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Genetics

Dr. Amir Raz. Photo: Communications

Research in molecular genetics and genetic engineering in fertilization mechanisms examines the self-fertilization ability of trees without the help of bees

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Genetic characterization of varieties is very important for farmers, because it allows choosing the right combination of planting the varieties in the orchard, to obtain a maximum yield. Characterizing varieties that are 'self-fertile', i.e. self-fertilizing (as in apricots, for example), allows planting plots with only one variety (without the need for an additional variety for fertilization - male and female) that yield a high yield, regardless of the environmental conditions at the time of fertilization, such as temperatures or bee activity such as Also saving agricultural land
neurological disease. Illustration: depositphotos.com

Death on the bypass

Weizmann Institute of Science scientists have uncovered an unusual mechanism of cell death. The findings may lead to new treatments for various diseases
Hurricanes are approaching the USA. Photo: depositphotos.com

The conservation laws common to hurricanes and the movement of proteins

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Ovules in early stages of development in the ovary segment of the fruit fly. In green - mitochondrial organelles that are not active, in yellow-red - active organelles

Bacteria are fueled

Weizmann Institute scientists have revealed an effect of the gut bacteria on the body's systems mediated through the supply of essential compounds for energy production in the mitochondria
A group of Neanderthals prepares to hunt. Photo: depositphotos.com

Out of Africa: In the wake of modern man and the Neanderthals he met

Scientists from the Weizmann Institute of Science and archaeologists from the Antiquities Authority returned to the archaeological site of Boker Attama in the Negev, and shed new light on a defining chapter in human evolution
Illustration of a eukaryotic cell containing a nucleus, organelles and a membrane. Photo: depositphotos.com

New research: Why did sexual reproduction develop, and indeed it did?

It is the fusion between the genetic load of the mitochondrion and the host cell that allowed the development of eukaryotes and the sophisticated multicellular organisms we know today," states the researcher
The Israeli delegation (from right to left): Yara Shulman, Tamar Farr, Nega Friedman and Nicole Grossman. Photo: Future Scientists Center

European Mathematics Champions

Students trained at the Weizmann Institute won the gold and silver medals in the European Mathematics Olympiad for Girls
The triple strategy of the corona: 1. A general decrease in the translation products in the cell; 2. Breakdown of messenger RNA molecules of the cell; 3. Preventing the exit of messenger RNA molecules from the nucleus

The triple of the corona

The scientists of the Weizmann Institute of Science, in partnership with the scientists of the Biological Institute in Nes Ziona, revealed how a unique combination of three mechanisms allows the corona virus to escape the immune system
honey. Photo: depositphotos.com

Bio-U Honey has applied for a patent for methods for the production of cultured honey

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The goal: the creation of an artificial honey stomach that traces the activity of the bee's stomach * CEO Ofir Devash: "BU Honey is working on the development of a breakthrough technology that will change the face of the global honey market and enable sustainable food products
cells in a petri dish. Photo: depositphotos.com

TA researchers disproved a theory about the role of COPII proteins inside the cell

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A XNUMXD model of a network of photosynthetic membranes in a plant, based on electron microscope photographs. Thylakoids (in yellow) are surrounded by parking garage-like structures, consisting of ramps curving to the left (in purple) and to the right (in blue)

Park with minimal effort

How parking lot-like structures are organized that are used to transport substances within the cell
Avocado. Photo: depositphotos.com

A natural food supplement may act as an anti-anxiety agent

Weizmann Institute of Science scientists have shown that the herbal supplement reduces anxiety levels in mice without significant side effects
Mouse brain section. The parts illuminated in red - communication pathways between nerve cells that express the mosquito protein. In blue - the cell nuclei

Mosquito on the head

Weizmann Institute of Science scientists have developed a research tool that will shed new light on communication pathways between nerve cells in the brain
Potatoes. Image: depositphotos.com

How does a potato feel?

Researchers from the Faculty of Agriculture developed biological sensors in potatoes through genetic engineering, which warn in real time about the distress of the plant
The genetically engineered wild tomatoes grown by Dr. Kazachkova in greenhouses at the Weizmann Institute. "These were the most delicious bitter tomatoes I have ever tasted in my life"

A brief history of the tomato

From the right: Prof. Eli Waxman and Prof. Avishai Gal-Yam

A star dies, a particle is born

Is the origin of a particle that landed at the South Pole in a cosmic event 700 million years old?
Measuring heart muscle cell beats for a few minutes (left) does indeed reveal deviations from the ideal beat rhythm - a beat every second - but when this is done over several hours (right) a new pattern is revealed: slower or faster than average beats that appear in clusters of 10 to 30 minutes

The strange dance of the heart

Scientists at the Weizmann Institute and the Technion have discovered clues to the existence of a slow regulatory mechanism in heart muscle cells designed to regulate the rhythm of their beats, and to ensure that it is as close as possible to a cycle of one beat per second
4D structure of the stemalnotide drug molecule (pink) and calcium ion (green) in the binding pocket of the MCXNUMX receptor

The Hunger Games: the mechanism of action of the switch in the brain responsible for the feeling of satiety

Understanding the mechanism is expected to help in the development of new anti-obesity drugs
Neurons of a mouse under a microscope. An inhibitory neuron (right) and an excitatory neuron (left)

Keep a balanced mind

Networks of nerve cells grown in the laboratory revealed a new regulatory mechanism that maintains a balance between activation and suppression of brain activity
DNA molecule. Image: depositphotos.com

The loom of evolution

A new method makes it possible to locate points of similarity between gene control molecules of different species - from lizards to humans - and thus reveal essential sections that have been preserved throughout evolution
Micro-reservoirs of lipid assemblies (liposomes) dispersed in the bulk of the gel - the diameter of the smallest ones is about 100 nanometers

Inspirational cartilage

Weizmann Institute scientists have created innovative materials inspired by the lubrication model of our joints. The result may be real news for the biomedical industry
golden wheat Image: depositphotos.com

Researchers returned a genetic segment of the wild wheat to modern wheat and improved the efficiency of the root system

Wild wheat, "the mother of wheat", is one of the first plants that man domesticated about ten thousand years ago. Over the years, as a result of accelerated cultivation to improve crops, many essential traits that are retained in the wild species have been displaced from modern wheat. Among the repressed traits, there are anatomical and physiological characteristics of the root system that have a dramatic effect on the water balance of the entire plant
A mouse fetus grown six days outside the womb. His developing organs were marked with fluorescent genes

Weizmann Institute scientists grew mouse embryos outside the womb

For seven years, through trial and error, fine-tuning and repeated tests, in the laboratory of Prof. Hana, who specializes in embryonic stem cells, they developed a two-stage method that makes it possible to grow normal mouse embryos outside the womb from the initial stages of pregnancy in order to study the different stages of development of the embryo, Something that was not possible in mammals until now
Imaging of a ring-shaped malaria parasite that lives inside a red blood cell and secretes vesicles carrying the S20 proteasome (colorful barrel-like structures)

kills them softly

A model of the translating ribosomes and the elongation factors. The localized accumulation of translation factors contributes to efficient protein synthesis within a dense intracellular environment.

High-speed atomic force microscopy reveals the components of the ribosome

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The researchers conclude and say: "Future research using high-speed atomic force microscopy (HS-AFM) will provide additional important information for understanding the dynamic activity of these complex translation machines."
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