaps between the close homologs Gpa2 and Rx1, which confer resistance in potato to the cyst nematode Globodera pallida and Potato virus X (PVX), respectively...
July 26, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28747151/comparative-analysis-of-targeted-long-read-sequencing-approaches-for-characterization-of-a-plant-s-immune-receptor-repertoire
#6
Michael Giolai, Pirita Paajanen, Walter Verweij, Kamil Witek, Jonathan D G Jones, Matthew D Clark
BACKGROUND: The Oxford Nanopore Technologies MinION™ sequencer is a small, portable, low cost device that is accessible to labs of all sizes and attractive for in-the-field sequencing experiments. Selective breeding of crops has led to a reduction in genetic diversity, and wild relatives are a key source of new genetic resistance to pathogens, usually via NLR immune receptor-encoding genes. Recent studies have demonstrated how crop NLR repertoires can be targeted for sequencing on Illumina or PacBio (RenSeq) and the specific gene conveying pathogen resistance identified...
July 26, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28746763/reclaiming-hope-in-extinction-storytelling
#7
Patrice Kohl
Critics often take conservationists to task for delivering a constant barrage of bad news without offering a compelling vision of the future. Could recent advances in synthetic biology-an optimistic, forward-looking field with a can-do attitude-let conservationists develop a new vision and generate some better news? Synthetic biology and related gene-editing applications could be used to address threats to species. Genetic interventions might also be used in plants to better protect biodiversity in U.S. rangelands and forests...
July 2017: Hastings Center Report
https://www.readbyqxmd.com/read/28746379/confirmation-of-independent-introductions-of-an-exotic-plant-pathogen-of-cornus-species-discula-destructiva-on-the-east-and-west-coasts-of-north-america
#8
Kristie Mantooth, Denita Hadziabdic, Sarah Boggess, Mark Windham, Stephen Miller, Guohong Cai, Joseph Spatafora, Ning Zhang, Meg Staton, Bonnie Ownley, Robert Trigiano
Cornus florida (flowering dogwood) and C. nuttallii (Pacific dogwood) are North American native tree species that belong to the big-bracted group of dogwoods. Cornus species are highly valued for their ornamental characteristics, and have fruits that contain high fat content for animals. Also, they are an important understory tree in natural forests. Dogwood anthracnose, caused by Discula destructiva, was observed in the late 1970s on the east and west coasts of the United States and by 1991 had quickly spread throughout most of the native ranges of C...
2017: PloS One
https://www.readbyqxmd.com/read/28746364/construction-of-a-high-density-genetic-map-for-grape-using-specific-length-amplified-fragment-slaf-sequencing
#9
Jiahui Wang, Kai Su, Yinshan Guo, Huiyang Xing, Yuhui Zhao, Zhendong Liu, Kun Li, Xiuwu Guo
Genetic maps are important tools in plant genomics and breeding. We report a large-scale discovery of single nucleotide polymorphisms (SNPs) using the specific length amplified fragment sequencing (SLAF-seq) technique for the construction of high-density genetic maps for two elite wine grape cultivars, 'Chardonnay' and 'Beibinghong', and their 130 F1 plants. A total of 372.53 M paired-end reads were obtained after preprocessing. The average sequencing depth was 33.81 for 'Chardonnay' (the female parent), 48...
2017: PloS One
https://www.readbyqxmd.com/read/28745211/the-lipid-lowering-effects-and-associated-mechanisms-of-dietary-phytosterol-supplementation
#10
Jerad H Dumolt, Todd C Rideout
Phytosterols (PS) are plant-based structural analogous of mammalian cholesterol that have been shown to lower blood cholesterol concentrations by ~10%, although inter-individual response to PS supplementation due to subject-specific metabolic and genetic factors is evident. Recent work further suggests that PS may act as effective triglyceride (TG)-lowering agents with maximal TG reductions observed in hypertriglyceridemic subjects. Although PS have been demonstrated to interfere with cholesterol and perhaps TG absorption within the intestine, they also have the capacity to modulate the expression of lipid regulatory genes through liver X receptor (LXR) activation...
