Transcriptomic Analysis of Leaves from Two Maize Hybrids Under Heat Stress During the Early Generative Stage DOI Open Access
Siqi Zhang, Lei Sun,

Chunhong Ma

et al.

Genes, Journal Year: 2025, Volume and Issue: 16(5), P. 480 - 480

Published: April 24, 2025

Background: High temperatures during the early generative stage significantly threaten maize productivity, yet molecular basis of heat tolerance remains unclear. Methods: To elucidate mechanisms in maize, two hybrids—ZD309 (heat-tolerant) and XY335 (heat-sensitive)—were selected for integrated transcriptomic physiological analyses. The plants were subjected to high-temperature treatments (3–5 °C above ambient field temperature) 0, 1, 3, 5, 7 days, with controls grown under natural conditions. Physiological indices, including Superoxide dismutase (SOD) activity, proline (PRO), malondialdehyde (MDA), soluble sugar, protein content, measured. Results: Transcriptome analysis identified 1595 differentially expressed genes (DEGs) (509 up- 1086 down-regulated) 1526 DEGs ZD309 (863 663 down-regulated), most pronounced changes occurring on day 5. Key enriched galactose metabolism carbohydrate catabolism, whereas exhibited rapid activation oxidative stress cell wall integrity pathways. Mfuzz time-series categorized from into six clusters each. Weighted gene co-expression network (WGCNA) 10 hub involved ubiquitin thioesterase activity RNA modification, suggesting protein-level regulatory roles. Conclusions: This study reveals distinct transcriptional dynamics between heat-tolerant heat-sensitive varieties, providing candidate breeding thermotolerant advancing our understanding responses critical reproductive stages.

Language: Английский

Understanding heat-shock proteins’ abundance and pivotal function under multiple abiotic stresses DOI

Prabhat Kumar,

Debashis Paul,

Sunita Jhajhriya

et al.

Journal of Plant Biochemistry and Biotechnology, Journal Year: 2024, Volume and Issue: 33(4), P. 492 - 513

Published: Nov. 7, 2024

Language: Английский

Citations

4
Impact of High-Temperature Stress on Maize Seed Setting: Cellular and Molecular Insights of Thermotolerance DOI Open Access
Z. Hugh Fan, Hui Song, Meng Qi

et al.

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(3), P. 1283 - 1283

Published: Feb. 2, 2025

Global warming poses a significant threat to crop production and food security, with maize (Zay mays L.) particularly vulnerable high-temperature stress (HTS). This review explores the detrimental impacts of elevated temperatures on development across various growth stages, analyzed within source–sink framework, particular focus seed setting yield reduction. It provides broad analysis cellular molecular responses HTS, highlighting key roles plant hormone abscisic acid (ABA) signaling, calcium chloroplast, DNA damage repair (DDR) system in maize. HTS disrupts ABA signaling pathways, impairing stomatal regulation reducing water-use efficiency, while orchestrates by activating heat shock proteins other protective mechanisms. Chloroplasts, as central photosynthesis, are sensitive often exhibiting photosystem II chlorophyll degradation. Recent studies also highlight significance DDR system, genes like ZmRAD51C playing crucial maintaining genomic stability during reproductive organ development. under conditions emerges factor contributing reduced set, although precise mechanisms remain be fully elucidated. Furthermore, examines cutting-edge genetic improvement strategies, aimed at developing thermotolerant cultivars. These recent research advances underscore need for further investigation into basis thermotolerance open door future advancements breeding crops.

Language: Английский

Citations

0
A comprehensive review on rice responses and tolerance to salt stress DOI Creative Commons

Obed Kweku Sackey,

Naijie Feng, Y A Mohammed

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: March 31, 2025

The challenge of salinity stress significantly impacts global rice production, especially in coastal and arid regions where the salinization agricultural soils is on rise. This review explores complex physiological, biochemical, genetic mechanisms contributing to tolerance (Oryza sativa L.) while examining agronomic multidisciplinary strategies bolster resilience. Essential adaptations encompass regulation ionic balance, management antioxidants, adjustments osmotic pressure, all driven by genes such as OsHKT1;5 transcription factors like OsbZIP73. evolution breeding strategies, encompassing traditional methods cutting-edge innovations, has produced remarkable salt-tolerant varieties FL478 BRRI dhan47. advancements this field are enhanced including integrated soil management, crop rotation, chemical treatments spermidine, which through antioxidant activity transcriptional mechanisms. Case studies from South Asia, Sub-Saharan Africa, Middle East and, Australia demonstrate transformative potential utilizing varieties; however, challenges persist, polygenic nature tolerance, environmental variability, socioeconomic barriers. highlights importance collaborative efforts across various disciplines, merging genomic technologies, sophisticated phenotyping, inclusive practices foster climate-resilient sustainable cultivation. work seeks navigate complexities its implications for food security, employing inventive cohesive confront posed climate change.

Language: Английский

Citations

0
Transcriptomic Analysis of Leaves from Two Maize Hybrids Under Heat Stress During the Early Generative Stage DOI Open Access
Siqi Zhang, Lei Sun,

Chunhong Ma

et al.

Genes, Journal Year: 2025, Volume and Issue: 16(5), P. 480 - 480

Published: April 24, 2025

Background: High temperatures during the early generative stage significantly threaten maize productivity, yet molecular basis of heat tolerance remains unclear. Methods: To elucidate mechanisms in maize, two hybrids—ZD309 (heat-tolerant) and XY335 (heat-sensitive)—were selected for integrated transcriptomic physiological analyses. The plants were subjected to high-temperature treatments (3–5 °C above ambient field temperature) 0, 1, 3, 5, 7 days, with controls grown under natural conditions. Physiological indices, including Superoxide dismutase (SOD) activity, proline (PRO), malondialdehyde (MDA), soluble sugar, protein content, measured. Results: Transcriptome analysis identified 1595 differentially expressed genes (DEGs) (509 up- 1086 down-regulated) 1526 DEGs ZD309 (863 663 down-regulated), most pronounced changes occurring on day 5. Key enriched galactose metabolism carbohydrate catabolism, whereas exhibited rapid activation oxidative stress cell wall integrity pathways. Mfuzz time-series categorized from into six clusters each. Weighted gene co-expression network (WGCNA) 10 hub involved ubiquitin thioesterase activity RNA modification, suggesting protein-level regulatory roles. Conclusions: This study reveals distinct transcriptional dynamics between heat-tolerant heat-sensitive varieties, providing candidate breeding thermotolerant advancing our understanding responses critical reproductive stages.

Language: Английский

Citations

0