Expressing the Saccharomyces cerevisiae SUC2 gene encoding invertase apoplastic localization in the transgenic potato (Solanum tuberosum L.) does not contribute to microtubers production of identical physiological age

Study was aimed at assessing the role of apoplastic invertase in synchronization microtuber formation potato plants vitro. A non-transgenic (Solanum tuberosum L.) (hereinafter nonTPs) and a line plants, which expressed SUC2 gene Saccharomyces cerevisiae encoding localization under control B33 promoter patatin TPs), used to achieve this purpose. Cell divisions axillary meristems single-node cuttings were synchronized by exposing 7°C for 24 h MS medium (without agar). After low-temperature, (LTS) proportion simultaneously dividing cells nonTPs four-fold greater than without chilling. The LTS did not change number TPs. contributed an increase mass size microtubers both lines. All physiological maturity. At same time, TPs physiologically immature, with high glucose content. During tuber formation, activity acidic invertases higher that nonTPs. Microtubers larger nonTPs, more hydrated low starch amount. Propably accumulated may act as signal trigger cell division. It indicates regulatory function sugars. plays negative production identical age.