http://precedings.nature.com/tags/Plants Recently posted documents tagged with 'Plants' Nature Publishing Group en Nature Precedings http://precedings.nature.com/images/header_logo.gif http://precedings.nature.com http://precedings.nature.com/documents/3300/version/1 A plant’s metabolism contains 90-95 percent of diamagnetic water and rest contains several apra, ferro and dia metals and non-metals.The present work is to study stimulating magnetic effect on plants. In result I find abrupt rising of the pulse rate which may enhance the growth of the plant resulting in removing of necessity of using fertilizers and chemicals for plant growth if it is for human consumption. A relation can also be established in between plant pulsation and the applied field. http://precedings.nature.com/documents/3300/version/1 Mon, 08 Jun 2009 09:54:33 UTC Effect of Stimulating Magenetic Field on Plants hdl:10101/npre.2009.3300.1 2009-06-15 R. V. K. Charan Nature Precedings 2009-06-08T09:54:33Z Manuscript Biotechnology Plant Biology http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/3260/version/1 Studies prove that plague in Citellus undulatus exists in the nature with the pattern of successive prevalence every year. Citellophilus tesquorum altaicus is not only the main transmission vector, but also the reservoir of C. undulatus plague. And the latter can spread Yersinia pestis. The fact challenges to the traditional theory of natural focus and carries out a theory breakthrough. http://precedings.nature.com/documents/3260/version/1 Thu, 21 May 2009 09:07:13 UTC Discussion on preservation mechanism of Yersinia pestis by Citellus undulatus hdl:10101/npre.2009.3260.1 2009-05-21 Cunning Qian Nature Precedings 2009-05-21T09:07:13Z Manuscript Ecology http://creativecommons.org/licenses/by/3.0/ http://dx.doi.org/10.1038/npre.2009.3136.1 With the increasing number of genomes being sequenced, a major objective is to transfer accurate annotation from characterised proteins to uncharacterised sequences. Consequently, comparative genomics has become a usual and efficient strategy in functional genomics. The release of various annotated genomes of plants, such as O. sativa and A. thaliana, has allowed setting up comprehensive lists of gene families defined by automated methods. However, like for gene sequence, manual curation of gene families is an important requirement that has to be undertaken. GreenPhylDB comprises protein sequences of 12 plant species fully sequenced that were grouped into homeomorphic families using similarity-based methods. Clusters are finally processed by phylogenetic analysis to infer orthologs and paralogs that will be particularly helpful to study genome evolution. Previously, each cluster has to be curated (i.e. properly named and classified) using different sources of information. A web interface for plant gene families’ curation was developed for that purpose. This interface, accessible on GreenPhylDB (http://greenphyl.cirad.fr), centralizes external references (e.g. InterPro, KEGG, Swiss-Prot, PIRSF, Pubmed) related to all gene members of the clusters and shows statistics and automatic analysis. We believe that this synthetic view of data available for a gene cluster, combined with basic guidelines, is an efficient way to provide reliable method for gene family annotations. http://dx.doi.org/10.1038/npre.2009.3136.1 Fri, 24 Apr 2009 15:42:55 UTC GreenPhylDB: A Gene Family Database for plant functional Genomics doi:10.1038/npre.2009.3136.1 2009-04-24 Mathieu Rouard Nature Precedings 2009-04-24T15:42:55Z Poster Bioinformatics Plant Biology Evolutionary Biology http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/2403/version/1 The randomly amplified polymorphic DNA (RAPD) technique was used to investigate the genetic diversity in 6 strains of Xanthomonas campestris pv. mangiferaeindicae (Xcmi), the causal pathogen of mango bacterial canker disease (MBCD). The RAPD analysis was also intended to identify molecular markers, specific to the species to develop PCR-based markers for detection of Xcmi in mango field and planting materials. Twenty RAPD primers (CP 1-CP 20) were evaluated to establish molecular characters and genetic variability in the genome of Xcmi. Among these, only 4 were found efficient for development of reproducible banding pattern. It has been observed that the largest and smallest amplified RAPD products were of 2.036 and 0.201 kbp. A total of 136 bands were scored against 6 strains of Xcmi. There was 7.66 per cent polymorphism in individual isolates which indicates significant polymorphism among the evaluated strains, with mean difference of 0.33 (Xcmi 