The Genetic Basis of Crossing Barriers Between Oryza perennis Subsp. barthii and its Related Taxa

Chu, Yaw-En; Oka, Hiko-Ichi

doi:10.2307/2406720

Cited by 16 publications

(9 citation statements)

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“…Most of the species used in this study had the same ploidy levels and chromosome number, and similar DNA content, with the exception of O. australiensis. Moreover, crosses between O. sativa and O. longistaminata can be performed reciprocally and genetic analysis can be carried out after the F 2 generation; although the induction of flowering and crossing under artificial conditions is not easy, it is nevertheless feasible (Chu and Oka, 1970). Cleary, we have identified a valuable model system for investigation of the reproductive barrier between interspecific Oryza crosses, which allows analysis of the role of developmental phase transition in the endosperm separately from abnormal mitotic activity in the endosperm syncytium.…”

Section: Discussionmentioning

confidence: 99%

“…, 2003; von Wangenheim and Peterson, 2004). In order to understand the role of the endosperm in preventing the hybridization of undesirable species combinations, endosperm breakdown has been investigated in crosses between plants of different ploidy levels within the same species, or between different species (Cooper and Brink, 1945; Chu and Oka, 1970; Birchler, 1993; Scott et al. , 1998; Kinoshita, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…, 2002). Similarly, in interspecific crosses in rice and Avena , the endosperm often displays opposing phenotypes depending on the combination of the species involved and also the direction of the parental cross (Chu and Oka, 1970; Nishiyama and Yabuno, 1978). In the genus Arabidopsis, crosses between female diploid A. thaliana and male tetraploid A. arenosa show a prolonged endosperm syncytium stage and an enhanced rate of mitotic division (Bushell et al.…”

Section: Introductionmentioning

confidence: 99%

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Rice interspecies hybrids show precocious or delayed developmental transitions in the endosperm without change to the rate of syncytial nuclear division

et al. 2011

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SUMMARYIn angiosperms, interspecific crosses often display hybrid incompatibilities that are manifested as underproliferation or over-proliferation of endosperm. Recent analyses using crosses between Arabidopsis thaliana and its related species with different ploidy levels have shown that interspecific hybridization causes delayed developmental transition and increased mitotic activity in the endosperm. In this study, we investigated endosperm development in interspecific crosses between diploid Oryza species. In a cross between female O. sativa and male O. punctata, we found that the hybrid endosperm was reduced in size and this cross was associated with precocious developmental transition. By contrast, the cross between O. sativa and O. longistaminata generated enlarged hybrid endosperm at the mid-point of seed development and this cross was associated with delayed developmental transition. Subsequently, the hybrid endosperm displayed a shriveled appearance at the seed maturation stage. We found that the accumulation of storage products and the expression patterns of several marker genes were also altered in the hybrid endosperm. By contrast, the rate of syncytial mitotic nuclear divisions was not significantly affected. The gene OsMADS87 showed a maternal origin-specific expression pattern in rice endosperm, in contrast to its Arabidopsis homologue PHERES1, which shows paternal origin-specific expression. OsMADS87 expression was decreased or increased depending on the type of developmental transition change in the hybrid rice endosperm. Our results indicate that one of the interspecies hybridization barriers in Oryza endosperm is mediated by precocious or delayed developmental alterations and de-regulation of OsMADS87, without change to the rate of syncytial mitotic nuclear division in the hybrid endosperm.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rice interspecies hybrids show precocious or delayed developmental transitions in the endosperm without change to the rate of syncytial nuclear division

et al. 2011

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“…Mismatch of trans- and cis- components and/or misregulation of the imprinted-gene-regulated genes between species may result in disruption of the balance and impair endosperm development, which eventually causes hybrid lethality. Examples of hybrid inviability controlled by multiple loci have been found in several plants ( Chu and Oka, 1970 ; Burkart-Waco et al, 2012 ; Garner et al, 2015 ; Rebernig et al, 2015 ). Cloning of these genes will broaden our understanding of the molecular control of hybrid inviability.…”

Section: Genetic and Molecular Regulation Of Postzygotic Rimentioning

confidence: 99%

Evolution and Molecular Control of Hybrid Incompatibility in Plants

2016

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Postzygotic reproductive isolation (RI) plays an important role in speciation. According to the stage at which it functions and the symptoms it displays, postzygotic RI can be called hybrid inviability, hybrid weakness or necrosis, hybrid sterility, or hybrid breakdown. In this review, we summarized new findings about hybrid incompatibilities in plants, most of which are from studies on Arabidopsis and rice. Recent progress suggests that hybrid incompatibility is a by-product of co-evolution either with “parasitic” selfish elements in the genome or with invasive microbes in the natural environment. We discuss the environmental influences on the expression of hybrid incompatibility and the possible effects of environment-dependent hybrid incompatibility on sympatric speciation. We also discuss the role of domestication on the evolution of hybrid incompatibilities.

