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https://www.readbyqxmd.com/read/28523009/transgenerational-defense-priming-for-crop-protection-against-plant-pathogens-a-hypothesis
#1
Gabriela Ramírez-Carrasco, Keren Martínez-Aguilar, Raúl Alvarez-Venegas
Throughout evolution, plants have developed diverse mechanisms of defense that "prime" their innate immune system for more robust and active induction of defense responses against different types of stress. Nowadays there are numerous reports concerning the molecular bases of priming, as well as the generational priming mechanisms. Information concerning transgenerational priming, however, remains deficient. Some reports have indicated, nonetheless, that the priming status of a plant can be inherited to its offspring...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28499469/phylogenetically-diverse-groups-of-bradyrhizobium-isolated-from-nodules-of-tree-and-annual-legume-species-growing-in-ethiopia
#2
Tulu Degefu, Endalkachew Wolde-Meskel, Kedir Woliy, Åsa Frostegård
Bacteria belonging to the genus Bradyrhizobium nodulate various leguminous woody plants and herbs, including economically important crops such as soybean, peanut and cowpea. Here we analysed 39 Bradyrhizobium strains originating from root nodules of the leguminous trees and crops Acacia saligna, Faidherbia albida, Erythrina brucei, Albizia gummifera, Millettia ferruginea, Cajanus cajan, Vigna unguiculata and Phaseolus vulgaris, growing in southern Ethiopia. Multilocus sequence analyses (MLSA) of the 16S rRNA, glnII, recA, gyrB and dnaK genes and the ITS region grouped the test strains into seven well-supported genospecies (I-VII), six of which occupied distinct positions excluding all hitherto defined Bradyrhizobium species...
April 26, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28488698/the-rhizobium-tropici-ciat-899-nodd2-protein-regulates-the-production-of-nod-factors-under-salt-stress-in-a-flavonoid-independent-manner
#3
Pablo Del Cerro, Francisco Pérez-Montaño, Antonio Gil-Serrano, Francisco Javier López-Baena, Manuel Megías, Mariangela Hungria, Francisco Javier Ollero
In the symbiotic associations between rhizobia and legumes, NodD promotes the expression of the nodulation genes in the presence of appropriate flavonoids. This set of genes is implied in the synthesis of Nodulation factors, which are responsible for launching the nodulation process. Rhizobium tropici CIAT 899 is the most successful symbiont of Phaseolus vulgaris and can nodulate a variety of legumes. This strain produces Nodulation factors under abiotic stress such as acidity or high concentration of salt...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28463779/isolation-and-structural-characterization-of-glucosylceramides-from-ethiopian-plants-by-lc-apci-ms-ms
#4
Efrem N Tessema, Tsige Gebre-Mariam, Christian E H Schmelzer, Reinhard H H Neubert
Chronic skin conditions such as atopic dermatitis, psoriasis and aged skin are characterized by defective skin barrier and dryness which are associated with reduced levels of skin ceramides (CERs). The beneficial effects of plant-derived CERs for skin hydration and skin barrier recovery have been shown in several studies. Although plenty of glucosylceramide (GlcCER)-based dietary supplements meant for skin barrier improvement have been marketed, there are limited commercial sources of plant GlcCERs. In an attempt to explore alternative GlcCER sources, a reversed phase LC-MS/MS method with atmospheric pressure chemical ionization (APCI) interface was developed for separation and structural identification of GlcCERs isolated from three plants...
April 24, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28452476/impact-of-processing-on-the-protein-quality-of-pinto-bean-phaseolus-vulgaris-and-buckwheat-fagopyrum-esculentum-moench-flours-and-blends-as-determined-by-in-vitro-and-in-vivo-methodologies
#5
Matthew G Nosworthy, Adam Franczyk, Anna Zimoch-Korzycka, Paulyn Appah, Alphonsus Utioh, Jason Neufeld, James D House
Blending of protein sources can increase protein quality by compensating for limiting amino acids present in individual sources, whereas processing grain flours by extrusion or baking can also alter protein quality. To determine the effect of baking and extrusion on the protein quality of blended flours from buckwheat and pinto beans, a rodent bioassay was performed and compared to an in vitro method of protein quality determination. Overall, extruded products had higher protein efficiency ratio values, increased digestibility, and greater protein digestibility corrected amino acid score (PDCAAS) values than baked products, with the extruded buckwheat/pinto blend having the greatest PDCAAS value of the experimental diets investigated...
