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https://www.readbyqxmd.com/read/28743038/physiological-vascular-and-nanomechanical-assessment-of-hybrid-poplar-leaf-traits-in-micropropagated-plants-and-plants-propagated-from-root-cuttings-a-contribution-to-breeding-programs
#1
Jaroslav Ďurkovič, Hana Husárová, Lucia Javoříková, Ingrid Čaňová, Miriama Šuleková, Monika Kardošová, Ivan Lukáčik, Miroslava Mamoňová, Rastislav Lagaňa
Micropropagated plants experience significant stress from rapid water loss when they are transferred from an in vitro culture to either greenhouse or field conditions. This is caused both by inefficient stomatal control of transpiration and the change to a higher light intensity and lower humidity. Understanding the physiological, vascular and biomechanical processes that allow micropropagated plants to modify their phenotype in response to environmental conditions can help to improve both field performance and plant survival...
July 13, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28742088/genome-wide-identification-of-hami-melon-mirnas-with-putative-roles-during-fruit-development
#2
Hong Zhang, Lan Yin, Huaisong Wang, Guangzhi Wang, Xinli Ma, Meihua Li, Haibo Wu, Qiushi Fu, Yi Zhang, Hongping Yi
MicroRNAs represent a family of small endogenous, non-coding RNAs that play critical regulatory roles in plant growth, development, and environmental stress responses. Hami melon is famous for its attractive flavor and excellent nutritional value, however, the mechanisms underlying the fruit development and ripening remains largely unknown. Here, we performed small RNA sequencing to investigate the roles of miRNAs during Hami melon fruit development. Two batches of flesh samples were collected at four fruit development stages...
2017: PloS One
https://www.readbyqxmd.com/read/28741678/recent-advances-of-microbial-breeding-via-heavy-ion-mutagenesis-at-imp
#3
REVIEW
Wei Hu, Wenjian Li, Jihong Chen
Nowadays, the value of heavy ion mutagenesis has been accepted as a novel powerful mutagen technique to generate new microbial mutants due to its high linear energy transfer (LET) and high relative biological effectiveness (RBE). This paper briefly reviews recent progress in developing a more efficient mutagenesis technique for microbial breeding using heavy-ion mutagenesis, and also presents the outline of the beam line for microbial breeding in Heavy Ion Research Facility of Lanzhou (HIRFL). Then, new insights into microbial biotechnology via heavy-ion mutagenesis are also further explored...
July 25, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28737288/linkage-disequilibrium-among-commonly-genotyped-snp-variants-detected-from-bull-sequence
#4
W M Snelling, L A Kuehn, B N Keel, R M Thallman, G L Bennett
Genomic prediction utilizing causal variants could increase selection accuracy above that achieved with SNPs genotyped by currently available arrays used for genomic selection. A number of variants detected from sequencing influential sires are likely to be causal, but noticeable improvements in prediction accuracy using imputed sequence variant genotypes have not been reported. Improvement in accuracy of predicted breeding values may be limited by the accuracy of imputed sequence variants. Using genotypes of SNPs on a high-density array and non-synonymous SNPs detected in sequence from influential sires of a multibreed population, results of this examination suggest that linkage disequilibrium between non-synonymous and array SNPs may be insufficient for accurate imputation from the array to sequence...
July 24, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28734021/effect-of-fixed-value-positive-end-expiratory-pressure-valves-on-canine-thoracic-volume-and-atelectasis
#5
A Allison, X Huizing, C Jolliffe, I Schaafsma
OBJECTIVES: The objective of this study was to investigate whether a fixed 10 cm H2 O positive end-expiratory pressure valve would increase the aeration of, and reduce atelectasis formation in, the lungs after induction of anaesthesia in dogs undergoing thoracic CT. MATERIALS AND METHODS: 28 dogs were paired based on breed, bodyweight and body condition score and then randomly allocated to either Group Z (0 cm H2 O) or Group P (10 cm H2 O positive end-expiratory pressure valve) immediately after the induction of anaesthesia...
