Influence of halophytic hosts on their parasites-the case of Plicosepalus acaciae

Veste M, Todt H, Breckle S-W (2015)
AoB Plants 7: plu084.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Veste, Maik; Todt, Henning; Breckle, Siegmar-WalterUniBi
Abstract / Bemerkung
Halophytes develop various morphological and physiological traits that enable them to grow successfully on saline substrates. Parasitic plants on halophytic hosts may also encounter salt stress. We investigated the mistletoe Plicosepalus acaciae (syn: Loranthus acacia; Loranthaceae), which occurs on 5 halophytic and at least 10 non-halophytic hosts in the Southern Arava Valley (Israel). Plicosepalus acaciae is a common parasite north of Eilat to the Dead Sea area and in the Jordan Valley. Morphological and physiological responses of P. acaciae to salinity were investigated by comparison of plants on halophytic with those on non-halophytic hosts. Ion patterns of different host-parasite associations were determined as was the development of leaf succulence at different growth stages. The leaf water content of P. acaciae increased and leaves developed succulence when growing on halophytic hosts, especially on Tamarix species, where leaf water content was three times higher than that on non-halophytic hosts and the leaf volume increased four to five times. The reason for increased succulence was a higher ion concentration of, and osmotic adjustment with, Na+ and Cl-. Plicosepalus acaciae showed a high morphological and ecophysiological plasticity, enabling it to cope with salt stress, and can be classified as a facultative eu-halophyte, which increases its halo-succulence according to the host. Host-parasite associations are a model system for the investigation of halophytes under different salt stress conditions.
Stichworte
succulence; salt stress; plasticity; parasite; mistletoe; Ion pattern; Loranthaceae
Erscheinungsjahr
2015
Zeitschriftentitel
AoB Plants
Band
7
Art.-Nr.
plu084
ISSN
2041-2851
Page URI
https://pub.uni-bielefeld.de/record/2731316

Zitieren

Veste M, Todt H, Breckle S-W. Influence of halophytic hosts on their parasites-the case of Plicosepalus acaciae. AoB Plants. 2015;7: plu084.
Veste, M., Todt, H., & Breckle, S. - W. (2015). Influence of halophytic hosts on their parasites-the case of Plicosepalus acaciae. AoB Plants, 7, plu084. doi:10.1093/aobpla/plu084
Veste, M., Todt, H., and Breckle, S. - W. (2015). Influence of halophytic hosts on their parasites-the case of Plicosepalus acaciae. AoB Plants 7:plu084.
Veste, M., Todt, H., & Breckle, S.-W., 2015. Influence of halophytic hosts on their parasites-the case of Plicosepalus acaciae. AoB Plants, 7: plu084.
M. Veste, H. Todt, and S.-W. Breckle, “Influence of halophytic hosts on their parasites-the case of Plicosepalus acaciae”, AoB Plants, vol. 7, 2015, : plu084.
Veste, M., Todt, H., Breckle, S.-W.: Influence of halophytic hosts on their parasites-the case of Plicosepalus acaciae. AoB Plants. 7, : plu084 (2015).
Veste, Maik, Todt, Henning, and Breckle, Siegmar-Walter. “Influence of halophytic hosts on their parasites-the case of Plicosepalus acaciae”. AoB Plants 7 (2015): plu084.

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