May 9, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28437139/protection-against-common-bean-rust-conferred-by-a-gene-silencing-method
#6
Bret Cooper, Kimberly B Campbell
Rust disease of the dry bean plant, Phaseolus vulgaris, is caused by the fungus Uromyces appendiculatus. The fungus acquires its nutrients and energy from bean leaves using a specialized cell structure, the haustorium, through which it secretes effector proteins that contribute to pathogenicity by defeating the plant immune system. Candidate effectors have been identified by DNA sequencing and motif analysis, and some candidates have been observed in infected leaves by mass spectrometry. To assess their roles in pathogenicity, we have inserted small fragments of genes for five candidates into bean pod mottle virus...
April 24, 2017: Phytopathology
https://www.readbyqxmd.com/read/28417249/virus-vector-relationship-in-the-citrus-leprosis-pathosystem
#7
Aline Daniele Tassi, Laura Cristina Garita-Salazar, Lilian Amorim, Valdenice Moreira Novelli, Juliana Freitas-Astúa, Carl C Childers, Elliot W Kitajima
Citrus leprosis has been one of the most destructive diseases of citrus in the Americas. In the last decade important progress has been achieved such as the complete genome sequencing of its main causal agent, Citrus leprosis virus C (CiLV-C), belonging to a new genus Cilevirus. It is transmitted by Brevipalpus yothersi Baker (Acari: Tenuipalpidae), and is characterized by the localized symptoms it induces on the leaves, fruits and stems. It occurs in the American continents from Mexico to Argentina. The virus was until recently considered restricted to Citrus spp...
March 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28408912/potential-of-native-rhizobia-in-enhancing-nitrogen-fixation-and-yields-of-climbing-beans-phaseolus-vulgaris-l-in-contrasting-environments-of-eastern-kenya
#8
Gilbert Koskey, Simon W Mburu, Ezekiel M Njeru, Jacinta M Kimiti, Omwoyo Ombori, John M Maingi
Climbing bean (Phaseolus vulgaris L.) production in Kenya is greatly undermined by low soil fertility, especially in agriculturally prolific areas. The use of effective native rhizobia inoculants to promote nitrogen fixation could be beneficial in climbing bean production. In this study, we carried out greenhouse and field experiments to evaluate symbiotic efficiency, compare the effect of native rhizobia and commercial inoculant on nodulation, growth and yield parameters of mid-altitude climbing bean (MAC 13 and MAC 64) varieties...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28399495/stable-isotopic-composition-of-perchlorate-and-nitrate-accumulated-in-plants-hydroponic-experiments-and-field-data
#9
Nubia Luz Estrada, J K Böhlke, Neil C Sturchio, Baohua Gu, Greg Harvey, Kent O Burkey, David A Grantz, Margaret T McGrath, Todd A Anderson, Balaji Rao, Ritesh Sevanthi, Paul B Hatzinger, W Andrew Jackson
Natural perchlorate (ClO4(-)) in soil and groundwater exhibits a wide range in stable isotopic compositions (δ(37)Cl, δ(18)O, and Δ(17)O), indicating that ClO4(-) may be formed through more than one pathway and/or undergoes post-depositional isotopic alteration. Plants are known to accumulate ClO4(-), but little is known about their ability to alter its isotopic composition. We examined the potential for plants to alter the isotopic composition of ClO4(-) in hydroponic and field experiments conducted with snap beans (Phaseolus vulgaris L...
October 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28390028/seeding-dates-and-cultivars-effects-on-stink-bugs-population-and-damage-on-common-bean-phaseolus-vulgaris-l
#10
Y G Ramos, J R Gómez, I Klingen
Fields experiments were conducted during two growing seasons (2010-2011 and 2012-2013) at three seeding dates to identify stink bug (Hemiptera: Pentatomidae) species and to determine their seasonal population density fluctuation and damage caused to three common bean (Phaseolus vulgaris L.) cultivars "Ica Pijao," "Cubacueto 25-9," and "Chévere." Stink bug species observed were Nezara viridula (L.), Piezodorus guildinii (Westwood), Chinavia rolstoni (Rolston), Chinavia marginatum (Palisot de Beauvois), and Euschistus sp...
