Abstract Detail



Ecology

Meek, Haley [1], Michaels, Helen [2].

Seed Coat Pigment Variation and UV Stress Tolerance in Lupinus perennis..

Lupinus perennis is a perennial, herbaceous plant whose Ohio populations are polymorphic for seed coat color thought to be the result of the relative amounts of anthocyanin pigments, which have been associated with UV stress tolerance, present in the seed coat. This study aimed to classify seed coat phenotypes and assess the UV stress tolerances of phenotypes based on the hypothesis that phenotypes with higher anthocyanin levels have better UV stress tolerance than phenotypes with lower anthocyanin levels. Seeds were collected from 20 wild plants and imaged, then image analysis software and chemical analysis were used to determine seed color phenotypes. Seedlings grown from each seed phenotype were subjected to UV absence or presence treatments in order to determine UV stress tolerance. Based on image and chemical analyses, two main phenotypes were determined to be prevalent in the sampled population: “white” seeds with 0-5% pigmentation and “dark” seeds with 40-65% pigmentation. Differences in seedling growth characteristics were observed between seed phenotypes when exposed to UV stress. It is evident in this study that distinct seed color phenotypes exist in Ohio L. perennis populations based on the amount of anthocyanin pigments present in the seed coat and that these phenotypes have differences in UV stress tolerance.


1 - Bowling Green State University, Biological Sciences, 331 Life Sciences Building, Bowling Green State University, Bowling Green, OH, 43402, USA
2 - Bowling Green State University, Department of Biological Sciences, 217 Life Sciences Building, Bowling Green, OH, 43403, USA

Keywords:
Lupine
Stress
UV
Phenotype
Seed Color
Anthocyanin.

Presentation Type: Poster
Number: PEC007
Abstract ID:205
Candidate for Awards:Ecological Section Best Graduate Student Poster


Copyright © 2000-2018, Botanical Society of America. All rights reserved