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https://www.readbyqxmd.com/read/28446759/transcriptomic-response-of-durum-wheat-to-nitrogen-starvation
#1
Pasquale L Curci, Riccardo Aiese Cigliano, Diana L Zuluaga, Michela Janni, Walter Sanseverino, Gabriella Sonnante
Nitrogen (N) is a key macronutrient representing a limiting factor for plant growth and development and affects productivity in wheat. In this study, durum wheat response to N chronic starvation during grain filling was investigated through a transcriptomic approach in roots, leaves/stems, flag leaf and spikes of cv. Svevo. Nitrogen stress negatively influenced plant height, tillering, flag leaf area, spike and seed traits, and total N content. RNA-seq data revealed 4,626 differentially expressed genes (DEGs)...
April 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28445652/identification-of-quantitative-trait-loci-underlying-seed-protein-content-of-soybean-including-main-epistatic-and-qtl-%C3%A3-environment-effects-in-different-regions-of-northeast-china
#2
Weili Teng, Wen Li, Q I Zhang, Depeng Wu, Xue Zhao, Haiyan Li, Yingpeng Han, Wenbin Li
The objective here was to identify QTL, their epistatic effects and QTLs x environments interaction underlying soybean protein content (PC). The mapping population, consisted of 129 recombinant inbred lines (RILs), was created by crossing 'Dongnong46' and 'L-100'. Phenotypic data of the parents and RILs were collected for four years in three locations of Heilongjiang Province of China. A total of 213 simple sequence repeat markers were used to construct a genetic linkage map. Eight QTLs, located on seven chromosomes (Chr), were identified to be associated with PC among the ten tested environments...
April 26, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28444789/effect-of-dietary-supplementation-of-hemp-seed-cannabis-sativa-l-on-meat-quality-and-egg-fatty-acid-composition-of-japanese-quail-coturnix-coturnix-japonica
#3
H Yalcin, Y Konca, F Durmuscelebi
This study was conducted in two separate experiments. Experiment I was conducted to investigate the effects of hemp seed (HS) on meat quality traits, and experiment II was designed to determine egg fatty acid (FA) composition in Japanese quail (Coturnix coturnix japonica). In experiment I and experiment II treatments, groups were as follows: (i) control (not included HS0), (ii) 5% HS inclusion to diets, (iii) 10% HS inclusion to diets and (iv) 20% HS inclusion to diets. In experiment I, a total of 192 7-day-old-quail were fed with HS diets for 5 weeks, and end of the experiment I, a total of 64 quail (16 each) slaughtered and meat samples were analysed for meat colour, pH, cooking and thawing loss and FA composition...
April 26, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28440574/a-worldview-of-root-traits-the-influence-of-ancestry-growth-form-climate-and-mycorrhizal-association-on-the-functional-trait-variation-of-fine-root-tissues-in-seed-plants
#4
Oscar J Valverde-Barrantes, Grégoire T Freschet, Catherine Roumet, Christopher B Blackwood
Fine-root traits play key roles in ecosystem processes, but the drivers of fine-root trait diversity remain poorly understood. The plant economic spectrum (PES) hypothesis predicts that leaf and root traits evolved in coordination. Mycorrhizal association type, plant growth form and climate may also affect root traits. However, the extent to which these controls are confounded with phylogenetic structuring remains unclear. Here we compiled information about root and leaf traits for > 600 species. Using phylogenetic relatedness, climatic ranges, growth form and mycorrhizal associations, we quantified the importance of these factors in the global distribution of fine-root traits...
