Tracing the Geographical Origin of Tobacco at Two Spatial Scales by Stable Isotope and Element Analyses with Chemometrics

Cui, Lili; Chen, Huan; Yuan, Yuwei; Zhu, Fengpeng; Nie, Jing; Han, Shulei; Fu, Yaning; Hou, Hongwei; Hu, Qingyuan; Chen, Zengping

doi:10.2139/ssrn.4375835

Cited by 1 publication

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“…Tobacco is one of the main cash crops in China, and the production of quality tobacco leaves plays a crucial role in the country's economy [20]. Previous studies have mainly centered on grain and vegetable crops such as wheat [14], lettuce [15], corn [16], rice [21], and beans (Phaseolus vulgaris L.) [22], with most of them being experimental studies on hydroponics.…”

Section: Introductionmentioning

confidence: 99%

Response of Tobacco (<i>Nicotiana tabacum</i> L.) Growth to Soil Microplastic Pollution

Wang,

Gao,

Cai

et al. 2024

Pol. J. Environ. Stud.

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Microplastics (MPs) have distributed in agricultural soil. However, the effects of MPs on the growth of tobacco remain unclear. In this study, a pot experiment was conducted to evaluate the effects of linear low-density polyethylene (LLDPE) MPs at four different concentrations (0 mg•kg -1 as control, 10 mg•kg -1 , 100 mg•kg -1 , and 1000 mg•kg -1 ) on soil enzyme activity, physiological characteristics, and tobacco growth. The results showed that compared with the control, the treatments of 100 and 1000 mg•kg -1 significantly inhibited the activities of soil catalase (S-CAT) and soil sucrase (S-SC). Compared with the control, the 1000 mg•kg -1 treatment significantly altered root morphology, inhibited tobacco growth, and water content, resulting in a significant decrease in chlorophyll a content, catalase (CAT) and superoxide dismutase (SOD) activities in tobacco leaves, thereby incited a significant increase in malondialdehyde (MDA) content and peroxidase (POD) activity. Interestingly, the 10 mg•kg -1 treatment stimulated the activity of soil urease (S-UE) and root biomass. Overall, this study highlights the significant impact of MPs on soil enzymes, oxidative damage to tobacco, and inhibition of tobacco growth and development. It emphasizes the environmental risks of MPs pollution in soil, particularly for commercial crops like tobacco, and provides insights for controlling MPs abundance in the environment. Further research is needed to investigate the underlying mechanisms of MPs' effects on metabolism and genes in the soil-tobacco-microbial system.

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