Open Access. Powered by Scholars. Published by Universities.®
- Publication Year
- Publication
- Publication Type
Articles 1 - 16 of 16
Full-Text Articles in Forest Sciences
Assessment Of Drought Stress Responsive Genes Expression Profiles And Proline Accumulation In A Diverse Set Of Grapevine Rootstocks, Canan Yüksel Özmen, Funda Yilmaz Baydu, Mohammad Hasanzadeh, Mert Öktem, Günseli̇ Babaoğlu, Umut Ki̇bar, Saber Delpasand Khabbazi, Kemal Kazan, Ali̇ Ergül
Assessment Of Drought Stress Responsive Genes Expression Profiles And Proline Accumulation In A Diverse Set Of Grapevine Rootstocks, Canan Yüksel Özmen, Funda Yilmaz Baydu, Mohammad Hasanzadeh, Mert Öktem, Günseli̇ Babaoğlu, Umut Ki̇bar, Saber Delpasand Khabbazi, Kemal Kazan, Ali̇ Ergül
Turkish Journal of Agriculture and Forestry
In order to study plant responses to drought stress, it is important to have markers for such responses. This issue has been a challenge for decades and numerous traits have been used for this purpose. In the current study, the influence of drought stress on proline biosynthesis, leaf water potential, and also gene expression levels of 10 genes probably involved in drought stress response regulation pathways were investigated. Also, all experiments were performed in both root and leaf tissues of studied rootstocks to investigate the response of plant tissues which is more suitable for the assessment of possible markers. As …
Determination Of Cadmium And/Or Drought Stress Effects On Some Plant Phytohormone Contents And Hormone Gene Expressions In Bean (Phaseolus Vulgaris L), Melek Eki̇nci̇, Ertan Yildirim, Güleray Ağar, Esra Arslan Yüksel, Murat Aydin, Selda Örs, Razi̇ye Kul
Determination Of Cadmium And/Or Drought Stress Effects On Some Plant Phytohormone Contents And Hormone Gene Expressions In Bean (Phaseolus Vulgaris L), Melek Eki̇nci̇, Ertan Yildirim, Güleray Ağar, Esra Arslan Yüksel, Murat Aydin, Selda Örs, Razi̇ye Kul
Turkish Journal of Agriculture and Forestry
Plants can sometimes be under the influence of more than one stress factor. In this case, combined stress factors can cause different responses in plants. In this study, the phytohormonal activity and hormone gene expressions of beans (Phaseolus vulgaris L.) were investigated in different drought levels and soils with different levels of cadmium accumulation. Plants were grown at 4 different cadmium (Cd) levels (Cd: 0, Cd1: 100, Cd2: 150, and Cd3: 200 mg kg$^{-1}$) and 3 irrigation levels (D0: 100%, D1: 75%, and D2: 50% of field capacity). Abscisic acid (ABA), indole acetic acid (IAA), gibberellic acid (GA), salicylic acid …
Quantifying And Predicting Drought Performance In Woody Semi-Arid Seedlings In South Texas: Implications For Enhancing Drought Resilience In Restoration, Zarek Contreras
Quantifying And Predicting Drought Performance In Woody Semi-Arid Seedlings In South Texas: Implications For Enhancing Drought Resilience In Restoration, Zarek Contreras
Theses and Dissertations
Increasingly frequent and severe droughts in the Lower Rio Grande Valley National Wildlife Refuge have been observed to cause large variation in species-specific mortality patterns in young seedlings, spanning 6 – 43 % mortality within the first year. To understand the underlying mechanisms behind this, we subjected seedlings of five woody semi-arid species (Celtis pallida, Forestiera angustifolia, Sideroxylon celastrinum, Phaulothalmnus spinescens, and Zanthoxylum fagara) to a point-of-no-return drought experiment in order to (1) identify potential metrics capable of predicting species wilting and mortality responses, and (2) to understand the underlying mechanisms that correspond to species drought performance …
Splitting The Difference: Heterogeneous Soil Moisture Availability Affects Aboveground And Belowground Reserve And Mass Allocation In Trembling Aspen, Ashley T. Hart, Morgane Merlin, Erin Wiley, Simon M. Landhäusser
Splitting The Difference: Heterogeneous Soil Moisture Availability Affects Aboveground And Belowground Reserve And Mass Allocation In Trembling Aspen, Ashley T. Hart, Morgane Merlin, Erin Wiley, Simon M. Landhäusser
Aspen Bibliography
