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https://www.readbyqxmd.com/read/28887555/monitoring-the-colonization-and-infection-of-legume-nodules-by-micromonospora-in-co-inoculation-experiments-with-rhizobia
#1
Patricia Benito, Pablo Alonso-Vega, Carolina Aguado, Rafael Luján, Yojiro Anzai, Ann M Hirsch, Martha E Trujillo
The discovery that the actinobacterium Micromonospora inhabits nitrogen-fixing nodules raised questions as to its potential ecological role. The capacity of two Micromonospora strains to infect legumes other than their original host, Lupinus angustifolius, was investigated using Medicago and Trifolium as test plants. Compatible rhizobial strains were used for coinoculation of the plants because Micromonospora itself does not induce nodulation. Over 50% of nodules from each legume housed Micromonospora, and using 16S rRNA gene sequence identification, we verified that the reisolated strains corresponded to the microorganisms inoculated...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28828256/biological-effects-of-carbon-nanotubes-generated-in-forest-wildfire-ecosystems-rich-in-resinous-trees-on-native-plants
#2
Javier Lara-Romero, Jesús Campos-García, Nabanita Dasgupta-Schubert, Salomón Borjas-García, D K Tiwari, Francisco Paraguay-Delgado, Sergio Jiménez-Sandoval, Gabriel Alonso-Nuñez, Mariela Gómez-Romero, Roberto Lindig-Cisneros, Homero Reyes De la Cruz, Javier A Villegas
Carbon nanotubes (CNTs) have a broad range of applications and are generally considered human-engineered nanomaterials. However, carbon nanostructures have been found in ice cores and oil wells, suggesting that nature may provide appropriate conditions for CNT synthesis. During forest wildfires, materials such as turpentine and conifer tissues containing iron under high temperatures may create chemical conditions favorable for CNT generation, similar to those in synthetic methods. Here, we show evidence of naturally occurring multiwalled carbon nanotubes (MWCNTs) produced from Pinus oocarpa and Pinus pseudostrobus, following a forest wildfire...
2017: PeerJ
https://www.readbyqxmd.com/read/28803155/assisted-phytoremediation-of-a-multi-contaminated-soil-investigation-on-arsenic-and-lead-combined-mobilization-and-removal
#3
Meri Barbafieri, Francesca Pedron, Gianniantonio Petruzzelli, Irene Rosellini, Elisabetta Franchi, Roberto Bagatin, Marco Vocciante
The removal of contaminants from an earthy matrix by phytoremediation requires the selection of appropriate plant species and a suitable strategy to be effective. In order to set up an assisted phytoremediation intervention related to a disused industrial site affected by an arsenic and lead complex contamination, an extensive experimental investigation on micro and mesocosm scale has been conducted. Particular attention was given to the choice of plant species: using crop plants (Lupinus albus, Helianthus annuus and Brassica juncea) a series of parallel test campaigns have been realized to investigate different scenarios for the reclamation...
August 10, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28729275/whole-genome-sequences-of-14-strains-of-bradyrhizobium-canariense-and-1-strain-of-bradyrhizobium-japonicum-isolated-from-lupinus-spp-in-algeria
#4
Djamel Chekireb, Julien Crovadore, Andreas Brachmann, Romain Chablais, Bastien Cochard, François Lefort
We report here the whole-genome sequences of 14 strains of Bradyrhizobium canariense, isolated from root nodules of Lupinus microanthus and Lupinus angustifolius, and 1 strain of Bradyrhizobium japonicum isolated from root nodules from Lupinus angustifolius in Algeria. These sequences add to the known diversity of this agronomically important genus.
July 20, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28702011/bridging-the-gap-to-non-toxic-fungal-control-lupinus-derived-blad-containing-oligomer-as-a-novel-candidate-to-combat-human-pathogenic-fungi
#5
Ana M Pinheiro, Alexandra Carreira, Thomas A K Prescott, Ricardo B Ferreira, Sara A Monteiro
The lack of antifungal drugs with novel modes of action reaching the clinic is a serious concern. Recently a novel antifungal protein referred to as Blad-containing oligomer (BCO) has received regulatory approval as an agricultural antifungal agent. Interestingly its spectrum of antifungal activity includes human pathogens such as Candida albicans, however, its mode of action has yet to be elucidated. Here we demonstrate that BCO exerts its antifungal activity through inhibition of metal ion homeostasis which results in apoptotic cell death in C...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28694440/phylogenomic-analysis-of-mkks-and-mapks-from-16-legumes-and-detection-of-interacting-pairs-in-chickpea-divulge-mapk-signalling-modules
#6
Savithri Purayannur, Kamal Kumar, Vemula Chandra Kaladhar, Praveen Kumar Verma
The mitogen-activated protein kinase (MAPK)-mediated phosphorylation cascade is a vital component of plant cellular signalling. Despite this, MAPK signalling cascade is less characterized in crop legumes. To fill this void, we present here a comprehensive phylogeny of MAPK kinases (MKKs) and MAPKs identified from 16 legume species belonging to genistoid (Lupinus angustifolius), dalbergioid (Arachis spp.), phaseoloid (Glycine max, Cajanus cajan, Phaseolus vulgaris, and Vigna spp.), and galegoid (Cicer arietinum, Lotus japonicus, Medicago truncatula, Pisum sativum, Trifolium spp...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28647304/phylogenies-of-symbiotic-genes-of-bradyrhizobium-symbionts-of-legumes-of-economic-and-environmental-importance-in-brazil-support-the-definition-of-the-new-symbiovars-pachyrhizi-and-sojae
#7
Jakeline Renata Marçon Delamuta, Pâmela Menna, Renan Augusto Ribeiro, Mariangela Hungria
Bradyrhizobium comprises most tropical symbiotic nitrogen-fixing strains, but the correlation between symbiotic and core genes with host specificity is still unclear. In this study, the phylogenies of the nodY/K and nifH genes of 45 Bradyrhizobium strains isolated from legumes of economic and environmental importance in Brazil (Arachis hypogaea, Acacia auriculiformis, Glycine max, Lespedeza striata, Lupinus albus, Stylosanthes sp. and Vigna unguiculata) were compared to 16S rRNA gene phylogeny and genetic diversity by rep-PCR...
July 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28640886/epigenomic-diversification-within-the-genus-lupinus
#8
Karolina Susek, Agnieszka Braszewska-Zalewska, Adam J Bewick, Robert Hasterok, Robert J Schmitz, Barbara Naganowska
Deciphering the various chemical modifications of both DNA and the histone compound of chromatin not only leads to a better understanding of the genome-wide organisation of epigenetic landmarks and their impact on gene expression but may also provide some insights into the evolutionary processes. Although both histone modifications and DNA methylation have been widely investigated in various plant genomes, here we present the first study for the genus Lupinus. Lupins, which are members of grain legumes (pulses), are beneficial for food security, nutrition, health and the environment...
2017: PloS One
https://www.readbyqxmd.com/read/28562076/the-influence-of-narrow-leafed-lupin-seed-fermentation-on-their-chemical-composition-and-ileal-digestibility-and-microbiota-in-growing-pigs
#9
Anita Zaworska, Andrzej Frankiewicz, Małgorzata Kasprowicz-Potocka
The aims of this study were to provide a controlled fermentation process of blue lupin seeds (Lupinus angustifolius, cv. Neptun), monitor the changes in seed composition and determine the influence of the fermentation on the apparent ileal digestibility (AID) of crude protein (CP) and amino acids in growing pigs, compared with raw lupin seeds. The fermentation with bacteria and yeast was conducted for 24 h at 25ºC under aerobic conditions. Seed fermentation increased the contents of CP, fibre, fat and ash and most of the analysed amino acids but reduced the levels of the nitrogen-free extractives...
May 31, 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28558332/nitrate-simultaneously-enhances-lipid-and-protein-accumulation-in-developing-yellow-lupin-cotyledons-cultured-in-vitro-but-not-under-field-conditions
#10
Sławomir Borek, Ewa Marzena Kalemba, Stanisława Pukacka, Małgorzata Pietrowska-Borek, Stanisław Stawiński, Lech Ratajczak
The research was conducted on yellow lupin (Lupinus luteus L.) mature seeds, developing cotyledons, developing pods, and seedlings. The main storage compound in yellow lupin seeds is protein, whose content may reach up to 45%. Oil content in seeds of yellow lupin is about 6%. In such protein-storing seeds there is a strong negative relationship between accumulation of storage lipid and protein. An increase in protein content causes a decrease in lipid level, and vice versa. However, simultaneous increase in lipid and protein content is possible in developing lupin cotyledons (the main storage organs of lupin seeds) cultured in vitro...
