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Effects of 1-butyl-3-methylimidazolium Chloride on the Photosynthetic System and Metabolism of Maize (Zea Mays L.) Seedlings

Effects of 1-butyl-3-methylimidazolium Chloride on the Photosynthetic System and Metabolism of Maize (Zea Mays L.) Seedlings

Yajun Li, Miao Yang, Le Liu, Ruoyu Zhang, Yuhui Cui, Pengfei Dang, Xuemei Ge, Xiaohong Chen

Ecotoxicol Environ Saf. 2018 Oct;161:648-654.

PMID: 29933134

Abstract:

Ionic liquids (ILs) are widely used in various chemical processes. However, a growing number of studies have found that ILs are potentially toxic to different types of living organisms, including crops. The present study analysed the effects of 1-butyl-3-methylimidazolium chloride ([C4mim]Cl) on the photosynthetic system and metabolism of maize seedlings. Results showed that [C4mim]Cl could significantly reduce maize leaf chlorophyll level and cause extensive leaf bleaching. The activity of photosystem II (PSII) was significantly inhibited when seedlings exposed to higher concentration of [C4mim]Cl. The maximum quantum yield of PSII and the potential efficiency of PSII were reduced by 63% and 88% under 800 mg/L [C4mim]Cl treatment in comparison with the control treatment. The RNA sequencing analysis performed to examine gene expression profiles of maize leaves under [C4mim]Cl treatment revealed 639 differentially expressed genes (DEGs), 115 of which were categorized into different metabolic pathways. Among these DEGs, the seven genes involved in the photosynthetic Calvin cycle were down-regulated by [C4mim]Cl exposure. For carbohydrates and amino acids metabolism, the genes for starch synthesis were down-regulated, while the genes for amino acids and protein degradation were up-regulated. The changes observed in these major metabolic pathways might be an important reason for [C4mim]Cl toxicity.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP79917901	1-Butyl-3-methylimidazolium chloride		79917-90-1	Price

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