A5013163098- Peanut Plant Research Studies
- Legume Nitrogen Fixing Symbiosis
- Nematode management and characterization studies
- Nitrogen and Sulfur Effects on Brassica
- Agricultural pest management studies
- Coconut Research and Applications
- Transgenic Plants and Applications
- Plant Taxonomy and Phylogenetics
- Chromosomal and Genetic Variations
- Plant tissue culture and regeneration
- Plant Virus Research Studies
- Cassava research and cyanide
- CRISPR and Genetic Engineering
- Soil Management and Crop Yield
- Parasitic Diseases Research and Treatment
- Plant Parasitism and Resistance
- Plant-Microbe Interactions and Immunity
- Seed Germination and Physiology
- Tree Root and Stability Studies
- Animal Genetics and Reproduction
- Insect symbiosis and bacterial influences
- Infectious Encephalopathies and Encephalitis
- Spine and Intervertebral Disc Pathology
- Agronomic Practices and Intercropping Systems
- Spinal Hematomas and Complications
Brazilian Agricultural Research Corporation
2013-2022
Applied Genetic Technologies (United States)
2018
University of Georgia
2018
Universidade Federal de Campina Grande
2018
Universidade Federal do Rio Grande do Sul
2017
International Atomic Energy Agency
2014
Universidade Católica de Brasília
2014
Instituto Superior Técnico
2010
Universidade Federal do Rio de Janeiro
1994-1995
David Bertioli and colleagues report the genomes of Arachis duranensis ipaensis, diploid ancestors cultivated peanut, hypogaea. Their analyses are a first step in understanding evolution peanut's tetraploid genome. Cultivated peanut (Arachis hypogaea) is an allotetraploid with closely related subgenomes total size ∼2.7 Gb. This makes assembly chromosomal pseudomolecules very challenging. As foundation to genome we sequences its ipaensis). We show that these similar A B use them identify...
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Wild peanut relatives (Arachis spp.) are genetically diverse and were adapted to a range of environments during the evolution course, constituting an important source allele diversity for resistance biotic abiotic stresses. The wild diploid A. stenosperma harbors high levels variety pathogens, including root-knot nematode (RKN) Meloidogyne arenaria, through onset Hypersensitive Response (HR). In order identify genes regulators triggering this defense response, comprehensive root...
Cultivated peanut is an allotetraploid (genome type AABB) with a very narrow genetic base, therefore wild species are attractive source of new variability and traits. Because most diploid, the first step introgression usually involves hybridization polyploidization to produce synthetic (AABB) that sexually compatible peanut. This study investigates drought-related traits such as leaf morphology, transpiration profile, chlorophyll meter readings (SCMR), specific area (SLA) rate per for two...
Abstract Root-knot nematodes (RKN; Meloidogyne sp.) are a major threat to crops in tropical and subtropical regions worldwide. The use of resistant crop varieties is the preferred method control because nematicides expensive, hazardous humans environment. Peanut (Arachis hypogaea) infected by four species RKN, most damaging being M. arenaria, commercial cultivars rely on single source resistance. In this study, we genetically characterize RKN resistance wild Arachis A. stenosperma using...
There is an urgent need to provide effective anti-HIV microbicides resource-poor areas worldwide. Some of the most promising microbicide candidates are biotherapeutics targeting viral entry. To poorer areas, it vital reduce cost. Here, we report production biologically active recombinant cyanovirin-N (rCV-N), antiviral protein, in genetically engineered soya bean seeds. Pure, rCV-N was isolated with a yield 350 μg/g dry seed weight. The observed amino acid sequence matched expected native...
Background and AimsArachis batizocoi is a wild relative of cultivated peanut (A. hypogaea), an allotetraploid with AABB genome. Arachis was once considered the ancestral donor B genome, but cytogenetics DNA phylogenies have indicated new genome classification, 'K'. These observations seem inconsistent genetic studies breeding that shown A. can behave as Methods The behaviour, composition phylogenetic position were studied using controlled hybridizations, induced tetraploidy, whole-genome in...
Expansins are plant cell wall-loosening proteins involved in adaptive responses to environmental stimuli and various developmental processes. The first genome-wide analysis of the expansin superfamily Arachis genus identified 40 members A. duranensis 44 ipaënsis, wild progenitors cultivated peanut (A. hypogaea). These expansins were further characterized regarding their subfamily classification, distribution along genomes, duplication events, molecular structure, phylogeny. A RNA-seq...
