您好，欢迎访问广东省农业科学院 机构知识库！
广东省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Effects of elevated CO2 and nitrogen supply on leaf gas exchange, plant water relations and nutrient uptake of tomato plants exposed to progressive soil drying

文献类型： 外文期刊

作者： Yang, Xin 1 ; Zhang, Peng 1 ; Wei, Zhenhua 1 ; Liu, Jie 1 ; Hu, Xiaotao 1 ; Liu, Fulai 3 ;

作者机构： 1.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Weihui Rd 23, Yangling 712100, Shaanxi, Peoples R China

2.Guangdong Acad Agr Sci, Inst Facil Agr, Guangzhou 510640, Peoples R China

3.Univ Copenhagen, Fac Sci, Dept Plant & Environm Sci, Hojbakkegaard Alle 13, DK-2630 Taastrup, Denmark

4.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Mollisols Agroecol, Changchun 130102, Peoples R China

5.Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling 712100, Shaanxi, Peoples R China

关键词： Nitrogen supply; Drought stress; Elevated CO2; Leaf gas exchange; Nutrients acquisition

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.342； 五年影响因子：4.342 ）

ISSN： 0304-4238

年卷期： 2022 年 292 卷

页码：

收录情况： SCI

摘要： The effects of nitrogen (N) supply on the response of leaf gas exchange, leaf water relations and plant nutrient uptake of tomato plants exposed to progressive soil drying under elevated CO2 (e[CO2], 800 ppm) were inves-tigated. Two tomato genotypes differing in their endogenous abscisic acid (ABA) level, i.e. Ailsa Craig and its ABA-deficient mutant (flacca) were grown in pots in greenhouse cells with either ambient CO2 (a[CO2], 400 ppm) or e[CO2]. Two N levels, i.e., N1, 0.5 g pot(-1) and N2, 1.0 g pot(-1) were used and the N fertilizer (NH4NO3) was applied with the irrigation water before transplanting. The results showed that e[CO2] and N-2 increased photosynthesis and water use efficiency (WUE) of tomato plants. N2 improved plant water relations by sensi-tizing the decline of transpiration rate during soil drying. The plant N acquisition and major ionic concentrations in xylem sap were lowered under e[CO2], such negative effect was compensated by increasing N supply. For WT, the ABA concentrations in leaf ([ABA]leaf) and xylem sap ([ABA]xylem) were increased with the decrease of the fraction of transpirable soil water, whereas, for flacca this was only observed in [ABA]leaf. Compared to WT, flacca had lower xylem sap ionic concentrations and WUE. Collectively, the responses of tomato plants to e[CO2] and N supply under progressive soil drying were genotypic-dependent, and endogenous ABA level could play an important role in modulating the responses.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：广东省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台