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通过该基因培育耐盐胁迫的转基因小麦植株。

Development of transgenic wheat plants withstand salt stress via the gene.

作者信息

Abdelsattar Mohamed, Ramadan Ahmed M, Eltayeb Amin E, Saleh Osama M, Abdel-Tawab Fatthy M, Fahmy Eman M, Hassanein Sameh E, Ali Hani M, Al-Saud Najla B S, Alameldin Hussien F, Hassan Sabah M, Mohamed Nermin G, Abdel Azeiz Ahmed Z, Bahieldin Ahmed, Eissa Hala F

机构信息

Agricultural Genetic Engineering Research Institute (AGERI), Agricultural Research Center (ARC), Giza, Egypt.

Department of Biological Sciences, Faculty of Science, King Abdulaziz University (KAU), Jeddah, Saudi Arabia.

出版信息

GM Crops Food. 2025 Dec;16(1):173-187. doi: 10.1080/21645698.2025.2463139. Epub 2025 Feb 10.

Abstract

In light of the fact that climate change has emerged as one of the difficulties confronting the global food system, researchers are obligated to work toward developing fundamental crops, particularly wheat, to combat environmental stress, including drought and salt. In the present study, genetic engineering was used to transfer the Arabidopsis gene, which controls the buildup of ascorbic acid (AsA) to make bread wheat less likely to be sensitive to salt stress. The biolistic bombardment was used to transfer cDNA from the plant that encodes into Bobwhite 56 cultivar wheat plants. A molecular investigation was performed on six different transgenic lines to confirm the integration of the transgene, the copy number, and the expression of the transgene. There were one to three copies of the transgene, and there was no association found between the number of copies of the transgene and All the data generated or analyzed during this study are included in this published article [and its supplementary information files].the presence of its expression. Compared to plants that were not transgenic, the amount of ascorbic acid (AsA) that accumulated in the transgenic plants was twice as high. ROS concentrations are significantly lower in transgenic plants compared to non-transgenic plants under both control and salt stress conditions, effectively reducing oxidative stress. By cultivating transgenic T2 plants in a greenhouse, we were able to determine whether they were able to tolerate the potentially damaging effects of salt stress (200 mm). The study concluded that transgenic wheat plants that consistently expressed the gene become tolerant to salt stress with improvement in growth characteristics.

摘要

鉴于气候变化已成为全球粮食系统面临的难题之一,研究人员有义务致力于培育基础作物,尤其是小麦,以应对包括干旱和盐碱在内的环境压力。在本研究中,利用基因工程技术转移拟南芥基因,该基因控制抗坏血酸(AsA)的积累,以使面包小麦对盐胁迫的敏感性降低。采用生物弹轰击法将编码该基因的植物cDNA转移到博白56品种小麦植株中。对六个不同的转基因株系进行了分子研究,以确认转基因的整合、拷贝数以及转基因的表达情况。转基因有1至3个拷贝,且未发现转基因拷贝数与其表达之间存在关联。与非转基因植物相比,转基因植物中积累的抗坏血酸(AsA)量高出两倍。在对照和盐胁迫条件下,转基因植物中的活性氧(ROS)浓度均显著低于非转基因植物,有效降低了氧化胁迫。通过在温室中种植转基因T2植株,我们能够确定它们是否能够耐受盐胁迫(200 mM)的潜在破坏作用。研究得出结论,持续表达该基因的转基因小麦植株对盐胁迫具有耐受性,且生长特性得到改善。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/63cb/11812330/39b130b05074/KGMC_A_2463139_F0001_OC.jpg

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