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Review of Preprint: Benzoxazinoid-mediated microbiome feedbacks enhance Arabidopsis growth and defense
By J.M. D’Amobrosio, S. Frecha, S. Lorenzani, J. Benjamín, E. Perk, R. Pantaleno, P. Schiel, N. Tebez, A.M. Laxalt
Why selected the pre-print as part of our first experience reviewing a pre-print in the just founded pre-print club at the IIB, Mar del Plata, Argentina. We are learning how to do it, and in doing so…we hope to contribute to improve the MS.
doi: https://doi.org/10.1101/2024.10.21.619081
Summary
The authors provide a context for the study, yet several areas would benefit from clarification and additional references. Specifically:
Line 84: The origin of APO and the specific microorganisms involved in its metabolism are not clearly defined. Providing more detail on these aspects would enhance the reader's understanding of the study's relevance.
Additionally, the potential benefits to maize for releasing exudates are implied but not explicitly discussed. The authors should clarify if these exudates inhibit the growth of other species, or if they provide some other selective advantage.
Figure 1
Enhancing the clarity of the experimental design and the rationale behind the choice of representative experiment in the figure legend would help readers better understand the purpose and context of the data. Additionally, specifying the number of replicates in the figure legend would improve data transparency and assist readers in assessing the reliability of the results.
For Panel E, a revised layout could better align with the overall data presentation. Lastly, to avoid potential misunderstandings, it may be beneficial to reserve terms like “trend” (Line 270) for statistically significant findings.
Figure 2
For Fig. 2b, it would be helpful to label the x-axis with specific time points (days) and add units for the concentration measurements.
An interesting question arises regarding whether the BX-nat soil treatment could also receive exudate as part of the experimental setup. This could provide valuable comparative insights.
Figure 3
The current conclusions drawn from Fig. 3 do not appear to be fully supported by the graphical data. For instance, Lines 313-315 state, “Together with the plant growth data (Fig. 2a), these experiments suggested that BXs in soil cause a differentiation of the root microbiotas and that these differential microbiotas – particularly the bacteria – would drive the differential growth of Arabidopsis.” However, these observations are not readily apparent from the figure. The authors should either adjust this conclusion to reflect observable trends more accurately or provide additional evidence to substantiate it.
Figure 4
No comments.
Figure 5
Including a representative photograph of Arabidopsis infected with Botrytis would add a valuable visual context to the findings.
The small growth area in experiment IX is intriguing; it would be helpful to provide an explanation or hypothesis for this variation.
The differences in lesion area caused by the pathogen across experiments also stand out and merit further discussion. Additionally, unifying the plant age between the main text and figure legend in Materials and Methods would improve clarity.
Finally, the authors should clarify whether sterile soil was used in the infection experiments, as this detail would impact interpretation.
The authors declare that they have no competing interests.
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