Spatial Regulation of Silicon Accumulation in Peduncle Confers Sheathed Spike in Barley.

Abstract excerpt

Peduncle, the uppermost internode in cereals, connects the stem to the inflorescence and is critical for the transport of water, nutrients and photosynthetic assimilates. While peduncle length associates with plant height and its elongation is primarily regulated by phytohormones, we report a previously unrecognized mechanism involving the spatial distribution of silicon (Si). We identified a barley mutant,...

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