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https://www.readbyqxmd.com/read/27913905/proteins-immunologically-related-to-map65-1-accumulate-and-localize-differentially-during-bud-development-in-vitis-vinifera-l
#1
Luigi Parrotta, Claudia Faleri, Mauro Cresti, Giampiero Cai
Various arrays of microtubules are present throughout the plant cell cycle and are involved in distinct functions. Microtubule-associated proteins (MAPs) regulate microtubule dynamics by acting as stabilizers, destabilizers, and promoters of microtubule dynamics. The MAP65 family is a specific group of cross-linkers required for structural maintenance of microtubules. In plants, different isoforms of MAP65 are differentially expressed according to their developmental program. In this work, we analyzed the differential distribution of proteins immunologically related to MAP65-1 during bud development in grapevine (Vitis vinifera L...
December 2, 2016: Protoplasma
https://www.readbyqxmd.com/read/27913751/new-fungal-defensin-like-peptides-provide-evidence-for-fold-change-of-proteins-in-evolution
#2
Yucheng Wu, Bin Gao, Shunyi Zhu
Defensins containing a consensus cystine framework, Cys[1]..Cys[2]X3Cys[3]..Cys[4]..Cys[5]X1Cys[6] ("X", any amino acids normally except Cys; "...", variable residue numbers), are extensively distributed in a variety of multicellular organisms (plants, fungi and invertebrates) and essentially involved in immunity as microbicidal agents. This framework is a prerequisite for forming a cystine-stabilized α-helix and β-sheet (CSαβ) fold, in which the two invariant motifs, Cys[2]X3Cys[3]/Cys[5]X1Cys[6], are key determinants of fold formation...
December 2, 2016: Bioscience Reports
https://www.readbyqxmd.com/read/27913740/a-%C3%AE-ketoacyl-coa-synthase-is-involved-in-rice-leaf-cuticular-wax-synthesis-and-requires-a-cer2-like-protein-as-a-cofactor
#3
Xiaochen Wang, Yuanyuan Guan, Du Zhang, Xiangbai Dong, Lihong Tian, Le Qing Qu
Cuticular waxes are complex mixtures of very-long-chain fatty acids (VLCFAs) and their derivatives, forming a natural barrier on aerial surfaces of terrestrial plants against biotic and abiotic stresses. In VLCFA biosynthesis, β-ketoacyl-CoA synthase (KCS) is the key enzyme, catalyzing the first reaction in fatty acid elongation and determining substrate specificity. We isolated a rice (Oryza sativa L.) wax crystal-sparse leaf 4 (WSL4) gene using a map-based cloning strategy. WSL4 is predicted to encode a KCS, a homolog of Arabidopsis CER6...
December 2, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27913733/identification-of-2-methylthio-cyclic-n6-threonylcarbamoyladenosine-ms2ct6a-as-a-novel-rna-modification-at-position-37-of-trnas
#4
Byeong-Il Kang, Kenjyo Miyauchi, Michal Matuszewski, Gabriel Silveira D'Almeida, Mary Anne T Rubio, Juan D Alfonzo, Kazuki Inoue, Yuriko Sakaguchi, Takeo Suzuki, Elzbieta Sochacka, Tsutomu Suzuki
Transfer RNA modifications play pivotal roles in protein synthesis. N(6)-threonylcarbamoyladenosine (t(6)A) and its derivatives are modifications found at position 37, 3'-adjacent to the anticodon, in tRNAs responsible for ANN codons. These modifications are universally conserved in all domains of life. t(6)A and its derivatives have pleiotropic functions in protein synthesis including aminoacylation, decoding and translocation. We previously discovered a cyclic form of t(6)A (ct(6)A) as a chemically labile derivative of t(6)A in tRNAs from bacteria, fungi, plants and protists...
December 2, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27913732/a-hydantoin-isoform-of-cyclic-n6-threonylcarbamoyladenosine-ct6a-is-present-in-trnas
#5
Michal Matuszewski, Jakub Wojciechowski, Kenjyo Miyauchi, Zofia Gdaniec, Wojciech M Wolf, Tsutomu Suzuki, Elzbieta Sochacka
N(6)-Threonylcarbamoyladenosine (t(6)A) and its derivatives are universally conserved modified nucleosides found at position 37, 3' adjacent to the anticodon in tRNAs responsible for ANN codons. These modifications have pleiotropic functions of tRNAs in decoding and protein synthesis. In certain species of bacteria, fungi, plants and protists, t(6)A is further modified to the cyclic t(6)A (ct(6)A) via dehydration catalyzed by TcdA. This additional modification is involved in efficient decoding of tRNA(Lys) Previous work indicated that the chemical structure of ct(6)A is a cyclic active ester with an oxazolone ring...
