A footprint of desiccation tolerance in the genome of Xerophyta viscosa
Description
Desiccation tolerance is common in seeds and various other organisms but only a few Angiosperm species possess vegetative desiccation tolerance. These ‘resurrection species’ may serve as ideal models for the ultimate design of crops with enhanced drought tolerance. To understand the molecular and genetic mechanisms enabling vegetative desiccation tolerance we produced a high-quality whole-genome sequence for the resurrection plant Xerophyta viscosa and assessed transcriptome changes during its dehydration. Data revealed induction of transcripts typically associated with desiccation tolerance in seeds, and involvement of orthologues of ABI3 and ABI5, both key regulators of seed maturation. Dehydration resulted in both increased, but predominantly reduced transcript abundance of genomic ‘clusters of desiccation-associated genes’ (CoDAGs), reflecting the cessation of growth that allows for the expression of desiccation tolerance. Vegetative desiccation tolerance in X. viscosa was found to be uncoupled from drought-induced senescence. We provide strong support for the hypothesis that vegetative desiccation tolerance arose by redirection of genetic information from desiccation tolerant seeds.
Impact and interest:
Citation counts are sourced monthly from Scopus and Web of Science® citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.
Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.
ID Code: | 103764 | ||
---|---|---|---|
Item Type: | Contribution to Journal (Journal Article) | ||
Refereed: | Yes | ||
ORCID iD: |
|
||
Measurements or Duration: | 10 pages | ||
Keywords: | Autophagy, Desiccation Tolerance, Genome, Resurrection Plant, Senescence | ||
DOI: | 10.1038/nplants.2017.38 | ||
ISSN: | 2055-0278 | ||
Pure ID: | 33202194 | ||
Divisions: | Past > Institutes > Institute for Future Environments Past > QUT Faculties & Divisions > Science & Engineering Faculty Current > Research Centres > Centre for Tropical Crops and Biocommodities |
||
Copyright Owner: | Consult author(s) regarding copyright matters | ||
Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au | ||
Deposited On: | 21 Feb 2017 23:30 | ||
Last Modified: | 08 Aug 2024 08:05 |
Export: EndNote | Dublin Core | BibTeX
Repository Staff Only: item control page