 |
| Do check out Cultivariable, a great site for everything potato, including buying seeds. |
Yesterday, on Facebook, Discover Magazine reposted an archived article from 2021 on Solanum jamesii, or the Indian potato, now renamed the Four Corners “potato,” which renewed my interest. But the somewhat updated article compared it to domestic potatoes because it produces tubers. I thought to myself: hundreds of others solanum species have tubers too.
However, the Four Corners potato, Solanum jamesii, is not what we think of as the ubiquitous potato. It's related to, but not the same as the garden potato, Solanum tuberosum, domesticated in the Andes 8,000 to 10,000 years ago.
I let my fingers do the Googling, and found that what are called Apache and Navajo potatoes were hybrid varieties of the domestic potato. A dead end. Back in the summer of 2017, potato farmer /poet Art Goodtimes piqued my curiosity about Solanum jamesii which led to a spirited discussion about the origin and nomenclature of potatoes. And researching "Indian potatoes" led me to another order of plant altogether, an aquatic species related to taro root, Sagittaria latifolia, or duck potato. If it walks like a duck... What quackery!
 |
| Astonishing diversity of Incan potatoes in CIP International Potato Center's seed bank. |
In fact, the entire Solanaceae family is undergoing genetic reconstruction. Solanaceae is a huge family, there are over 3000 to 4000 species worldwide. And solanum includes a whopping 1500 genera: potatoes, tomatoes, peppers, eggplant, tobacco, datura, and petunias, to name a few. They’re all members of the nightshade family.
I realize that it’s a handy linguistic shortcut to call this wild potato cousin a "potato," because it’s so much easier to say potato family instead of saying the nightshade family. Old habits die hard. And then there’s the toxic baggage attached to the word nightshade. Think Atropa Belladonna and deadly atropine. How about an expansionist mindset, with a new name, instead of a reductionist one handcuffed by the tyranny of simile?
The Diné word for the potato is Nimási. Maybe we should call the Four Corners “potato” that. But then we’d also have to include the Apache, Hopi, Kawaik, Southern Paiute, Tewa, Zia and Zuni names, etc., not to mention the Ancestral Pueblo (Anasazi) names. So maybe calling it the Four Corners “wild potato” is a far better name. Otherwise we’ll have hordes of eco-nuts going afield to nosh on them thinking they’re benign.
For the record, botanists insist that pretty much all wild potato species are not safe to eat, other than in small amounts, due to their high glycoalkaloid content. Also, Solanum jamesii is not native to California, which means it was introduced from somewhere else. But where?
Wiki spells it out: “Solanum jamesii is a species of nightshade. Its range includes the southern United States. All parts of the plant, and especially the fruit, are toxic, containing solanine when it matures. Immature tuber roots are edible.” But they’re the size of grapes, so how do you know if they’re immature? They tell off-color jokes?
It turns out that Solanum jamesii is not the only “wild potato” in the old pueblo. One or two other southwest wild potato species, depending upon how you count your potatoes, are Solanum stoloniferum aka Solanum fendleri, or Fendler’s horsenettle—genetically speaking, they are variants of one species, the controversy rages on. Horsenettles are generally not called potatoes, BTW.
I plowed through a lengthy list of solanum section of Petota, and found that Solanum commersonii is resistant to root rot and nematodes. Solanum demissum, Solanum pinnatisectum, and Solanum bulbocastanum, an ornamental nightshade, are resistant to the potato blight, and "has been used to genetically engineer resistance into the cultivated varieties of potatoes around the world." —Wiki
And like most solanum species, the Four Corners “potato,” Solanum jamesii, prefers to grow in disturbed soil—which suggests to ecologist Bruce Pavlik and his wife, Lisbeth Louderback, who is an archaeology curator at the Natural History Museum of Utah, that this wild potato may have been domesticated as early as 11,000 years ago. I'm not so sure about that. It’s not like hybridizing teosinte.
Escalante Valley was once referred to as Potato Valley. Pavlik and Louderback have been genome sequencing the wild potatoes near the pueblos for signs of domestication—they're looking for a genetic bottleneck. Ok, so I have trouble with their advanced reference date, as it predates Andean domestication, and, besides, it was the end of the Ice Age. Potatoes hate frost. (In the 2017 Salt Lake Tribune article, Louderback, in her doctoral thesis, quoted 10,000 to 11,000 years. See also University of Utah News).
