Treating peanut allergy bit by bit
Middle school science adventures
Springing forward
Tree Frogs
Frogs and Toads
Poison Dart Frogs
Insect Stowaways
How to Silence a Cricket
Putting a Mouse on Pause
Meet your mysterious relative
Slumber by the numbers
Pondering the puzzling platypus
Chemistry and Materials
Bandages that could bite back
Getting the dirt on carbon
Pencil Thin
Seen on the Science Fair Scene
Electronic Paper Turns a Page
The Book of Life
Dinosaurs and Fossils
Middle school science adventures
Fingerprinting Fossils
Ancient Critter Caught Shedding Its Skin
E Learning Jamaica
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Petrified Lightning
Deep Drilling at Sea
A Grim Future for Some Killer Whales
Acid Snails
Groundwater and the Water Cycle
The Down Side of Keeping Clean
Finding the Past
The Taming of the Cat
Your inner Neandertal
Settling the Americas
Manta Rays
Food and Nutrition
The Essence of Celery
Chocolate Rules
Making good, brown fat
GSAT English Rules
Order of Adjectives
Problems with Prepositions
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
42,000 students will sit for the GSAT Exam in two weeks
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Results of GSAT are in schools this week
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
Math Naturals
Math is a real brain bender
10 Common Mistakes When Preparing for the GSAT Math Test
Human Body
Don't Eat That Sandwich!
Gut Microbes and Weight
Taking the sting out of scorpion venom
African Jackal
Tasmanian Devil
How children learn
Raise a Lifelong Reader by Reading Aloud
What Not to Say to Emerging Readers
The Pressure of Scuba Diving
Einstein's Skateboard
Project Music
Fastest Plant on Earth
Cactus Goo for Clean Water
Flower family knows its roots
Boa Constrictors
Space and Astronomy
Solving a Sedna Mystery
Sun Flips Out to Flip-Flop
Planet Hunters Nab Three More
Technology and Engineering
Musclebots Take Some Steps
Young Scientists Take Flight
A Micro-Dose of Your Own Medicine
The Parts of Speech
What is a Verb?
What is a Preposition?
Charged cars that would charge
How to Fly Like a Bat
Robots on a Rocky Road
The solar system's biggest junkyard
Watering the Air
Where rivers run uphill
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Stalking Plants by Scent

Dodder is a wiry, orange vine that steals water and nutrients from other plants. Scientists have now found that this vine chooses its victim by smell, growing its shoots in the direction of a plant's natural perfume. When a dodder seed sprouts, it doesn't grow roots to seek its own food. Instead, it grows a shoot that reaches out to other plants, tapping them for food. The baby vine needs to find a host within a week to survive. It then grows into a spaghetti tangle that can even ensnare more than one plant. Also known as strangleweed and witches' shoelaces, dodders are listed among the 10 worst weeds in the United States. They can cost farmers millions of dollars by stunting their crops. To figure out how a type of dodder vine known to prefer tomato plants finds a victim, scientists placed dodder sprouts near several possible targets. These targets included pots of moist soil, little jars of dyed water that created colored lights, young tomato plants, and even a cup of perfume made from chemicals that tomato plants give off. Seedlings grew toward the tomato plant. They also reached out toward the cup of tomato perfume. They tended not to grow toward the moist soil or colored water. The scientists then used a different setup, hiding the targets in chambers connected to dodder sprouts only by curving pipes, so the vine could find them only by smell. Dodder sprouts still grew toward their favored targets. By placing dodder sprouts near different plants, the scientists found that the type of dodder that they were studying prefers tomatoes and a flower called impatiens. And when given a choice between tomato and wheat, vine seedlings grow toward tomato. The researchers then tested seven of the ingredients that make up tomato perfume separately. Dodder sprouts were attracted to three of them. One of these ingredients turns up in wheat perfume, but the wheat perfume also contains a substance that repels dodder sprouts. This chemical could offer farmers one way to fight the vine and save their crops.óC. Gramling

Stalking Plants by Scent
Stalking Plants by Scent

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