July 25, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28745103/computer-vision-for-high-throughput-quantitative-phenotyping-a-case-study-of-grapevine-downy-mildew-sporulation-and-leaf-trichomes
#11
Konstantin Divilov, Tyr Wiesner-Hanks, Paola Barba, Lance Cadle-Davidson, Bruce I Reisch
Quantitative phenotyping of downy mildew sporulation is frequently used in plant breeding and genetic studies, as well as in studies focused on pathogen biology, such as chemical efficacy trials. In these scenarios, phenotyping a large number of genotypes or treatments can be advantageous, but is often limited by time and cost. We present a novel computational pipeline dedicated to estimating the percent area of downy mildew sporulation from images of inoculated grapevine leaf discs in a manner that is time and cost efficient...
July 26, 2017: Phytopathology
https://www.readbyqxmd.com/read/28744785/the-distribution-of-miniature-impala-elements-and-six-genes-in-the-fusarium-genus-is-suggestive-of-horizontal-gene-transfer
#12
Peter van Dam, Martijn Rep
The mimp family of miniature inverted-repeat transposable elements was previously found only in genomes of Fusarium oxysporum and is contextually associated with virulence genes in this species. Through extensive comparative analysis of 83 F. oxysporum and 52 other Fusarium genomes, we uncovered the distribution of different mimp families throughout the genus. We show that (i) mimps are not exclusive to F. oxysporum; (ii) pathogenic isolates generally possess more mimps than non-pathogenic strains and (iii) two isolates of F...
July 25, 2017: Journal of Molecular Evolution
https://www.readbyqxmd.com/read/28742868/combining-ability-of-highland-tropic-adapted-potato-for-tuber-yield-and-yield-components-under-drought
#13
Betaw Hirut, Hussein Shimelis, Mengistu Fentahun, Merideth Bonierbale, Manuel Gastelo, Asrat Asfaw
Recurrent drought and late blight disease are the major factors limiting potato productivity in the northwest Ethiopian highlands. Incorporating drought tolerance and late blight resistance in the same genotypes will enable the development of cultivars with high and stable yield potential under erratic rainfall conditions. The objectives of this study were to assess combining ability effects and gene action for tuber yield and traits related to drought tolerance in the International Potato Centre's (CIP's) advanced clones from the late blight resistant breeding population B group 'B3C2' and to identify promising parents and families for cultivar development...
2017: PloS One
https://www.readbyqxmd.com/read/28742458/morphological-and-genetic-analyses-of-the-invasive-forest-pathogen-phytophthora-austrocedri-reveal-two-clonal-lineages-colonised-britain-and-argentina-from-a-common-ancestral-population
#14
Béatrice Henricot, Ana Pérez-Sierra, April Armstrong, Paul Sharp, Sarah Green
Phytophthora austrocedri is causing widespread mortality of Austrocedrus chilensis in Argentina and Juniperus communis in Britain. The pathogen has also been isolated from J. horizontalis in Germany. Isolates from Britain, Argentina and Germany are homothallic with no clear differences in the dimensions of sporangia, oogonia or oospores. Argentinian and German isolates grew faster than British isolates across a range of media and had a higher temperature tolerance although most isolates regardless of origin grew best at 15°C and all isolates were killed at 25°C...
July 25, 2017: Phytopathology
https://www.readbyqxmd.com/read/28742220/dissecting-functions-of-sepallata-like-mads-box-genes-in-patterning-of-the-pseudanthial-inflorescence-of-gerbera-hybrida
#15
Teng Zhang, Yafei Zhao, Inka Juntheikki, Katriina Mouhu, Suvi K Broholm, Anneke S Rijpkema, Lisa Kins, Tianying Lan, Victor A Albert, Teemu H Teeri, Paula Elomaa
The pseudanthial inflorescences of the sunflower family, Asteraceae, mimic a solitary flower but are composed of multiple flowers. Our studies in Gerbera hybrida indicate functional diversification for SEPALLATA (SEP)-like MADS box genes that often function redundantly in other core eudicots. We conducted phylogenetic and expression analysis for eight SEP-like GERBERA REGULATOR OF CAPITULUM DEVELOPMENT (GRCD) genes, including previously unstudied gene family members. Transgenic gerbera plants were used to infer gene functions...
