2021年12月8日 星期三
芦苇叶片中总氮同位素及游离氨基酸浓度对水淹的响应
Response of total nitrogen isotope and free amino acid concentration in leaf of Phragmites australis to flooding
2019年 第28卷 第4期 页码[107-109]    下载全文[0.9MB]  
Abstract

Total nitrogen content, total nitrogen isotope (δ15N), and free amino acid concentration in leaf of Phragmites australis (Cav.) Trin. ex Steud. under flooding for 0-11 d were studied. The results show that with the increase of flooding days, there is no significant variation in total nitrogen content in leaf of P. australis, δ15N value shows a gradual tend to be negative, and concentrations of total free amino acids, Ser, Asp, and Asn first increase and then decrease. Under flooding for 1 d, δ15N value decreases obviously and free amino acid concentration increases obviously compared with those under flooding for 0 d. It is indicated that δ15N value and free amino acid concentration are good indicators of P. australis under flooding condition.

关键词芦苇; 水淹; 总氮同位素; 游离氨基酸浓度
Key wordsPhragmites australis (Cav.) Trin. ex Steud.; flooding; total nitrogen isotope; free amino acid concentration
作者赖媛媛1,2, 朱仁果2, 罗笠2, 吕哲2, 孙启斌3
所在单位1. 昆明理工大学机电工程学院, 云南 昆明 650093;2. 东华理工大学 江西省大气污染成因与控制重点实验室, 江西 南昌330013; 3. 中山大学大气科学学院, 广东 广州510275
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基金项目国家自然科学基金资助项目(41463007)