Methylotrophic bacteria like pink pigmented facultative methylotrophs (PPFMs) which are present on leaf surfaces take up methanol from the wastes of plant metabolism and contribute to growth and development of host plant in a number of ways. Using the leaf imprint method [1] and serial dilution technique, as many as 200 PPFM isolates were obtained from chilli leaves, rhizosphere soil and roots samples collected from 76 different locations and were tested for the production of plant growth promoting substances (IAA and GA). The production of IAA and GA varied among different PPFM isolates from 19.77 µg/ml to 0.14 µg/ml of culture filtrate and 128.28 µg/ ml to 4.77 µg /ml of culture filtrate respectively.
PPFM, Indole acetic acid, Gibberellic acid, HPLC
© The Author(s) 2014. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.