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https://www.readbyqxmd.com/read/29340787/a-profilin-gene-promoter-from-switchgrass-panicum-virgatum-l-directs-strong-and-specific-transgene-expression-to-vascular-bundles-in-rice
#1
Wenzhi Xu, Wusheng Liu, Rongjian Ye, Mitra Mazarei, Debao Huang, Xinquan Zhang, C Neal Stewart
A switchgrass vascular tissue-specific promoter (PvPfn2) and its 5'-end serial deletions drive high levels of vascular bundle transgene expression in transgenic rice. Constitutive promoters are widely used for crop genetic engineering, which can result in multiple off-target effects, including suboptimal growth and epigenetic gene silencing. These problems can be potentially avoided using tissue-specific promoters for targeted transgene expression. One particularly urgent need for targeted cell wall modification in bioenergy crops, such as switchgrass (Panicum virgatum L...
January 17, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29340613/biomass-increase-under-zinc-deficiency-caused-by-delay-of-early-flowering-in-arabidopsis
#2
Xiaochao Chen, Uwe Ludewig
Plants generally produce more biomass when all nutrients are available in sufficient amounts. In addition to environmental constraints, genetic and developmental factors, such as the transition from vegetative to reproductive growth, restrict maximal yield. Here we report the peculiar observation that a subset of Arabidopsis thaliana accessions produced larger shoot rosette diameters when grown in zinc (Zn)-deficient conditions, compared with Zn-sufficient conditions. This was associated with early flowering that restricted the leaf length under Zn sufficiency...
January 11, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29340606/leaves-not-roots-or-floral-tissue-are-the-main-site-of-rapid-external-pressure-induced-aba-biosynthesis-in-angiosperms
#3
Feng-Ping Zhang, Frances Sussmilch, David S Nichols, Amanda A Cardoso, Timothy J Brodribb, Scott A M McAdam
Rapid biosynthesis of abscisic acid (ABA) in the leaf, triggered by a decrease in cell volume, is essential for a functional stomatal response to vapour pressure deficit (VPD) in angiosperms. However, it is not known whether rapid biosynthesis of ABA is triggered in other plant tissues as well. Through the application of external pressure to flower, root and leaf tissues, we test whether a reduction in cell volume can trigger rapid increases in ABA levels across plant body in two species Solanum lycopersicum and Passiflora tarminiana...
January 11, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29340223/yabby3-orthologous-genes-in-wild-tomato-species-structure-variability-and-expression
#4
M A Filyushin, M A Slugina, A V Shchennikova, E Z Kochieva
Evolution of the genes encoding YABBY transcription factors is believed to be one of the key reasons for flat leaf emergence from the radially symmetrical stem and gynoecium diversity. YABBY genes determine the identity of the abaxial surface of all aboveground lateral organs in seed plants. In the present study, complete sequences of YABBY3-orthologous genes were identified and characterized in 13 accessions of cultivated and wild tomato species with diverse morphophysiology of leaves, flowers, and fruits...
October 2017: Acta Naturae
https://www.readbyqxmd.com/read/29339320/primary-obstruction-of-the-foramen-of-luschka-anatomy-histology-and-clinical-significance
#5
Laszlo Barany, Gabor Baksa, Patonay Lajos, Gergely Racz, Oliver Ganslandt, Michael Buchfelder, Peter Kurucz
BACKGROUND: The foramen of Luschka is a natural aperture between the fourth ventricle and the subarachnoid space at the cerebellopontine angle (CPA). Membranous closure of this foramen is referred to as primary obstruction. The available information about this variant and its role in the development of the cysts of the posterior fossa are contradictory in the literature. METHODS: Sixty-one formalin-fixed human brains (122 foramina) were involved in this study. Both the macroscopic and the histological features of the obstructed foramina were examined...
January 12, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29338682/soybean-mads-box-gene-gmagl1-promotes-flowering-via-the-photoperiod-pathway
#6
Xuanrui Zeng, Hailun Liu, Hongyang Du, Sujing Wang, Wenming Yang, Yingjun Chi, Jiao Wang, Fang Huang, Deyue Yu
BACKGROUND: The MADS-box transcription factors are an ancient family of genes that regulate numerous physiological and biochemical processes in plants and facilitate the development of floral organs. However, the functions of most of these transcription factors in soybean remain unknown. RESULTS: In this work, a MADS-box gene, GmAGL1, was overexpressed in soybean. Phenotypic analysis showed that GmAGL1 overexpression not only resulted in early maturation but also promoted flowering and affected petal development...
January 16, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29338642/functional-evolution-of-biosynthetic-enzymes-that-produce-plant-volatiles
#7
Takao Koeduka
Plants synthesize volatile compounds to attract pollinators. The volatiles emitted by flowers are often complex mixtures of organic compounds; pollinators are capable of distinctly recognizing different volatile compounds. Plants also produce volatile compounds to protect themselves against herbivores and pathogens. Some of the volatile compounds produced in floral and vegetative tissues are toxic to insects and microbes. To adapt changes in the environment, plants have evolved the ability to synthesize a unique set of volatiles...
