September 26, 2008· Grow figure – Why is a banana shaped like that? · Country-of-origin food labeling begins next week · Nufarm reports harvesting a bumper crop of cash · Safety issues, economy take center stage at PMA · Andean countries seek quick trade deal with EU Grow figure – Why is a banana shaped like that?( Grocery-store tomatoes, on the other hand, can be monstrosities. Thousands of years of selective breeding and manipulation have created a cornucopia of tomato sizes, colors and shapes. Tomatoes can be as big as softballs or as small as grapes. They come in hues of green, yellow, red and orange, and in shapes even more diverse: spherical and oblong; pearlike, egglike and pepperlike; completely smooth or pointed at one end. “It's safe to say that humans have adapted every edible or usable fruit and vegetable,” said Martin Yanofsky, an associate professor of biology at the University of California San Diego who studies the development of flowers and fruits in higher plants. “We know we can create new, domesticated varieties that contain more of the qualities we desire, whether that's being bigger, juicier, higher-yielding or something else.” But while plant breeders, farmers and scientists know how to do things like build a juicier tomato or a plumper, purpler eggplant, they do not really know why fruits and vegetables are shaped the way they are. What is the difference between apples and oranges? Why is a banana shaped like a banana? The question might seem esoteric, suitable only for researchers with ovate-shaped heads. But the answer, if it can be fully formed, promises profound and widespread applications. Building a better tomato Earlier this year, Esther van der Knaap, a professor of horticulture and crop science, and
colleagues at Switched on, the so-called SUN gene (named after a variety of tomato called Sun-1642) produces Roma-type tomatoes, oval-shaped with a pointy end. When the gene is switched off or absent, tomatoes tend to be round. SUN is only the second gene linked to fruit shape. The
first, called OVATE, was discovered a few years earlier by Steven Tanksley, a “Tomatoes are the model in this emerging field of fruit morphology studies,” van der Knaap said. “We are trying to understand what kind of genes caused the enormous increase in fruit size and variation in fruit shape as tomatoes were domesticated,” she added. “Once we know all the genes that were selected during that process, we will be able to piece together how domestication shaped the tomato fruit – and gain a better understanding of what controls the shape of other very diverse crops, such as peppers, cucumbers and gourds.” If researchers more fully understand the genetic blueprints
shaping each fruit or vegetable, they can more effectively modify them, said
Charles H. Janson, the associate dean of biological
sciences at the “We're not talking about growing grapefruits as big as basketballs,” Janson said. “That would require fundamental changes to the whole plant, like stronger pedicels where the fruit is attached or maybe even where the fruit actually grows on the plant. These things may be possible in theory, but they're not likely to happen. “Whatever changes do occur would be subtler, intended to improve the fruit's appeal, nutritiousness, uses or availability.” One possibility would be tomatoes without seeds, said van der Knaap. “Or extremely elongated tomatoes shaped like cucumbers. These fruits would be very advantageous when preparing sliced tomatoes for hamburgers, as less ends would have to be thrown away.” Seed need For obvious reasons, it's difficult – perhaps impossible – to know exactly what the original forms of some fruits and vegetables were, particularly if the fruits and vegetables have a long history of domestication. Still, there do seem to be a few basic rules that shape all fruits and vegetables. “Fruit mostly serves to protect, nourish and disperse a plant's seeds, to help ensure propagation of the species,” said Yanofsky at UCSD. “A lot of shape is designed to emphasize seed dispersal. Things like pea pods, for example, are built with a crease along the seams to allow the pod to open and disperse the seeds. A tomato, on the other hand, falls to the ground to be eaten.” Shape is also determined by how a plant grows in general. Mature banana plants, for example, tend to be tall and upright, producing a similarly structured fruit bunch that grows and hangs from a central pseudostem. And like flowers, which frequently take shapes, colors and sizes most attractive to a particular pollinator, fruit forms may be determined in part by who or what eats them. A 1983 study by Janson, for example, found that indigenous birds and mammals in a Peruvian tropical forest tended to prefer fruit species that best matched their size, visual abilities and jaw morphology. Added Mary Ann Lila, faculty director of the Fruit and
