Ahmadreza MehrabianShahid Beheshti University | SBU · Department of Plant Sciences and Biotechnology
Ahmadreza Mehrabian
PhD
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106
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Introduction
Ahmadreza Mehrabian currently works at the Plant sciences, Shahid Beheshti University (General Campus). Ahmadreza Mehrabian does research in Botany, Ecology and plant conservation.
Publications
Publications (106)
In this paper, we present some important findings in Onosma sect. Onosma. Data were collected during several surveys in western and northwestern Iran. Three new species were discovered and are illustrared here, namely O. sheidaii sp. nov and O. azarbaidjanensis sp. nov (in subsect. Haplotricha) and O. mozaffariani sp. nov. (In subsect. Heterotricha...
During field excursions in Western districts of Iran, an unknown species of Onosma was collected in eroded slopes in steppe formations near the border of Iran and Turkey. A detailed assessment on the basis the most important diagnostic characters as well as literature review led to introduce a new species of Onosma L.. The new species Onosma moussa...
In this paper, seven new species of Onosma are described and illustrated. Besides, a diagnostic key is provided for new species. Hence, based on a wide range of the assessments conducted, the mentioned samples are considered as distinct species when compared with the previously introduced species in the region. Thus, it strengthens our justificatio...
Onosma is a genus with numerous taxonomical challenges, a wide range of morphologically similar species described only with uncertain and indistinct morphological characteristics and interspecific hybridization, so, there are many challenges, such as problems in identifying species as well as species delimitation. Therefore, a taxonomic revision of...
Iran is the most diverse region of Southwestern Asia and is the main zone of the Iranian plateau, located at the intersection of the Irano-Turanian and Sudano-Zambezian floristic regions. The pteridophyte flora of Iran is mainly a Mediterranean, European type flora, but with a few African elements in the southwest and a small ancient Asiatic compon...
As one of the main sources of natural antioxidants, flowering plants play a role in the prevention and treatment of many diseases directly and indirectly. Honey is considered as an important nutrient in the supply of natural antioxidants, the amount of which is directly dependent on the plant origin and geographical location of the bee feeding plac...
The genus Epilobium of Family Ona-graceae is taxonomically a difficult group due to frequent inter-specific hybridization and species morphological overlaps. We could collect and identify 18 Epilobium specie from different parts of the country and planned a detailed morphological and molecular investigation with the aim to delimit these species bas...
Ethnopharmacological survEy of mEdicinal plants usEd to trEat skin disEasEs among hErbal shops in Jahrom, iran.-Among the most common illnesses affecting people's lives are skin disorders, for which a variety of therapeutic approaches has been suggested. Traditional herbal remedies can be counted among the best therapies for such diseases. Herbal s...
The negative impacts of global climate change are accelerating the decline of pollinators and nectar-producing plant populations and threatening local and global food security. Iran is ranked as the fourth largest honey producer in the world due to the high diversity of taxa of nectar plants, but little attention has been paid to the conservation a...
Ethnobotany is the study and investigation of how people of a particular
tribe, culture or region use native plants in that area. In terms of plant
biodiversity, Iran is one of the richest regions in Southwest Asia. Iran is
one of the leading countries in ethnobotanical knowledge, due to the
variety of medicinal plants in the country; natives o...
Melissopalynological and chemical analysis of honey provide us useful and valuable information about the botanical and geographical origin of honey. The data in question is very important for authentication as well as for testing the quality of honey, so this is considered the main method in honey regulation here, we have used chemical analysis and...
The genus Onosma is one of the largest genera of the family Boraginaceae, with about 240 species distributed mainly in the mountainous habitats of the Irano-Turanian region. Determining the boundaries of the species in this genus has been faced with several problems, and their relationships are still poorly understood based on the recent phylogenet...
Beheshti university, tehran, iran; b iranian research institute of Plant Protection, agricultural research, education and extension organization (areeo), tehran, iran ABSTRACT The genus Onosma is one of the largest genera of the family Boraginaceae, with about 240 species distributed mainly in the mountainous habitats of the Irano-Turanian region....
Article Info Alluvial fans are ideal places for investigating the effects of geomorphological processes and landforms on soil properties. This study aimed to investigate the effects of geomorphological forms and processes on physical and chemical properties of soil in an alluvial fan located in the southeast of Shah Ghaib salt diaper. The study are...
Wild plant species are among the most important candidates for reinforcing food safety in the world. Worldwide increases in population and food shortages have caused the rate of hunger to rise rapidly. Therefore, there is an urgent need to review indigenous knowledge on the traditional uses of wild edible plants so as to apply this knowledge in mod...
