Plant, Soil and Environment, 2007 (vol. 53), issue 12
INDEX 2007
editors
Plant Soil Environ., 2007, 53(12):I-V | DOI: 10.17221/2189-PSE 
Photosystem II of barley seedlings under cadmium and lead stress
H.M. Kalaji, T. Loboda
Plant Soil Environ., 2007, 53(12):511-516 | DOI: 10.17221/2191-PSE
Chlorophyll a fluorescence measurements were carried out on two barley (Hordeum vulgare L.) cultivars Arabi Abiad and Arabi Aswad at 8 and 14 days after emergence to identify their early tolerance mechanism for heavy metals (25 and 50μM of cadmium and lead). Transient fluorescence curves (OJIP curves) and energy flux models showed different specific reactions of photosystem II (PSII) of each cultivar to each type of stress. After 7 days of lead stress application plants of cv. A. Aswad showed weaker I and P peaks on the OJIP curve than control plants, and the appearance of a new K step; parameters of phenomenological energy fluxes for cv....
Antioxidant enzyme activities in Allium species and their cultivars under water stress
J. Csiszár, E. Lantos, I. Tari, E. Madoşă, B. Wodala, Á. Vashegyi, F. Horváth, A. Pécsváradi, M. Szabó, B. Bartha, Á. Gallé, A. Lazăr, G. Coradini, M. Staicu, S. Postelnicu, S. Mihacea, G. Nedelea, L. Erdei
Plant Soil Environ., 2007, 53(12):517-523 | DOI: 10.17221/2192-PSE
We compared the enzymatic antioxidative defence mechanisms of some regional subspecies of Allium (A. cepa L., A. ascalonicum auct. hort., A. sativum L.) cultivated mainly in the western regions of Romania, and two modern Hungarian climate resistant F 1 hybrids. The variability in the activities of antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), glutathione reductase (GR) and glutathione S-transferase (GST) and their changes under soil moisture stress were investigated. 1-week-long water stress revealed that among three Allium species, relative water content decreased only in A....
Effects of pretreatments of some growth regulators on the stomata movements of barley seedlings grown under saline (NaCl) conditions
K. ÇAVUŞOGLU, S. Kiliç, K. Kabar
Plant Soil Environ., 2007, 53(12):524-528 | DOI: 10.17221/2193-PSE
In this work, the effects of double, triple and quadruple combinations of gibberellic acid, kinetin, 24-epibrassinolide and polyamines (cadaverine, putrescine, spermidine, spermine) on the stomata movements in the leaves of barley seedlings grown under saline conditions were studied. In the control seedlings, the stomata number, stomata index and stomata length increased in the upper surfaces of leaves in comparison with their lower surfaces. In addition, the epidermis cell number in the leaves of control plants were fewer in the upper surface than that in the lower surface, but the stomata were statistically in the equal width in both surfaces. As...
The effects of treatment with polyamines on dry matter, oil and flavonoid contents in salinity stressed chamomile and sweet marjoram
Ali R.M., Abbas H.M., Kamal R.K.
Plant Soil Environ., 2007, 53(12):529-543 | DOI: 10.17221/2188-PSE
he study was undertaken to determine a possible role of polyamines (putrescine, spermidine, spermine) as antioxidants in salt tolerance of Chamomilla recutita and Origanum majorana. Salinity generally induced variable changes in growth, contents of oil and flavonoids of both plants; foliar application of any polyamines counterbalanced the effects of salinity. In general, the degree of stimulation differed according to the type and concentration of the used additive and the type of the plant.
Effect of interactions between nickel and other heavy metals on the soil microbiological properties
J. Wyszkowska, E. Boros, J. Kucharski
Plant Soil Environ., 2007, 53(12):544-552 | DOI: 10.17221/2190-PSE
A pot greenhouse experiment was performed to determine the effect of contamination with nickel interacting with other heavy metals on the microbiological properties of soil. The study was conducted on samples of soils classified under natural conditions as typical Eutric Cambisol developed from heavy loamy sand and typical Eutric Cambisol developed from light silty loam. Soil material was contaminated with nickel in the amount of 50 and 200 mg Ni2+/kg. The treatments with 200 mg Ni2+/kg were additionally contaminated with other heavy metals (Zn2+, Cu2+, Pb2+, Cd2+, Cr6+),...