Elevated Atmospheric Carbon Dioxide and Ozone Concentrations Alter Leaf Area Index Through Changes in Leaf Production and Expansion

This research has shown that although elevated [CO2] increased LAI in aspen and soybean, the mechanisms for the change differed between the species. Leaf number was increased by elevated [CO2] in aspen, whereas individual leaf size was increased in soybean. Aspen and soybean had similar responses to elevated [O3]. Most previous research has ignored the potential effects of O3 on young leaves and leaf growth; however, this research showed that elevated [O3] altered growth properties of young soybean leaves and had indirect, lasting effects on leaf growth and function in aspen. While there was evidence that elevated [CO 2] protects from elevated [O3], there were also notable exceptions, indicating that elevated [CO2] will not always cancel the negative effects of elevated [O3] on leaf growth and canopy structure.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Plant Biology

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• McGrath, Justin M.

Contributors dc:contributor

• Elizabeth Ainsworth

• Biology, Plant Physiology

Language dc:language

eng

Identifier

(MiAaPQ)AAI3392214

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/87060