Melissopalynology is one of the most important scoped in applied palynology that identifies and evaluates pollen in honey to quality control as well honey classification. This valuable approach connects academic researchers with manufacturers, exporters, and industrial units. This study is the first pioneering study in the world that has been perfo...
The taxonomy of O. dichroantha, O. nervosa, and their allied species is extremely controversial among authors. The delimitation of these species was extremely confusing, and closely related species were separated by weak and non-diagnostic morphological traits. A taxonomic revision of these taxa is presented here based on our fieldwork and a thorou...
Conservation of biological diversity is one of the most important issues in conservation biology, so a wide range of quantitative spatial methods have been used to determine the biodiversity hotspots and the conservation priority areas. The main aims of the present study are determining the areas of endemism as well as the centers of diversity of t...
Onosma is one of the most diverse genera of Boraginaceae. The areas of endemism as well as the main diversity centers of the genus cover the Iranian as well Anatolian plateaus and the Mediterranean region. The present study was conducted to determine the distribution patterns, diversity, and endemism centers, and endangered species in the middle pa...
Predicting the effect of climate change on the distribution of valuable and endangered plant species is essential for their conservation and management. In this study, the MaxEnt model and 10 environmental variables were used to predict the current and future distribution of E. amoenum and E. italicum in response to climate change. Also, to predict...
En este estudio, se describen e ilustran cuatro nuevas especies de Onosma subsect. Asterotricha del noroeste, oeste y norte de Irán. Estas especies se han descrito tras una revisión exhaustiva de la literatura y un estudio comparativo de especímenes de diversos herbarios. Esta propuesta se basa en la divergencia significativa de los caracteres morf...
Entre las enfermedades más comunes que afectan a la vida de las personas se encuentran los trastornos de la piel, para los que se han sugerido diversos enfoques terapéuticos. Los remedios tradicionales a base de plantas pueden contarse entre las mejores terapias para estas enfermedades. Las herboristerías, o “attaris” (en persa), juegan un papel im...
Onosma atrii and O. persica are described and illustrated as new species and O. caucasica Levin is recorded for the first time from northwestern Iran. The two new species are placed in subsect. Asterotricha (Boiss.) Gürke, because of the asterotrichous indumentum (stellate trichomes) of their basal leaves. An extensive review of the literature and...
Identifying the consequences of global warming on the potential distribution of plant taxa with high species diversity or a high proportion of endemic species is one of the critical steps in conservation biology. Here, present and future spatial distribution patterns of 20 Allium endemic species were predicted in Iran. In this regard, the maximum e...
Plants are a key component of traditional medicine that has long been used by humans since ancient times. Despite the dramatic advances in the health care system and pharmaceutical industry, still traditional herbal medicine is used all over the World. According to World Health Organization [1], approximately 80% of the world’s population uses trad...
Crop Wild Relatives (CWR) have the potential to contribute to food security. These taxa can donate advantageous traits to counter biotic as well as abiotic stress and improve the quality of crops. This study aims to provide as many details as possible on distribution patterns and centers of diversity in order to identify and establish modern protec...
Tracing the botanical origin and authenticating honey are key steps in the supply and trade of this valuable natural product. Melissopalynology, phytochemistry, microbiology, organoleptic, physicochemical and chemical pollution analyses, together complete the puzzle of honey quality control. These methods are complementary and together provide the...
Crops wild relatives cover a wide range of food, forage, medicinal, ornamental and
industrial plants. Due to the ecosystem instability caused by climate changes, the use of
biological and ecological capabilities of crop wild relatives has great importance to
promote the adaptation of crops. So far, there are no regular sources on the list, their...
During the past decades, several plant species have been introduced to Iran wich there is no compiled data about them. Due to the lack of an ecological-geographical database on introduced plant species to Iran, a study to compile and analyze their information for management planning seems necessary. In this study, a databace related to mentioned pl...
The demand for food resources is increasing quickly because of growth in human populations; therefore, food security may become one of the largest human challenges of this century. Crop wild relatives (CWRs) are the most valuable plant genetic resources (PGR) for the conservation of genetic diversity in crops. However, climate change is an added pr...
Iran has an area of 1,623,779 km2 and, in terms of size, is believed to be the second and fourteenth country in South-west Asia and in the world, respectively (Mostafavi et al. 2015; Coad 2018). The largest proportion of Iran is located in an average altitude of about 1000 m. The main highlands consist of four distinct mountainous regions: Alborz i...