January 17, 2018: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/29338359/characterization-of-moso-bamboo-phyllostachys-edulis-dof-factors-in-floral-development-and-abiotic-stress-responses
#8
Zhanchao Cheng, Dan Hou, Jun Liu, Xiangyu Li, Lihua Xie, Yanjun Ma, Jian Gao
The Dof transcription factor (TF) family belongs to a class of plant-specific TFs, and is involved in plant growth, development, and response to abiotic stresses. However, there are only very limited reports on the characterization of Dof TFs in moso bamboo. In the present research, PheDofs showed specific expression profiles based on RNA-seq data analyses. The co-experssion network indicated that PheDof12, PheDof14 and PheDof16 might play vital roles during flower development. Cis-regulatory element analysis of these PheDof genes suggested diverse functions...
January 16, 2018: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/29338338/sesbagrandiflorain-a-and-b-isolation-of-two-new-2-arylbenzofurans-from-the-stem-bark-of-sesbania-grandiflora
#9
Noviany Noviany, Arif Nurhidayat, Sutopo Hadi, Tati Suhartati, Muhammad Aziz, Neny Purwitasari, Iman Subasman
Native to tropical Asia, Sesbania grandiflora (L.), Pers is a member of the Fabaceae family of flowering plants. All parts of S. grandiflora are used in traditional medicine and phytochemical investigations have been conducted on extracts of the leaves, seeds and roots of S. grandiflora to provide scientific validation of its properties. However, to date, no study has determined the phytochemical constituents of S. grandiflora stem bark. The stem bark powdered of S. grandiflora was extracted exhaustively with n-hexane, EtOAc and 90% aqueous MeOH sequentially...
January 16, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29337075/brassinosteroids-dominate-hormonal-regulation-of-plant-thermomorphogenesis-via-bzr1
#10
Carla Ibañez, Carolin Delker, Cristina Martinez, Katharina Bürstenbinder, Philipp Janitza, Rebecca Lippmann, Wenke Ludwig, Hequan Sun, Geo Velikkakam James, Maria Klecker, Alexandra Grossjohann, Korbinian Schneeberger, Salome Prat, Marcel Quint
Thermomorphogenesis is defined as the suite of morphological changes that together are likely to contribute to adaptive growth acclimation to usually elevated ambient temperature [1, 2]. While many details of warmth-induced signal transduction are still elusive, parallels to light signaling recently became obvious (reviewed in [3]). It involves photoreceptors that can also sense changes in ambient temperature [3-5] and act, for example, by repressing protein activity of the central integrator of temperature information PHYTOCHROME-INTERACTING FACTOR 4 (PIF4 [6])...
January 5, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29336574/janus-type-gold-polythiophene-composites-formed-via-redox-reaction-at-the-ionic-liquid-water-interface
#11
Naoya Nishi, Ikumi Yajima, Ken-Ichi Amano, Tetsuo Sakka
Janus-type Au/polythiophene (PT) composites have been prepared by utilizing the liquid/liquid interface between water (W) and a hydrophobic ionic liquid (IL) as the redox reaction site. AuCl4- are reductively deposited and terthiophene are oxidatively polymerized spacio-selectively at the IL|W interface, leading to the formation of the Au/PT composites. The composites are Janus-type Au-attached PT plates with two surface morphologies, flat surface and flower-like surface at the W and IL sides of the plates at the IL|W interface, respectively...
January 16, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29336227/extracts-from-lupinus-albescens-antioxidant-power-and-antifungal-activity-in-vitro-against-phytopathogenic-fungi
#12
Tássia C Confortin, Izelmar Todero, Juliana F Soares, Luciana Luft, Thiarles Brun, Jéssica E Rabuske, Cicero U Nogueira, Marcio A Mazutti, Giovani L Zabot, Marcus V Tres
Fungi are considered the most damaging microorganisms in agriculture. The indiscriminate use of chemical treatments in agricultural products causes the development of pest resistance and affects human health. An alternative to synthetic fungicides is the use of natural products such as plant extracts for the management of fungal diseases in plants. Extracts from different parts of Lupinus albescens (roots, stalks, leaves, and flowers) were obtained by extraction using supercritical carbon dioxide (CO2) or compressed liquefied petroleum gas (LPG)...
January 16, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29336039/pollen-germination-and-in-vivo-fertilization-in-response-to-high-temperature-during-flowering-in-hybrid-and-inbred-rice
#13
Wanju Shi, Xiang Li, Ralf C Schmidt, Paul C Struik, Xinyou Yin, S V Krishna Jagadish
High temperature during flowering in rice causes spikelet sterility and is a major threat to rice productivity in tropical and subtropical regions, where hybrid rice development is increasingly contributing to sustain food security. However, the sensitivity of hybrids to increasing temperature and physiological responses in terms of dynamic fertilization processes are unknown. To address these questions, several promising hybrids and inbreds were exposed to control and high day-time temperature (HDT) in Experiment 1 and hybrids having contrasting heat tolerance were selected for Experiment 2 for further physiological investigation under high day and night temperature treatments...
January 15, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29335898/the-novel-transcription-factor-trp-interacts-with-zfp5-a-trichome-initiation-related-transcription-factor-and-negatively-regulates-trichome-initiation-through-gibberellic-acid-signaling
#14
Soo Youn Kim, Sujin Hyoung, Won Mi So, Jeong Sheop Shin
The trichome-related protein (TRP) is a novel transcription factor (TF) that negatively regulates trichome initiation-related TFs through gibberellin (GA) signaling. Trichomes, which are outgrowths of leaf epidermal cells, provide the plant with a first line of defense against damage from herbivores and reduce transpiration. The initiation and development of trichomes are regulated by a network of positively or negatively regulating transcription factors (TFs). However, little information is currently available on transcriptional regulation related to trichome formation...
January 16, 2018: Plant Molecular Biology
https://www.readbyqxmd.com/read/29335419/a-global-view-of-transcriptome-dynamics-during-male-floral-bud-development-in-populus-tomentosa
#15
Zhong Chen, Pian Rao, Xiaoyu Yang, Xiaoxing Su, Tianyun Zhao, Kai Gao, Xiong Yang, Xinmin An
To obtain a comprehensive overview of the dynamic transcriptome during male floral bud development in Populus tomentosa, high-throughput RNA-seq was conducted during eight flowering-related stages. Among the 109,212 de novo assembled unigenes, 6,959 were differentially expressed during the eight stages. The overrepresented classed of genes identified by Gene Ontology (GO) enrichment included 'response to environmental stimuli' and 'plant-type spore development'. One-third of the differentially expressed genes were transcription factors (TFs)...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29334916/influence-of-drought-stress-on-afalfa-yields-and-nutritional-composition
#16
Yinghao Liu, Qian Wu, Gentu Ge, Guodong Han, Yushan Jia
BACKGROUND: It is predicted that climate change may increase the risk of local droughts, with severe consequences for agricultural practices. METHODS: Here we report the influence of drought on alfalfa yields and nutritional composition, based on artificially induced drought conditions during two field experiments. Two types of alfalfa cultivars were compared, Gold Queen and Suntory. The severity and timing of drought periods were varied, and the crop was harvested either early during flowering, or late at full bloom...
January 15, 2018: BMC Plant Biology
https://www.readbyqxmd.com/read/29334238/chemical-constituents-from-the-flowers-of-satsuma-mandarin-and-their-free-radical-scavenging-and-%C3%AE-glucosidase-inhibitory-activities
#17
Anjana Adhikari-Devkota, Sara Mustafa Idris Elbashir, Takashi Watanabe, Hari Prasad Devkota
Flowers of Citrus plants are used as mild sedatives and for the treatment of insomnia in traditional medicines. In Japan, tea made from the flowers of Satsuma mandarin is consumed as healthy drink. Hesperidin (1), hesperetin (2), rutin (3), quercetin (4), nicotiflorin (5), eriocitrin (6), narirutin (7), phenylethyl glucoside (8) and unshuoside A (9) were isolated from the MeOH extract of fresh flowers. Structure elucidation of these compounds was performed on the basis of NMR spectroscopic data. Among them, rutin (3), quercetin (4) and eriocitrin (6) showed potent free radical scavenging activity, whereas hesperetin (2) and quercetin (4) showed potent α-glucosidase inhibitory activity...
January 15, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29333920/towards-a-psychology-of-sexual-health
#18
Poul Rohleder, Paul Flowers
No abstract text is available yet for this article.
February 2018: Journal of Health Psychology
https://www.readbyqxmd.com/read/29333047/assessment-of-nutritional-quality-and-global-antioxidant-response-of-banana-musa-sp-cv-nanjangud-rasa-bale-pseudostem-and-flower
#19
Ramith Ramu, Prithvi S Shirahatti, K R Anilakumar, Shivasharanappa Nayakavadi, Farhan Zameer, B L Dhananjaya, M N Nagendra Prasad
Background: The assessment of the nutritional composition and phytochemical screening of banana pseudostem (PB) and flower (FB) advocate this nonconventional food source for routine consumption, considering its various health benefits. Objectives: The aim is to assess the proximate nutrient composition, fatty acids, minerals, amino acid profile, and global antioxidant response (GAR) of PB and FB. Methods: Standard analytical procedures were used to determine the nutritional quality and GAR of PB and FB...
December 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/29332791/highly-sensitive-and-reproducible-non-enzymatic-glucose-sensor-fabricated-by-drop-casting-novel-nanocomposite-with-3d-architecture-and-tailorable-properties-prepared-in-controllable-way
#20
Min Ma, Taotao Zhe, Yiyue Ma, Zonghan Wang, Qiang Chen, Jianlong Wang
Novel nanocomposite has tailorable properties and ordered 3D architecture similar to the structure of materials prepared by electrodeposition which is convenient and efficient but the reproducibility is limited because of the uncontrollable preparation process, was scientifically synthetized in controllable way and used for non-enzymatic glucose sensor for the first time. Flower-like α-Ni(OH)2 with high specific surface areas and good anion transport ability benefited from its distinctive stacking faults and turbostratic disorder structure was synthesized through facile one-step hydrothermal method...
April 1, 2018: Talanta
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