Differentiation of Morphological Traits and Genome-Wide Expression Patterns Between Rice Subspecies and

Overview

Journal Genes (Basel)

Publisher MDPI

Date 2023 Oct 28

PMID 37895320

Authors

Meixia Wang

Lei Huang

Yixuan Kou

Danqi Li

Wan Hu

Dengmei Fan

Shanmei Cheng

Yi Yang

Zhiyong Zhang

Affiliations

Soon will be listed here.

Abstract

Changes in gene expression patterns can lead to the variation of morphological traits. This phenomenon is particularly evident in recent evolution events such as crop domestication and responses to environmental stress, where alterations in expression levels can efficiently give rise to domesticated syndromes and adaptive phenotypes. Rice ( L.), one of the world's most crucial cereal crops, comprises two morphologically distinct subspecies, and . To investigate the morphological divergence between these two rice subspecies, this study planted a total of 315 landrace individuals of both and under identical cultivation conditions. Out of the 16 quantitative traits measured in this study, 12 exhibited significant differences between the subspecies. To determine the genetic divergence between and at the whole-genome sequence level, we constructed a phylogenetic tree using a resequencing dataset encompassing 95 rice landrace accessions. The samples formed two major groups that neatly corresponded to the two subspecies, and . Furthermore, neighbor-joining (NJ) trees based on the expression quantity of effectively expressed genes (EEGs) across five different tissues categorized 12 representative samples into two major clades aligning with the two subspecies. These results imply that divergence in genome-wide expression levels undergoes stabilizing selection under non-stressful conditions, with evolutionary trends in expression levels mirroring sequence variation levels. This study further supports the pivotal role of changes in genome-wide expression regulation in the divergence of the two rice subspecies, and .

Citing Articles

Molecular Characteristics and Expression Patterns of Carotenoid Cleavage Oxygenase Family Genes in Rice ( L.).

Dai H, Ai H, Wang Y, Shi J, Ren L, Li J Int J Mol Sci. 2024; 25(19).

PMID: 39408594 PMC: 11477027. DOI: 10.3390/ijms251910264.

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