Negative impact of long‐term exposure of salinity and drought stress on native Tetraena mandavillei L.

Abstract

Tetraena mandavillei L. is a perennial shrub native to the Middle Eastern countries of Asia, which is extensively regarded as a drought-tolerant plant. However, the plant reduces growth and biomass when grown in high concentrations of sodium chloride in the soil. We conducted a pot experiment to influence the negative impact of different levels of salinity (0, 10, and 20 dSm −1 ) and drought stress (100, 80, 60, and 40% water field capacity), to study different growth-related parameters, physiological alterations and ion uptake by T. mandavillei. Both salinity and drought stress caused a negative impact by affecting several attributes of T. mandavillei, but the plants showed some resistance against drought stress conditions in terms of growth and biomass. In addition to that, we noticed that a combinatorial and individual impact of drought and salinity stress decreased photosynthetic pigments and gas exchange parameters in T. mandavillei. Results also depicted that the combination of the abiotic stress conditions drought and salinity induced reactive oxygen species (ROS), indicating that the plants undergo oxidative damaged.

Anatomical adaptations and ionic homeostasis in aquatic halophyte Cyperus laevigatus L. Under high salinities

“…It receives good annual rainfall but due to dry barren hills and salinity enough water is not available to plants. A moderate accumulation of K + ions in this population may be for K + /Na + selectivity for preventing excessive Na + ion uptake ( Alam et al, 2020 ). No noticeable alteration observed in anatomical features of this population but narrow xylem vessels are highly advantageous because wide vessels can be susceptible to collapse under physiological drought ( Goharrizi et al, 2020 , Rana et al, 2020b ).…”

“…In other regions of the world common salt indicator species are Sporobolus virginicus, Juncus acutus, Salsola vermiculata, Salicornia europaea and Suaeda australis ( Aslamsup et al, 2011 ). Saline soil imparts several harmful effects on plants growth and development because of reduced water uptake and excessive ions absorbance, which ultimately leads to side effects on cellular level ( Alam et al, 2020 ). Salinity can cause disturbance in nutritional requirement of plants ( Saleem et al, 2019 , Ahanger et al, 2020 , Ali et al, 2020a , Kaya et al, 2020 ).…”

Quantitative Determination of the Effects of He–Ne Laser Irradiation on Seed Thermodynamics, Germination Attributes and Metabolites of Safflower (Carthamus tinctorius L.) in Relation with the Activities of Germination Enzymes

“…In general, it is found that seed irradiation with visible and infra-red light of various wavelength results in modulations in seed germination process [53]. In earlier studies, it was found that the germination of photosensitive buried seeds under field condition can be saturated with a milli second exposure with sunlight and a few seconds exposure with moonlight [10,47].…”

Effect of Foliar Application of Various Nitrogen Forms on Starch Accumulation and Grain Filling of Wheat (Triticum aestivum L.) Under Drought Stress

“…Drought is a severe source of abiotic stress that threatens wheat (Triticum aestivum L.) growth and yield worldwide and is exacerbated by climate change (Wang et al, 2016;Zhang et al, 2017;Alam et al, 2020). Northern China, a major global wheatproducing region, is frequently afflicted with drought during wheat growth, particularly when precipitation is relatively low and evapotranspiration is high in the spring (Deng et al, 2018;Jiang et al, 2020;Li et al, 2020).…”

“…N and water interact in significant ways that affect wheat growth. Water deficit impedes plant N uptake, causing a nitrogen deficiency which aggravates the damage caused by drought stress (Gonzalez-Dugo et al, 2010;Alam et al, 2020;Nazar et al, 2020). Efficacious N fertilizer management attenuates the effects of drought on wheat by maintaining normal crop physiology and scavenging reactive oxygen species (ROS) formed in response to drought stress (Agami et al, 2018;Guo et al, 2019).…”