Molecular relationships between Australian annual wild rice, Oryza meridionalis, and two related perennial forms

被引：39

作者：

Sotowa, Masahiro ^{[1
]}

Ootsuka, Kenta ^{[1
]}

Kobayashi, Yuu ^{[1
]}

Hao, Yin ^{[2
]}

Tanaka, Katsunori ^{[3
]}

Ichitani, Katsuyuki ^{[4
]}

Flowers, Jonathan M. ^{[5
,6
]}

Purugganan, Michael D. ^{[5
,6
]}

Nakamura, Ikuo ^{[7
]}

Sato, Yo-Ichiro ^{[8
]}

Sato, Tadashi ^{[9
]}

Crayn, Darren ^{[10
]}

Simon, Bryan ^{[11
]}

Waters, Daniel L. E. ^{[12
]}

Henry, Robert J. ^{[13
]}

Ishikawa, Ryuji ^{[1
]}

机构：

[1] Hirosaki Univ, Fac Agr & Life Sci, Hirosaki, Aomori 0368561, Japan

[2] Iwate Univ, United Grad Sch Agr Sci, Morioka, Iwate 0208550, Japan

[3] Hirosaki Univ, Fac Humanities, Hirosaki, Aomori 0368561, Japan

[4] Kagoshima Univ, Fac Agr, Kagoshima 8900065, Japan

[5] NYU, Dept Biol, New York, NY 10003 USA

[6] NYU, Ctr Genom & Syst Biol, New York, NY 10003 USA

[7] Chiba Univ, Grad Sch Hort, Matsudo, Chiba 02718510, Japan

[8] Res Inst Humanity & Nat, Kyoto 6038047, Japan

[9] Tohoku Univ, Grad Sch Life Sci, Sendai, Miyagi 9808577, Japan

[10] James Cook Univ, Australian Trop Herbarium, Cairns, Qld 6811, Australia

[11] Brisbane Bot Gardens Mt Coot Tha, Queensland Herbarium, Brisbane, Qld 4066, Australia

[12] So Cross Univ, Southern Cross Plant Sci, Lismore, NSW 2480, Australia

[13] Univ Queensland, Queensland Alliance Agr & Food Innovat, Brisbane, Qld 4072, Australia

来源：

RICE | 2013年 / 6卷

基金：

日本学术振兴会;

关键词：

Genetic divergence; Australia; Perennial; Annual; Oryza rufipogon; Oryza meridionalis; PHYLOGENETIC-RELATIONSHIPS; EVOLUTIONARY RELATIONSHIPS; CULTIVATED RICE; ORIGIN; GENOME; RESISTANCE; GENE; SEQUENCES; STRAINS; HISTORY;

D O I：

10.1186/1939-8433-6-26

中图分类号：

S3 [农学（农艺学）];

学科分类号：

090104 [作物信息科学与技术];

摘要：

Background: The perennial, Oryza rufipogon distributed from Asia to Australia and the annual O. meridionalis indigenous to Australia are AA genome species in the Oryza. However, recent research has demonstrated that the Australian AA genome perennial populations have maternal genomes more closely related to those of O. meridionalis than to those found in Asian populations of O. rufipogon suggesting that the Australian perennials may represent a new distinct gene pool for rice. Results: Analysis of an Oryza core collection covering AA genome species from Asia to Oceania revealed that some Oceania perennials had organellar genomes closely related to that of O meridionalis (meridionalis-type). O. rufipogon accessions from New Guinea carried either the meridionalis-type or rufirpogon-type (like O. rufipogon) organellar genomes. Australian perennials carried only the meridionalis-type organellar genomes when accompanied by the rufipogon-type nuclear genome. New accessions were collected to better characterize the Australian perennials, and their life histories (annual or perennial) were confirmed by field observations. All of the material collected carried only meridionalis-type organellar genomes. However, there were two distinct perennial groups. One of them carried an rufipogon-type nuclear genome similar to the Australian O. rufipogon in the core collection and the other carried an meridionalis-type nuclear genome not represented in the existing collection. Morphologically the rufipogon-type shared similarity with Asian O. rufipogon. The meridionalis-type showed some similarities to O. meridionalis such as the short anthers usually characteristic of annual populations. However, the meridionalis-type perennial was readily distinguished from O. meridionalis by the presence of a larger lemma and higher number of spikelets. Conclusion: Analysis of current accessions clearly indicated that there are two distinct types of Australian perennials. Both of them differed genetically from Asian O. rufipogon. One lineage is closely related to O. meridionalis and another to Asian O. rufipogon. The first was presumed to have evolved by divergence from O. meridionalis becoming differentiated as a perennial species in Australia indicating that it represents a new gene pool. The second, apparently derived from Asian O. rufipogon, possibly arrived in Australia later.

引用

页数：18

共 41 条

[1]

Population genetic structure of wild rice Oryza glumaepatula distributed in the Amazon flood area influenced by its life-history traits [J].