XTBG OpenIR  > 2012年后新成立研究组
Neighbourhood defence gene similarity effects on tree performance: a community transcriptomic approach
Zambrano, Jenny; Iida, Yoshiko; Howe, Robert; Lin, Luxiang; et al
Source PublicationJOURNAL OF ECOLOGY
Volume105Issue:3 S1Pages:616-626
Abstract1. The structure and dynamics of ecological communities are ultimately the outcome of the differential demographic rates of individuals. Individual growth and mortality rates largely result from the interaction between an organism's phenotype and the abiotic and biotic environment. Functional traits have been used extensively over the past decade to elucidate links among phenotypes, demography and community dynamics.

2. A fundamental weakness of most functional trait approaches is the use of 'soft' traits associated with resource acquisition to examine how neighbourhood similarity affects tree survival and growth. However, these 'soft' traits are unlikely to be good predictors of similarities among co-occurring species. Less easily measured aspects of organismal function - such as those related to defence have frequently gone unmeasured. This is particularly problematic for testing important hypotheses in forest ecology, such as the Janzen-Connell hypothesis where focal trees are expected to be at a disadvantage if their neighbours share the same natural enemies.

3. A potential alternative to functional trait approaches is to quantify the transcriptomic or functional genomic similarity of species. Such analyses are now possible in natural systems where de novo transciptome assemblies can be used to conduct functional phylogenomic analyses where homologous gene trees are produced. Using demographic plot data for 21 species from a North American forest dynamic plot, we conduct a community functional phylogenomic analysis of a plant community to elucidate the similarity in defence response genes across species. This similarity was then used to ask whether the similarity in defence genes of heterospecific species in the local neighbourhood of a focal individual tree influences its growth and mortality rates.

4. The results show that individual growth rates are higher when surrounded by dissimilar heterospecific species for 16 of 27 defence genes analysed. Additionally, survival rates are increased when an individual is in a neighbourhood with dissimilar species for 4 of the 27 defence genes studied. Lastly, strong conspecific effects were found in all analyses, underscoring that future analyses investigating the genetic variation and differential expression of defence-related genes in neighbourhoods may prove important.

5. Synthesis. In summary, this research leverages recent advances in RNA sequencing and bioinformatics to conduct community-wide transcriptomic analyses and analyses of defence-related gene similarity across a tree community. The results demonstrate that defence gene similarity in neighbourhoods often does have negative effects on individual demographic performance as predicted by the Janzen-Connell hypothesis.
KeywordCommunity Genomics Functional Phylogenomics Janzen-connell Hypothesis Neighbourhood Model r Gene Transcriptome Tree Demography
Indexed BySCI
Document Type期刊论文
Recommended Citation
GB/T 7714
Zambrano, Jenny,Iida, Yoshiko,Howe, Robert,et al. Neighbourhood defence gene similarity effects on tree performance: a community transcriptomic approach[J]. JOURNAL OF ECOLOGY,2017,105(3 S1):616-626.
APA Zambrano, Jenny,Iida, Yoshiko,Howe, Robert,Lin, Luxiang,&et al.(2017).Neighbourhood defence gene similarity effects on tree performance: a community transcriptomic approach.JOURNAL OF ECOLOGY,105(3 S1),616-626.
MLA Zambrano, Jenny,et al."Neighbourhood defence gene similarity effects on tree performance: a community transcriptomic approach".JOURNAL OF ECOLOGY 105.3 S1(2017):616-626.
Files in This Item: Download All
File Name/Size DocType Version Access License
Neighbourhood defenc(474KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zambrano, Jenny]'s Articles
[Iida, Yoshiko]'s Articles
[Howe, Robert]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zambrano, Jenny]'s Articles
[Iida, Yoshiko]'s Articles
[Howe, Robert]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zambrano, Jenny]'s Articles
[Iida, Yoshiko]'s Articles
[Howe, Robert]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Neighbourhood defence gene similarity effects on tree performance_ a community transcriptomic approach.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.