A nucleoside diphosphate kinase gene OsNDPK4 is involved in root development and defense responses in rice (Oryza sativa L.)

Planta
Jin YeShihua Zhu

Abstract

Dysfunctional mutation of OsNDPK4 resulted in severe defects in root development of rice. However, the resistance of Osndpk4 against bacterial blight was significantly enhanced. Nucleoside diphosphate kinases (NDPKs) are an evolutionarily conserved family of important enzymes balancing the energy currency nucleoside triphosphates by catalyzing the transfer of their phosphate groups. The aim of this study was to elucidate the function of OsNDPK4 in rice. A dysfunctional rice mutant was employed to characterize the function of OsNDPK4. Its expression and subcellular localization were examined. The transcriptomic change in roots of Osndpk4 was analyzed by RNA-seq. The rice mutant Osndpk4 showed severe defects in root development from the early seedling stage. Further analysis revealed that meristematic activity and cell elongation were significantly inhibited in primary roots of Osndpk4, together with reduced accumulation of reactive oxygen species (ROS). Map-based cloning identified that the mutation occurred in the OsNDPK4 gene. OsNDPK4 was found to be expressed in a variety of tissues throughout the plant and OsNDPK4 was located in the cytosol. Osndpk4 showed enhanced resistance to the bacterial pathogen Xanthomonas oryzae pv. ...Continue Reading

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Datasets Mentioned

BETA
PRJNA518165

Methods Mentioned

BETA
salt treatment
transgenic
PCR
RNA-seq

Software Mentioned

Cufflinks pipline
MapMan
Cufflinks
R
TopHat

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