Several species of Arachis have been cultivated for their edible seeds, historically and to the present day. The diploid that a history cultivation show relatively small signatures domestication. In contrast, tetraploid A. hypogaea evolved into highly domesticated forms became major world crop, peanut. It seems likely allotetraploidization (hybridity and/or tetraploidization) in some way enhanced attractiveness cultivation. Here we investigate this using six different hybridization...
Plant expansins are structural cell wall-loosening proteins implicated in several developmental processes and responses to environmental constraints pathogen infection. To date, there is limited information about the biological function of expansins-like B (EXLBs), one smallest less-studied subfamilies plant expansins. In present study, we conducted a functional analysis wild Arachis AdEXLB8 gene transgenic tobacco (Nicotiana tabacum) plants clarify its putative role mediating defense...
Peanut (Arachis hypogaea) is an allotetraploid (AABB-type genome) of recent origin, with a genome about 2·8 Gb and high repetitive content. This study reports analysis the component peanut A using bacterial artificial chromosome (BAC) clones from A. duranensis, most probable donor, consequences activity these elements since divergence B genomes. The content was analysed by duranensis BAC as probes for fluorescence in situ hybridization (BAC-FISH), sequencing characterization 12 genomic...
The hemibiotrophic fungus Colletotrichum graminicola may cause severe damage to maize, affecting normal development of the plant and decreasing grain yield. In this context, understanding defense pathways at inoculation site systemically in uninoculated tissues can help genetic engineering resistance against pathogen. Previous work has discussed molecular basis maize - C. interaction. However, many genes involved have not yet been exploited for lack annotation public databases. Here, changes...
The Root-Knot Nematode (RKN), Meloidogyne arenaria, significantly reduces peanut grain quality and yield worldwide. Whilst the cultivated species has low levels of resistance to RKN other pests diseases, wild relatives (Arachis spp.) show rich genetic diversity harbor high many pathogens environmental constraints. Comparative transcriptome analysis can be applied identify candidate genes.Transcriptome during early stages infection two relatives, highly resistant Arachis stenosperma...
Root-knot nematodes constitute a constraint for important crops, including peanut (Arachis hypogaea L.). Resistance to Meloidogyne arenaria has been identified in the wild relative Arachis stenosperma Krapov. & W. C. Greg., which induction of feeding sites by nematode was inhibited an early hypersensitive response (HR). Here, transcription expression profiles 19 genes selected from species were analysed using quantitative reverse transcription-polymerase chain reaction (qRT-PCR), during...
Peanut (Arachis hypogaea) production is largely affected by a variety of abiotic and biotic stresses, including the root-knot nematode (RKN) Meloidogyne arenaria that causes yield losses worldwide. Transcriptome studies wild Arachis species, which harbor resistance to number pests diseases, disclosed several candidate genes for M. resistance. recalcitrant genetic transformation, so use Agrobacterium rhizogenes-derived hairy roots emerged as an alternative in-root functional characterization...
Wild peanut relatives (Arachis spp.) are genetically diverse and were selected throughout evolution to a range of environments constituting, therefore, an important source allelic diversity for abiotic stress tolerance. In particular, A. duranensis stenosperma, the parents reference Arachis A-genome genetic map, show contrasting transpiration behavior under limited water conditions. This study aimed build comprehensive gene expression profile these two wild species dehydration caused by...
Plant dehydrins (DNHs) belong to the LEA (Late Embryogenesis Abundant) protein family and are involved in responses multiple abiotic stresses. DHNs classified into five subclasses according organization of three conserved motifs (K-; Y-; S-segments). In present study, DHN was characterized by molecular phylogeny, exon/intron organization, structure, tissue-specificity expression eight Fabaceae species. We identified 20 genes, encompassing (YnSKn, SKn, Kn) sharing similar gene structure. Two...
Abstract Cultivated peanut, Arachis hypogaea L., is an economically important species. It very susceptible to different stresses which wild species are mostly resistant. Foliar diseases, such as late leaf spot (LLS) caused by the fungus Cercosporidium personatum , and rust Puccinia arachidis responsible for decrease in plant growth productivity. The peanut relative stenosperma accession V10309 was identified resistant a number of pests including LLS rust. Aiming better understand mechanisms...