Sphaerophysa kotschyana, an endemic species from Central Anatolia: antioxidant system responses under salt stress

2013 ◽  
Vol 126 (5) ◽  
pp. 729-742 ◽  
Author(s):  
Evren Yildiztugay ◽  
Ceyda Ozfidan-Konakci ◽  
Mustafa Kucukoduk
Keyword(s):  
Salt Stress ◽  
Antioxidant System ◽  
Endemic Species ◽  
Central Anatolia ◽  
Sphaerophysa Kotschyana

scholarly journals Ethylene Supplementation Combined with Split Application of Nitrogen and Sulfur Protects Salt-Inhibited Photosynthesis through Optimization of Proline Metabolism and Antioxidant System in Mustard (Brassica juncea L.)

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1303
Author(s):  
Badar Jahan ◽  
Noushina Iqbal ◽  
Mehar Fatma ◽  
Zebus Sehar ◽  
Asim Masood ◽  
...  
Keyword(s):  
Salt Stress ◽  
Brassica Juncea ◽  
Antioxidant System ◽  
Photosynthetic Efficiency ◽  
Growth Potential ◽  
Proline Metabolism ◽  
Sowing Time ◽  
Stress Effects ◽  
Nutrient Assimilation ◽  
S Application

In the present study, the potential of ethylene as ethephon (an ethylene source) was investigated individually and in combination with split doses of nitrogen (N) and sulfur (S) soil treatments for removal of the damaging effects of salt stress (100 mM NaCl) in mustard (Brassica juncea L.). Plants were grown with 50 mg N plus 50 mg S kg−1 soil at sowing time and an equivalent dose at 20 days after sowing [N50 + S50]0d and 20d. Ethephon at 200 μL L‒1 was applied to combined split doses of N and S with or without NaCl. Plants subjected to NaCl showed a decrease in growth and photosynthetic characteristics as well as N and S assimilation, whereas proline metabolism and antioxidants increased. The application of ethephon to plants grown with split N and S doses significantly enhanced photosynthetic efficiency by increasing the assimilation of N and S, improving the concentration of proline and induction of the antioxidant system with or without NaCl. The regulation of ethylene and/or split forms of N and S application may be potential tools for not just overcoming salt stress effects in this species and in related Brassicaceae but also enhancing their photosynthesis and growth potential through increased nutrient assimilation.

scholarly journals Differential Response to Sea Salt Salinity by Nitrate and Antioxidant System in Six Soybean Varieties

2015 ◽  
Vol 48 (4) ◽  
pp. 39-50 ◽  
Author(s):  
K.M. Saad-Allah
Keyword(s):  
Salt Stress ◽  
Antioxidant System ◽  
Salt Concentration ◽  
Nitrate Uptake ◽  
Adaptive Strategy ◽  
Differential Response ◽  
Sea Salt ◽  
Negative Consequences ◽  
Gradual Decline ◽  
Glycine Max L

AbstractSix varieties of soybean (Glycine max L.) plants were grown for 30 days under three levels of sea salt salinity (0.0, 8.0 and 16.0 mS/cm2) for studying the effect of sea salt on uptake of nitrate and response of the antioxidant system for these salinity doses. Salt treatments resulted in a gradual decline in nitrate uptake by increasing sea salt concentration, which mean that this will bring negative consequences on nitrogen assimilation. However, salt treatments induced the accumulation of hydrogen peroxide and glycinebetaine in the leaves of all soybean verities as an adaptive strategy to cope with salt stress. On the other hand, there was a differential response in phenolic compounds among soybean verities as a function of salt concentration and the studied variety, which means there has a decline in phenolics under salt stress in the varieties Crawford, G21, G22 and G83, but in contrary in G35 and G82, phenolics has accumulated in response to salinity. Isozymes electrophoretic banding showed changes in peroxidase activity with sea salt, however superoxide dismutase showed stability in number and intensity of bands with salt treatments. Esterase enzyme was more sensitive to salinity and showed a gradual decline in activity by increasing salt concentration.

Effect of salt stress on growth parameters, enzymatic antioxidant system, and lipid peroxidation in wild chicory (Cichorium intybus L.)

2012 ◽  
Vol 34 (6) ◽  
pp. 2349-2358 ◽  
Author(s):  
Lucrezia Sergio ◽  
Angela De Paola ◽  
Vito Cantore ◽  
Maria Pieralice ◽  
Nicholas Anthony Cascarano ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Salt Stress ◽  
Antioxidant System ◽  
Growth Parameters ◽  
Cichorium Intybus ◽  
Enzymatic Antioxidant

scholarly journals Action of methyl jasmonate and salt stress on antioxidant system of Arabidopsis plants defective in jasmonate signaling genes

2018 ◽  
Vol 90 (5) ◽  
pp. 50-59 ◽  
Author(s):  
Т. О. Yastreb ◽  
◽  
Yu. E. Kolupaev ◽  
N. V. Shvidenko ◽  
A. P. Dmitriev ◽  
...  
Keyword(s):  
Salt Stress ◽  
Methyl Jasmonate ◽  
Antioxidant System ◽  
Jasmonate Signaling

scholarly journals Ethylene Supplementation Combined with Split Application of Nitrogen and Sulfur Protects Salt-Inhibited Photosynthesis through Optimization of Proline Metabolism and Antioxidant System in Mustard (Brassica juncea L.)

