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Lateral Root Inducible System in Arabidopsis and Maize

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

Robust non-syntenic gene expression patterns in diverse maize hybrids during root development.

Jutta A Baldauf¹, Lucia Vedder², Heiko Schoof²

¹Institute for Crop Science and Resource Conservation, Crop Functional Genomics, University of Bonn, Bonn, Germany.

Journal of Experimental Botany

|October 23, 2019

Summary

Maize hybrids show robust gene expression in primary roots, with non-syntenic genes aiding developmental adaptation and hybrid vigor. This highlights the role of genomic diversity in maize root development.

Keywords:

Allele-specific gene expression heterosis hybrid maize non-additivity non-syntenic primary root development

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Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

Published on: February 14, 2020

Area of Science:

Plant Genomics
Developmental Biology
Maize Genetics

Background:

Maize (Zea mays L.) inbred lines possess unique genomic diversity.
Primary root development involves significant transcriptomic changes.
Hybrid gene expression patterns are crucial for understanding plant performance.

Purpose of the Study:

To investigate developmental and genotype-dependent regulation of primary root transcriptomes in maize hybrids and inbred lines.
To determine the robustness of hybrid-associated gene expression patterns to developmental changes.
To explore the role of non-syntenic genes in maize root development and hybrid vigor.

Main Methods:

Transcriptomic analysis of primary roots from a diverse panel of maize F1-hybrids and their parental inbred lines.
Comparison of gene expression patterns (differential, non-additive, allele-specific) during primary root development.
Identification and analysis of non-syntenic genes and their association with conserved expression patterns.

Main Results:

Hybrid-associated gene expression patterns (differential, non-additive, allele-specific) are robust to developmental fluctuations in primary roots.
Non-syntenic genes, which evolved after maize-sorghum divergence, are enriched in these conserved expression patterns.
A significant proportion of non-syntenic genes contribute to the conservation of gene expression during root development.

Conclusions:

Non-syntenic genes play a role in the developmental adaptation of maize primary roots.
The enrichment and conservation of non-syntenic genes may contribute to the superior performance of maize hybrids.
Genomic diversity and non-syntenic gene evolution are key factors in maize root development and hybrid vigor.