Science & Environment
Molecular architecture determines tomato plant resistance to its main pest
Source: Phys.org - latest science and technology news stories · Published

An international study investigating why wild tomatoes are more resistant to the tomato leafminer (Phthorimaea absoluta) than cultivated varieties revealed that the secret lies in the spatial structure of a plant defense molecule. The researchers mapped the biochemical origin of
An international study investigating why wild tomatoes are more resistant to the tomato leafminer (Phthorimaea absoluta) than cultivated varieties revealed that the secret lies in the spatial structure of a plant defense molecule. The researchers mapped the biochemical origin of this difference and demonstrated that altering four amino acids in a single enzyme is sufficient to alter the structure of the substance and increase its toxicity against the pest. This finding paves the way for creating resistant tomatoes through gene editing.
Related stories

Controlling where gibberellin acts reveals how the plant hormone coordinates root growth
Plant hormones influence growth and development by acting on specific cells and tissues. However, determining precisely where and when a hormone needs to act has been challenging because conventional hormone treatment generally activates signaling throughout the plant.
Phys.org - latest science and technology news stories ·

Building boom puts 300,000 people in the path of potential Himalayan disasters
The construction of tourism facilities, housing, and infrastructure has surged in parts of Nepal and India's Uttarakhand.
feeds.bbci.co.uk ·

Atomic magnetism reveals why iron, but not chromium, can produce ammonia using sunlight
Two nearly identical materials have completely different chemical behavior. Research teams at the University of Vienna and TU Wien studied catalysts that use the energy of sunlight to produce ammonia. Surprisingly, when the three iron atoms that form tiny triangles in these catal
Phys.org - latest science and technology news stories ·

Macromolecular crowding could help build artificial cell systems
Macromolecular crowding can serve as a design tool for controlling the formation and organization of synthetic DNA droplets, a study from Science Tokyo reveals. Researchers investigated this strategy using DNA nanostars and polymeric crowding agents to mimic the crowded cellular
Phys.org - latest science and technology news stories ·

Explaining the difference between brittle and ductile behavior in polymer glasses
Glasses are (mostly) brittle, metals can be ductile (plastic), and liquids flow easily. Polymers are interesting because they exhibit all three types of behavior, depending on their chemical nature, temperature, and deformation rate. If polymers are not able to crystallize, their
Phys.org - latest science and technology news stories ·