2021 ◽  
Author(s):  
Badar Jahan ◽  
Mehar Fatma ◽  
Zebus Sehar ◽  
Asim Masood ◽  
Adriano Sofo ◽  
...  
Keyword(s):  
Salt Stress ◽  
Brassica Juncea ◽  
Antioxidant System ◽  
Photosynthetic Efficiency ◽  
Proline Metabolism ◽  
Split Application ◽  
Sowing Time ◽  
Stress Effects ◽  
S Application ◽  
Split Form

In the present study, the potential of ethylene as ethephon (an ethylene source) was investigated individually or with a combination of the split dosage of nitrogen (N) and sulfur (S) soil treatments for the removal of damaging effects of salt stress (100 mM NaCl) in mustard (Brassica juncea L.). Plants were grown with 50 mg N plus 50 mg S kg−1 soil at sowing time and an equivalent dosage at 20 days after sowing ([N50 + S50]0d + [N50 + S50]20d). Ethephon at 200 μL L‒1 was applied to combined split dosage of N and S with or without NaCl. Plants subjected to NaCl showed a deceased in growth and photosynthetic characteristics as well as N and S assimilation, though, proline metabolism and antioxidants increased. The application of ethephon to plants grown with split N and S dosages significantly enhanced the photosynthetic efficiency by increasing the assimilation of N and S, improving the content of proline and induction of the antioxidant system with or without NaCl. The regulation of ethylene and/or split form N and S application may be the potential tools for overcoming salt stress effects in this species and in related Brassicaceae.

A geometric morphometric evaluation on three populations of endemic species, Dorcadion micans (Cerambycidae, Coleoptera) in Ankara Province from Turkey with a new subspecies description

Zootaxa ◽  
2021 ◽  
Vol 5004 (1) ◽  
pp. 167-180
Author(s):  
ATILAY YAĞMUR OKUTANER ◽  
ASLI DOĞAN SARIKAYA ◽  
ÖZKAN SARIKAYA ◽  
HÜSEYIN ÖZDIKMEN
Keyword(s):  
Geometric Morphometrics ◽  
Endemic Species ◽  
Biological Evolution ◽  
Morphological Characters ◽  
Central Anatolia ◽  
Isolated Populations ◽  
Geometric Morphometric ◽  
New Subspecies ◽  
Biological Features ◽  
Morphometric Evaluation

Due to some biological features, species belonging to genus Dorcadion Dalman, 1817 (Coleoptera: Cerambycidae) can be easily divided into isolated populations. This can be considered as an important factor of speciation process and allows the observation of various effects of biological evolution of taxa. These effects can be measured on morphological characters with some different approaches such as geometric morphometrics. This study aims to determine pronotum and elytra shape differences of the samples of three isolated localities of Turkey (Akyurt, Bala, and Beynam) detected in Ankara, and to contribute to taxonomic and evolutionary knowledge of Dorcadion micans Thomson (1867) by evaluating the analysis of outcomes. As a result, significant differences between populations were detected both in pronotum and elytra. Besides, common variations were observed in some morphological characters of the Bala and Beynam populations, unlike Akyurt population. Accordingly, the distinguishing characters are discussed, and the following new subspecies is described: Dorcadion micans majoripunctum ssp. nov. from Ankara province in Northern part of Central Anatolia.

Taraxacum mirabile, an enigmatic sexual halophilous endemic dandelion, represents a new section

Phytotaxa ◽  
2021 ◽  
Vol 489 (1) ◽  
pp. 49-64
Author(s):  
JAN KIRSCHNER ◽  
BAHAR GÜRDAL ◽  
JAN ŠTĚPÁNEK ◽  
VOJTĚCH ZEISEK
Keyword(s):  
Endemic Species ◽  
Multiple Root ◽  
Central Anatolia ◽  
Separate Section ◽  
Convincing Result

Taraxacum mirabile Wagenitz (Asteraceae, Cichorieae, Crepidinae), a remarkable but taxonomically unexplored endemic species of Central Anatolia, is examined in detail. It is shown to be a sexually reproducing diploid (2n=16) species. It used to be included in Taraxacum sect. Orientalia in the literature. However, the nrDNA analysis revealed that T. mirabile is remote from that section. Moreover, it exhibits a number of unique features, such as fleshy leaves with a white, cartilaginous apex, long, dense, bright white tomentum at the plant base, multiple root heads, achenes with an extremely short conical cone and with very few minute spinules, a very narrow involucre with imbricate outer phyllaries, and white, not numerous florets. The most specific feature of T. mirabile is the fine, microscopic sculpture of achene surface, consisting of hair-like protuberances, not known in other Taraxacum species. These attributes, together with the convincing result of the nrDNA analysis, qualify T. mirabile to be recognized as a member of a separate section, T. sect. Echinulata, sect. nov. The habitat and distribution of T. mirabile are described, and the character of its endemism is discussed.

Sign in / Sign up

Export Citation Format

Share Document