Title:	‘Root of all success’: Plasticity in root architecture of invasive wild radish for adaptive benefit
Authors:	Bhattacharya, Samik Gröne, Franziska Przesdzink, Felix Ziffer-Berger, Jotham Barazani, Oz Mummenhoff, Klaus Kappert, Niels
ORCID of the author:	https://orcid.org/0000-0002-2633-9489 https://orcid.org/0000-0001-5614-9945 https://orcid.org/0000-0002-8449-1593 https://orcid.org/0000-0001-6151-5217
Abstract:	Successful plant establishment in a particular environment depends on the root architecture of the seedlings and the extent of edaphic resource utilization. However, diverse habitats often pose a predicament on the suitability of the fundamental root structure of a species that evolved over a long period. We hypothesized that the plasticity in the genetically controlled root architecture in variable habitats provides an adaptive advantage to worldwide-distributed wild radish (Raphanus raphanistrum, Rr) over its close relative (R. pugioniformis, Rp) that remained endemic to the East Mediterranean region. To test the hypothesis, we performed a reciprocal comparative analysis between the two species, growing in a common garden experiment on their native soils (Hamra/Sandy for Rr, Terra Rossa for Rp) and complementary controlled experiments mimicking the major soil compositions. Additionally, we analyzed the root growth kinetics via semi-automated digital profiling and compared the architecture between Rr and Rp. In both experiments, the primary roots of Rr were significantly longer, developed fewer lateral roots, and showed slower growth kinetics than Rp. Multivariate analyses of seven significant root architecture variables revealed that Rr could successfully adapt to different surrogate growth conditions by only modulating their main root length and number of lateral roots. In contrast, Rp needs to modify several other root parameters, which are very resource-intensive, to grow on non-native soil. Altogether the findings suggest an evo-devo adaptive advantage for Rr as it can potentially establish in various habitats with the minimal tweak of key root parameters, hence allocating resources for other developmental requirements.
Citations:	Bhattacharya S, Gröne F, Przesdzink F, Ziffer-Berger J, Barazani O, Mummenhoff K and Kappert N (2022): ‘Root of all success’: Plasticity in root architecture of invasive wild radish for adaptive benefit. Front. Plant Sci. 13:1035089.
URL:	https://doi.org/10.48693/319 https://osnadocs.ub.uni-osnabrueck.de/handle/ds-202305048943
Subject Keywords:	root system architecture (RSA); root plasticity; Raphanus; East Mediterranean; soil surrogates; adaption; habitat preference
Issue Date:	16-Nov-2022
License name:	Attribution 4.0 International
License url:	http://creativecommons.org/licenses/by/4.0/
Type of publication:	Einzelbeitrag in einer wissenschaftlichen Zeitschrift [Article]
Appears in Collections:	FB05 - Hochschulschriften Open-Access-Publikationsfonds

This item is licensed under a Creative Commons License