RT Journal Article
T1 Changes in soluble and cell wall-bound hydroxycinnamic and hydroxybenzoic acids in sugarcane cultivars inoculated with Sporisorium scitamineum sporidia
A1 Santiago, Rocío
A1 Armas, Roberto de
A1 Fontaniella López, Blanca
A1 Vicente Córdoba, Carlos
A1 Legaz González, María Estrella
AB The accumulation of soluble and cell wall-bound phenolics in the sugarcane stems of young plants from highly resistant cv. My 5514 and susceptible cv. B 42231, inoculated or not inoculated with smut sporidia, was studied. The ratio of inoculated to uninoculated plants of some cell wall-bound phenolics, such as ferulic, caffeic, and syringic acids increased for the resistant cv. My 5514, whereas it was maintained more or less constantly for the susceptible cv. B 42231. The highest increase of this ratio in the resistant cv. My 5514 corresponded to both caffeic and syringic acids. This could result in a better capacity to cv. My 5514 for an increase in the frequency of bridges between lignin fragments through ester-ether linkages for reinforcing the cell wall and major resistance to the disease. This reinforcement of the cell wall could provide an effective barrier to pathogen entry and spread. Soluble sub-fractions of all phenolics detected showed non-stable patterns. Caffeic acid, that regulates phenylalanine ammonia-lyase activity in sugarcane, showed a significant decrease in its titre at 24 h in the resistant cultivar, principally in the free soluble fraction, whilst the susceptible cultivar enhanced it. We hypothesise that the pathway of hydroxybenzoic acids is only activated once the level of p-coumaric acid justifies the accumulation of hydroxycinnamic acids required for reinforcing the cell wall after inoculation.
PB Springer Nature
SN 0929-1873
YR 2009
FD 2009
LK https://hdl.handle.net/20.500.14352/108290
UL https://hdl.handle.net/20.500.14352/108290
LA eng
NO Santiago, Rocío, et al. «Changes in Soluble and Cell Wall-Bound Hydroxycinnamic and Hydroxybenzoic Acids in Sugarcane Cultivars Inoculated with Sporisorium Scitamineum Sporidia». European Journal of Plant Pathology, vol. 124, n.o 3, julio de 2009, pp. 439-50. DOI.org (Crossref), https://doi.org/10.1007/s10658-009-9431-5.
NO Agencia Española de Cooperación con Iberoamérica
NO Ministerio de Educación y Ciencia (España)
DS Docta Complutense
RD 7 abr 2025