When exploring the impact of resource availability on perennial plants, artificial treatments often apply conditions homogeneously across space and time, even though this rarely reflects conditions in natural systems. To investigate the effects of spatially heterogeneous soil moisture on morphological and physiological responses, trembling aspen (Populus tremuloides) saplings were used in a split-pot experiment. Following the division of the root systems, saplings were established for a full year and then subjected to either heterogeneous (portion of the root system exposed to non-lethal drought) or homogeneous (whole root system exposed to non-lethal drought or well-watered) treatments. Above- and belowground …
Effects Of Thinning On Dynamics And Drought Resistance Of Aspen-White Spruce Mixtures: Results From Two Study Sites In Saskatchewan, Philip G. Comeau
Effects Of Thinning On Dynamics And Drought Resistance Of Aspen-White Spruce Mixtures: Results From Two Study Sites In Saskatchewan, Philip G. Comeau
Aspen Bibliography
Drought stress associated with warm temperatures is causing increased mortality and reduced growth of trees in drier portions of the boreal forests of western Canada with both warming and drought expected to increase over the coming decades. While thinning is often shown to reduce drought stress, there is little information on its effects in stands comprised of mixtures of trembling aspen and white spruce that are common in the forests of this region. This study examined effects of pre-commercial thinning on aspen and spruce growth, response to drought stress, and stand dynamics for two study sites located in Saskatchewan, Canada. …
Drought- Conditioning Of Quaking Aspen (Populus Tremuloides Michx.) Seedlings During Nursery Production Modifies Seedling Anatomy And Physiology, Joshua L. Sloan, Owen T. Burney, Jeremiah R. Pinto
Drought- Conditioning Of Quaking Aspen (Populus Tremuloides Michx.) Seedlings During Nursery Production Modifies Seedling Anatomy And Physiology, Joshua L. Sloan, Owen T. Burney, Jeremiah R. Pinto
Aspen Bibliography
In the western US, quaking aspen (Populus tremuloides Michx.) regenerates primarily by root suckers after disturbances such as low to moderate severity fires. Planting aspen seedlings grown from seed may provide a mechanism to improve restoration success and genetic diversity on severely disturbed sites. However, few studies have examined the use of container-grown aspen seedlings for restoration purposes from both the outplanting and nursery production perspective. Thus, the purpose of this novel study was to examine how alterations in irrigation levels during nursery production across three seed sources would impact seedling performance attributes on harsh, dry outplanting sites. Irrigation …
Sudden Aspen Decline: A Review Of Pattern And Process In A Changing Climate, Jack A. Singer, Rob Turnbull, Mark Foster, Charles Bettigole, Brent R. Frey, Michelle C. Downey, Kristofer R. Covey, Mark S. Ashton
Sudden Aspen Decline: A Review Of Pattern And Process In A Changing Climate, Jack A. Singer, Rob Turnbull, Mark Foster, Charles Bettigole, Brent R. Frey, Michelle C. Downey, Kristofer R. Covey, Mark S. Ashton
Aspen Bibliography
The American quaking aspen (Populus tremuloides Michx.) and its close relative, the Eurasian quaking aspen (Populus tremula L.), cover a realm that is perhaps the most expansive of all tree species in the world. In North America, sudden aspen decline (SAD) is a growing concern that marks the rapid decline of quaking aspen trees leading to mortality at the stand and landscape scale. Research suggests that drought and water stress are the primary causes of SAD. Predisposing factors (age, structure, and landscape position), as well as associated stressors (i.e., pests and pathogens), have been linked to mortality in affected stands. …
Increased Soil Temperature Stimulates Changes In Carbon, Nitrogen, And Mass Loss In The Fine Roots Of Pinus Koraiensis Under Experimental Warming And Drought, Seung Hyun Han, Seongjun Kim, Hanna Chang, Guanlin Li, Yowhan Son
Increased Soil Temperature Stimulates Changes In Carbon, Nitrogen, And Mass Loss In The Fine Roots Of Pinus Koraiensis Under Experimental Warming And Drought, Seung Hyun Han, Seongjun Kim, Hanna Chang, Guanlin Li, Yowhan Son
Turkish Journal of Agriculture and Forestry
The effects of warming (+3 °C) and drought (-30% precipitation) on the fine root decomposition of Pinus koraiensis seedlings were examined using a litter bag method. The study site included a full factorial design with two temperature and two precipitation levels, with three replicates. Litter bags containing fine root litter of 2-year-old P. koraiensis seedlings were retrieved after 3, 6, and 12 months of decomposition. After 12 months, the mass loss of fine roots was significantly increased in response to warming (control = 31.1%, warming = 35.9%, drought = 29.2%, and warming plus drought = 35.5%); no change was observed …
