On the Relationship between Pollen Size and Genome Size
Joint Authors
Clancy, Rachel B.
Dann, Leighton
Knight, Charles A.
Beaulieu, Jeremy M.
Götzenberger, Lars
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-06-09
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Here we test whether genome size is a predictor of pollen size.
If it were, inferences of ancient genome size would be possible using the abundant paleo-palynolgical record.
We performed regression analyses across 464 species of pollen width and genome size.
We found a significant positive trend.
However, regression analysis using phylogentically independent contrasts did not support the correlated evolution of these traits.
Instead, a large split between angiosperms and gymnosperms for both pollen width and genome size was revealed.
Sister taxa were not more likely to show a positive contrast when compared to deeper nodes.
However, significantly more congeneric species had a positive trend than expected by chance.
These results may reflect the strong selection pressure for pollen to be small.
Also, because pollen grains are not metabolically active when measured, their biology is different than other cells which have been shown to be strongly related to genome size, such as guard cells.
Our findings contrast with previously published research.
It was our hope that pollen size could be used as a proxy for inferring the genome size of ancient species.
However, our results suggest pollen is not a good candidate for such endeavors.
American Psychological Association (APA)
Knight, Charles A.& Clancy, Rachel B.& Götzenberger, Lars& Dann, Leighton& Beaulieu, Jeremy M.. 2010. On the Relationship between Pollen Size and Genome Size. Journal of Botany،Vol. 2010, no. 2010, pp.1-7.
https://search.emarefa.net/detail/BIM-485013
Modern Language Association (MLA)
Knight, Charles A.…[et al.]. On the Relationship between Pollen Size and Genome Size. Journal of Botany No. 2010 (2010), pp.1-7.
https://search.emarefa.net/detail/BIM-485013
American Medical Association (AMA)
Knight, Charles A.& Clancy, Rachel B.& Götzenberger, Lars& Dann, Leighton& Beaulieu, Jeremy M.. On the Relationship between Pollen Size and Genome Size. Journal of Botany. 2010. Vol. 2010, no. 2010, pp.1-7.
https://search.emarefa.net/detail/BIM-485013
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-485013