PbrCSP1, a pollen tube-specific cold shock domain protein, is essential for the growth and cold resistance of pear pollen tubes.

ABSTRACT: Cold shock domain proteins (CSPs), initially identified in Escherichia coli, have been demonstrated to play a positive role in cold resistance. Previous studies in wheat, rice, and Arabidopsis have indicated the functional conservation of CSPs in cold resistance between bacteria and higher plants. However, the biological functions of PbrCSPs in pear pollen tubes, which represent the fragile reproductive organs highly sensitive to low temperature, remain largely unknown. In this study, a total of 22 CSPs were identified in the seven Rosaceae species, with a focus on characterizing four PbrCSPs in pear (Pyrus bretschneideri Rehder). All four PbrCSPs were structurally conserved and responsive to the abiotic stresses, such as cold, high osmotic, and abscisic acid (ABA) tre

SUBMITTER: Zhu X 

PROVIDER: S-EPMC10879076 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature