Subterms
Survival at geographic range edges, where organisms are often at the limits of their physiological tolerances, can trigger unusual responses in reproduction. Sinclair et al. describe the first observations of pseudoviviparous shoots in the marine angiosperm, Posidonia australis. Unfertilized flowers cheated and ‘switched’ to plantlet development. Multilocus genotypes showed these plantlets were genetically identical to […] More
Under self-pollination induction three genotypes of P. rufum develop seeds from both meiotic and aposporous embryo sacs. More
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
The presence and activity of small RNA pathways in plant gametophytes remains largely unexplored – which is unexpected in view of the pivotal role of small RNAs in animal germline development. More
Over the years, hundreds of papers have been published describing the genetic changes that occur during evolution of plants, and the differences evident between individual species. An equally high number of papers has been published about the definition of species, their separation and naming. Many have joined discussions of where and why new species form […] More
The Amazon is the greatest river system on the planet. Twenty per cent of the world’s freshwater enters the oceans through the river basin. It’s an immense amount of water, but the flow isn’t constant. The Amazon regularly bursts its banks with the seasons and the consequences are massive. River banks that were land can […] More
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