Community-wide consequences of variation in photoprotective physiology among prairie plants

Title:

Community-wide consequences of variation in photoprotective physiology among prairie plants

Creator:

Kothari, S., Cavender-Bares, J., Bitan, K., Verhoeven, A. S., Wang, R., Montgomery, R. A., and Gamon, J. A.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:78fe89a8-06d9-454c-9fdd-2d05336d87d9
uuid:78fe89a8-06d9-454c-9fdd-2d05336d87d9
issn:0300-3604
doi:10.1007/s11099-018-0777-9

Subject:

fenologie, phenology, drought, light-use efficiency, photoinhibition, trait covariance, water-use efficiency, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Photoprotective pigments, like those involved in the xanthophyll cycle, help plants avoid oxidative damage caused by excess radiation. This study aims to characterize a spectrum of strategies used to cope with light stress by a diverse group of prairie plants at Cedar Creek Ecosystem Science Reserve (East Bethel, MN). We find that concentrations of photosynthetic and photoprotective pigments are highly correlated with one another and with other physiological traits across species and over time, and tend to be phylogenetically conserved. During a period of water limitation, plots dominated by species with constitutively low pigment concentrations showed a greater decline in mean reflectance and photochemical reflectance index, a reflectance-based indicator of photoprotective physiology, possibly due to alterations in canopy structure. Our findings suggest two contrasting strategies for withstanding light stress: (1) Using photoprotective pigments to dissipate excess energy, and (2) altering canopy structure to minimize absorbance of excess radiation., S. Kothari, J. Cavender-Bares, K. Bitan, A. S. Verhoeven, R. Wang, R. A. Montgomery, J. A. Gamon., and Obsahuje bibliografické odkazy

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

455-467

Source:

Photosynthetica | 2018 Volume:56 | Number:1

Harvested from:

CDK

Metadata only:

false