Kanani, P. - Department of Biotechnology, Anand Agricultural University, Anand, India 
Modi, A. - Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel

 Kumar, A.- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel

Technically, plant tissue culturists are standing in opposite lane to microbiologists. Wastage of former is desire of latter. Nevertheless, there are some biotic communities serving as a bridge between them. Bacterial or fungal colony generally seen on plant tissue culture media are immediately thrown out to control their infestation in other vessels. As such, the process of micropropagation could be sustainable only after the elimination of unwanted microbial communities. However, as elaborated prudently in other chapters, plants perform many physiological processes in their life cycle with the help of much diverse internal community of microbes called "endophytes." Symbiotic relationship between endophytes and host plant during in vitro operations may also play a vital role in order to facilitate enhanced plant growth. To improve plant growth, cultivable endophytes have been isolated and "bioticized" with plant in vitro and/or ex vitro. Cocultivation of endophytic microbes with plantlets has been demonstrated to promote significant physiological and biochemical changes providing tolerance to a number of biotic and abiotic stress factors. Focusing on the plant growth, the present chapter describes the role of these endophytes to overcome propagation-related issues and how they may help plant to proliferate in order to be beneficial for growers.