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Effects of seed soaking with plant growth regulators (IAA, GA3, kinetin or prostart) on wheat (Triticum aestivum cv. Auqab-2000) emergence and seedling growth under normal (4 dS/cm) and saline (15 dS/cm) conditions were studied to determine their usefulness in increasing relative salt-tolerance. During emergence test, emergence percentage and mean emergence time (MET) were significantly affect ...

SUBJECT: plant growth regulators; reguladores del crecimiento vegetal; régulateur de croissance végétale

POSTED TO: Journal of Stress Physiology & Biochemistry [1997-0838]

Changes in the activity of extracellular peroxidases were measured in cell suspension cultures of potato infected by Clavibacter michiganensis subsp. sepedonicus (Spieck. et Kotth.) Skapt et Burkh. The total extracellular peroxidases activity of the resistant potato variety was higher than that of the sensitive variety both before and after infection. The enzyme of the resistant variety had a ...

SUBJECT: 发病机理; pathogenesis; pathogénèse; patogénesis; نشؤ المرض

POSTED TO: Journal of Stress Physiology & Biochemistry [1997-0838]

The influence of uncoupling of oxidative phosphorylation in mitochondria on surviving of winter wheat seedling during low-temperature stress was investigated. It was shown that infiltration of winter wheat seedling by exogenous uncouplers caused the increase of oxygen consumption, seedling’s temperature and surviving. Vice verse inhibition of electron transport through the main cytochrome and ...

SUBJECT: triticum aestivum; قمح صيفي; 普通小麦

POSTED TO: Journal of Stress Physiology & Biochemistry [1997-0838]

Photosynthesis and respiration participates in energy production by plants undo different light conditions. It looks quite important to provide a balanced regulation of these processes. It was show in presented study that succinate dehydrogenase activity drops down in intact leaves undo intensive light. There is no direct influence of light to purified enzyme. It was found that low concentrati ...

SUBJECT: معدل التنفس; 呼吸频率; respiration rate; 呼吸作用; respiración

POSTED TO: Journal of Stress Physiology & Biochemistry [1997-0838]

This article reviews the involvement of the mitochondrial systems, which maintain the balance of cell energy at different stress conditions. It is shown the functioning of the alternative oxidase, free fatty acids, uncoupling proteins, the rotenone-insensitive NAD(P)H dehydrogenases, the ADP/ATP-antiporter, the permeability transition pore and ATP-sensitive potassium channel (К+ATP). It is dis ...

SUBJECT: mitochondrie; 呼吸频率; 抗氰呼吸; respiration rate; mitocondria

POSTED TO: Journal of Stress Physiology & Biochemistry [1997-0838]

Many bacteria, including phytopathogenic ones produce extracellular polysaccharides or exopolysaccharides which are universal molecules. Causal agent of potato ring rot, Clavibacter michiganensis subspecies sepedonicus, secretes exopolysaccharides which role in pathogenesis is poorly investigated. The aim of our research is to ascertain the composition and structure of Clavibacter michiganensi ...

SUBJECT: potatoes; بطاطا; pomme de terre; papa; 马铃薯

POSTED TO: Journal of Stress Physiology & Biochemistry [1997-0838]

In order to characterize the occurrence of albino plantlets during the androgenetic process in barley (Hordeum vulgare L.), chlorophyllous content of microspore derived structures were analyzed in various cultivar. The dynamics of quantities of a and b chlorophylls and their relations within etiolated and androgenic plants of the contrasting cultivars of Igri and Cork have been compared. Resea ...

SUBJECT: albinisme; كلوروفيلات; albinismo; chlorophylle; مهق

POSTED TO: Journal of Stress Physiology & Biochemistry [1997-0838]

Effect of short-time (15 sec, 5, 15, 30 min) cold stress (0,1-0,2oC) at 0,1 μmol photons м-2 s-1 over the Spirodela polyrhiza (L.) Schleid carotenoid composition cultivated under the laboratory conditions has been studied. It is found that the sum of carotenoid pigments of Spirodela polyrhiza (L.) does not change and averages 206,9 ± 11,5 mkg/g in fresh weight. Pool increase of lutein+zeaxanth ...

SUBJECT: thermogenesis; violaxantina; violaxanthin; 生热作用; 寒冷休克

POSTED TO: Journal of Stress Physiology & Biochemistry [1997-0838]

The inoculation of the radical part of potatoes plants in tubes with bacteria Yersinia pseudotuberculosis pathogenic for human led to stem and leaf tissue colonization. At the same time visible symptoms were negligible. After isolation from plants bacteria maintained their pathogenic characteristics. The results obtained confirm the view that plants can be tanks of microorganisms pathogenic fo ...

SUBJECT: micro-organisme pathogène; 发病机理; host pathogen systems; virulent pathogens; patogenicidad

POSTED TO: Journal of Stress Physiology & Biochemistry [1997-0838]

Trying to meet the requirements in leukocytes the clinicists are facing the pressing problem of conservation of cells in a functionally valid condition which is possible in deep cryoanabiosis (-196°C). This conservation method is not, for the number of reasons, available for the purpose of a wide use. The aim of the present was development of an efficient, readily available and economical meth ...

SUBJECT: ultra congelación; deep freezing; leucocyte; temperatura de congelación; 凝固温度

POSTED TO: Journal of Stress Physiology & Biochemistry [1997-0838]