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‘Root of all success’: Plasticity in root architecture of invasive wild radish for adaptive benefit
Year:
2022
Source of publication :
Frontiers in Plant Science
Authors :
Barazani, Oz
;
.
Volume :
Co-Authors:

Samik Bhattacharya
 Franziska Gröne
 Felix Przesdzink
Jotham Ziffer-Berger
Oz Barazani
 Klaus Mummenhoff
Niels Kappert

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Total pages:
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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 raphanistrumRr) over its close relative (R. pugioniformisRp) 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.

Note:
Related Files :
Adaption
East Mediterranean
habitat preference
Raphanus
Root plasticity
root system architecture (RSA)
soil surrogates
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More details
DOI :
10.3389/fpls.2022.1035089
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
62695
Last updated date:
11/12/2022 17:31
Creation date:
11/12/2022 17:30
Scientific Publication
‘Root of all success’: Plasticity in root architecture of invasive wild radish for adaptive benefit

Samik Bhattacharya
 Franziska Gröne
 Felix Przesdzink
Jotham Ziffer-Berger
Oz Barazani
 Klaus Mummenhoff
Niels Kappert

‘Root of all success’: Plasticity in root architecture of invasive wild radish for adaptive benefit

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 raphanistrumRr) over its close relative (R. pugioniformisRp) 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.

Scientific Publication
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