Vegetable Science Institute at Of course, convenience tends to mean many different things to humans. In nature, a round fruit is the optimum shape for packing the most seeds into a limited space, wrote Tanksley in an expansive paper on the subject of tomatoes in 2004. Smallness is esteemed because it tends to produce a better seed yield per gram of fruit tissue. No plant wants to pour extra energy and resources into producing fruit bigger or more fleshy than necessary. “In the wild, tomato fruit are adapted for seed dispersal,” wrote Tanksley. “Ripening fruit, with their soft flesh and ready supply of sugars and other nutrients, attract small rodents and birds. In this regard, small fruit may provide an advantage over large fruit for dispersal because they can be readily removed, carried and dispersed.” Humans, of course, generally think bigger is better. They also prefer fruits to be abundant and well-shaped for ease of harvest. Think about the choice between harvesting a bushel of apples and a bushel of blueberries, said Tanksley. To that end, farmers and plant breeders have historically manipulated fruit shapes and sizes, often with dramatic effect. Example: Squarish tomatoes that are easier to machine-harvest and pack. This is not the same as genetic modification or engineering, a controversial practice in which genes from two or more organisms are combined to create a new entity with modified or novel traits. In traditional selective breeding, researchers tinker with genes only in that species, emphasizing some or diminishing others. Not all of the resulting shape-shifting is intentional. In genetics, there's a concept called pleiotropy, which posits that a single gene can influence multiple traits. Tanksley suggests there's substantial evidence that at least some domesticated fruits selected for greater size were also altered in shape because both traits were controlled by the same selected gene or set of genes. There's no doubt humans have assumed a fundamental and permanent role in determining the shape of fruits and vegetables to come. The upside, of course, are fruits and vegetables better suited to our particular tastes and needs. A downside, said Lila at “This is why some current breeding efforts, including ours, look to introduce back some of the wild characteristics without obliterating market appeal,” Lila said. Without continued human intervention, it's debatable whether some, perhaps most, fruits and vegetables would persist – at least as we know them now. “If man stopped selecting, intervening, harvesting,” said van der Knaap, “most of our domesticated plants would simply disappear because they are not fit to survive under natural conditions or make sufficient seed.” For example, banana cultivars like the ubiquitous yellow Cavendish would likely vanish. Wild, undomesticated banana plants produce large and plentiful seeds in their fruit. Commercial Cavendish plants are sterile. They do not produce viable seeds. New plants are propagated by removing and transplanting part of a living plant's underground stem. Stop doing that, however, and bananas – at least the kind most Americans eat – would be in very bad shape. Country-of-origin food labeling begins next week(cfbf.com) – Starting next week, grocery shoppers will be able to distinguish more easily between U.S.-grown foods and imported products. Foods such as meat, fruits and vegetables will carry country-of-origin labeling beginning Sept. 30, under federal legislation that requires retailers to inform consumers where certain agricultural products come from. The new rule is a victory for California farmers and ranchers, who have long fought for country-of-origin labeling, or COOL, because they feel consumers would seek out and buy more U.S. agricultural products if given the information and choice, said Kenny Watkins, second vice president of the California Farm Bureau Federation. "This is a success story. California Farm Bureau has been in support of country-of-origin labeling for years and we're glad to see it finally implemented," he said. "We hope it'll be implemented logically and sensibly so it provides a benefit to our producers and consumers." Supporters say the new labels will help consumers be more discriminating about the foods they buy. " COOL applies to fresh beef, lamb, chicken, goat and pork, as well as fresh and frozen fruits and vegetables, macadamia nuts, pecans, ginseng and peanuts. Wild and farm-raised fish and shellfish have had to disclose country of origin since 2005. Retailers may use a wide range of methods to show country of origin, including labels, placards, stamps, bands, twist-ties and pin tags. Some product labels, such as those on meat, may list multiple countries if the animals were born, raised and finished in different countries. The new rule also allows state, local or regional labeling
of produce, such as "California Grown," " The new rule does not cover processed foods such as sausage, corned beef, chicken tenders, certain salad mixes or fruit cups with melons, bananas and strawberries. Food sold through food-service establishments, including restaurants, delicatessens, schools, hospitals and other institutions, also are exempt. COOL first became law under the 2002 Farm Bill, but implementation was delayed due to resistance from sectors that raised concerns about the practicality and logistics of some of the provisions, as well as increased costs that producers, retailers and consumers could have to bear. Others worried there would be extra administrative and record-keeping burdens placed on businesses. Barry Bedwell, president of the California Grape and Tree Fruit League, said COOL requirements have since been much simplified and streamlined in the 2008 Farm Bill. The new version of the legislation also reduced some of the liability and penalty exposure that had been an issue in the 2002 version, he added. "We think that once people get a true understanding of