July 22, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28729959/shot-gun-proteome-and-transcriptome-mapping-of-the-jujube-floral-organ-and-identification-of-a-pollen-specific-s-locus-f-box-gene
#6
Ruihong Chen, Guoliang Chen, Jian Huang
The flower is a plant reproductive organ that forms part of the fruit produced as the flowering season ends. While the number and identity of proteins expressed in a jujube (Ziziphus jujuba Mill.) flower is currently unknown, integrative proteomic and transcriptomic analyses provide a systematic strategy of characterizing the floral biology of plants. We conducted a shotgun proteomic analysis on jujube flowers by using a filter-aided sample preparation tryptic digestion, followed by liquid chromatography-tandem mass spectrometry (LC-MS/MS)...
2017: PeerJ
https://www.readbyqxmd.com/read/28729554/comparison-of-traditional-and-new-generation-dna-markers-declares-high-genetic-diversity-and-differentiated-population-structure-of-wild-almond-species
#7
Karim Sorkheh, Mehrana Koohi Dehkordi, Sezai Ercisli, Attila Hegedus, Júlia Halász
Wild almond species as sources of genetic variation may have crucial importance in breeding. A total of 389 accessions of 18 species have been analysed using inter-retrotransposon amplified polymorphism (IRAP), retrotransposon-microsatellite amplified polymorphism (REMAP), sequence-specific amplification polymorphism (S-SAP), amplified fragment length polymorphism (AFLP), inter simple sequence repeat (ISSR) and simple sequence repeats (SSR). Retrotransposon markers indicated the presence and movement of some Ty3-gypsy and Ty1-copia-elements in almond genome...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28728597/interaction-of-direct-and-social-genetic-effects-with-feeding-regime-in-growing-rabbits
#8
Miriam Piles, Ingrid David, Josep Ramon, Laurianne Canario, Oriol Rafel, Mariam Pascual, Mohamed Ragab, Juan P Sánchez
BACKGROUND: Most rabbit production farms apply feed restriction at fattening because of its protective effect against digestive diseases that affect growing rabbits. However, it leads to competitive behaviour between cage mates, which is not observed when animals are fed ad libitum. Our aim was to estimate the contribution of direct ([Formula: see text]) and social ([Formula: see text]) genetic effects (also known as indirect genetic effects) to total heritable variance of average daily gain ([Formula: see text]) in rabbits on different feeding regimens (FR), and the magnitude of the interaction between genotype and FR (G × FR)...
July 20, 2017: Genetics, Selection, Evolution: GSE
https://www.readbyqxmd.com/read/28728368/assessment-of-frozen-storage-duration-effect-on-quality-characteristics-of-various-horsemeat-muscles
#9
Pil Nam Seong, Hyun Woo Seo, Jin Hyoung Kim, Soo Hyun Cho, Yoon Seok Kim, Beom Young Park, Hoa Van Ba
Objective: The study aimed at assessing the effects of frozen storage duration on quality characteristics, lipid oxidation and sensory quality of various horse muscles. Methods: Five representative muscles: longissimus dorsi (LD), gluteus medius (GM), semimembranosus (SM), biceps femoris (BF) and triceps brachii (TB) at 24 h post-mortem obtained from 28-mo-old Jeju female breed horses (n=8) were used in the present investigation. The muscles were vacuum-packaged and frozen at -20oC for 120, 240 and 360 days...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728355/identification-of-genes-related-to-intramuscular-fat-content-of-pig-using-genome-wide-association-study
#10
Sohyoung Won, Jaehoon Jung, Eungwoo Park, H B Kim
Objective: The aim of this study is to identify SNPs and genes related to pig IMF and estimate the heritability of IMF. Methods: Genome-wide association study (GWAS) on 704 inbred Berkshires was performed for intramuscular fat content (IMF). To consider the inbreeding among samples, associations of the SNPs with IMF were tested as random effects in a mixed linear model using the genetic relationship matrix by GEMMA. Significant genes were compared with reported pig IMF QTL regions and functional classification of the identified genes were also performed...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28727120/economic-selection-indexes-for-hereford-and-braford-cattle-raised-in-southern-brazil
#11
R F Costa, B B M Teixeira, M J Yokoo, F F Cardoso
