January 2011

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  • Patterns of resource allocation in a dioecious species

    Patterns of resource allocation in a dioecious species

    Patterns of resource allocation in a dioecious species Resource allocation between vegetative and reproductive growth will vary over time, and dioecious species may also adopt different strategies for allocation between male and female plants. Sanchez Vilas and Pannell show that males and females of the annual Mercurialis annua differ in temporal patterns of resource allocation […] More

  • Phylogenetics of Ornithogaloideae

    Phylogenetics of Ornithogaloideae

    Phylogenetics of Ornithogaloideae The taxonomy of subfamily Ornithogaloideae (Hyacinthaceae) has been a matter of controversy in recent decades, with several contradictory taxonomic treatments having been proposed. Martínez-Azorín et al.  present a phylogenetic analysis of Ornithogaloideae based on a combination of plastid and nuclear regions and a detailed morphological study. A new taxonomic arrangement is presented […] More

  • Oxidative stress responses in two lichen phycobionts

    Oxidative stress responses in two lichen phycobionts

    Oxidative stress responses in two lichen phycobionts The epiphytic lichen Ramalina farinacea contains two genetically distinct Trebouxia phycobionts. Del Hoyo et al.  analyse the effects of oxidative stress on the photosynthetic behaviour in each isolated alga and observe a better physiological response to stress in one of them, which may reflect its greater capacity to […] More

  • Sunflower nitrogen-stress response and gene expression

    Sunflower nitrogen-stress response and gene expression

    Sunflower nitrogen-stress response and gene expression The hybrid sunflower Helianthus anomalus is endemic to desert sand dunes, which have lower nutrient availability than the habitats of its parental species. Brouillette and Donovan use a cDNA microarray to compare the gene expression of H. anomalus to that of its parents under contrasting nutrient treatments, and identify […] More

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    An orchid that persuades wasps to date outside their species

    Margaret Moran at My Growing Passion has put up a photo of Cryptostylis subulata the Large Tongue Orchid that she has growing in her garden. Her post includes an explanation of how it reproduces. It relies on wasps to pollinate the flower, so to pull in the wasp close enough it mimics a female wasp. […] More

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    The Scientist Gardener on Innovation versus Investment

    There’s a good post by the Scientist Gardener on Investing in Innovation. It’s a response to James (who has Giant Corn) who commented on Research Funding in a post that I would have linked to at the time if I’d been up to speed after Christmas. He makes the point that it’s not enough to […] More

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    Is the earliest wine getting earlier and earlier?

    There’s been a rash of stories about how new grape varieties will be needed to fight disease if wineries are to keep flowing. As far as I can tell, because I haven’t seen anyone link to the paper, it’s based on Genetic structure and domestication history of the grape and Open Access paper in PNAS […] More

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    What should link to where?

    I’ve linked to stories from two sites recently. As well as the blog posts, something else happens to them when they reach the RSS feed, Facebook and Twitter accounts; the headlines shouldn’t link to the blog post here. Instead, when the filter works, clicking on the headline will take you directly to the linked story. […] More

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    Are radishes the perfect astronauts?

    A common question is if you were to leave a spaceship without a spacesuit, what kill you? Would you boil in the lack of pressure, freeze, explode, asphyxiate or what? How long could you survive before death? A story from NewScientist, say that the answer for plants is they’d dehydrate, but they could survive for […] More

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