Evaluation Of Drought Tolerance Of Winter Bread Wheat Genotypes Underdrip Irrigation And Rain-Fed Conditions, Jamala Mursalova, Zeynal Akparov, Javid Ojaghi, Mahammad Eldarov, Savaş Belen, Nurberdi Gummadov, Alexey Morgounov
Evaluation Of Drought Tolerance Of Winter Bread Wheat Genotypes Underdrip Irrigation And Rain-Fed Conditions, Jamala Mursalova, Zeynal Akparov, Javid Ojaghi, Mahammad Eldarov, Savaş Belen, Nurberdi Gummadov, Alexey Morgounov
Turkish Journal of Agriculture and Forestry
To evaluate the genetic diversity in 48 winter bread wheat genotypes originating from different countries, an experiment based on randomized complete block design with 4 replications was carried out in drip irrigation and rain-fed conditions at the field station of the Transitional Zone Agricultural Research Institute, Eskişehir, Turkey in 2011 and 2012. Based on grain yield under rain-fed and irrigated conditions, drought tolerance indices, i.e. stress susceptibility index (SSI), stress tolerance index (STI), tolerance index (TOL), mean productivity (MP), and geometric mean productivity (GMP), were calculated to identify genotypes with better yield and drought tolerance. Analysis of variance indicated that …
Seed Priming With Cacl2 And Ridge Planting For Improved Drought Resistance In Maize, Muhammad Bismillah Khan, Mubshar Hussain, Abid Raza, Shahid Farooq, Khawar Jabran
Seed Priming With Cacl2 And Ridge Planting For Improved Drought Resistance In Maize, Muhammad Bismillah Khan, Mubshar Hussain, Abid Raza, Shahid Farooq, Khawar Jabran
Turkish Journal of Agriculture and Forestry
Drought-induced losses in crop output have forced the scientific community to develop efficient management strategies to cope with the adversities of drought stress. This field trial was done to assess the role of seed priming techniques and planting methods for improving drought resistance in Pakistani hybrid maize in 2011. Maize seeds were soaked in an aerated solution of CaCl2 (osmopriming; $\Psi$s -1.25 MPa) and distilled water (hydropriming), while untreated dry seeds were taken as controls. Primed and untreated seeds were sown on either ridges or a flat seedbed and were subjected to drought at vegetative and tasseling stages. Drought was …
Genotypic Variability For Tuber Yield, Biomass, And Drought Tolerance In Jerusalem Artichoke Germplasm, Ruttanachira Ruttanaprasert, Poramate Banterng, Sanun Jogloy, Nimitr Vorasoot, Thawan Kesmala, Rameshwar S. Kanwar, Carl Corley Holbrook, Aran Patanothai
Genotypic Variability For Tuber Yield, Biomass, And Drought Tolerance In Jerusalem Artichoke Germplasm, Ruttanachira Ruttanaprasert, Poramate Banterng, Sanun Jogloy, Nimitr Vorasoot, Thawan Kesmala, Rameshwar S. Kanwar, Carl Corley Holbrook, Aran Patanothai
Turkish Journal of Agriculture and Forestry
Jerusalem artichoke could be an alternative feedstock for bioenergy during times when there are shortages of other raw materials for the ethanol industry. However, insufficient water under rainfed conditions is a major cause of Jerusalem artichoke losses. Genetic variation for drought tolerance is an essential prerequisite for the development of Jerusalem artichoke cultivars with improved drought tolerance. The objectives of this study were to determine the effects of drought stress on tuber dry weight and biomass and to investigate the genotypic variability in Jerusalem artichoke germplasm. The line-source sprinkler technique was used to compare moisture responses of a range of …
Transcriptomic Analysis Of Tomato Lines Reveals Putative Stress-Specific Biomarkers, Monther Taha Sadder, Abdullah Alsadon, Mahmoud Wahb-Allah
Transcriptomic Analysis Of Tomato Lines Reveals Putative Stress-Specific Biomarkers, Monther Taha Sadder, Abdullah Alsadon, Mahmoud Wahb-Allah
Turkish Journal of Agriculture and Forestry
