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Ion concentration and energy response of two wheat cultivars to salt stress
Journal of Plant Nutrition ( IF 2.1 ) Pub Date : 2020-03-23 , DOI: 10.1080/01904167.2020.1739293
Kazem Poustini 1 , Alireza Esmaeili 1 , Alireza Abbasi 1 , Amir Sadeghpour 2
Affiliation  

Abstract Comprehensive understanding of physiological and biochemical principles of tolerance to salt can lead to successful breeding of crop varieties tolerant to salt stress. To examine the content of adenylate and the percentage of energy charge under saline conditions, a pot experiment was conducted using two wheat (Triticum aestivum L.) cultivars; one salt tolerant (Roshan) and one sensitive to salt stress (Kavir). The experiment had two NaCl salinity treatments. The control with Electrical Conductivity (ECs) of 1 dS m−1, and salinity treatment with ECs of 16 dS m−1 (150 mM). The experimental design was a complete randomized block design with factorial arrangements and three replicates. Wheat dry matter, sodium (Na+) and potassium (K+) ion concentrations, ratio of K+/Na+, adenosine triphosphate (ATP), adenosine diphosphate (ADP), and adenosine monophosphate (AMP) concentrations and the percentage of energy charge were measured. Our results indicated that salt stress affected both cultivars. The salt-tolerant cultivar (Roshan) had less dry matter reduction compared to the no-salt stress (control) and its concentration of K+, K+/Na+ ratio, the concentration of ATP and ADP and energy charge were higher compared to the salt-sensitive cultivar (Kavir), reflecting its ability to tolerate salt stress condition. Kavir had higher concentration of Na+ and AMP compared to Roshan. Based on our findings, change in energy level and metabolic status due to Na+ accumulation in wheat is an effective factor on salt tolerance and plant growth.

中文翻译:

两个小麦品种对盐胁迫的离子浓度和能量响应

摘要 全面了解耐盐生理生化原理,可以成功培育耐盐作物品种。为了检查盐水条件下腺苷酸的含量和能量电荷的百分比,使用两个小麦 (Triticum aestivum L.) 栽培品种进行盆栽试验;一种耐盐(Roshan)和一种对盐胁迫敏感(Kavir)。实验进行了两次 NaCl 盐度处理。电导率 (EC) 为 1 dS m-1 的对照,以及 EC 为 16 dS m-1 (150 mM) 的盐度处理。实验设计是具有因子安排和三个重复的完整随机区组设计。小麦干物质、钠 (Na+) 和钾 (K+) 离子浓度、K+/Na+ 比、三磷酸腺苷 (ATP)、二磷酸腺苷 (ADP)、和腺苷一磷酸 (AMP) 浓度和能量电荷的百分比被测量。我们的结果表明盐胁迫影响了两个品种。与无盐胁迫(对照)相比,耐盐品种(Roshan)的干物质减少较少,其 K+ 浓度、K+/Na+ 比率、ATP 和 ADP 浓度以及能量电荷与盐胁迫相比更高 -敏感品种(Kavir),反映其耐受盐胁迫条件的能力。与 Roshan 相比,Kavir 具有更高浓度的 Na+ 和 AMP。根据我们的研究结果,小麦中 Na+ 积累引起的能量水平和代谢状态的变化是影响耐盐性和植物生长的有效因素。与无盐胁迫(对照)相比,耐盐品种(Roshan)的干物质减少较少,其 K+ 浓度、K+/Na+ 比率、ATP 和 ADP 浓度以及能量电荷与盐胁迫相比更高 -敏感品种(Kavir),反映其耐受盐胁迫条件的能力。与 Roshan 相比,Kavir 具有更高浓度的 Na+ 和 AMP。根据我们的研究结果,小麦中 Na+ 积累引起的能量水平和代谢状态的变化是影响耐盐性和植物生长的有效因素。与无盐胁迫(对照)相比,耐盐品种(Roshan)的干物质减少较少,其 K+ 浓度、K+/Na+ 比率、ATP 和 ADP 浓度以及能量电荷与盐胁迫相比更高 -敏感品种(Kavir),反映其耐受盐胁迫条件的能力。与 Roshan 相比,Kavir 具有更高浓度的 Na+ 和 AMP。根据我们的研究结果,小麦中 Na+ 积累引起的能量水平和代谢状态的变化是影响耐盐性和植物生长的有效因素。反映其耐受盐胁迫条件的能力。与 Roshan 相比,Kavir 具有更高浓度的 Na+ 和 AMP。根据我们的研究结果,小麦中 Na+ 积累引起的能量水平和代谢状态的变化是影响耐盐性和植物生长的有效因素。反映其耐受盐胁迫条件的能力。与 Roshan 相比,Kavir 具有更高浓度的 Na+ 和 AMP。根据我们的研究结果,小麦中 Na+ 积累引起的能量水平和代谢状态的变化是影响耐盐性和植物生长的有效因素。
更新日期:2020-03-23
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