Campus Units

Ecology, Evolution and Organismal Biology

Document Type

Article

Publication Version

Published Version

Publication Date

2016

Journal or Book Title

AoB Plants

Volume

9

Issue

1

First Page

plw082

DOI

10.1093/aobpla/plw082

Abstract

Nucleotypic effects are phenotypic changes related to the total nuclear DNA amount per cell. These effects are commonly observed among and within genera for certain cell types, and the generality of the positive correlation between genome size and cell size has been well established. However, there are few studies of nucleotypic effects which incorporate into the analysis both ploidy level and genome size (given as Mbp determined by 2C values). To test the hypothesis that cell size scales with genome size and ploidy, we measured the guard cell length, epidermal pavement cell surface area, and pollen grain diameter using individuals of multiple species and accessions of the cotton genus (Gossypium), in which different species exhibit three-fold variation in genome size. We measured cell sizes using calibrated microscopic image analysis. Significant relationships were found between genome size and cell size, with stronger correlations between guard cell length and genome size than with epidermal pavement cell surface area. We also found a relationship between pollen grain diameter and genome size. These results indicate that nucleotypic effects occur within Gossypium, scale with ploidy level, and are stronger in less variable cell types.

Comments

This article is published as Snodgrass, S. J., J. Jareczek, and J. F. Wendel. "An examination of nucleotypic effects in diploid and polyploid cotton." AoB Plants 9, no. 1 (2016): plw082. 10.1093/aobpla/plw082. Posted with permission.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

The Author(s)

Language

en

File Format

application/pdf

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