Cutin extraction and composition determined under differing depolymerisation conditions in cork oak leaves

2021 ◽  
Author(s):  
Rita Simões ◽  
Isabel Miranda ◽  
Helena Pereira
Keyword(s):  
Cork Oak ◽  
Oak Leaves

scholarly journals Disclosing proteins in the leaves of cork oak plants associated with the immune response to Phytophthora cinnamomi inoculation in the roots: A long-term proteomics approach

PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245148
Author(s):  
Ana Cristina Coelho ◽  
Rosa Pires ◽  
Gabriela Schütz ◽  
Cátia Santa ◽  
Bruno Manadas ◽  
...  
Keyword(s):  
Immune Response ◽  
Phytophthora Cinnamomi ◽  
Interaction Mechanism ◽  
Heat Shock Protein 90 ◽  
Small Subunit ◽  
Cork Oak ◽  
P Value ◽  
Bisphosphate Carboxylase ◽  
Oak Leaves

The pathological interaction between oak trees and Phytophthora cinnamomi has implications in the cork oak decline observed over the last decades in the Iberian Peninsula. During host colonization, the phytopathogen secretes effector molecules like elicitins to increase disease effectiveness. The objective of this study was to unravel the proteome changes associated with the cork oak immune response triggered by P. cinnamomi inoculation in a long-term assay, through SWATH-MS quantitative proteomics performed in the oak leaves. Using the Arabidopis proteome database as a reference, 424 proteins were confidently quantified in cork oak leaves, of which 80 proteins showed a p-value below 0.05 or a fold-change greater than 2 or less than 0.5 in their levels between inoculated and control samples being considered as altered. The inoculation of cork oak roots with P. cinnamomi increased the levels of proteins associated with protein-DNA complex assembly, lipid oxidation, response to endoplasmic reticulum stress, and pyridine-containing compound metabolic process in the leaves. In opposition, several proteins associated with cellular metabolic compound salvage and monosaccharide catabolic process had significantly decreased abundances. The most significant abundance variations were observed for the Ribulose 1,5-Bisphosphate Carboxylase small subunit (RBCS1A), Heat Shock protein 90–1 (Hsp90-1), Lipoxygenase 2 (LOX2) and Histone superfamily protein H3.3 (A8MRLO/At4G40030) revealing a pertinent role for these proteins in the host-pathogen interaction mechanism. This work represents the first SWATH-MS analysis performed in cork oak plants inoculated with P. cinnamomi and highlights host proteins that have a relevant action in the homeostatic states that emerge from the interaction between the oomycete and the host in the long term and in a distal organ.

scholarly journals Water stress assessment of cork oak leaves and maritime pine needles based on LIF spectra

2012 ◽  
Vol 112 (2) ◽  
pp. 271-279 ◽  
Author(s):  
A. Lavrov ◽  
A. B. Utkin ◽  
J. Marques da Silva ◽  
Rui Vilar ◽  
N. M. Santos ◽  
...  
Keyword(s):  
Water Stress ◽  
Cork Oak ◽  
Pine Needles ◽  
Maritime Pine ◽  
Stress Assessment ◽  
Oak Leaves
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