Occurrence of Aneuploidy Across the Range of Coast Redwood (Sequoia sempervirens) DOI Open Access
Alexandra Sasha Nikolaeva, James S. Santangelo, Lydia L. Smith

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 21, 2024

Aneuploidy, a condition characterized by an abnormal number of chromosomes, can have significant consequences for fitness organism, often manifesting in reduced fertility and other developmental challenges. In plants, aneuploidy is particularly complex to study, especially polyploid species such as coast redwood (Sequoia sempervirens), which hexaploid conifer (2n=6x=66). This study leverages novel Markov Chain Monte Carlo (MCMC) method based on sequence depth investigate the occurrence across range redwood. We show that prevalent second-growth redwoods, predominantly additional while tissue culture plants frequently experience chromosome loss. Although our does not directly assess aneuploids, frequency chromosomal instability observed compared old-growth trees raises questions about their long-term viability potential become established trees. These findings implications conservation restoration strategies, becomes primary mode producing nursery stock used reforestation.

Language: Английский

Occurrence of Aneuploidy Across the Range of Coast Redwood (Sequoia sempervirens) DOI Open Access
Alexandra Sasha Nikolaeva, James S. Santangelo, Lydia L. Smith

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 21, 2024

Aneuploidy, a condition characterized by an abnormal number of chromosomes, can have significant consequences for fitness organism, often manifesting in reduced fertility and other developmental challenges. In plants, aneuploidy is particularly complex to study, especially polyploid species such as coast redwood (Sequoia sempervirens), which hexaploid conifer (2n=6x=66). This study leverages novel Markov Chain Monte Carlo (MCMC) method based on sequence depth investigate the occurrence across range redwood. We show that prevalent second-growth redwoods, predominantly additional while tissue culture plants frequently experience chromosome loss. Although our does not directly assess aneuploids, frequency chromosomal instability observed compared old-growth trees raises questions about their long-term viability potential become established trees. These findings implications conservation restoration strategies, becomes primary mode producing nursery stock used reforestation.

Language: Английский

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