title: Hexaconazole-Cu complex improves the salt tolerance of Triticum aestivum seedlings.
abstract: Hexaconazole is one of the triazole complexes that are broadly used as systemic fungicides with non-traditional plant growth regulator properties. Hexaconazole-Cu complex (Hex-Cu) is a new triazole derivative, and the biological effect of Hex-Cu has been rarely studied. In this work, we investigated the functions of Hex-Cu in regulating growth and the response to salt stress in the seedlings of Triticum aestivum. Pretreated with 60μmolL(-1) Hex-Cu, the seedling plants got increased root/shoot ratio by 42.0%, and the contents of chlorophyll and soluble protein were also increased by 38.1% and 27.9%, respectively. Furthermore, Hex-Cu alleviated the growth inhibition caused by salt stress, enabled the seedlings to maintain a higher proline content and lower malondialdehyde accumulation. The functions of Hex-Cu in regulating the expression of proline synthetase (P5CS and P5CR) genes were investigated by quantitative real-time PCR (qPCR). Under 100mmolL(-1) NaCl stress, the expression of P5CS and P5CR in the seedlings by Hex-Cu pretreatment were significantly up-regulated. It attributed to the enhanced salt tolerance in plants.
authors.affiliation: Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Northwest University, Xi'an 710069, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.affiliation: Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Northwest University, Xi'an 710069, China.
authors.forename: Cuiyu
authors.initials: C
authors.lastname: Sun
authors.affiliation: Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Northwest University, Xi'an 710069, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Yu
authors.affiliation: Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Northwest University, Xi'an 710069, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Wang
authors.affiliation: Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Northwest University, Xi'an 710069, China.
authors.forename: Tongtong
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Northwest University, Xi'an 710069, China. Electronic address: buhy@nwu.edu.cn.
authors.forename: Huaiyu
authors.initials: H
authors.lastname: Bu
mesh_terms: D002734:Chlorophyll / Q000378:metabolism; D008315:Malondialdehyde / Q000378:metabolism; D011392:Proline / Q000378:metabolism; D055049:Salt Tolerance; D014230:Triazoles / Q000494:pharmacology*; D014908:Triticum / Q000254:growth & development / Q000378:metabolism / Q000502:physiology*
chemical_list: D014230:Triazoles; D002734:Chlorophyll; D008315:Malondialdehyde; D011392:Proline; C409722:hexaconazole
keywords: Hexaconazole–Cu complex; Plant growth regulation; Proline accumulation; Quantitative real-time PCR; Salt stress; Triticum aestivum