Economic selection indexes (EI) are considered the best way to select the most profitable animals for specific production systems. Nevertheless, in Brazil, few genetic evaluation programs deliver such indexes to their breeders. The aims of this study were to determine the breeding goals (BG) and economic values (EV, in US$) for typical beef cattle production systems in southern Brazil, to propose EI aimed to maximize profitability, and to compare the proposed EI with the currently used empirical index. Bioeconomic models were developed to characterize 3 typical production systems, identifying traits of economic impact and their respective EV...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727109/national-beef-quality-audit-2016-in-plant-survey-of-carcass-characteristics-related-to-quality-quantity-and-value-of-fed-steers-and-heifers
#12
C A Boykin, L C Eastwood, M K Harris, D S Hale, C R Kerth, D B Griffin, A N Arnold, J D Hasty, K E Belk, D R Woerner, R J Delmore, J N Martin, D L VanOverbeke, G G Mafi, M M Pfeiffer, T E Lawrence, T J McEvers, T B Schmidt, R J Maddock, D D Johnson, C C Carr, J M Scheffler, T D Pringle, A M Stelzleni, J Gottlieb, J W Savell
The National Beef Quality Audit (NBQA)-2016 used in-plant cooler assessments to benchmark the current status of the fed steer and heifer beef industry in the United States. In-plant cooler assessments ( = 9,106 carcasses) were conducted at 30 facilities, where approximately 10% of a single day's production were evaluated for USDA quality grade (QG) and yield grade (YG) factors. Frequencies of evaluated traits were 66.5% steer and 33.4% heifer sex classes and 82.9% native, 15.9% dairy-type, and 1.2% estimated breed types...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727062/workload-of-official-contests-net-cost-of-transport-and-metabolic-power-of-mangalarga-marchador-horses-of-marcha-batida-or-picada-gaits
#13
J Lage, M G Fonseca, G G M de Barros, W H Feringer-Júnior, G T Pereira, G C Ferraz
This study aimed to characterize the maximum heart rate (HR) and the intensity of official marcha contests (OMC) and to compare the cost of transport (COT) and metabolic power (Pmet) of Mangalarga Marchador (MM) horses of marcha batida (MB) and marcha picada (MP) gaits. Twenty-two MM horses participated in this study. The experiment was conducted in 3 phases: 1) maximum effort test (MET), 2) OMC, and 3) standardized marcha test (SMT). To characterize the HR, 19 horses (14 MB and 5 MP) underwent a MET. Of those, 13 (9 MB and 4 MP) were monitored during the OMC, which consisted of 4 stages: marcha, walk, functional trial, and rest...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727049/association-of-udder-traits-with-single-nucleotide-polymorphisms-in-crossbred-bos-indicus-bos-taurus-cows
#14
M W Tolleson, C A Gill, A D Herring, P K Riggs, J E Sawyer, J O Sanders, D G Riley
The size, support, and health of udders limit the productive life of beef cows, especially those with background, because, in general, such cows have a reputation for problems with udders. Genomic association studies of bovine udder traits have been conducted in dairy cattle and recently in Continental European beef breeds but not in cows with background. The objective of this study was to determine associations of SNP and udder support scores, teat length, and teat diameter in half (Nellore), half (Angus) cows...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727035/genetic-analysis-of-feet-and-leg-conformation-traits-in-nelore-cattle
#15
G Vargas, H H R Neves, V Cardoso, D P Munari, R Carvalheiro
Feet and leg conformation scores are important traits in beef cattle because they encompass a wide range of locomotion disorders that can lead to productive and reproductive losses. Thus, the study of feet and legs in beef cattle is essential for evaluating possible responses to selection focusing on minimizing economic losses caused by the occurrence of feet and leg problems. The aim of this study was to estimate variance components for feet and leg conformation traits in Nelore cattle. The data set contained records of approximately 300,000 animals that were born between 2000 and 2013...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727023/rapid-communication-high-resolution-quantitative-trait-loci-analysis-identifies-ltbp2-encoding-latent-transforming-growth-factor-beta-binding-protein-2-associated-with-thoracic-vertebrae-number-in-a-large-f2-intercross-between-landrace-and-korean-native-pigs
