Table 1.

A summarized account of the HGT events reported in plant–endophyte associations.

No.	Endophyte	HGT Phenomenon	Beneficial Role(s)	Ref.
1.	Pseudomonas putida W619-TCE	Bacteria to bacteria	Trichloroethylene degradation	[24]
2.	Burkholderia cepacia strain FX2	Bacteria to bacteria	Biodegradation of toluene, disease reduction on wheat and corn plants	[25]
3.	Epichloe (syn. Neotyphodium)	Endophytic fungi to grasses	Adaptation for angiosperms	[27]
4.	Agrobacterium tumefaciens	Plants to endophyte	Phytoremediation of arsenic contaminated soil	[28]
5.	Endophytic fungi	Plants to endophyte	Production of secondary metabolites	[29]
6.	Endophytic fungi	Plant to endophyte	Production of secondary metabolites	[30]
7.	Burkholderia cepacia L.S.2.4	Bacteria to bacteria	Phytoremediation of toluene and organic pollutants	[31]
8.	Rhizophagus irregularis	Bacteria and plants to fungi	Evolution and symbiotic adaptation of the arbuscular mycorrhizal fungi	[32]