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Mendel in the Kitchen: A Scientist's View of Genetically Modified Food
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Mendel in the Kitchen: A Scientist's View of Genetically Modified Food [Format Kindle]

Nina V. Fedoroff , Nancy Marie Brown

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Présentation de l'éditeur

While European restaurants race to footnote menus, reassuring concerned gourmands that no genetically modified ingredients were used in the preparation of their food, starving populations around the world eagerly await the next harvest of scientifically improved crops. Mendel in the Kitchen provides a clear and balanced picture of this tangled, tricky (and very timely) topic.

Any farmer you talk to could tell you that we’ve been playing with the genetic makeup of our food for millennia, carefully coaxing nature to do our bidding. The practice officially dates back to Gregor Mendel – who was not a renowned scientist, but a 19th century Augustinian monk. Mendel spent many hours toiling in his garden, testing and cultivating more than 28,000 pea plants, selectively determining very specific characteristics of the peas that were produced, ultimately giving birth to the idea of heredity – and the now very common practice of artificially modifying our food.

But as science takes the helm, steering common field practices into the laboratory, the world is now keenly aware of how adept we have become at tinkering with nature – which in turn has produced a variety of questions. Are genetically modified foods really safe? Will the foods ultimately make us sick, perhaps in ways we can’t even imagine? Isn’t it genuinely dangerous to change the nature of nature itself?

Nina Fedoroff, a leading geneticist and recognized expert in biotechnology, answers these questions, and more. Addressing the fear and mistrust that is rapidly spreading, Federoff and her co-author, science writer Nancy Brown, weave a narrative rich in history, technology, and science to dispel myths and misunderstandings.

In the end, Fedoroff arues, plant biotechnology can help us to become better stewards of the earth while permitting us to feed ourselves and generations of children to come. Indeed, this new approach to agriculture holds the promise of being the most environmentally conservative way to increase our food supply.

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  • Format : Format Kindle
  • Taille du fichier : 1416 KB
  • Nombre de pages de l'édition imprimée : 384 pages
  • Editeur : Joseph Henry Press; Édition : 1 (30 septembre 2004)
  • Vendu par : Amazon Media EU S.à r.l.
  • Langue : Anglais
  • ASIN: B002U58AU0
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24 internautes sur 24 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 Well-informed, well-written, unbiased review of GM-foods 24 avril 2009
Par Ronald L. Seale - Publié sur
Format:Broché|Achat vérifié
First, disclosures. I am a retired molecular biologist who went to culinary school after retirement, so I have a foot in both worlds and feel qualified to evaluate the evidence from both standpoints. I wrote a term paper on GMO's, in large part to inform and clarify my own thinking about controversies over the new agricultural technologies, both plant and animal. This book is about plant GMO technology. I came to the same basic conclusions as Dr. Federoff regarding the validity of GMO criticisms, although a slightly different reason regarding the basis of popular discontent.

Nina Federoff is very highly respected in the scientific community; she has been elected to the National Academy of Sciences, one of the highest levels of scientific accomplishment. This is a book brimming with accurate information, a history of scientific developments and analysis of the relevance of current arguments and opinions regarding how food is developed and produced. The evidence discussed is referenced for verification or for pursuit of further interest.

I completely disagree with reviewers who complain that the book presents a biased argument in favor of genetic modification.

If the evidence on GMO's does not support much popular opinion, it is high time the record be set straight, and the campaign of misinformation (e.g., by Greenpeace) be challenged. For instance, the facts presented indicate that organically grown food is no more nutritious or flavorful than conventionally grown crops, and the naturally occurring pesticides produced by the plants themselves are 1500 times greater than artificial pesticide residues. Contrast that with the prices charged for organic produce.

What is especially appealing about this book is the presentation of the body of evidence pertaining to a subject, e.g., 'whether or not GMO production is natural", and letting the reader decide for him/herself after reviewing the various methods of plant breeding and modifications past and present. The answer is not as straightforward as you might think.

Another valuable insight is the history of how the techniques of molecular genetic modifications developed and resulted in regulation by three government agencies, while 'conventional' crop development using chemical and radiation-induced mutations is completely unregulated.