Everything about the Four Corners “potato” is toxic—like many members of the nightshade family—unless you boil or eat the immature tubers with gobs of white clay called gleesh’ (think Kaopectate) to counteract the toxins—so it’s different than the domesticated South American potatoes of Bolivia and Peru. It’s more of a dangerous wild potato cousin with a deadly kick.
It also turns out that the Four Corners “potato” toxins are also different than those found in domestic potatoes. The toxin is the same found in tomatoes. So maybe cavalierly calling it a potato just because it has a tiny tuber the size of a grape, is a bit premature. Maybe call it tomapotatl?
It also turns out that the Four Corners “potato” toxins are also different than those found in domestic potatoes. The toxin is the same found in tomatoes. So maybe cavalierly calling it a potato just because it has a tiny tuber the size of a grape, is a bit premature. Maybe call it tomapotatl?
Oddly enough, Santa Rosa, horticulturalist Luther, Burbank, the man who invented the Burbank, or russet potato, aka the Idaho potato, did developed an edible white potato-tomato berry called a pomato. But, unlike the ill-fated Wonderberry, also a nightshade, which resembled a huckleberry, victim of a smear campaign touting its toxicity, the pomato didn’t breed true, so he gave it up. But in 1934, an Australian successfully bred a pomato. Many flowering ornamental solanum produce tubers too, but noshing on them could be a one-way ticket to paradise—no matter how you roll the old snake-eyes.
I realize that it’s a handy linguistic shortcut to call this wild potato cousin a "potato," because it’s so much easier to say potato family instead of saying the nightshade family. Old habits die hard. And then there’s the toxic baggage attached to the word nightshade. Think Atropa Belladonna and deadly atropine. How about an expansionist mindset, with a new name, instead of a reductionist one handcuffed by the tyranny of simile?
The Diné word for the potato is Nimási. Maybe we should call the Four Corners “potato” that. But then we’d also have to include the Apache, Hopi, Kawaik, Southern Paiute, Tewa, Zia and Zuni names, etc., not to mention the Ancestral Pueblo (Anasazi) names. So maybe calling it the Four Corners “wild potato” is a far better name. Otherwise we’ll have hordes of eco-nuts going afield to nosh on them thinking they’re benign.
For the record, botanists insist that pretty much all wild potato species are not safe to eat, other than in small amounts, due to their high glycoalkaloid content. Also, Solanum jamesii is not native to California, which means it was introduced from somewhere else. But where?
Wiki spells it out: “Solanum jamesii is a species of nightshade. Its range includes the southern United States. All parts of the plant, and especially the fruit, are toxic, containing solanine when it matures. Immature tuber roots are edible.” But they’re the size of grapes, so how do you know if they’re immature? They tell off-color jokes?
It turns out that Solanum jamesii is not the only “wild potato” in the old pueblo. One or two other southwest wild potato species, depending upon how you count your potatoes, are Solanum stoloniferum aka Solanum fendleri, or Fendler’s horsenettle—genetically speaking, they are variants of one species, the controversy rages on. Horsenettles are generally not called potatoes, BTW.
Because of the toxicity, they are often considered famine foods. And people sometimes eat the ripe berries, or ground cherries. And since they vary in toxicity, you never know which ones will be real stinkers I’m not willing to be the guinea pig.
Let’s talk toxicity. “The primary glycoalkaloid in this Solanum jamesii species is tomatine, unlike the domesticated potato, in which the primary glycoalkaloids are solanine and chaconine." And there’s also a smidgeon of the nicotine alkaloid too! Tomatine puts this species firmly in the tomato camp—name your poison. Put that in your pipe and smoke it.
Let’s talk toxicity. “The primary glycoalkaloid in this Solanum jamesii species is tomatine, unlike the domesticated potato, in which the primary glycoalkaloids are solanine and chaconine." And there’s also a smidgeon of the nicotine alkaloid too! Tomatine puts this species firmly in the tomato camp—name your poison. Put that in your pipe and smoke it.
 |
| Wow! Potato blossoms. Cultivariable is a great site for everything potato, and then some. |
The question begs, how closely related is the Four Corners “wild potato” to South American potatoes? As James Dinneen in The ancient potato of the future, quipped, DNA-wise, “The Four Corners potato, Solanum jamesii, is related to the common potato in somewhat the same way coyotes are related to dogs.” Both are canines and can interbreed. But the domestic dog is descended from wolves. You’re barking up the wrong tree if you think they're siblings.