Assessing distribution patterns of valuable taxa plays an important role in the biodiversity conservation of these taxa. The genus Crocus L. (Iridaceae) comprises about 100 species that are distributed mainly in the Mediterranean region and western Asia. The present study purposed to assess the distribution patterns of Iranian Crocus species (inclu...
چکیده
در طی سالهای گذشته، گونهها ی متعددی به كشور ایران معرفی شده است كه اطالعات مدونی پ ی رامون آنها وجود
ندارد. به واسطه فقدان بانک اطالعات اكولوژی-جغرافیایی پ یرامون گونههای بیگانه و معرفیشده به ایران انجام یک مطالعه جهت
تدوین و تحلیل اطالعات آنها جهت برنامهریزیهای مدیریتی ضروری به نظر میرسد. در این مطالعه پایگاه اطالعاتی مربوط به
تاكسونهای گ...
A climatic heterogeneity and geomorphologic complexities that have been shaped during a sophisticated paleo-biogeographical history has led Iran to become a prominent zone of endemism, an endemic center of the Irano-Turanian region, and a global center of diversity for vascular plant taxa in the world. According to the present study, Iranian macrop...
Geomorphological processes operating in depositional landforms, such as alluvial fans, play an important role in vegetation characteristics. Proper understanding of the processes, such as erosion, deposition, sediment entrainment, flooding, channel migration, and avulsion, would be helpful in management and conservation of vegetation on the alluvia...
Distribution patterns and Conservation Status of Iranian Endemic Trees and Shrubs with the exception of Astragalus.
Distribution patterns and priorities for conservation of Iran Trees and Shrubs with the exception of Astragalus
The Map of Distribution patterns and geobotany of Iranian Endemic Monocotyledons.
The Solanaceae family with 49 species of 10 genera is one of the important nutritional, economical, medicinal and ornamental families in which six genera of them are classified in the group of wild relatives. Predicting the effect of climate change on the distribution of plant species is important for their management and conservation. In this stud...
Climate change may cause shifts in the natural range of species especially for those that are geographically restricted and/or endemic species. In this study, the spatial distribution of five endemic and threatened species belonging to the genus Onosma (including O. asperrima, O. bisotunensis, O. kotschyi, O. platyphylla, and O. straussii) was inve...
The present study focuses on the distribution patterns of Iranian endemic monocots and concentrates on important zones for these taxa in a phyto–geographical context. Iranian endemic monocots included 152 species belonging to 35 genera of 10 plant families, and comprised about 2.08% of Iranian plant flora as well as about 6.9% of endemic flora of I...
Crop wild relatives (CWR) are the most important genetic resources to improve and ensure global food security. Following Vavilov studies on CWRs, Iran is categorized in the higher ranks of conservation priorities. However, the species in this area are severely exposed to threats which make it necessary to protect them. Accordingly, the initial step...
The evaluation as well as data banking of distribution patterns are considered as the most important management action
for the conservation of biodiversity. Iran is considered as one of the most important of diversity centers of Onosma L.
and includes a high rate of endemism. Due to the lack of adequate data on conservation and distribution pattern...
The climate change is the greatest environmental challenge facing the world today. The prediction of the effect of climate change on the distribution of sensitive and valuable plant species is considered important in the management and conservation of them. Onosma L. as a very rich taxa from Lithospermeae Dumort. tribe in Boraginaceae family includ...
Geobotanical studies of taxa with a high proportion of richness and endemism plays a prominent role in conservation strategies. Iran is one of the main diversity centers of the genus OnosmaL. in context the richness as well endemism that represents the necessity of its conservation assessments. In this study, the distribution patterns of the mentio...
Owing to narrow geographical distribution, endemic species indicates higher vulnerability than other taxa, so they have been used as surrogate elements to identify the priorities. Little attention has been paid to distribution patterns, hot spots, and conservative zones of endemic trees and shrubs in scale of Iran. The main purpose of this study wa...
The saffron as a well-known genus of tribe Crocoideae Burnett. belonging to large
family of Iridaceae including about 100 taxa in the world. Mentioned genus comprised
of 9 species belonging to 2 sections as follow Crocus and Nudiscapus in Iran. The
taxonomic value of palynology is well known in Iridaceae. Because of importance of
these evidence as...
