AI Article Synopsis
- Soil salinity significantly hinders plant growth, and the homeodomain-leucine zipper I (HD-Zip I) transcription factors, particularly GhHB4-like in cotton, play a key role in helping plants cope with salt stress.
- Ectopic expression of the GhHB4-like gene improved salt tolerance in Arabidopsis, while silencing it reduced tolerance, highlighting its important role in plant defense mechanisms.
- GhHB4-like activates the expression of GhNAC007, which is crucial for salt resistance, and may also regulate other related genes, suggesting a complex interaction that enhances the plant’s ability to withstand salinity.
Article Abstract
Soil salinity is a major environmental constraint to plant production. The homeodomain-leucine zipper I (HD-Zip I) transcription factors play a crucial role in growth, development and defence responses of plants. However, the function and underlying mechanism of HD-Zip I in cotton remain unexplored. This study investigated the role of GhHB4-like, a cotton HD-Zip I gene, in plant tolerance to salt stress. Ectopic expression of GhHB4-like gene enhanced, while its silencing impaired the salt tolerance in Arabidopsis. Y1H and effector-reporter assays revealed that GhHB4-like activated the expression of GhNAC007, which is essential for salt resistance. Knock-down of GhNAC007 also impaired salt resistance of cotton plants. In addition, GhHB4-like-GhNAC007 might have positively regulated the expression of GhMYB96 and ABA signalling-related genes, thereby leading to enhanced salt resistance. Interestingly, deleting motifs 3 and 5 near the 3'-end of GhHB4-like significantly enhanced GhNAC007 activation, indicating that both motifs acted as transcriptional activation inhibitory domains. The results suggest that GhHB4-like-GhNAC007 regulated plant response to salt stress, potentially by modulating GhMYB96 and ABA signalling-related genes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ijbiomac.2024.134857 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Ameliorating salt stress in tomato by a top-down approach of acclimatizing the rhizosphere microbiome.
Physiol Plant
January 2025
Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India.
Soil salinization adversely impacts plant and soil health. While amendment with chemicals is not sustainable, the application of bioinoculants suffers from competition with indigenous microbes. Hence, microbiome-based rhizosphere engineering, focussing on acclimatization of rhizosphere microbiome under selection pressure to facilitate plant growth, exhibits promise.
View Article and Find Full Text PDFInvestigation of the effect of salt stress on photosynthetic electron transport pathways in the Synechocystis PCC 6803 cyanobacterium.
Physiol Plant
January 2025
Institute of Plant Biology, HUN-REN Biological Research Centre, Szeged, Hungary.
Cyanobacteria are important model organisms for studying the process of photosynthesis and the effects of environmental stress factors. This study aimed to identify the inhibitory sites of NaCl in the whole photosynthetic electron transport in Synechocystis sp. PCC 6803 WT cells by using multiple biophysical tools.
View Article and Find Full Text PDFTranscriptomic and metabolomic analysis reveals the molecular mechanism of exogenous melatonin improves salt tolerance in eggplants.
Front Plant Sci
January 2025
Institute of Vegetables, Anhui Academy of Agricultural Sciences, Hefei, China.
Introduction: Melatonin significantly enhances the tolerance of plants to biotic and abiotic stress, and plays an important role in plant resistance to salt stress. However, its role and molecular mechanisms in eggplant salt stress resistance have been rarely reported. In previous studies, we experimentally demonstrated that melatonin can enhance the salt stress resistance of eggplants.
View Article and Find Full Text PDFEpitranscriptome profiles reveal participation of the RNA methyltransferase gene OsMTA1 in rice seed germination and salt stress response.
BMC Plant Biol
January 2025
State Key Laboratory of Crop Gene Resources and Breeding/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, South Zhong-Guan-Cun Street 12#, Beijing, 100081, China.
Background: RNA m6A methylation installed by RNA methyltransferases plays a crucial role in regulating plant growth and development and environmental stress responses. However, the underlying molecular mechanisms of m6A methylation involved in seed germination and stress responses are largely unknown. In the present study, we surveyed global m6A methylation in rice seed germination under salt stress and the control (no stress) using an osmta1 mutant and its wild type.
View Article and Find Full Text PDFSelection and validation of reference genes for the normalization of RT-qPCR gene expression data in Rheum tanguticum (Polygonaceae) under various abiotic stresses.
J Plant Physiol
January 2025
School of Life Sciences, Qinghai Normal University, Xining, 810008, China.
Rheum tanguticum, an endemic species from the Qinghai-Xizang Plateau, is a significant perennial and medicinal plant recognized for its robust resistance to abiotic stresses, including drought, cold, and salinity. To advance the understanding of stress-response mechanisms in R. tanguticum, this study aimed to establish a reliable set of housekeeping genes as references for normalizing RT-qPCR gene expression analyses.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!