SEATTLE — Get ready for a food fight.
When Washington voters decide Initiative 522 this fall, they will do more than determine whether to label food that contains genetically engineered ingredients.
They also will take sides in a national battle that has raged for two decades about the benefits and safety of manipulating the DNA of food — something many people view suspiciously but do not really understand.
"There's a lot of uneasiness among consumers on the topic," said Amy Sousa, managing consultant at the consumer research firm Hartman Group in Bellevue. "They don't like the sound of it but have a difficult time articulating exactly why."
GMO stands for genetically modified organism. Technically, any plant or animal that has been bred for particular characteristics is genetically modified. The difference with so-called GMOs is that their DNA is directly manipulated by inserting or modifying particular genes. Some call such targeted work "genetic engineering."
The first genetically engineered food to appear on grocery shelves was a tomato that failed because consumers didn't buy it.
By contrast, the handful of genetically engineered crops that have been widely adopted by American agriculture — corn, sugar beets, soybeans, canola — are designed to appeal to growers by withstanding certain herbicides or creating their own internal pesticides.
Many of these genetically engineered seeds are owned by chemical companies such as Monsanto and Bayer — which has fueled some people's mistrust.
GMO advocates, however, also include powerful nonbusiness players, such as the Gates Foundation, that say the technology can be used to enhance nutrition and other qualities desired by consumers.
To Neal Carter, founder of a British Columbia company seeking regulatory approval for genetically engineered apples that don't brown, GMOs conceived to appeal to consumers constitute a "second wave."
"We're going to see the next generation of biotechnology," he said.
What he calls his "arctic" apples are a start. Carter grows them at test sites in Washington and New York states but will not disclose specific locations for fear anti-GMO activists could disrupt the work.
"It's a huge investment, and we can't afford to let folks know where we're doing this because of that kind of risk," he said. He wants to avoid the type of GMO crop sabotage that appears to have happened this summer in Oregon, where 6,500 genetically engineered sugar beets were uprooted.
Monsanto has said it also suspects sabotage in the discovery of genetically engineered wheat in Oregon during the spring, which prompted Japan to stop buying a popular Northwest wheat for two months. GMO wheat is not approved for commercial use, and it was found miles from where the company tested genetically engineered wheat almost a decade ago.
But the real war over GMOs is happening in the political arena.
The most recent skirmish took place last year in California, where the biotech industry and others spent $44 million to fight a labeling measure similar to I-522. Labeling supporters spent about $10 million.
The measure lost, but the idea of labeling GMOs appears to be gaining traction.
Maine and Connecticut recently passed labeling laws, although they are contingent upon other states participating. The grocery chain Trader Joe's said in December that its private-label products contain no GMOs, and Whole Foods said earlier this year that within five years it will require suppliers to label products with genetically engineered ingredients.
The Hartman Group advises clients, which regularly include major food companies such as Kraft Foods, General Mills, ConAgra Foods and Kellogg's, to discuss the matter openly.
"Trying to suppress labeling and skirt around the issue is not a sustainable approach, especially as more and more food retailers get on board with crafting their own position," Sousa said.
People who oppose GMOs want labeling because they say genetically engineered crops have not been studied or regulated enough to know whether they are harmful.
They also argue it would be hard to return to nonengineered crops if damage is discovered later. And they point to dozens of other countries, including Japan and those of the European Union, that ban or label genetically engineered food.
"We already have the right to know as Americans what the sugar and fat content is, whether flavors are artificial or natural, whether fish is wild or farmed, what country our fruit comes from -- and we have a right to know whether our food is genetically engineered," said Trudy Bialic, director of public affairs for PCC Natural Markets, which helped write I-522 and led signature-gathering for the measure. It garnered about 100,000 more signatures than were required.
Other authors were Washington wheat farmer Tom Stahl and lawyers from the nonprofit Center for Food Safety and a Washington, D.C., law firm that helped write the California measure.
Proponents say the changes made to food using genetic-engineering techniques are not that different from changes that occur when plants and animals are bred conventionally.
They also point out that every independent science group to look into the issue, including the National Academy of Sciences, has found no evidence of ill health effects. And, they add, millions of people have eaten genetically engineered food for 20 years.
"It's fine for people from rich, well-fed nations with productive farms to decline the use of GMOs. But they should not be allowed to impose their preferences on Africa," Bill Gates said in a 2011 speech.
Processed-food manufacturers oppose labeling because labels could hurt sales, said Dave Zepponi, president of the Northwest Food Processors Association.
Removing all genetically engineered ingredients to avoid labeling would create enormous expenses, both in tracking down GMO-free ingredients and in segregating GMO and GMO-free ingredients, he said.
"Most of our companies are or attempt to be GMO free, but the risk of having a small amount of genetically engineered material in the product is too great. They would have to put a label on it, which is probably going to hurt their sales," Zepponi said.
Although most food in the produce section is not genetically engineered, several major U.S. crops are — along with many processed foods.
More than 90 percent of soybeans, field corn and canola grown in the United States is genetically engineered. So is more than 80 percent of the sugar beets.
Those crops are turned into dozens of ingredients — cornstarch, soy lecithin, non-cane sugar — that are in processed foods.