Defective pollen tube tip growth induces neo-polyploid infertility
OPEN ACCESS
Author / Producer
Date
2024-03-01
Publication Type
Journal Article
ETH Bibliography
yes
Citations
Altmetric
OPEN ACCESS
Data
Rights / License
Abstract
Genome duplication (generating polyploids) is an engine of novelty in eukaryotic evolution and a promising crop improvement tool. Yet newly formed polyploids often have low fertility. Here we report that a severe fertility-compromising defect in pollen tube tip growth arises in new polyploids of Arabidopsis arenosa. Pollen tubes of newly polyploid A. arenosa grow slowly, have aberrant anatomy and disrupted physiology, often burst prematurely, and have altered gene expression. These phenotypes recover in evolved polyploids. We also show that gametophytic (pollen tube) genotypes of two tip-growth genes under selection in natural tetraploid A. arenosa are strongly associated with pollen tube performance in the tetraploid. Our work establishes pollen tube tip growth as an important fertility challenge for neo-polyploid plants and provides insights into a naturally evolved multigenic solution.
Permanent link
Publication status
published
External links
Editor
Book title
Journal / series
Volume
383 (6686)
Pages / Article No.
Publisher
AAAS
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Organisational unit
09665 - Bomblies, Kirsten / Bomblies, Kirsten
Notes
Funding
192671 - Temperature and its links to recombination rate in Arabidopsis arenosa (SNF)
217182 - Polyploidy-associated Chromatin organisation in Somatic and Meiotic tissues (PolyChromoSoMe) (SNF)
101029732 - Promoting Synthetic Polyploid Engineering Commencing Technology (EC)
217182 - Polyploidy-associated Chromatin organisation in Somatic and Meiotic tissues (PolyChromoSoMe) (SNF)
101029732 - Promoting Synthetic Polyploid Engineering Commencing Technology (EC)