2 vs. Xcmi 8) and 0.29 (Xcmi 10 vs. Xcmi 12). However, the single linkage euclidean distances were statistically significant (P>0.05), i.e., 0.58. The markers CP 5, 10, 16 and 19 were amplified in all the strains with polymorphic alleles, which indicates that these markers could be used for rapid detection of genetic variability in Xcmi strains. http://precedings.nature.com/documents/2403/version/1 Thu, 16 Oct 2008 16:08:58 UTC Detection of genetic diversity among Indian strains of Xanthomonas campestris pv. mangiferaeindicae using PCR-RAPD hdl:10101/npre.2008.2403.1 2008-10-16 Ram Kishun Nature Precedings 2008-10-16T16:08:58Z Manuscript Biotechnology Microbiology http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/2360/version/1 World sugarcane production is increasing rapidly as a biofuel. In some areas in Brazil, sugarcane has been grown continually over very long periods without N fertiliser inputs. Therefore, the occurrence of N fixation has been suspected. However, quantitative studies seeking to identify the N2 fixation sites in the plant and to record the translocation of fixed N around the plant have not yet established. A 15N2 gas tracer experiment was conducted using young sugarcane plants to investigate the sites of N2 fixation and also to explore the possibility of translocation of the fixed N among the plant’s major organs. Young sugarcane plants (Saccharum officinarum L.) about 40 cm high and some 14 days after sprouting from a stem cutting were exposed to 15N2 labeled air in a 500 mL plastic cylinder for 7 days. Following the 7-day 15N2 feeding, some plants were potted and grown on in normal air for a further chase period. The incorporation of 15N into the shoot, roots, and stem cutting was analysed at day-3, and day-7 of the labeling period and at day-14, and day-21 during the chase period. After 3 days of 15N2 feeding, the % of N derived from the 15N labeled air in the shoot, roots and stem cutting were 0.027%, 2.22% and 0.271%, respectively. The roots showed the highest N fixing activity followed by the stem cutting, while the incorporation of 15N into the shoot was very low. After 21 days about a half of the N originating in the stem cutting had been transported to the shoot and the roots. However, the 15N fixed either in the roots or in the stem cutting remained in the original parts and was not appreciably transported to the shoot. http://precedings.nature.com/documents/2360/version/1 Tue, 07 Oct 2008 01:54:06 UTC Nitrogen Fixation and Translocation in Sugarcane hdl:10101/npre.2008.2360.1 2008-10-07 Takuji Ohyama Nature Precedings 2008-10-07T01:54:06Z Manuscript Ecology Earth & Environment Plant Biology http://creativecommons.org/licenses/by/3.0/ http://dx.doi.org/10.1038/npre.2008.2210.1 The GABI Primary Database, GabiPD (http://www.gabipd.org/), was established in the frame of the German initiative for Genome Analysis of the Plant Biological System (GABI). The goal of GabiPD is to collect, integrate, analyse and visualise primary information from GABI projects. GabiPD constitutes a repository and analysis platform for a wide array of heterogeneous data from high-throughput experiments in several plant species. Data from different ‘omics’ fronts are incorporated (i.e., genomics, transcriptomics, proteomics and metabolomics), originating from 14 different model or crop species. We have developed the concept of GreenCards for text based retrieval of all data types in GabiPD (e.g., clones, genes, mutant lines). All data types point to a central Gene GreenCard, where gene information is integrated from genome projects or NCBI UniGene sets. The centralised Gene GreenCard allows visualising ESTs aligned to annotated transcripts as well as displaying identified protein domains and gene structure. Moreover GabiPD makes available interactive genetic maps from potato and barley, and 2DE-gels from Arabidopsis thaliana and Brassica napus. Gene expression and metabolic profiling data can be visualised through MapManWeb. By the integration of complex data in a framework of existing knowledge, GabiPD provides new insights and allows for new interpretations of the data. http://dx.doi.org/10.1038/npre.2008.2210.1 Fri, 22 Aug 2008 09:31:55 UTC GabiPD: The GABI Primary Database – a plant integrative ‘omics’ database doi:10.1038/npre.2008.2210.1 2008-08-22 Diego Mauricio Riaño-Pachón Nature Precedings 2008-08-22T09:31:55Z Manuscript Genetics & Genomics Molecular Cell Biology Bioinformatics http://creativecommons.org/licenses/by/3.0/ http://dx.doi.org/10.1038/npre.2008.1846.1 Floral reflectance measurements are of great value to researchers who need consider the real colour of flowers, for example in the context of how the flowers appear to their pollinators. We have thus developed the Floral Reflectance Database (FReD) to assist these researchers, gathering together floral reflectance data in a publicly available, searchable online database. The first version of the database is now available online at http://www.reflectance.co.uk. We anticipate that this resource will be of interest to researchers working on flower colour and animal vision. http://dx.doi.org/10.1038/npre.2008.1846.1 Wed, 30 Apr 2008 18:07:30 UTC FReD: The floral reflectance spectra database doi:10.1038/npre.2008.1846.1 2008-04-30 Sarah E. J. Arnold Nature Precedings 2008-04-30T18:07:30Z Manuscript Ecology Bioinformatics http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/1824/version/1 The Chinese orchid, Cymbidium serratum, is pollinated by the wild mountain mouse Rattus fulvescens. The flowers use both odor and colour as attractants, and provide labellum as food reward for the pollinators. The mice pollinate the flowers during their endeavour to eat the labellums. http://precedings.nature.com/documents/1824/version/1 Tue, 22 Apr 2008 11:58:01 UTC The unique mouse pollination in an orchid species hdl:10101/npre.2008.1824.1 2008-04-22 Yong Wang Nature Precedings 2008-04-22T11:58:01Z Manuscript Ecology Evolutionary Biology http://creativecommons.org/licenses/by/3.0/ http://dx.doi.org/10.1038/npre.2008.1684.1 GabiPD (http://gabi.rzpd.de) was established within GABI-I and further developed in GABI-II and constitutes a repository and analysis platform for a wide array of heterogeneous data arising from high throughput experiments developed by members of the GABI/WPG community. Currently, data from different fronts (genomics, transcriptomics, proteomics, metabolomics) are incorporated in GabiPD, representing 14 different biological species. Last year GabiPD moved to the Max Planck Institute of Molecular Plant Physiology. In the progressing GABI-FUTURE phase, the GabiPD team has been creating a more integrative data view, expanding the tools and information provided by our well-known GreenCards. Links to different species-specific (Arabidopsis thaliana so far) GABI-resources (e.g., Aramemnon, GABI-KAT) as well as external resources (e.g., ProMEX) are being added or updated. All data types (e.g., protein spots, clones) in GabiPD are pointing to the central Gene’s GreenCard, where gene information is retrieved from genome annotation projects or large UniGene sets provided by NCBI. Moreover, the GabiPD team will perform new types of data computations, like analysis of conserved domains in protein sequences. http://dx.doi.org/10.1038/npre.2008.1684.1 Thu, 13 Mar 2008 12:46:38 UTC GabiPD: Gabi Primary Database – a plant integrative ‘omics’ database in GABI-FUTURE doi:10.1038/npre.2008.1684.1 2008-12-04 Diego Mauricio Riaño-Pachón Nature Precedings 2008-03-13T12:46:38Z Poster Bioinformatics Plant Biology http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/1608/version/1 A distinct feature of eukaryotic genomes is the presence of gene families. The polygalacturonase (PG) (EC3.2.1.15) gene family is one of the largest gene families in plants. PG is a pectin-digesting enzyme with a glycoside hydrolase 28 domain. It is involved in numerous plant developmental processes. The evolutionary processes accounting for the functional divergence and the specialized functions of PGs in land plants are unclear. Here, phylogenetic and gene structure analysis of PG genes in algae and land plants revealed that land plant PG genes resulted from differential intron gain and loss, with the latter event predominating. PG genes in land plants contained 15 homologous intron blocks and 13 novel intron blocks. Intron position and phase were not conserved between PGs of algae and land plants but conserved among PG genes of land plants from moss to vascular plants, indicating that the current introns in the PGs in land plants appeared after the split between unicellular algae and multicelluar land plants. These findings demonstrate that the functional divergence and differentiation of PGs in land plants is attributable to intronic loss. Moreover, they underscore the importance of intron gain and loss in genomic adaptation to selective pressure. http://precedings.nature.com/documents/1608/version/1 Fri, 29 Feb 2008 19:02:36 UTC Structural dynamics and divergence of the polygalacturonase gene family in land plants hdl:10101/npre.2008.1608.1 2008-12-04 Nam-Soo Kim Nature Precedings 2008-02-29T19:02:36Z Manuscript Genetics & Genomics Plant Biology Evolutionary Biology http://creativecommons.org/licenses/by/3.0/