Abstract：
:Strigolactones (SLs) or closely related molecules were recently identified as phytohormones, acting as long-distance branching factors that suppress growth of pre-formed axillary buds in the shoot. The SL signaling pathways and light appear to be connected, as SLs were shown to induce light-regulated pathways and to mimic light-adapted plant growth. However, it is not yet clear how light affects SL levels. Here, we examined the effect of different light intensities on SL levels in tomato roots. The results show that light intensity, above a certain threshold, is a positive regulator of SL levels and of Sl-CCD7 transcription; Sl-CCD7 is involved in SLs biosynthesis in tomato. Moreover, SL accumulation in plant roots is shown to be a time-dependent process. At least some of the similar effects of light and SLs on plant responses might result from a positive effect of light on SL levels.
journal_name
J Plant Physioljournal_title
Journal of plant physiologyauthors
Koltai H,Cohen M,Chesin O,Mayzlish-Gati E,Bécard G,Puech V,Ben Dor B,Resnick N,Wininger S,Kapulnik Ydoi
10.1016/j.jplph.2011.05.022subject
Has Abstractpub_date
2011-11-01 00:00:00pages
1993-6issue
16eissn
0176-1617issn
1618-1328pii
S0176-1617(11)00284-7journal_volume
168pub_type
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