Figure 1.
Hypothesized colonization cycle of bacterial endophytes in the host plant. (a) Mobilization of seed endophytes in germinating seedlings. (b) Recruitment of alien endophytes from the soil in developing seedlings. (c) Colonization by alien and inherited endophytes. (d) Whole plant colonization by various endophytes. (e) Variation of endophyte communities in the host plant in response to different biotic and abiotic stresses. (f) Vertical transfer of endophytes into seeds.