Until now, I was unaware of the contribution of GMO productivity to the fate of the planet. It is this technology that will provide sufficient food to support the continuing growth of humankind without felling the remaining forests. If organic agriculture were used today with its less efficient yields, let alone in the future, the entire arable acreage of the planet would be required.

I could go on, but I will end by giving this book the highest recommendation. For the lay reader, there are scientific explanations that may be discouraging at times. If so, just skip them and continue. The game is worth the candle.
37 internautes sur 45 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 Worth the effort! 8 avril 2005
Par ra2sky - Publié sur
First off, I am a lay reader who, prior to reading this book, was on the fence regarding genetically modified (GM) food. I had heard some scary stuff from friends and in the media but I wanted more information. After reading this book I feel reasonably well versed in GM history/opinion/issues, although as other reviewers noted, this book is definitely biased in favor of GM. To have a truly informed opinion a person ought to also read an anti GM book. That said, here are my key learnings:

(1) If a person chooses to be anti GM, in order to be consistent then there are many more foods to avoid than you might think. The definition of GM is subject to wide interpretation. Truly being opposed to any messing around with a plant's DNA would mean that you should not consume Canola, Tritricale, the majority of domestic Soy and Corn, and a LOT (!!) of other foods including many foods featured in your local health food store.

(2) As noted above the definition of GM is nebulous. Where is the line between the generally accepted cross-breeding of plants (think Luther Burbank) and the "scary" genetic modification done in a lab under a more controlled setting?

(3) The media has generated a lot of anti GM buzz and fear. Actually looking at the facts is, as usual, a lot more complicated. It takes some heavy reading, through a book such as this one, to be able to interpret the science for oneself. Most people are more content to read a quick article in a magazine and then end up with a much less informed (and probably anti GM) opinion.

(4) There are undeniable benefits of GM. Less chemical pesticide needs to be applied to some GM crops. GM can introduce additional nutrients to foods. GM has saved some plant species from going extinct. These and other benefits must be weighed against any downsides of GM.

This book also includes an interesting discussion on Organic foods, in particular debunking the public's tendency to romanticize organic farming. Think Organic is Farmer Jed working a small farm with his own hands? That's what the marketers want you to believe...

In conclusion I recommend this book to anyone who wants to formulate an opinion on GM and is willing to work through the science and history thereof. Even if you happily anti GM, this book is worth reading so that you can be informed about the other side. As for myself, after reading through the facts, I'm OK with feeding GM foods to myself and my family.
17 internautes sur 20 ont trouvé ce commentaire utile 
4.0 étoiles sur 5 All about the pros of GMF; not as much about the debate 13 janvier 2005
Par Carol Walker - Publié sur
This is an excellent book that explains, in great detail, why so much of the anti-GM food movement is scientifically misguided. It also makes the point that far from being an evil that will irrevocably damage the environment, biotechnology can be an important tool for more ecologically sound soil management, and for reducing the amount of land worldwide that must be used for farming. Most importantly, it describes the role bioengineering has to play in feeding people who will otherwise be malnourished or starving.

A warning I would offer to other readers is that, as a layperson with little formal science background, I found the going tough in spots. The section on how polymerase chain reaction works was particularly hard going, although the authors are probably to be praised for trying to make the process clear. Some concepts are extremely complicated, even in the hands of good authors.

The one disappointing aspect of this book is its one-sided approach. It is not polemical; on the contrary, the prose is always calm and reasoned, and the authors don't flinch when the story they are telling necessitates providing evidence that could be taken for anti-biotech arguments. However, they make little to no effort to summarize other points of view. (One gets the feeling that they believe, if you really understand the science, there IS no other valid point of view - this would explain why they have trouble articulating opposing viewpoints.)

This book doesn't represent itself as "balanced" -- it makes it clear that it is a treatise in favor of GMF. That's fine. But I guess I would have preferred to read a book that let me hear a little bit about what the other side was saying. As convincing as their arguments seem, I'd like to study all sides of an argument before making up my own mind. This book alone doesn't permit one to do that - you'll have to keep reading elsewhere if you want to hear what anti-biotech forces have to say. But by all means, if you are prepared to read several books about GMF with an open mind, make this book one of them.
3 internautes sur 3 ont trouvé ce commentaire utile 
4.0 étoiles sur 5 Are you anti-GMO? Read this. 4 mars 2012
Par M Barnes - Publié sur
For the most part, I appreciated the authors of this book taking a good, scientific look into the GMO - or, better, transgenic organism - debate.

