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https://www.readbyqxmd.com/read/28346745/emp10-encodes-a-mitochondrial-ppr-protein-that-affects-the-cis-splicing-of-nad2-intron-1-and-seed-development-in-maize
#1
Manjun Cai, L Shuzhen, Feng Sun, Qin Sun, Hailiang Zhao, Xuemei Ren, Yanxin Zhao, Baocai Tan, Zuxin Zhang, Fazhan Qiu
In higher plants, many mitochondrial genes contain group II-type introns that are removed from RNAs by splicing to produce mature transcripts that are then translated into functional proteins. However, the factors involved in the splicing of mitochondrial introns and their biological functions are not well understood in maize. Here, we isolated an empty pericarp 10 (emp10) mutant and identified the underlying gene by map-based cloning. Emp10 encodes a P-type mitochondria-targeted pentatricopeptide repeat (PPR) protein with 10 PPR motifs...
March 27, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28346704/the-chloroplast-rna-helicase-ise2-is-required-for-multiple-chloroplast-rna-processing-steps-in-arabidopsis-thaliana
#2
Krzysztof Bobik, Tyra N McCray, Ben Ernest, Jessica C Fernandez, Katharine A Howell, Thomas Lane, Margaret Staton, Tessa M Burch-Smith
INCREASED SIZE EXCLUSION LIMIT2 (ISE2) is a chloroplast-localized RNA helicase that is indispensable for proper plant development. Chloroplasts in leaves with reduced ISE2 expression have previously been shown to exhibit reduced thylakoid contents and increased stromal volume, indicative of defective development. It has recently been reported that ISE2 is required for the splicing of group II introns from chloroplast transcripts. The current study extends these findings, and presents evidence for ISE2's role in multiple aspects of chloroplast RNA processing beyond group II intron splicing...
March 27, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28346507/olive-oil-bioactives-protect-pigs-against-experimentally-induced-chronic-inflammation-independently-of-alterations-in-gut-microbiota
#3
Martin Liehr, Alessandro Mereu, Jose Javier Pastor, Jose Carlos Quintela, Stefanie Staats, Gerald Rimbach, Ignacio Rodolfo Ipharraguerre
Subclinical chronic inflammation (SCI) is associated with impaired animal growth. Previous work has demonstrated that olive-derived plant bioactives exhibit anti-inflammatory properties that could possibly counteract the growth-depressing effects of SCI. To test this hypothesis and define the underlying mechanism, we conducted a 30-day study in which piglets fed an olive-oil bioactive extract (OBE) and their control counterparts (C+) were injected repeatedly during the last 10 days of the study with increasing doses of Escherichia coli lipopolysaccharides (LPS) to induce SCI...
2017: PloS One
https://www.readbyqxmd.com/read/28346345/unconventional-transport-routes-of-soluble-and-membrane-proteins-and-their-role-in-developmental-biology
#4
Andrea Pompa, Francesca De Marchis, Maria Teresa Pallotta, Yoselin Benitez-Alfonso, Alexandra Jones, Kerstin Schipper, Kevin Moreau, Viktor Žárský, Gian Pietro Di Sansebastiano, Michele Bellucci
Many proteins and cargoes in eukaryotic cells are secreted through the conventional secretory pathway that brings proteins and membranes from the endoplasmic reticulum to the plasma membrane, passing through various cell compartments, and then the extracellular space. The recent identification of an increasing number of leaderless secreted proteins bypassing the Golgi apparatus unveiled the existence of alternative protein secretion pathways. Moreover, other unconventional routes for secretion of soluble or transmembrane proteins with initial endoplasmic reticulum localization were identified...
March 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28345963/accumulation-and-speciation-of-cd-in-avicennia-marina-tissues
#5
Li Jian, Yan Chongling, Du Daolin, Lu Haoliang, Liu Jingchun
Avicennia marina is a high Cd tolerant species in the mangrove wetlands. A hydroponic experiment was carried out to research the accumulation and chemical form distribution of Cd in the tissues of A. marina under different concentration and time of Cd stress. It was found that the concentrations of Cd in plant tissues followed the order of root> stem>leaf. The data suggested that root activity decreased, Cd accumulation ability weakened in roots and the Translocation Factor increased in stems and leaves with the increase of stress time...
