Activity and isoenzyme composition of peroxidase in the vegetative organs of Japanese quince under steppe zone conditions

Abstract

Parameters of peroxidase complex are indicators of the adaptable processes which are taking place in plants under the environment influence. In this work the general activity dynamics and peroxidase isoenzyme composition in vegetative organs of Japanese quince (Chaenomeles Lindl.) were studied. The four species introduced in a steppe zone of Ukraine were researched: Ch. japonica (Thunb.) Lindl., Ch. speciosa (Sweet) Nak., Ch. cathayensis (Hemsl.) Schneid., Ch. × superba (Frahm) Red.). It was determined that the enzyme activity of these species possesses specific features subject to the phases of seasonal development and in response to the action of the hydrothermal stress. The highest enzyme activity in the period of intensive growth and flowering, with a subsequent sharp drop towards the middle of summer and further smoother decrease during the phase of physiological rest were observed in the leaves of Ch. speciosa and Ch. cathayensis. A higher peroxidase activity was a characteristic of Ch. japonica and Ch. × superba in the middle of the vegetative period, which can be considered a display of adaptation processes in the conditions of an unfavourable hydrothermal regime. The dynamics of changes in the quantitative composition of isoperoxidases was similar to the dynamics of enzyme activity. As a result of the generalization of the obtained data it is possible to consider that Ch. japonica and Ch. × superba are the steadiest in the conditions of the region.

Morphometrical and biological indicators in definition decorative representatives to the Saintpaulia H. Wendl.

“…Одна из основных задач ботанического сада ДНУ имени Олеся Гончараинтродукция растений в защищённый грунт из других климатических зон на фоне климатических особенностей Степного Приднепровья [9][10][11][12][13][14]. Среди многих интересных объектов учебной лаборатории тропиков и субтропиков особое место занимают сорта рода Saintpaulia [5,15].…”

Dynamics of protection antioxidant system of representatives of Amelanchier Medik. genus during ontogenesis under Steppe Pridniprov’e conditions

“…Види ірги добре переносять посуху і можуть рости на піщаних ділянках, незважаючи на те, що вони є мезофітами. В умовах степової зони України основним негативним чинником є недостатня водозабезпеченість на фоні високих температур влітку і ранньою осінню, що обмежує успішність інтродукції рослин (Prisedsky et al, 2017).…”

Perculiarities of introduction of Araliaceae Juss. in botanical gardens (Kyiv, Ukraine)

“…Recently technogenic impact and climate change affect the state of living organisms: plants (Lykholat & Hryhoryuk, 2005;Khromykh et al, 2018;Prisedsky et al, 2017), animals and people (Peregrym et al, 2014). In these conditions, introduction of introduced species into landscaping enhances the range of local spectrum of species having transformative environment properties (Alexeyeva et al, 2016).…”