AI Article Synopsis
- High nitrogen levels in potatoes can cause excessive growth of leaves and stems, leading to lower yields and poorer quality tubers.
- The gene StCLE4 is mainly active in roots with high nitrogen and helps promote root growth, especially when nitrogen is low.
- Overexpression of StCLE4 represses a gene important for tuber formation, showing it plays a complex role in the growth of potato shoots, roots, and stolons.
Article Abstract
In potato, high levels of nitrogen (N) can lead to excessive vegetative growth at the expense of tuber development, resulting in lower yield and poor-quality tubers. We found that () is expressed most strongly in the roots grown in N-rich media, and it positively regulates potato root growth under N-deficient conditions. We noted that StCLE4 functions as a negative regulator of normal shoot apex development similar to CLV3 in Arabidopsis. Transcriptomic analysis revealed that overexpression of resulted in the repression of the gene, a regulator of potato tuber initiation. -overexpressing stolons were converted into branches, that were similar to a mild phenotype of the () mutant. We also found that NIN-like proteins, key regulators of nitrate signaling bind to the regulatory sequence of in a yeast one-hybrid assay. Taken together, our findings suggest that StCLE4 regulates shoot, root, and stolon growth in potato.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10574742 | PMC |
| http://dx.doi.org/10.3390/plants12193468 | DOI Listing |
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