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https://www.readbyqxmd.com/read/27933261/efficient-regeneration-system-from-rye-leaf-base-segments
#1
Kamil Haliloglu, Murat Aydin
Rye is second only to wheat among grains most widely used in the making of bread and is also a very important gene resource for breeding and improvement of wheat and other cereal crops owing to tolerance to abiotic stress factors such as low temperatures, drought and poor soil conditions. However, application of biotechnologies has been limited in rye breeding since it is one of the most recalcitrant species in tissue culture. A simple and fast regeneration system from leaf-base segment explant of rye was developed in this study...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27933088/comparison-of-ionomic-and-metabolites-response-under-alkali-stress-in-old-and-young-leaves-of-cotton-gossypium-hirsutum-l-seedlings
#2
Rui Guo, LianXuan Shi, ChunWu Yang, ChangRong Yan, XiuLi Zhong, Qi Liu, Xu Xia, HaoRu Li
Soil salinization is an important agriculture-related environmental problem. Alkali stress and salt stress strongly influence the metabolic balance in plants. Salt and alkali stresses exert varied effects on old and young tissues, which display different adaptive strategies. In this study, we used cotton (Gossypium hirsutum L.) plants as experimental material to investigate whether alkali stress induces ionic and metabolism changes in old and young leaves of cotton plants exposed to alkali stress. Results showed that alkali stress exerted a considerably stronger growth inhibition on old leaves than on young leaves...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27933079/small-rnas-from-bemisia-tabaci-are-transferred-to-solanum-lycopersicum-phloem-during-feeding
#3
Paula J M van Kleeff, Marc Galland, Robert C Schuurink, Petra M Bleeker
The phloem-feeding whitefly Bemisia tabaci is a serious pest to a broad range of host plants, including many economically important crops such as tomato. These insects serve as a vector for various devastating plant viruses. It is known that whiteflies are capable of manipulating host-defense responses, potentially mediated by effector molecules in the whitefly saliva. We hypothesized that, beside putative effector proteins, small RNAs (sRNA) are delivered by B. tabaci into the phloem, where they may play a role in manipulating host plant defenses...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27933075/a-non-specific-setaria-italica-lipid-transfer-protein-gene-plays-a-critical-role-under-abiotic-stress
#4
Yanlin Pan, Jianrui Li, Licong Jiao, Cong Li, Dengyun Zhu, Jingjuan Yu
Lipid transfer proteins (LTPs) are a class of cysteine-rich soluble proteins having small molecular weights. LTPs participate in flower and seed development, cuticular wax deposition, also play important roles in pathogen and abiotic stress responses. A non-specific LTP gene (SiLTP) was isolated from a foxtail millet (Setaria italica) suppression subtractive hybridization library enriched for differentially expressed genes after abiotic stress treatments. A semi-quantitative reverse transcriptase PCR analysis showed that SiLTP was expressed in all foxtail millet tissues...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27931714/host-plant-growth-promotion-and-cadmium-detoxification-in-solanum-nigrum-mediated-by-endophytic-fungi
#5
Abdur Rahim Khan, Ihsan Ullah, Muhammad Waqas, Gun-Seok Park, Abdul Latif Khan, Sung-Jun Hong, Rehman Ullah, Byung Kwon Jung, Chang Eon Park, Shafiq Ur-Rehman, In-Jung Lee, Jae-Ho Shin
Current investigation conducted to evaluate the associated fungal endophyte interactions of a Cd hyper-accumulator Solanum nigrum Korean ecotype under varying concentrations of Cd. Two indole-3-acetic acid (IAA) producing fungal strains, RSF-4L and RSF-6L, isolated from the leaves of S. nigrum, were initially screened for Cd tolerance and accumulation potential. In terms of dry biomass production, the strain RSF-6L showed higher tolerance and accumulation capacity for Cd toxicity in comparison to RSF-4L. Therefore, RSF-6L was applied in vivo to S...
February 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27930707/native-phytoremediation-potential-of-urtica-dioica-for-removal-of-pcbs-and-heavy-metals-can-be-improved-by-genetic-manipulations-using-constitutive-camv-35s-promoter
#6
Jitka Viktorova, Zuzana Jandova, Michaela Madlenakova, Petra Prouzova, Vilem Bartunek, Blanka Vrchotova, Petra Lovecka, Lucie Musilova, Tomas Macek
Although stinging nettle (Urtica dioica) has been shown to reduce HM (heavy metal) content in soil, its wider phytoremediation potential has been neglected. Urtica dioica was cultivated in soils contaminated with HMs or polychlorinated biphenyls (PCBs). After four months, up to 33% of the less chlorinated biphenyls and 8% of HMs (Zn, Pb, Cd) had been removed. Bacteria were isolated from the plant tissue, with the endophytic bacteria Bacillus shackletonii and Streptomyces badius shown to have the most significant effect...
