Identification of a bio-signature for barley resistance against Pyrenophora teres infection based on physiological, molecular and sensor-based phenotyping
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Identification of a bio-signature for barley resistance against Pyrenophora teres infection based on physiological, molecular and sensor-based phenotyping. / Pandey, Chandana; Großkinsky, Dominik K.; Westergaard, Jesper Cairo; Jørgensen, Hans J.L.; Svensgaard, Jesper; Christensen, Svend; Schulz, Alexander; Roitsch, Thomas.
In: Plant Science, Vol. 313, 111072, 2021.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Identification of a bio-signature for barley resistance against Pyrenophora teres infection based on physiological, molecular and sensor-based phenotyping
AU - Pandey, Chandana
AU - Großkinsky, Dominik K.
AU - Westergaard, Jesper Cairo
AU - Jørgensen, Hans J.L.
AU - Svensgaard, Jesper
AU - Christensen, Svend
AU - Schulz, Alexander
AU - Roitsch, Thomas
N1 - Publisher Copyright: © 2021
PY - 2021
Y1 - 2021
N2 - Necrotic and chlorotic symptoms induced during Pyrenophora teres infection in barley leaves indicate a compatible interaction that allows the hemi-biotrophic fungus Pyrenophora teres to colonise the host. However, it is unexplored how this fungus affects the physiological responses of resistant and susceptible cultivars during infection. To assess the degree of resistance in four different cultivars, we quantified visible symptoms and fungal DNA and performed expression analyses of genes involved in plant defence and ROS scavenging. To obtain insight into the interaction between fungus and host, we determined the activity of 19 key enzymes of carbohydrate and antioxidant metabolism. The pathogen impact was also phenotyped non-invasively by sensor-based multireflectance and –fluorescence imaging. Symptoms, regulation of stress-related genes and pathogen DNA content distinguished the cultivar Guld as being resistant. Severity of net blotch symptoms was also strongly correlated with the dynamics of enzyme activities already within the first day of infection. In contrast to the resistant cultivar, the three susceptible cultivars showed a higher reflectance over seven spectral bands and higher fluorescence intensities at specific excitation wavelengths. The combination of semi high-throughput physiological and molecular analyses with non-invasive phenotyping enabled the identification of bio-signatures that discriminates the resistant from susceptible cultivars.
AB - Necrotic and chlorotic symptoms induced during Pyrenophora teres infection in barley leaves indicate a compatible interaction that allows the hemi-biotrophic fungus Pyrenophora teres to colonise the host. However, it is unexplored how this fungus affects the physiological responses of resistant and susceptible cultivars during infection. To assess the degree of resistance in four different cultivars, we quantified visible symptoms and fungal DNA and performed expression analyses of genes involved in plant defence and ROS scavenging. To obtain insight into the interaction between fungus and host, we determined the activity of 19 key enzymes of carbohydrate and antioxidant metabolism. The pathogen impact was also phenotyped non-invasively by sensor-based multireflectance and –fluorescence imaging. Symptoms, regulation of stress-related genes and pathogen DNA content distinguished the cultivar Guld as being resistant. Severity of net blotch symptoms was also strongly correlated with the dynamics of enzyme activities already within the first day of infection. In contrast to the resistant cultivar, the three susceptible cultivars showed a higher reflectance over seven spectral bands and higher fluorescence intensities at specific excitation wavelengths. The combination of semi high-throughput physiological and molecular analyses with non-invasive phenotyping enabled the identification of bio-signatures that discriminates the resistant from susceptible cultivars.
KW - Bio-signatures
KW - Crop resistance
KW - Enzyme activity signatures
KW - Expression analysis
KW - Fungal DNA
KW - Multispectral imaging
KW - PhenoLab
KW - Pre-symptomatic
U2 - 10.1016/j.plantsci.2021.111072
DO - 10.1016/j.plantsci.2021.111072
M3 - Journal article
C2 - 34763864
AN - SCOPUS:85116329829
VL - 313
JO - Plant Science
JF - Plant Science
SN - 0168-9452
M1 - 111072
ER -
ID: 284093729