Plant Origins: Lycopersicon (Tomato)

Red was not the original color of tomatoes.Types of tomatoes.Tomatoes belong to the genus Lycopersicon (Solanaceae family).  Evidence supports the theory the first domesticated tomato was a little yellow fruit, ancestor of L. cerasiforme, grown by the Aztecs of Central America who called it ‘xitomatl’ (pronounced zee-toe-má-tel), meaning plump thing with a navel, and later called tomati by other Central American tribes. Aztec writings mention tomatoes were prepared with peppers and salt, likely to be the original salsa recipe. The tomato’s actual origin is thought to be Peru in South America where it grew wild (like a weed) several thousands of years before making its way north to Central America. 

'Zebra' tomatoesPresently, eight species still grow wild in the Andes Mountains of Peru.  Some believe Spanish explorer Cortez  may have been the first to transfer the small yellow tomato to Europe after he captured the Aztec city of Tenochtítlan in 1521, now Mexico City.  Yet others believe Christopher Columbus, an Italian working for the Spanish monarchy, discovered the tomato earlier in 1493.  The earliest discussion of the tomato in European literature appeared in an herbal written in 1544 by Pietro Andrea Mattioli, an Italian physician and botanist, who named it pomi d’oro, golden apple.  However, Mattioli’s review was a bit of bad press for the tomato as he and other distinguished authors continued to review the tomato as unhealthy or inedible because of its link to other members of the Solanaceae, notably deadly nightshade (Atropus belladonna) as it resembled the leaves of the tomato plant.  Deadly nightshade, a poisonous plant, was used as a hallucinogenic drug and a beauty aid in parts of Europe.  Its name “belladonna” (meaning beautiful woman) referred to ladies in medieval courts who applied drops of nightshade extract to their eyes to dilate the pupils, a look considered fashionable at the time.  The hallucinogenic nightshade induced visions and a feeling of flying, forever associating it with witchcraft.  Old German folklore reveals witches used nightshade to conjure up werewolves.Interestingly, the German name for tomato translates to wolf peach.  And in the 18th century, Carl Linnaeus, noting German legend, named the tomato Lycopersicon esculentum meaning edible wolf peach. 

At one time tomatoes were thought to be poisonous.Although the tomato circulated widely throughout Europe (as an ornamental plant from the New World), suspicion continued and its use in European cuisine evolved slowly over a period two hundred years. The yellow cerasiforme (original stock) that crossed the Atlantic into Europe with Spanish explorers continued to be hybridized into red and orange cultivars by 1623 and extensive hybridization continued in Europe during the 18th and 19th centuries.  The first cookbook to mention tomatoes was published in Naples Italy in 1692.  By 1752 English cooks used tomatoes in the flavoring of soups, and in 1758 a tomato recipe appeared in The Art of Cookery by Hannah Glass. 

Tomatoes only turn red when ripe.Still, the tomato remained under suspicion when it returned to North America with colonists in the mid 1700s.   Thomas Jefferson served tomatoes and French fries at his table in the 1780s.  In 1820, Colonel Robert Gibbon Johnson announced that at noon on September 26, he would eat a bushel of tomatoes in front of the Boston courthouse.  Spectators turned out to watch the poor man die, yet they were shocked when he lived. By 1858 a seed merchant named Buist wrote this about the tomato, “There is no vegetable on the catalog that has obtained such popularity in so short a period.“  In 1863, 23 cultivars were listed in the catalog – among them an heirloom tomato named ‘Trophy,’ the first modern-looking, large red, smooth-skinned variety.  By 1880 nearly two hundred cultivars had been named, although a study at Michigan Agricultural College in the late 1880s concluded of 171 cultivars only 61 were truly from different lines. 

Names of heirloom tomatoes have continued to reflect their own history: ‘Polish’ is said to have been smuggled into the US on the back of a postage stamp in the late 1800s; ‘First Pick’ was  grown by generations of the Baptiste family in Reims, France; ‘Besser’ came from Freiburg Germany; ‘Amish Paste’ has been cultivated in Pennsylvania since 1870; ‘Jeff Davis’ a cultivar from Alabama honored the Confederacy; and ‘Ace’ was introduced by the Campbell Soup Company in 1953, to name only a few.

Nutrition and Medical News

Lycopene found in tomatoes is being studied as a potent carotenoid (anti-oxidant) a molecule, which protects against cancer-causing free radicals.  Many studies confirm people who eat large amounts of tomatoes experience a reduced risk of cancer.  Tomato breeders at the University of Florida are producing high lycopene cultivars found in L. pimpinellifolium (currant tomato) containing 40 times more lycopene than domesticated tomatoes.  Hybrids between the two are relatively simple to achieve and will likely become a new tomato hybrid trait.  Tomatoes rank 16th among all fruits and vegetables as a source of vitamin A, 13th in vitamin C, with significant amounts of lycopene, beta-carotene, magnesium, niacin, iron, phosphorus, potassium, riboflavin, folacin, sodium, and thiamine. A medium tomato has 25 calories. 

Linda Durrant, Portage Co. MG

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