The Antioxidant Defense System during Lanzhou Lily Scales Storage Is Modulated by Hydrogen Sulfide

As an important gaseous regulator, hydrogen sulfide (H2S) is involved in various aspects of plant processes, including seed germination, stomatal movement, and postharvest senescence. The preservation capacity Lanzhou lily (Lilium davidii var. unicolor Salisb) scales fumigated with or without exogenously applied sodium hydrosulfide (NaHS, a H2S donor) was investigated the current study. Results indicate that NaHS fumigation able to extend storage life elicit endogenous production optimal concentration at 0.8 mM. Moreover, (0.8 mM) led higher soluble sugar, protein, ascorbic acid levels lower total phenolic flavonoid contents compared those control. application mM also reduced lipid peroxidation level reactive oxygen species (ROS) accumulation scales, as indicated by malondialdehyde (MDA) content, relative conductivity, lipoxygenase (LOX) activity, O2− rate, per-oxide (H2O2) content. Further, treated exhibited significantly activities superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), (APX). Collectively, our data provide new insight into how senescence might be alleviated enhancing antioxidant defense systems.