Article
The gymnosperm ortholog of the angiosperm central cell-specification gene CKI1 provides an essential clue to endosperm origin.
The New phytologist - 1 Jun 2018
Yuan Li, Liu Zhenning, Song Xiaoya, Jernstedt Judy, Sundaresan Venkatesan
Abstract excerpt
A defining feature of angiosperms is double fertilization involving the female gametophyte central cell and formation of a nutrient-storing tissue called endosperm. The route for the evolutionary origin of endosperm from a gymnosperm ancestor, particularly the molecular steps involved, has remained elusive. Recently, the histidine kinase gene Cytokinin-Independent 1 (CKI1), an activator of cytokinin signaling,...
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