Boron deficiency causes accumulation of chlorogenic acid and caffeoyl polyamine conjugates in tobacco leaves |
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| Authors: | Camacho-Cristóbal Juan J Lunar Loreto Lafont Fernando Baumert Alfred González-Fontes Agustín |
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| Affiliation: | Departamento de Ciencias Ambientales, Facultad de Ciencias Experimentales, Universidad Pablo de Olavide, Sevilla, Spain. |
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| Abstract: | The effects of boron (B) deficiency on carbohydrate concentrations and the pattern of phenolic compounds were studied in leaves of tobacco plants (Nicotiana tabacum L.). Plants grown under B deficiency showed a notable increase in leaf carbohydrates and total phenolic compounds when compared to controls. The qualitative composition of phenolics was analyzed by HPLC-mass spectrometry. The level of caffeate conjugates (i.e., chlorogenic acid) increased in B-deficient plants. In addition, the accumulation of two caffeic acid amides (N-caffeoylputrescine and putative dicaffeoylspermidine) was observed. |
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| Keywords: | Boron deficiency Caffeic acid conjugates Phenylpropanoids Nicotiana tabacum Tobacco |
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