Abstract

Ionizing radiation influences animal growth and early development. We have studied bio-effects of low-keV energy argon ion (LKE-AI) using Caenorhabditis elegans focusing on the effects of LKE-AI on larval development. The results showed that LKE-AI of 2–5 keV energy with fluences ranging from 2 × 1014 to 5 × 1014 ions/cm2 induced developmental delay and a decrease in mean brood size, compared to the control group. Under trypan blue staining, some damage to the cuticle was detected. Moreover, C. elegans L1 larvae of hus-1(op241), mek-2(n1989) or sos-1(cs41) deletion mutants showed higher sensitivity to exposure to LKE-AI, and dimethyl sulphoxide could rescue the developmental delay induced by LKE-AI. Our results give an initial insight in the effect of LKE-AI-induced abnormal development via cuticle damage and the generation of reactive oxygen species.

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