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Gene Review:

STY1 - protein SHI RELATED SEQUENCE 1

Arabidopsis thaliana

Synonyms: SHI RELATED SEQUENCE 1, SRS1, STYLISH 1

Sohlberg, J.J. et al., Dhankher, O.P. et al., Kuusk, S. et al.

Kuusk, Sohlberg, Long, Fridborg, Sundberg,

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High impact information on STY1

Arabidopsis thaliana plants transformed with the arsC gene expressed from a light-induced soybean rubisco promoter (SRS1p) strongly express ArsC protein in leaves, but not roots, and were consequently hypersensitive to arsenate [1].
A transposon insertion in the STYLISH1 (STY1) gene results in gynoecia with aberrant style morphology, while an insertion mutation in the closely related STYLISH2 (STY2) gene has no visible effect on gynoecium development [2].
STY1 regulates auxin homeostasis and affects apical-basal patterning of the Arabidopsis gynoecium [3].
These phenotypes, which are enhanced in the sty1-1 sty2-1 double mutant, suggest that auxin homeostasis or signalling might be affected by mutations in STY1 and STY2, both members of the SHI gene family [3].
Furthermore, we show that STY1 activates transcription of the flavin monooxygenase-encoding gene THREAD/YUCCA4, involved in auxin biosynthesis, and that changes in expression of STY1 and related genes lead to altered auxin homeostasis [3].

Biological context of STY1

Our results suggest that STY1 and related genes promote normal development of the style and affect apical-basal patterning of the gynoecium through regulation of auxin homeostasis [3].

References

Engineering tolerance and hyperaccumulation of arsenic in plants by combining arsenate reductase and gamma-glutamylcysteine synthetase expression. Dhankher, O.P., Li, Y., Rosen, B.P., Shi, J., Salt, D., Senecoff, J.F., Sashti, N.A., Meagher, R.B. Nat. Biotechnol. (2002) [Pubmed]
STY1 and STY2 promote the formation of apical tissues during Arabidopsis gynoecium development. Kuusk, S., Sohlberg, J.J., Long, J.A., Fridborg, I., Sundberg, E. Development (2002) [Pubmed]
STY1 regulates auxin homeostasis and affects apical-basal patterning of the Arabidopsis gynoecium. Sohlberg, J.J., Myrenås, M., Kuusk, S., Lagercrantz, U., Kowalczyk, M., Sandberg, G., Sundberg, E. Plant J. (2006) [Pubmed]

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