Water deficit conditions trigger the production of a chemical signal, the phytohormone abscisic acid (ABA), which coordinates multiple responses at different temporal and spatial scales. Despite the complexity of natural drought conditions, the modulation of ABA signaling could be harnessed to ameliorate the drought performances of crops in the face of increasingly challenging climate conditions. Based on recent studies, increasing ABA sensitivity can lead to genotypes with improved drought resistance traits, with sustained biomass production in water-limiting environments and little or no costs with respect to biomass production under optimal conditions. However, variations in ABA production and sensitivity lead to changes in various aspects of reproductive development, including flowering time. Here we provide an updated summary of the literature on ABA-related genes in tomato and discuss how their manipulation can impact water-deficit-related responses and/or other developmental traits. We suggest that a better understanding of specific ABA components’ function or their expression may offer novel tools to specifically engineer drought resistance without affecting developmental traits.

How Changes in ABA Accumulation and Signaling Influence Tomato Drought Responses and Reproductive Development / P. KORWIN KRUKOWSKI, S. Colanero, A. Sutti, D. Martignago, L. Conti. - In: INTERNATIONAL JOURNAL OF PLANT BIOLOGY. - ISSN 2037-0164. - 14:1(2023 Jan 21), pp. 162-176. [10.3390/ijpb14010014]

How Changes in ABA Accumulation and Signaling Influence Tomato Drought Responses and Reproductive Development

P. KORWIN KRUKOWSKI
Primo
;
S. Colanero
Secondo
;
D. Martignago
Penultimo
;
L. Conti
Ultimo
2023

Abstract

Water deficit conditions trigger the production of a chemical signal, the phytohormone abscisic acid (ABA), which coordinates multiple responses at different temporal and spatial scales. Despite the complexity of natural drought conditions, the modulation of ABA signaling could be harnessed to ameliorate the drought performances of crops in the face of increasingly challenging climate conditions. Based on recent studies, increasing ABA sensitivity can lead to genotypes with improved drought resistance traits, with sustained biomass production in water-limiting environments and little or no costs with respect to biomass production under optimal conditions. However, variations in ABA production and sensitivity lead to changes in various aspects of reproductive development, including flowering time. Here we provide an updated summary of the literature on ABA-related genes in tomato and discuss how their manipulation can impact water-deficit-related responses and/or other developmental traits. We suggest that a better understanding of specific ABA components’ function or their expression may offer novel tools to specifically engineer drought resistance without affecting developmental traits.
Solanum lycopersicum; tomato; abscisic acid; ABA; drought stress; reproductive development; ABA biosynthesis; ABA signaling;
Settore BIO/18 - Genetica
   An integrative approach to decipher flowering time dynamics under drought stress
   HUMAN FRONTIER SCIENCE PROGRAM - HFSP
   RGP0011/2019
21-gen-2023
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/951772
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