Chloroplast genome of novel rice germplasm identified in Northern Australia

Brozynska, Marta, Omar, Ernnie Syafika, Furtado, Agnelo, Crayn, Darren, Simon, Bryan, Ishikawa, Ryuji, and Henry, Robert James (2014) Chloroplast genome of novel rice germplasm identified in Northern Australia. Tropical Plant Biology, 7 (3). pp. 111-120.

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Abstract

Rice (Oryza sativa L.) was probably domesticated from O. rufipogon in Asia in the last 10,000 years. Relatives of cultivated rice (A genome species of Oryza) are found in South America, Africa, Australia and Asia. These A genome species are the close relatives of cultivated rice and represent the effective gene pool for rice improvement. Members of this group in Northern Australia include, an annual species, O. meridionalis, and two recently distinguished perennial taxa, to one of which the name O. rufipogon has been applied and the other a perennial form of O. meridionalis. Comparison of whole chloroplast genome sequences of these taxa has now been used to determine the relationships between the wild taxa and cultivated rice. The chloroplast genomes of the perennials were both found to be distinguished from O. rufipogon from Asia by 124 or 125 variations and were distinguished from each other by 53 variations. These populations have remained isolated from the overwhelming genetic impact of the large domesticated rice populations in Asia and may be unique descendants of the gene pool from which domesticated rice arose. The conservation of this wild genetic resource may be critical for global food security.

Item ID: 35964
Item Type: Article (Research - C1)
ISSN: 1935-9764
Keywords: wild rice, oryza, chloroplast sequence, phylogeny
Additional Information:

This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are cited.

Funders: Rural Industries Research and Development Corporation
Date Deposited: 05 Nov 2014 04:03
FoR Codes: 06 BIOLOGICAL SCIENCES > 0604 Genetics > 060408 Genomics @ 40%
06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060309 Phylogeny and Comparative Analysis @ 50%
06 BIOLOGICAL SCIENCES > 0607 Plant Biology > 060799 Plant Biology not elsewhere classified @ 10%
SEO Codes: 82 PLANT PRODUCTION AND PLANT PRIMARY PRODUCTS > 8204 Summer Grains and Oilseeds > 820402 Rice @ 60%
96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960803 Documentation of Undescribed Flora and Fauna @ 30%
97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 10%
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