201. Jasmonate-Elicited Stress Induces Metabolic Change in the Leaves of Leucaena leucocephala
- Author
-
Amy G. W. Gong, Yunfei Yuan, Yingchao Xu, Shuangyan Chen, Zhenru Tao, Yu Jin, Zhong-Yu Zhou, Karl Wah Keung Tsim, and Tina T. X. Dong
- Subjects
0106 biological sciences ,0301 basic medicine ,Magnetic Resonance Spectroscopy ,principal component analysis ,Metabolite ,Pharmaceutical Science ,Cyclopentanes ,Environment ,Leucaena leucocephala ,01 natural sciences ,Article ,Analytical Chemistry ,lcsh:QD241-441 ,03 medical and health sciences ,chemistry.chemical_compound ,lcsh:Organic chemistry ,Stress, Physiological ,elicitors ,Drug Discovery ,Metabolome ,Metabolomics ,Herbivory ,Oxylipins ,Jasmonate ,Physical and Theoretical Chemistry ,Threonine ,biology ,Jasmonic acid ,Organic Chemistry ,Fabaceae ,biology.organism_classification ,NMR ,partial least squares discriminant analysis ,environmental stress ,Carbon ,Lactic acid ,Plant Leaves ,030104 developmental biology ,chemistry ,Biochemistry ,Chemistry (miscellaneous) ,Glycine ,Molecular Medicine ,Protons ,Energy Metabolism ,010606 plant biology & botany - Abstract
The plant Leucaena leucocephala was exposed to four jasmonate elicitors, i.e., jasmonic acid (JA), methyl jasmonic acid (MeJA), jasmonoyl-l-isoleucine (JA-Ile) and 6-ethyl indanoyl glycine conjugate (2-[(6-ethyl-1-oxo-indane-4-carbonyl)-amino]-acetic acid methyl ester) (CGM). The treatment was to mimic the herbivores and wounding stresses. By using NMR spectroscopy along with chemometric analysis, including principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA), the changes of metabolites in the leaves of L. leucocephala were determined under the stress as induced by the four elicitors. The challenge of JA-Ile caused an accumulation of lactic acid (6), β-glucose (10), alanine (12), threonine (13), steroids (18), 3,4-dihydroxypyridine (19) and an unidentified compound 20. The chemometric analysis of the PCA and PLS-DA models indicated that the alternation of metabolites triggered by JA, MeJA, and CGM treatments were very minimum. In contrast, the treatment by JA-Ile could induce the most significant metabolic changes in the leaves. Moreover, there was very minimal new metabolite being detected in responding to the jasmonate-induced stresses. The results showed some metabolite concentrations changed after application of the elicitors, which may be related to a high level of tolerance to stress conditions as well as the strong ecological suitability of L. leucocephala.
- Published
- 2018
- Full Text
- View/download PDF