Displaying publications 61 - 80 of 107 in total

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  1. Singh R, Low ET, Ooi LC, Ong-Abdullah M, Ting NC, Nagappan J, et al.
    Nature, 2013 Aug 15;500(7462):340-4.
    PMID: 23883930 DOI: 10.1038/nature12356
    A key event in the domestication and breeding of the oil palm Elaeis guineensis was loss of the thick coconut-like shell surrounding the kernel. Modern E. guineensis has three fruit forms, dura (thick-shelled), pisifera (shell-less) and tenera (thin-shelled), a hybrid between dura and pisifera. The pisifera palm is usually female-sterile. The tenera palm yields far more oil than dura, and is the basis for commercial palm oil production in all of southeast Asia. Here we describe the mapping and identification of the SHELL gene responsible for the different fruit forms. Using homozygosity mapping by sequencing, we found two independent mutations in the DNA-binding domain of a homologue of the MADS-box gene SEEDSTICK (STK, also known as AGAMOUS-LIKE 11), which controls ovule identity and seed development in Arabidopsis. The SHELL gene is responsible for the tenera phenotype in both cultivated and wild palms from sub-Saharan Africa, and our findings provide a genetic explanation for the single gene hybrid vigour (or heterosis) attributed to SHELL, via heterodimerization. This gene mutation explains the single most important economic trait in oil palm, and has implications for the competing interests of global edible oil production, biofuels and rainforest conservation.
  2. Cyranoski D
    Nature, 2008 May 22;453(7194):435.
    PMID: 18497781 DOI: 10.1038/453435a
  3. Abbott A, Cyranoski D, Masood E
    Nature, 2006 Nov 2;444(7115):20-1.
    PMID: 17080056
  4. Volkov I, Banavar JR, He F, Hubbell SP, Maritan A
    Nature, 2005 Dec 1;438(7068):658-61.
    PMID: 16319890
    The recurrent patterns in the commonness and rarity of species in ecological communities--the relative species abundance--have puzzled ecologists for more than half a century. Here we show that the framework of the current neutral theory in ecology can easily be generalized to incorporate symmetric density dependence. We can calculate precisely the strength of the rare-species advantage that is needed to explain a given RSA distribution. Previously, we demonstrated that a mechanism of dispersal limitation also fits RSA data well. Here we compare fits of the dispersal and density-dependence mechanisms for empirical RSA data on tree species in six New and Old World tropical forests and show that both mechanisms offer sufficient and independent explanations. We suggest that RSA data cannot by themselves be used to discriminate among these explanations of RSA patterns--empirical studies will be required to determine whether RSA patterns are due to one or the other mechanism, or to some combination of both.
  5. Cyranoski D
    Nature, 2005 Aug 11;436(7052):884-5.
    PMID: 16136648
  6. Nature, 2005 Aug 11;436(7052):754.
    PMID: 16094324
  7. Cyranoski D
    Nature, 2005 Aug 4;436(7051):620-1.
    PMID: 16079812
  8. Cyranoski D
    Nature, 2003 Jul 10;424(6945):118.
    PMID: 12853917
  9. Mims FM
    Nature, 1997 Nov 20;390(6657):222-3.
    PMID: 9384366 DOI: 10.1038/36715
  10. Swinbanks D
    Nature, 1997 Sep 25;389(6649):321.
    PMID: 9311764
  11. Nature, 1997 Sep 25;389(6649):315.
    PMID: 9311758
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