September 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28532146/calcium-iron-and-zinc-bioaccessibilities-of-australian-sweet-lupin-lupinus-angustifolius-l-cultivars
#11
Weeraya Karnpanit, Ranil Coorey, Jon Clements, Wenika Benjapong, Vijay Jayasena
In this study, we aimed to determine the effect of the cultivar and dehulling on calcium, iron, and zinc bioaccessibilities of Australian sweet lupin (ASL). Ten ASL cultivars grown in 2011, 2012, and 2013 in Western Australia were used for the study. The bioaccessibilities of calcium, iron, and zinc in whole seed and dehulled lupin samples were determined using a dialysability method. The cultivar had significant effects on calcium, iron, and zinc contents and their bioaccessibilities. Average bioaccessibilities of 6% for calcium, 17% for iron, and 9% for zinc were found for whole seeds...
June 14, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28516510/proteomic-analysis-of-lupinus-angustifolius-var-zeus-and-bojar-and-lupinus-luteus-var-lord-and-parys-seed-proteins-and-their-hydrolysates
#12
Jaroslaw Czubinski, Magdalena Montowska, Edward Pospiech, Eleonora Lampart-Szczapa
BACKGROUND: Proteins enzymatic digestion is a very complex process, during which some components are degraded, while others remain in an unchanged form. Moreover, the enzymatic hydrolysis is one of the most popular methods used to reduce the allergenicity of food proteins. In this study, the efficiency of enzymatic hydrolysis of lupin seeds proteins was assessed by proteomic analysis performed by two-dimensional gel electrophoresis (2-DE) coupled with mass spectrometry identification...
May 18, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28512462/de-novo-transcriptome-profiling-of-flowers-flower-pedicels-and-pods-of-lupinus-luteus-yellow-lupine-reveals-complex-expression-changes-during-organ-abscission
#13
Paulina Glazinska, Waldemar Wojciechowski, Milena Kulasek, Wojciech Glinkowski, Katarzyna Marciniak, Natalia Klajn, Jacek Kesy, Jan Kopcewicz
Yellow lupine (Lupinus luteus L., Taper c.), a member of the legume family (Fabaceae L.), has an enormous practical importance. Its excessive flower and pod abscission represents an economic drawback, as proper flower and seed formation and development is crucial for the plant's productivity. Generative organ detachment takes place at the basis of the pedicels, within a specialized group of cells collectively known as the abscission zone (AZ). During plant growth these cells become competent to respond to specific signals that trigger separation and lead to the abolition of cell wall adhesion...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28505579/effect-of-lupinus-albus-l-root-activities-on-as-and-cu-mobility-after-addition-of-iron-based-soil-amendments
#14
Teresa Fresno, Jesús M Peñalosa, Jakob Santner, Markus Puschenreiter, Eduardo Moreno-Jiménez
Arsenic and Cu mobility was investigated in the rhizosphere of Lupinus albus L. grown in an iron-amended contaminated soil. White lupin was grown in rhizobags in contaminated soil either left untreated or amended with iron sulphate plus lime (Fe + lime) or biochar (Fe + BC). Porewater was monitored in rhizosphere and bulk soil throughout the experiment and the extractable fraction of several elements and As and Cu plant uptake was analysed after 48 days. The distribution of As, Cu, P and Fe in the lupin rhizosphere was evaluated with chemical images obtained by laser ablation-ICP-MS analysis of diffusive gradients in thin films (DGT) gels...
May 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28505340/members-of-microvirga-and-bradyrhizobium-genera-are-native-endosymbiotic-bacteria-nodulating-lupinus-luteus-in-northern-tunisian-soils
#15
Abdelhakim Msaddak, Mokhtar Rejili, David Durán, Luis Rey, Juan Imperial, Jose Manuel Palacios, Tomas Ruiz-Argüeso, Mohamed Mars
The genetic diversity of bacterial populations nodulating Lupinus luteus (yellow lupine) in Northern Tunisia was examined. Phylogenetic analyses of 43 isolates based on recA and gyrB partial sequences grouped them in three clusters, two of which belong to genus Bradyrhizobium (41 isolates) and one, remarkably, to Microvirga (2 isolates), a genus never previously described as microsymbiont of this lupine species. Representatives of the three clusters were analysed in-depth by multilocus sequence analysis of five housekeeping genes (rrs, recA, glnII, gyrB and dnaK)...
