Plant hybridization articles within Nature Communications

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  • Article
    | Open Access

    Orzya meridionalis is a wild rice species that has reproductive isolation with Asian cultivated rice. Here, the authors report the cloning of the second locus controlling hybrid male sterility between the two species and show the encoded toxin-antidote system provides stacked reproductive isolation for maintaining species identity.

    • Shimin You
    • , Zhigang Zhao
    •  & Jianmin Wan

  • Article
    | Open Access

    Liu et al. show that zygotic remodelling of paternal DNA methylation is matched to maternal levels in hybrids and that parental-specific epigenomes are re-established during embryogenesis, highlighting genetic control of epigenetic inheritance.

    • Qian Liu
    • , Xuan Ma
    •  & Dao-Xiu Zhou

  • Article
    | Open Access

    Genetic dissection of hybrids is more difficult than inbreds as nonadditive effects are involved. Here, the authors report a pipeline for joint analysis of phenotypes, effects, and generations and demonstrate its usefulness in identification of loci associated with quality traits and improving predict accuracy in genomic selection of hybrid rice.

    • Lanzhi Li
    • , Xingfei Zheng
    •  & Zhongli Hu

  • Article
    | Open Access

    The effect of sequence polymorphisms on recombination is not fully understood. Here, the authors develop the seed-typing method to map crossovers (COs) by sequencing and show that COs occur preferentially within polymorphic hotspots and that this effect depends on the mismatch repair gene MSH2 in Arabidopsis.

    • Maja Szymanska-Lejman
    • , Wojciech Dziegielewski
    •  & Piotr A. Ziolkowski

  • Article
    | Open Access

    During meiosis, the number and distribution of crossovers (COs) are tightly controlled, but the mechanistic basis of this control is unclear. Here, by combining experimental data and mathematical modeling, the study advocates a CO patterning model via coarsening through the diffusion of HEI10 along the synaptonemal complex.

    • Stéphanie Durand
    • , Qichao Lian
    •  & Raphael Mercier

  • Article
    | Open Access

    Unilaterial cross-incompatibility (UCI) systems are regulated by a male-female gene pair that are genetically linked, but no pair of the male and female determinants has been isolated so far. Here, the authors report the cloning of a pair of pectin methylesterases encoding genes at the Ga2 locus confer UCI in maize.

    • Zhibin Chen
    • , Zhaogui Zhang
    •  & Huabang Chen

  • Article
    | Open Access

    The development of hybrid wheat cultivars is hampered by the lack of an effective way to control male fertility in breeding lines. Here, the authors report the identification of two restorer-of-fertility genes Rf1 and Rf3 that can restore fertility of wheat plants carrying Triticum timopheevii-type cytoplasmic male sterility.

    • Joanna Melonek
    • , Jorge Duarte
    •  & Ian Small

  • Article
    | Open Access

    Chinese chestnut is widely cultivated for nut production and harbors value as a genetic resource for restoration of American and European chestnut trees destroyed by chestnut blight. Here, the authors reveal the genomic basis of homoploid hybrid speciation within Castanea spp. and find the nonrandom distribution of reproductive barrier loci based on a high-quality reference genome.

    • Yongshuai Sun
    • , Zhiqiang Lu
    •  & Hui Ma

  • Article
    | Open Access

    Developing hybrid rice cultivars requires time consuming random crossing. Here, the authors develop a new next generation sequencing-based quantitative trait locus mapping method to dissect heterotic gene OsMADS1 and demonstrate the feasibility of pyramiding two genes to achieve large heterotic effect.

    • Changsheng Wang
    • , Shican Tang
    •  & Bin Han

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