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Science 8 November 2002:
Vol. 298. no. 5596, p. 1131
DOI: 10.1126/science.298.5596.1131i
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This Week in Science

Plant meristems function as undifferentiated sources for cells that go on to form shoots, inflorescence, and flowers. In maize, the grain develops out of a series of increasingly defined meristems. Chuck et al. (p. 1238) analyzed a maize mutation known as branched silkless 1 (bd1) and show that it affects the identity of spikelet meristems and causes indeterminate branches to form instead. Similarities between the maize bd1 gene and genes in other grasses suggest early evolution of the distinctive grain inflorescence architecture.

Figure 3
CREDIT: CHUCK ET AL.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)