April 8, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28386267/genome-wide-investigation-of-wrky-transcription-factors-involved-in-terminal-drought-stress-response-in-common-bean
#11
Jing Wu, Jibao Chen, Lanfen Wang, Shumin Wang
WRKY transcription factor plays a key role in drought stress. However, the characteristics of the WRKY gene family in the common bean (Phaseolus vulgaris L.) are unknown. In this study, we identified 88 complete WRKY proteins from the draft genome sequence of the "G19833" common bean. The predicted genes were non-randomly distributed in all chromosomes. Basic information, amino acid motifs, phylogenetic tree and the expression patterns of PvWRKY genes were analyzed, and the proteins were classified into groups 1, 2, and 3...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28376308/differential-colonization-by-bioprospected-rhizobial-bacteria-associated-to-common-bean-in-different-cropping-systems-i-i
#12
Josiele Polzin de Oliveira-Francesquini, Mariangela Hungria, Daiani Cristina Savi, Chirlei Glienke, Rodrigo Aluizio, Vanessa Kava, Lygia Vitória Galli-Terasawa
In this study, we evaluated the diversity of rhizobia isolated from root nodules on common bean (<i>Phaseolus vulgaris</i>) derived from Andean and Mesoamerican centers and grown under field and greenhouse conditions. Genetic characterization of isolates was performed by sequencing analyses of the 16S rRNA and two housekeeping genes, <i>rec</i>A and <i>gln</i>II, and by the amplification of <i>nif</i>H. Symbiotic efficiency was evaluated by examining nodulation, plant-biomass production and plant-N accumulation...
April 4, 2017: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28370092/expression-of-lima-bean-terpene-synthases-in-rice-enhances-recruitment-of-a-beneficial-enemy-of-a-major-rice-pest
#13
Feng-Qi Li, Wei Li, Yong-Jun Lin, John A Pickett, Michael A Birkett, Kongming Wu, Guirong Wang, Jing-Jiang Zhou
Volatile terpenoids play a key role in plant defence against herbivory by attracting parasitic wasps. We identified seven terpene synthase genes from lima bean, Phaseolus lunatus L. following treatment with either the elicitor alamethicin or spider mites, Tetranychus cinnabarinus. Four of which (Pltps2, Pltps3, Pltps4 and Pltps5) were upregulated, and their derived proteins are phylogenetically clustered in the TPS-g subfamily, with PlTPS3 positioned at the base of this cluster. Recombinant PlTPS3 was able to convert geranyl diphosphate and farnesyl diphosphate to linalool and (E)-nerolidol, the latter being precursor of the homoterpene (E)-4,8-dimethyl-1,3,7-nonatriene (DMNT)...
March 30, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28363007/genetic-divergence-in-the-common-bean-phaseolus-vulgaris-l-in-the-cerrado-pantanal-ecotone
#14
F A da Silva, A M Corrêa, P E Teodoro, K V Lopes, C C G Corrêa
Evaluating genetic diversity among genotypes is important for providing parameters for the identification of superior genotypes, because the choice of parents that form segregating populations is crucial. Our objectives were to i) evaluate agronomic performance; ii) compare clustering methods; iii) ascertain the relative contributions of the variables evaluated; and iv) identify the most promising hybrids to produce superior segregating populations. The trial was conducted in 2015 at the State University of Mato Grosso do Sul, Brazil...
March 30, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28361541/characterization-of-polyphenol-effects-on-inhibition-and-promotion-of-iron-uptake-by-caco-2-cells
#15
Jonathan J Hart, Elad Tako, Raymond P Glahn
Polyphenolic compounds present in the seed coat of common bean (Phaseolus vulgaris L.) are known to act collectively as inhibitors of iron bioavailability. Recent research identified specific polyphenols as being potent Fe uptake inhibitors. That research also identified other polyphenols as being promoters of Fe uptake. The present study extends that work using a Caco-2 cell model to characterize the effects of 43 additional polyphenols on Fe uptake. In addition, this study indicates that the inhibitory compounds have a more potent effect that outweighs the ability of promoting compounds to increase Fe uptake...
April 12, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28359954/comparison-of-the-effects-of-commercial-coated-and-uncoated-zno-nanomaterials-and-zn-compounds-in-kidney-bean-phaseolus-vulgaris-plants
#16
Illya A Medina-Velo, Ana C Barrios, Nubia Zuverza-Mena, Jose A Hernandez-Viezcas, Chong Hyun Chang, Zhaoxia Ji, Jeffrey I Zink, Jose R Peralta-Videa, Jorge L Gardea-Torresdey
Bean (Phaseolus vulgaris) plants were grown for 45 days in soil amended with either uncoated (Z-COTE(®)) and coated (Z-COTE HP1(®)) ZnO nanomaterials (NMs), bulk ZnO and ZnCl2, at 0-500mg/kg. At harvest, growth parameters, chlorophyll, and essential elements were determined. None of the treatments affected germination and pod production, and only ZnCl2 at 250 and 500mg/kg reduced relative chlorophyll content by 34% and 46%, respectively. While Z-COTE(®) did not produce phenotypic changes, Z-COTE HP1(®), at all concentrations, increased root length (∼44%) and leaf length (∼13%) compared with control...
