PJB-2020-206
CELL WALL INVERTASE REGULATES APICAL AND VEGETATIVE ORGAN GROWTH OF TOMATO
Astija
Abstract
Study on the growth of tomato plants affected by external factors such as fertilizer, temperature , humidity, soil structure had been intensively conducted. However, it is little known on the growth of the plants due to internal factors particularly cell wall invertase. This study aims to determine a regulation of cell wall invertase on the apical and vegetative growth of the plants. Two sets of tomato plants consisting of transgenic and wild type plants of each were used in this study. One type of the transgenic plants had less activity of the cell wall invertase caused by silencing of cell wall invertase gene, LIN5 called TLINA. Another transgenic plant had been silenced an inhibitor gene of the cell wall invertase, INVINH, leading to higher cell wall invertase activity named TINHI. For both wild types of the plants were named WLINA and WINHI, respectively, those were used as the control plants. Results of the study showed that apical shoot growth of transgenic plants (TLINA) was stopped, resulting in an axial shoot grew to replace a role of the apical shoot. In addition, vegetative organs of TLINA plants grew lower than wild type plants. Interestingly, the vegetative organs of TINHI plants grew higher than both wild types and TLINA plants. This evidence suggested that cell wall invertase regulates apical and vegetative organs of plants.
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