Subterms
Glacial-interglacial climate cycles have far-reaching consequences for ecosystems and it is widely recognised that regions with a history of unstable climates have few endemic species and are susceptible to the establishment of exotic, non-native species from comparatively stable regions. Sandel et al. tested these hypotheses with a global dataset of grass species distributions. Grass endemism […] More
Superior drought survival is expected to result in reduced productivity and competitive ability, but this expectation has seldom been tested in herbaceous perennial species. Balachowski et al. quantified seasonal growth, functional traits, and drought survival strategies in eight California perennial grasses. Contrary to common assumptions, they found that summer dormancy, an adaptation to Mediterranean-type climates, […] More
Phylogenetic reconstruction techniques reveal evidence for a two-lineage polyphyletic ancestry of Sorghum within the larger Andropogoneae. More
This study uses flow sorting and FISH techniques to further the development of molecular tools to progress introgression breeding in wheat More
Orinus as a model system: multiple approaches & lines of evidence are applied to determine species boundaries for plants in the Qinghai–Tibet Plateau. More
Under self-pollination induction three genotypes of P. rufum develop seeds from both meiotic and aposporous embryo sacs. More
Most of the numerous and remarkable range disjunctions across the southern oceans are probably the result of occasional long-distance dispersal, rather than of vicariance. Linder and Barker study the grass subfamily Danthonioideae, which probably reached its current global distribution by a number of long-distance dispersal events during the Neogene, and show that such dispersal is […] More
No, this is not an item about M People, an ‘English house music band which formed in 1990 and achieved success throughout most of the 1990s’, nor about using profane language… Anyway, how would any of that be relevant to a straitlaced, sober, serious botanical news round-up that is the hallmark of a P. Cuttings item? […] More
Africa was apparently colonized by grasses twice from two different sources, Europe and East Asia. More
Of all the incredible diversity of plants on this planet, arguably the grass family (the Poaceae) is one of the greatest of Nature’s gifts to Mankind. Not only does it feed over half of the world’s population as cereals, but as amenity grasslands and sports fields it allows us to relax with a wide range […] More
In grasses, self-incompatibilty (SI) is based on two loci, S and Z, but the mechanisms are much less well understood relative to other gametophytic SI systems. Klass et al. review recent progress towards elucidating grass SI, and by identifying Ca binding and kinase domains from subtracted Lolium stigma cDNA libraries they strengthen the case for involvement […] More
Disproving a C4 reversion in Eragrostis Eragrostis walteri (Poaceae), a grass with C3 foliar anatomy in an otherwise C4 genus and subfamily, has long been thought to be an exceptional example of the rare evolutionary reversion from C4 to C3 photosynthesis. Ingram et al. refute this hypothesis through phylogenetic analyses of DNA sequence data, which demonstrate […] More
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