Physiological Role of Arbuscular Mycorrhizae and Vitamin B1 on Productivity and Physio-Biochemical Traits of White Lupine (Lupinus termis L.) Under Salt Stress

Abstract

Arbuscular mycorrhizal fungi (AMF) have a key role in natural and agricultural ecosystems affecting plant nutrition, soil biological activity and modifying the availability of nutrients. Thiamine (Vitamin B1) is an essential coenzyme which incorporated in a wide range of plant metabolic processes. Thus, this research aimed to study the possibility of mitigating the negative effect of salinity stress on white lupine plant via using AMF and Vit B1 through assessment growth, various physiological traits and yield components of the white lupine plant. AMF was added to the soil (0.0 and 7 g pot−1) and Vit B1was foliar applied to white lupine seedlings (0.0, 100 and 200 mgL−1) and watered by two levels of salinity (0.0 or 5000 mgL−1). Salinity stress (5000 mgL−1) resulted in significant reductions in growth photosynthetic pigments constituents, endogenous indole acetic acid (IAA), some elements & productivity of white lupine in comparison to control plants. While, increasing phenols, some osmolytes and sodium compared to control (plants irrigated by tap water). Adding AMF to soil with the recommended dose boosted white lupine growth, certain physiological aspects and productivity in white lupine plants under irrigation with saltwater (5000 mgL−1). Furthermore, exogenous Vit B1 treatment with 100 & 200 mgL−1 not only enhanced growth and seeds productivity of white lupine plants under normal irrigation but also, improved salinity tolerance by increasing white lupine growth and productivity via inmproving photosynthetic pigments, osmolytes levels and element contents compared to their corresponding controls. Finally it could be concluded that, 200 mgL−1Vit B1 wit AMF treatment shows superiority in inducing maximum improving white lupine plant salinity tolerance.

Effect of Abiotic Signals on the Accumulation of Saponarin in Barley Leaves in Hydroponics Under Artificial Lights

“…Na + and K + salts were known as ROS regulation factors in plants, ,,− and these might affect the saponarin biosynthesis in YBL. Thus, Na + as a ROS stimulator was used in the hydroponics, and the YBL growth and saponarin contents were measured under 6500 K light conditions.…”

Humic acid and grafting as sustainable agronomic practices for increased growth and secondary metabolism in cucumber subjected to salt stress

“…Indeed, under salinity stress, the high amount of Na + and Cl − accumulation can disrupt Ca 2+ and K + absorption, while the accumulation of Na + in plant tissues can disrupt or even destroy cellular homeostasis. To cope with salinity stress, plants tend to reduce the amount of Na + in their xylem, and as a result, the accumulation of Na + in their tissues is reduced 5 .…”

“…However, any disturbance in the balance between ROS and the antioxidant defense system can create conditions of oxidative stress. Reactive oxygen species can significantly damage membrane lipids, proteins, nucleic acids, and photosynthetic pigments 5 . Considerable efforts have been made to increase salt stress tolerance in plants, including the application of exogenous substances, such as compatible solutes 7 , trehalose 8 , brassinolide 9 , 10 , melatonin 11 , humic acid 12 and selenium 13 .…”

Foliar Spraying of NaHS Alleviates Cucumber Salt Stress by Maintaining N+/K+ Balance and Activating Salt Tolerance Signaling Pathways

“…Moreover, the accumulation of Na + will cause mineral ion imbalance, nutrient deficiency symptoms, and metabolic disorders in plants, thus limiting plant growth and yield [9]. Furthermore, salt stress hinders growth by inhibiting different physiological and biochemical activities of plants, inhibiting photosynthesis, reducing nutrient absorption, and inhibiting cell division and expansion [10,11].…”