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The Control of Spikelet Meristem Identity by the branched silkless1 Gene in Maize

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Science  08 Nov 2002:
Vol. 298, Issue 5596, pp. 1238-1241
DOI: 10.1126/science.1076920

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Abstract

Most of the world's food supply is derived from cereal grains that are borne in a unique structure called the spikelet, the fundamental unit of inflorescence architecture in all grasses.branched silkless1 (bd1) is a maize mutation that alters the identity of the spikelet meristem, causing indeterminate branches to form in place of spikelets. We show that bd1encodes a putative ERF transcription factor that is conserved in different grasses and is expressed in a distinct domain of the spikelet meristem. Its expression pattern suggests that signaling pathways regulate meristem identity from lateral domains of the spikelet meristem.

  • * To whom correspondence should be addressed. E-mail: gchuck{at}nature.berkeley.edu

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