April 25, 2017: New Phytologist
https://www.readbyqxmd.com/read/28439286/snp-discovery-and-genetic-variation-of-candidate-genes-relevant-to-heat-tolerance-and-agronomic-traits-in-natural-populations-of-sand-rice-agriophyllum-squarrosum
#5
Pengshan Zhao, Jiwei Zhang, Chaoju Qian, Qin Zhou, Xin Zhao, Guoxiong Chen, Xiao-Fei Ma
The extreme stress tolerance and high nutritional value of sand rice (Agriophyllum squarrosum) make it attractive for use as an alternative crop in response to concerns about ongoing climate change and future food security. However, a lack of genetic information hinders understanding of the mechanisms underpinning the morphological and physiological adaptations of sand rice. In the present study, we sequenced and analyzed the transcriptomes of two individuals representing semi-arid [Naiman (NM)] and arid [Shapotou (SPT)] sand rice genotypes...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28437553/genotype-x-environment-interaction-on-experimental-hybrids-of-chili-pepper
#6
N S S Cabral, A M Medeiros, L G Neves, C P Sudré, S Pimenta, V J Coelho, M E Serafim, R Rodrigues
In Brazil, cultivation of hybrid plants comprise near 40% of the area grown with vegetables. For Capsicum, hybrids of bell and chili peppers have already exceeded 50% and over 25% of all are commercialized seeds. This study aimed to evaluate new pepper hybrids in two environments, Cáceres, MT, and Campos dos Goytacazes, RJ, Brazil. Nine experimental hybrids of C. baccatum var. pendulum were tested and trials were performed in a randomized block design, with three replications and eight plants per plot. In each environment, plants were assessed for canopy diameter, plant height, number of fruit per plant, mean fruit mass per plant, fruit length and diameter, pulp thickness, and content of soluble solids...
April 20, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28437453/three-dominant-awnless-genes-in-common-wheat-fine-mapping-interaction-and-contribution-to-diversity-in-awn-shape-and-length
#7
Motohiro Yoshioka, Julio C M Iehisa, Ryoko Ohno, Tatsuro Kimura, Hiroyuki Enoki, Satoru Nishimura, Shuhei Nasuda, Shigeo Takumi
The awn is a long needle-like structure formed at the tip of the lemma in the florets of some grass species. It plays a role in seed dispersal and protection against animals, and can contribute to the photosynthetic activity of spikes. Three main dominant inhibitors of awn development (Hd, B1 and B2) are known in hexaploid wheat, but the causal genes have not been cloned yet and a genetic association with awn length diversity has been found only for the B1 allele. To analyze the prevalence of these three awning inhibitors, we attempted to predict the genotypes of 189 hexaploid wheat varieties collected worldwide using markers tightly linked to these loci...
2017: PloS One
https://www.readbyqxmd.com/read/28429781/geographic-variation-in-floral-traits-and-the-capacity-of-autonomous-selfing-across-allopatric-and-sympatric-populations-of-two-closely-related-centaurium-species
#8
Dorien Schouppe, Rein Brys, Mario Vallejo-Marin, Hans Jacquemyn
Floral traits and the relative contribution of autonomous selfing to total seed set varies geographically and is often driven by the availability and abundance of suitable pollinators and/or the presence of co-flowering relatives. In the latter case, competition for pollinator services and costs of hybridization can select for floral traits that reduce interspecific gene flow and contribute to prezygotic isolation, potentially leading to geographic variation in floral divergence between allopatric and sympatric populations...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28429576/suppression-of-osmads7-in-rice-endosperm-stabilizes-amylose-content-under-high-temperature-stress
#9
Hua Zhang, Heng Xu, Mengjie Feng, Ying Zhu
High temperature significantly alters the amylose content of rice, resulting in mature grains with poor eating quality. However, only few genes and/or quantitative trait loci (QTLs) involved in this process have been isolated and the molecular mechanisms of this effect remain unclear. Here, we describe a floral organ identity gene, OsMADS7, involved in stabilizing rice amylose content at high temperature. OsMADS7 is greatly induced by high temperature at the early filling stage. Constitutive suppression of OsMADS7 stabilizes amylose content under high temperature stress but results in low spikelet fertility...
April 20, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28428868/metapopulation-patterns-of-additive-and-nonadditive-genetic-variance-in-the-sea-bass-dicentrarchus-labrax
#10
Bruno Guinand, Marc Vandeputte, Mathilde Dupont-Nivet, Alain Vergnet, Pierrick Haffray, Hervé Chavanne, Béatrice Chatain
Describing and explaining the geographic within-species variation in phenotypes ("phenogeography") in the sea over a species distribution range is central to our understanding of a variety of eco-evolutionary topics. However, phenogeographic studies that have a large potential to investigate adaptive variation are overcome by phylogeographic studies, still mainly focusing on neutral markers. How genotypic and phenotypic data could covary over large geographic scales remains poorly understood in marine species...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28428791/genome-wide-association-study-for-pre-harvest-sprouting-resistance-in-a-large-germplasm-collection-of-chinese-wheat-landraces
#11
Yong Zhou, Hao Tang, Meng-Ping Cheng, Kwame O Dankwa, Zhong-Xu Chen, Zhan-Yi Li, Shang Gao, Ya-Xi Liu, Qian-Tao Jiang, Xiu-Jin Lan, Zhi-En Pu, Yu-Ming Wei, You-Liang Zheng, Lee T Hickey, Ji-Rui Wang
Pre-harvest sprouting (PHS) is mainly caused by the breaking of seed dormancy in high rainfall regions, which leads to huge economic losses in wheat. In this study, we evaluated 717 Chinese wheat landraces for PHS resistance and carried out genome-wide association studies (GWAS) using to 9,740 DArT-seq and 178,803 SNP markers. Landraces were grown across six environments in China and germination testing of harvest-ripe grain was used to calculate the germination rate (GR) for each accession at each site. GR was highly correlated across all environments...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28424715/temporal-petal-closure-benefits-reproductive-development-of-magnolia-denudata-magnoliaceae-in-early-spring
#12
Liya Liu, Chulan Zhang, Xiangyu Ji, Zhixiang Zhang, Ruohan Wang
The Magnoliaceae shows strong phylogenetic niche conservatism, in which temporal petal closure has been extensively reported. However, it is yet elusive whether temporal petal closure is an idle floral character inherited from their ancestors or an adaptive trait to their habitats. Here, we monitored the process of temporal floral closure and re-opening in a thermogenic plant, Magnolia denudata (Magnoliaceae). Furthermore, we artificially interrupted temporal petal closure and investigated its effects on development of female and male gametophytes...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28424214/functional-conservation-and-divergence-among-homoeologs-of-taspl20-and-taspl21-two-sbp-box-genes-governing-yield-related-traits-in-hexaploid-wheat
#13
Bin Zhang, Weina Xu, Xia Liu, Xinguo Mao, Ang Li, Jingyi Wang, Xiaoping Chang, Xueyong Zhang, Ruilian Jing
Maintaining high and stable yields has become an increasing challenge in wheat breeding due to climate change. Although Squamosa-promoter binding protein (SBP)-box genes have important roles in plant development, very little is known about the actual biological functions of wheat SBP-box family members. Here, we dissect the functional conservation, divergence and exploitation of homoeologs of two paralogous TaSPL wheat loci during domestication and breeding. TaSPL20 and TaSPL21 were highly expressed in the lemma and palea...
April 19, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28423007/recombinants-from-the-crosses-between-amphidiploid-and-cultivated-peanut-arachis-hypogaea-for-pest-resistance-breeding-programs
#14
Ailton Ferreira de Paula, Naiana Barbosa Dinato, Bianca Baccili Zanotto Vigna, Alessandra Pereira Fávero
Peanut is a major oilseed crop worldwide. In the Brazilian peanut production, silvering thrips and red necked peanut worm are the most threatening pests. Resistant varieties are considered an alternative to pest control. Many wild diploid Arachis species have shown resistance to these pests, and these can be used in peanut breeding by obtaining hybrid of A and B genomes and subsequent polyploidization with colchicine, resulting in an AABB amphidiploid. This amphidiploid can be crossed with cultivated peanut (AABB) to provide genes of interest to the cultivar...
2017: PloS One
https://www.readbyqxmd.com/read/28422143/dissecting-the-genetic-architecture-of-fusarium-verticillioides-seed-rot-resistance-in-maize-by-combining-qtl-mapping-and-genome-wide-association-analysis
#15
Ming Ju, Zijian Zhou, Cong Mu, Xuecai Zhang, Jingyang Gao, Yakun Liang, Jiafa Chen, Yabin Wu, Xiaopeng Li, Shiwei Wang, Jingjing Wen, Luming Yang, Jianyu Wu
Fusarium verticillioides can be transmitted via seeds and cause systemic infection in maize (Zea mays L.); its mycotoxin has harmful effects on animal and human health. We combined QTL mapping in recombinant inbred line (RIL) populations with a genome-wide association study (GWAS) of 217 diverse maize lines using 224,152 single nucleotide polymorphisms (SNPs) under controlled conditions to determine the genetic architecture of F. verticillioides seed rot (FSR) resistance. Our study identified 8 quantitative trait loci (QTLs) and 43 genes associated with 57 SNPs that were correlated with FSR resistance through linkage mapping and GWAS, respectively...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421095/exploiting-wild-relatives-for-genomics-assisted-breeding-of-perennial-crops
#16
REVIEW
Zoë Migicovsky, Sean Myles
Perennial crops are vital contributors to global food production and nutrition. However, the breeding of new perennial crops is an expensive and time-consuming process due to the large size and lengthy juvenile phase of many species. Genomics provides a valuable tool for improving the efficiency of breeding by allowing progeny possessing a trait of interest to be selected at the seed or seedling stage through marker-assisted selection (MAS). The benefits of MAS to a breeder are greatest when the targeted species takes a long time to reach maturity and is expensive to grow and maintain...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28419758/provenance-effect-on-carbon-assimilation-photochemistry-and-leaf-morphology-in-mediterranean-cistus-species-under-chilling-stress
#17
Giacomo Puglielli, Francisco J Cuevas Román, Rosangela Catoni, José M Moreno Rojas, Loretta Gratani, Laura Varone
The potential resilience of shrub species to environmental change deserves attention in those areas threatened by climate change such as the Mediterranean basin. We asked if leaves produced under climatically different conditions through the winter season up to spring can highlight the leaf traits involved in determining the potential resilience of three Cistus spp. to changing environmental conditions and to what extent intra-specific differences affect such a response. We analyzed carbon assimilation, maximum quantum efficiency of PSII photochemistry (Fv /Fm ) and the leaf morphological control of the photosynthetic process in leaves formed through the winter season up to spring in C...
April 18, 2017: Plant Biology
https://www.readbyqxmd.com/read/28419490/european-cowpea-landraces-for-a-more-sustainable-agriculture-system-and-novel-foods
#18
Márcia Carvalho, Penelope J Bebeli, Graça Pereira, Isaura Castro, Catalina Egea-Gilabert, Manuela Matos, Efstathia Lazaridi, Isabel Duarte, Teresa Lino-Neto, Georgia Ntatsi, Miguel Rodrigues, Dimitrios Savvas, Eduardo Rosa, Valdemar Carnide
BACKGROUND: Genetic diversity is fundamental for breeding programs and consequently has an important role to obtain new varieties. To properly use the genetic diversity present in germplasm collections, a good knowledge of the agro-morphological traits of each accession is needed. The aim of this study was to explore the production capacity of 24 cowpea landraces from Southern Europe, through phenotypic characterization and evaluation in three different locations of Greece and Portugal...
April 17, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28414779/seed-germination-in-relation-to-the-invasiveness-in-spiny-amaranth-and-edible-amaranth-in-xishuangbanna-sw-china
#19
Juan Ye, Bin Wen
Both spiny and edible amaranths (Amaranthus spinosus and A. tricolor) are exotic annuals in China that produce numerous small seeds every year. Spiny amaranth has become a successful invader and a troublesome weed in Xishuangbanna, but edible amaranth has not, although it is widely grown as a vegetable there. As seed germination is one of the most important life-stages contributing to the ability of a plant to become invasive, we conducted experiments to compare the effects of high temperature and water stress on seed germination in two varieties each of spiny amaranth and edible amaranth...
2017: PloS One
https://www.readbyqxmd.com/read/28410019/mating-system-evolution-under-strong-pollen-limitation-evidence-of-disruptive-selection-through-male-and-female-fitness-in-clarkia-xantiana
#20
Ryan D Briscoe Runquist, Monica A Geber, Michael Pickett-Leonard, David A Moeller
Selection on floral traits in hermaphroditic plants is determined by both male and female reproductive success. However, predictions regarding floral trait and mating system evolution are often based solely on female fitness. Selection via male fitness has the potential to affect the outcomes of floral evolution. In this study, we used paternity analysis to assess individual selfing rates and selection on floral traits via male and female fitness in an experimental population of Clarkia xantiana where pollen limitation of seed set was strong...
May 2017: American Naturalist
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