The Potential of the MAGIC TOM Parental Accessions to Explore the Genetic Variability in Tomato Acclimation to Repeated Cycles of Water Deficit and Recovery

Frontiers in Plant Science
Julie RipollNadia Bertin

Abstract

Episodes of water deficit (WD) during the crop cycle of tomato may negatively impact plant growth and fruit yield, but they may also improve fruit quality. Moreover, a moderate WD may induce a plant "memory effect" which is known to stimulate plant acclimation and defenses for upcoming stress episodes. The objective of this study was to analyze the positive and negative impacts of repeated episodes of WD at the plant and fruit levels. Three episodes of WD (-38, -45, and -55% of water supply) followed by three periods of recovery ("WD treatments"), were applied to the eight parents of the Multi-Parent Advanced Generation Inter-Cross population which offers the largest allelic variability observed in tomato. Predawn and midday water potentials, chlorophyll a fluorescence, growth and fruit quality traits [contents in sugars, acids, carotenoids, and ascorbic acid (AsA)] were measured throughout the experiment. Important genotypic variations were observed both at the plant and fruit levels and variations in fruit and leaf traits were found not to be correlated. Overall, the WD treatments were at the origin of important osmotic regulations, reduction of leaf growth, acclimation of photosynthetic functioning, notably through an increa...Continue Reading

References

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Dec 3, 2015·Journal of Plant Physiology·Julie RipollNadia Bertin

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Citations

Jun 1, 2016·Frontiers in Plant Science·Zhanwu DaiMichel Génard
Aug 7, 2018·The Plant Journal : for Cell and Molecular Biology·Elise AlbertMathilde Causse
Jan 21, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Nafissa DehimecheMichael Staudt

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Methods Mentioned

BETA
chemical treatment
AsA

Software Mentioned

R3
lsmeans
multcompView
R
igraph
MAGIC TOM
R Core Team
Car
gplots
GeneNet

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