July 25, 2017: New Phytologist
https://www.readbyqxmd.com/read/28741224/comparative-analysis-of-histone-modifications-and-dna-methylation-at-osbz8-locus-under-salinity-stress-in-ir64-and-nonabokra-rice-varieties
#16
Amit Paul, Pratiti Dasgupta, Dipan Roy, Shubho Chaudhuri
Rice being an important cereal crop is highly sensitive to salinity stress causing growth retardation and loss in productivity. However, certain rice genotypes like Nonabokra and Pokkali show a high level of tolerance towards salinity stress compared to IR64 variety. This differential response of tolerant varieties towards salinity stress may be a cumulative effect of genetic and epigenetic factors. In this study, we have compared the salinity-induced changes in chromatin modifications at the OsBZ8 locus in salt-tolerant Nonabokra and salt-sensitive IR64 rice varieties...
July 24, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28741131/meiotic-chromosome-behavior-of-the-male-fertile-allotriploid-lily-cultivar-cocossa
#17
Xiqing Zhang, Qinzheng Cao, Peng Zhou, Guixia Jia
Cytological observations of microsporogenesis in the allotriploid lily cultivar 'Cocossa' showed that viable pollen production could be attributed mainly to disoriented spindles, abnormal cytokinesis, and cytomixis during male meiosis. To identify the reasons why the allotriploid lily cultivar 'Cocossa' can produce aneuploid and euploid functional male gametes and can be used as the paternal parent in lily introgression breeding, we performed a detailed investigation of microsporogenesis using the conventional cytological methods...
July 24, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28739644/nrt1-5-npf7-3-functions-as-a-proton-coupled-h-k-antiporter-for-k-loading-into-the-xylem-in-arabidopsis
#18
Hong Li, Miao Yu, Xin-Qiao Du, Zhi-Fang Wang, Wei-Hua Wu, Francisco J Quintero, Xue-Hua Jin, Hao-Dong Li, Yi Wang
Potassium and nitrogen are essential macronutrients for plant growth and have a positive impact on crop yield. Previous studies have indicated that the absorption and translocation of K+ and NO3- are correlated with each other in plants; however, the molecular mechanism that coordinates K+ and NO3- transport remains unknown. In this study, using a forward genetic approach, we isolated a low-K+-sensitive Arabidopsis mutant lks2 that showed a leaf-chlorosis phenotype under low-K+ conditions. LKS2 encodes the transporter NRT1...
July 24, 2017: Plant Cell
https://www.readbyqxmd.com/read/28739549/mutations-in-the-abcg8-gene-are-associated-with-sitosterolaemia-in-the-homozygous-form-and-xanthelasmas-in-the-heterozygous-form
#19
Tara Bardawil, Abdallah Rebeiz, Myriam Chaabouni, Jessica El Halabi, Zakaria Kambris, Ossama Abbas, Ossama Abou Hassan, Lamiaa Hamie, Fadi Bitar, Abdul Ghani Kibbi, Georges Nemer, Mazen Kurban
Sitosterol is the most abundant plant sterol found in our diet. Sitosterolemia (OMIM 210250), also known as phytosterolaemia, is a rare autosomal recessive disease caused by the inability to efficiently excrete plant sterol, and is characterized by cutaneous xanthomas and accelerated atherosclerosis. Sitosterolaemia is caused by homozygous or compound heterozygous mutations in either ABCG5 or ABCG8 (both on chromosome 2p21), which encode the sterol efflux transporter ABCG5 (sterolin-1) and ABCG8 (sterolin-2), respectively...
July 25, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28738232/molecular-tools-and-emerging-strategies-for-deep-genetic-genomic-refactoring-of-pseudomonas
#20
REVIEW
Esteban Martínez-García, Víctor de Lorenzo
The interest of the genus Pseudomonas largely relies on the virulence of some of its species for plants and animals (including humans). Yet, pathogenic features of some isolates coexist with others often present in environmental variants that promote plant growth and degrade chemical pollutants. Many of these traits can be traced to the intrinsic properties of the genomic chassis of this genus along with distinct genetic parts and devices. With the tools of Synthetic Biology these can be enhanced and/or repurposed for the sake of biological control, environmental remediation and whole-cell biocatalysis...
July 21, 2017: Current Opinion in Biotechnology
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