Large effect quantitative trait loci for salicinoid phenolic glycosides in <i>Populus</i>: Implications for gene discovery

Woolbright, Scott A.; Rehill, Brian J.; Lindroth, Richard L.; DiFazio, Stephen P.; Martinsen, Gregory D.; Zinkgraf, Matthew S.; Allan, Gerard J.; Keim, Paul; Whitham, Thomas G.

doi:10.1002/ece3.3932

Cited by 8 publications

(4 citation statements)

References 83 publications

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“…Thus, both these newly identified defence‐related genes are involved in altering gene expression and are regulated by plant hormones. These findings shed important light on the phytochemical pathway responsible for the production of salicinoids, which remains largely unresolved (Boeckler, Gershenzon, & Unsicker, ; Bresadola et al, ; Woolbright et al, ; J. Zhang et al, ).…”

Section: Discussionmentioning

confidence: 98%

Linking plant genes to insect communities: Identifying the genetic bases of plant traits and community composition

et al. 2019

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Community genetics aims to understand the effects of intraspecific genetic variation on community composition and diversity, thereby connecting community ecology with evolutionary biology. Thus far, research has shown that plant genetics can underlie variation in the composition of associated communities (e.g., insects, lichen and endophytes), and those communities can therefore be considered as extended phenotypes. This work, however, has been conducted primarily at the plant genotype level and has not identified the key underlying genes. To address this gap, we used genome‐wide association mapping with a population of 445 aspen (Populus tremuloides) genets to identify the genes governing variation in plant traits (defence chemistry, bud phenology, leaf morphology, growth) and insect community composition. We found 49 significant SNP associations in 13 Populus genes that are correlated with chemical defence compounds and insect community traits. Most notably, we identified an early nodulin‐like protein that was associated with insect community diversity and the abundance of interacting foundation species (ants and aphids). These findings support the concept that particular plant traits are the mechanistic link between plant genes and the composition of associated insect communities. In putting the “genes” into “genes to ecosystems ecology”, this work enhances understanding of the molecular genetic mechanisms that underlie plant–insect associations and the consequences thereof for the structure of ecological communities.

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Section: Discussionmentioning

confidence: 98%

Linking plant genes to insect communities: Identifying the genetic bases of plant traits and community composition

et al. 2019

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“…Using previously collected data for individual tree genotypes in the common garden we examined five different tree traits likely to be under genetic control (nitrogen content, % dry weight condensed tannins and salicortin (plant defensive compounds; [51][52][53]), growth rate constant, and average leaf area). We used standard chemistry analyses for the phytochemical traits (see [50]).…”

Section: Measurements Of Functional Traitsmentioning

confidence: 99%

Assisted migration experiments along a distance/elevation gradient show limits to supporting home site communities

2023

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We addressed the hypothesis that intraspecific genetic variation in plant traits from different sites along a distance/elevation gradient would influence the communities they support when grown at a new site. Answers to this hypothesis are important when considering the community consequences of assisted migration under climate change; i.e., if you build it will they come?. We surveyed arthropod communities occurring on the foundation riparian tree species Populus angustifolia along a distance/elevation gradient and in a common garden where trees from along the gradient were planted 20–22 years earlier. Three major patterns were found: 1) In the wild, arthropod community composition changed significantly. Trees at the lower elevation site supported up to 58% greater arthropod abundance and 26% greater species richness than more distant, high elevation trees. 2) Trees grown in a common garden sourced from the same locations along the gradient, supported arthropod communities more similar to their corresponding wild trees, but the similarity declined with transfer distance and elevation. 3) Of five functional traits examined, leaf area, a trait under genetic control that decreases at higher elevations, is correlated with differences in arthropod species richness and abundance. Our results suggest that genetic differences in functional traits are stronger drivers of arthropod community composition than phenotypic plasticity of plant traits due to environmental factors. We also show that variation in leaf area is maintained and has similar effects at the community level while controlling for environment. These results demonstrate how genetically based traits vary across natural gradients and have community-level effects that are maintained, in part, when they are used in assisted migration. Furthermore, optimal transfer distances for plants suffering from climate change may not be the same as optimal transfer distances for their dependent communities.

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“…The markers used in this study were also obtained from the transcriptome database, and 4.87% segregation distortion (SD) were detected, which was lower than for Castanea sativa (sweet chesnut) [18], Populus spp. (poplar) [30], Juglans regia (walnut) [31], Ziziphus jujuba (jujube) [32] and Citrus clementina (clement pomelo) [33]. Segregation distortion is a common problem in population mapping, and a number of variables could have led to SD [34][35][36][37][38].…”

Section: Ssr Marker and Segregation Distortionmentioning

confidence: 99%

Update of Genetic Linkage Map and QTL Analysis for Growth Traits in Eucommia ulmoides Oliver

Jin

et al. 2020

Forests

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Eucommia ulmoides (Tu-chung) is an economically and ecologically important tree species which has attracted worldwide attention due to its application in pharmacology, landscaping, wind sheltering and sand fixation. Molecular marker technologies can elucidate the genetic mechanism and substantially improve the breeding efficiency of E. ulmoides. The current research updated the original linkage map, and quantitative trait loci (QTL) analysis was performed on tree growth traits measured over 10 consecutive years in an E. ulmoides F1 population (“Xiaoye” × “Qinzhong No.1”). In total, 452 polymorphic markers were scored from 365 simple sequence repeat (SSR) primers, with an average of 1.24 polymorphic markers per primer combination. The integrated map was 1913.29 cM (centimorgan) long, covering 94.10% of the estimated genome and with an average marker density of 2.20 cM. A total of 869 markers were mapped into 19 major independent linkage groups. Growth-related traits measured over 10 consecutive years showed a significant correlation, and 89 hypothetical QTLs were forecasted and divided into 27 distinct loci. Three traits for tree height, ground diameter and crown diameter detected 25 QTLs (13 loci), 32 QTLs (17 loci) and 15 QTLs (10 loci), respectively. Based on BLASTX search results in the NCBI database, six candidate genes were obtained. It is important to explore the growth-related genetic mechanism and lay the foundation for the genetic improvement of E. ulmoides at the molecular level.

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Large effect quantitative trait loci for salicinoid phenolic glycosides in Populus: Implications for gene discovery

Cited by 8 publications

References 83 publications

Linking plant genes to insect communities: Identifying the genetic bases of plant traits and community composition

Linking plant genes to insect communities: Identifying the genetic bases of plant traits and community composition

Assisted migration experiments along a distance/elevation gradient show limits to supporting home site communities

Update of Genetic Linkage Map and QTL Analysis for Growth Traits in Eucommia ulmoides Oliver

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