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Latest Oryza sativa Stories

Generating A Genome To Feed The World
2014-07-30 03:50:10

By Shelley Littin, University of Arizona An international team of scientists led by the UA has sequenced the genome of African rice. The genetic information will enhance scientists' and agriculturalists' understanding of the growing patterns of African rice, as well as enable the development of new rice varieties that are better able to cope with increasing environmental stressors to help solve global hunger challenges. The paper, "The genome sequence of African rice (Oryza...

Farmers Increasingly Plagued By 'Weedy' Strains Of Rice
2013-07-18 12:36:46

Brett Smith for redOrbit.com - Your Universe Online Over the past decade or so the de-domestication of rice has increasingly plagued farmer's fields, with "weedy" strains of the grain cutting agricultural yields by as much as 80 percent. Being domesticated thousands of years ago in both Africa and Asia, the de-domestication of rice also provided an interesting case study for two biologists at Washington University in St. Louis who recently published a genetic analysis of both types of...

Some Rice Species Rendered Sterile Due To Genes
2012-09-13 13:32:44

System of 3 genes prevents hybrid rice from reproducing, new study shows Researchers have identified a set of three genes that are responsible for hybrid sterility in rice, or the inability of many hybrid rice species to pass their genes on to the next generation. These findings inform a model that suggests how such hybrid sterility is maintained across rice species, and they may lead to the genetic improvement of rice as a food stock. The research is published in the 14 September issue...

2011-12-12 12:45:09

BGI, the world's largest genomics organization, announced that a study on resequencing 50 accessions of cultivated and wild rice was published online today in Nature Biotechnology. The study provides one of the largest genome variation data sets for wild and cultivated rice, which is valuable for breeding and for identifying agronomically important genes in rice. This data also yields new insights for geneticists and biologists to deeply explore the domestication history of cultivated rice....

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2011-05-03 08:10:00

Rice originated in China, a team of genome researchers has concluded in a study tracing back thousands of years of evolutionary history through large-scale gene re-sequencing. Their findings, which appear in the latest issue of the Proceedings of the National Academy of Sciences (PNAS), indicate that domesticated rice may have first appeared as far back as approximately 9,000 years ago in the Yangtze Valley of China. Previous research suggested domesticated rice may have two points of...

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2010-09-05 12:01:51

Scientists seek to develop a rice strain that is better capable of withstanding drought and poorer soils and produces higher yields than current forms of domesticated rice.A University of Arizona-led consortium has been awarded $9.9 million from the National Science Foundation to develop a deeper understanding of the wild relatives of cultivated rice with the ultimate goal of creating next-generation varieties that are better capable of withstanding drought and poorer soils and produce higher...

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2010-07-08 08:39:11

Simple genetic changes make plants suitable for cultivation, but domestication wasn't always quick or easy. Anyone who has seen teosinte, the wild grass from which maize (corn) evolved, might be forgiven for assuming many genetic changes underlie the transformation of one plant to the other. However, a method for exploring the genetics of domestication called Quantitative Trait Locus (QTL) mapping has revealed that only modest modifications are needed to convert a wild plant to a crop plant....

2009-07-13 14:00:00

A $1.5 million grant from the National Science Foundation will allow University of Arizona researchers to unlock the genetic code of West African cultivated rice "“ and along the way to gain knowledge that could help commercial rice strains to better withstand dwindling resources, a changing climate and increased demand. BIO5 Institute members Rod A. Wing, professor of plant sciences and Steve Rounsley, research professor of plant sciences, are co-primary investigators on the new...

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2009-03-05 09:32:49

Scientists across the world are building an extensive repository of genetically modified rice plants in the hope of understanding the function of the approximately 57,000 genes that make up the genome of Oryza sativa. The International Rice Functional Genomics Consortium recently announced the public availability of more than 200,000 rice mutant lines, which represent mutations in about half of the known functional genes mapped for rice to date. * Researchers have estimated the number of...

2008-09-30 03:00:20

By Zeng, Zhi Zhang, Han; Zhang, Tao; Chen, Jie Yu ABSTRACT A modified headspace solid-phase microextraction (SPME) method in conjunction with gas chromatography-mass spectrometry (GC- MS) has been used for the analysis of the flavor volatiles in three rice cultivars with low levels of digestible protein during cooking. Altogether, 77 volatile compounds were identified, of which 13 components were not previously reported in rice. A total of 61, 71, and 74 peaks, respectively, were assigned...


Word of the Day
cruet
  • A vial or small glass bottle, especially one for holding vinegar, oil, etc.; a caster for liquids.
This word is Middle English in origin, and ultimately comes from the Old French, diminutive of 'crue,' flask.
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