Study on the extraction, purification and quantification of jasmonic acid, abscisic acid and indole-3-acetic acid in plants.
BACKGROUND
Jasmonic acid (JA), abscisic acid (ABA) and indole-3-acetic acid (IAA) are important plant hormones. Plant hormones are difficult to analyse because they occur in small concentrations and other substances in the plant interfere with their detection.


OBJECTIVE
To develop a new, inexpensive procedure for the rapid extraction and purification of IAA, ABA and JA from various plant species.


METHODS
Samples were prepared by extraction of plant tissues with methanol and ethyl acetate. Then the extracts were further purified and enriched with C(18) cartridges. The final extracts were derivatised with diazomethane and then measured by GC-MS. The results of the new methodology were compared with those of the Creelman and Mullet procedure.


RESULTS
Sequential elution of the assimilates from the C(18 )cartridges revealed that IAA and ABA eluted in 40% methanol, while JA subsequently eluted in 60% methanol. The new plant hormone extraction and purification procedure produced results that were comparable to those obtained with the Creelman and Mullet's procedure. This new procedure requires only 0.5 g leaf samples to quantify these compounds with high reliability and can simultaneously determine the concentrations of the three plant hormones.


CONCLUSIONS
A simple, inexpensive method was developed for determining endogenous IAA, ABA and JA concentrations in plant tissue.
Zhang
Feng Juan
FJ
Department of Life Science, Hebei Normal University of Science and Technology, Changli, Hebei 066600, People's Republic of China.
Jin
You Ju
YJ
Xu
Xing You
XY
Lu
Rong Chun
RC
Chen
Hua Jun
HJ
D000040:Abscisic Acid / Q000302:isolation & purification*; D000085:Acetates / Q000737:chemistry; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D003517:Cyclopentanes / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry; D007210:Indoleacetic Acids / Q000302:isolation & purification*; D000432:Methanol / Q000737:chemistry; D054883:Oxylipins / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry; D010944:Plants / Q000737:chemistry*; D012015:Reference Standards
D000085:Acetates; D003517:Cyclopentanes; D007210:Indoleacetic Acids; D054883:Oxylipins; C011006:jasmonic acid; C030737:indoleacetic acid; D000040:Abscisic Acid; C007650:ethyl acetate; D000432:Methanol