2016: PloS One
https://www.readbyqxmd.com/read/27929655/quantitative-analysis-of-3-oh-oxylipins-in-fermentation-yeast
#7
Greg Potter, Wei Xia, Suzanne M Budge, R Alex Speers
Despite the ubiquitous distribution of oxylipins in plants, animals, and microbes, and the application of numerous analytical techniques to study these molecules, 3-OH oxylipins have never been quantitatively assayed in yeasts. The formation of heptafluorobutyrate methyl ester derivatives and subsequent analysis with gas chromatography - negative chemical ionization - mass spectrometry allowed for the first determination of yeast 3-OH oxylipins. The concentration of 3-OH 10:0 (0.68-4.82 ng/mg dry cell mass) in the SMA strain of Saccharomyces pastorianus grown in laboratory-scale beverage fermentations was elevated relative to oxylipin concentrations in plant tissues and macroalgae...
September 6, 2016: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/27929436/comparison-of-small-rna-profiles-of-glycine-max-and-glycine-soja-at-early-developmental-stages
#8
Yuzhe Sun, Zeta Mui, Xuan Liu, Aldrin Kay-Yuen Yim, Hao Qin, Fuk-Ling Wong, Ting-Fung Chan, Siu-Ming Yiu, Hon-Ming Lam, Boon Leong Lim
Small RNAs, including microRNAs (miRNAs) and phased small interfering RNAs (phasiRNAs; from PHAS loci), play key roles in plant development. Cultivated soybean, Glycine max, contributes a great deal to food production, but, compared to its wild kin, Glycine soja, it may lose some genetic information during domestication. In this work, we analyzed the sRNA profiles of different tissues in both cultivated (C08) and wild soybeans (W05) at three stages of development. A total of 443 known miRNAs and 15 novel miRNAs showed varying abundances between different samples, but the miRNA profiles were generally similar in both accessions...
December 6, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27929394/metabolism-of-ht-2-toxin-and-t-2-toxin-in-oats
#9
Jacqueline Meng-Reiterer, Christoph Bueschl, Justyna Rechthaler, Franz Berthiller, Marc Lemmens, Rainer Schuhmacher
The Fusarium mycotoxins HT-2 toxin (HT2) and T-2 toxin (T2) are frequent contaminants in oats. These toxins, but also their plant metabolites, may contribute to toxicological effects. This work describes the use of (13)C-assisted liquid chromatography-high-resolution mass spectrometry for the first comprehensive study on the biotransformation of HT2 and T2 in oats. Using this approach, 16 HT2 and 17 T2 metabolites were annotated including novel glycosylated and hydroxylated forms of the toxins, hydrolysis products, and conjugates with acetic acid, putative malic acid, malonic acid, and ferulic acid...
December 5, 2016: Toxins
https://www.readbyqxmd.com/read/27928690/from-shoot-to-leaf-step-wise-shifts-in-meristem-and-knox1-activity-correlate-with-the-evolution-of-a-unifoliate-body-plan-in-gesneriaceae
#10
Kanae Nishii, Bing-Hong Huang, Chun-Neng Wang, Michael Möller
Typical dicots possess equal-sized cotyledons and leaf-bearing shoots topped with a shoot apical meristem (SAM), the source of lateral organs, and where KNOX1 homeobox genes act as key regulators. New World Gesneriaceae show typical cotyledons, whereas Old World Gesneriaceae show anisocotyly, the unequal post-germination growth of cotyledons, and include unifoliate (one-leaf) plants. One-leaf plants show an extremely reduced body plan: the adult above-ground photosynthetic tissue consisting of a single cotyledon, a macrocotyledon enlarged by the basal meristem (BM), but lacking a SAM...