-The authors list and dispute some of the most common arguments against transgenic crops.
-The authors discuss other varieties of genetic modification, effectively arguing against the 'GMO' terminology.
-The authors discuss a bit about the politics and financial aspects of creating transgenics.
-The authors take you through the science, step by step.

-The authors sometimes get a little snarky about the other side of the debate, detracting from the professional feel.
-The authors start talking about sustainable agriculture towards the end of the book, when they should have just kept talking about their specialty: plant genetics. They don't do a very good job, and say a lot of misleading things.
-This book was published in 2004 - as of 2011, a bit of panic was felt as BT resistance in insects was found to have arisen across a wide geographical area. This book spends a while talking about how the industry will prevent that from happening.

Overall, I think there's a lot of misinformation floating around about transgenic crops on both sides of the debate. I've shared this book with several friends who, like me, were 'anti-GMO.' I still dislike Monsanto, but this book helped change my viewpoint: the rhetoric should be about company (and governmental) policy, not about the scientific process of creating a transgenic crop.
6 internautes sur 7 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 The Only Book You'll Need on Plant Biotech 22 février 2010
Par Jay Lehr - Publié sur
Format:Broché|Achat vérifié
This book is among the most meticulously documented and well-written science texts I have ever had the pleasure of reading. While I do not presume to have read every book produced thus far on modern biotechnology or plant genetics, I will nevertheless wager that no one has done it better.

In some ways it is four books in one. The authors tackle the ancient history of biotechnology, predating even Gregor Mendel and his famous garden pea studies in the yard of his monastery in the 1860s. But they also recount Mendel's interest in the genetics of bees and mice, which few ever learn about.

The authors then follow the modern genomic advances by Crick and Watson, Cohen and Boyer, and all who came before, in between, and thereafter. They not only explain the moment-by-moment conceptual and laboratory development of these advances, but make every effort to teach the science along the way.

The latter part of the book reviews the political and sociological aspects of biotechnology in the modern world, offering unbiased, objective details before drawing the only possible conclusions. Simply put: Genetically modified plants are the answer to the world's potential food supply problems; organic agriculture as it is presently defined cannot contribute significantly to society's needs.

Genetic Engineering's Long History

Genetic engineering is not new. For nearly a century, scientists have been cloning pink grapefruit from a mutant strain discovered on a tree in Florida in 1907. Scientists developed the Red Rio grapefruit in 1968 by exposing grapefruit buds to thermal neutron radiation at Brookhaven National Laboratory.

The most significant changes in grains and advances in knowledge about crop genomes occurred many years ago. When we eat wheat, we consume varieties mutated by nuclear radiation. It is not known what happened to the genomes, but we have been eating this wheat safely for decades.

Today, with more extensive knowledge and new applications of the technologies resulting from genetic engineering, our scientists have more control over the genetic changes introduced, and their work is more precise than ever before.

Fedoroff and Brown methodically trace the development of nearly every major grain consumed by society today, providing details of their DNA mutations. They also trace the need for fertilizer and its early applications in the nineteenth century. For flower lovers, the complete story of Luther Burbank and his plant grafting techniques is noteworthy.

Roots of Green Revolution

Many readers will especially enjoy the full story of Norman Borlaug as it plays out on the pages of this book. Many people are aware that he won the Nobel Prize in 1971 for launching the Green Revolution, but few of us know the complete and wonderful details of his education, research, and teachings. And Borlaug's story is not yet complete: He still works full-time in this field at Texas A&M University, traveling the world more than 150 days a year ... at age 90.

A brief summary of Borlaug's Nobel Prize work is recorded in the book as follows:

"As Borlaug explained in the Nobel lecture, 'Through a series of crosses and re-crosses (of wheat) begun in 1954, dwarfness was incorporated into the superior, new-combination Mexican types, finally giving rise to a group, or so-called dwarf Mexican wheat varieties.' By changing the plant's architecture to emphasize a short, sturdy stalk, the dwarfness trait allowed the wheat to produce heavier seed heads given enough water and nitrogen without falling over in a breeze. In addition, the plants were not affected by length of day (and so could grow at a range of latitudes) and were highly resistant to wheat rusts. The result, in Borlaug's terms, was a 'yield blast-off.' A few seasons after the new variety was introduced Mexico became self-sufficient in wheat. When introduced into Pakistan and India, the wheat had the same yield-boosting effects."

Explanation of Genetics

Genetics is by no means an easy science to understand, and I will not say this book makes a simple primer that is easily understood. But it does make significant breakthroughs in genetics education. For me this was one such example:

"Genes can change, they can duplicate and delete, and genomes scramble. It is increasingly evident that what genes do depends more on what they are than where they are--although both a gene's immediate neighbors and its general genomic neighborhood can influence its expression. But evolution takes a long time--like the movement of tectonic plates. The evolution of a plant is measured in millions of years, not in the months it takes to grow a crop of corn."

Debunking Biotech Critics

The authors analyze in more detail than is warranted all the major technical charges made against biotech by its many detractors. With great precision they defeat each false claim without bias, never calling the opponents what this writer is inclined to label them.

No one has ever scientifically refuted the anti-biotech crowd as well as Fedoroff and Brown do in this book. Their patience in doing so is amazing.

Safety of Biotech Food

If you are interested in biotechnology and genetically modified foods, you have most likely read the stories of StarLink corn and monarch butterflies. But I promise you that you have never read the complete story of either of these.

StarLink corn is a biotech corn that was approved only for animal feed when some of it found its way into taco shells. Activist groups duped the media into reporting that this was causing widespread allergic reactions in people. Later, the Centers for Disease Control and Prevention (CDC) released a study showing that StarLink corn produced absolutely no adverse effects on people who had consumed it.

Similarly, activist groups duped the media into reporting that biotech corn fields were causing widespread monarch butterfly deaths. Later, EPA concluded that biotech corn poses very little risk to monarch butterflies.

The retelling of these fraud-filled scandals on the pages of Mendel in the Kitchen is alone worth the price of this book. Along the way you will learn precisely how grains that contain a gene that produces the protective Bacillus thuringiensis (Bt) bacterium work their damage upon unwanted insects ... and also why they cannot be harmful to man and other animals.

Fedoroff and Brown also do a great job explaining all the precautions that have been taken by the government and the biotech industry to ensure the pests they target with Bt seeds do not become resistant to the toxins generated by the plant. This concern is continually thrown up by the anti-biotech crowd with no scientific support.

Predominance of Natural Pesticides

The book's chapter on organic food, titled "The Organic Rule," is the best primer on organic agriculture that you will ever find. Again the authors exhibit a complete lack of bias. Until the final pages of the chapter, one would have no idea which, if any, side of the organic food issue the authors lean toward.

But in the end they evaluate their own data and make many very strong and persuasive statements regarding the inability of organic farming to supply the needs of a hungry world.

In this chapter they also summarize the many contributions of Bruce Ames in eliminating the concerns over trace amounts of agricultural pesticides in our food. More than 99 percent of the chemicals people eat are natural. Coffee, for example, contains more than a thousand different chemicals. Twenty-eight of those have been tested in rodent bioassays, and 19 have been found to be carcinogenic in mega doses fed to rats and mice.

Plants produce many natural pesticides. Seventy-one of these have been tested, and 37 are cancinogenic in mega quantities to some rodents. Ames proves in a variety of ways that these high-dose rodent bioassays have no relevance to the health of human beings.

Ames estimates Americans eat somewhere between 5,000 and 10,000 natural pesticides every day, ingesting 1,500 milligrams of such chemicals per person. That is about 10,000 times more than the 0.09 milligrams of synthetic pesticide they eat in conventionally grown food each day.

Ames concludes, "There is no convincing evidence that synthetic chemical pollutants are important as a cause of human cancer." He states emphatically, "if reducing synthetic pesticides makes fruits and vegetables more expensive, thereby decreasing consumption, then the cancer rate will increase, especially for the poor."

Organic Farming's Costs

People who argue for organic farming as a world-wide solution to hunger often overlook three points: organic farming makes food more expensive, requires that more land be put under cultivation, and requires that more hard, manual labor be performed to harvest the crops.

