Rice production in the United States by 382 pounds per acre. Six states now account for over 99% of all rice grown in the US. These are Arkansas, California, Louisiana, Mississippi, Missouri and Texas. As of 2003, Arkansas topped the list with a production level of 213 million bushels against a total production of 443 million bushels in the country, and the annual per capita consumption reported is in excess of 28 pounds. The earliest types grown in Carolina were the African "Oryza glaberrima", the prized "Carolina Gold". Asian "Oryza sativa" was "Carolina White". After the total decline of rice cultivation in Carolina, "Carolina Gold" is
Helitron (biology) Helitron (biology) Helitrons are one of the three groups of eukaryotic class 2 transposable elements (TEs) so far described. They are the eukaryotic rolling-circle transposable elements which are hypothesized to transpose by a rolling circle replication mechanism via a single-stranded DNA intermediate. They were first discovered in plants ("Arabidopsis thaliana" and "Oryza sativa") and in the nematode "Caenorhabditis elegans", and now they have been identified in a diverse range of species, from protists to mammals. Helitrons make up a substantial fraction of many genomes where non-autonomous elements frequently outnumber the putative autonomous partner. Helitrons seem to have a major role