Biotin plays an important role in Arabidopsis thaliana seedlings under carbonate stress.

摘要: Abstract Globally, many saline-alkali soils are rich in NaHCO3 and Na2CO3, which characterized by a high pH Carbonate stress caused this kind of soil severely damages plant cells inhibits growth. Biotin HCO3− participate the first rate-limiting reaction fatty acid biosynthesis pathway, but whether biotin contributes to responses carbonate is unclear. In study, we revealed that concentrations inhibited Arabidopsis (Arabidopsis thaliana) seedling However, specific decreased inhibitory effects other compound at germination stages. Additionally, treatment increased endogenous content expression AtBIO2, encodes synthase. Moreover, phenotypic analyses indicated overexpression AtBIO2 enhanced tolerance stress, whereas mutations had opposite effect. Furthermore, stress-induced accumulation reactive oxygen species was lower plants overexpressing than wild-type bio2 mutants. Accordingly, biotin, an essential vitamin for plants, can enhance resistance stress.