Rice seed priming with sodium selenate: Effects on germination, seedling growth, and biochemical attributes

被引:59
|
作者
Du, Bin [1 ,2 ]
Luo, Haowen [1 ,2 ]
He, Longxin [1 ,2 ]
Zhang, Lihe [1 ]
Liu, Yangfang [1 ]
Mo, Zhaowen [1 ,2 ]
Pan, Shenggang [1 ,2 ]
Tian, Hua [1 ,2 ]
Duan, Meiyang [1 ,2 ]
Tang, Xiangru [1 ,2 ]
机构
[1] South China Agr Univ, Coll Agr, Dept Crop Sci & Technol, Guangzhou 510642, Guangdong, Peoples R China
[2] Minist Agr, Sci Observing & Expt Stn Crop Cultivat South Chin, Guangzhou 510642, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
SELENIUM CONTENT; ANTIOXIDANT; PLANTS; WHEAT; L; BIOFORTIFICATION; PEROXIDASE; SUGARS; ROLES;
D O I
10.1038/s41598-019-40849-3
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The aim of this study was to determine the effects of sodium selenate (15, 30, 45, 60, 75, 90, and 105 mg kg(-1)) on the germination and seedling growth of Changnongjing 1 rice (Oryza sativa L.) at 25 degrees C and 30 degrees C. Low selenate concentrations induced shorter and more uniform germination periods than did ultrapure water at both temperatures. Seedlings primed with low selenate concentrations were superior to those primed with ultrapure water in terms of plant height, fresh weight, dry matter accumulation, and soluble carbohydrate and protein contents. Lower selenate concentrations (15-75 mg kg(-1)) induced higher chlorophyll and phenol contents in seedlings than did ultrapure water. Lower selenate concentrations also increased the superoxide dismutase (SOD), peroxidase (PDX), catalase (CAT), and glutathione peroxidase (GPx) contents in seedlings and significantly decreased the stress-related malondialdehyde (MDA) content compared to ultrapure water. In conclusion, rice seedling germination and growth were promoted by priming with low selenate concentrations (15-75 mg kg(-1)) but inhibited by priming with high selenate concentrations (90-105 mg kg(-1)).
引用
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页数:9
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