Table 1.
Orthology of genes associated with strigolactone biosynthesis and signalling
| Oryza sativa | Arabidopsis thaliana | Petunia hybrida | Medicago truncatula | Striga hermonthica | Protein encoded and function. | Reference(s) |
|---|---|---|---|---|---|---|
| Strigolactone biosynthesis | ||||||
| D27 | At-D27 | – | Mt-D27 | – | β-carotene isomerase: Converts all-trans-β-carotene to 9-cis-β-carotene. | Liu et al. (2011); Alder et al. (2012); Waters et al. (2012a); Challis et al. (2013); Seto et al. (2014); van Zeijl et al. (2015); Bruno and Al-Babili (2016) |
| Os-CCD7/D17/HTD1 | MAX3 | DAD3 | Mt-CCD7 | – | Carotenoid cleavage dioxygenase: Cleaves β-carotene to form an apo-carotenal. | Booker et al. (2004); Zou et al. (2006); Simons et al. (2007); Challis et al. (2013); Bruno et al. (2014); Lauressergues et al. (2015) |
| Os-CCD8/D10 | MAX4 | DAD1 | Mt-CCD8 | – | Carotenoid cleavage dioxygenase: Carlactone production. | Arite et al. (2007); Simons et al. (2007); Zhang et al. (2010); Challis et al. (2013); Lauressergues et al. (2015) |
| Os-MAX1 (Os900, Os1400, Os5100) | MAX1 | – | Mt-MAX1 (Medtr3g104560) | – | Cytochrome P450 cytochrome 711 monooxygenase, carlactone oxidase and orobanchol synthase: Converts carlactone to canonical SLs and carlactone-type SLs. | Booker et al. (2005); Challis et al. (2013); Seto et al. (2014); Zhang et al. (2014); Yoneyama et al. (2018) |
| Os01g0935400 | LBO | – | – | – | 2-Oxoglutarate and Fe(II)-dependent dioxygenase: Converts methyl carlactone to a yet to be identified SL active compound. | Brewer et al. (2016) |
| Strigolactone signalling | ||||||
| D3 | MAX2/ORE9 | PhMAX2a, PhMAX2b | Mt-MAX2 (MTR_4g080020) | Sh-MAX2 | F-box protein: Component of SCF ubiquitin ligase complex required for signal transduction. | Woo et al. (2001); Stirnberg et al. (2007); Challis et al. (2013); Zhao et al. (2015); Yao et al. (2017) |
| Os-D14/D88/HTD2 | AtD14 | DAD2 | Mt-D14 | Sh-HTL7 | α/β Hydrolase: SL perception and hydrolysis. | Simons et al. (2007); Gao et al. (2009); Liu et al. (2009); Hamiaux et al. (2012); Lauressergues et al. (2015); Tsuchiya et al. (2015); de Saint Germain et al. (2016); Marzec et al. (2016); Yao et al. (2017); Yao et al. (2018) |
| D53/D53-LIKE | SMXL6, SMXL7, SMXL8 | – | – | – | Class I Clp ATPase: Poly-ubiquitination and proteolytic targets of SL signalling. Transcriptional repressors of SL responses. | Jiang et al. (2013); Soundappan et al. (2015); Wang et al. (2015) |
Abbreviations: CCD, CAROTENOID CLEAVAGE DIOXYGENASE; D, DWARF; DAD, DECREASED APICAL DOMINANCE; HTD, HIGH-TILLERING DWARF; HTL, HYPOSENSITIVE TO LIGHT; LBO, LATERAL BRANCHING OXIDOREDUCTASE; MAX, MORE AXILLARY GROWTH; ORE9, ORESARA9; SMXL, SUPPRESSOR OF MAX2 1-LIKE.