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https://www.readbyqxmd.com/read/28646075/ben-rob-and-the-making-of-a-petunia-flower
#1
Jennifer A Lockhart
No abstract text is available yet for this article.
June 23, 2017: Plant Cell
https://www.readbyqxmd.com/read/28646074/divergence-of-the-floral-a-function-between-an-asterid-and-a-rosid-species
#2
Patrice Morel, Klaas Heijmans, Frederique Rozier, Jan Zethof, Sophy Chamot, Suzanne Rodrigues Bento, Aurelie Vialette-Guiraud, Pierre Chambrier, Trehin Christophe, Michiel Vandenbussche
The ABC model is widely used as a genetic framework for understanding floral development and evolution. In this model, the A-function is required for the development of sepals and petals and to antagonize the C-function in the outer floral whorls. In the rosid species Arabidopsis thaliana, the AP2-type AP2 transcription factor represents a major A-function protein, but how the A-function is encoded in other species is not well understood. Here we show that in the asterid species petunia (Petunia hybrida), AP2B/BLIND ENHANCER (BEN) confines the C-function to the inner petunia floral whorls, in parallel with the microRNA BLIND...
June 23, 2017: Plant Cell
https://www.readbyqxmd.com/read/28645920/common-garden-test-of-range-limits-as-predicted-by-a-species-distribution-model-in-the-annual-plant-mimulus-bicolor
#3
Andrea L Dixon, Jeremiah W Busch
PREMISE OF THE STUDY: Direct tests of a species distribution model (SDM) were used to evaluate the hypothesis that the northern and southern edges of Mimulus bicolor's geographical range are limited by temperature and precipitation. METHODS: Climatic suitability was predicted using an SDM informed only by temperature and precipitation variables. These predictions were tested by growing plants in growth chambers with temperature and watering treatments informed by weather stations characteristic of environments at the geographic center, edges, and outside the range...
June 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28645249/comparative-transcriptomic-analysis-of-the-evolution-and-development-of-flower-size-in-saltugilia-polemoniaceae
#4
Jacob B Landis, Douglas E Soltis, Pamela S Soltis
BACKGROUND: Flower size varies dramatically across angiosperms, representing innovations over the course of >130 million years of evolution and contributing substantially to relationships with pollinators. However, the genetic underpinning of flower size is not well understood. Saltugilia (Polemoniaceae) provides an excellent non-model system for extending the genetic study of flower size to interspecific differences that coincide with variation in pollinators. RESULTS: Using targeted gene capture methods, we infer phylogenetic relationships among all members of Saltugilia to provide a framework for investigating the genetic control of flower size differences via RNA-Seq de novo assembly...
June 23, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28645035/ctab-induced-hierarchical-bismuth-microspheres-for-visible-light-photocatalytic-study
#5
Fengnan Zhang, Yan Zhao, Yawen Li, Gongjuan Wu, Jingzhe Zhao
Nanosheet constructed bismuth microspheres were prepared through an aqueous reduction approach in the presence of CTAB molecules, with initial formed BiOCl as the precursor and hydrazine hydrate as the reductant. The flower-like morphology and platelet units of BiOCl precursor determined the evolution of hierarchical Bi microspheres through a morphology-heredity process. Trisodium citrate was introduced to keep the Bi microspheres from oxidation, the high purity in composition are beneficial to eliminate the influence of bismuth oxides...
June 13, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28645033/acetic-acid-assisted-fabrication-of-hierarchical-flower-like-bi2o3-for-photocatalytic-degradation-of-sulfamethoxazole-and-rhodamine-b-under-solar-irradiation
#6
Yueping Bao, Teik-Thye Lim, Ziyi Zhong, Rong Wang, Xiao Hu
With the assistance of acetic acid (CH3COOH), a novel 3D flower-like Bi2O3 was synthesized via hydrothermal process followed by calcination. For the first time, the role of CH3COOH as a capping agent in the formation of flower-like structure was investigated. The as-prepared flower-like Bi2O3 had a high activity on the degradation of sulfamethoxazole (SMX) under simulated solar light irradiation due to the narrow band gap of 2.69eV, high percentage of β-Bi2O3 as well as high intensity of polar facets (120) and (200)...
May 23, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28644898/spatio-temporal-orientation-of-microtubules-controls-conical-cell-shape-in-arabidopsis-thaliana-petals
#7
Huibo Ren, Xie Dang, Xianzhi Cai, Peihang Yu, Yajun Li, Shanshan Zhang, Menghong Liu, Binqing Chen, Deshu Lin
The physiological functions of epidermal cells are largely determined by their diverse morphologies. Most flowering plants have special conical-shaped petal epidermal cells that are thought to influence light capture and reflectance, and provide pollinator grips, but the molecular mechanisms controlling conical cell shape remain largely unknown. Here, we developed a live-confocal imaging approach to quantify geometric parameters of conical cells in Arabidopsis thaliana (A.thaliana). Through genetic screens, we identified katanin (KTN1) mutants showing a phenotype of decreased tip sharpening of conical cells...
June 23, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28644857/beneficial-effects-of-hibiscus-rosa-sinensis-l-flower-aqueous-extract-in-pregnant-rats-with-diabetes
#8
Luana Alves Freitas Afiune, Thaís Leal-Silva, Yuri Karen Sinzato, Rafaianne Queiroz Moraes-Souza, Thaigra Sousa Soares, Kleber Eduardo Campos, Ricardo Toshio Fujiwara, Emilio Herrera, Débora Cristina Damasceno, Gustavo Tadeu Volpato
PURPOSE: The Hibiscus rosa-sinensis flower is widely used in Brazilian traditional medicine for the treatment of diabetes and has shown antifertility activity in female Wistar rats. However, there is no scientific confirmation of its effect on diabetes and pregnancy. The aim of this study was evaluate the effect of aqueous extract of H. rosa-sinensis flowers on maternal-fetal outcome in pregnant rats with diabetes. METHODS: Diabetes was induced by streptozotocin (STZ, 40 mg/kg) in virgin, adult, female Wistar rats...
2017: PloS One
https://www.readbyqxmd.com/read/28644542/the-conservation-significance-of-natural-hybridisation-in-mediterranean-plants-from-a-case-study-on-cyclamen-primulaceae-to-a-general-perspective
#9
John D Thompson, Perrine Gauthier, Guillaume Papuga, Virginie Pons, Max Debussche, Emmanuele Farris
Hybridisation plays a prominent role in plant evolution due to its influence on genetic diversity, fitness and adaptive potential We identify a case of on-going hybrid evolution of floral phenotypes in disjunct populations of Cyclamen balearicum and C. repandum subsp. repandum on Corsica and Sardinia. Hybrid populations on the two islands contain similar patterns of variation in flower colour and size but are probably at different stages in the evolutionary process of hybridisation and differences in the frequency of floral types and flower size suggest hybrid vigour that may contribute to the dynamics and maintenance of hybrid forms...
June 23, 2017: Plant Biology
https://www.readbyqxmd.com/read/28644109/the-timing-of-gigantea-expression-during-day-night-cycles-varies-with-the-geographical-origin-of-arabidopsis-accessions
#10
Amaury de Montaigu, George Coupland
Latitudinal clines in circadian rhythms have consistently been described in various plant species, with the most recent examples appearing in soybean cultivars and in monkey flower natural populations. These latitudinal clines provide evidence that natural variation in circadian rhythms is adaptive, but it is still unclear what adaptive benefits this variation confers, particularly because circadian rhythms are not usually measured in day/night conditions that reflect those experienced by organisms in nature...
June 23, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28642775/ectopic-expression-of-the-grape-hyacinth-muscari-armeniacum-r2r3-myb-transcription-factor-gene-maan2-induces-anthocyanin-accumulation-in-tobacco
#11
Kaili Chen, Hongli Liu, Qian Lou, Yali Liu
Anthocyanins are responsible for the different colors of ornamental plants. Grape hyacinth (Muscari armeniacum), a monocot plant with bulbous flowers, is popular for its fascinating blue color. In the present study, we functionally characterized an R2R3-MYB transcription factor gene MaAN2 from M. armeniacum. Our results indicated that MaAN2 participates in controlling anthocyanin biosynthesis. Sequence alignment and phylogenetic analysis suggested that MaAN2 belonged to the R2R3-MYB family AN2 subgroup. The anthocyanin accumulation of grape hyacinth flowers was positively correlated with the expression of MaAN2...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28640973/production-of-red-flowered-oilseed-rape-via-the-ectopic-expression-of-orychophragmus-violaceus-ovpap2
#12
Wenqin Fu, Daozong Chen, Qi Pan, Fengfeng Li, Zhigang Zhao, Xianhong Ge, Zaiyun Li
Oilseed rape (Brassica napus L.), which has yellow flowers, is both an important oil crop and a traditional tourism resource in China, whereas the Orychophragmus violaceus, which has purple flowers, likely possesses a candidate gene or genes to alter the flower color of oilseed rape. A previously established B. napus line has a particular pair of O. violaceus chromosomes (M4) and exhibits slightly red petals. In this study, the transcriptomic analysis of M4, B. napus (H3), and O. violaceus with purple petals (OvP) and with white petals (OvW) revealed that most anthocyanin biosynthesis genes were up-regulated in both M4 and OvP...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640834/overexpression-of-gmfdl19-enhances-tolerance-to-drought-and-salt-stresses-in-soybean
#13
Yuanyuan Li, Quanzhen Chen, Haiyang Nan, Xiaoming Li, Sijia Lu, Xiaohui Zhao, Baohui Liu, Changhong Guo, Fanjiang Kong, Dong Cao
The basic leucine zipper (bZIP) family of transcription factors plays an important role in the growth and developmental process as well as responds to various abiotic stresses, such as drought and high salinity. Our previous work identified GmFDL19, a bZIP transcription factor, as a flowering promoter in soybean, and the overexpression of GmFDL19 caused early flowering in transgenic soybean plants. Here, we report that GmFDL19 also enhances tolerance to drought and salt stress in soybean. GmFDL19 was determined to be a group A member, and its transcription expression was highly induced by abscisic acid (ABA), polyethylene glycol (PEG 6000) and high salt stresses...
2017: PloS One
https://www.readbyqxmd.com/read/28640437/repeated-evolution-of-vertebrate-pollination-syndromes-in-a-recently-diverged-andean-plant-clade
#14
Laura P Lagomarsino, Elisabeth J Forrestel, Nathan Muchhala, Charles C Davis
While specialized interactions, including those involving plants and their pollinators, are often invoked to explain high species diversity, they are rarely explored at macroevolutionary scales. We investigate the dynamic evolution of hummingbird and bat pollination syndromes in the centropogonid clade (Lobelioideae: Campanulaceae), an Andean-centered group of ∼550 angiosperm species. We demonstrate that flowers hypothesized to be adapted to different pollinators based on flower color fall into distinct regions of morphospace, and this is validated by morphology of species with known pollinators...
June 22, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28639851/activated-carbon-of-babassu-coconut-impregnated-with-copper-nanoparticles-by-green-synthesis-for-the-removal-of-nitrate-in-aqueous-solution
#15
Rebecca Manesco Paixão, Isabela Maria Reck, Rosângela Bergamasco, Marcelo Fernandes Vieira, Angélica Marquetotti Salcedo Vieira
The present study was conducted to impregnate the surface of a carbon of vegetable origin with copper nanoparticles using the green synthesis method with the aqueous extract of Hibiscus sabdariffa flowers, rich in phenolic compounds, which are responsible for the reduction and impregnation of metal nanoparticles. Batch adsorption assays were conducted aimed at nitrate removal with pure (GAC) and impregnated (IGAC) carbon, for comparative purposes. It was found that impregnation increases the efficiency of the carbon by 4 times in terms of the maximum adsorption capacity, which was 10...
June 22, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28639307/anti-d-in-a-mother-hemizygous-for-the-variant-rhd-dnb-gene-associated-with-hemolytic-disease-of-the-fetus-and-newborn
#16
Kelli M Quantock, Genghis H Lopez, Catherine A Hyland, Yew-Wah Liew, Robert L Flower, Frans J Niemann, Arthur Joyce
BACKGROUND: Individuals with the partial D phenotype when exposed to D+ red blood cells (RBCs) carrying the epitopes they lack may develop anti-D specific for the missing epitopes. DNB is the most common partial D in Caucasians and the clinical significance for anti-D in these individuals is unknown. STUDY DESIGN AND METHODS: This article describes the serologic genotyping results and clinical manifestations in two group D+ babies of a mother presenting as group O, D+ with alloanti-D...
June 21, 2017: Transfusion
https://www.readbyqxmd.com/read/28638836/detecting-the-candidate-gender-determinants-by-bioinformatic-prediction-of-mirnas-and-their-targets-from-transcriptome-sequences-of-the-male-and-female-flowers-in-salix-suchowensis
#17
Suyun Wei, Ning Ye, Tongming Yin
MicroRNAs (miRNAs) belong to a class of small, noncoding, and endogenous single-stranded RNAs that negatively regulate gene expression at the posttranscriptional level. Potential miRNAs can be identified based on sequence homology since miRNAs are highly conserved in plants. In this study, we aligned the expressed sequence tags derived from flower buds of male and female S. suchowensis to miRNAs in the miRBase, which enable us to identify 34 potential miRNAs from flower buds of the alternate sexes. Among them, 11 were from the female and 23 were from the male...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28638720/negative-emotion-evoked-by-viewing-snakes-has-a-motivating-effect-on-cognitive-processing-in-human-children-with-or-without-intellectual-disability
#18
Nobuo Masataka
BACKGROUND: It is well known that prioritization of the processing of threatening stimuli generally induces deleterious effects on task performance. However, a study recently reported that emotion (possibly fear) evoked by viewing images of snakes exerts a facilitating effect upon making judgments of the images' color in neurotypical adults and schoolchildren. Here, the author has attempted to confirm the relevance of this notion in children with and without intellectual disability. METHODS: The author here compared the reaction time required to name the colors of snake and flower images between children with Down syndrome (DS) and mental age matched, typically-developing (TD) children...
June 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28638392/evaluation-of-borage-extracts-as-potential-biostimulant-using-a-phenomic-agronomic-physiological-and-biochemical-approach
#19
Roberta Bulgari, Silvia Morgutti, Giacomo Cocetta, Noemi Negrini, Stefano Farris, Aldo Calcante, Anna Spinardi, Enrico Ferrari, Ilaria Mignani, Roberto Oberti, Antonio Ferrante
Biostimulants are substances able to improve water and nutrient use efficiency and counteract stress factors by enhancing primary and secondary metabolism. Premise of the work was to exploit raw extracts from leaves (LE) or flowers (FE) of Borago officinalis L., to enhance yield and quality of Lactuca sativa 'Longifolia,' and to set up a protocol to assess their effects. To this aim, an integrated study on agronomic, physiological and biochemical aspects, including also a phenomic approach, has been adopted...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28638387/predicting-flowering-behavior-and-exploring-its-genetic-determinism-in-an-apple-multi-family-population-based-on-statistical-indices-and-simplified-phenotyping
#20
Jean-Baptiste Durand, Alix Allard, Baptiste Guitton, Eric van de Weg, Marco C A M Bink, Evelyne Costes
Irregular flowering over years is commonly observed in fruit trees. The early prediction of tree behavior is highly desirable in breeding programmes. This study aims at performing such predictions, combining simplified phenotyping and statistics methods. Sequences of vegetative vs. floral annual shoots (AS) were observed along axes in trees belonging to five apple related full-sib families. Sequences were analyzed using Markovian and linear mixed models including year and site effects. Indices of flowering irregularity, periodicity and synchronicity were estimated, at tree and axis scales...
2017: Frontiers in Plant Science
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