Advances in the Molecular and Physiological Mechanisms of Early Development of Tomato Fruit

doi:10.11983/CBB17185

Abstract

Abstract: Tomato is one of the most widely cultivated and the most popular vegetable crops. It is also an important model plant of Solanaceae. The development of tomato fruit can be divided into early fruit development and fruit ripening, but fruit morphological structure and size are mainly determined by the early stage of fruit development. This review focuses on the early development of tomato fruit, including the molecular mechanism of plant hormones, cell cycle, epigenetics, and source-sink metabolism, to understand the basic biological problems of plant growth and development, as well as promoting the application of basic theoretical research results in production.

Key words: tomato, early development, plant hormones, cell cycle, epigenetic, source-sink metabolism

Zhang Tianpeng, Yang Xinghong. Advances in the Molecular and Physiological Mechanisms of Early Development of Tomato Fruit[J]. Chinese Bulletin of Botany, 2018, 53(6): 856-866.

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URL: https://www.chinbullbotany.com/EN/10.11983/CBB17185

https://www.chinbullbotany.com/EN/Y2018/V53/I6/856

Figures/Tables 2

Figure 1 Fruit development in tomato The development of tomato fruit can be divided into early fruit growth and fruit ripening, but for fruit morphological structure and fruit size, they are mainly determined the early stage of fruit development. In the period of tomato fruit early development, the characteristic is cell division and cell expansion. For the cell division process, the number of cell layers across the pericarp will be increased and fruit will be bigger than before. Fruit growth then proceeds into the cell expansion phase, in this phase, cell layers will not increase but cell enlargement occurred, leading to size increase of tomato fruit rapidly. The main characteristic of fruit ripening is the changes of fruit color and metabolites in tomato.

Figure 2 Related pathways regulate early fruit growth in tomato Arrows represent positive regulation, barred arrows represent negative regulation. CDKA1: Cyclin-dependent protein kinase A1; CDKB: Cyclin-dependent protein kinase B; CWIN: Cell wall invertase; GLK2: Golden 2-like; HMT: Histone methyltransferase; IMA: Inhibitor of meristem activity; SWEET: Sugar transporter

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