Plant ATP binding cassette (ABC) transporters are membrane proteins that are important for transporting a wide range of compounds, including secondary metabolites and phytohormones. In Arabidopsis, some members of the ABCB subfamily of ABC transporter, also known as Multi-Drug Resistance proteins (MDRs), have been implicated in auxin transport. However, reports on the roles of the auxin-mediated ABCBs in fleshy fruit development are rare. Here, we present that SlABCB4, a member of the tomato ABCB subfamily, transports auxin in the developing fruit of tomato. Transient expression of SlABCB4-GFP fusion proteins in tobacco cells showed plasma membrane localization. The transport activity of SlABCB4, expressed in Nicotiana benthamiana protoplasts, revealed substrate specificity for indole-3-acetic acid export. Gene expression analysis of SlABCB4 revealed high expression levels at the early stages of fruit development. Therefore, SlABCB4 is considered to facilitate auxin distribution in tomato fruit, which is important for tomato fruit development.

Vegetable plays a key role in food and nutrition security in Ghana as the country’s food system shifts from food quantity to diet quality and health benefits. This chapter looks at the role vegetables play in the diets of humans in ensuring food and nutrition security. Traditional locally available underutilized vegetable crops as well as exotic vegetable crops could be utilized to improve nutrition and health. One of the strategies for promoting vegetable production is the development and adoption of innovative and modern technologies to address major challenges impeding the advancement of vegetable production in Ghana. These challenges include lack of improved varieties, nonfunctional seed systems, poor infrastructure for storage and processing, uncontrolled use of agrochemicals, etc. Genetic manipulation, soil and water management as well as integrated pest and disease management have been harnessed with significant achievement to boost vegetable production. Other emerging, including nursery management, controlled environment (such as a greenhouse), grafting, post-harvest handling, digital marketing, information and extension services can also be promoted. Greenhouse production increases vegetable crop quality and productivity, which results in higher economic returns. Finally, the chapter highlights the enormous prospects and contributions of vegetable production towards reducing rural poverty and unemployment.