Drought tolerance in the Mediterranean species Quercus coccifera, Quercus ilex, Pinus halepensis, and Juniperus phoenicea

Title:

Drought tolerance in the Mediterranean species Quercus coccifera, Quercus ilex, Pinus halepensis, and Juniperus phoenicea

Creator:

Baquedano, F. J. and Castillo, F. J.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:53f72f2f-95f4-4506-afbe-d7bcf2031df7
uuid:53f72f2f-95f4-4506-afbe-d7bcf2031df7
issn:0300-3604
doi:10.1007/s11099-007-0037-x

Subject:

carotenoids, chlorophyll fluorescence, field conditions, net photosynthetic rate, photosystem 2, precipitation, quantum yield, stomatal conductance, transpiration, and water potential

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

We investigated the strategies of four co-occurring evergreen woody species Quercus ilex, Quercus coccifera, Pinus halepensis, and Juniperus phoenicea to cope with Mediterranean field conditions. For that purpose, stem water potential, gas exchange, chlorophyll (Chl) fluorescence, and Chl and carotenoid (Car) contents were examined. We recognized two stress periods along the year, winter with low precipitation and low temperatures that led to chronic photoinhibition, and summer, when drought coincided with high radiation, leading to an increase of dynamic photoinhibition and a decrease of pigment content. Summer photoprotection was related to non-photochemical energy dissipation, electron flow to alternative sinks other than photosynthesis, decrease of Chl content, and proportional increase of Car content. Water potential of trees with deep vertical roots (Q. coccifera, Q. ilex, and P. halepensis) mainly depended on precipitation, whereas water potential of trees with shallow roots (J. phoenicea) depended not only on precipitation but also on ambient temperature. and F. J. Baquedano, F. J. Castillo.

Language:

Multiple languages

Rights:

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

Coverage:

229-238

Source:

Photosynthetica | 2007 Volume:45 | Number:2

Harvested from:

CDK

Metadata only:

false