Boron deficiency causes accumulation of chlorogenic acid and caffeoyl polyamine conjugates in tobacco leaves.
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.
Departamento de Ciencias Ambientales, Facultad de Ciencias Experimentales, Universidad Pablo de Olavide, Sevilla, Spain.
Juan J
JJ
Camacho-Cristóbal
Loreto
L
Lunar
Fernando
F
Lafont
Alfred
A
Baumert
Agustín
A
González-Fontes
D001895:Boron / Q000172:deficiency* / Q000494:pharmacology; D002109:Caffeic Acids / Q000378:metabolism*; D050260:Carbohydrate Metabolism; D002726:Chlorogenic Acid / Q000378:metabolism*; D005632:Fructose / Q000378:metabolism; D005947:Glucose / Q000378:metabolism; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism*; D011073:Polyamines / Q000378:metabolism*; D011700:Putrescine / Q000378:metabolism; D013095:Spermidine / Q000378:metabolism; D013213:Starch / Q000378:metabolism; D014026:Nicotiana / Q000187:drug effects / Q000378:metabolism*
D002109:Caffeic Acids; D011073:Polyamines; D005632:Fructose; D002726:Chlorogenic Acid; D013213:Starch; D005947:Glucose; D001895:Boron; C040048:caffeic acid; D013095:Spermidine; D011700:Putrescine