Os04g0379900

The rice Os04g0379900 was reported as SLL1 in 2013 by researchers from Japan.

Annotated Information

Figure 1. Phenotype of the sll1 mutant...

Function

• The SLL1 gene encodes a member of the stearoyl-acyl carrier protein fatty acid desaturase family that is the key regulator of overall fatty acid desaturation in plants.
• SLL1 is important for the elongation of lateral roots in rice.
• SLL1 over-expressers produced significantly longer lateral roots compared to the wild-type, and thus SLL1 gene would be very useful for improving rice root architecture.

Phenotypic analysis

• We did not find any large difference in the division zone between the sll1 mutant and the wild-type (Fig. 1C), but we found that the cell length was much reduced in the sll1 mutant (Fig. 1D).
• To determine whether the number of lateral roots was altered in the sll1 mutant, we measured the lateral root density and found no significant difference in the lateral root density between the wild-type and the sll1 mutant (Fig. 1E).
• This result suggests that the mutation only inhibited cell elongation in the lateral roots.

Expression

• The SLL1 gene was expressed at the lateral root tip, whereas SLL1 expression was not detected in the elongation zone of the crown roots.

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Labs working on this gene

• Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Aichi 464-8601, Japan