Environmental Sciences Department, Faculty of Natural Resources, Yazd University, Yazd, Iran.
Soil Science Department, University of Tehran, Tehran, Iran.
Environ Monit Assess. 2023 Jun 13;195(7):838. doi: 10.1007/s10661-023-11436-x.
Dust causes adverse effects on the physiological and biochemical properties of plants, and under soil salinity conditions, these effects seem to be intensified, which limits their use in the development of the green belt around or within cities. In the research, the effect of salt (0, 30, and 60 dS m) on air pollution (dust, 0 and 1.5 g m 30 days) tolerance index (APTI), peroxidase activity, and protein content of three desert species Seidlitzia rosmarinus, Haloxylon aphyllum, and Nitraria schoberi was investigated. The results indicated that the use of dust alone did not change the concentration of total chlorophyll in H. aphyllum, while it decreased the concentration of total chlorophyll by 18% in N. schoberi and 21% in S. rosmarinus. Under salt stress conditions, before and after applying dust, the concentration of total chlorophyll decreased in S. rosmarinus and N. schoberi plants, but there was no change in H. aphyllum. The amount of ascorbic acid, peroxide activity, and pH increased significantly with increasing salinity level before and after applying dust. Applying dust alone increased pH value only in N. schoberi and the amount of ascorbic acid and peroxidase in all three plants. Applying dust alone reduced relative water content and APTI only in N. schoberi plant and the amount of protein in all three plants. At salinity level of 60 dS m and with application of dust treatment, APTI was decreased by 10, 15, and 9% compared to its control before application of dust, respectively, in H. aphyllum, N. schoberi, and S. rosmarinus plants. Therefore, it was found that N. schoberi, which may be used as a bioindicator of air quality, has a lower APTI than S. rosmarinus and H. aphyllum, which may be served as suitable sinks to survive the air pollution (the development of a design on green belt around or within the city), under conditions of simultaneous application of dust and salt.
粉尘会对植物的生理生化特性产生不利影响，而在土壤盐度条件下，这些影响似乎会加剧，从而限制了它们在城市周边或内部绿化带开发中的应用。在研究中，考察了盐度（0、30 和 60 dS m）对三种沙漠物种（迷迭香、白刺和白梭梭）的空气污染（粉尘，0 和 1.5 g m 30 天）耐受指数（APTI）、过氧化物酶活性和蛋白质含量的影响。结果表明，单独使用粉尘并未改变白刺中总叶绿素的浓度，而使白梭梭中的总叶绿素浓度降低了 18%，迷迭香中的总叶绿素浓度降低了 21%。在盐胁迫条件下，在施尘前后，迷迭香和白梭梭植物中的总叶绿素浓度均降低，但白刺中的总叶绿素浓度没有变化。在施尘前后，随着盐度的升高，三种植物中的抗坏血酸、过氧化物酶活性和 pH 值均显著增加。单独施尘仅增加了白梭梭中的 pH 值和三种植物中的抗坏血酸和过氧化物酶的含量。单独施尘仅降低了白刺中的相对水含量和 APTI，以及三种植物中的蛋白质含量。在 60 dS m 的盐度水平下，与单独施尘处理相比，粉尘处理后 H. aphyllum、N. schoberi 和 S. rosmarinus 植物的 APTI 分别降低了 10%、15%和 9%。因此，研究发现，白梭梭的 APTI 比迷迭香和白刺低，可能被用作空气质量的生物指示剂，而在同时施尘和盐的条件下，白梭梭可能作为适宜的汇来应对空气污染（城市周边或内部绿化带的设计开发）。
