Publications
Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
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the evolution of symbiont preference traits in the model legume medicago truncatula. | many hosts preferentially associate with or reward better symbionts, but how these symbiont preference traits evolve is an open question. legumes often form more nodules with or provide more resources to rhizobia that fix more nitrogen (n), but they also acquire n from soil via root foraging. it is unclear whether root responses to abiotically and symbiotically derived n evolve independently. here, we measured root foraging and both preferential allocation of root resources to and preferential a ... | 2017 | 27864973 |
wheat drought-responsive wxpl transcription factors regulate cuticle biosynthesis genes. | the cuticle forms a hydrophobic waxy layer that covers plant organs and provides protection from biotic and abiotic stresses. transcription of genes responsible for cuticle formation is regulated by several types of transcription factors (tfs). five orthologous to wax production (wxp1 and wxp2) genes from medicago truncatula were isolated from a cdna library prepared from flag leaves and spikes of drought tolerant wheat (triticum aestivum, breeding line rac875) and designated tawxp-like (tawxpl) ... | 2017 | 28161858 |
regulation of differentiation of nitrogen-fixing bacteria by microsymbiont targeting of plant thioredoxin s1. | legumes associate with rhizobia to form nitrogen (n2)-fixing nodules, which is important for plant fitness [1, 2]. medicago truncatula controls the terminal differentiation of sinorhizobium meliloti into n2-fixing bacteroids by producing defensin-like nodule-specific cysteine-rich peptides (ncrs) [3, 4]. the redox state of ncrs influences some biological activities in free-living bacteria, but the relevance of redox regulation of ncrs in planta is unknown [5, 6], although redox regulation plays ... | 2017 | 28017611 |
a conserved cis-regulatory module determines germline fate through activation of the transcription factor duo1 promoter. | the development of the male germline within pollen relies upon the activation of numerous target genes by the transcription factor duo pollen1 (duo1). the expression of duo1 is restricted to the male germline and is first detected shortly after the asymmetric division that segregates the germ cell lineage. transcriptional regulation is critical in controlling duo1 expression, since transcriptional and translational fusions show similar expression patterns. here, we identify key promoter sequence ... | 2017 | 27624837 |
cis-regulatory plethora promoter elements directing root and nodule expression are conserved between arabidopsis thaliana and medicago truncatula. | nodules are unique organs formed on roots of legumes by soil-borne bacteria, collectively known as rhizobium. recently, we have shown that orthologs of the aintegumenta-like (ail) ap2 transcription factors plethora (plt) 1 to 4, that redundantly regulate arabidopsis thaliana root development are involved in root and nodule growth in medicago truncatula. hence, it is conceivable that rhizobium has co-opted these genes for nodule development. whether this co-option requires the presence of specifi ... | 2017 | 28067580 |
catchup: a web database for spatiotemporally regulated genes. | for proper control of biological activity, some key genes are highly expressed in a particular spatiotemporal domain. mining of such spatiotemporally expressed genes using large-scale gene expression data derived from a broad range of experimental sources facilitates our understanding of genome-scale functional gene networks. however, comprehensive information on spatiotemporally expressed genes is lacking in plants. to collect such information, we devised a new index, δdmax, which is the maximu ... | 2017 | 28013273 |
expression of apoplast-targeted plant defensin mtdef4.2 confers resistance to leaf rust pathogen puccinia triticina but does not affect mycorrhizal symbiosis in transgenic wheat. | rust fungi of the order pucciniales are destructive pathogens of wheat worldwide. leaf rust caused by the obligate, biotrophic basidiomycete fungus puccinia triticina (pt) is an economically important disease capable of causing up to 50 % yield losses. historically, resistant wheat cultivars have been used to control leaf rust, but genetic resistance is ephemeral and breaks down with the emergence of new virulent pt races. there is a need to develop alternative measures for control of leaf rust ... | 2017 | 27582300 |
evolution and structural diversification of nictaba-like lectin genes in food crops with a focus on soybean (glycine max). | the nictaba family groups all proteins that show homology to nictaba, the tobacco lectin. so far, nictaba and an arabidopsis thaliana homologue have been shown to be implicated in the plant stress response. the availability of more than 50 sequenced plant genomes provided the opportunity for a genome-wide identification of nictaba-like genes in 15 species, representing members of the fabaceae, poaceae, solanaceae, musaceae, arecaceae, malvaceae and rubiaceae. additionally, phylogenetic relations ... | 2017 | 28087663 |
different functions of the histone acetyltransferase hac1 gene traced in the model species medicago truncatula, lotus japonicus and arabidopsis thaliana. | in eukaryotes, histone acetyltransferases regulate the acetylation of histones and transcription factors, affecting chromatin structural organization, transcriptional regulation, and gene activation. to assess the role of hac1, a gene encoding for a histone acetyltransferase in medicago truncatula, stable transgenic lines with modified hac1 expression in the model plants m. truncatula, lotus japonicus, and arabidopsis thaliana were generated by agrobacterium-mediated transformation and used for ... | 2017 | 27180194 |
comparison of effectiveness of 5'-regulatory sequences in transplastomic tobacco chloroplasts. | the development of tools which ensure the desired level of transgene expression in plastids is a prerequisite for the effective utilization of these plant organelles for the deployment of bioactive proteins. high-level accumulation of target proteins is considered as a positive feature of transplastomic plants, but excessive accumulation of foreign proteins may have deleterious effects on host plants. on the other hand, expression at low levels can result in ineffective phenotypes. we compared t ... | 2017 | 27565642 |
interface symbiotic membrane formation in root nodules of medicago truncatula: the role of synaptotagmins mtsyt1, mtsyt2 and mtsyt3. | symbiotic bacteria (rhizobia) are maintained and conditioned to fix atmospheric nitrogen in infected cells of legume root nodules. rhizobia are confined to the asymmetrical protrusions of plasma membrane (pm): infection threads (it), cell wall-free unwalled droplets and symbiosomes. these compartments rapidly increase in surface and volume due to the microsymbiont expansion, and remarkably, the membrane resources of the host cells are targeted to interface membrane quite precisely. we hypothesiz ... | 2017 | 28265280 |