Different abiotic stresses recruit dedicated signaling and regulatory genes in plants. Genome-wide stress-specific biomarkers were investigated in tomatoes. Three major abiotic stresses were compared: drought, heat, and salinity. For each stress type, 2 different tomato lines were included: susceptible and tolerant. Gene expression was examined by hybridizing to an available tomato microarray. Several stress responsive genes were upregulated in tolerant as well as in susceptible lines for each stress. Comparative analysis of gene expression in response to stress (drought, heat, or salinity) resolved a number of common biomarkers, while other groups of putative biomarkers were associated with each abiotic stress. …
Characterization For Drought Resistance At Early Stages Of Wheat Genotypes Based On Survival, Coleoptile Length, And Seedling Vigor, Ali̇ Öztürk, Si̇nan Bayram, Kami̇l Hali̇loğlu, Murat Aydin, Özcan Çağlar, Sancar Bulut
Characterization For Drought Resistance At Early Stages Of Wheat Genotypes Based On Survival, Coleoptile Length, And Seedling Vigor, Ali̇ Öztürk, Si̇nan Bayram, Kami̇l Hali̇loğlu, Murat Aydin, Özcan Çağlar, Sancar Bulut
Turkish Journal of Agriculture and Forestry
In order to develop genotypes having a stable higher yield, it is necessary to characterize genetic resources based on drought adaptation, determine the suitable genotypes, and use them in breeding programs. This study was carried out in greenhouses, plant growth chambers, and research farms of the Faculty of Agriculture at Atatürk University. A total of 64 certified and local bread wheat genotypes were used to test survival after drought, coleoptile length, and seedling vigor. There were significant differences with respect to the selection parameters in this study. Seedling survival ranged from 18.5% to 51.1% and coleoptile lengths were 3974 mm. …
Tolerance And Avoidance Responses To Salinity And Water Stresses In Calotropis Procera And Suaeda Aegyptiaca, Ali Hassan Ibrahim
Tolerance And Avoidance Responses To Salinity And Water Stresses In Calotropis Procera And Suaeda Aegyptiaca, Ali Hassan Ibrahim
Turkish Journal of Agriculture and Forestry
This study was designed to evaluate the response of 2 wild shrubs, Calotropis procera and Suaeda aegyptiaca, to salinity (100% seawater), drought, and waterlogging stresses. The 90-day-old plants were subjected to the stress treatments for 3 weeks, and growth and some physiological parameters were evaluated. The total plant dry mass of C. procera plants was reduced by 40%, whereas S. aegyptiaca was not significantly affected by salinity stress. Water deficit and waterlogging stresses significantly reduced the total dry mass of both species. Under all conditions, the root/shoot ratio in C. procera was 3-fold higher than in S. aegyptiaca. All applied …
Plant Water Relations And Photosynthetic Activity In Three Tunisian Chickpea (Cicer Arietinum L.) Genotypes Subjected To Drought, Abdelmajid Krouma
Plant Water Relations And Photosynthetic Activity In Three Tunisian Chickpea (Cicer Arietinum L.) Genotypes Subjected To Drought, Abdelmajid Krouma
Turkish Journal of Agriculture and Forestry
Chickpea (Cicer arietinum L.) is an important food crop grown under rainfed conditions in Mediterranean regions in which drought is a major limiting factor for production. In these areas little attention is given to legumes, and efforts to identify drought-tolerant genotypes are primarily focused on major cereal crops. In the current study a greenhouse experiment was conducted to assess the effects of drought stress on plant growth, photosynthesis, and water relations in 3 Tunisian chickpea genotypes (Cicer arietinum L.). Drought was applied, and soil humidity was maintained at 30% of field capacity (stressed plants) or 100% of field capacity (control …
Effect Of Early Season Drought Stress On Growth Characteristics Of Sugar Beet Genotypes, Rahim Mohammadian, M. Moghaddam, Hassan Rahimian, S. Y. Sadeghian
Effect Of Early Season Drought Stress On Growth Characteristics Of Sugar Beet Genotypes, Rahim Mohammadian, M. Moghaddam, Hassan Rahimian, S. Y. Sadeghian
Turkish Journal of Agriculture and Forestry
This study was conducted to determine the effects of early season drought stress on some plant characteristics of 9 sugar beet genotypes in the Khorasan Agricultural and Natural Resource Research Station, NE Iran. The experimental design was a split plot with a randomized complete block arrangement. Leaf area index, leaf dry weight, shoot dry weight and root dry weight decreased under drought stress compared to non-stress conditions. The decrease was more pronounced as the rate of stress increased. Leaf area index was more affected by water stress than was leaf weight (losses of leaf area indices were 14.1% and 66.6% …