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Int. J. Mol. Sci. 2018, 19(12), 3888; https://doi.org/10.3390/ijms19123888

Morphological Characterization of Root System Architecture in Diverse Tomato Genotypes during Early Growth

1
Instituto de Bioingeniería, Universidad Miguel Hernández, 03202 Elche, Spain
2
OQOTECH Process Validation System, 03801 Alcoy, Spain
*
Author to whom correspondence should be addressed.
Received: 13 November 2018 / Revised: 29 November 2018 / Accepted: 3 December 2018 / Published: 5 December 2018
(This article belongs to the Special Issue Root Development in Plants)
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Abstract

Plant roots exploit morphological plasticity to adapt and respond to different soil environments. We characterized the root system architecture of nine wild tomato species and four cultivated tomato (Solanum lycopersicum L.) varieties during early growth in a controlled environment. Additionally, the root system architecture of six near-isogenic lines from the tomato ‘Micro-Tom’ mutant collection was also studied. These lines were affected in key genes of ethylene, abscisic acid, and anthocyanin pathways. We found extensive differences between the studied lines for a number of meaningful morphological traits, such as lateral root distribution, lateral root length or adventitious root development, which might represent adaptations to local soil conditions during speciation and subsequent domestication. Taken together, our results provide a general quantitative framework for comparing root system architecture in tomato seedlings and other related species. View Full-Text
Keywords: lateral root development; adventitious root development; plant phenomics; root growth analysis; root system architecture lateral root development; adventitious root development; plant phenomics; root growth analysis; root system architecture
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Alaguero-Cordovilla, A.; Gran-Gómez, F.J.; Tormos-Moltó, S.; Pérez-Pérez, J.M. Morphological Characterization of Root System Architecture in Diverse Tomato Genotypes during Early Growth. Int. J. Mol. Sci. 2018, 19, 3888.

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