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Saturday, 2015/05/09 | 03:59:06

Antimicrobials are used in livestock production to maintain health and productivity. These practices contribute to the spread of drug-resistant pathogens in both livestock and humans, posing a significant public health threat. We present the first global map (228 countries) of antibiotic consumption in livestock and conservatively estimate the total consumption in 2010 at 63,151 tons.

Friday, 2015/05/08 | 08:10:51

Common bean (Phaseolus vulgaris L.) is an important grain legume and an essential protein source for human nutrition in developing countries. Angular leaf spot (ALS) caused by the pathogen Pseudocercospora griseola (Sacc.) Crous and U. Braun is responsible for severe yield losses of up to 80 %. Breeding for resistant cultivars is the most ecological and economical means to control ALS and is particularly important for yield stability in low-input agriculture

Thursday, 2015/05/07 | 08:11:28

The Rp1 locus of maize is a complex resistance gene (R-gene) cluster that confers race-specific resistance to Puccinia sorghi, the causal agent of common leaf rust. Rp1 NB-LRR disease resistance genes were isolated from two Rp1 haplotypes (HRp1-B and HRp1-M) and two maize inbred lines (B73 and H95). Sixty-one Rp1 genes were isolated from Rp1-B, Rp1-M, B73 and H95 with a PCR-based approach. The four maize lines carried from 12 to 19 Rp1 genes. From 4 to 9 of the identified Rp1 genes were transcribed in the four maize lines.

Wednesday, 2015/05/06 | 13:55:08

Genome-wide association studies (GWAS) have been used extensively to identify allelic variation for genes controlling important agronomic and nutritional traits in plants. Provitamin A (proVA) enhancing alleles of lycopene epsilon cyclase (LCYE) and β-carotene hydroxylase 1 (CRTRB1), previously identified through candidate-gene based GWAS, are currently used in CIMMYT’s maize breeding program.

Wednesday, 2015/05/06 | 08:24:04

Fusarium graminearum is now recognized as a primary pathogen of soybean, causing root, seed rot and seedling damping-off in North America. In a preliminary screen, ‘Wyandot’ and PI 567301B were identified with medium and high levels of partial resistance to F. graminearum, respectively. The objective of this study was to characterise resistance towards F. graminearum using 184 recombinant inbred lines (RILs) derived from a cross of ‘Wyandot’ × PI 567301B.

Tuesday, 2015/05/05 | 08:36:55

The development of two-line hybrid rice has done great contribution to the food security. It is imperative to study the male sterility mechanism of rice photo-thermo sensitive genic male sterile (PTGMS) line which is the core component of two-line hybrid rice. Zhu1S is a rice thermo-sensitive genic male sterile line used frequently as female parent in two-line hybrid seed production.

Tuesday, 2015/05/05 | 08:26:08

Submergence is an escalating problem in many rice producing areas. A submergence tolerance gene, SUB1, derived from FR13A was previously introduced into six mega varieties through marker assisted backcrossing (MABC) with the final product selected at the BC2 or BC3 generation. Their pheno-type was similar to the original varieties, but they could withstand complete inundation for up to 2 or 3 weeks. Several of these varieties have been released in South and Southeast Asia

Monday, 2015/05/04 | 08:03:53

A team of researchers has discovered the gene involved in determining the melting point of cocoa butter, an important trait for food and pharmaceutical products. The team discovered TcSAD1, the gene primarily involved in the synthesis of cocoa butter and is responsible for its melting point.

Sunday, 2015/05/03 | 05:28:29

Cyclic electron flow around photosystem I (CEF) is critical for balancing the energy budget of photosynthesis, but its regulation is not well understood. Our results provide evidence that hydrogen peroxide, which is produced as a result of imbalances in chloroplast redox state, acts as a signaling agent to activate CEF in higher plants in vivo.

Saturday, 2015/05/02 | 19:05:12

Damage-associated molecular patterns (DAMPs), released from host tissues as a consequence of pathogen attack, have been proposed as endogenous activators of immune responses in both animals and plants. Oligogalacturonides (OGs), oligomers of α-1,4–linked galacturonic acid generated in vitro by the partial hydrolysis of pectin, have been shown to function as potent elicitors of immunity when they are applied exogenously to plant tissues.

 

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