June 1, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28494312/anagyrine-desensitization-of-peripheral-nicotinic-acetylcholine-receptors-a-potential-biomarker-of-quinolizidine-alkaloid-teratogenesis-in-cattle
#16
Benedict T Green, Stephen T Lee, Kevin D Welch, Daniel Cook
Anagyrine, a teratogenic quinolizidine alkaloid found in Lupinus spp., is proposed to undergo metabolism by pregnant cattle to a piperidine alkaloid which inhibits fetal movement, the putative mechanism behind crooked calf syndrome. The objective of this study was to test the hypothesis that anagyrine but not lupanine or sparteine can directly, without metabolism, desensitize nicotinic acetylcholine receptors (nAChR) in a cell culture model. SH-SY5Y cells expressing autonomic nAChR, and TE-671 cells expressing fetal muscle-type nAChR were exposed to lupine alkaloids or Dimethylphenylpiperazinium (DMPP) in log10 molar increments from 10nM to 100μM and then to a fixed concentration of acetylcholine (ACh) (10μM for SH-SY5Y cells and 1μM for TE-671 cells) and the responses measured with a membrane potential sensing dye to assess nAChR activation and desensitization...
May 2, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28460988/thermal-treatment-of-lupin-based-milk-alternatives-impact-on-lupin-proteins-and-the-network-of-respective-lupin-based-yogurt-alternatives
#17
A Hickisch, K Bindl, R F Vogel, S Toelstede
In this study lupin-based milk alternative (LBMA), obtained from protein isolate of Lupinus angustifolius cv. Boregine, was homogenized and was subjected to different heat treatments (unheated; pasteurized: 80°C, 60s; ultra-high temperature heating (UHT): 140°C, 10s). Upon thermal treatment, lupin proteins, namely β-conglutin and α-conglutin, were stepwise denatured, which was accompanied by the exposure of masked sulfhydryl groups, the decrease of free sulfhydryl groups and reoxidation to disulfide bridges...
November 2016: Food Research International
https://www.readbyqxmd.com/read/28450875/reproductive-strategies-in-mediterranean-legumes-trade-offs-between-phenology-seed-size-and-vigor-within-and-between-wild-and-domesticated-lupinus-species-collected-along-aridity-gradients
#18
Jens D Berger, Damber Shrestha, Christiane Ludwig
To investigate wild and domesticated Mediterranean annual reproductive strategies, common garden comparisons of Old World lupins collected along aridity gradients were initiated. These are excellent candidates for ecophysiology, being widely distributed across contrasting environments, having distinct domestication histories, from ancient Lupinus albus to recently domesticated Lupinus angustifolius and Lupinus luteus, facilitating the study of both natural and human selection. Strong trade-offs between seed size, early vigor and phenology were observed: vigor increasing, and flowering becoming earlier with increasing seed size...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28399123/the-distinct-plastid-genome-structure-of-maackia-fauriei-fabaceae-papilionoideae-and-its-systematic-implications-for-genistoids-and-tribe-sophoreae
#19
In-Su Choi, Byoung-Hee Choi
Traditionally, the tribe Sophoreae sensu lato has been considered a basal but also heterogeneous taxonomic group of the papilionoid legumes. Phylogenetic studies have placed Sophoreae sensu stricto (s.s.) as a member of the core genistoids. The recently suggested new circumscription of this tribe involved the removal of traditional members and the inclusion of Euchresteae and Thermopsideae. Nonetheless, definitions and inter- and intra-taxonomic issues of Sophoreae remain unclear. Within the field of legume systematics, the molecular characteristics of a plastid genome (plastome) have an important role in helping to define taxonomic groups...
2017: PloS One
https://www.readbyqxmd.com/read/28346361/specificity-in-legume-rhizobia-symbioses
#20
REVIEW
Mitchell Andrews, Morag E Andrews
Most species in the Leguminosae (legume family) can fix atmospheric nitrogen (N₂) via symbiotic bacteria (rhizobia) in root nodules. Here, the literature on legume-rhizobia symbioses in field soils was reviewed and genotypically characterised rhizobia related to the taxonomy of the legumes from which they were isolated. The Leguminosae was divided into three sub-families, the Caesalpinioideae, Mimosoideae and Papilionoideae. Bradyrhizobium spp. were the exclusive rhizobial symbionts of species in the Caesalpinioideae, but data are limited...
March 26, 2017: International Journal of Molecular Sciences
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