Effect of Phosphorus on Root Signaling of Wheat under Different Water Regimes

Abstract

Phosphorus (P) is one of the most vital nutrient needed for crop production. Phosphorus plays an important role in root growth and builds resistance against abiotic stresses. In the current study two wheat cultivars (phosphorus responsive) were planted to study the treatment effects in polythene bags. The treatments were 5 different levels of P (P 0 = 0.2 g/bag, P 60 = 0.4 g/bag, P 80 = 0.53 g/bag, P 100 = 0.66 g/bag and P 120 = 0.8 g/bag) and three water regimes. The data regarding root length, shoot length, root-shoot ratio and yield parameters were collected and analyzed. Among both the genotypes, NARC-2009 performed well compared to Sehar-06. The highest dry matter and yield were obtained under P 100 compared to other treatments. With the increased phosphorus root and shoot length increased linearly up-to P 100 while afterward it starts decreasing. The results lead to conclusion that optimum dose of phosphorus could be used to increase root growth and establishment under water stress.

Coupling effects of phosphorus fertilization source and rate on growth and ion accumulation of common bean under salinity stress

“…Phosphorus (P) is mentioned among the most essential plant growth nutrients, since it is a crucial element of biological compounds, such as nucleic acids, nucleotides, phospholipids, and phospho-proteins. Phosphate compounds function inside plants as the "carbon currency" (Ahmed et al, 2018). Additional P application mitigates the reduction of plant growth caused by salinity (Wagdi et al, 2013).…”

Improved Phosphorus (P) Uptake and Yield of Rainfed Wheat Fed with P Fertilizer by Drought-Tolerant Phosphate-Solubilizing Fluorescent Pseudomonads Strains: a Field Study in Drylands

“…Water-deficit stress reduces plant growth rate through secondary stresses (osmotic and oxidative) and by disrupting cell metabolism and affecting many physiological and biochemical processes (Etesami and Maheshwari 2018;Anjum et al 2017). The occurrence of this stress at the stages of grain filling of wheat has the greatest reduction effect on wheat crop yield (Ahmed et al 2018), and this is the major issue for wheat production in arid and semi-arid areas of the world (Farshadfar et al 2011). In addition, in most soils of arid and semi-arid regions of the world, the availability of P to plants is limited due to high alkalinity (high pH), high calcium carbonate content, and water scarcity (Etesami 2020b;Khan et al 2020).…”

“…In addition, in most soils of arid and semi-arid regions of the world, the availability of P to plants is limited due to high alkalinity (high pH), high calcium carbonate content, and water scarcity (Etesami 2020b;Khan et al 2020). Phosphorus (P) is one of the essential elements for plant growth and is involved in many physiological plant processes like energy transfer, transformation of sugar to starch, photosynthesis, and seed formation (Ahmed et al 2018). Moreover, it is known that feeding wheat plant with P fertilizer increases the tolerance of wheat plant to drought stress and improves the growth indices of the plant qualitatively and quantitatively (Ahmed et al 2018;Karimzadeh et al 2020;Rodriguez et al 1996).…”

Seed priming for alleviation of heavy metal toxicity in plants: An overview

“…Among various stress factors, heavy metal toxicity is considered a potential environmental enemy in natural and agriculture ecosystems. The increase in industrialization has escalated heavy metal pollution resulting in environmental, agricultural and human health problems (2,3). Though HMs are naturally present in the soil; anthropogenic and geologic activities further increase their concentration, thus they cause harmful effects on organisms (3,4).…”

“…Nonessential metals such as cadmium (Cd), mercury (Hg) and lead (Pb) do not have important biological role. Instead, these metals when accumulate in higher concentrations disturb the physiological, structural and biological functions (2,6). The general detrimental effects of HMs are chlorosis, distorted nutrient assimilation, reduction in growth and photosynthesis; lower biomass accumulation and senescence, which eventually can cause the death of the plants (7)(8)(9).…”