Posts Tagged ‘tree’

myTree of the Month

January 27th, 2013

Philip Greenwood

Snow Night (1974)

Phil Greenwood was born in 1943 in Dolgellau North Wales. Phil is an artist whose work whether in print or paint is inspired by landscape.

Other paintings … ‘Phil Greenwood Prints at CCA Galleries

 

 

myTree of the Month

August 15th, 2012

From Pop Entosa’s site. Pep’s work is focused on an exploration of the medium itself–deconstructing and reconstructing photographic images to create new visual experiences. I like the series dedicated to trees. Multiple shots of each tree were taken while walking in a circle around it, then blended together and reworked to discover what became of the orbit – the tree and its environment.

my Tree of the Month

January 29th, 2012

I enjoyed very much visiting the first retrospective exhibition “Jacques Gruber and Art Nouveau: A Decorative Path” dedicated to the work of the artist in stained glass Jacques Gruber (1870-1936) by the École de Nancy Museum.

The museum has assembed more than 150 of Gruber’s fine works, including posters and paintings, decorative pieces and furniture, but pride of place goes to the magnificent stained-glass works for which Gruber became most famous, including great mountain landscapes from the nearby Vosges range.

Date Palm Genome

July 17th, 2011

The Date palm, Phoenix dactylifera L., is a tree of the palm family (Arecaceae, or Palmae), native to desert regions of the Persian Gulf. Mentioned in the Qur’an and Bible, its fruits have been a staple food in the Middle East since the neolithic. Today, dates are amongst the most important crop of many countries in the Arabian Gulf and North Africa.

A draft version of the genome of the Khalas variety has been published by a team of the Weill Cornell Medical College in Qatar in the June 2011 issue of Nature Biotechnology.

The Khalas genome has been sequenced using the Illumina GA IIx and the WGS assembly only covered 380 Mbp of the total ~658 Mbp genome size. As expected, large repeated regions were not included in the assembly, but most of the gene space has been assembled. Although a detailed analysis of the metabolic and developmental pathways is missing from this paper, the draft genome has been used to generate very useful genetic tools. The genome sequences of eight additional cultivars were used for an in-depth SNP/CNV analysis. A set of 32 SNPs has been identified for discriminating varieties, a long awaited tool for breeders. A region linked to gender determination was also characterized.

This genome and genetic resources should be very useful for improving traits such a fruit quality.

Image: Palmier dattier by Martiros Sarian (1880-1972).

Another Big Tree Genome

May 7th, 2010

450px-Eucalyptus_grandis_(1)The preliminary 8X draft assembly of the Eucalyptus grandis genome, which is being sequenced by the US Department of Energy (DOE) Joint Genome Institute (JGI), is now available at the public Eucalyptus Genome Database (EucalyptusDB). Members of the Eucalyptus research community and the wider plant genomics community are invited to make use of this resource, which is already widely accessed.

Some notes on this release:

1. The genome browser in EucalyptusDB has been updated to Generic Genome Browser (GBrowse) version 2.0.

2. The browser for the preliminary 4.5X (checkpoint) assembly will remain accessible, but is currently also being updated to GBrowse 2.0.

3. The 8X assembly released on EucalyptusDB is the first draft assembly that incorporates all of the Sanger sequences produced for the E. grandis genome. The assembly is still being updated and the current release is therefore likely to be incomplete in some regions and will change in the next release. A more complete draft assembly and draft annotation will be released on Phytozome later in 2010.

4. The draft 8X assembly consists of 6043 genome scaffolds covering 693 Mbp. This total is somewhat inflated due to the fact that approximately 20% of the genome is currently assembling into two parallel haplotypes (both included in the 693 Mbp) due to very high heterozygosity in some regions of the E. grandis genome. This will be resolved in the next release of the genome assembly.

The initial analysis of a high quality draft E. grandis genome sequence will be published in 2011. The principal investigators and collaborators of the E. grandis Genome Project intend to publish genome-wide analyses of features such as genes, protein families, metabolic pathways, non-coding RNA and repetitive DNA in the main genome paper, associated papers and in subsequent publications. Interested persons are encouraged to contact the principle investigators (Zander Myburg, Dario Grattapaglia or Jerry Tuskan) to coordinate collaborative efforts aimed at producing such publications.

We also invite members of the Eucalyptus research community and all other interested persons to register as members on the EUCAGEN website.

By Zander Myburg – EUCAGEN COORDINATOR

Photo: Eucalyptus grandis (Maranoa Gardens, Melbourne) (© HelloMojo, Wikipedia).

Peach Genome Released: “un jus de première qualité”

April 11th, 2010

Peach flowerThe draft of the genome sequence of Peach (Prunus persica) (cultivar ‘Lovell’) has been released on April 1st by the International Peach Genome Initiative. This consortium, under the direction of Drs Bryon Sosinski, Ignazio Verde and Daniel Rokhsar, includes numerous researchers from countries around the globe including the US, Italy, Spain and Chile.

The genome is available online at the Genome Database for Rosaceae, JGI Phytozome and Istituto di Genomica Applicata (IGA).

Peach (Prunus persica) is considered one of the genetically most well characterized species in the Rosaceae, and it has distinct advantages that make it suitable as a model genome species for Prunus as well as for other species in the Rosaceae. While some Prunus species, such as cultivated plums and sour cherries, are polyploid, peach is a diploid with n = 8 and has a comparatively small genome currently estimated to be ~220-230 Mbp based upon the peach v1.0 assembly.

Assembly v1.0 currently consists of 8 pseudomolecules (scaffolds) representing the 8 chromosomes. The genome sequencing consisted of approximately 7.7 fold whole genome shotgun sequencing employing the Sanger methodology, and was assembled using Arachne. The assembled peach scaffolds cover nearly 99% of the peach genome, with over 92% having confirmed orientation. To further validate the quality of the assembly, 74,757 Prunus ESTs were queried against the genome — only ~2% were missing;  28,689 transcripts and 27,852 genes have been predicted.

Together, with the poplar and euclayptus genomes, the peach genome is being used to identify genes that are critical for deciduous tree growth and development.

Photo: Peach flower (© FM).