Endogenous ABA level modulates the effects of CO2 elevation and soil water deficit on growth, water and nitrogen use efficiencies in barley and tomato plants
Endogenous ABA level modulates the effects of CO2 elevation and soil water deficit on growth, water and nitrogen use efficiencies in barley and tomato plants
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内源 ABA 水平调节 CO2 升高和土壤水分亏缺对大麦和番茄植物生长、水和氮利用效率的影响
DOI：
10.1016/j.agwat.2021.106808
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发表时间：
2021-04
影响因子：
6.7
通讯作者：
Fulai Liu
中科院分区：
文献类型：
--
作者：
Zhenhua Wei;Liang Fang;Xiangnan Li;Jie Liu;Fulai Liu
大气CO2浓度升高（e[CO2]）可以缓解土壤水分亏缺的影响，但其机制尚不清楚。本研究旨在探讨不同内源脱落酸（阿坝）水平是否调节大麦和番茄对土壤水分亏缺和[CO2]胁迫的响应。将野生型（WT）基因型（Steptoe大麦和AC番茄）及其相应的ABA缺陷突变体（Az 34大麦和AC-flacca）分别在具有环境（a[CO2]，400 ppm）和de [CO2]（800 ppm）的温室细胞中的盆中生长，并充分浇水或暴露于土壤水分亏缺。结果表明，与正常灌溉相比，土壤水分亏缺降低了番茄各基因型的地上干物质（ADM）、叶面积（LA）和比叶面积（SLA），提高了水分利用效率（WUE），而CO2浓度升高了番茄各基因型的ADM和LA。此外，它降低SLA，叶片氮浓度，同时提高WUE和氮利用效率（NUE）在野生型植物，而不是ABA缺陷型突变体。这些结果表明，内源阿坝水平在调节大麦和番茄根系对CO2环境的WUE和NUE响应中起着重要作用，从而进一步加深了对作物适应未来气候变化的生理机制的认识。
Atmospheric CO2elevation (e[CO2]) could alleviate the impact of soil water deficit, yet the underlying mechanisms remains largely elusive. This study aimed to investigate whether different endogenous abscisic acid (ABA) level modulates the response of barley and tomato plants to soil water deficit combined withe[CO2]. Wild type (WT) genotypes (Steptoe barley and AC tomato) and their corresponding ABA-deficient mutants (Az34barley and AC-flacca) were grown in pots separately in greenhouse cells with ambient (a[CO2], 400 ppm) ande[CO2] (800 ppm) and were either well-watered or exposed to soil water deficit. The results showed that, compared to well-watered regime, soil water deficit decreased aboveground dry matter (ADM), leaf area (LA) and specific leaf area (SLA) while enhanced water use efficiency (WUE) in all genotypes.e[CO2] increased ADM and LA in tomato genotypes. Moreover, it reduced SLA, leaf N concentration while improved WUE and nitrogen use efficiency (NUE) in WT plants, not in ABA-deficient mutants. These results indicate that endogenous ABA level played an important role in modulating the response of WUE and NUE of barley and tomato toe[CO2] environment, which advances our knowledge on the physiological mechanisms of crop plants adapt to future climate changed scenarios.
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影响因子：
7.3
作者：
McGrath, Justin M.;Lobell, David B.
通讯作者：
Lobell, David B.
影响因子：
6.9
作者：
Aranjuelo I;Sanz-Sáez Á;Jauregui I;Irigoyen JJ;Araus JL;Sánchez-Díaz M;Erice G
通讯作者：
Erice G
影响因子：
1
作者：
A. R. Reddy;G. K. Rasineni;A. S. Raghavendra
通讯作者：
A. R. Reddy;G. K. Rasineni;A. S. Raghavendra
影响因子：
20.5
作者：
Engineer CB;Hashimoto-Sugimoto M;Negi J;Israelsson-Nordström M;Azoulay-Shemer T;Rappel WJ;Iba K;Schroeder JI
通讯作者：
Schroeder JI
影响因子：
4.9
作者：
Butterly, Clayton R.;Armstrong, Roger;Tang, Caixian
通讯作者：
Tang, Caixian