[1] Univ La Reunion, CIRAD, UMR PVBMT CIRAD, F-97410 St Pierre, Ile La Reunion, France
[2] CIRAD, UPR Syst Cotonniers Petit Paysannat, Garoua, Cameroon
[3] Univ Cape Town, Inst Infect Dis & Mol Med, ZA-7925 Cape Town, South Africa
[4] Univ Cape Town, Electron Microscope Unit, ZA-7701 Cape Town, South Africa
[5] Univ Canterbury, Sch Biol Sci, Christchurch 1, New Zealand