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Nitrogen-Activated CLV3/ESR-Related 4 (CLE4) Regulates Shoot, Root, and Stolon Growth in Potato.
- Source :
- Plants (2223-7747); Oct2023, Vol. 12 Issue 19, p3468, 10p
- Publication Year :
- 2023
-
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 Solanum tuberosum CLE4 (StCLE4) 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 StCLE4 resulted in the repression of the StIT1 gene, a regulator of potato tuber initiation. StCLE4-overexpressing stolons were converted into branches, that were similar to a mild phenotype of the it1 (identity of tuber 1) mutant. We also found that NIN-like proteins, key regulators of nitrate signaling bind to the regulatory sequence of StIT1 in a yeast one-hybrid assay. Taken together, our findings suggest that StCLE4 regulates shoot, root, and stolon growth in potato. [ABSTRACT FROM AUTHOR]
- Subjects :
- POTATOES
SHOOT apexes
ROOT growth
TUBERS
Subjects
Details
- Language :
- English
- ISSN :
- 22237747
- Volume :
- 12
- Issue :
- 19
- Database :
- Complementary Index
- Journal :
- Plants (2223-7747)
- Publication Type :
- Academic Journal
- Accession number :
- 172986369
- Full Text :
- https://doi.org/10.3390/plants12193468