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Tuesday, 2015/06/23 | 08:02:35

A team of researchers from Canada and United Kingdom led by Dr. Jared Simpson conducted a study to examine the capability of Oxford Nanopore's MinIONTM as a sequencer device. The nanopore device is a tiny genome sequencer that has the ability to generate vast amounts of data and read long stretches of genome to allow reconstruction.

Monday, 2015/06/22 | 08:17:15

Huanglongbing (HLB) is a vector-transmitted bacterial infection of citrus trees that poses a major threat to the citrus industry in Florida, Texas, and California. Current control strategies that focus on the vector, the Asian citrus psyllid Diaphorina citri, are usually initiated when the trees become symptomatic, anywhere from 10 mo to several years after initial infection.

Sunday, 2015/06/21 | 15:37:35

Matrix metalloproteinases (MMPs) have been characterized in mammals and are shown to play roles in physiological and pathological processes. Although MMPs in plant species have been identified, the function of MMPs in biotic stress responses remains elusive. Fengming Song of Zhejiang University in China identified five MMP genes in the tomato genome.

Saturday, 2015/06/20 | 06:20:32

GRAS transcription factors are proteins that play diverse roles in plant development. However, the functions of some GRAS genes identified in rice are unknown, especially those related to rice drought resistance. Lijun Luo of the Huazhong Agricultural University in China isolated a novel GRAS transcription factor gene from rice, OsGRAS23.

Friday, 2015/06/19 | 08:10:34

High-throughput genotyping arrays provide a standardized resource for plant breeding communities that are useful for a breadth of applications including high-density genetic mapping, genome-wide association studies (GWAS), genomic selection (GS), complex trait dissection, and studying patterns of genomic diversity among cultivars and wild accessions. We have developed the CottonSNP63K, an Illumina Infinium array containing assays for 45,104 putative intraspecific single nucleotide polymorphism (SNP) markers for use within the cultivated cotton species Gossypium hirsutum L

Thursday, 2015/06/18 | 08:14:04

Stalk rots are important biotic constraints to sorghum production worldwide. Several pathogens may be associated with the disease, but Macrophomina phaseolina and Fusarium thapsinum are recognized as the major causal organisms. The diseases become more aggressive when drought and high-temperature stress occur during grain filling. Progress in genetic improvement efforts has been slow due to lack of effective phenotyping protocol and the strong environmental effect on disease incidence and severity. Deployment of modern molecular tools is expected to accelerate efforts to develop resistant hybrids.

Wednesday, 2015/06/17 | 08:06:28

Herbivory is one of the most important processes in the biosphere. When plants germinated underneath the soil or fallen leaves undergo skotomorphogenesis, they are especially prone to a vast range of seed predators and herbivorous arthropods. How greening plants protect themselves against these foes was thus far largely unknown. Here, we describe a mechanism how etiolated seedlings deter arthropod devourers.

Tuesday, 2015/06/16 | 08:02:30

Cloning and functional characterization of plant pathogen inducible promoters is of great significance for their use in the effective management of plant diseases. The rice gene CYP76M7 was up regulated at 24, 48, and 72 hours post inoculation (hpi) with two isolates of Magnaporthe oryzae Mo-ei-11 and Mo-ni-25. In this study, the promoter of CYP76M7 gene was cloned from rice cultivar HR-12, characterized and functionally validated.

Monday, 2015/06/15 | 09:38:42

Double-stranded DNA is one of the stiffest polymers in biology, resisting both bending and twisting over hundreds of base pairs. However, tightly bent DNA loops are formed by proteins that turn off (repress) genes in bacteria. It has been shown that “architectural” proteins capable of kinking any DNA molecule without sequence preference facilitate this kind of gene repression.

Sunday, 2015/06/14 | 09:00:12

Seed size is closely related to fitness of wild plants, and its modification has been a key recurring element in domestication of seed/grain crops. In sorghum, a genomic and morphological model for panicoid cereals, a rich history of research into the genetics of seed size is reflected by a total of 13 likelihood intervals determined by conventional QTL (linkage) mapping in 11 nonoverlapping regions of the genome.

 

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