Abstract:
:Domestication of cereal crops, such as maize, wheat and rice, had a profound influence on agriculture and the establishment of human civilizations. One major improvement was an increase in seed number per inflorescence, which enhanced yield and simplified harvesting and storage. The ancestor of maize, teosinte, makes 2 rows of kernels, and modern varieties make ∼8-20 rows. Kernel rows are initiated by the inflorescence shoot meristem, and shoot meristem size is controlled by a feedback loop involving the CLAVATA signaling proteins and the WUSCHEL transcription factor. We present a hypothesis that variation in inflorescence meristem size affects kernel row number (KRN), with the potential to increase yield. We also show that variation in the CLAVATA receptor-like protein FASCIATED EAR2 leads to increased inflorescence meristem size and KRN. These findings indicate that modulation of fundamental stem cell proliferation control pathways has the potential to enhance crop yields.
journal_name
Nat Genetjournal_title
Nature geneticsauthors
Bommert P,Nagasawa NS,Jackson Ddoi
10.1038/ng.2534subject
Has Abstractpub_date
2013-03-01 00:00:00pages
334-7issue
3eissn
1061-4036issn
1546-1718pii
ng.2534journal_volume
45pub_type
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