March 27, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28345874/delivery-of-pesticides-to-plant-parasitic-nematodes-using-tobacco-mild-green-mosaic-virus-as-a-nanocarrier
#6
Paul L Chariou, Nicole F Steinmetz
Plant parasitic nematodes are a major burden to the global agricultural industry, causing a $157 billion loss each year in crop production worldwide. Effective treatment requires large doses of nematicides to be applied, putting the environment and human health at risk. Challenges are to treat nematodes that are located deep within the soil, feeding on the roots of plants. To attack the problem at its roots, we propose the use of tobacco mild green mosaic virus (TMGMV), an EPA-approved herbicide as a carrier to deliver nematicides...
March 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28345654/the-soybean-gmsnap18-gene-underlies-two-types-of-resistance-to-soybean-cyst-nematode
#7
Shiming Liu, Pramod K Kandoth, Naoufal Lakhssassi, Jingwen Kang, Vincent Colantonio, Robert Heinz, Greg Yeckel, Zhou Zhou, Sadia Bekal, Johannes Dapprich, Bjorn Rotter, Silvia Cianzio, Melissa G Mitchum, Khalid Meksem
Two types of resistant soybean (Glycine max (L.) Merr.) sources are widely used against soybean cyst nematode (SCN, Heterodera glycines Ichinohe). These include Peking-type soybean, whose resistance requires both the rhg1-a and Rhg4 alleles, and PI 88788-type soybean, whose resistance requires only the rhg1-b allele. Multiple copy number of PI 88788-type GmSNAP18, GmAAT, and GmWI12 in one genomic segment simultaneously contribute to rhg1-b resistance. Using an integrated set of genetic and genomic approaches, we demonstrate that the rhg1-a Peking-type GmSNAP18 is sufficient for resistance to SCN in combination with Rhg4...
March 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28345459/n6-isopentenyladenosine-promoted-hela-cell-apoptosis-through-inhibitions-of-akt-and-transforming-growth-factor-%C3%AE-activated-kinase-1-activation
#8
Miao Li, Yonghao Qi, Jing Wei, Lulu Lu, Xuan Zhao, Lijun Zhou
N6-Isopentenyladenosine, a member of the family of plant hormones, possesses anti-cancer activities on a number of cancer cell lines. However, its mode of action in cervical cancer cell remains poorly understood. Our computational docking studies showed that N6-Isopentenyladenosine could bind with the really interesting new gene domain of tumor necrosis factor receptor-associated factor 6, which is an ubiquitination E3 ligase. Tumor necrosis factor receptor-associated factor 6-mediated ubiquitination is known to activate both protein kinase B (also known as AKT) and transforming growth factor β-activated kinase 1, and the really interesting new gene domain comprises the core of the ubiquitin ligase catalytic domain...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28345032/agrobacterium-delivers-vire2-protein-into-host-cells-via-clathrin-mediated-endocytosis
#9
Xiaoyang Li, Shen Q Pan
Agrobacterium tumefaciens can cause crown gall tumors on a wide range of host plants. As a natural genetic engineer, the bacterium can transfer both single-stranded DNA (ssDNA) [transferred DNA (T-DNA)] molecules and bacterial virulence proteins into various recipient cells. Among Agrobacterium-delivered proteins, VirE2 is an ssDNA binding protein that is involved in various steps of the transformation process. However, it is not clear how plant cells receive the T-DNA or protein molecules. Using a split-green fluorescent protein approach, we monitored the VirE2 delivery process inside plant cells in real time...
