Alleviation of Drought Stress in Wheat Using Exogenous Ulva prolifera Extract Produced by Enzymatic Hydrolysis  

作　　者：Feiyu Li Siqi Zuo Yongzhou Chi Chunying Du Zhaopeng Shen Xihong Han Xiaohui Wang Peng Wang 

机构地区：[1]College of Food Science and Engineering,Ocean University of China,Qingdao,266003,China [2]Ministry of Agriculture Key Laboratory of Seaweed Fertilizers,Qingdao Brightmoon Seaweed Group Co.Ltd.,Qingdao,266400,China [3]State Key Laboratory of Bioactive Seaweed Substances,Qingdao,266400,China

出　　处：《Journal of Renewable Materials》2020年第11期1519-1529,共11页可再生材料杂志（英文）

基　　金：The authors acknowledge the financial support from the Open Foundation of the Ministry of Agriculture Key Laboratory of Seaweed Fertilizers(MAKLSF1803);the Key Project of New&Old Energy Transformation in Shandong Province.

摘　　要：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.

关 键 词：Ulva prolifera extract enzymatic hydrolysis antioxidant capacity OSMOPROTECTANTS drought tolerance 

分 类 号：S51[农业科学—作物学]