RT Dissertation/Thesis
T1 Regulations of drought and salt tolerance in Salsola L., species in the arid deserts of United Arab Emirates
T2 Regulación de la tolerancia a la salinidad y a la sequía en especies del Salsola L., en los desiertos áridos de los Emiratos Árabes Unidos
A1 Elnaggar, Attiat
K1 Salsola drummondii Ulbr. - Tolerancia a la sequía
K1 Flora de desiertos
K1 Suelos - Salinidad
K1 Emiratos Árabes Unidos
AB Drought and salt stresses are among the important factors limiting plant growth and distribution inthe United Arab Emirates (UAE) deserts. The current study assessed the impacts of habitat origin(saline and non-saline habitats), temperature, and light on drought and salinity tolerances duringgermination of Salsola drummondii Ulbr., a habitat-indifferent halophyte. Drought tolerance wasalso assessed for S. imbricata Forssk. Seeds treated with different concentrations of sodiumchloride (NaCl) (0 to 1000 mM NaCl) for salinity analysis, and polyethylene glycol (0 to -1.5 MPafor S. drummondii and 0 to -2.4 MPa for S. imbricata) for drought analysis, were incubated at threetemperatures and two light different regimes. Seeds of S. drummondii from the two habitatsdiffered in dormancy, germination speed, and responses to light and temperature, which could beconsidered as environmental cues to determine the proper space and time of germination. The twoSalsola L., species germinated better at the lower than at higher thermoperiods. Seeds of S.imbricata tolerated higher drought stress than S. drummondii.
PB UMA Editorial
YR 2020
FD 2020-09-07
LK https://hdl.handle.net/10630/19744
UL https://hdl.handle.net/10630/19744
LA eng
NO The study assessed responses of some morphological, physiological and biochemicalattributes to salinity effects of S. drummondii adult plants from saline and non-saline habitats, inaddition to young potted plants treated with different NaCl levels in the laboratory. There wasinsignificant difference in many of the studied attributes between plants grown in saline and thosegrown in non-saline habitats; e.g. leaf fresh and dry weights, leaf succulence, concentrations ofsome essential elements and some antioxidants. S. drummondii seedlings grew very well in up to500 mM NaCl under the lab conditions, and associated with antioxidants increase with increasingNaCl up to 800 mM NaCl. Transcriptome analysis for salt tolerance in S. drummondii identified 17361 differentially expressed genes; 1283 (7.3%) of them can be assembled into nine functionalcategories which may hold specific biological functions in salt tolerance mechanisms. Fecha de lectura de Tesis Doctoral:  6 mayo 2020
NO Tesis realizada en el Departamento de Botánica y Fisiología Vegetal de la Universidad de Málaga,en el ámbito de las actividades del Grupo de Investigación RNM 115 “BIODIVERSIDAD,CONSERVACION Y RECURSOS VEGETALES” -del Plan Andaluz de Investigación,Desarrollo e Innovación de la Junta de Andalucía-.El presente trabajo ha estado financiado por los siguientes proyectos entre laUniversidad de Malaga, UMA y la Universidad de Sharjah, UoS: Transcriptomics andMetabolics analysis to Reveal Salt and Heat Stress Related Genes, Phytohormones andOsmolytes in Facultative Halophytes plant of the UAE (2017-2019). UMA 1602145041-P.Otra parte de la investigacion ha sido realizada en el Departamento de Biologia Aplicada dela Universidad de Sharjah. Sharjah, Emiratos Arabes Unidos (UAE).
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 22 ene 2026