Genome-Wide Identification and Salt Stress-Responsive Expression Analysis of the <i>GmPLATZ</i> Gene Family in Soybean (<i>Glycine max</i> L.)

Genome-Wide Identification and Salt Stress-Responsive Expression Analysis of the <i>GmPLATZ</i> Gene Family in Soybean (<i>Glycine max</i> L.)

The plant-specific <i>PLATZ</i> transcription factors play crucial roles in plant growth, development, and responses to abiotic stresses. However, despite their functional significance, <i>PLATZ</i> genes remain poorly characterized in soybeans. In this study, we conducted a...

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Bibliographic Details
Main Authors: Mingyu Wang, Zheyun Guan, Songquan Wu, Jingyong Zhang, Chunjing Lin, Yanyan Sun, Mingzhe Shen, Chunbao Zhang
Format: Article
Language:English
Published: MDPI AG 2025-06-01
Series:Plants
Subjects:
soybean
<i>PLATZ</i> gene family
genome-wide analysis
expression profile
salt stress
Online Access:https://www.mdpi.com/2223-7747/14/13/2004
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Summary:The plant-specific <i>PLATZ</i> transcription factors play crucial roles in plant growth, development, and responses to abiotic stresses. However, despite their functional significance, <i>PLATZ</i> genes remain poorly characterized in soybeans. In this study, we conducted a genome-wide analysis of the <i>GmPLATZ</i> gene family and investigated their expression profiles under salt stress. We identified a total of 29 <i>GmPLATZ</i> genes in the soybean genome and systematically analyzed their physicochemical properties, conserved domains, evolutionary relationships, cis-acting elements, and expression regulation patterns. Subcellular localization predictions indicated nuclear localization for most <i>GmPLATZs</i>, except for <i>GmPLATZ5</i> and <i>GmPLATZ14</i>, which showed dual chloroplast–nuclear localization. A gene family expansion analysis indicated that 21 segmental duplication events were the primary driver of <i>GmPLATZ</i> diversification. A phylogenetic analysis classified the <i>GmPLATZ</i> genes into four subgroups, while gene structure and motif analyses revealed conserved zinc-binding domains and identified multiple cis-acting elements associated with light responsiveness, hormone signaling, and stress responses. Expression profiling showed tissue-specific expression patterns, with 13 <i>GmPLATZ</i> genes differentially expressed under salt stress, including root-preferential members (e.g., <i>GmPLATZ1</i>, <i>GmPLATZ10</i>) and leaf-preferential members (e.g., <i>GmPLATZ8</i>, <i>GmPLATZ9</i>). This study provides a theoretical basis for further investigation of <i>GmPLATZ</i> gene functions in soybean development and stress tolerance.
ISSN:2223-7747

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