Table 1.

Some examples of CRISPR/Cas9-mediated genome editing in crop plants cultivated in the tropical climates for development of tolerance to abiotic and biotic stresses.

Crop	Target gene(s)	Target traits	Type of edit	Results	References
Banana	Phytoene desaturase	Trial for CRIPSR	Gene disruption	Decreased chlorophyll and total carotenoid contents	Kaur et al., 2017, 2018
Cassava	Phytoene desaturase	Trial for CRIPSR	Gene disruption	Observation of albino phenotype	Odipio et al., 2017
Cassava	elF4E isoforms nCBP-1 & nCBP-2	Resistance to cassava brown streak disease	Gene disruption	Elevated resistance to cassava brown streak disease	Gomez et al., 2017
Theobroma cacao	TcNPR3, a suppressor of the defense response	Resistance to the cacao pathogen Phytophthora tropicalis	Gene disruption	Increased resistance to infection with the cacao pathogen Phytophthora tropicalis	Fister et al., 2018
Cotton (Gossypium hirsutum)	CLCuD IR and Rep regions	Resistance to cotton leaf curl disease	Viral gene disruption	Targeted cleavage of mixed infections by multiple viruses and associated DNA satellites, such as CLCuD-complex	Iqbal et al., 2016
Rice	OsSWEET11, OsSWEET14 (rice bacterial blight susceptibility genes)	Resistance to bacterial blight	Promoter disruption	The promoter of the blight susceptibility gene was disrupted	Jiang et al., 2013
Rice	OsERF922 (ethylene responsive factor transcription factor)	Resistance to rice blast	Gene disruption	Resistance to M. oryzae was enhanced	Wang et al., 2016
Wheat	TaMLO-A1, TaMLO-B1 and TaMLO-D1	Resistance to powdery mildew	Gene disruption	The number of mildew microcolonies formed on the leaves was significantly reduced against the control and no apparent fungal growth was observed on the leaves of edited plants	Wang et al., 2014
Wheat	TaDREB2 and TaERF3	Trial for CRISPR	Gene disruption	Provide a deep insight about their functioning in abiotic stress response	Kim et al., 2018