Os10g0494800

The rice Os10g0494800 was reported as OsKTN80a in 2014 by researchers from China.

Annotated Information

Figure 6. Comparison of the cell division process between wild type (WT) and KTN80a‐OX plants..

Gene Symbol

• Os10g0494800 <=> OsKTN80a,KTN80a

Function

• Katanin, a microtubule‐severing enzyme, consists of two subunits: the catalytic subunit P60, and the regulatory subunit P80.
• In several species, P80 functions in meiotic spindle organization, the flagella biogenesis, the neuronal development, and the male gamete production.
• Overexpression of OsKTN80a, a katanin P80 ortholog, caused the repressed cell elongation and stalled cell division mediated by microtubule apparatus defects in primary root in Oryza sativa.
• OsKTN80a, possibly associated with OsKTN60, is involved in root growth via regulating the cell elongation and division.
• OsKTN80a acts as a microtubule stabilizer
• KTN80a functions in cell expansion

Phenotypic analysis

• As shown in Figure 6A–C, E–G, all of the microtubule configurations and the corresponding dimensions before telophase are fundamentally normal in KTN80a overexpressed plants when compared with the WT (Table 2). However, in cytokinesis, the daughter nuclei distance is dominantly shorter in transgenic plants than in WT (Figure 6D, H).
• By contrast to the daughter nuclei distance, the phragmoplast length is longer, compared with the WT, by overexpression of KTN80a, yet the configuration of most phragmoplasts is somehow normal (Figure 6D, H).

Labs working on this gene

• State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan 430072, China.