PMID- 28811017 OWN - NLM STAT- MEDLINE DCOM- 20180702 LR - 20181202 IS - 1873-4324 (Electronic) IS - 0003-2670 (Linking) VI - 983 DP - 2017 Aug 29 TI - Improved methodology for analysis of multiple phytohormones using sequential magnetic solid-phase extraction coupled with liquid chromatography-tandem mass spectrometry. PG - 112-120 LID - S0003-2670(17)30723-7 [pii] LID - 10.1016/j.aca.2017.06.019 [doi] AB - Phytohormones are special small molecules that play important role in plant growth and development at trace levels. Quantification of multiple phytohormones will be great helpful for researches about cross-talks that plant hormones regulate the responses of plants against both biotic and abiotic stresses by means of synergistic or antagonistic interactions. In the current study, we developed a method for profiling of phytohormones in one small sample, including indole-3-acetic acid, abscisic acid, jasmonic acid, gibberellins, cytokinins and brassinosteroids. These phytohormones mentioned above were firstly purified and separated by sequential magnetic solid-phase extraction (MSPE) and then analyzed by ultra-high performance liquid chromatography-electrospray tandem mass spectrometry (UHPLC-MS/MS). Under the optimized extraction conditions, good linearity was obtained with correlation coefficients (r) ranging from 0.9961 to 0.9998. The limits of detection (LODs, S/N = 3) were ranged from 0.45 to 126.1 pg mL(-1). The recoveries were between 85.0% and 116.2%. The relative standard deviations (RSDs) were ranged from 2.7% to 16.1%. With the proposed strategy, 23 phytohormones could be purified and analyzed from a single plant extract. Finally, 16 phytohormones could be detected in 100 mg (fresh weight) flower of Brassica napus L., including IAA, ABA, JA, 4 GAs, 3 BRs and 6 CKs with the concentration ranged from 0.09 to 305.23 ng g(-1). CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Luo, Xiao-Tong AU - Luo XT AD - Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China. FAU - Cai, Bao-Dong AU - Cai BD AD - Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China. FAU - Chen, Xi AU - Chen X AD - Wuhan Institute of Biotechnology, Wuhan 430075, China. FAU - Feng, Yu-Qi AU - Feng YQ AD - Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China. Electronic address: yqfeng@whu.edu.cn. LA - eng PT - Journal Article DEP - 20170619 PL - Netherlands TA - Anal Chim Acta JT - Analytica chimica acta JID - 0370534 RN - 0 (Plant Growth Regulators) SB - IM MH - *Chromatography, High Pressure Liquid MH - Plant Growth Regulators/*analysis MH - *Solid Phase Extraction MH - *Tandem Mass Spectrometry OTO - NOTNLM OT - Magnetic solid-phase extraction OT - Mass spectrometry OT - Phytohormones EDAT- 2017/08/16 06:00 MHDA- 2018/07/03 06:00 CRDT- 2017/08/17 06:00 PHST- 2017/02/22 00:00 [received] PHST- 2017/06/03 00:00 [revised] PHST- 2017/06/11 00:00 [accepted] PHST- 2017/08/17 06:00 [entrez] PHST- 2017/08/16 06:00 [pubmed] PHST- 2018/07/03 06:00 [medline] AID - S0003-2670(17)30723-7 [pii] AID - 10.1016/j.aca.2017.06.019 [doi] PST - ppublish SO - Anal Chim Acta. 2017 Aug 29;983:112-120. doi: 10.1016/j.aca.2017.06.019. Epub 2017 Jun 19.