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

Hasnain Alam, Jabar Z.K. Khattak, Taoufik S. Ksiksi, Muhammad H. Saleem, Shah Fahad, Hamza Sohail, Qasim Ali, Muhammad Zamin, Mohamed A. El-Esawi, Shah Saud, Xue Jiang, Mona S. Alwahibi, Jawaher Alkahtani

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

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. However, due to the active plant defense system, the plant enhanced its performance under abiotic stress conditions, but due to the severe drought condition (40% water field capacity), a significant (P < 0.05) decrease in the activities of antioxidant compounds was caused. Furthermore, osmolytes also increased under both salinity and drought stress conditions in this study. Our results also showed that increased salinity and drought stress in the soil caused a significant increase in sodium (Na+) and chloride (Cl) ions in roots and shoots of T. mandavillei. In contrast to that, the contents of Calcium (Ca2+) and potassium (K+) were decreased in all organs of the plants with increasing levels of salinity and drought stress. Taken together, T. mandavillei can be classified as a facultative halophyte with the ability to tolerate drought stress and using salt accumulation mechanisms to tolerate salinity stress.

Original languageEnglish
Pages (from-to)1336-1351
Number of pages16
JournalPhysiologia Plantarum
Volume172
Issue number2
DOIs
Publication statusPublished - Jun 2021

ASJC Scopus subject areas

  • Physiology
  • Genetics
  • Plant Science
  • Cell Biology

Fingerprint

Dive into the research topics of 'Negative impact of long-term exposure of salinity and drought stress on native Tetraena mandavillei L.'. Together they form a unique fingerprint.

Cite this