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https://www.readbyqxmd.com/read/28651317/effects-of-multi-environmental-factors-on-physiological-and-biochemical-responses-of-large-yellow-croaker-larimichthys-crocea
#1
Qian-Feng Wang, Wei-Liang Shen, Cheng Liu, Dan-Li Mu, Xiong-Fei Wu, Nian-Gang Guo, Jun-Quan Zhu
Land-based recirculating aquaculture systems (RAS) and cage culture are important methods of Larimichthys crocea production. The effects of environmental factors on physiological and biochemical aspects of L. crocea require clarification. Temperature and salinity are controlled in RAS and directly affect L. crocea growth and survival. To explore optimal parameters, the oxygen consumption rate (RO), ammonium excretion rate (RN), and O/N ratio at different temperatures (8, 14, 20, 26, and 32 °C) and salinities (5, 15, 25, and 35‰) were determined...
June 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28651022/can-natural-variation-in-grain-p-concentrations-be-exploited-in-rice-breeding-to-lower-fertilizer-requirements
#2
Fanmiao Wang, James Douglas Morrison King, Terry Rose, Tobias Kretzschmar, Matthias Wissuwa
Agricultural usage of phosphorus (P) is largely driven by the amount of P removed from fields in harvested plant matter as offtake needs to be balanced by P fertilizer application. Reducing P concentration in grains is a way to decrease P offtake and reduce P fertilizer requirements or soil P mining where insufficient P is applied. Our objective was to assesses the genotypic variation for grain P concentration present within the rice gene pool and resolve to what extent it is affected by environment (P supply) or associated with genetic factors...
2017: PloS One
https://www.readbyqxmd.com/read/28650988/transcriptomic-analysis-to-uncover-genes-affecting-cold-resistance-in-the-chinese-honey-bee-apis-cerana-cerana
#3
Kai Xu, Qingsheng Niu, Huiting Zhao, Yali Du, Yusuo Jiang
The biological activity and geographical distribution of honey bees is strongly temperature-dependent, due to their ectothermic physiology. In China, the endemic Apis cerana cerana exhibits stronger cold hardiness than Western honey bees, making the former species important pollinators of winter-flowering plants. Although studies have examined behavioral and physiological mechanisms underlying cold resistance in bees, data are scarce regarding the exact molecular mechanisms. Here, we investigated gene expression in A...
2017: PloS One
https://www.readbyqxmd.com/read/28650735/evolution-made-to-order-plant-breeding-and-technological-innovation-in-twentieth-century-america
#4
Deborah Fitzgerald
No abstract text is available yet for this article.
June 26, 2017: Annals of Science
https://www.readbyqxmd.com/read/28650654/evaluation-of-a-rapid-method-for-screening-heat-stress-tolerance-using-three-korean-wheat-triticum-aestivum-l-cultivars
#5
Hai An Truong, Chan Young Jeong, Won Je Lee, Byung Cheon Lee, Namhyun Chung, Chon-Sik Kang, Young-Keun Cheong, Suk-Whan Hong, Hojoung Lee
Thermotolerance in plants is a topic of concern given the current trends in global warming. Here, we aimed to develop a rapid and reproducible screening method for selection of heat stress- tolerant wheat varieties to expedite the breeding process. We tested the robustness of the screen in three Korean wheat cultivars, 'BackJung', 'KeumKang', and 'ChoKyeong'. We showed that 4-day-old seedlings of 'KeumKang' had the highest survival rates after a 45C treatment for 20 h. Moreover, the ability to retain chlorophyll and antioxidant activity was also highest in 'KeumKang'...
June 26, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28650428/breeding-barriers-duplicate-s-genes-form-new-barrier
#6
Andrew McCubbin
No abstract text is available yet for this article.
June 26, 2017: Nature Plants
https://www.readbyqxmd.com/read/28650150/genome-wide-association-mapping-of-seed-coat-color-in-brassica-napus
#7
Jia Wang, Xiaohua Xian, Xinfu Xu, Cunmin Qu, Kun Lu, Jiana Li, Liezhao Liu
Seed coat color is an extremely important breeding characteristic of Brassica napus. To elucidate the factors affecting the genetic architecture of seed coat color, a genome-wide association study (GWAS) of seed coat color was conducted with a diversity panel comprising 520 B. napus cultivars and inbred lines. In total, 22 single-nucleotide polymorphisms (SNPs) distributed on 7 chromosomes were found to be associated with seed coat color. The most significant SNPs were found in 2014 near Bn-scaff_15763_1-p233999, only 43...
