[Ca2+]cyt-ASSOCIATED PROTEIN KINASE 1 and NIMA-RELATED KINASE 2 interact during root hair cell morphogenesis.
Plant Physiol
; 2024 Jul 26.
Article
em En
| MEDLINE
| ID: mdl-39054117
ABSTRACT
Root hair growth has been studied to understand the principles underlying the regulation of directional growth. Arabidopsis (Arabidopsis thaliana) [Ca2+]cyt-ASSOCIATED PROTEIN KINASE 1 (CAP1) maintains normal vesicle trafficking and cytoskeleton arrangement during root hair growth in response to ammonium signaling. In the current study, we identified CAP1 SUPPRESSOR 1 (CAPS1) as a genetic suppressor of the cap1-1 mutation. The CAPS1 mutation largely rescued the short root hair phenotype of cap1-1. Loss of CAPS1 function resulted in significantly longer root hairs in cap1-1. MutMap analysis revealed that CAPS1 is identical to NIMA (NEVER IN MITOSIS A)-RELATED KINASE 2 (NEK2). In addition, our studies showed that NEK2 is expressed in root and root hairs. Its distribution was associated with the pattern of microtubule arrangement and partially co-localized with CAP1. Further biochemical studies revealed that CAP1 physically interacts with NEK2 and may enhance its phosphorylation. Our study suggests that NEK2 acts as a potential phosphorylation target of CAP1 in maintaining the stability of root hair microtubules to regulate root hair elongation.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Plant Physiol
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China