Table 1.
Genes that are specifically or predominantly expressed in endosperm transfer cells*.
| Plant | Gene name | Protein type | GenBank Accession | Suggested function** | Cited | |
|---|---|---|---|---|---|---|
| Zea mays | ZmTCRR-1 | Type-A response regulator | AM085299 | Signal transduction | Muñiz et al. (2006) | |
| Zea mays | ZmTCRR-2 | Type-A response regulator | Unavailable*** | Signal transduction | Muñiz et al. (2010) | |
| Zea mays | ZmMRP-1 | One-repeat MYB TF | AJ318518 | Transcriptional activation of ETC/BETL-specific genes | Gómez et al. (2002) | |
| Zea mays | ZmMRPI-1 | C2H2 zinc finger protein | NM_001153367 | Negative regulator of ZmMRP-1 | Royo et al. (2009) | |
| Zea mays | ZmMRPI-2 | C2H2 zinc finger protein | NM_001158398 | Negative regulator of ZmMRP-1 | Royo et al. (2009) | |
| Zea mays | INCW2 | Cell-wall invertase | AF165180 | Converting sucrose into glucose and fructose | Carlson et al. (2000) | |
| Sorgum bicolor | SbINCW | Cell-wall invertase | EF177465 (partial CDS) | Converting sucrose into glucose and fructose | Jain et al. (2008b) | |
| Oriza sativa | GIF1 | Cell-wall invertase | EU095553 | Converting sucrose into glucose and fructose | Wang et al. (2008a) | |
| Hordeum vulgare | HvCWINV1 | Cell-wall invertase | AJ534447 | Converting sucrose into glucose and fructose | Weschke et al. (2003) | |
| Gossypium hirsutum | GhCWIN1 | Cell-wall invertase | AI725433**** | Converting sucrose into glucose and fructose | Wang and Ruan (2012) | |
| Hordeum vulgare | HvSF6FT1 | Sucrose:fructan 6-fructosyltransferase (soluble invertase) | X83233 | Converting sucrose into glucose and fructose | Weschke et al. (2003) | |
| Hordeum vulgare | HvSTP1 | Hexose transporter | AJ534445 | Importing hexoses into the endosperm | Weschke et al. (2003) | |
| Zea mays | MEG1 | LTP, defensin type | AY536121 | Protection against pathogens | Gutierrez-Marcos et al. (2004) | |
| Zea mays | BETL-1 | LTP, defensin type | JQ420076 | Protection against pathogens | Hueros et al. (1995) | |
| Zea mays | BETL-2 (BAP2) | LTP | AJ133529 | Signal transduction, protection against pathogens | Hueros et al. (1999a) | |
| Zea mays | BETL-3 | LTP, defensin type | AJ133530 | Protection against pathogens | Hueros et al. (1999a) | |
| Zea mays | BETL-4 | LTP, Bowman-Birk family of α-amylase/trypsin inhibitors | AJ133531 | Protection against insects and pathogens | Hueros et al. (1999a) | |
| Oriza sativa | OsPR9a | LTP, defensin type | EU264060 | Protection against insects and pathogens | Li et al. (2008) | |
| Hordeum vulgare | END1 | nsLTP | Z69631 | Signal transduction, protection against pathogens | Doan et al. (1996) | |
| Oriza sativa | OsPR602 | nsLTP | EU264061 | Signal transduction, protection against pathogens | Li et al. (2008) | |
| Triticum aestivum | TaPR60 | nsLTP | EU264062 | Signal transduction, protection against pathogens | Kovalchuk et al. (2009) | |
| Oriza sativa | AL1 | Anthranilate N-hydroxycinnamoyl/ benzoyltransferase | Os01g0382200 (Rice Annotation Project Database) | Function in plants is unknown | Kuwano et al. (2011) |
*
Genes in the Table 1 are arranged according to the group specification in the text.
**
Current knowledge of the function of ETC-specific genes is dependent on available data, and thus in some instances function of ETC-specific genes is speculative.
***
Sequence originates from a private cDNA collection.
****
The EST sequence used for cloning a full-length CDS. The full length CDS sequence was not provided by Wang and Ruan (2012).