March 6, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28356141/genomic-history-of-the-origin-and-domestication-of-common-bean-unveils-its-closest-sister-species
#17
Martha Rendón-Anaya, Josaphat M Montero-Vargas, Soledad Saburido-Álvarez, Anna Vlasova, Salvador Capella-Gutierrez, José Juan Ordaz-Ortiz, O Mario Aguilar, Rosana P Vianello-Brondani, Marta Santalla, Luis Delaye, Toni Gabaldón, Paul Gepts, Robert Winkler, Roderic Guigó, Alfonso Delgado-Salinas, Alfredo Herrera-Estrella
BACKGROUND: Modern civilization depends on only a few plant species for its nourishment. These crops were derived via several thousands of years of human selection that transformed wild ancestors into high-yielding domesticated descendants. Among cultivated plants, common bean (Phaseolus vulgaris L.) is the most important grain legume. Yet, our understanding of the origins and concurrent shaping of the genome of this crop plant is limited. RESULTS: We sequenced the genomes of 29 accessions representing 12 Phaseolus species...
March 29, 2017: Genome Biology
https://www.readbyqxmd.com/read/28355497/molecular-characterization-of-dihydroneopterin-aldolase-and-aminodeoxychorismate-synthase-in-common-bean-genes-coding-for-enzymes-in-the-folate-synthesis-pathway
#18
Weilong Xie, Gregory Perry, Christopher Joe Martin, Youn-Seb Shim, Alireza Navabi, Karl Peter Pauls
Common beans (Phaseolus vulgaris) are excellent sources of dietary folates, but different varieties contain different amounts of these compounds. Dihydroneopterin aldolase (DHNA) and aminodeoxychorismate synthase (ADCS) genes in the folate synthesis pathway, were characterized by PCR amplification, BAC clone sequencing, and whole genome sequencing. All DHNA and ADCS genes in the Mesoamerican cultivar OAC Rex were isolated and compared with those genes in the genome of Andean genotype G19833. Both genotypes have two functional DHNA genes and one pseudo gene...
March 29, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28347863/common-bean-proteomics-present-status-and-future-strategies
#19
Sajad Majeed Zargar, Reetika Mahajan, Muslima Nazir, Preeti Nagar, Sun Tae Kim, Vandna Rai, Antonio Masi, Syed Mudasir Ahmad, Riaz Ahmad Shah, Nazir Ahmad Ganai, Ganesh K Agrawal, Randeep Rakwal
Common bean (Phaseolus vulgaris L.) is a legume of appreciable importance and usefulness worldwide to the human population providing food and feed. It is rich in high-quality protein, energy, fiber and micronutrients especially iron, zinc, and pro-vitamin A; and possesses potentially disease-preventing and health-promoting compounds. The recently published genome sequence of common bean is an important landmark in common bean research, opening new avenues for understanding its genetics in depth. This legume crop is affected by diverse biotic and abiotic stresses severely limiting its productivity...
March 24, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28343247/development-of-a-qtl-environment-based-predictive-model-for-node-addition-rate-in-common-bean
#20
Li Zhang, Salvador A Gezan, C Eduardo Vallejos, James W Jones, Kenneth J Boote, Jose A Clavijo-Michelangeli, Mehul Bhakta, Juan M Osorno, Idupulapati Rao, Stephen Beebe, Elvin Roman-Paoli, Abiezer Gonzalez, James Beaver, Jaumer Ricaurte, Raphael Colbert, Melanie J Correll
This work reports the effects of the genetic makeup, the environment and the genotype by environment interactions for node addition rate in an RIL population of common bean. This information was used to build a predictive model for node addition rate. To select a plant genotype that will thrive in targeted environments it is critical to understand the genotype by environment interaction (GEI). In this study, multi-environment QTL analysis was used to characterize node addition rate (NAR, node day(- 1)) on the main stem of the common bean (Phaseolus vulgaris L)...
March 25, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
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