March 2017: Science Advances
https://www.readbyqxmd.com/read/28344649/overexpression-of-a-domain-of-unknown-function-266-containing-protein-results-in-high-cellulose-content-reduced-recalcitrance-and-enhanced-plant-growth-in-the-bioenergy-crop-populus
#10
Yongil Yang, Chang Geun Yoo, Hao-Bo Guo, William Rottmann, Kimberly A Winkeler, Cassandra M Collins, Lee E Gunter, Sara S Jawdy, Xiaohan Yang, Hong Guo, Yunqiao Pu, Arthur J Ragauskas, Gerald A Tuskan, Jin-Gui Chen
BACKGROUND: Domain of Unknown Function 266 (DUF266) is a plant-specific domain. DUF266-containing proteins (DUF266 proteins) have been categorized as 'not classified glycosyltransferases (GTnc)' due to amino acid similarity with GTs. However, little is known about the function of DUF266 proteins. RESULTS: Phylogenetic analysis revealed that DUF266 proteins are only present in the land plants including moss and lycophyte. We report the functional characterization of one member of DUF266 proteins in Populus, PdDUF266A...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28344590/proteome-profiling-of-paulownia-seedlings-infected-with-phytoplasma
#11
Xibing Cao, Guoqiang Fan, Yanpeng Dong, Zhenli Zhao, Minjie Deng, Zhe Wang, Wenshan Liu
Phytoplasma is an insect-transmitted pathogen that causes witches' broom disease in many plants. Paulownia witches' broom is one of the most destructive diseases threatening Paulownia production. The molecular mechanisms associated with this disease have been investigated by transcriptome sequencing, but changes in protein abundance have not been investigated with isobaric tags for relative and absolute quantitation. Previous results have shown that methyl methane sulfonate (MMS) can help Paulownia seedlings recover from the symptoms of witches' broom and reinstate a healthy morphology...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28344588/atlsg1-2-regulates-leaf-growth-by-affecting-cell-proliferation-and-the-onset-of-endoreduplication-and-synergistically-interacts-with-atnmd3-during-cell-proliferation-process
#12
Huayan Zhao, Shiyou Lü, Liming Xiong
AtLSG1-2 is a circularly permuted GTPase required for ribosome biogenesis and recently shown to be involved in early leaf development, although it was unclear how AtLSG1-2 affects leaf growth. Here, we found that atlsg1-2 mutants had reduced leaf size as a result of decreased cell size and cell number. Leaf kinematic analysis and CYCB1;1::GUS expression pattern in atlsg1-2 mutant indicated that loss of function of AtLSG1-2 delays the transition from cell division to cell expansion. Decreases in ploidy levels and trichome branch number suggest that AtLSG1-2 deficiency suppresses endoreduplication...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28344587/the-chloroplast-genome-of-passiflora-edulis-passifloraceae-assembled-from-long-sequence-reads-structural-organization-and-phylogenomic-studies-in-malpighiales
#13
Luiz A Cauz-Santos, Carla F Munhoz, Nathalie Rodde, Stephane Cauet, Anselmo A Santos, Helen A Penha, Marcelo C Dornelas, Alessandro M Varani, Giancarlo C X Oliveira, Hélène Bergès, Maria Lucia C Vieira
The family Passifloraceae consists of some 700 species classified in around 16 genera. Almost all its members belong to the genus Passiflora. In Brazil, the yellow passion fruit (Passiflora edulis) is of considerable economic importance, both for juice production and consumption as fresh fruit. The availability of chloroplast genomes (cp genomes) and their sequence comparisons has led to a better understanding of the evolutionary relationships within plant taxa. In this study, we obtained the complete nucleotide sequence of the P...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28344584/lanthanum-affects-bell-pepper-seedling-quality-depending-on-the-genotype-and-time-of-exposure-by-differentially-modifying-plant-height-stem-diameter-and-concentrations-of-chlorophylls-sugars-amino-acids-and-proteins
#14
Atonaltzin García-Jiménez, Fernando C Gómez-Merino, Olga Tejeda-Sartorius, Libia I Trejo-Téllez
Lanthanum (La) is considered a beneficial element, capable of inducing hormesis. Hormesis is a dose-response relationship phenomenon characterized by low-dose stimulation and high-dose inhibition. Herein we tested the effect of 0 and 10 μM La on growth and biomolecule concentrations of seedlings of four sweet bell pepper (Capsicum annuum L.) varieties, namely Sven, Sympathy, Yolo Wonder, and Zidenka. Seedling evaluations were performed 15 and 30 days after treatment applications (dat) under hydroponic greenhouse conditions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28344583/rbm25-mediates-abiotic-responses-in-plants
#15
Chunhong Cheng, Zhijuan Wang, Bingjian Yuan, Xia Li
Alternative splicing (AS) of pre-mRNAs is one of the most important post-transcriptional regulations that enable a single gene to code for multiple proteins resulting in the biodiversity of proteins in eukaryotes. Recently, we have shown that an Arabidopsis thaliana RNA recognition motif-containing protein RBM25 is a novel splicing factor to modulate plant response to ABA during seed germination and post-germination through regulating HAB1 pre-mRNA AS. Here, we show that RBM25 is preferentially expressed in stomata and vascular tissues in Arabidopsis and is induced by ABA and abiotic stresses...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28344571/translation-initiation-factor-eif4e-and-eifiso4e-are-both-required-for-peanut-stripe-virus-infection-in-peanut-arachis-hypogaea-l