December 2, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27913282/proteomics-provides-insights-into-biological-pathways-altered-by-plant-growth-promoting-bacteria-and-arbuscular-mycorrhiza-in-sorghum-grown-in-marginal-soil
#6
Faten Dhawi, Rupali Datta, Wusirika Ramakrishna
Sorghum is an economically important crop, a model system for gene discovery and a biofuel source. Sorghum seedlings were subjected to three microbial treatments, plant growth promoting bacteria (B), arbuscular mycorrhizal (AM) fungi mix with two Glomus species (G. aggregatum and G. etunicatum), Funelliformis mosseae and Rhizophagus irregularis (My), and B and My combined (My+B). Proteomic analysis was conducted followed by integration with metabolite, plant biomass and nutrient data. Out of 366 differentially expressed proteins in sorghum roots, 44 upregulated proteins overlapping among three treatment groups showed positive correlation with sorghum biomass or element uptake or both...
November 29, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27912886/medicinal-plants-and-natural-molecules-with-in-vitro-and-in-vivo-activity-against-rotavirus-a-systematic-review
#7
REVIEW
Gopalsamy Rajiv Gandhi, Paula Gurgel Barreto, Bruno Dos Santos Lima, Jullyana de Souza Siqueira Quintans, Adriano Antunes de Souza Araújo, Narendra Narain, Lucindo Jose Quintans-Júnior, Ricardo Queiroz Gurgel
BACKGROUND: Rotaviruses can cause life-threatening health disorders, such as severe dehydrating gastroenteritis and diarrhea in children. Vaccination is the main preventive strategy to reduce rotavirus diarrhea and the severity of episodes, but vaccines are not fully effective and new episodes may occur, even in vaccinated children. The WHO recommends oral rehydration therapy and zinc supplementation for rotavirus-induced diarrhea management. There is little preclinical evidence to support the use of phytotherapeutics in the management of rotaviral infections...
December 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27912879/how-do-the-alkaloids-emetine-and-homoharringtonine-kill-trypanosomes-an-insight-into-their-molecular-modes-of-action
#8
Sonja Krstin, Tamer Mohamed, Xiaojuan Wang, Michael Wink
BACKGROUND: Although Trypanosoma brucei causes deadly sleeping sickness, the number of the registered medications is rather limited. Some plant alkaloids are potent trypanocidal agents. PURPOSE: In this study, we wanted to elucidate the molecular modes of trypanocidal activity of the alkaloids emetine and homoharringtonine against Trypanosoma brucei brucei. METHODS: We investigated the activity of both alkaloids regarding growth recovery from alkaloid-induced stress...
December 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27912872/anti-allergic-potential-of-typhonium-blumei-inhibition-of-degranulation-via-suppression-of-pi3k-plc%C3%AE-2-phosphorylation-and-calcium-influx
#9
Michal Korinek, Kuan-Ming Chen, Yu-Han Jiang, Mohamed El-Shazly, Joel Stocker, Chon-Kit Chou, Tsong-Long Hwang, Yang-Chang Wu, Bing-Hung Chen, Fang-Rong Chang
BACKGROUND: Typhonium blumei Nicolson & Sivadasan (Araceae) is a traditional Chinese medicinal herb possessing detumescent, detoxifying, and anti-inflammatory activities. It is used in Taiwan as a folk medicine to treat cancer and inflammatory diseases. Typhonium blumei is usually not distinguished from Typhonium roxburghii Schott and they are commonly used interchangeably. PURPOSE: To evaluate and compare the anti-allergic and anti-inflammatory properties of T...
December 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27912765/rna-seq-based-digital-gene-expression-analysis-reveals-modification-of-host-defense-responses-by-rice-stripe-virus-during-disease-symptom-development-in-arabidopsis
#10
Feng Sun, Peng Fang, Juan Li, Linlin Du, Ying Lan, Tong Zhou, Yongjian Fan, Wenbiao Shen, Yijun Zhou
BACKGROUND: Virus infection induces and suppresses host gene expression on a global level. Rice stripe virus (RSV) is the type species of the genus Tenuivirus and infects rice and Arabidopsis plants. Microarray-based and next generation sequencing-based transcriptomic approaches have been used to study rice-RSV interactions. However, our knowledge of the response of Arabidopsis plants to RSV infection is limited, and it requires further investigation to determine the similarities (or differences) in virus-host interactions between monocot and dicot hosts infected with RSV...