Why does any of this matter? Because, Dear One, genetic diversity. Wild species carry a wide range of unusual survival traits. Take the Irish potato famine—had there been a way to introduce more resilient genes into the potato monoculture against the potato blight (Phytophthora infestans), then one million people might not have needlessly died. Or immigrated.
The USDA is interested in the Four Corners potato’s astonishing 8-year shelf life, resistance to disease, and to drought. Climate change is affecting domestic monoculture potatoes, which is the world's third largest important food crop. Potatoes need specific heat requirements and 12-hours of daylight in order to reproduce. Not all nightshades reproduce by seed, some spread via tubers, or reroot via creeping stolons.
Why does any of this matter? Because, Dear One, genetic diversity. Wild species carry a wide range of unusual survival traits. Take the Irish potato famine—had there been a way to introduce more resilient genes into the potato monoculture against the potato blight (Phytophthora infestans), then one million people might not have needlessly died. Or immigrated.
The USDA is interested in the Four Corners potato’s astonishing 8-year shelf life, resistance to disease, and to drought. Climate change is affecting domestic monoculture potatoes, which is the world's third largest important food crop. Potatoes need specific heat requirements and 12-hours of daylight in order to reproduce. Not all nightshades reproduce by seed, some spread via tubers, or reroot via creeping stolons.
I plowed through a lengthy list of solanum section of Petota, and found that Solanum commersonii is resistant to root rot and nematodes. Solanum demissum, Solanum pinnatisectum, and Solanum bulbocastanum, an ornamental nightshade, are resistant to the potato blight, and "has been used to genetically engineer resistance into the cultivated varieties of potatoes around the world." —Wiki
Genetic traits from tough wild potato species can be hybridized into our domestic potatoes. And before you go off the deep end about genetic modification, every plant we consume has been genetically modified—from aubergine to zucchini. Especially corn and broccoli. Besides, the voodoo magic of crossbreeding solanum species is far better than sticking pins into a potato.
Where is Mr. Potatohead when you need him?
———————————-
Note bene: My reference article is from Discover Magazine. I think I might not have been so semantically triggered if the article had just stuck with the term, wild potato or nightshade family vs lumping them in together as being the same as domestic potatoes. In this case, a simile could kill you if you ate too many wild potatoes.
“In 2010, University of Utah anthropologist and archaeologist Lisbeth Louderback found what looked like potato starch on ancient stone tools from a dig site in Escalante, Utah. In 2013, a particularly good monsoon year, Bruce Pavlik, Director of Conservation at the University of Utah's Red Butte Garden, recognized a tuber growing wild the same site, and the team was able to identify the starch. It was from, also called the Four Corners potato, a potato native to the Four Corners area of the Southwestern United States. Though the potato grows wild in the area, this was the first time it was found at the site of a prehistoric settlement – making it the earliest evidence of potato use in North America, dating back almost 11,000 years.” —Discover Magazine
———————————-
Note bene: My reference article is from Discover Magazine. I think I might not have been so semantically triggered if the article had just stuck with the term, wild potato or nightshade family vs lumping them in together as being the same as domestic potatoes. In this case, a simile could kill you if you ate too many wild potatoes.
“In 2010, University of Utah anthropologist and archaeologist Lisbeth Louderback found what looked like potato starch on ancient stone tools from a dig site in Escalante, Utah. In 2013, a particularly good monsoon year, Bruce Pavlik, Director of Conservation at the University of Utah's Red Butte Garden, recognized a tuber growing wild the same site, and the team was able to identify the starch. It was from, also called the Four Corners potato, a potato native to the Four Corners area of the Southwestern United States. Though the potato grows wild in the area, this was the first time it was found at the site of a prehistoric settlement – making it the earliest evidence of potato use in North America, dating back almost 11,000 years.” —Discover Magazine
Notes on plant domestication:
Evolution of Crop Plants: The origins of agriculture and the domestication of plants
Evolution of Crop Plants: The origins of agriculture and the domestication of plants
My foodie blogposts
Defiant Fruitcakes
Recipe for bone broth
Tea vs Chai—if by Land, or Sea
Tapping trees: a soggy story
Arbutus, Madroño, or a Strawberry Tree by any other name
Irish salmon
Naked man in a filbert bush, and spotted dick
Shrove Tuesday PancakesHuckleberriesTea vs Chai—if by Land, or Sea
Tapping trees: a soggy story
Arbutus, Madroño, or a Strawberry Tree by any other name
Irish salmon
Naked man in a filbert bush, and spotted dick
No comments:
Post a Comment