Low Nitrogen Priming Enhances Photosynthesis Adaptation to Water-Deficit Stress in Winter Wheat (Triticum aestivum L.) Seedlings
文献类型： 外文期刊
作者： Gao, Jingwen 1 ; Luo, Qiuci 1 ; Sun, Chuanjiao 1 ; Hu, Hang 1 ; Wang, Feng 2 ; Tian, Zhongwei 1 ; Jiang, Dong 1 ; Cao, We 1 ;
作者机构： 1.Nanjing Agr Univ, Minist Agr, Key Lab Crop Physiol Ecol & Prod Management, Nanjing, Peoples R China
2.Univ Western Australia, Sch Biol Sci, Perth, WA, Australia
3.Zhejiang Acad Agr Sci, Environm Resources & Soil Fertilizer Inst, Hangzhou, Peoples R China
关键词： drought; low nitrogen; photoinhibiton; photosynthesis; priming; stomatal; winter wheat
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）
ISSN： 1664-462X
年卷期： 2019 年 10 卷
页码：
收录情况： SCI
摘要： Drought is among the main environmental stressors that reduces wheat production. Nitrogen (N) availability affects plant adaptation to abiotic stress, but the effect of low N (LN) on drought tolerance is unclear. To identify the effect of LN priming on water-deficit stress tolerance in wheat seedlings, we primed cultivar Yangmai158 with 0.25 mM N for 7 days, and then added 20% polyethylene glycol 6000 as a water-deficit treatment for 5 days. The net photosynthetic rate (Pn), plant biomass, and plant growth rate (GR) were significantly reduced under water-deficit conditions; such decreases were less severe in LN-primed (LND) plants than non-primed (CKD) plants. The leaf relative water content (LRWC) decreased under water-deficit conditions, which in turn led to a reduced transpiration rate, stomatal conductance, and intercellular CO2 concentration (C-i), causing a stomatal limitation on photosynthesis. LN priming also enhanced root growth, resulting in a higher LRWC and less stomatal limitation in LND plants than CKD plants. PSII quantum efficiency, photochemical quenching, and maximum PSII quantum efficiency were reduced under water-deficit conditions, indicating photoinhibition. However, LN priming increased the electron flux to photorespiration and the Mehler pathway, reducing photoinhibition. In conclusion, LN priming improved the leaf water status and increased alternative electron flux to attenuate photoinhibition, thus alleviating the inhibition of photosynthesis, and growth due to water deficiency.
- 相关文献
作者其他论文 更多>>
-
Effects of Increasing CO2 Concentration on Crop Growth and Soil Ammonia-Oxidizing Microorganisms in a Fababean (Vicia faba L.) and Wheat (Triticum aestivum Yunmai) Intercropping System
作者：Dong, Xingshui;Lin, Hui;Wang, Feng;Ma, Junwei;Dong, Xingshui;Shi, Songmei;He, Xinhua;He, Xinhua;He, Xinhua
关键词：fababean; wheat; intercropping; elevated CO2; ammonia-oxidizing microorganisms
-
Long-term phosphorus addition enhances the contributions of plant lignin and microbial necromass to soil organic carbon in a rice-wheat rotation
作者：Chen, Zhaoming;Ma, Jinchuan;Wang, Feng;Ma, Junwei;Zou, Ping;Sun, Wanchun;Yu, Qiaogang;Wang, Qiang
关键词：Lignin phenol; Microbial necromass; Soil organic carbon; Microbial diversity; Phosphorus fertilization; Paddy soil
-
The mutation in the critical sterility-inducing temperature-regulating gene OsTMS5 and OsCSIT1 enhances cadmium tolerance in rice seedlings
作者：Wang, Tao;He, Yi;Wang, Tao;He, Yi;Deng, Fan;Gong, Xue;Wu, Gengwei;Wang, Lanlan;Zhang, Chi;Wang, Hua;Shen, Renfang;Zhu, Xiaofang;Huang, Jiu;Wang, Feng
关键词：Cadmium;
OsCSIT1 ; Rice -
Nitrogen-induced acidification increases soil organic carbon accrual by promoting particulate organic carbon and microbial necromass under long-term experiments in the paddy soils of East China
作者：Chen, Zhaoming;Wang, Qiang;Ma, Jinchuan;Wang, Feng;Ma, Junwei;Ye, Jing;Zou, Ping;Sun, Wanchun;Yu, Qiaogang
关键词：Nitrogen fertilization; Mineral-associated organic carbon; Microbial necromass; Particulate organic carbon; Paddy soil
-
Long-term biogas slurry application increases microbial necromass but not plant lignin contribution to soil organic carbon in paddy soils as regulated by fungal community
作者：Chen, Zhaoming;Ma, Jinchuan;Ma, Junwei;Ye, Jing;Yu, Qiaogang;Zou, Ping;Sun, Wanchun;Lin, Hui;Wang, Feng;Wang, Qiang;Zhao, Xinlin
关键词：Soil organic carbon; Lignin phenols; Microbial necromass; Microbial community structure; Biogas slurry
-
Long-term successive biochar application increases plant lignin and microbial necromass accumulation but decreases their contributions to soil organic carbon in rice-wheat cropping system
作者：Chen, Zhaoming;He, Lili;Ma, Jinchuan;Ma, Junwei;Ye, Jing;Yu, Qiaogang;Zou, Ping;Sun, Wanchun;Lin, Hui;Wang, Feng;Wang, Qiang;Zhao, Xu
关键词：amino sugars; biochar; lignin phenols; microbial necromass; paddy field; soil organic carbon
-
The enhancement of wastewater purification efficiency in ecological floating bed aquaculture through alginate oligosaccharide treatment
作者：Xu, Xueren;Li, Cong;Li, Jun;Wang, Feng;Zhou, Sheng
关键词：Algal oligosaccharide; Ecological floating bed; Water spinach; Purification efficiency