December 2, 2016: Virology Journal
https://www.readbyqxmd.com/read/27912150/calea-uniflora-less-attenuates-the-inflammatory-response-to-carrageenan-induced-pleurisy-in-mice
#11
Julia Salvan da Rosa, Silvana Virginia Gagliotti Vigil de Mello, Geison Vicente, Yeo Jim K Moon, Felipe Perozzo Daltoé, Tamires Cardoso Lima, Rafaela de Jesus Souza, Maique Weber Biavatti, Tânia Silvia Fröde
Calea uniflora Less. (family Asteraceae), also named "arnica" and "erva-de-lagarto", is a native plant to the South and Southeast of Brazil. This species was used to treat rheumatism, respiratory diseases, and digestive problems in Brazilian folk medicine. In vitro studies have shown the important biological effects of C. uniflora. However no studies have focused on the mechanism of action of anti-inflammatory activity of C. uniflora. The aim of this study was to evaluate the anti-inflammatory effects of the crude extract, its fractions, and isolated compounds obtained from of C...
November 29, 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27912029/how-to-establish-a-bioregenerative-life-support-system-for-long-term-crewed-missions-to-the-moon-or-mars
#12
Yuming Fu, Leyuan Li, Beizhen Xie, Chen Dong, Mingjuan Wang, Boyang Jia, Lingzhi Shao, Yingying Dong, Shengda Deng, Hui Liu, Guanghui Liu, Bojie Liu, Dawei Hu, Hong Liu
To conduct crewed simulation experiments of bioregenerative life support systems on the ground is a critical step for human life support in deep-space exploration. An artificial closed ecosystem named Lunar Palace 1 was built through integrating efficient higher plant cultivation, animal protein production, urine nitrogen recycling, and bioconversion of solid waste. Subsequently, a 105-day, multicrew, closed integrative bioregenerative life support systems experiment in Lunar Palace 1 was carried out from February through May 2014...
December 2, 2016: Astrobiology
https://www.readbyqxmd.com/read/27911925/attenuation-of-quorum-sensing-regulated-virulence-of-pectobacterium-carotovorum-subsp-carotovorum-through-an-ahl-lactonase-produced-by-lysinibacillus-sp-gs50
#13
Sneha S Garge, Anuradha S Nerurkar
Quorum sensing (QS) is a mechanism in which Gram negative bacterial pathogens sense their population density through acyl homoserine lactones (AHLs) and regulate the expression of virulence factors. Enzymatic degradation of AHLs by lactonases, known as quorum quenching (QQ), is thus a potential strategy for attenuating QS regulated bacterial infections. We characterised the QQ activity of soil isolate Lysinibacillus sp. Gs50 and explored its potential for controlling bacterial soft rot of crop plants. Lysinibacillus sp...
2016: PloS One
https://www.readbyqxmd.com/read/27911737/the-conservation-of-phosphate-binding-residues-among-pht1-transporters-suggests-that-distinct-transport-affinities-are-unlikely-to-result-from-differences-in-the-phosphate-binding-site
#14
REVIEW
S Antony Ceasar, Alison Baker, Stephen P Muench, S Ignacimuthu, Stephen A Baldwin
The plant PHosphate Transporter 1 (PHT1) family of membrane proteins belongs to the major facilitator super family and plays a major role in the acquisition of inorganic phosphate (Pi) from the soil and its transport within the plant. These transporters have been well characterized for expression patterns, localization, and in some cases affinity. Furthermore, the crystal structure of a high-affinity eukaryotic phosphate transporter from the fungus Piriformospora indica (PiPT) has revealed important information on the residues involved in Pi transport...
October 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27911469/comprehensive-identification-and-clustering-of-clv3-esr-related-cle-genes-in-plants-finds-groups-with%C3%A2-potentially-shared-function
#15
David M Goad, Chuanmei Zhu, Elizabeth A Kellogg
CLV3/ESR (CLE) proteins are important signaling peptides in plants. The short CLE peptide (12-13 amino acids) is cleaved from a larger pre-propeptide and functions as an extracellular ligand. The CLE family is large and has resisted attempts at classification because the CLE domain is too short for reliable phylogenetic analysis and the pre-propeptide is too variable. We used a model-based search for CLE domains from 57 plant genomes and used the entire pre-propeptide for comprehensive clustering analysis. In total, 1628 CLE genes were identified in land plants, with none recognizable from green algae...
