Table 2.
Candidate genes for dark growth rate and light growth rate QTL. Genes associated with the significant loci and their described roles are indicated. Markers and genes are listed in sequential order.
| Dark growth rate—5@113 cM | ||
|---|---|---|
| Associated markers | LOD value | Position |
| FD.188C | 2.59 | 113 cM |
| HH.122C/120L | 2.59 | 113 cM |
| EG.205L | 2.59 | 113 cM |
| Candidate genes | Role | |
| AT5G67030 (ABA1) | ABA biosynthesis; hypocotyl growth during skotomorphogenesis (Barrero et al. 2008) | |
| AT5G67100 (ICU2) | Regulation of SA and ABA responses (Micol-Ponce et al. 2015) | |
| AT5G67160 (EPS1) | SA biosynthesis (Torrens-Spence et al. 2019); suppression of hook formation (Huang et al. 2020) | |
| AT5G67250 (SKIP2) | F-box protein; auxin responses (Schwager et al. 2007) | |
| AT5G67440 (NPY3) | PIN localization (Furutani et al. 2011) | |
| AT5G67530 (PUB49) | Plant U-box protein, E3 ligase, unknown role | |
| Light growth rate—2@40–49 cM | ||
| Associated marker | LOD value | Position |
| CH.1500C | 2.48 | 34 cM |
| BF.221L | 2.53 | 35 cM |
| FD.85C | 2.75 | 40 cM |
| GB.105L-Col | 2.66 | 43 cM |
| FD.150C | 2.61 | 45 cM |
| GD.460L-Col | 2.67 | 47 cM |
| CC.332C | 2.67 | 47 cM |
| Erecta | 2.65 | 49 cM |
| GPA1 | 2.65 | 49 cM |
| CH.145L-Col/150C | 2.65 | 49 cM |
| AD.191L | 2.42 | 53 cM |
| BH.195L-Col | 2.42 | 53 cM |
| GD.298C | 2.41 | 54 cM |
| Candidate genes | Role | |
| AT2G23460 (XLG1) | Regulation of cytokinin responses (Wang et al. 2017) | |
| AT2G3550 (MES6); AT2G3560 (MES7); AT2G3570 (MES19); AT2G3580 (MES4); AT2G3590 (MES8); AT2G3610 (MES3); AT2G3620 (MES1) | Methyl esterase family, auxin homeostasis (Yang et al. 2008) | |
| AT2G24180 (CYP71B6) | Auxin homeostasis (Böttcher et al. 2014) | |
| AT2G24540 (AFR) | F-box protein, phytochrome-mediated light responses (Harmon and Kay 2003); photomorphogenesis (Aguilar-Hernández et al. 2017) | |
| AT2G24610 (CNGC14) | Auxin-induced changes in root growth (Shih et al. 2015) | |
| AT2G24790 (COL3) | COP1-interacting protein, photomorphogenesis (Datta et al. 2006) | |
| AT2G5160 (CYP82F1) | Cytochrome p450 family member, unknown role | |
| AT2G5170 (PKL/EPP1) | Repression of photomorphogenesis (Jing et al. 2013); BR-gibberellin integration, skotomorphogenesis (Zhang et al. 2014) | |
| AT2G5180 (RR1) | Cytokinin signalling, light responses (Argyros et al. 2008) | |
| AT2G25490 (EBF1) | F-box protein, degradation of PIF3, photomorphogenesis (Dong et al. 2017) | |
| AT2G25700 (SK3) | E3 ligase, regulation of phytochrome-A-dependent light responses (Marrocco et al. 2006) | |
| Candidate genes | Genes | |
| AT2G25930 (ELF3) | Vegetative photomorphogenesis and floral induction (Zagotta et al. 1996); shade avoidance and hypocotyl growth (Coluccio et al. 2011) | |
| AT2G26000 (BRIZ2) | E3 ligase, germination and seedling growth (Hsia and Callis 2010); skotomorphogenesis (Clouse and Sasse 1998) | |
| AT2G26070 (RTE1) | Regulation of ethylene responses (Zhou et al. 2007) | |
| AT2G26330 (Erecta) | Auxin-dependent cell elongation (Woodward et al. 2005); hypocotyl growth in darkness and blue light (Borevitz et al. 2002) | |
| AT2G26670 (HY1) | Phytochrome biosynthesis (Muramoto et al. 1999); photomorphogenesis (Davis et al. 2001). | |
| AT2G26700 (PID2) | PIN localization, phototropism (Haga et al. 2014) |