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“…Les hybridations avec 0 longistaminata sont de nature différente car les 2 espèces partagent le même génome; néanmoins, 0 longistaminata manifeste une très forte barrière reproductive nécessitant également la récupération des embryons pour obtenir des hybrides F1. 0 longistaminata présente par ailleurs 2 originalités biologiques dans le genre Oryza : allogamie stricte grâce à un système d'autoincompatibilité et pérennité par l'expression de rhizomes L'analyse génétique et cytologique des croisements FI s'accorde avec un modèle basé sur la complémentation de gènes létaux dominants D1 (0 longistaminata) et D2 ( O sativa), provoquant une détérioration plus ou moins précoce suivant le dosage de ces gènes dans l'albumen FI (Chu et Oka, 1970). La composante essentielle de l'isolement reproductif entre les 2 espèces agit au niveau des hybridations interspécifiques car la fraction de graines normales obtenues sur les hybrides FI au cours des recroisements permet d'obtenir facilement les back cross de première génération et des suivantes (Causse et Ghesquière, 1991).…”

Section: Matériel Et Méthodes Développement Du Matériel Végétalunclassified

Suivi des introgressions dans les croisements interspécifiques chez le riz : utilisation des marqueurs moléculaires

Ghesquière¹,

Panaud²,

Marmey³

et al. 1994

Genet. Sel. Evol.

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-La diversité génétique des espèces sauvages de riz est d'un grand intérêt en amélioration des plantes. Malgré de fortes barrières reproductives, des hybrides interspécifiques peuvent être obtenus grâce à la récupération des embryons par culture in vitro et être recroisés ensuite pour introduire des caractères utiles dans les riz cultivés. Au fur et à mesure que la carte de liaison génétique RFLP (polymorphisme de longueur de fragment de restriction) devient de plus en plus saturée, les marqueurs moléculaires constituent un nouvel outil puissant pour analyser et comprendre les mécanismes de la recombinaison dans les croisements éloignés. Trois exemples d'application des marqueurs moléculaires au suivi des introgressions sont présentés à partir d'activités développées à l'ORSTOM (Institut français de recherche scientifique pour le développement en coopération) de Montpellier ou de collaborations avec l'IRRI (Institut international de recherche sur le riz, Philippines) et l'Université Cornell (États-Unis). Ils concernent l'analyse de générations précoces ou de lignées isogéniques développées avec des espèces sauvages de riz possédant le même génome que le riz cultivé (O longistaminata) ou des génomes cytogénétiquement différents (O brachyantha, génome F) et (O australiensis, génome E). riz / hybridation interspécifique / marqueur moléculaire / recombinaison / carte génétique Summary-Analysis of introgressions in interspecific crosses of rice: utilization of molecular markers. Genetic diversity of wild rice species is of great interest to breeding. Although there are strong reproductive barriers, interspecific hybrids can be obtained through embryo rescue, and back-crossed to introduce useful characters into cultivated rice. As the rice RFLP (restriction fragment length polymorphism) linkage map becomes more and more saturated, mapped molecular markers provide a new and powerful tool to investigate and understand the recombination process in distant crosses. Three different examples of application of molecular markers for introgression monitoring are presented. They include work at ORSTOM (Institut frangais de recherche scientifique pour le développement en cooperation) Montpellier and collaborative research with IRRI

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The Genetic Basis of Crossing Barriers Between Oryza perennis Subsp. barthii and its Related Taxa

Cited by 16 publications

References 0 publications

Rice interspecies hybrids show precocious or delayed developmental transitions in the endosperm without change to the rate of syncytial nuclear division

Rice interspecies hybrids show precocious or delayed developmental transitions in the endosperm without change to the rate of syncytial nuclear division

Evolution and Molecular Control of Hybrid Incompatibility in Plants

Suivi des introgressions dans les croisements interspécifiques chez le riz : utilisation des marqueurs moléculaires

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