Table 1.
Transgenic cassava cultivars reported since 2010 for which genes expressing traits of interest for producers and/or consumers, other than marker and selectable genes, have been introduced
| Source | Cassava genotypes | Traits of interest (genes) |
|---|---|---|
| Welsch et al. (2010) | 60444 | Biofortified β-carotene (crtB) |
| Bonilla (2010) | 60444 | Biofortified β-carotene (crtB, crtI, crtY) |
| Zhang et al. (2010) | 60444 | Leaf retention (senescence-inducible ipt) |
| Zhao et al. (2011) | 60444 | Waxy starch (RNAi GBSSI) |
| Yadav et al. (2011) | 60444 | CBSVD (RNAi FL-CP) |
| Narayanan et al. (2011) | 60444 | Protein content/cyanogenic content (HNL) |
| Taylor et al. (2012) | 60444 | RNAi CMD (ACMV/EACMV); CBSD (n.d.) |
| Ihemere et al. (2012) | 60444z | Iron biofortification (FEA1) |
| Vanderschuren et al. (2012) | TME7 (Oko-Iyawo) | CMV and CBSV resistance (RNAi-CBSV coat protein) |
| Koehorst-van Putten et al. (2012) | Adira4 | Waxy starch (RNAi-GBSSI) |
| Ogwok et al. (2012) | 60444 | UCBSV resistance (siRNA-UCBSV coat protein) |
| Failla et al. (2012) | 60444 | Biofortified β-carotene (crtB and DXS) |
| Odipio et al. (2014) | 60444 | UCBSV resistance (RNAi-UCBSV coat protein) |
| Ntui et al. (2015) | KU50z | Resistance to Sri Lankan CMV (AV2 and AV1 coat proteins) |
| Narayanan et al. (2015) | TME 204 | Iron biofortification (AtVIT1) |
| Chauhan et al. (2015) | TME 204, TME7, 60444 | Resistance to CBSV and UCBSV, increase carotene content in roots |
| Li et al. (2015) | 60444 | Biofortified vitamin B6 (AtTDX1.1 and AtTDX2) |
| CIAT 2015 (this review)y | 60444, SM1219-9 | Centromere-engineering for haploid induction and herbicide (PPT) tolerance (RNAi-CENH3 and modified versions of CENH3 plus bar)x; tolerance to PPD (root-specific SOD)w; resistance to Xanthomonas (RNAi-RXam1)v; stomatal opening (guard cell-specific AtAHA2); flowering induction (phloem-specific Hd3a from rice) |
Other reports on transgenic cassavas previous to 2010 were reviewed by Liu et al. (2011)
zCultivars transformed using SEDCs rather than FEC
yOver 260 Southern-positive, transgenic lines have been produced, some currently on field trials or in the greenhouse
xIn collaboration with A. Britt, UC-Davis, USA
wIn collaboration with P. Beyer, Univ. of Freiburg, Germany
vIn collaboration with C. López, Univ. Nacional de Colombia