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Large and variable genome size unrelated to serpentine adaptation but supportiv...
Bourne, Elizabeth C.; Mina, Diogo; Gonçalves, Susana C.; Loureiro, João; Freitas, Helena; Muller, Ludo A.H.Estimations of genome size and its variation can provide valuable information regarding the genetic diversity of organisms and their adaptation potential to heterogeneous environments. We used flow cytometry to characterize the variation in genome size among 40 isolates of Cenococcum geophilum, an ectomycorrhizal fungus with a wide ecological and geographical distribution, obtained from two serpentine and two n...
A Ni hyperaccumulator and a congeneric non-accumulator reveal equally effective...
Boas, Mariana Vilas; Gonçalves, Susana C.; Portugal, Antonio; Freitas, Helena; Gonçalves, M. TeresaThe defense hypothesis is commonly used to explain the adaptive role ofmetal hyperaccumulation. We tested this hypothesis using two Brassicaceae congeneric species: Alyssum pintodasilvae, a Ni hyperaccumulator, and the non-accumulator Alyssum simplex both growing on serpentine soils in Portugal. Artificial diet disks amended with powdered leaves from each plant species were used to compare the performance (mort...
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