Quercus petraea
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA361225 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR5181460.fastq.gz | Fastqsanger.gz | |||
| SRR5181470.fastq.gz | Fastqsanger.gz | |||
| SRR5181451.fastq.gz | Fastqsanger.gz | |||
| SRR5181461.fastq.gz | Fastqsanger.gz | |||
| SRR5181471.fastq.gz | Fastqsanger.gz |
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Project description:Identification of genes involved in the biosynthesis of aromatic compounds in European white oaks wood.
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Project description:As an adaptive response to the environment, oaks have evolved long taproots that increase their ability to acquire water. Taproots penetrate deeper layers of soil and send out absorptive roots that can then uptake water from these layers. This ability enables taproots to supply trees with water better. Unfortunately, the applied agrotechnical procedures during seedlings production in container nurseries damage the oaks' taproot, leading to changes in the root system structure. That changes may make the seedlings more responsive to chronic or periodic episodes of severe drought. In turn, seedlings that containers do not restrict roots growth, i.e. grown in rhizotron, may elongate because they are not subjected to air-pruning. Despite their significant role, little is known about the internal factors (specific genes) and their interactions that regulate taproot elongation in oaks seedlings. Thus, our study aimed to determine the potential genes regulating growth, cessation and physiology of taproot and check whether there is a difference in the expression level of the genes involved in root development. For this purpose, we performed next-generation sequencing (NGS), taproots and lateral roots, which allowed us to obtain a complete picture of the transcriptomes. Our findings of taproot growth regulations can be used to improve trees production in forest nurseries.
2022-11-23 | GSE181860 | GEO
Project description:Quercus petraea SeqCapBis targeted sequencing
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Project description:Multiple individuals sampled from across all 7 species of the American live oaks, and outgroup samples from the white oaks, red oaks, and golden oaks. Raw sequence reads
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Project description:Quercus petraea (sessile oak) has a scattered distribution in southern and central Italy. The objective of this work was to evaluate the level and distribution of diversity in five Italian populations of Q. petraea by using morphological markers and hypervariable molecular markers such as microsatellites. Forty-eight morphological traits and six nuclear and three plastid loci were scored for each population. Evidence for differentiation in both sets of traits was found, but patterns of differentiation of morphological traits did not coincide with microsatellite differentiation. Morphological variation was correlated with ecological conditions at the site of origin. Analysis of molecular variance revealed significant genetic variation among populations (P < 0.001), both at the nuclear and plastid levels. There was a slight, but significant, correlation between nuclear genetic distance and geographic distance. The relatively high genetic diversity in the populations analysed indicates that the maintenance of their evolutionary potential is possible if population sizes are maintained or increased. Low levels of haplotype diversity found within the small southernmost population (Piano Costantino) indicates that genetic erosion may increase the extinction risk for this population.
| S-EPMC4242358 | biostudies-literature
Project description:Abstract Oak regeneration is jeopardized by purple moor grass, a well-known competitive perennial grass in the temperate forests of Western Europe. Below-ground interactions regarding resource acquisition and interference have been demonstrated and have led to new questions about the negative impact of purple moor grass on ectomycorrhizal colonization. The objective was to examine the effects of moor grass on root system size and ectomycorrhization rate of oak seedlings as well as consequences on nitrogen (N) content in oak and soil. Oak seedlings and moor grass tufts were planted together or separately in pots under semi-controlled conditions (irrigated and natural light) and harvested 1 year after planting. Biomass, N content in shoot and root in oak and moor grass as well as number of lateral roots and ectomycorrhizal rate in oak were measured. Biomass in both oak shoot and root was reduced when planting with moor grass. Concurrently, oak lateral roots number and ectomycorrhization rate decreased, along with a reduction in N content in mixed-grown oak. An interference mechanism of moor grass is affecting oak seedlings performance through reduction in oak lateral roots number and its ectomycorrhization, observed in conjunction with a lower growth and N content in oak. By altering both oak roots and mycorrhizas, moor grass appears to be a species with a high allelopathic potential. More broadly, these results show the complexity of interspecific interactions that involve various ecological processes involving the soil microbial community and need to be explored in situ. Interactions between plants can involve a wide variety of mechanisms. Oak regeneration failure in the presence of moor grass in European temperate forests demonstrated not only competition by exploitation but also interference and even facilitation, allowing the discovery of an antagonistic interaction. In this paper, we highlight a new target of the oak–moor grass interaction: oak ectomycorrhizae. We show that in the presence of moor grass, young oaks have a lower: (i) total biomass, (ii) number of lateral roots, (iii) ectomycorrhization rate and at the same time (iv) a lower nitrogen content than oaks placed without moor grass.
| S-EPMC9893876 | biostudies-literature