Proline, Sugars, and Antioxidant Enzymes Respond to Drought Stress in the Leaves of Strawberry Plants

被引:48
作者
Sun, Cunhua [1 ]
Li, Xuehua [1 ]
Hu, Yulong [1 ]
Zhao, Pingyi [1 ]
Xu, Tian [1 ]
Sun, Jian [1 ]
Gao, Xiali [1 ]
机构
[1] Jiangsu Normal Univ, Coll Life Sci, Xuzhou 221116, Jiangsu, Peoples R China
关键词
antioxidant systems; Fragaria x ananassa; lipid peroxidation; osmotically active solutes; water deficit; FRAGARIA-X-ANANASSA; WATER-STRESS; CHLOROPHYLL FLUORESCENCE; MALONDIALDEHYDE CONTENT; GLUTATHIONE-REDUCTASE; SUPEROXIDE-DISMUTASE; DEFICIT; IRRIGATION; TOLERANCE; CULTIVARS;
D O I
10.7235/hort.2015.15054
中图分类号
S6 [园艺];
学科分类号
0902 ;
摘要
Drought is a severe abiotic stress that affects global crop production. A drought model was created for 'Toyonoka' Fragaria x ananassa, and the effects of drought stress on contents of proline, sugars, and antioxidant enzyme activities were investigated. Strawberry transplants with identical growth were chosen for the experiments and the randomized design included four replications (10 plants per block). The experimental sets differed in the moisture level of the culture medium relative to the range of moisture content as follows: control, 70-85%; mild drought stress, 50-60%; moderate drought stress, 40-50%; and severe drought stress, 30-40%. Drought stress was imposed by limiting irrigation. Plants were sampled and physiological parameters were measured on 0, 2, 4, 6, 8, and 10 days after the commencement of drought stress. The water potential of strawberry leaves decreased in the plants under mild, moderate, and severe stress during the course of the water stress treatment and exhibited a significant difference from the control. Strawberry leaves subjected to drought stress had higher accumulation of proline, sugars, and malondialdehyde, and higher activities of superoxide dismutase, peroxidase, and catalase than leaves of control plants. Malondialdehyde levels increased in parallel with the severity and duration of drought stress. By contrast, antioxidant enzyme activity displayed dynamic responses to drought stress, first increasing and subsequently decreasing as the severity and duration of drought stress increased. These results suggest that strawberry plants respond to drought stress by altering the activities of antioxidant enzymes and the levels of osmotically active metabolites. These biochemical response changes may confer adaptation to drought stress and improve the capacity of plants to withstand water-deficit conditions.
引用
收藏
页码:625 / 632
页数:8
相关论文
共 41 条
[31]   The effect of NaCl on antioxidant enzyme activities in potato seedlings [J].
Rahnama, H ;
Ebrahimzadeh, H .
BIOLOGIA PLANTARUM, 2005, 49 (01) :93-97
[32]   Interaction effects of root-zone salinity and solar irradiance on the physiology and biochemistry of Olea europaea [J].
Remorini, Damiano ;
Carlos Melgar, Juan ;
Guidi, Lucia ;
Degl'lnnocenti, Elena ;
Castelli, Silvana ;
Laura Traversi, Maria ;
Massai, Rossano ;
Tattini, Massimiliano .
ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 2009, 65 (2-3) :210-219
[33]  
SAMARAS Y, 1995, ENV PLANT B, P161
[34]   Antioxidant response resides in the shoot in reciprocal grafts of drought-tolerant and drought-sensitive cultivars in tomato under water stress [J].
Sanchez-Rodriguez, Eva ;
del Mar Rubio-Wilhelmi, Maria ;
Blasco, Begona ;
Leyva, Rocio ;
Romero, Luis ;
Manuel Ruiz, Juan .
PLANT SCIENCE, 2012, 188 :89-96
[35]   Regulation and function of ascorbate peroxidase isoenzymes [J].
Shigeoka, S ;
Ishikawa, T ;
Tamoi, M ;
Miyagawa, Y ;
Takeda, T ;
Yabuta, Y ;
Yoshimura, K .
JOURNAL OF EXPERIMENTAL BOTANY, 2002, 53 (372) :1305-1319
[36]   Effects of different irradiance levels on some antioxidant enzymes and on malondialdehyde content during rewatering in olive tree [J].
Sofo, A ;
Dichio, B ;
Xiloyannis, C ;
Masia, A .
PLANT SCIENCE, 2004, 166 (02) :293-302
[37]  
Sun CH, 2013, EUR J HORTIC SCI, V78, P106
[38]   Effect of water deficit irrigation and inoculation with Botrytis cinerea on strawberry (Fragaria x ananassa) fruit quality [J].
Terry, Leon A. ;
Chope, Gemma A. ;
Bordonaba, Jordi Gine .
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2007, 55 (26) :10812-10819
[39]   Photosynthetic rate, chlorophyll fluorescence parameters, and lipid peroxidation of maize leaves as affected by zinc deficiency [J].
Wang, H ;
Jin, JY .
PHOTOSYNTHETICA, 2005, 43 (04) :591-596
[40]  
Yang XinGuang Yang XinGuang, 2006, Acta Prataculturae Sinica, V15, P37