A single nucleotide substitution at the 3'-end of SBPase gene involved in Calvin cycle severely affects plant growth and grain yield in rice.

ABSTRACT:

Background

Calvin cycle plays a crucial role in carbon fixation which provides the precursors of organic macromolecules for plant growth and development. Currently, no gene involved in Calvin cycle has been identified in monocotyledonous plants through mutant or/and map-based cloning approach.

Results

Here, we isolated a low-tillering mutant, c6635, in rice (Oryza sativa). The mutant displayed light green leaves and intensely declined pigment contents and photosynthetic capacity at early growth stage. Moreover, its individual plant showed a much smaller size, and most individuals produced only two tillers. At mature stage, its productive panicles, grain number and seed setting rate were significantly decreased, which lead to a sharp reduction of the grain yield. We confirmed

SUBMITTER: Li C 

PROVIDER: S-EPMC7374905 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature