Education
Academic Background-
Ph.D. Manchester University, United Kingdom Plant Physiology | Completed: 1988
-
M.Sc. Assiut University, Egypt Plant Physiology | Completed: 1980
Editorial Services
Editorial & Publishing Roles
Editorial Board Member
Serving as Editorial Board Member for Asian Journal of Plant Sciences.
Publications (48)
Selected Scholarly Contributions
2026
2025
Climatology and phytogeography of Saudi Arabia. A review.
Osama H. Sayed
2023
Environmental impact of desert dam reservoir in arid habitat.
Osama H. Sayed
2020
2019
Invasive Opuntia stricta: Case study in Southwestern Saudi Arabia.
Osama H. Sayed
2017
Enumeration of the Flora of Wadi Lajab Saudi Arabia.
Osama H. Sayed
2017
Comparative ecophysiology and photoprotection in two stem succulent Euphorbia species in arid habitat.
Osama H. Sayed
2016
Impact of alien invasive species on habitats and species richness in Saudi Arabia.
Osama H. Sayed
2016
Photosynthetic adaptation and survival strategy of Duvalia velutina in an extremely arid environment.
Osama H. Sayed
2015
Modeling the effect of salinity on soil organic matter.
Osama H. Sayed
2015
Physiotypic plasticity and survival of arido-active Euphorbia triaculeata (Euphorbiaceae) in its natural habitat.
Osama H. Sayed
2014
Photosynthetic adaptation of Euphorbia fractiflexa (Euphorbiaceae) and survival in arid regions of the Arabian Peninsula.
Osama H. Sayed
2014
Structural and functional adaptations of the stem succulent Cralluma acutangula to its natural habitat.
Osama H. Sayed
2012
Crassulacean acid metabolism permutation and survival of Caralluma species (Apocynaceae) in arid habitats.
Osama H. Sayed
2012
Nurse association of the stem succulent Caralluma acutangula in its natural habitat.
Osama H. Sayed
2012
Geographical distribution and chorology of grasses in the Arabian Peninsula.
Osama H. Sayed
2012
Ecophysiological mechanisms of succulent survival in natural conditions: Photosynthetic carbon fixation in Caralluma acutangula (Decne. Ne.Br.) (Asclepiadaceae).
Osama H. Sayed
2011
Differential altitudinal distribution and diversity of plants with different photosynthetic pathways in arid Southern Saudi Arabia.
Osama H. Sayed
2011
Wolffiella hyalina (Delile) Monod (Lemnaceae)-a new record for the flora of Saudi Arabia.
Osama H. Sayed
2011
Chlorophyll fluorescence as a tool in cereal crop research.
Osama H. Sayed
2003
Crassulacean acid metabolism 1975-2000, a check list.
Osama H. Sayed
2001
Altitudinal changes in photosynthetic pathways of floristic elements in Southern Sinai, Egypt.
Osama H. Sayed
2000
Growth, photosynthesis and circadian patterns in Chlorella vulgaris (Chlorococcales, Chlorophyta) in response to growth temperature.
Osama H. Sayed
2000
Phenomorphology and ecophysiology of desert succulents in eastern Arabia.
Osama H. Sayed
1998
Analysis of photosynthetic responses and adaptation to nitrogen starvation in Chlorella using in vivo chlorophyll fluorescence.
Osama H. Sayed
1998
Appraisal into phytochemistry and taxonomy of an old plant collection from the Middle East.
Osama H. Sayed
1997
Control of photosynthetic electron transport in isolated wheat thylakoids.
Osama H. Sayed
1996
Adaptational responses of Zygophyllum qatarense Hadidi to stress conditions in a desert environment.
Osama H. Sayed
1996
Effect of the expected sea level rise on Avicennia marina L. A case study in Qatar.
Osama H. Sayed
1995
Condition and trend of a depression-type habitat in rainfed desert rangelands of Qatar in response to fertilizer application.
Osama H. Sayed
1994
Edaphic gradients and species attributes influencing the distribution of flora in littoral salt marshes of Qatar.
Osama H. Sayed
1994
Characterization of the heat‐induced stimulation of Photosystem‐I‐mediated electron transport.
Osama H. Sayed
1994
Nature of the Aflatoxin B1-induced inhibition of photosynthesis in Chlorella fusca (Chlorococcales, Chlorophyta).
Osama H. Sayed
1994
Growth-specific phytomass allocation in Mesembryanthemum nodiflorum as influenced by CAM induction in the field.
Osama H. Sayed
1994
Ecophysiological characteristics, distribution and nutritional value of desert range plants in Qatar.
Osama H. Sayed
1993
Photosynthetic acclimation to high temperatures in wheat.
Osama H. Sayed
1992
Inhibition of secondary carotenoid biosynthesis during degreening of Chlorella fusca (Chlorococcales, Chlorophyta) and implications for growth and survival.
Osama H. Sayed
1992
Influence of aflatoxin B1 on growth, photosynthetic oxygen evolution and regreening of Chlorella fusca (Chorococcales, Chlorophyta).
Osama H. Sayed
1992
Proline accumulation and osmoregulation in Aspergillus melleus.
Osama H. Sayed
1991
Life table analysis and ecophysiology of Mesembryanthemum nodiflorum in its natural environment.
Osama H. Sayed
1991
Conformational changes in isolated wheat thylakoids aging in vitro as reflected by changes in photosynthetic electron transport.
Osama H. Sayed
1991
Phenylpyridazinone herbicides as inhibitor of photosynthetic electron transport in isolated wheat chloroplasts.
Osama H. Sayed
1991
Action of the phenyl-pyridazinone herbicides BASF 33650 and BASF 44521 on the green and orange cells of Chlorella fusca.
Osama H. Sayed
1990
Photosynthetic responses of different varieties of wheat to high temperature. I. Effect of growth temperature on development and photosynthetic performance.
Osama H. Sayed
1989
Photosynthetic responses of different varieties of wheat to high temperature II. Effect of heat stress on photosynthetic electron transport.
Osama H. Sayed
1989
High temperature induced changes in chloroplast ultrastructure, leaf fluorescence,and photosynthesis photosynthesis in wheat varieties.
Osama H. Sayed
1986
Side effects of benomyl (Fungicide) treatments on sunflower, cotton and cowpea plants.
Osama H. Sayed
1983