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Related Experiment Video

Updated: Jan 29, 2026

Lateral Root Inducible System in Arabidopsis and Maize

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

The distribution pattern of endopolyploidy in maize.

Silu Li^1,2, Linsan Liu^1,2, Ting Li^1,2

¹The Key Laboratory of Biology and Genetics Improvement of Maize in Arid Area of Northwest Region, Ministry of Agriculture, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.

TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik

|February 9, 2019

Summary

Endopolyploidy, a process of DNA replication without cell division, is common in maize organs and tissues. This study mapped its distribution and identified genes linked to this important plant development phenomenon.

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Scalable Transfection of Maize Mesophyll Protoplasts

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Published on: June 23, 2023

Area of Science:

Plant Biology
Genetics
Cell Biology

Background:

Endopolyploidy, arising from DNA endoreplication, is a key process in plant development.
Understanding its distribution in maize is crucial for crop improvement.

Purpose of the Study:

To systematically investigate the distribution patterns of endopolyploidy in various maize organs and tissues across different developmental stages.
To analyze the influence of environmental stress and population structure on endopolyploidy.
To identify genetic factors associated with endopolyploidy in maize.

Main Methods:

Flow cytometry was employed to measure DNA content (C value) in diverse maize tissues.
Analysis included various developmental stages, grain development, roots under stress, and a large panel of inbred lines.
Genome-wide association study (GWAS) was conducted to identify significant SNPs and candidate genes.

Main Results:

Endopolyploidy was prevalent in most maize organs, with the endosperm exhibiting the highest C value.
Ploidy levels generally increased during tissue development, except in leaves.
Drought stress significantly impacted root endopolyploidization, and a positive correlation was found between C value and plant/root length.
GWAS identified 9 significant SNPs and 8 candidate genes involved in cell cycle regulation and DNA replication.

Conclusions:

Endopolyploidy is a widespread phenomenon in maize, occurring across various organs and developmental stages.
Its distribution is not strictly correlated with population structure but is influenced by stress and positively associated with growth parameters.
The study identified key genes potentially regulating endopolyploidy, offering targets for future research and breeding.