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https://www.readbyqxmd.com/read/28446995/marginalized-mixture-models-for-count-data-from-multiple-source-populations
#1
Habtamu K Benecha, Brian Neelon, Kimon Divaris, John S Preisser
Mixture distributions provide flexibility in modeling data collected from populations having unexplained heterogeneity. While interpretations of regression parameters from traditional finite mixture models are specific to unobserved subpopulations or latent classes, investigators are often interested in making inferences about the marginal mean of a count variable in the overall population. Recently, marginal mean regression modeling procedures for zero-inflated count outcomes have been introduced within the framework of maximum likelihood estimation of zero-inflated Poisson and negative binomial regression models...
2017: Journal of Statistical Distributions and Applications
https://www.readbyqxmd.com/read/28443083/intracellular-localization-interactions-and-functions-of-capsicum-chlorosis-virus-proteins
#2
Shirani M K Widana Gamage, Ralf G Dietzgen
Tospoviruses are among the most devastating viruses of horticultural and field crops. Capsicum chlorosis virus (CaCV) has emerged as an important pathogen of capsicum and tomato in Australia and South-east Asia. Present knowledge about CaCV protein functions in host cells is lacking. We determined intracellular localization and interactions of CaCV proteins by live plant cell imaging to gain insight into the associations of viral proteins during infection. Proteins were transiently expressed as fusions to autofluorescent proteins in leaf epidermal cells of Nicotiana benthamiana and capsicum...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28436192/predictors-of-non-pharmacological-intervention-effect-on-cognitive-function-and-behavioral-and-psychological-symptoms-of-older-people-with-dementia
#3
Ting-Jung Hsu, Hui-Te Tsai, An-Chun Hwang, Liang-Yu Chen, Liang-Kung Chen
AIM: Our previous work showed that non-pharmacological interventions could effectively reduce the severity of behavioral and psychological symptoms of dementia (BPSD), while the factors influencing the effect of intervention were less explored. Therefore, the main purpose of the present study was to investigate the predictors of the non-pharmacological intervention effect for old veterans with dementia and BPSD. METHODS: A total of 141 old veterans with dementia living in two veterans' homes in northern Taiwan were recruited...
April 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28428851/screening-mitochondrial-dna-sequence-variation-as-an-alternative-method-for-tracking-established-and-outbreak-populations-of-queensland-fruit-fly-at-the-species-southern-range-limit
#4
Mark J Blacket, Mali B Malipatil, Linda Semeraro, Peter S Gillespie, Bernie C Dominiak
Understanding the relationship between incursions of insect pests and established populations is critical to implementing effective control. Studies of genetic variation can provide powerful tools to examine potential invasion pathways and longevity of individual pest outbreaks. The major fruit fly pest in eastern Australia, Queensland fruit fly Bactrocera tryoni (Froggatt), has been subject to significant long-term quarantine and population reduction control measures in the major horticulture production areas of southeastern Australia, at the species southern range limit...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28425557/dual-spectra-band-emissive-eu-2-mn-2-co-activated-alkaline-earth-phosphates-for-indoor-plant-growth-novel-phosphor-converted-leds
#5
Young Jun Yun, Jin Kyu Kim, Ji Young Ju, Seul Ki Choi, Woon Ik Park, Jae Yong Suh, Ha-Kyun Jung, Yongseon Kim, Sungho Choi
This paper reports designing a novel single composition blue/red color illuminating phosphor followed by fabricating "smart" agricultural/horticultural LED lighting. Color-tunable Eu(2+)/Mn(2+) co-activated alkaline earth phosphates, Na(Sr,Ba)PO4 and Ca3Mg3(PO4)4, are considered, and the stable doping sites for the corresponding activators are identified by using first-principle DFT calculations. We can realize the designated color purity with stable thermal quenching preserved luminescence behavior is induced by the Eu(2+) center positioned at different coordination states with intermixed Sr(2+)/Ba(2+) sites in Na(Sr,Ba)PO4 hosts...
April 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28423426/the-invasive-liriomyza-huidobrensis-diptera-agromyzidae-understanding-its-pest-status-and-management-globally
#6
Phyllis G Weintraub, Sonja J Scheffer, Diedrich Visser, Graciela Valladares, Alberto Soares Correa, B Merle Shepard, Aunu Rauf, Sean T Murphy, Norma Mujica, Charles MacVean, Jürgen Kroschel, Miriam Kishinevsky, Ravindra C Joshi, Nina S Johansen, Rebecca H Hallett, Hasan S Civelek, Bing Chen, Helga Blanco Metzler
Liriomyza huidobrensis (Blanchard) is native to South America but has expanded its range and invaded many regions of the world, primarily on flowers and to a lesser extent on horticultural product shipments. As a result of initial invasion into an area, damage caused is usually significant but not necessarily sustained. Currently, it is an economic pest in selected native and invaded regions of the world. Adults cause damage by puncturing abaxial and adaxial leaf surfaces for feeding and egg laying sites. Larvae mine the leaf parenchyma tissues which can lead to leaves drying and wilting...
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28421090/comparative-genomics-and-phylogenomics-of-east-asian-tulips-amana-liliaceae
#7
Pan Li, Rui-Sen Lu, Wu-Qin Xu, Tetsuo Ohi-Toma, Min-Qi Cai, Ying-Xiong Qiu, Kenneth M Cameron, Cheng-Xin Fu
The genus Amana Honda (Liliaceae), when it is treated as separate from Tulipa, comprises six perennial herbaceous species that are restricted to China, Japan and the Korean Peninsula. Although all six Amana species have important medicinal and horticultural uses, studies focused on species identification and molecular phylogenetics are few. Here we report the nucleotide sequences of six complete Amana chloroplast (cp) genomes. The cp genomes of Amana range from 150,613 bp to 151,136 bp in length, all including a pair of inverted repeats (25,629-25,859 bp) separated by the large single-copy (81,482-82,218 bp) and small single-copy (17,366-17,465 bp) regions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28420123/stability-of-bioactive-compounds-in-broccoli-as-affected-by-cutting-styles-and-storage-time
#8
Ana Mariel Torres-Contreras, Vimal Nair, Luis Cisneros-Zevallos, Daniel A Jacobo-Velázquez
Broccoli contains bioactive molecules and thus its consumption is related with the prevention of chronic and degenerative diseases. The application of wounding stress to horticultural crops is a common practice, since it is the basis for the fresh-cut produce industry. In this study, the effect of four different cutting styles (CSs) (florets (CS1), florets cut into two even pieces (CS2), florets cut into four even pieces (CS3), and florets processed into chops (CS4)) and storage time (0 and 24 h at 20 °C) on the content of bioactive compounds in broccoli was evaluated...
April 15, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28419355/vegetable-garden-as-therapeutic-horticulture-for-patients-with-chronic-pain
#9
John S Quick, Sarah B Robishaw, Kelly A Baylor, Dawn I Snyder, John J Han
No abstract text is available yet for this article.
April 17, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28402782/ecology-and-pathology-of-phytophthora-its-clade-3-species-in-forests-in-western-oregon-usa
#10
Everett M Hansen, Paul W Reeser, Wendy Sutton
Phytophthora species are widespread and diverse in forest ecosystems, but little is known about their ecology. We explore ecological attributes of the closely related clade 3 species that occur sympatrically in western North American forests. We address the population structure, pathology, and epidemiology of P. ilicis, P. nemorosa, P. pluvialis, P. pseudosyringae, and P. psychrophila. Phytophthora species were isolated from plant tissues, rainwater falling through the forest canopy, streams, and soils in forests in western Oregon...
2017: Mycologia
https://www.readbyqxmd.com/read/28399809/transcriptomic-profiling-of-two-pak-choi-varieties-with-contrasting-anthocyanin-contents-provides-an-insight-into-structural-and-regulatory-genes-in-anthocyanin-biosynthetic-pathway
#11
Lu Zhang, Bin Xu, Tao Wu, Yanfang Yang, Lianxue Fan, Muxuan Wen, Jiaxin Sui
BACKGROUND: The accumulation of anthocyanin in horticultural crops not only improves their stress tolerances but also their nutritional values. Many key regulatory and structural genes in anthocyanin biosynthesis have been identified in model plants, but limited information is available for non-model plant species featured with colored leaves. In this study, two Pak Choi varieties with green or purple leaves were selected to analyze the anthocyanin biosynthesis through RNA-Seq. RESULTS: A total of 2475 unigenes were differentially expressed between these tested varieties, including 1303 down-regulated and 1172 up-regulated genes in the purple-leafed one...
April 11, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28387789/evolution-of-wood-anatomical-characters-in-nepenthes-and-close-relatives-of-caryophyllales
#12
Rachel Schwallier, Barbara Gravendeel, Hugo de Boer, Stephan Nylinder, Bertie Joan van Heuven, Anton Sieder, Sukaibin Sumail, Rogier van Vugt, Frederic Lens
Background and Aims: Nepenthes attracts wide attention with its spectacularly shaped carnivorous pitchers, cultural value and horticultural curiosity. Despite the plant's iconic fascination, surprisingly little anatomical detail is known about the genus beyond its modified leaf tip traps. Here, the wood anatomical diversity of Nepenthes is explored. This diversity is further assessed with a phylogenetic framework to investigate whether the wood characters within the genus are relevant from an evolutionary or ecological perspective, or rather depend on differences in developmental stages, growth habits, substrates or precipitation...
April 6, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28376249/elevated-auxin-and-reduced-cytokinin-contents-in-rootstocks-improve-their-performance-and-grafting-success
#13
Wei Li, Chu Fang, Sanalkumar Krishnan, Junmei Chen, Hao Yu, Angus S Murphy, Emily Merewitz, Lorenzo Katin-Grazzini, Richard J McAvoy, Ziniu Deng, Janice Zale, Yi Li
Plant grafting is an important technique for horticultural and silvicultural production. However, many rootstock plants suffer from undesirable lateral bud outgrowth, low grafting success rates, or poor rooting. Here we used a root-predominant gene promoter (SbUGT) to drive the expression of a tryptophan-2-mono oxygenase gene (iaaM) from Agrobacterium tumafaciens to increase auxin levels in tobacco. The transgenic plants, when used as a rootstock, displayed inhibited lateral bud outgrowth, enhanced grafting success rate, and improved root initiation...
April 4, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28369532/three-ft-and-multiple-cen-and-bft-genes-regulate-maturity-flowering-and-vegetative-phenology-in-kiwifruit
#14
Charlotte Voogd, Lara A Brian, Tianchi Wang, Andrew C Allan, Erika Varkonyi-Gasic
Kiwifruit is a woody perennial horticultural crop, characterized by excessive vegetative vigor, prolonged juvenility, and low productivity. To understand the molecular factors controlling flowering and winter dormancy, here we identify and characterize the kiwifruit PEBP (phosphatidylethanolamine-binding protein) gene family. Five CEN-like and three BFT-like genes are differentially expressed and act as functionally conserved floral repressors, while two MFT-like genes have no impact on flowering time. FT-like genes are differentially expressed, with AcFT1 confined to shoot tip and AcFT2 to mature leaves...
March 27, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28364807/laboratory-selection-of-chlorpyrifos-resistance-in-an-invasive-pest-phenacoccus-solenopsis-homoptera-pseudococcidae-cross-resistance-stability-and-fitness-cost
#15
Masood Ejaz, Muhammad Babar Shahzad Afzal, Ghulam Shabbir, José Eduardo Serrão, Sarfraz Ali Shad, Wali Muhammad
The cotton mealybug, Phenacoccus solenopsis is an important polyphagous sucking pest of ornamentals, horticultural and fiber crops worldwide. Some P. solenopsis populations have developed insecticide resistance. This study evaluated cross-resistance, stability of insecticide resistance and life history traits affected by chlorpyrifos resistance in P. solenopsis. After nine generations selected with chlorpyrifos, P. solenopsis exhibited a 539.76-fold resistance level compared to an unselected population (UNSEL Pop)...
