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Thursday, 2013/09/12 | 08:21:11

Transposable elements (TEs) can drive evolution by creating genetic and epigenetic variation. Although examples of adaptive TE insertions are accumulating, proof that epigenetic information carried by such “domesticated” TEs has been coopted to control host gene function is still limited.

Tuesday, 2013/09/10 | 08:31:44

In this commentary, Rob Kulathinal describes two papers from the Perrimon laboratory, each describing a new online resource that can assist geneticists with the design of their RNAi experiments

Tuesday, 2013/09/10 | 08:30:06

Parasite infection impacts population dynamics through effects on fitness and fecundity of the individual host. In addition to the known roles of environmental factors, host susceptibility to parasites has a genetic basis that has not been well characterized. We previously mapped quantitative trait loci (QTL) for susceptibility to rat tapeworm (Hymenolepis diminuta) infection in Tribolium castaneum using dominant AFLP markers

Sunday, 2013/09/08 | 13:56:18

A consortium of researchers from Australia's The University of Queensland and the Queensland Department of Agriculture, Fisheries and Forestry (DAFF Qld) and China's Beijing Genomics Institute has discovered that sorghum, a drought-tolerant African crop, has more genetic variation than previously reported.

Wednesday, 2013/09/04 | 08:32:59

The plant hormone salicylic acid (SA) plays critical roles in plant defense, stress responses, and senescence. Although SA biosynthesis is well understood, the pathways by which SA is catabolized remain elusive. Here we report the identification and characterization of an SA 3-hydroxylase (S3H) involved in SA catabolism during leaf senescence.

Sunday, 2013/09/01 | 08:23:18

Geneticists at the University of California, Riverside (UCR) have discovered a transposon that benefits its host organism. Transposons, also called jumping genes, are DNA elements that multiply and change their location within an organism's genome.

Wednesday, 2013/08/21 | 08:29:51

Polyadenylation of pre-mRNAs is critical for efficient nuclear export, stability, and translation of the mature mRNAs, and thus for gene expression. The bulk of pre-mRNAs are processed by canonical nuclear poly(A) polymerase (PAPS). Both vertebrate and higher-plant genomes encode more than one isoform of this enzyme, and these are coexpressed in different tissues. However, in neither case is it known whether the isoforms fulfill different functions or polyadenylate distinct subsets of pre-mRNAs

Friday, 2013/08/16 | 07:59:30

Researchers from Dartmouth College, the Salk Institute for Biological Studies, and Australian National University have discovered a group of stress-related proteins that explains how plants avoid being sunburned under intense light, a finding that could help biotechnologists develop crops that can better cope with hotter, drier conditions

Wednesday, 2013/08/14 | 08:12:31

The objective of this study was to use next-generation sequencing technologies to dissect quantitative trait loci (QTL) for southern root-knot nematode (RKN) resistance into individual genes in soybean. Two hundred forty-six recombinant inbred lines (RIL) derived from a cross between Magellan (susceptible) and PI 438489B (resistant) were evaluated for RKN resistance in a greenhouse and sequenced at an average of 0.19× depth

Tuesday, 2013/08/13 | 08:16:34

Rice blast is one of the important diseases of rice which can be effectively managed by the deployment of resistance genes. Pi -ta is one of the major blast resistant genes effective against pathogen populations in different parts of India . We analysed allelic variants of Pi-ta from 48 rice lines selected after phenotyping of 529 rice landraces across three eco-geo graphical blast hot spot regions.

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