#16
H-B Park, S-H Han, J-B Lee, I-C Cho
Number of vertebrae is associated with body size and meat productivity in pigs. The aim of this study was to identify QTL and associated positional candidate genes affecting the number of thoracic vertebrae (THO). A genomewide association study was conducted in a large resource population derived from an F intercross between Landrace and Korean native pigs using the Porcine SNP 60K BeadChip and the genomewide complex trait analysis (GCTA) program based on a linear mixed-effects model. A total of 38,385 SNP markers from 1,105 F progeny were analyzed for the THO trait after filtering for quality control...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727022/triennial-growth-and-development-symposium-genetics-and-breeding-for-intramuscular-fat-and-oleic-acid-content-in-pigs
#17
J Estany, R Ros-Freixedes, M Tor, R N Pena
The intramuscular fat (IMF) and oleic acid (OL) content have been favorably related to pork quality and human health. This influences the purchasing behavior of consumers and, therefore, also shifts the attention of breeding companies toward whether these traits are included into the breeding goal of the lines producing for high-valued markets. Because IMF and OL are unfavorably associated with lean content, a key economic trait, the real challenge for the industry is not simply to increase IMF and OL, but rather to come up with the right trade-off between them and lean content...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727016/genomewide-association-mapping-and-pathway-analysis-of-meat-tenderness-in-polled-nellore-cattle
#18
L M Castro, G J M Rosa, F B Lopes, L C A Regitano, A J M Rosa, C U Magnabosco
Brazil is one of the world's largest beef exporters, although the product has a low price due to quality issues. The meat exported by Brazil is considered medium and low quality by international buyers, mainly due to lack of tenderness. The predominant Zebu breeds (80% Nellore) are known for producing tougher beef than taurine breeds. Nonetheless, some studies have shown that there is substantial genetic variability for tenderness within the Nellore breed, although it is a difficult trait to improve by conventional selection methods...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727006/genetic-analysis-of-semen-production-traits-of-japanese-black-and-holstein-bulls-genome-wide-marker-based-estimation-of-genetic-parameters-and-environmental-effect-trends
#19
Y Atagi, A Onogi, M Kinukawa, A Ogino, K Kurogi, K Uchiyama, T Yasumori, K Adachi, K Togashi, H Iwata
The semen production traits of bulls from 2 major cattle breeds in Japan, Holstein and Japanese Black, were analyzed comprehensively using genome-wide markers. Weaker genetic correlations were observed between the 2 age groups (1 to 3 yr old and 4 to 6 yr old) regarding semen volume and sperm motility compared with those observed for sperm number and motility after freeze-thawing. The preselection of collected semen for freezing had a limited effect. Given the increasing importance of bull proofs at a young age because of genomic selection and the results from preliminary studies, we used a multiple-trait model that included motility after freeze-thawing with records collected at young ages...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726993/genetic-parameters-for-wool-traits-live-weight-and-ultrasound-carcass-traits-in-merino-sheep
#20
S I Mortimer, S Hatcher, N M Fogarty, J H J van der Werf, D J Brown, A A Swan, J C Greeff, G Refshauge, J E Hocking Edwards, G M Gaunt
Genetic correlations between 29 wool production and quality traits and live weight and ultrasound fat depth (FAT) and eye muscle depth (EMD) traits were estimated from the Information Nucleus (IN). The IN comprised 8 genetically linked flocks managed across a range of Australian sheep production environments. The data were from a maximum of 9,135 progeny born over 5 yr from 184 Merino sires and 4,614 Merino dams. The wool traits included records for yearling and adult fleece weight, fiber diameter (FD), staple length (SL), fiber diameter CV (FDCV), scoured color, and visual scores for breech and body wrinkle...
May 2017: Journal of Animal Science
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