April 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28363811/australian-consumers-insights-into-potatoes-nutritional-knowledge-perceptions-and-beliefs
#16
Katie Wood, John Carragher, Robbie Davis
BACKGROUND: There has been a decline in the consumption of potatoes in developed countries worldwide due to many factors including the introduction of new foods and meal trends. In turn, this shift in eating patterns has dramatically affected the Australian potato industry which represents the largest horticulture contributor to gross food revenue. Many factors may influence consumers' food preferences, including the individual's nutrition knowledge, lifestyle factors, personal preferences, attitudes and beliefs...
March 28, 2017: Appetite
https://www.readbyqxmd.com/read/28360425/rapid-breeding-of-parthenocarpic-tomato-plants-using-crispr-cas9
#17
Risa Ueta, Chihiro Abe, Takahito Watanabe, Shigeo S Sugano, Ryosuke Ishihara, Hiroshi Ezura, Yuriko Osakabe, Keishi Osakabe
Parthenocarpy in horticultural crop plants is an important trait with agricultural value for various industrial purposes as well as direct eating quality. Here, we demonstrate a breeding strategy to generate parthenocarpic tomato plants using the CRISPR/Cas9 system. We optimized the CRISPR/Cas9 system to introduce somatic mutations effectively into SlIAA9-a key gene controlling parthenocarpy-with mutation rates of up to 100% in the T0 generation. Furthermore, analysis of off-target mutations using deep sequencing indicated that our customized gRNAs induced no additional mutations in the host genome...
March 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28350004/mitochondrial-dna-and-trade-data-support-multiple-origins-of-helicoverpa-armigera-lepidoptera-noctuidae-in-brazil
#18
Wee Tek Tay, Thomas K Walsh, Sharon Downes, Craig Anderson, Lars S Jermiin, Thomas K F Wong, Melissa C Piper, Ester Silva Chang, Isabella Barony Macedo, Cecilia Czepak, Gajanan T Behere, Pierre Silvie, Miguel F Soria, Marie Frayssinet, Karl H J Gordon
The Old World bollworm Helicoverpa armigera is now established in Brazil but efforts to identify incursion origin(s) and pathway(s) have met with limited success due to the patchiness of available data. Using international agricultural/horticultural commodity trade data and mitochondrial DNA (mtDNA) cytochrome oxidase I (COI) and cytochrome b (Cyt b) gene markers, we inferred the origins and incursion pathways into Brazil. We detected 20 mtDNA haplotypes from six Brazilian states, eight of which were new to our 97 global COI-Cyt b haplotype database...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28346355/characterization-of-active-anthocyanin-degradation-in-the-petals-of-rosa-chinensis-and-brunfelsia-calycina-reveals-the-effect-of-gallated-catechins-on-pigment-maintenance
#19
Honghui Luo, Shuangfan Deng, Wei Fu, Xin Zhang, Xuelian Zhang, Zhaoqi Zhang, Xuequn Pang
Anthocyanin degradation decreases ornamental or nutritional values of horticultural products. To investigate factors that may influence colour change in flower development, anthocyanin degradation was compared between the flowers of Brunfelsia calycina and Rosa chinensis, which show rapid and slow degradation, respectively. In-gel activity assays, high performance liquid chromatography (HPLC) analysis of tannins, enzyme kinetics measurement and immune-detection of anthocyanin degradation related-perioxidases (PODs) were carried out for the comparison...
March 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28345788/horticultural-activity-predicts-later-localized-limb-status-in-a-contemporary-pre-industrial-population
#20
Jonathan Stieglitz, Benjamin C Trumble, Hillard Kaplan, Michael Gurven
OBJECTIVES: Modern humans may have gracile skeletons due to low physical activity levels and mechanical loading. Tests using pre-historic skeletons are limited by the inability to assess behavior directly, while modern industrialized societies possess few socio-ecological features typical of human evolutionary history. Among Tsimane forager-horticulturalists, we test whether greater activity levels and, thus, increased loading earlier in life are associated with greater later-life bone status and diminished age-related bone loss...
March 27, 2017: American Journal of Physical Anthropology
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