Fedoroff documents this very well. When explaining the organic growth of potatoes in Bolivia she quotes Per Pinstrup-Andersen, former director general of the International Food Policy Research Institute (IFPRI):

"To have enough manure, the organic farmers must either reduce the size of their potato fields or put more land to the plow. When the cost of the additional land is factored into the study, the figures for yield per hectare do not look so good. If we set aside the ecological risks of bringing more land under cultivation, organic farming may be a perfectly acceptable solution in regions with unused land that can be cultivated without damaging the environment." But, Fedoroff adds, "Such regions are becoming scarce."

Ebbe Schioler, a colleague of Pinstrup-Andersen at IFPRI, described the work environment of organic rice growers in Africa: "The weeds they faced were stout thistles, coarse grasses, large thick-leaved plants with tough stalks, and little bushes that produce powerful, deep-reaching root systems. The farmers use no herbicides. Everything is done by hand and hoe, and even though the children do their bit, it is still touch and go. It takes 40 days of sweating and straining each year to keep just one hectare of land weed-free."

Fedoroff concludes her chapter on organic farming as follows: "Suggestions that organic farming is appropriate for countries with high population pressure and limited arable land and water supplies sounds suspiciously like Marie Antoinette's famous statement, 'Let them eat cake.' Or as Peter Raven, head of the Missouri Botanical Garden, has noted, 'Organic agriculture is essentially what is practiced in sub-Saharan Africa today, and half of the people are starving, so it is clear that more [than organic techniques] is needed.'"

"Sustainable Agriculture"

While "sustainable agriculture" is a term that hides its intention to promote organic farming, Mendel in the Kitchen tells the real facts about what we would logically conclude to be meant by the term--namely, using land wisely to feed the world.

Economist Indur Goklany has calculated that were we still using 1961 farm technology, we would need to put 82 percent of the Earth's land surface under cultivation ... rather than the 38 percent we actually use. Borlaug calculates that the Green Revolution has saved 20 million square miles of wilderness since 1950. Dennis Avery of The Hudson Institute has pointed out that the world's 16 million square miles of forest would all have to have been destroyed without modern agriculture.

The authors of Mendel in the Kitchen, in an effort to promote real sustainable agriculture, offer an excellent tutorial on reduced tillage and no-till farming. They point out that continuous cultivation has been a misguided bad habit driven by the desire to have pretty fields, the need to eliminate weeds before effective herbicides were available, and a lack of understanding of soil health.

Fedoroff correctly explains the basic reasons to reduce tillage on cropland: reduce runoff, increase soil moisture, eliminate soil erosion, improve soil tilth, increase carbon content, improve air quality, improve surface water quality, and increase wildlife habitat ... not to mention the saving on labor, fuel, and wear and tear on machinery.

Possible Future Breakthroughs

In the closing chapter, "Food For Thought," the authors open with a poignant quote from Dr. Florence Wambugu of the Kenyan Agricultural Research Institute. She said, "You people in the developed world are certainly free to debate the merits of genetically modified foods, but can we please eat first?"

In this chapter, readers are given more reasons for optimism about the future impacts of plant biotechnology than one could possibly imagine. Virtually all of the impediments to expanding crop yields around the world are linked to insufficient nitrogen fertilizer, inability to fix adequate quantities of carbon from the atmosphere while maintaining sufficient moisture uptake, or the inability to grow in soils high in salt or aluminum. These problems must be overcome if farmers' yields are to double or perhaps even triple to meet the demands of a human population that will reach 8 or 9 billion within 50 years and demand more and better food.

It seems unlikely the future holds another simple breakthrough, like the synergy between dwarfing genes and fertilizer that made the Green Revolution possible. But a breakthrough that enhances the use of nitrogen or the efficiency of photosynthesis or the use of soils previously toxic to growth could push yields up dramatically.

Mendel in the Kitchen may ultimately hasten the day of such breakthroughs. It could be used as a college textbook in biotechnology for a variety of courses focusing on science, history, and politics. If you have an interest in any one of these areas, the book is a wonderful read.


Jay Lehr, Ph.D. ([...]) is science director for The Heartland Institute.
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