June 26, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28649351/new-insights-into-the-genetic-composition-and-phylogenetic-relationship-of-wolves-and-dogs-in-the-iberian-peninsula
#8
Ana Elisabete Pires, Isabel R Amorim, Carla Borges, Fernanda Simões, Tatiana Teixeira, Andreia Quaresma, Francisco Petrucci-Fonseca, José Matos
This study investigates the gene pool of Portuguese autochthonous dog breeds and their wild counterpart, the Iberian wolf subspecies (Canis lupus signatus), using standard molecular markers. A combination of paternal and maternal molecular markers was used to investigate the genetic composition, genetic differentiation and genetic relationship of native Portuguese dogs and the Iberian wolf. A total of 196 unrelated dogs, including breed and village dogs from Portugal, and other dogs from Spain and North Africa, and 56 Iberian wolves (wild and captive) were analyzed for nuclear markers, namely Y chromosome SNPs, Y chromosome STR loci, autosomal STR loci, and a mitochondrial fragment of the control region I...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28649337/the-role-of-conservative-versus-innovative-nesting-behavior-on-the-25-year-population-expansion-of-an-avian-predator
#9
Andreia Dias, Luís Palma, Filipe Carvalho, Dora Neto, Joan Real, Pedro Beja
Species ranges often change in relation to multiple environmental and demographic factors. Innovative behaviors may affect these changes by facilitating the use of novel habitats, although this idea has been little explored. Here, we investigate the importance of behavior during range change, using a 25-year population expansion of Bonelli's eagle in southern Portugal. This unique population is almost exclusively tree nesting, while all other populations in western Europe are predominantly cliff nesting. During 1991-2014, we surveyed nest sites and estimated the year when each breeding territory was established...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28649332/behavioral-evidence-of-hunting-and-foraging-techniques-by-a-top-predator-suggests-the-importance-of-scavenging-for-preadults
#10
Antoni Margalida, MªÀngels Colomer, Roberto Sánchez, Francisco Javier Sánchez, Javier Oria, Luis Mariano González
Scavenging may be a regular feeding behavior for some facultative raptor species occupying low quality habitats and/or with little experience in hunting techniques. However, its importance has been largely underestimated due to methodological limitations in identifying the real proportion in the diet. Here, through direct observations, we assessed the hunting and foraging success of the threatened Spanish imperial eagle Aquila adalberti determining the influence of age, sex, breeding status, habitat quality, prey type, and landscape characteristics...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28649328/spatiotemporal-variation-in-mechanisms-driving-regional-scale-population-dynamics-of-a-threatened-grassland-bird
#11
Danielle M Ethier, Nicola Koper, Thomas D Nudds
To achieve national population targets for migratory birds, landscape-level conservation approaches are increasingly encouraged. However, knowledge of the mechanisms that drive spatiotemporal patterns in population dynamics are needed to inform scale-variant policy development. Using hierarchical Bayesian models and variable selection, we determined by which mechanism(s), and to what extent, changes in quantity and quality of surrogate grassland habitats contributed to regional variation in population trends of an obligatory grassland bird, Bobolink (Dolichonyx oryzivorous)...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28649264/genome-wide-analysis-of-the-pvhsp20-family-in-switchgrass-motif-genomic-organization-and-identification-of-stress-or-developmental-related-hsp20s
#12
Haidong Yan, Ailing Zhang, Jing Chen, Xiaoyan He, Bin Xu, Guanqi Xie, Zhiming Miao, Xinquan Zhang, Linkai Huang
Hsp20 proteins exist in all plant species and represent the most abundant small heat shock proteins (sHSPs) in plants. Hsp20s were known as chaperones maintaining cellular homeostasis during heat or other kinds of abiotic stresses. The objective of this study was to understand the phylogenetic relationship, genomic organization, diversification of motif modules, genome localization, expression profiles, and interaction networks of switchgrass (Panicum virgatum L.) Hsp20s (PvHsp20s). A total of 63 PvHsp20s were identified with their consensus as well as unique ACD motifs and gene structures analyzed...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28649253/variable-level-of-dominance-of-candidate-genes-controlling-drought-functional-traits-in-maize-hybrids
#13
Ha Van Gioi, Mallana Gowdra Mallikarjuna, Mittal Shikha, Banduni Pooja, Shailendra K Jha, Prasanta K Dash, Arunkumar M Basappa, Raveendra N Gadag, Atmakuri Ramakrishna Rao, Thirunavukkarasu Nepolean
Breeding maize for drought tolerance necessitates the knowledge on tolerant genotypes, molecular basis of drought tolerance mechanism, action, and expression pattern of genes. Studying the expression pattern and gene action of candidate genes during drought stress in the hybrids will help in choosing target genes for drought tolerance breeding. In the present investigation, a set of five hybrids and their seven parents with a variable level of tolerance to drought stress was selected to study the magnitude and the direction of 52 drought-responsive candidate genes distributed across various biological functions, viz...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28649239/insights-into-the-classical-genetics-of-clitopilus-passeckerianus-the-pleuromutilin-producing-mushroom
#14
Kate M J de Mattos-Shipley, Gary D Foster, Andy M Bailey
Clitopilus passeckerianus is the fungal species responsible for the production of pleuromutilin, a diterpene antibiotic that is gaining in commercial interest. Production of the antibiotic is constrained by the low titers typically obtained from isolates. We therefore set out to investigate the possibility of using classical breeding techniques coupled with genetic manipulation as a means to develop such fungi. We show that the original production strain of C. passeckerianus is able to fruit under laboratory conditions, giving viable haploid meiotic basidiospores...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28648997/effects-tolerance-mechanisms-and-management-of-salt-stress-in-grain-legumes
#15
REVIEW
Muhammad Farooq, Nirmali Gogoi, Mubshar Hussain, Sharmistha Barthakur, Sreyashi Paul, Nandita Bharadwaj, Hussein M Migdadi, Salem S Alghamdi, Kadambot H M Siddique
Salt stress is an ever-present threat to crop yields, especially in countries with irrigated agriculture. Efforts to improve salt tolerance in crop plants are vital for sustainable crop production on marginal lands to ensure future food supplies. Grain legumes are a fascinating group of plants due to their high grain protein contents and ability to fix biological nitrogen. However, the accumulation of excessive salts in soil and the use of saline groundwater are threatening legume production worldwide. Salt stress disturbs photosynthesis and hormonal regulation and causes nutritional imbalance, specific ion toxicity and osmotic effects in legumes to reduce grain yield and quality...
