热冲击和干燥对黄杨(buxus sempervirens l .)的影响叶片的光系统ii和抗氧化系统活性

Q4 Environmental Science

Contributii Botanice Pub Date : 2022-12-30 DOI:10.24193/contrib.bot.57.8

A. Dascaliuc, T. Ralea, Nina Zdioruc, P. Cuza

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引用次数: 0

摘要

本研究旨在研究一、二年生黄杨（Buxus semperverrens L.）叶片对热休克（HS）和干燥作用的反应。这些因素影响叶片的光系统II活性和叶片提取物对过氧化氢的降解。这些过程的发展是特定的，取决于叶片的年龄和收集分析的季节。因此，所研究的特征可以确保制定新的、快速的方法来评估叶片对高温的抵抗力，这取决于植被的时期（季节）及其年龄。在一年中的不同季节，箱叶对HS的抗性往往与季节温度相对应，在夏季达到最高水平，在春季和秋季达到中等水平，在冬季达到最低水平。无论季节如何，一年生的叶子比两年生的叶子更具抵抗力，从HS损伤中恢复的能力更高。

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THE INFLUENCE OF HEAT SHOCK AND DESSICATION ON BOXWOOD (BUXUS SEMPERVIRENS L.) LEAVES' PHOTOSYSTEM II AND ANTIOXIDANT SYSTEMS ACTIVITY

This research aimed to investigate the response of one- and two-year-old Box (Buxus sempervirens L.) leaves to the action of heat shock (HS) and desiccation. These factors influenced the photosystem II activity of the leaves and the degradation of hydrogen peroxide by leaf extracts. The development of these processes was specific depending on the age of the leaves and season of their collection for analysis. Thus, the studied characteristics could assure the elaboration of new, rapid methods of assessing the resistance of leaves to high temperatures, depending on the period (season) of vegetation and their age. At different seasons of the year, the resistance of box leaves to HS tends to correspond to seasonal temperatures, reaching the highest level in summer, intermediate level in spring and autumn, and the lowest in winter. Regardless of the season, the one-year-old leaves are more resistant and have a higher capacity to recover from HS damage than the two-year-old leaves.

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来源期刊

Contributii Botanice Environmental Science-Ecology

CiteScore

0.70

自引率

0.00%

发文量

期刊介绍： Contributii Botanice is an international, peer-reviewed journal publishing scientifically sound papers in the fields of Plant Systematics, Phytosociology, Plant Physiology and Morphology, Plant Ecology, Population Ecology, Ecosystem Ecology, Phytogeography, Phytopathology, Microbiology, Paleobotany, Plant Conservation and Cell/Molecular Plant Biology. Papers of mostly taxonomic nature or focussed on floristics and phytosociology will only be considered if they exceed the pure descriptive approach and have relevance interpreting patterns in the above mentioned plant sciences.