#amborellaceae

[botanytoo]

Amborella trichopoda helps reveal features of the first flowering plants

Amborella trichopoda helps reveal features of the first flowering plants

The flowering plants, or angiosperms, are the largest group of plants, containing over 300 000 living species.  All these species descend from a single, most recent common ancestor (MRCA), which probably lived some 225 to 140 million years ago. Its exact date is still rather uncertain!  Unfortunately, we don’t have a fossil of the MRCA of the living angiosperms, and even if we did, without a…

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[botanytoo]

Seed dormancy of the first flowering plants

Seed dormancy of the first flowering plants

Dormancy mechanisms act to optimise the timing of seed germination for many seed plants. Fogliani et al. demonstrate that the New-Caledonian shrub Amborella trichopoda exhibits a type of morphophysiological dormancy in which the mechanical resistance of surrounding fruit tissues plays a key role in the initial physiological phase. Reconstructed chronological sequence of Amborella trichopoda seed…

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