December 1, 2016: New Phytologist
https://www.readbyqxmd.com/read/27911415/extraction-of-plant-based-capsules-for-microencapsulation-applications
#16
Michael G Potroz, Raghavendra C Mundargi, Jae Hyeon Park, Ee-Lin Tan, Nam-Joon Cho
Microcapsules derived from plant-based spores or pollen provide a robust platform for a diverse range of microencapsulation applications. Sporopollenin exine capsules (SECs) are obtained when spores or pollen are processed so as to remove the internal sporoplasmic contents. The resulting hollow microcapsules exhibit a high degree of micromeritic uniformity and retain intricate microstructural features related to the particular plant species. Herein, we demonstrate a streamlined process for the production of SECs from Lycopodium clavatum spores and for the loading of hydrophilic compounds into these SECs...
November 9, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911400/visualizing-stromule-frequency-with-fluorescence-microscopy
#17
Jacob O Brunkard, Anne M Runkel, Patricia Zambryski
Stromules, or "stroma-filled tubules", are narrow, tubular extensions from the surface of the chloroplast that are universally observed in plant cells but whose functions remain mysterious. Alongside growing attention on the role of chloroplasts in coordinating plant responses to stress, interest in stromules and their relationship to chloroplast signaling dynamics has increased in recent years, aided by advances in fluorescence microscopy and protein fluorophores that allow for rapid, accurate visualization of stromule dynamics...
November 23, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27910910/genome-wide-characterisation-and-expression-profile-of-the-grapevine-atl-ubiquitin-ligase-family-reveal-biotic-and-abiotic-stress-responsive-and-development-related-members
#18
Pietro Ariani, Alice Regaiolo, Arianna Lovato, Alejandro Giorgetti, Andrea Porceddu, Salvatore Camiolo, Darren Wong, Simone Castellarin, Elodie Vandelle, Annalisa Polverari
The Arabidopsis Tóxicos en Levadura (ATL) protein family is a class of E3 ubiquitin ligases with a characteristic RING-H2 Zn-finger structure that mediates diverse physiological processes and stress responses in plants. We carried out a genome-wide survey of grapevine (Vitis vinifera L.) ATL genes and retrieved 96 sequences containing the canonical ATL RING-H2 domain. We analysed their genomic organisation, gene structure and evolution, protein domains and phylogenetic relationships. Clustering revealed several clades, as already reported in Arabidopsis thaliana and rice (Oryza sativa), with an expanded subgroup of grapevine-specific genes...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910002/the-rice-pentatricopeptide-repeat-gene-tcd10-is-needed-for-chloroplast-development-under-cold-stress
#19
Lanlan Wu, Jun Wu, Yanxia Liu, Xiaodi Gong, Jianlong Xu, Dongzhi Lin, Yanjun Dong
BACKGROUND: Chloroplast plays a vital role in plant development and growth. The pentatricopeptide repeat (PPR) gene family is one of the largest gene families in plants. In addition, cold stress affects a broad spectrum of cellular components, e.g. chloroplast, and metabolism in plants. However, the regulatory mechanism for rice PPR genes on chloroplast development still remains elusive under cold stress. RESULT: In this paper, we characterized a new rice PPR gene mutant tcd10 (thermo-sensitive chlorophyll-deficient mutant 10) that exhibits the albino phenotype, malformed chloroplast and could not survive after the 5-leaf stage when grown at 20 °C, but does the normal phenotype at 32 °C...
December 2016: Rice
https://www.readbyqxmd.com/read/27909970/over-expression-of-mir158-causes-pollen-abortion-in-brassica-campestris-ssp-chinensis
#20
Zhiming Ma, Jianxia Jiang, Ziwei Hu, Tianqi Lyu, Yang Yang, Jingjing Jiang, Jiashu Cao
We identified and cloned the two precursors of miR158 and its target gene in Brassica campestris ssp. chinensis, which both had high relative expression in the inflorescences. Further study revealed that over-expression of miR158 caused reduced pollen varbility, which was caused by the degradation of pollen contents from the binucleate microspore stage. These results first suggest the role of miR158 in pollen development of Brassica campestris ssp. chinensis. MicroRNAs (miRNAs) play crucial roles in many important growth and development processes both in plants and animals by regulating the expression of their target genes via mRNA cleavage or translational repression...
December 1, 2016: Plant Molecular Biology
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