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 Curently online :  12
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Thursday, 2016/02/04 | 06:06:36

Genotyping-by-sequencing (GBS) has emerged as a useful genomic approach for exploring genome-wide genetic variation. However, GBS commonly samples a genome unevenly and can generate a substantial amount of missing data. These technical features would limit the power of various GBS-based genetic and genomic analyses. Here we present software called IgCoverage for in silico evaluation of genomic coverage through GBS with an individual or a pair of restriction enzymes on one sequenced genome and report a new set of 21 restriction enzyme combinations that can be applied to enhance GBS applications.

Wednesday, 2016/02/03 | 08:36:13

Lipoxygenases (LOX) are non-heme metal enzymes, which oxidize polyunsaturated fatty acids to hydroperoxides. All LOX belong to the same gene family, and they are widely distributed. LOX of animals, plants and prokaryotes contain Fe as the catalytic metal, whereas fungi express LOX with Fe or with Mn. Little is known about metal selection by LOX and the adjustment of the redox potentials of their protein-bound catalytic metals. Thirteen 3D structures of animal, plant, and prokaryotic FeLOX are available but none of MnLOX.

Tuesday, 2016/02/02 | 08:00:57

Retrotransposons with long terminal repeats (LTRs) are the most abundant transposable elements in plant genomes. A novel LTR retrotransposon named RTPOSON primarily occurs in the genus Oryza and in several species of the Poaceae family. RTPOSON has been identified in the Ty1-copia group of retrotransposons because two of its open reading frames encode an uncharacterized protein and UBN2_2 and zinc knuckle, respectively.

Monday, 2016/02/01 | 08:11:51

Rice cultivars exhibiting durable resistance to blast, the most important rice fungal disease provoking up to 30 % of rice losses, are very rare and searching for sources of such a resistance represents a priority for rice-breeding programs. To this aim we analyzed Gigante Vercelli (GV) and Vialone Nano (VN), two temperate japonica rice cultivars in Italy displaying contrasting response to blast, with GV showing a durable and broad-spectrum resistance, whereas VN being highly susceptible.

Sunday, 2016/01/31 | 04:19:55

Animals play an important role in the transport of nutrients, but this role has diminished because many of the largest animals have gone extinct or experienced massive population declines. Here, we quantify the movement of nutrients by animals in the land, sea, rivers, and air both now and prior to their widespread reductions. The capacity to move nutrients away from hotspots decreased to 6% of past values across land and ocean.

Sunday, 2016/01/31 | 04:17:39

Phytosterols are minor seed constituents in oilseed rape which have recently drawn wide-interest from the food and nutrition industry due to their health benefit in lowering LDL cholesterol in humans. To understand the genetic basis of phytosterol content and its relationship with other seed quality traits in oilseed rape, QTL mapping was performed in a segregating DH population derived from the cross of two winter oilseed rape varieties, Sansibar and Oase, termed SODH population.

Friday, 2016/01/29 | 10:54:32

Phoma stem canker, caused by Leptosphaeria maculans, is a disease of worldwide importance on oilseed rape (Brassica napus). Quantitative trait loci (QTL)-mediated resistance against L. maculans in B. napus is considered to be race non-specific and potentially durable. Identification and evaluation of QTL for resistance to L. maculans is important for breeding oilseed rape cultivars with durable resistance. An oilseed rape mapping population was used to detect QTL for resistance against L. maculans in five winter oilseed rape field experiments under different environments.

Thursday, 2016/01/28 | 08:05:29

Strong support for the theory of kin selection can come from predicting outcomes under circumstances of within-family conflict. Genes inherited from mothers (matrigenes) and fathers (patrigenes) usually work harmoniously in the offspring. However, kin selection theory predicts these genes may be in conflict over interactions among relatives in which they are unequally represented (half-siblings)

Wednesday, 2016/01/27 | 07:31:20

Drought and salinity are the major threats to crop productivity at a worldwide scale. A fundamental portion of the plant response to these environmental stresses occurs at the cell membrane, where the molecular machinery to preserve cell turgor and the appropriate balance of intracellular ions is found. The C2-domain ABA-related (CAR) family of proteins contributes to these processes by delivering the regulatory proteins controlling this machinery from other cell compartments to the cell membrane.

Tuesday, 2016/01/26 | 07:54:44

In the present study, using a diploid potato mapping population and Diversity Array Technology (DArT) markers, we identified twelve quantitative trait loci (QTL) for tuber starch content on seven potato chromosomes: I, II, III, VIII, X, XI, and XII. The most important QTL spanned a wide region of chromosome I (42.0–104.6 cM) with peaks at 63 and 84 cM which explained 17.6 and 19.2 % of the phenotypic variation, respectively. ADP-glucose pyrophosphorylase (AGPase) is the key enzyme for starch biosynthesis.

 

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