Characterization and Transcriptome Analysis of Maize Small-Kernel Mutant smk7a in Different Development Stages.

ABSTRACT: The kernel serves as a storage organ for various nutrients and determines the yield and quality of maize. Understanding the mechanisms regulating kernel development is important for maize production. In this study, a small-kernel mutant smk7a of maize was characterized. Cytological observation suggested that the development of the endosperm and embryo was arrested in smk7a in the early development stage. Biochemical tests revealed that the starch, zein protein, and indole-3-acetic acid (IAA) contents were significantly lower in smk7a compared with wild-type (WT). Consistent with the defective development phenotype, transcriptome analysis of the kernels 12 and 20 days after pollination (DAP) revealed that the starch, zein, and auxin biosynthesis-related genes were drama

SUBMITTER: Wang J 

PROVIDER: S-EPMC9866416 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature