Researchers document the first example of evolutionary changes in a plant in response to humans.
- A plant coveted in China for its medicinal properties has developed camouflage that makes it less likely to be spotted and pulled up from the ground.
- In areas where the plant isn't often picked, it's bright green. In harvested areas, it's now a gray that blends into its rocky surroundings.
- Herbalists in China have been picking the Fritillaria dealvayi plant for 2,000 years.
Fritillaria dealvayi<p>The plant is <em> </em><a href="http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200027633" target="_blank"><em>Fritillaria dealvayi</em></a><em>,</em> and its bulbs are harvested by Chinese herbalists, who grind it into a powder that treats coughs. The cough powder sells for the equivalent of $480 per kilogram, with a kilogram requiring the grinding up of about 3,500 bulbs. The plant is found in the loose rock fields lining the slopes of the Himalayan and Hengduan mountains in southwestern China.</p><p>As a perennial that produces just a single flower each year after its fifth season, it seems <em>Fritillaria</em> used to be easier to find. In some places its presence is betrayed by bright green leaves that stand out against the rocks among which which it grows. In other places, however, its leaves and stems are gray and blend in with the rocks. What's fascinating is that the bright green leaves are visible in areas in which Fritillaria is relatively undisturbed by humans while the gray leaves are (just barely) visible in heavily harvested areas. Same plant, two different appearances.</p><div id="19cbf" class="rm-shortcode" data-rm-shortcode-id="c68d3086f5411ffd951edaad1cb811b9"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1329832938985435138" data-partner="rebelmouse"><div style="margin:1em 0">2/2: The picture on the left shows a Fritillaria delavayi in populations with high harvest pressure, and the one on… https://t.co/oriBNZGcsV</div> — University of Exeter News (@University of Exeter News)<a href="https://twitter.com/UniofExeterNews/statuses/1329832938985435138">1605891854.0</a></blockquote></div>
How we know we're the cause<p>There are other camouflaging plants, but the manner in which <em>Fritillaria</em> has developed this trait strongly suggests that it's a defensive response to being picked. "Many plants seem to use camouflage to hide from herbivores that may eat them — but here we see camouflage evolving in response to human collectors."</p><p>"Like other camouflaged plants we have studied," Niu says, " we thought the evolution of camouflage of this fritillary had been driven by herbivores, but we didn't find such animals." His close examination of Fritillaria leaves revealed no bite marks or other signs of non-human predation. "Then we realized humans could be the reason."</p><p>In any event, says Professor Hang Sun the Kunming Institute, "Commercial harvesting is a much stronger selection pressure than many pressures in nature."</p><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDgyNzM0My9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYzMDc3NDQwMn0.lXwsG0ShcnMcVLl06APdEeEOY5_WOs4UfN8oVCKsgtc/img.png?width=980" id="ccc8e" class="rm-shortcode" data-rm-shortcode-id="907e152dd5ad0429aa6350c53f5a85aa" data-rm-shortcode-name="rebelmouse-image" alt="herb shop" />
Credit: maron/Adobe Stock
The study<p>Since herbalists have been plucking <em>Fritillaria</em> from the rocks for 2,000 years, one might hope a record would exist that could allow researchers to identify areas in which the plant has been most thoroughly picked. There is no such documentation, but Liu and Stevens were able to acquire this type of information for five years (2014–2019), tracking the harvests at seven <em>Fritillaria</em> study sites. This allowed them to identify those areas in which the plant was most heavily harvested. These also turned out to be the locations with the gray-leaf variant of <em>Fritillaria</em>.</p><p>Further supporting the scientists' conclusion that gray <em>Fritillaria</em> was more likely to evade human hands and live long enough to reproduce was that participants in virtual plant-identification tests confirmed the species was hard to spot in the wild.</p><p>"It's possible that humans have driven evolution of defensive strategies in other plant species, but surprisingly little research has examined this," Stevens notes.</p><p>Hang Sun says such studies make clear that humans have become drivers of evolution on our planet: "The current biodiversity status on the earth is shaped by both nature and by ourselves."</p>
A study finds 1.8 billion trees and shrubs in the Sahara desert.
- AI analysis of satellite images sees trees and shrubs where human eyes can't.
- At the western edge of the Sahara is more significant vegetation than previously suspected.
- Machine learning trained to recognize trees completed the detailed study in hours.
Why this matters<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDU2MDQ1OC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYzOTkyODg5NX0.O3S2DRTyAxh-JZqxGKj9KkC6ndZAloEh4hKhpcyeFDQ/img.jpg?width=980" id="3770d" class="rm-shortcode" data-rm-shortcode-id="3c27b79d4c0600fb6ebb82e650cabec0" data-rm-shortcode-name="rebelmouse-image" />
Area in which trees were located
Credit: University of Copenhagen<p>As important as trees are in fighting climate change, scientists need to know what trees there are, and where, and the study's finding represents a significant addition to the global tree inventory.</p><p>The vegetation Brandt and his colleagues have identified is in the Western Sahara, a region of about 1.3 million square kilometers that includes the desert, <a href="https://en.wikipedia.org/wiki/Sahel" target="_blank">the Sahel</a>, and the <a href="https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/subhumid-zones" target="_blank" rel="noopener noreferrer">sub-humid zones</a> of West Africa.</p><p>These trees and shrubs have been left out of previous tabulations of carbon-processing worldwide forests. Says Brandt, "Trees outside of forested areas are usually not included in climate models, and we know very little about their carbon stocks. They are basically a white spot on maps and an unknown component in the global carbon cycle."</p><p>In addition to being valuable climate-change information, the research can help facilitate strategic development of the region in which the vegetation grows due to a greater understanding of local ecosystems.</p>
Trained for trees<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDU2MDQ3MC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYzNTk5NTI3NH0.fR-n1I2DHBIRPLvXv4g0PVM8ciZwSLWorBUUw2wc-Vk/img.jpg?width=980" id="e02c0" class="rm-shortcode" data-rm-shortcode-id="79955b13661dca8b6e19007935129af1" data-rm-shortcode-name="rebelmouse-image" />
Credit: Martin Brandt/University of Copenhagen<p>There's been an assumption that there's hardly enough vegetation outside of forested areas to be worth counting in areas such as this one. As a result the study represents the first time a significant number of trees — likely in the hundreds of millions when shrubs are subtracted from the overall figure — have been catalogued in the drylands region.</p><p>Members of the university's Department of Computer Science trained a machine-learning module to recognize trees by feeding it thousands of pictures of them. This training left the AI be capable of spotting trees in the tiny details of satellite images supplied by NASA. The task took the AI just hours — it would take a human years to perform an equivalent analysis.</p><p>"This technology has enormous potential when it comes to documenting changes on a global scale and ultimately, in contributing towards global climate goals," says co-author Christian Igel. "It is a motivation for us to develop this type of beneficial artificial intelligence."</p><p>"Indeed," says Brandt says, "I think it marks the beginning of a new scientific era."</p>
Looking ahead and beyond<p>The researchers hope to further refine their AI to provide a more detailed accounting of the trees it identifies in satellite photos.</p><p>The study's senior author, Rasmus Fensholt, says, "we are also interested in using satellites to determine tree species, as tree types are significant in relation to their value to local populations who use wood resources as part of their livelihoods. Trees and their fruit are consumed by both livestock and humans, and when preserved in the fields, trees have a positive effect on crop yields because they improve the balance of water and nutrients."</p><p>Ahead is an expansion of the team's tree hunt to a larger area of Africa, with the long-term goal being the creation of a more comprehensive and accurate global database of trees that grow beyond the boundaries of forests.</p>
Your health and the health of the planet are not indistinguishable.
- Transitioning to a plant-based diet could help reduce obesity, cardiovascular disease, and type 2 diabetes.
- Humans are destroying entire ecosystems to perpetuate destructive food habits.
- Understanding how to properly transition to a plant-based diet is important for success.
Richard Dawkins: No Civilized Person Accepts Slavery So Why Do We Accept Animal Cruelty? | Big Think<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="c09f23c34faacc8ec55aba054fae9c7c"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/_4SnBCPzBl0?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><h3>Get your hands dirty—in the kitchen</h3><p>Quarantine offered an entire world the opportunity to get into the kitchen and put on a chef's apron. Complaints about "not enough time" are the biggest barriers to preparing home-cooked meals. Of course, pandemic fatigue has resulted in a number of recent chefs ordering out more. That said, this is the perfect time to try your hand at new dishes. With infection rates <a href="https://www.vox.com/coronavirus-covid19/2020/10/11/21511641/covid-19-us-cases-update-testing-deaths-hospitalizations" target="_blank">increasing across the country</a>, stocking up on seasonal vegetables is a great idea. </p><p>Simple seasonal ways to begin your plant-based exploration include <a href="https://nomnompaleo.com/post/11136213353/roasted-kabocha-squash" target="_blank" rel="noopener noreferrer">roasted kabocha squash</a>, <a href="https://www.delicious.com.au/recipes/no-chop-pumpkin-soup/seblnp2r?r=recipes/collections/autumnrecipes&c=f3bf723a-05a7-487d-bd4b-5bc8af042ca9/autumn%20recipes%20you%27ll%20fall%20in%20love%20with" target="_blank" rel="noopener noreferrer">Bombay potatoes</a>, and <a href="https://www.delicious.com.au/recipes/no-chop-pumpkin-soup/seblnp2r?r=recipes/collections/autumnrecipes&c=f3bf723a-05a7-487d-bd4b-5bc8af042ca9/autumn%20recipes%20you%27ll%20fall%20in%20love%20with" target="_blank" rel="noopener noreferrer">no-chop pumpkin soup</a>. If you're feeling a bit more adventurous, <a href="https://www.thecuriouschickpea.com/masoor-dal-tadka/" target="_blank" rel="noopener noreferrer">Masoor Dal Tadka</a> will keep you warm into the winter months. A delicious <a href="https://www.delish.com/cooking/recipe-ideas/a23362341/sweet-potato-salad-recipe/" target="_blank" rel="noopener noreferrer">sweet potato salad</a> will never fail you. This <a href="https://www.buzzfeed.com/hannahloewentheil/easy-meatless-monday-recipes" target="_blank">round-up of 25 vegetarian recipes</a> will keep you busy for a few months (or a month if you're ambitious). </p><h3>Educate yourself on the benefits</h3><p>Education is essential for beginning any endeavor. Weeding through propaganda and bunk science to find credible evidence of any diet is difficult, though many experts agree that for individual and societal health, a plant-based diet is key. </p><p>Even vegetarianism has its pitfalls. For example, <a href="https://michaelpollan.com/books/cooked/" target="_blank">one-fifth of all calories</a> consumed by Americans come from nutritionally-worthless white flour. If you're eating processed bread every day, you're missing out on the benefits of a rich and varied diet. </p><p>Many of the "<a href="https://www.who.int/chp/chronic_disease_report/media/Factsheet4.pdf?ua=1" target="_blank">diseases of affluence</a>," such as cardiovascular and obesity-related ailments, originate with a poor diet (and lack of exercise). Meat has been an essential component of the human diet throughout our evolution. Today, we eat too much of it—and too much of it is produced in factory farms. Transitioning to a plant-based diet could help cut down on carbon emissions and the aforementioned diseases. </p><p>Plants are full of valuable phytochemicals and antioxidants that support a <a href="https://www.mdanderson.org/publications/focused-on-health/5-benefits-of-a-plant-based-diet.h20-1592991.html" target="_blank" rel="noopener noreferrer">strong immune system</a>. A (non-processed) plant-based diet reduces inflammation and offers plenty of fiber. It has been shown to reduce your risk of diabetes, stroke, and heart diseases. Those are all great reasons to transition. </p><h3>Begin your journey with a single step</h3><p>Going cold turkey rarely works for addicts. The same is true of diets. If you're interested in a plant-based diet, try to eat veg every other day for a few weeks. Notice how your body reacts on days you eat this way compared to other days. Gradually phase out meat products. Attempt meat-free weekdays and see if your craving for meat persists on the weekend. Try using meat as a garnish instead of the main course. </p><p>More importantly, have a replacement plan. Dropping all meat products to consume frozen dinners isn't the best course of action. Filling your cart with bags of foods you've never eaten before will overwhelm you. Prepare meals as you taper off of meat; arm yourself with a broad knowledge of healthy plants and vegetables. At some point, you might forget what you've been missing. </p>
Photo: anaumenko / Adobe Stock<h3>Start with foods you already love</h3><p>The good news is that you likely have a number of plant-based side and main dishes that you love. Transitioning into a new diet requires a certain level of enjoyment. Otherwise, you're going to loathe eating, and eating should bring some level of satisfaction. </p><p>Try a one-to-one ratio to begin. On one night, cook a meal you love. Then try something completely new the next night. Follow that up with old faithful. This way, you constantly have new dishes to look forward to yet don't get stuck in thinking you have to be creative every single day. You'll likely find some winners and decide not to repeat other dishes. Regardless, you'll have a broader menu to work from. </p><h3>Avoid ingredients you can't pronounce</h3><p>The produce section of your grocery store provides almost everything you need to survive. You can likely pronounce every ingredient in this section. There's a vast difference between food and foodstuffs. Plenty of plant-based companies offer too much of the latter. Potato chips are technically vegetarian, and some use simple ingredients, yet it's easy to fill your cart with foodstuffs. The health benefits of this are not only negligible but potentially dangerous. </p><p>Qi Sun, an assistant professor of nutrition at the Harvard T.H. Chan School of Public Health, <a href="https://www.webmd.com/diet/obesity/news/20191104/are-there-health-downsides-to-vegetarian-diets" target="_blank">explains</a>. "If you eat a vegan diet, but eat a lot of french fries, refined carbs like white bread, white rice, that's not healthy." He suggests "emphasizing fruits and vegetables. Not fruit juice but whole food. And nuts."</p><h3>Utilize the wisdom of the internet—but don't get indoctrinated</h3><p>There's a lot of terrible advice—and worse, propaganda—on the internet. While you likely don't want to eat eggs every day, they're not "toxic," as one popular documentary claims. Eggs are <a href="https://www.bbcgoodfood.com/howto/guide/ingredient-focus-eggs" target="_blank">one of the best</a> low-cost, high-value foods around. </p><p>Read websites like <a href="https://www.everydayhealth.com/diet-nutrition/scientific-benefits-following-plant-based-diet/" target="_blank">Everyday Health</a>, which uses clear language, like "may improve" and "may decrease," with links to credible studies. This way you follow the going science without becoming fanatical about a particular diet or being disappointed if it turns out the research doesn't hold up. Good science evolves with evidence. And right now, the evidence points to more vegetables in our diets. </p><p>--</p><p><em>Stay in touch with Derek on <a href="http://www.twitter.com/derekberes" target="_blank">Twitter</a> and <a href="https://www.facebook.com/DerekBeresdotcom" target="_blank" rel="noopener noreferrer">Facebook</a>. His new book is</em> "<em><a href="https://www.amazon.com/gp/product/B08KRVMP2M?pf_rd_r=MDJW43337675SZ0X00FH&pf_rd_p=edaba0ee-c2fe-4124-9f5d-b31d6b1bfbee" target="_blank" rel="noopener noreferrer">Hero's Dose: The Case For Psychedelics in Ritual and Therapy</a>."</em></p>
Can we end world hunger by 2030? Thanks to a new program, the data for it is all there.
- An international team of researchers has released a series of studies geared towards ending world hunger.
- They are thought to be some of the first people to use Evidence Synthesis for agricultural data.
- Their ideas could increase food production and lower poverty for a low cost, regardless if they meet their lofty goal.
Who are these people?<p> Headquartered at Cornell University, <a href="https://ceres2030.org/" target="_blank" rel="noopener noreferrer">Ceres2030 </a>is a collective project involving people from around the world. It is financed in part by the Bill and Melinda Gates Foundation and the German Federal Ministry of Economic Cooperation and Development. <br> <br> The enterprise includes more than 70 researchers from 23 different countries with the best information available on what works to reduce <a href="https://news.cornell.edu/stories/2020/10/cornell-unites-science-and-policy-end-hunger" target="_blank" rel="noopener noreferrer">hunger</a>. These researchers are divided into eight teams, each covering a separate subject area. Each group reviews the literature and combines it into a general review which can be used to inform policy <a href="https://news.cornell.edu/stories/2020/10/cornell-unites-science-and-policy-end-hunger" target="_blank" rel="noopener noreferrer">decisions</a>. </p>
What do they want us to do?<iframe width="730" height="430" src="https://www.youtube.com/embed/D1eFcqZE3xU" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe><p> The analysis shows that many studies agree on the benefits of a few, straightforward initiatives. Among these findings are game-changing ideas <a href="https://www.nature.com/articles/s41477-020-00795-9" target="_blank" rel="noopener noreferrer">like</a>:<br> <br> Farmer's organizations help their members increase both their incomes and crop yields. Membership was linked with higher incomes in nearly 60 percent of studies, and benefits to crop yields were demonstrated in a quarter. These organizations play a part in helping farmers adopt modern techniques, tools, and crop types to help implement other policy suggestions. Assisting people in joining them can have a tremendous impact on their lives.</p><p>In the middle and lower-income countries, nearly three-quarters of small farmers live and work in areas where water is scarce. The vast majority of these farms do not have an irrigation system to speak of. Output and income could both be increased by addressing this infrastructure issue. Helping farmers switch to more climate change and drought-resistant crops and introduce new and improved livestock sources, both as sources of labor and food, can improve productivity and keep people resilient in the face of climate change. </p><p>These are just a handful of the ideas Ceres2030 endorse in their press releases. In each case, they point to piles of data showing the effectiveness of these ideas in increasing incomes, crop yields, and small producers' resiliency in the face of threats such as climate change. It could cost roughly 14 billion dollars more a year in aid to do it, about twice as much as we are spending on the problem now, alongside new investments by the governments of nations most plagued by <a href="https://ceres2030.org/shorthand_story/donors-must-double-aid-to-end-hunger-and-spend-it-wisely/" target="_blank" rel="noopener noreferrer">hunger</a>. </p><p>All of these ideas can be implemented tomorrow; many places have already done these things. It is only a matter of deciding to do it. Some of the findings and ideas are even simpler than these, including discovering that we <a href="https://osf.io/6zc92/" target="_blank">waste a lot of food</a> and that simple solutions can prevent much of it. <br><br>More information on their ideas and how they came to their conclusions can be found on the Ceres2030 <a href="https://ceres2030.org/" target="_blank">website</a>. <br></p>
Will this work?<iframe width="730" height="430" src="https://www.youtube.com/embed/9CdZSakEqBU" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe><p> It might. <br> <br> The findings and recommendations are based on extensive research, histories of successful implementation elsewhere, and a sincere desire to use evidence to help people. Following them would lead to better-informed farmers making more money while sustainably growing more food. The recommendations are neither one-size-fits-all, nor are they overly specific to the point where they cannot be <a href="https://news.cornell.edu/stories/2020/10/cornell-unites-science-and-policy-end-hunger" target="_blank" rel="noopener noreferrer">generalized</a>. <br> <br> There are also plenty of reasons to be pessimistic. A <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7015855/" target="_blank" rel="noopener noreferrer">study</a> published this year in Nature argues that we will not be able to end world hunger by 2030. It takes the stance that some countries with endemic malnourishment are unlikely to reach their development targets for 2025, let alone the more ambitious goals for 2030. <br> <br> The costs of not at least making progress on this front are very high. Without progress, an additional 100 million people could end up both hungry and mired in extreme poverty by the end of the decade, according to an <a href="https://www.weforum.org/agenda/2020/07/global-hunger-rising-food-agriculture-organization-report/" target="_blank" rel="noopener noreferrer">estimate</a> by the United Nations' Food and Agriculture Organization. The COVID-19 pandemic has caused some regression already, as economic difficulty leads to empty bellies. <br> <br> The entirety of human history has been marked by attempts to produce enough food for everybody, and it is only recently (relatively speaking) that we've managed to do that. Today, we grow enough food for 10 billion people but seem to have difficulty getting it to the people who need it most. The suggestions of the Ceres2030 team, if followed, offer the chance to finally rid the world of hunger and famine for less than $50 per currently malnourished person per year. <br> <br> It's only a question of doing it. Let's see if we want to. </p>
Modern crops have been optimized for a lot of things, but not for climate change.
- Growers are struggling to protect their crops from failure as conditions change due to global warming.
- Modern crops lack the fortifying genetic diversity of their ancestors.
- Scientists publish a new guide for strengthening crops through the reintroduction of wild-variety traits based on the latest science.
The problem with domestication<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDQ3NjU0Ny9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYxNzA2MDc2NX0.T41B0nuT0RnVyd_oFrmcCQMf6ZT6FpG2Gmrx9TCZ-mI/img.jpg?width=980" id="e86ad" class="rm-shortcode" data-rm-shortcode-id="19f58b1f2f0ba8c2295c824ff73514a5" data-rm-shortcode-name="rebelmouse-image" alt="plants" />
Credit: Markus Spiske/Unsplash<p>"When plants were domesticated," <a href="https://www.port.ac.uk/news-events-and-blogs/news/scientists-help-reboot-50-years-of-plant-advice" target="_blank">says</a> Dr. Perez-Barrales, one of the study's authors, "they were artificially selected for a specific desirable trait. Artificial selection and farming have led to quality improvements in foods such as meat, milk, and fruit. However, over hundreds of years, there has been a negative impact to this process — a reduction in plant genetic diversity."</p><p>This lack of diversity could spell doom for crops as the conditions in which they grow are impacted by climate change. Scientists believe that a plant's natural genetic makeup, which evolved in response to its surrounding conditions, makes it more likely to be able to continue to adapt. Domesticated crops may lack such flexibility.</p><p>According to Dr. Perez-Barrales, "Climate change is altering the way crops behave." Unfortunately, she adds, "Crops have lost so much genetic diversity they are less able to adapt and respond to climate change. Scientists are now looking at wild crop relatives to see what traits can be improved to make crops better adapted to the current environmental challenges."</p><p>This revisiting of crops' ancestors is very much on the mind of the new study's authors.</p>
A break from past practices<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDQ3NjU2NS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYxMDIyMTEyOX0.vW6NyWC1Ey0uKeNKbBzcV99cyUEwECUpIwjOR-0Z09Q/img.jpg?width=980" id="e3743" class="rm-shortcode" data-rm-shortcode-id="70f3d0885d71401c00ba9329a6b480c5" data-rm-shortcode-name="rebelmouse-image" alt="farmer spraying fields" />
Credit: ittipon/Shutterstock/Big Think<p>The researchers began with a re-visiting of <a href="https://www.jstor.org/stable/1218252?seq=1" target="_blank">guidelines</a> published in 1971 to see how they might be modified. Says Perez-Barrales, "The classification developed in the early 1970s needed to be updated, and in effect rebooted, to integrate this modern information."</p><p>The study's lead author <a href="https://www.kew.org/science/our-science/people/juan-viruel" target="_blank">Juan Viruel</a> of Kew Garden explains, "With this information we can better select the wild species to improve our crops. It is an invaluable checklist for plant breeders and will help production of crops in a more sustainable way."</p><p>Those earlier guidelines also endorse the use of pesticides, now understood to harm fauna and leave fields toxic. The new study suggests a more benign, forward-looking way to deal with pests, says Perez-Barrales: "An alternative for plant breeders is to use wild crop relatives and use the natural genetic variation in those species that protects them against the natural enemies."</p>