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Detection of differential changes in lignin composition of elm xylem tissues inoculated with Ophiostoma novo‐ulmi using Fourier transform‐infrared spectroscopy
Author(s) -
Martin J. A.,
Solla A.,
Woodward S.,
Gil L.
Publication year - 2007
Publication title -
forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 1437-4781
DOI - 10.1111/j.1439-0329.2007.00495.x
Subject(s) - xylem , ophiostoma , biology , dutch elm disease , lignin , inoculation , botany , ulmaceae , ulmus pumila , horticulture , fungus
Summary Differences in elm susceptibility against Ophiostoma novo‐ulmi have been related with differences in timing and degree of the tree defence responses. In this study, we used Fourier transform‐infrared spectroscopy, coupled with chemometric methods, to detect progressive changes in the metabolic profile of Ulmus minor and U. minor × U. pumila xylem tissues after inoculation with O. novo‐ulmi . Differences between control and inoculated trees were detected at 30 and 60 days post‐inoculation (dpi) in U. minor , and at 15, 30 and 60 dpi in U. minor × U. pumila . These differences were related with increased levels of lignin in the xylem tissues, suggesting an earlier defence response to the infection in the hybrids.