Kouki Rim, Ayachi Rim, Ferreira Renata, Sleimi Noomene
LR. RME-Resources, Materials and Ecosystems Faculty of Sciences of Bizerte University of Carthage Bizerte Tunisia.
CERENA Centro de Recursos Naturais e Ambiente Instituto Superior Técnico Universidade de Lisboa Lisboa Portugal.
Food Sci Nutr. 2021 May 5;9(6):3280-3288. doi: 10.1002/fsn3.2294. eCollection 2021 Jun.
Aluminum (Al) is an ubiquitously present element in soil; it is considered as a major problem in crop production that affects plant growth and development on acid soils. The aim of this work was to determine the germination parameters, to quantify the water status and growth, to assess the Al accumulation, and antioxidant enzyme activities in plants to evaluate the stress exerted by aluminum in L. For germination test, increasing doses of Al were used (0, 200, 500, 1,000, and 2,000 μM). Results showed that germination was stimulated with 500 of Al. Aluminum effects on development were studied by treating the plants with different concentrations of Al (100, 200, 300, and 500 µM, Al) during 45 days. As regards to the plant's growth, water content, and dry biomass production there was a slight increase. On the other hand, the activities of the antioxidant enzymes were disturbed by aluminum stress. Data indicate that the catalase (CAT) activity showed a decrease in the different parts of the plant. However, guaiacol peroxidase (GPX) and ascorbate peroxidase (APX) activities were significantly stimulated. Studying the effects of Al-induced stress allowed us to conclude that cucumber has a high ability to accumulate this element in the roots.
铝（Al）是土壤中普遍存在的元素；它被认为是作物生产中的一个主要问题，会影响酸性土壤上植物的生长发育。这项工作的目的是确定发芽参数，量化水分状况和生长情况，评估植物中铝的积累以及抗氧化酶活性，以评估铝对黄瓜施加的胁迫。对于发芽试验，使用了递增剂量的铝（0、200、500、1000和2000 μM）。结果表明，500 μM的铝刺激了发芽。通过在45天内用不同浓度的铝（100、200、300和500 μM，Al）处理植物来研究铝对发育的影响。关于植物的生长、含水量和干生物量生产，有轻微增加。另一方面，抗氧化酶的活性受到铝胁迫的干扰。数据表明，过氧化氢酶（CAT）活性在植物的不同部位均呈现下降。然而，愈创木酚过氧化物酶（GPX）和抗坏血酸过氧化物酶（APX）的活性受到显著刺激。研究铝诱导的胁迫效应使我们得出结论，黄瓜在根部积累这种元素的能力很强。
