Gene Details:

• MSU gene ID: LOC_Os06g27890
• RAPdb gene ID: Os06g0473200
• Gene Symbol: OsMKK3
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• It is proposed that OsMKK3 mediated positive regulation of rice resistance to BPH by means of herbivory-induced phytohormone dynamics.
• It was observed that mechanical wounding, infestation of brown planthopper (BPH) Nilaparvata lugens, and treatment with methyl jasmonate (MeJA) or salicylic acid (SA) could induce the expression of OsMKK3.
• The over-expression of OsMKK3 (oe-MKK3) increased levels of jasmonic acid (JA), jasmonoyl-L-isoleucine (JA-Ile), and abscisic acid (ABA), and decreased SA levels in rice after BPH attack.
• Here, we show that OsMKK3 encode a MAP kinase kinase that controls grain size and chalkiness by affecting cell proliferation in spikelet hulls.
• Natural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice.
• Wild rice accessions contained four OsMKK3 haplotypes, suggesting that the OsMKK3 haplotypes present in cultivated rice likely originated from different wild rice accessions during rice domestication.
• Overall, the results indicated that beneficial OsMKK3 alleles could be used for genomic-assisted breeding for rice cultivar improvement and be polymerized with other beneficial alleles.

Function-related keywords:

• resistance ,  jasmonate ,  brown-planthopper ,  salicylic-acid ,  abscisic-acid ,  jasmonic ,  jasmonic-acid ,  phytohormone ,  sa ,  SA ,  methyl-jasmonate ,  Kinase ,  spikelet ,  grain ,  grain-size ,  kinase ,  domestication ,  breeding ,  chalkiness ,  cell-proliferation

Literature:

• OsMKK3, a Stress-Responsive Protein Kinase, Positively Regulates Rice Resistance to Nilaparvata lugens via Phytohormone Dynamics .  DOI:  10.3390/ijms20123023 ;  PMID:  31226870
• OrMKK3 Influences Morphology and Grain Size in Rice .  DOI:  10.1007/s12374-020-09290-2 ;  PMID:  33424241
• Natural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice .  DOI:  10.3389/fpls.2021.784037 ;  PMID:  34899812

Related News:

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: