Articles:
Improving plant stress tolerance and yield production: is the tonoplast aquaporin SlTIP2;2 a key to isohydric to anisohydric conversion?
Nir Sade, Basia J. Vinocur, Alex Diber, Arava Shatil, Gil Ronen, Hagit Nissan, Rony Wallach, Hagai Karchi and Menachem Moshelion. (2008)
New Phytologist, doi: 10.1111/j.1469-8137.2008.02689.x
Plants with high transpiration levels (anisohydric plants) are thought to be more drought tolerant than plants with low transpiration levels (isohydric plants). The study proposed that a regulation mechanism controlling tonoplast water permeability might have a role in determining the whole-plant transpiration threshold, and thus plant abiotic stress tolerance. Using computational mining - a key tonoplast aquaporin, tonoplast intrinsic protein 2;2 (SlTIP2;2), was selected within the large multifunctional gene family of tomato (Solanum lycopersicum) aquaporins based on its induction in response to abiotic stresses. SlTIP2;2-transformed plants showed not only increased cell osmotic water permeability, but also enhanced whole-plant transpiration rates. In three year consecutive commercial greenhouse trials, transgenic SlTIP2;2 tomato plants showed significant increases in fruit yield, harvest index and plant biomass relative to the control under both under normal and water-stress conditions.
Article, New Phytologist, January 2009
The definitive version is available at http://www.blackwell-synergy.com/loi/nph
Suppression of Arabidopsis vesicle-SNARE expression inhibited fusion of H2O2-containing vesicles with tonoplast and increased salt tolerance.
Yehoram Leshem, Naomi Melamed-Book, Olivier Cagnac, Gil Ronen, Yossi Nishri, Mazal Solomon,Gil Cohen, Alex Levine.(2006)
PNAS, 103:18008-18013
The increase of plant salt tolerance gained by silencing a gene, AtVamp7c, involved in trafficking of biological compounds within the plant cell is described. Evogene, jointly with the lab of Dr. Alex Levine from The Hebrew University of Jerusalem, have studied the involvement of central intracellular trafficking genes in abiotic stress. The lab of Dr. Levine have further studied the plants developed during the collaboration, and revealed the nature of the plant salt tolerance gained by silencing the Atvamp7c gene.
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