Expression of some salt tolerance genes isolated from Egyptian gray mangrove (Avicennia marina)

Abstract

Mangroves are well-adapted halophytes that thrive in coastal saline environments. They live under difficult environmental conditions, such as high light intensity and external salt concentrations, as well as low-oxygen environments, such as water-logged muck, that are typically inappropriate for the survival of other plants. Salinity is a major abiotic factor that affects plant growth, productivity, and dispersal in tropical and semitropical intertidal areas. Furthermore, it affects approximately 20% of all cultivable land and 50% of all irrigated land on the planet. Mangroves have developed a sophisticated salt filtration mechanism and a complicated root structure to withstand salty water exposure and tidal movement. The expression patterns of five salt tolerance genes (amFer1, amDhna, amSod1, amCat1, and amUbc2) in the Egyptian gray mangrove (Avicennia marina Forssk.) grown under different environmental conditions in South Sinai protectorates (Nabq, Ras Mohamed, Safaga, and Wadi El-Gemal), Egypt, were investigated in this study. This study aimed to assess and examine the genetic behavior of mangroves in response to salinity by using quantitative real-time PCR. Findings revealed differences in the expression patterns of the investigated genes under various conditions, showing that salinity influences plant genetic response. Ferritin gene expression was high in all locations, indicating that ferritin represents an essential component of the mangrove response mechanisms.

In Vitro Mutagenesis and Propagation of Paulownia Tomentosa (Thumb) for Salt Tolerance

“…The degradation of the environment causes biotic and abiotic stresses in plants and restricts their production and growth (Shao and Chu, 2005;El-Atawy et al, 2021). Salinity and drought are the main abiotic stresses that affect crops worldwide (Vinocur and Altman, 2005) and cause serious harm to plants, including growth inhibition, necrosis, impaired metabolism, development, and quality reduction (Sivritepe and Eris, 1999;Lang et al, 2019Lang et al, , 2020.…”

Comparative Study on Fruit Yield and Quality Traits of the New Mango Cultivars Grown Under Egypt Conditions

“…Meantime, customers seek the highest fruit quality with an emphasis on color and flavor, while traders and distributors require mango types with greater resistance to handling and transit (Sousa et al, 2012). In mango cultivars, the pulp content and other fruit quality traits depend on environmental influences and vary with the climatic conditions (Padhiar et al, 2011;El-Atawy et al, 2021, Juliantari et al, 2021. Prior research underlined the advantages of evaluation studies for choosing the finest mango cultivars for the different localities to achieve the highest fruit yield (Naz et al, 2014).…”