Because of limited resources, priorities seems to be necessary in conservation of Biodiversity. It is therefore necessary to weigh the alternatives necessary to assess priorities for conservation. In conservation-based approaches, not all taxa and habitats have similar significances. Several factors following species richness, endemism, threats lev...
Geobotanical studies of taxa with a high proportion of richness and endemism plays a prominent role in conservation strategies. Iran is one of the main diversity centers of the genus OnosmaL. in context the richness as well endemism that represents the necessity of its conservation assessments. In this study, the distribution patterns of the mentio...
The use of wild vegetables (leaves, buds, stalks, flowers) is very widespread in rural areas of Iran. However, in recent years use of wild vegetables have become more popular in the urban areas. This has created a demanding market for wild food plants in urban settlements. Wild leafy vegetables encompass a variety of vitamins and valuable nutrients...
Plants constitute the main portion of human diet worldwide. It is estimated that from 30,000 edible plant species, only 150 species are cultivated in different regions of the world, and only 30 plant species are widely used in daily diets of individuals. Wild food plants (WFP) have substantial potential for the development of new crops through dome...
Since the phenomenon of climate change is the greatest environmental challenge to the current conditions of the biosphere, determining the desirability of potential and potential habitats is one of the important pillars of management and protection of plant species against environmental threats. Now, with the advancement of statistics science an...
The Carex L. includes 62 species of 4 subgenus belonging to 30 sections in Iran. This genus has numerous complex taxonomic groups that make it necessary to evaluate the diagnostic and differential traits. The reproductive characters especially inflorescent showing the high value to taxonomic delimitation in Cyperaceae as well Carex. This study exam...
Geobotanical assessment of taxa with a high percentage of richness and endemism plays an important role on conservation plans. South-West Asia is one of the main biodiversity centers of the genus Onosma (Boraginaceae) comprising a high rate of species richness and endemism in Iran. Due to existing threatened factors to habitats and lack of sufficie...
Tamarix (Tamaricaceae) is an ancient genus in Asia that contains about 54 to 90 species with unresolved taxonomy. Tamarix has major center of speciation in the Pakistan-Afghanistan-Iran-Turkmenistan-S-Kazakhstan-W-China area and in the eastern Mediterranean area. Tamarix species are highly plastic and tolerant to adversity being able to occupy diff...
The genus Epilobium L. (Family Onagraceae) with about 200 species is taxonomically complicated due to wide inter-specific gene flow. There is no report on biosystematics of Epilobium species in Iran, therefore we studied 5 species of this genus using a combination of morphological, molecular (ISSR) and palynological data to delimit these species. A...
This study aims to assess the pollen characteristics of Iranian Onagraceae based on SEM techniques to evaluate the possibility of giving them a role in systematic analysis. Pollen grains of the studied taxa included radially symmetrical, tetrad tetra-hederal, isopolar, triangular to triangular-spheroidal, 3-zonoporate, with viscin threads, rugulate...
The stigma morphology of some Iranian Onosma taxa were studied using SEM techniques, and were subsequently defined, illustrated and used for cluster analyses. Three types of stigmata structures were used in separating the taxa. Regardless that there are some taxa that are not distinguishable only by mentioned evidence, however, stigmatic features a...
Assessing priorities is the most important action in conservation programs. Rudimentary, mapping of diversity, and distribution patterns have been used to set priorities on diverse scales. The distribution patterns of plant taxa largely reflect an actual ecological niche. Convolvulaceae s.str exhibits cosmopolitan dispersal of diverse life forms an...
Onosma L. as a rich taxa in Boraginaceae including about 150–180 species, centered mainly in Irano-Turanian region. The genus faced with several systematic complexities lead to many identification problems as well as morphological polymorphism. Several authors have used setae characteristics in Onosma as the most important diagnostic evidence in de...
The genus Crocus L. (Iridaceae) is monophyletic and contains about 100 species throughout the world. Crocus species have horticultural, medicinal and pharmacological importance. Saffron is the dried styles of C. sativus and is one of the world’s most expensive spices by weight. Controversy exits about the taxonomy of the genus and the species relat...
The increasing rate of irreversible damages to natural habitats has reinforced the need for gathering biodiversity fundamental data to conservation. Priority setting is the most important step in protection programs. Solanaceae as the the one of important economic families of eudicots distributed throughout North and South America, Europe, Africa,...
The increasing rate of irreversible damages to natural habitats has reinforced the need for gathering biodiversity fundamental data to conservation. Priority setting is the most important step in protection programs. Solanaceae as the the one of important economic families of eudicots distributed throughout North and South America, Europe, Africa,...