Cover Image

Abstract

The cover image is based on the Research Article Shedding Light into the Health‐beneficial Properties of Corema album – A Vibrational Spectroscopy Study by Daniel Martin et al., https://doi.org/10.1002/jrs.5775.

Unravelling pine response to Fusarium circinatum through Raman spectroscopy

“…However, from 3 dpi onwards, it is perceptible that another spectral contribution has arisen as responsible for the separation between the inoculated samples of the pine species studied: the antisymmetric and symmetric ν (COC) glycosidic modes (at 1102 and at 1133 cm À1 , respectively) assigned to cellulose, heteromannans, and heteroxylans. Even though the 1036 cm À1 [45] Higher in inoculated samples 1092 ---1105 ------ν (COC) as glycosidic Cellulose, heteromannans, heteroxylans 1096 cm À1 [40,46] Higher in control samples 1120 ---1131 ------ν (COC) sym glycosidic Cellulose, heteromannans, heteroxylans 1122 cm À1 [40,46,51] 1223 cm À1 [47] 1214 cm À1 [52] Higher in inoculated samples ---1266 1253 1250 ---C ar -O stretching Phenolics (lignin H units) 1256 cm À1 [52] Higher in inoculated samples 1286 ------------ring deformation and ip COH bending Phenolics (lignin G units) 1288 cm À1 [45] Higher in inoculated samples ------1351 1349 ---δ (CH 2 ) n/a 1348 cm À1 [53] Higher in control samples ------1393 ------Phenolic O-H bend + CH 3 bend Phenolics (lignin) 1393 cm À1 [47,54] Higher in control samples ------1413 1416 ---CH 2 bending Cellulose, heteromannans, heteroxylans 1413 cm À1 [52] Higher in control samples ------1431 ------CH 3 bend + ring stretching Phenolics (lignin) 1430 cm À1 [47] Higher in control samples ------1485 ---1480 δ (CH 2 ), δ (CH 3 ) n/a 1482 cm À1 [55] Higher in control samples ---1509 ---------Aromatic ring stretch, asymmetric Phenolics (lignin) 1508 cm À1 [47,49] Higher in inoculated samples ---1536 ---------ν(C=C) n/a 1531 cm À1 [56] Higher in control samples ------1580 1570 1582 Aromatic ring mode Phenolics (lignin, syringaldehyde) 1583 cm À1 [57] 1586 cm À1 [58] Higher in inoculated samples 1609 ------------ν sym (aromatic ring) sym Phenolics (lignin) 1600 cm À1 [41,42,47,49] Higher in inoculated samples main constitutive spectral contributions (spectral shift of the aromatic ring symmetric stretch from lignin) remain over the 21 dpi, the variance analysis captured on the PC1 loading over this timeline demonstrates the increasing importance of the ν (COC) glycosidic vibration for the species differentiation regarding their response to F. circinatum. The higher control/inoculated ratio o...…”