1
|
Alam H, Zamin M, Adnan M, Ahmad N, Nawaz T, Saud S, Basir A, Liu K, Harrison MT, Hassan S, Alharby HF, Alzahrani YM, Alghamdi SA, Majrashi A, Alharbi BM, Alabdallah NM, Fahad S. Evaluating the resistance mechanism of Atriplex leucoclada (Orache) to salt and water stress; A potential crop for biosaline agriculture. Front Plant Sci 2022; 13:948736. [PMID: 35979075 PMCID: PMC9377539 DOI: 10.3389/fpls.2022.948736] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
The development of food and forage crops that flourish under saline conditions may be a prospective avenue for mitigating the impacts of climate change, both allowing biomass production under conditions of water-deficit and potentially expanding land-use to hitherto non-arable zones. Here, we examine responses of the native halophytic shrub Atriplex leucoclada to salt and drought stress using a factorial design, with four levels of salinity and four drought intensities under the arid conditions. A. leucoclada plants exhibited morphological and physiological adaptation to salt and water stress which had little effect on survival or growth. Under low salinity stress, water stress decreased the root length of A. leucoclada; in contrast, under highly saline conditions root length increased. Plant tissue total nitrogen, phosphorus and potassium content decreased with increasing water stress under low salinity. As salt stress increased, detrimental effects of water deficit diminished. We found that both salt and water stress had increased Na+ and Cl- uptake, with both stresses having an additive and beneficial role in increasing ABA and proline content. We conclude that A. leucoclada accumulates high salt concentrations in its cellular vacuoles as a salinity resistance mechanism; this salt accumulation then becomes conducive to mitigation of water stress. Application of these mechanisms to other crops may improve tolerance and producitivity under salt and water stress, potentially improving food security.
Collapse
Affiliation(s)
- Hasnain Alam
- Department of Biological Sciences, International Islamic University, Islamabad, Pakistan
- Department of Biology, College of Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Muhammad Zamin
- Department of Agriculture, University of Swabi, Swabi, Pakistan
| | - Muhammad Adnan
- Department of Agriculture, University of Swabi, Swabi, Pakistan
| | - Nisar Ahmad
- Department of Biotechnology, University of Science and Technology, Bannu, Pakistan
| | - Taufiq Nawaz
- Department of Food Science and Technology, The University of Agriculture, Peshawar, Pakistan
| | - Shah Saud
- College of Life Science, Linyi University, Linyi, China
| | - Abdul Basir
- Department of Agriculture, University of Swabi, Swabi, Pakistan
| | - Ke Liu
- Tasmanian Institute of Agriculture, University of Tasmania, Burnie, TAS, Australia
| | - Matthew Tom Harrison
- Tasmanian Institute of Agriculture, University of Tasmania, Burnie, TAS, Australia
| | - Shah Hassan
- Department of Agricultural Extension Education & Communication, The University of Agriculture, Peshawar, Pakistan
| | - Hesham F. Alharby
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Yahya M. Alzahrani
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sameera A. Alghamdi
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ali Majrashi
- Department of Biology, College of Science, Taif University, Taif, Saudi Arabia
| | - Basmah M. Alharbi
- Department of Biology,, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - Nadiyah M. Alabdallah
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Shah Fahad
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, College of Tropical Crops, Hainan University, Haikou, China
- Department of Agronomy, The University of Haripur, Haripur, Pakistan
| |
Collapse
|