Oryza longistaminata
Encyclopedia
Oryza longistaminata A. Chev.
Auguste Jean Baptiste Chevalier
Auguste Jean Baptiste Chevalier was a French botanist, taxonomist, and explorer of tropical Africa, especially of French colonial empire Africa and Côte d'Ivoire. He also explored and collected plants in South America and tropical Asia...

 & Röhr, can be found in the USA where it is regarded as a noxious weed, and in the Nylsvley Nature Reserve
Nylsvley Nature Reserve
Nylsvley Nature Reserve is a protected area, lying on a seasonally-inundated floodplain and located near Mookgophong in the Limpopo Province of South Africa. It has been declared a Ramsar wetland site because of its international conservation importance...

 in South Africa. Its common names are Longstamen Rice and Red Rice

Host resistance gene, Xa21,from Oryza longistaminata is integrated into the genome of Oryza sativa
Oryza sativa
Oryza sativa, commonly known as Asian rice, is the plant species most commonly referred to in English as rice. Oryza sativa is the cereal with the smallest genome, consisting of just 430Mb across 12 chromosomes...

for the broad range resistance of rice blight disease caused by Xanthomonas oryzae pv. oryzae
Xanthomonas oryzae
Xanthomonas oryzae is a species of proteobacteria. The major host of the bacteria is rice .The species contains two pathovars which are non-European: Xanthomonas oryzae pv. oryzae and Xanthomonas oryzae pv...

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