Project description:The pinewood nematode, Bursaphelenchus xylophilus, the pine wilt disease's causal agent, is a migratory endoparasitic nematode skilled to feed on pine tissues and on fungi that colonize the trees. In order to study B. xylophilus secretomes under the stimulus of pine species with different susceptibility to disease, nematodes were exposed to aqueous pine extracts from Pinus pinaster (high susceptible host) and P. pinea (low susceptible host). Sequential windowed acquisition of all theoretical mass spectra (SWATH-MS) was used to determine relative changes in protein amounts between B. xylophilus secretions, and a total of 776 secreted proteins were quantified in both secretomes.
Project description:This study compared the different gene expression of Bursaphelenchus xylophilus in two growth conditions (growing on Botrytis cinerea and inoculating Pinus thunbergii). The goal was to analyze the specifically-expressed genes of the pine wood nematode involved in the early interaction between B. xylophilus and P. thunbergii and screen the pathogenesis related genes of B. xylophilus. Two-condition experiment, Growing on Botrytis cinerea vs. Inoculating Pinus thunbergii . Biological replicates: 3 replicates.
Project description:This study compared the different gene expression of Bursaphelenchus xylophilus in two growth conditions (growing on Botrytis cinerea and inoculating Pinus thunbergii). The goal was to analyze the specifically-expressed genes of the pine wood nematode involved in the early interaction between B. xylophilus and P. thunbergii and screen the pathogenesis related genes of B. xylophilus.
Project description:We sequenced mRNA from the insect-resistant and poor insect resistance Pinus massoniana to discover metabolic pathways and genes that are involved in defense against pests. Examination of mRNA levels in strain insect-resistant and poor insect resistance Pinus massoniana
Project description:There is an increasing interest in understanding the role of epigenetic variability in forest species and how it may contribute to their rapid adaptation to changing environments. In this study we have conducted a genome-wide analysis of cytosine methylation pattern in Pinus pinea, a species characterized by very low levels of genetic variation and a remarkable degree of phenotypic plasticity. DNA methylation profiles of different vegetatively propagated trees from representative natural Spanish populations of P. pinea were analyzed with the Methylation Sensitive Amplified Polymorphism (MSAP) technique. A high degree of cytosine methylation was detected (64.36% of all scored DNA fragments). Furthermore, high levels of epigenetic variation were observed among the studied individuals. This high epigenetic variation found in P. pinea contrasted with the lack of genetic variation based on Amplified Fragment Length Polymorphism (AFLP) data. In this manner, variable epigenetic markers clearly discriminate individuals and differentiates two well represented populations while the lack of genetic variation revealed with the AFLP markers fail to differentiate at both, individual or population levels. In addition, the use of different replicated trees allowed identifying common polymorphic methylation sensitive MSAP markers among replicates of a given propagated tree. This set of MSAPs allowed discrimination of the 70% of the analyzed trees.