How Jie Li is fortifying tomatoes with vitamin D

ByLois C

Jun 1, 2022 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Published:
8:30 AM May possibly 28, 2022



With vegan and vegetarian weight loss plans on the increase, deficiencies in vitamin D are becoming more and more frequent. Jie Li, postdoctoral researcher at the John Innes Centre at Norwich Analysis Park, describes how she is applying gene enhancing to fortify tomatoes and play ‘ketchup’ on this international community wellness situation.

Each individual thirty day period, these functioning at the pioneering heart of Norwich Analysis Park tell us how their perform is shaping the planet we live in. Go through their stories below.   

What does your investigation entail?  

My research uses biotechnologies, such as gene enhancing, to enrich meals resources with vital vitamins and phytonutrients. Gene enhancing is like a pair of molecular tweezers. You could use the technique to snip out a modest fragment of a gene and alter the pathway to enhance diet in plants. My investigation is focused on biofortifying tomatoes with vitamin D3.  

Biofortification is an successful way to handle vitamin deficiencies, not only with tomatoes. We imagine there is prospective to examine equivalent choices in intently linked plants these kinds of as pepper, aubergine and potato. 

I am also a board member of the EDESIA PhD programme, funded by the Wellcome Rely on, to advance key aspects of plant-centered diet and wellbeing – from crop to clinic.  

Why is vitamin D vital? 

Vitamin D is regarded as the sunshine vitamin. It is created in our body following the pores and skin is uncovered to ultraviolet B (UVB) gentle, but a major source of vitamin D is our food plan, fish in certain. Most vegetation contain very very little vitamin D and, with the increasing level of popularity of plant-based mostly diet programs, there is a apparent and urgent need to have for sustainable, plant-dependent resources of vitamin D. 

Somewhere around just one billion people today globally are influenced by insufficiencies in vitamin D, which is affiliated with a adverse influence on immune operate and swelling. It is also linked to a higher risk of most cancers, dementia and depression. Studies have even joined vitamin D insufficiency with amplified severity of Covid-19 infection. 

In the Uk, the average consumption of vitamin D from dietary resources is about three micrograms for every working day but the suggested each day consumption is 10 micrograms. Two medium-sized biofortified tomatoes could most likely fill this nutritional gap. Engineering vitamin D in crops is a novel and economic way to deal with the insufficiency, with the included opportunity for producing vegan-pleasant supplements from leaf extracts of the vitamin D enriched crops.  

Why does your study emphasis on tomatoes? 

Tomatoes obviously comprise the making block of vitamin D3 – identified as provitamin D3 or 7-dehydrocholesterol (7-DHC). But provitamin D3 does not ordinarily accumulate in ripe tomato fruits. Gene enhancing allows us to introduce or boost some attributes considerably a lot more correctly, precisely and much a lot more rapidly than common breeding procedures. 

I engineered provitamin D3 in tomatoes by using gene editing to block an enzyme called 7-dehydrocholesterol reductase 2 (Sl7-DR2). Blocking this enzyme in tomatoes had no outcome on growth, progress or generate the gathered provitamin D3 can then be converted to vitamin D3 via UVB irradiation. Immediately after cure with UVB, one tomato contains the equivalent stages of vitamin D3 as two medium-sized eggs or 28 grams of tuna. 


Jie Lie with Lego Hogwarts Castle from Harry Potter


Jie is a huge enthusiast of Lego and has built Hogwarts Castle from Harry Potter!

– Credit score: Jie Li

Why did you decide to pursue a job in science?   

I acquired my bachelor’s diploma in Agronomy from China Agricultural University in Beijing and took a hole calendar year operating in the lab. I was very fortunate to get an option to be a part of the summer season school at the John Innes Centre wherever I spent 8 weeks in 2012, which encouraged me to do my PhD.  

It was a gradual procedure to choose to come to be a scientist, but with the assist of my supervisor Prof Cathie Martin and the great science surroundings at Norwich Research Park, I arrived back to Norwich in 2013 and have been listed here ever since!  

What is the most effective thing about functioning at Norwich Investigation Park?   

Norwich Investigation Park is a varied, respectful and collaborative doing work ecosystem. It is particularly the variety of setting that can produce great science and give youthful scientists the appropriate assistance or mentorship to create their careers.  

The John Innes Centre and Quadram Institute Bioscience just concluded an application for funding from the Biotechnology and Organic Sciences Exploration Council (BBSRC) to build a Biofortification Hub that will purpose to produce new biofortified meals and test their nutritional efficacy. We’re striving to support tackle worldwide health difficulties, which requires that we do the job with growers, foods businesses, nutritionists and policymakers.  

This perform cannot be achieved by any solitary scientist, which is why the collaborative ecosystem of Norwich Study Park is the best put to reach this. If we’re productive, we will bridge the gap among tutorial research, foodstuff production and regulatory bodies to raise recognition of the value of well balanced nutrition for a healthy life-style.  

What do you get up to when you are not functioning?  

Norwich is a lovely location. Scientific work necessitates very substantial degrees of focus, so I enjoy going for walks in the town to rest and remain healthier. I’m also a huge enthusiast of Lego. I delight in the method of creating with these smaller bricks, like Hogwarts Castle from Harry Potter! 

Jie Li is a postdoctoral researcher at the John Innes Centre at Norwich Study Park.

By Lois C