Early Inflorescence Development in the Grasses
ORIGINAL RESEARCH ARTICLE published: 23 July 2013 doi: 10.3389/fpls.2013.00250 Early inflorescence development in the grasses (Poaceae) Elizabeth A. Kellogg 1*,PauloE.A.S.Camara2, Paula J. Rudall 3, Philip Ladd 4, Simon T. Malcomber 5, Clinton J. Whipple 6 and Andrew N. Doust 7 1 Department of Biology, University of Missouri-St. Louis, St. Louis, MO, USA 2 Department of Botany, University of Brasilia, Brasilia, Brazil 3 Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, UK 4 School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia 5 Department of Biology, California State University-Long Beach, Long Beach, CA, USA 6 Department of Biology, Brigham Young University, Provo, UT, USA 7 Department of Botany, Oklahoma State University, Stillwater, OK, USA Edited by: The shoot apical meristem of grasses produces the primary branches of the inflorescence, Jill C. Preston, University of controlling inflorescence architecture and hence seed production. Whereas leaves are Vermont, USA produced in a distichous pattern, with the primordia separated from each other by an angle Reviewed by: of 180◦, inflorescence branches are produced in a spiral in most species. The morphology Barbara Ambrose, The New York Botanical Garden, USA and developmental genetics of the shift in phyllotaxis have been studied extensively in Peter K. Endress, University of maize and rice. However, in wheat, Brachypodium, and oats, all in the grass subfamily Zurich, Switzerland Pooideae, the change in phyllotaxis does not occur; primary inflorescence branches are Robert Baker, University of produced distichously. It is unknown whether the distichous inflorescence originated at Wyoming, USA the base of Pooideae, or whether it appeared several times independently.
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