Genetic Research and Breeding to Improve Stress Resistance in Rice

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Crop Genetics, Genomics and Breeding".

Deadline for manuscript submissions: closed (25 April 2025) | Viewed by 765

Special Issue Editor


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Guest Editor
College of Agriculture, Northeast Agricultural University, Harbin 150030, China
Interests: abiotic stress; gene mining; functional characterization; molecular markers; molecular breeding

Special Issue Information

Dear Colleagues,

Rice is one of the most essential staple crops globally; however, it faces increasing challenges due to climate change and various environmental stresses such as drought, salinity, and cold. Improving rice stress resistance is therefore of paramount importance. Recent advances in genetic research and molecular breeding have made significant strides in improving rice resilience under these adverse conditions.

This Special Issue seeks to compile cutting-edge research on the genetic and molecular mechanisms underlying rice stress resistance, including the identification and functional analysis of stress-responsive genes, molecular regulation, QTL mapping, and their practical applications in breeding. We invite original research articles and reviews covering areas such as gene discovery and functional validation, multi-omics, genome-wide association studies (GWASs), marker-assisted selection, and innovative breeding techniques, with the goal of advancing the development of rice varieties with enhanced stress tolerance.

Dr. Luomiao Yang
Guest Editor

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Keywords

  • rice
  • stress resistance
  • gene function
  • molecular breeding
  • QTL mapping
  • GWAS
  • molecular regulation
  • environmental stress

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Published Papers (1 paper)

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Research

19 pages, 6477 KiB  
Article
The m6A Methylation Profile Identified That OsHMT9.1 Deregulates Chromium Toxicity in Rice (Oryza sativa L.) Through Negative Regulatory Functions
by Yushan Hou, Xuejiao Kong, Jingwen Li, Changsheng Liu, Shuo Wang, Shupeng Xie, Jingguo Wang, Hualong Liu, Lei Lei, Hongliang Zheng, Wei Xin, Detang Zou, Zhonghua Wei and Luomiao Yang
Agriculture 2025, 15(5), 519; https://doi.org/10.3390/agriculture15050519 - 27 Feb 2025
Viewed by 504
Abstract
Chromium (Cr) is a toxic heavy metal that affects the food chain and poses a severe threat to food safety. Nonetheless, the N6-methyladenosine (m6A) transcriptomic regulation mechanisms of Cr tolerance genes in rice are not well understood. This study found that rice roots [...] Read more.
Chromium (Cr) is a toxic heavy metal that affects the food chain and poses a severe threat to food safety. Nonetheless, the N6-methyladenosine (m6A) transcriptomic regulation mechanisms of Cr tolerance genes in rice are not well understood. This study found that rice roots exhibit competitive and synergistic interactions with trace elements under Cr stress. Through a comprehensive transcriptome analysis of m6A methylation profiles under Cr stress, differentially methylated genes (DMGs) closely related to the plasma membrane, oxidoreductase activity, and protein phosphorylation were identified. A significant number of differentially expressed genes (DEGs) associated with heavy metal transporter domains, metalloproteases, metal ion transporters, and other cation transporters were strongly induced by Cr. Additionally, OsHMT9.1 exhibited extensive hypomethylation and up-regulation in Cr-exposed roots and was confirmed to be a regulatory factor for Cr tolerance. Enhanced plant resistance to Cr in oshmt9.1 was accompanied by increased levels of P, K, S, and Ca and decreased levels of Mn and Cu. These results suggest that knocking out OsHMT9.1 can promote Cr detoxification in rice by modulating the balance between Cr and other trace elements. These findings provide new insights into the molecular regulation and stress response of rice under Cr stress through transcriptome m6A methylation patterns. Full article
(This article belongs to the Special Issue Genetic Research and Breeding to Improve Stress Resistance in Rice)
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