Antioxidative and physiological responses of two sunflower (Helianthus annuus) cultivars under PEG-mediated drought stress

Date

2012-01-01

Author

Baloglu, Mehmet Cengiz
Kavas, Musa
Aydin, Gulsum
Öktem, Hüseyin Avni
Yücel, Ayşe Meral

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

198
views

0
downloads

Drought stress is one of the most important yield-reducing factors in crop production. Sunflower, an oilseed crop, is severely affected by abiotic stress. In this study, 2 sunflower cultivars (Musala and Aydin) were evaluated in terms of various biochemical and physiological responses under 2 different polyethylene glycol-mediated drought stress conditions. Stress-determining parameters such as malondialdehyde (MDA), hydrogen peroxide (H2O2), and proline contents were determined. Both cultivars showed similar responses at osmotic potentials of both -0.4 and -0.8 MPa. Aydin was less affected than Musala under these stress conditions. MDA, H2O2, and proline levels were similar at both -0.4 and -0.8 MPa osmotic potentials in the 2 different cultivars. The 2 cultivars differed significantly in ascorbate peroxidase and catalase enzyme activities, which were more prominent in Aydin for both stress levels. However, glutathione reductase activity did not appear to be an essential part of the antioxidative system in either of the cultivars. Engineering antioxidative enzyme levels might provide a potential mechanism to cope with drought stress in sunflower.

Subject Keywords

Helianthus annuus, Drought stress, Antioxidant enzymes, Proline

URI

https://hdl.handle.net/11511/30009

Journal

TURKISH JOURNAL OF BOTANY

DOI

https://doi.org/10.3906/bot-1111-20

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Antioxidant responses of lentil to cold and drought stress Öktem, Hüseyin Avni; Demirba, Didem; Bayrac, Abdullah Tahir; Oez, Mehmet Tufan; Oezguer, Ebru; Selcuk, Feyza; Yuecel, Meral (2008-01-01) The effects of cold and drought stress on antioxidant responses and growth parameters in shoots and roots of lentil (Lens culinaris M cv Sultan 1) seedlings were investigated. Ten-day-old hydroponically grown seedlings were subjected to drought and cold (4 degrees C) stress for 5 days. The length and fresh weight of shoots decreased significantly under both stress conditions, contrary to the increase in these growth parameters for roots under the same conditions. The oxidative damage as:generation of malond...
Gene regulation network behind drought escape, avoidance and tolerance strategies in black poplar (Populus nigra L.) Yildirim, Kubilay; Kaya, Zeki (2017-06-01) Drought is the major environmental problem limiting the productivity and survival of plant species. Here, previously identified three black poplar genotypes having contrasting response to drought were subjected to gradual soil water depletion in a pot trial to identify their physiological, morphological and antioxidation related adaptations. We also performed a microarray based transcriptome analyses on the leaves of genotypes by using Affymetrix poplar Genome Array containing 56,000 transcripts. Phenotypic...
Bayesian estimation of crop yield function: drought based wheat prediction model for tigem farms Yıldırak, Şahap Kasırga; Kalaylioglu, Zeynep; Mermer, Ali (2015-12-01) Drought is one of the biggest threats that affects agriculture. Based on recent climatic observations and future projections, drought continues to increase its harmful impact on agricultural productivity especially in the arid areas of Turkey. Wheat farming in these arid and semi-arid areas such as Central Anatolia depends heavily on precipitation, thus monitoring for drought is needed. The timing of precipitation is also as important as its quantity. This study makes use of a crop and location specific mod...
Drought Forecasting with Time Series and Machine Learning Approaches Evkaya, Ömer Ozan; Yozgatlıgil, Ceylan; Kestel, Sevtap Ayşe (null; 2017-12-08) As a main reason of undesired agricultural, economic and environmental damages, drought is one of the most important stochastic natural hazard having certain features. In order to manage the impacts of drought, more than 100 drought indices have been proposed for both monitoring and forecasting purposes [1], [3]. For different types of droughts, these indices have been used to understand the effects of dry periods including meteorological, agricultural and hydrological droughts in many distinct locations. I...
Drought-induced oxidative damage and antioxidant responses in peanut (Arachis hypogaea L.) seedlings Akcay, U. Celikkol; Ercan, O.; Kavas, M.; Yildiz, L.; Yılmaz, Çetin; Öktem, Hüseyin Avni; YÜCEL, MUSTAFA (2010-05-01) Two cultivars of peanut (Arachis hypogaea L.) which were designated as resistant (Florispan) and sensitive (Gazipasa) according to their growth retardation under drought stress conditions were compared for their oxidative damage and antioxidant responses. Sixteen days-old peanut seedlings were subjected to PEG-6000 solutions of two different osmotic potentials; -0.4 and -0.8 MPa, and various growth parameters, photosystem II activity, changes in malondialdehyde (MDA), hydrogen peroxide (H2O2) and proline le...

Citation Formats

M. C. Baloglu, M. Kavas, G. Aydin, H. A. Öktem, and A. M. Yücel, “Antioxidative and physiological responses of two sunflower (Helianthus annuus) cultivars under PEG-mediated drought stress,” TURKISH JOURNAL OF BOTANY, pp. 707–714, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30009.