this, it's going to work well," he said. The United Fresh Produce Association reported that more than 50 percent of fresh produce sold in retail grocery stores today already carries country-of-origin labeling on packaging or Price Look-Up stickers, while many retailers provide COOL information on in-store signs. The effect of the new rule is expected to be relatively small on individual producers, according to the U.S. Department of Agriculture. Retailers and suppliers, including processors, wholesalers, handlers and importers, will likely feel the most impact. USDA estimates Producer affidavits are sufficient to substantiate origin of meat or produce. For livestock producers, other acceptable methods include animal health papers, import or customs documents and National Animal Identification System records. The legislation allows standard records "maintained in the course of normal business" to serve as verification of origin. All parties of the supply chain are required to maintain their records for one year. Richard Quandt, president of the
Grower-Shipper Vegetable Association of Santa Barbara and "We think overall it's beneficial for Matt Byrne, executive vice president of the California Cattlemen's Association, said that while it remains to be seen how much revenue or additional markets can be developed through COOL, "the goal from our side is that we be able to pass a portion of that back to the producer." "I think we are in a time where there are a lot of questions that are being raised by consumers about where their food comes from," he said. "If there's value that can be identified in one type of labeling or an indication of a specific origin that a consumer wants to purchase, that value that is generated needs to be shared back through the chain." The publishers of Consumer Reports magazine said a poll it
conducted last year found that 92 percent of Americans agree that imported
foods should be labeled by their country of origin. Consumers "We think it will be a great benefit for consumers," Jean Halloran, director of food policy initiatives for Consumers Union, said. "The new labels will give consumers important new information." Nufarm harvests a bumper crop of cash(heraldcun.com.au) – IT'S A great time to be in the agriculture business, according to chemical supplier Nufarm. That was the supplier's upbeat message as it summarised its financial results yesterday. On an operating basis, excluding one-offs, profits came in 36 per cent higher than the year before to a record $163.9 million, above Nufarm's guidance of between $155 million to $160 million. However, the bottom line was marred by a $22.6 million charge from a previously disclosed Brazilian barter trade and a $2.8 million foreign currency loss. That led to a 7 per cent decline in net profits to $137.9 million. Management, however, remain bullish about the year ahead. It predicted an after tax operating profit for the year ahead of between $220 million and $230 million. Nufarm's optimism is based on continuing changes to farming practices that help yield improvement, particularly in developing markets. Managing director Doug Rathbone said the 2008 result was based on a strong performance from all of Nufarm's regional businesses. The Australian operation led the way thanks to improved
climactic conditions, while Mr Rathbone said demand for crop protection products was strong as farmers sought to maximise the benefits of high commodity prices. Demand for glyphosate had been particularly strong and only a shortage had prevented Nufarm from selling a lot more, he said. Nufarm had lifted its investment in partnerships with Chinese manufacturers from $28 million to about $50 million to improve its glyphosate supplies. The company said it remained strongly focused on its geographic and product portfolio expansion strategy and was in an excellent position to achieve strong revenue and earnings growth this year. Nufarm said it planned to sell more core products, such as glyphosate and herbicides, as a result of greater demand and growth in market share, especially in the US and Europe. It also expects to strengthen its distribution in the It said a significant number of new products were scheduled for regulatory approval and launch. These would strengthen Nufarm's
position in the valuable cereal fungicide and herbicide segments in The current year will also be the first full year where Nufarm has had products in sectors such as pasture and cotton in the US and Brazil, and citrus in Brazil. "Volume growth in existing products and new product introductions will contribute to strong underlying growth in the Nufarm business over the course of the year," the company said. It declared a final dividend of 23 a share for shareholders on the books by October 24, compared to 21 in the prior corresponding period, to be paid on November 17. Safety issues, economy take center stage at PMA(supermarketnews.com) – An industry's problems prompt a
national crisis of confidence. Consumers are put at risk. Media attention is
focused on the fallout. Government overseers are accused of lax regulation.
Beyond the immediate problem, a bigger question is how to right the system.
Sounds familiar? You wouldn't be wrong in thinking this scenario describes last
week's meltdown in the Andean countries seek quick trade deal with EU(Reuters) – End Transmission |
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