June 16, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28648995/when-the-ball-is-in-the-female-s-court-how-the-scramble-competition-mating-system-of-the-north-american-red-squirrel-has-shaped-male-physiology-and-testosterone-dynamics
#16
Rudy Boonstra, Adam Dušek, Jeffrey E Lane, Stan Boutin
Male reproductive success in most mammals is determined by their success in direct inter-male competition through aggression and conflict, resulting in female-defense mating systems being predominant. This is linked to male testosterone levels and its dynamics. However, in certain environments, a scramble-competition mating system has evolved, where female reproductive behavior takes precedence and male testosterone dynamics are unlikely to be related to inter-male competition. We studied the North American red squirrel (Tamiasciurus hudsonicus), a species with a well-established scramble-competition system...
June 22, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28648236/the-stress-test-does-what-doesn-t-kill-me-make-me-a-super-elite-athlete
#17
Ian H Robertson
Super-elite athletes succeed in part because: (a) previous hardship builds resilience, (b) success breeds success, and (c) they can rename anxiety as excitement. It is unlikely that most of their outstanding success is due to psychodynamic compensatory mechanisms.
2017: Progress in Brain Research
https://www.readbyqxmd.com/read/28647896/omics-based-hybrid-prediction-in-maize
#18
Matthias Westhues, Tobias A Schrag, Claas Heuer, Georg Thaller, H Friedrich Utz, Wolfgang Schipprack, Alexander Thiemann, Felix Seifert, Anita Ehret, Armin Schlereth, Mark Stitt, Zoran Nikoloski, Lothar Willmitzer, Chris C Schön, Stefan Scholten, Albrecht E Melchinger
Complementing genomic data with other "omics" predictors can increase the probability of success for predicting the best hybrid combinations using complex agronomic traits. Accurate prediction of traits with complex genetic architecture is crucial for selecting superior candidates in animal and plant breeding and for guiding decisions in personalized medicine. Whole-genome prediction has revolutionized these areas but has inherent limitations in incorporating intricate epistatic interactions. Downstream "omics" data are expected to integrate interactions within and between different biological strata and provide the opportunity to improve trait prediction...
June 24, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28647812/genetically-engineered-orange-petunias-on-the-market
#19
Hany Bashandy, Teemu H Teeri
Unauthorized genetically engineered orange petunias were found on the market. Genetic engineering of petunia was shown to lead to novel flower color some 20 years ago. Here we show that petunia lines with orange flowers, generated for scientific purposes, apparently found their way to petunia breeding programmes, intentionally or unintentionally. Today they are widely available, but have not been registered for commerce.
June 24, 2017: Planta
https://www.readbyqxmd.com/read/28647758/a-meta-analysis-of-quantitative-trait-loci-for-abiotic-and-biotic-stress-resistance-in-tetraploid-cotton
#20
Abdelraheem Abdelraheem, Feng Liu, Mingzhou Song, Jinfa F Zhang
The number and location of mapped quantitative trait loci (QTL) depend on genetic populations and testing environments. The identification of consistent QTL across genetic backgrounds and environments is a pre-requisite to marker-assisted selection. This study analyzed a total of 661 abiotic and biotic stress resistance QTL based on our previous work and other publications using the meta-analysis software Biomercator. It identified chromosomal regions containing QTL clusters for different resistance traits and hotspots for a particular resistance trait in cotton from 98 QTL for drought tolerance under greenhouse (DT) and 150 QTL in field conditions (FDT), 80 QTL for salt tolerance in the greenhouse conditions (ST), 201 QTL for resistance to Verticillium wilt (VW, Verticillium dahliae), 47 QTL for resistance to Fusarium wilt (FW, Fusarium oxysporum f...
June 24, 2017: Molecular Genetics and Genomics: MGG
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