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Authors Aljasmi, M; El-Keblawy, A; Mosa, KA
Author Full Name Aljasmi, Mariam; El-Keblawy, Ali; Mosa, Kareem A.
Title Abiotic factors controlling germination of the multipurpose invasive Prosopis pallida: towards afforestation of salt-affected lands in the subtropical arid Arabian desert
Source TROPICAL ECOLOGY
Language English
Document Type Article
Author Keywords Afforestation; Arid deserts; Drought tolerance; Germination recovery; Germination rate; Osmotic potential; Salinity tolerance; Salt-affected lands
Keywords Plus JULIFLORA SW. DC; SEED-GERMINATION; HALOPEPLIS-PERFOLIATA; SALINITY TOLERANCE; CLIMATE-CHANGE; TEMPERATURE; LIGHT; WATER; STRESS; GROWTH
Abstract Prosopis pallida is an exotic invasive tree recently recorded in the hot arid subtropical deserts of the UAE and has the potential for afforestation of degraded arid lands. Little information is available about the effects of abiotic stresses on the germination of this species. Here, we aimed to assess the response of drought (as simulated by polyethylene glycol, PEG) and salinity (NaCl) stresses to light and temperature of seed incubation. Seeds treated with four salinities (0-600 mM NaCl) and seven PEG (0 to - 1.8 MPa) levels were incubated at three temperatures and two light regimes. The results showed that the response of seed germination to NaCl depended on temperature, but on both light and temperatures in PEG. In both NaCl and PEG solutions, germination did not differ significantly between the three temperatures at higher osmotic potentials. Still, it was reduced significantly in the lower potentials when seeds incubated at higher temperatures. Additionally, germination in light and dark did not differ at higher osmotic potentials of PEG, but germination in the dark was significantly higher at lower osmotic potentials. A considerable proportion of seeds that failed to germinate in PEG recovered their germination when transferred to distilled water (62%), but few seeds were able to recover from NaCl (4.2%). The higher tolerance to NaCl indicates that seeds might use sodium and chloride ions as osmoregulators to alleviate the osmotic inhibitory effects. Future research should monitor seedling establishment and growth to explain plant persistence in salt-affected lands in arid environments.
Author Address [Aljasmi, Mariam; El-Keblawy, Ali; Mosa, Kareem A.] Univ Sharjah, Dept Appl Biol, Coll Sci, POB 27272, Sharjah, U Arab Emirates; [Aljasmi, Mariam] Sharjah Res Acad, Plant Biotechnol Lab, POB 60999, Sharjah, U Arab Emirates; [Mosa, Kareem A.] Al Azhar Univ, Dept Biotechnol, Fac Agr, Cairo, Egypt
Reprint Address El-Keblawy, A (corresponding author), Univ Sharjah, Dept Appl Biol, Coll Sci, POB 27272, Sharjah, U Arab Emirates.
E-mail Address akeblawy@sharjah.ac.ae
ORCID Number El-Keblawy, Ali/0000-0003-4448-6236
Funding Agency and Grant Number University of Sharjah and Sharjah Research Academy
Funding Text This research was partially supported through a grant from both University of Sharjah and Sharjah Research Academy. The authors would like to thank Dr Attiat Elnaggar and Mr. Francois Mitterand tsombou for their help in data collection.
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher SCIENTIFIC PUBLISHERS
Publisher City JODHPUR
Publisher Address 5A, NEW PALI RD, JODHPUR, RAJASTHAN 342 001, INDIA
ISSN 0564-3295
29-Character Source Abbreviation TROP ECOL
ISO Source Abbreviation Trop. Ecol.
Publication Date MAR
Year Published 2021
Volume 62
Issue 1
Beginning Page 116
Ending Page 125
Digital Object Identifier (DOI) 10.1007/s42965-020-00124-3
Page Count 10
Web of Science Category Ecology
Subject Category Environmental Sciences & Ecology
Document Delivery Number QF9QG
Unique Article Identifier WOS:000607037400001
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