期刊
JOURNAL OF RENEWABLE MATERIALS
卷 8, 期 11, 页码 1519-1529出版社
TECH SCIENCE PRESS
DOI: 10.32604/jrm.2020.011453
关键词
Ulva prolifera extract; enzymatic hydrolysis; antioxidant capacity; osmoprotectants; drought tolerance
资金
- Open Foundation of the Ministry of Agriculture Key Laboratory of Seaweed Fertilizers [MAKLSF1803]
- Key Project of New & Old Energy Transformation in Shandong Province
Drought is one of the major abiotic stresses that affect plant growth and reduce agricultural productivity. Use of algal extract as a biostimulant is gaining increased attention from researchers. This study aimed to investigate the potential of Ulva prolifera extract (UE) as a biostimulant when enzymatically extracted under conditions of water deficit. UE treatments (0.02%, 0.06%, and 0.1%) significantly improved the shoot length, root length, and dry weight of roots after 120 h of drought stress relative to that in treatment with the negative control. An increase in catalase (CAT) and peroxidase (POD) activity was also observed that resulted in improved antioxidant capacity. Application of 0.1% UE reduced the malondialdehyde (MDA) content by 30.06% compared with that in the negative control. In addition, the soluble sugar and protein content in wheat treated with 0.1% UE was increased by 23.10% and 93.51%, respectively, resulting in adjustment of the osmotic pressure. Results suggest that UE could significantly enhance the drought tolerance of wheat. This study provides a basis for increasing the value of UE as a biostimulant.
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