December 8, 2016: Development Genes and Evolution
https://www.readbyqxmd.com/read/27927918/coelomycetous-fungi-in-the-clinical-setting-morphological-convergence-and-cryptic-diversity
#11
Nicomedes Valenzuela-Lopez, Deanna A Sutton, José F Cano-Lira, Katihuska Paredes, Nathan Wiederhold, Josep Guarro, Alberto M Stchigel
Human infections by coelomycetous fungi are becoming more frequent and range from superficial to systemic dissemination. Traumatic implantation of contaminated plant material is the most common cause. The typical morphological feature of these fungi is the production of asexual spores (conidia) within fruiting bodies called conidiomata. This study aimed to determine the distribution of the coelomycetes in clinical samples by a phenotypic and molecular study of a large set of isolates received from a USA reference mycological institution and by obtaining the in vitro antifungal susceptibility pattern of a selected group of strains against nine antifungals...
December 7, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27927181/genome-wide-identification-phylogeny-and-expression-analysis-of-pectin-methylesterases-reveal-their-major-role-in-cotton-fiber-development
#12
Weijie Li, Haihong Shang, Qun Ge, Changsong Zou, Juan Cai, Daojie Wang, Senmiao Fan, Zhen Zhang, Xiaoying Deng, Yunna Tan, Weiwu Song, Pengtao Li, Palanga Kibalou Koffi, Muhammad Jamshed, Quanwei Lu, Wankui Gong, Junwen Li, Yuzhen Shi, Tingting Chen, Juwu Gong, Aiying Liu, Youlu Yuan
BACKGROUND: Pectin methylesterase (PME, EC 3.1.1.11) is a hydrolytic enzyme that utilizes pectin as substrates, and plays a significant role in regulating pectin reconstruction thereby regulating plant growth. Pectin is one of the important components of the plant cell wall, which forms the main structural material of cotton fiber. In this research, cotton genome information was used to identify PMEs. RESULTS: We identified 80 (GaPME01-GaPME80) PME genes from diploid G...
December 7, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27927068/beetroot-beta-vulgaris-rescues-mice-from-%C3%AE-ray-irradiation-by-accelerating-hematopoiesis-and-curtailing-immunosuppression
#13
Jinhee Cho, So Jin Bing, Areum Kim, Nam Ho Lee, Sang-Hee Byeon, Gi-Ok Kim, Youngheun Jee
CONTEXT: Beetroot [Beta vulgaris Linné (Chenopodiaceae)], a vegetable usually consumed as a food or a medicinal plant in Europe, has been reported to have antioxidant and anti-inflammatory properties. Since the lymphohematopoietic system is the most sensitive tissue to ionizing radiation, protecting it from radiation damage is one of the best ways to decrease detrimental effects from radiation exposure. OBJECTIVE: In this study, we evaluated the radio-protective effects of beetroot in hematopoietic stem cells (HSCs) and progenitor cells...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27925226/leaf-gas-films-contribute-to-rice-oryza-sativa-submergence-tolerance-during-saline-floods
#14
Max Herzog, Dennis Konnerup, Ole Pedersen, Anders Winkel, Timothy David Colmer
Floods and salinization of agricultural land adversely impact global rice production. We investigated whether gas films on leaves of submerged rice delay salt entry during saline submergence. Two-week-old plants with leaf gas films (+GF) or with gas films experimentally removed (-GF) were submerged in artificial floodwater with 0 or 50 mM NaCl for up to 16 d. Gas films were present > 9 d on + GF plants after which gas films were diminished. Tissue ion analysis (Na(+) , Cl(-) and K(+) ) showed that gas films caused some delay of Na(+) entry, as leaf Na(+) concentration was 36-42% higher in -GF leaves than + GF leaves on d 1-5...
December 7, 2016: Plant, Cell & Environment
https://www.readbyqxmd.com/read/27924923/genome-wide-analysis-of-phosphoenolpyruvate-carboxylase-gene-family-and-their-response-to-abiotic-stresses-in-soybean
#15
Ning Wang, Xiujuan Zhong, Yahui Cong, Tingting Wang, Songnan Yang, Yan Li, Junyi Gai
Phosphoenolpyruvate carboxylase (PEPC) plays an important role in assimilating atmospheric CO2 during C4 and crassulacean acid metabolism photosynthesis, and also participates in various non-photosynthetic processes, including fruit ripening, stomatal opening, supporting carbon-nitrogen interactions, seed formation and germination, and regulation of plant tolerance to stresses. However, a comprehensive analysis of PEPC family in Glycine max has not been reported. Here, a total of ten PEPC genes were identified in soybean and denominated as GmPEPC1-GmPEPC10...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924727/metabolomics-of-healthy-berry-fruits
#16
Gilda D Urso, Sonia Piacente, Cosimo Pizza, Paola Montoro
The consumption of berry-type fruits has become very popular in recent years because of their positive effects on human health. Berries are in fact widely known for their health-promoting benefits, including prevention of chronic disease, cardiovascular disease and cancer. Berries are a rich source of bioactive metabolites, such as vitamins, minerals, and phenolic compounds, mainly anthocyanins. Numerous in vitro and in vivo studies recognized the health effects of berries and their function as bioactive modulators of various cell functions associated with oxidative stress...