#16
Manlin Xu, Hongfeng Xie, Juxiang Wu, Lianhui Xie, Jinguang Yang, Yucheng Chi
Peanut stripe virus (PStV) belongs to the genus Potyvirus and is the most important viral pathogen of cultivated peanut (Arachis hypogaea L.). The eukaryotic translation initiation factor, eIF4E, and its isoform, eIF(iso)4E, play key roles during virus infection in plants, particularly Potyvirus. In the present study, we cloned the eIF4E and eIF(iso)4E homologs in peanut and named these as PeaeIF4E and PeaeIF(iso)4E, respectively. Quantitative real-time PCR (qRT-PCR) analysis showed that these two genes were expressed during all growth periods and in all peanut organs, but were especially abundant in young leaves and roots...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28344560/nitric-oxide-has-a-concentration-dependent-effect-on-the-cell-cycle-acting-via-ein2-in-arabidopsis-thaliana-cultured-cells
#17
Galina V Novikova, Luis A J Mur, Alexander V Nosov, Artem A Fomenkov, Kirill S Mironov, Anna S Mamaeva, Evgeny S Shilov, Victor Y Rakitin, Michael A Hall
Ethylene is known to influence the cell cycle (CC) via poorly characterized roles whilst nitric oxide (NO) has well-established roles in the animal CC but analogous role(s) have not been reported for plants. As NO and ethylene signaling events often interact we examined their role in CC in cultured cells derived from Arabidopsis thaliana wild-type (Col-0) plants and from ethylene-insensitive mutant ein2-1 plants. Both NO and ethylene were produced mainly during the first 5 days of the sub-cultivation period corresponding to the period of active cell division...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28344081/plasma-membrane-crpk1-mediated-phosphorylation-of-14-3-3-proteins-induces-their-nuclear-import-to-fine-tune-cbf-signaling-during-cold-response
#18
Ziyan Liu, Yuxin Jia, Yanglin Ding, Yiting Shi, Zhen Li, Yan Guo, Zhizhong Gong, Shuhua Yang
In plant cells, changes in fluidity of the plasma membrane may serve as the primary sensor of cold stress; however, the precise mechanism and how the cell transduces and fine-tunes cold signals remain elusive. Here we show that the cold-activated plasma membrane protein cold-responsive protein kinase 1 (CRPK1) phosphorylates 14-3-3 proteins. The phosphorylated 14-3-3 proteins shuttle from the cytosol to the nucleus, where they interact with and destabilize the key cold-responsive C-repeat-binding factor (CBF) proteins...
March 21, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28344069/selective-post-training-time-window-for-memory-consolidation-interference-of-cannabidiol-into-the-prefrontal-cortex-reduced-dopaminergic-modulation-and-immediate-gene-expression-in-limbic-circuits
#19
Matheus Teixeira Rossignoli, Cleiton Lopes-Aguiar, Rafael Naime Ruggiero, Raquel Araujo Do Val da Silva, Lezio Soares Bueno-Junior, Ludmyla Kandratavicius, José Eduardo Peixoto-Santos, José Alexandre Crippa, Jaime Eduardo Cecilio Hallak, Antonio Waldo Zuardi, Raphael Escorsim Szawka, Janete Anselmo-Franci, João Pereira Leite, Rodrigo Neves Romcy-Pereira
The prefrontal cortex (PFC), amygdala and hippocampus display a coordinated activity during acquisition of associative fear memories. Evidence indicates that PFC engagement in aversive memory formation does not progress linearly as previously thought. Instead, it seems to be recruited at specific time windows after memory acquisition, which has implications for the treatment of post-traumatic stress disorders. Cannabidiol (CBD), the major non-psychotomimetic phytocannabinoid of the Cannabis sativa plant, is known to modulate contextual fear memory acquisition in rodents...
March 23, 2017: Neuroscience
https://www.readbyqxmd.com/read/28343996/optimization-of-overexpression-of-a-chaperone-protein-of-steroid-c25-dehydrogenase-for-biochemical-and-biophysical-characterization
#20
Ewa Niedzialkowska, Beata Mrugała, Agnieszka Rugor, Mateusz P Czub, Anna Skotnicka, Julien J H Cotelesage, Graham N George, Maciej Szaleniec, Wladek Minor, Krzysztof Lewiński
Molybdenum is an essential nutrient for plant, bacteria and animal metabolism. Molybdoenzymes are involved in nitrogen assimilation and oxidoreductive, detoxification and bioconversion reactions of environmental, industrial, and pharmaceutical interest. Molybdoenzymes contain a molybdenum cofactor (Moco) which is a pyranopterin heterocyclic compound that binds a molybdenum atom via a dithiolene group. Because Moco is a large and complex compound deeply buried within protein, molybdoenzymes are accompanied by their private chaperone protein responsible for the cofactor's insertion into the enzyme and the enzyme's maturation...
March 23, 2017: Protein Expression and Purification
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