Specific leaf area variations drive acclimation of Cistus salvifolius in different light environments

Title:

Specific leaf area variations drive acclimation of Cistus salvifolius in different light environments

Creator:

Puglielli, G., Varone, L., Gratani, L., and Catoni, R.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:47c37b84-8062-49b0-b3f4-36a7c148e1fb
uuid:47c37b84-8062-49b0-b3f4-36a7c148e1fb
issn:0300-3604
doi:10.1007/s11099-016-0235-5

Subject:

karotenoidy, carotenoids, aklimatizace, acclimatization, fluorescence chlorofylu, výměna plynu, absorptance listu, Cistus salvifolius, list, chlorophyll fluorescence, gas exchange, leaf absorptance, leaf nitrogen partitioning, leaf, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Cistus salvifolius L. is the most widely spread Cistus species around the Mediterranean basin. It colonizes a wide range of habitats growing from sea level to 1,800 m a.s.l., on silicolous and calcicolous soils, in sun areas as well as in the understory of wooded areas. Nevertheless, this species has been mainly investigated in term of its responsiveness to drought. Our aim was to understand which leaf traits allow C. salvifolius to cope with low-light environments. We questioned if biochemical and physiological leaf trait variations in response to a reduced photosynthetic photon flux density were related to leaf morphological plasticity, expressed by variations of specific leaf area (SLA) and its anatomical components (leaf tissue density and thickness). C. salvifolius shrubs growing along the Latium coast (41°43'N,12°18'E, 14 m a.s.l., Italy) in the open and in the understory of a Pinus pinea forest, were selected and the relationships between anatomical, gas exchange, chlorophyll (Chl) fluorescence, and biochemical parameters with SLA and PPFD variations were tested. The obtained results suggested long-term acclimation of the selected shrubs to contrasting light environments. In high-light conditions, leaf nitrogen and Chl contents per leaf area unit, leaf thickness, and Chl a/b ratio increased, thus maximizing net photosynthesis, while in shade photosynthesis, it was downregulated by a significant reduction in the electron transport rate. Nevertheless, the increased pigment-protein complexes and the decreased Chl a/b in shade drove to an increased light-harvesting capacity (i.e. higher actual quantum efficiency of PSII). Moreover, the measured vitality index highlighted the photosynthetic acclimation of C. salvifolius to contrasting light environments. Overall, our results demonstrated the morphological, anatomical, and physiological acclimation of C. salvifolius to a reduced light environment., G. Puglielli, L. Varone, L. Gratani, R. Catoni., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

31-40

Source:

Photosynthetica | 2017 Volume:55 | Number:1

Harvested from:

CDK

Metadata only:

false