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E.g., Wessler, regeneration, PubMed ID 17578919.

expand all sections collapse all sections  Reference "Cytokinin oxidase regulates rice grain production"
Reference ID 10993
Title Cytokinin oxidase regulates rice grain production
Source Science, 2005, vol. 309, pp. 741-745
Authors (10)
Abstract Most agriculturally important traits are regulated by genes known as
quantitative trait loci (QTLs) derived from natural allelic variations. We here
show that a QTL that increases grain productivity in rice, Gn1a, is a gene for
cytokinin oxidase/dehydrogenase (OsCKX2), an enzyme that degrades the
phytohormone cytokinin. Reduced expression of OsCKX2 causes cytokinin
accumulation in inflorescence meristems and increases the number of reproductive
organs, resulting in enhanced grain yield. QTL pyramiding to combine loci for
grain number and plant height in the same genetic background generated lines
exhibiting both beneficial traits. These results provide a strategy for
tailormade crop improvement.
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