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Titre du document / Document title

The ice plant cometh: Lessons in abiotic stress tolerance : Emerging model systems on plant biology

Auteur(s) / Author(s)

BOHNERT Hans J. (1) ; CUSHMAN John C. (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Biochemistry, The University of Arizona, Tucson, Arizona 85721-0088, ETATS-UNIS
(2) Department of Biochemistry, University of Nevada at Reno, Reno, Nevada 89557-0014, ETATS-UNIS

Résumé / Abstract

Mesembryanthemum crystallinum, the common ice plant, provides a model for the developmentally and environmentally inducible shift from C3 photosynthesis to Crassulacean acid metabolism. Study of its halophytic (salt tolerant) nature has also yielded crucial insights into abiotic stress biology. In addition, the ice plant serves as an anchor species for genomic studies in the order Caryophyllales in which very few species have been studied at the molecular genetic level. Large-scale expressed sequence tag projects allow comparisons of gene expression in different tissues, organs, and developmental states in stressed and unstressed plants during the life cycle. Microarray analyses pinpoint transcripts affected by abiotic stresses to functionally characterize the essential elements that constitute natural abiotic stress tolerance. Mesembryanthemum features advantages of a small genome, an emerging transformation system, a growing mutant collection, and the potential for bioremediation of salinized soil because of its ability to efficiently sequester salts into vegetative tissues. Disadvantages are the plant's potentially large size at flowering, a 4-month life cycle under growth chamber conditions, and extreme response plasticity to minute perturbations in the environment.

Revue / Journal Title

Journal of plant growth regulation    ISSN  0721-7595   CODEN JPGRDI 

Source / Source

2000, vol. 19, no3, pp. 334-346 (2 p.1/4)

Langue / Language

Anglais

Editeur / Publisher

Springer, New York, NY, ETATS-UNIS  (1982) (Revue)

Mots-clés anglais / English Keywords

Stress

;

Tolerance

;

Photosynthesis

;

C3-Type

;

CAM-Type

;

Physiology

;

Ecology

;

Genetics

;

Review

;

Mesembryanthemum crystallinum

;

Aizoaceae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Biological model

;

Halophyte

;

Mots-clés français / French Keywords

Stress

;

Tolérance

;

Photosynthèse

;

Type C3

;

Type CAM

;

Physiologie

;

Ecologie

;

Génétique

;

Article synthèse

;

Mesembryanthemum crystallinum

;

Aizoaceae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Modèle biologique

;

Halophyte

;

Mots-clés espagnols / Spanish Keywords

Stress

;

Tolerancia

;

Fotosíntesis

;

Tipo C3

;

Tipo CAM

;

Fisiología

;

Ecología

;

Genética

;

Artículo síntesis

;

Mesembryanthemum crystallinum

;

Aizoaceae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Modelo biológico

;

Halofito

;

Localisation / Location

INIST-CNRS, Cote INIST : 19223, 35400009530669.0100

Nº notice refdoc (ud4) : 997248



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