Ibrahim Wael M, Ali Refaat M, Hemida Khaulood A, Sayed Makram A
Botany Department, Faculty of Science, Fayoum University, Fayoum, Egypt.
Plant Protection Department, Faculty of Agriculture, Fayoum University, Fayoum, Egypt.
ScientificWorldJournal. 2014;2014:847290. doi: 10.1155/2014/847290. Epub 2014 Nov 10.
Seaweeds are potentially excellent sources of highly bioactive materials that could represent useful leads in the alleviation of salinity stress. The effects of presoaking wheat grains in water extract of Ulva lactuca on growth, some enzymatic activities, and protein pattern of salinized plants were investigated in this study. Algal presoaking of grains demonstrated a highly significant enhancement in the percentage of seed germination and growth parameters. The activity of superoxide dismutase (SOD) and catalase (CAT) increased with increasing the algal extract concentration while activity of ascorbate peroxidase (APX) and glutathione reductase (GR) was decreased with increasing concentration of algal extract more than 1% (w/v). The protein pattern of wheat seedling showed 12 newly formed bands as result of algal extract treatments compared with control. The bioactive components in U. lactuca extract such as ascorbic acid, betaine, glutathione, and proline could potentially participate in the alleviation of salinity stress. Therefore, algal presoaking is proved to be an effective technique to improve the growth of wheat seedlings under salt stress conditions.
海藻有可能是高生物活性物质的优质来源，这些物质可能是缓解盐胁迫的有用线索。本研究调查了用石莼水提取物预浸小麦籽粒对盐渍化植物生长、一些酶活性和蛋白质模式的影响。籽粒的藻类预浸显示出种子发芽率和生长参数有极显著提高。超氧化物歧化酶（SOD）和过氧化氢酶（CAT）的活性随着藻类提取物浓度的增加而增加，而当藻类提取物浓度超过1%（w/v）时，抗坏血酸过氧化物酶（APX）和谷胱甘肽还原酶（GR）的活性则降低。与对照相比，藻类提取物处理使小麦幼苗的蛋白质模式显示出12条新形成的条带。石莼提取物中的生物活性成分，如抗坏血酸、甜菜碱、谷胱甘肽和脯氨酸，可能参与缓解盐胁迫。因此，藻类预浸被证明是一种在盐胁迫条件下促进小麦幼苗生长的有效技术。
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