Natural variation at the DEP1 locus enhances grain yield in rice

Huang, X. and Qian, Q. and Liu, Z. and et al, . (2009) Natural variation at the DEP1 locus enhances grain yield in rice. Nature Genetics, 41. pp. 494-497.

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Grain yield is controlled by quantitative trait loci (QTLs) derived from natural variations in many crop plants. Here we report the molecular characterization of a major rice grain yield QTL that acts through the determination of panicle architecture. The dominant allele at the DEP1 locus is a gain-of-function mutation causing truncation of a phosphatidylethanolamine-binding protein-like domain protein. The effect of this allele is to enhance meristematic activity, resulting in a reduced length of the inflorescence internode, an increased number of grains per panicle and a consequent increase in grain yield. This allele is common to many Chinese high-yielding rice varieties and likely represents a relatively recent introduction into the cultivated rice gene pool. We also show that a functionally equivalent allele is present in the temperate cereals and seems to have arisen before the divergence of the wheat and barley lineages.

Item Type: Article
Additional Information: This research was supported by grants from the Ministry of Science and Technology of China (2009CB941501, 2007AA10Z190 and 2006AA10A101), Chinese Academy of Sciences (KSCX2-YW-N-050) and National Natural Science Foundation of China.
Author Affiliation: The State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, National Centre for Plant Gene Research, Beijing, China
Subjects: Crop Improvement > Genetics/Genomics
Divisions: Other Crops
Depositing User: Mr Siva Shankar
Date Deposited: 18 Mar 2014 10:23
Last Modified: 18 Mar 2014 10:23
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