Volume 19, Issue 2 (10-2024)
MGj 2024, 19(2): 91-102 |
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Tahmasebi M, Taheri H. Investigating the role of heat stress memory in the transcriptional response of some nitrate transporter genes in canola seedling roots using qRT-PCR. MGj 2024; 19 (2) : 2
URL: http://mg.genetics.ir/article-1-1861-en.html
URL: http://mg.genetics.ir/article-1-1861-en.html
Department of Plant Production and Genetics, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran
Abstract: (280 Views)
Nitrogen (N) is an essential macronutrient for plant growth and development, and its uptake by plants is significantly influenced by environmental stresses. Enhancing nitrogen use efficiency (NUE) is therefore crucial for minimizing nitrogen fertilizer consumption, mitigating environmental pollution, promoting plant growth, and optimizing agricultural management systems, especially in response to changing environmental stresses. Plants possess the ability to withstand potentially lethal high temperatures through thermopriming and the establishment of heat stress memory. However, the relationship between nitrogen uptake and the acquisition of thermal tolerance remains unclear. In this study, the hub proteins involved in nitrogen uptake in canola plants were first identified as having the most interactions among all nodes in the protein network, using four computational algorithms available in the CytoHubba software. Considering the negative impact of heat stress on nitrogen uptake by plants, the relationship between heat stress memory and the expression of key genes involved in nitrogen uptake was evaluated using the qRT-PCR technique. It was observed that heat stress and heat stress memory affected the expression levels of BnNRT1 (low-affinity nitrate transporter) and BnNRT2 (high-affinity nitrate transporter). The expression levels of these transporters increased after exposure to high temperatures following thermopriming, compared to non-primed plants. Therefore, it appears that the effects of heat stress memory on the expression of nitrogen transporter genes can be used as an efficient strategy for reducing the sensitivity threshold of rapeseed plants to recurrent high-temperature stresses by maintaining nitrogen uptake under heat stress.
Article number: 2
Keywords: Canola, Heat stress memory, Nitrogen transporter, Protein/Protein interaction, Thermopriming
Type of Study: Applicable |
Subject:
Subject 01
Received: 2024/05/23 | Accepted: 2024/09/22 | Published: 2024/11/16
Received: 2024/05/23 | Accepted: 2024/09/22 | Published: 2024/11/16
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