December 5, 2016: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/27923989/metabolic-control-of-tobacco-pollination-by-sugars-and-invertases
#17
Marc Goetz, Anne Guivarc'h, Jörg Hirsche, Martin Andreas Bauerfeind, María-Cruz González, Tae Kyung Hyun, Seung Hee Eom, Dominique Chriqui, Thomas Engelke, Dominik K Großkinsky, Thomas Roitsch
Pollination in flowering plants is initiated by germination of pollen grains on stigmas followed by fast growth of pollen tubes representing highly energy-consuming processes. The symplastic isolation of pollen grains and tubes requires import of sucrose available in the apoplast. We show that the functional coupling of sucrose cleavage by invertases and uptake of the released hexoses by monosaccharide transporters are critical for pollination in tobacco. Transcript profiling, in situ hybridization and immunolocalization of extracellular invertases and two monosaccharide transporters in vitro and in vivo support the functional coupling in supplying carbohydrates for pollen germination and tube growth evidenced by spatiotemporally coordinated expression...
December 6, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27923691/growth-inhibitory-effect-of-scrophularia-oxysepala-extract-on-mouse-mammary-carcinoma-4t1-cells-in-vitro-and-in-vivo-systems
#18
Pooneh Chokhachi Baradaran, Ali Mohammadi, Behzad Mansoori, Sepideh Chokhachi Baradaran, Behzad Baradaran
INTRODUCTION: Medical plants have been intensively studied as a source of antitumor compounds. In the present study, we determine the effect of Scrophularia oxysepala on triggering apoptosis and diminishing growth, size and weight of the tumor in the allograft model of Balb/c mice. MATERIAL & METHODS: The cytotoxic effects of Scrophularia oxysepala extract on 4T1 cells were studied using MTT (3-[4,5-dimethyl-2-thiazolyl]-2, 5 diphenyl tetrazolium bromide) assay and Trypan blue staining...
December 3, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27923651/a-cheap-simple-high-throughput-method-for-screening-native-helicobacter-pylori-urease-inhibitors-using-a-recombinant-escherichia-coli-its-validation-and-demonstration-of-pistacia-atlantica-methanolic-extract-effectivity-and-specificity
#19
Natalie Amar, Avi Peretz, Yoram Gerchman
Helicobacter pylori is the most frequent and persistent bacterial infection worldwide, and a risk factor for active gastritis, peptic ulcers, mucosa-associated lymphoid tissue lymphoma, and gastric cancer. Although combined antibiotics treatment is effective cases of antibiotic resistance are reported at an alarming rate. The H. pylori urease enzyme is essential for the bacteria establishment in the gastric mucosa, resulting urease inhibitors being sought after as effective and specific anti- H. pylori treatment...
December 3, 2016: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/27923613/an-arabidopsis-thaliana-receptor-dead-kinase1-rdk1-gene-functions-as-a-positive-regulator-in-plant-responses-to-aba
#20
Dhinesh Kumar, Ritesh Kumar, Dongwon Baek, Tae-Kyung Hyun, Woo Sik Chung, Dae-Jin Yun, Jae-Yean Kim
Abscisic acid (ABA) is a major phytohormone involved in important stress-related and developmental plant processes. Membrane-delimited ABA signal transduction plays an important role in early ABA signaling, but the molecular mechanisms connecting core signaling components to the plasma membrane (PM) are unclear. Plants have evolved a large number of receptor-like kinases (RLKs) to modulate diverse biological processes by perceiving extracellular stimuli and activating downstream signaling responses. Here, a putative leucine-rich repeat (LRR)-RLK gene named RECEPTOR DEAD KINASE1 (AtRDK1) was identified and characterized in Arabidopsis thaliana...
December 3, 2016: Molecular Plant
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