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Chemical discoveries germinate hated species

By on September 17, 2021 0

Infrared image showing increased transpiration (blue) of wheat and tomatoes treated with TAA. Credit: Aditya Vaidya / UCR

Otherwise, the dormant seeds are brought back to life thanks to new chemicals discovered by a team led by the University of California at Riverside.

Plants have the ability to perceive drought. When they do, they release hormones that help them hold on the waterThis same hormone, ABA, sends a message to seeds that it is not a good time to germinate and slows down germination. Yield In hot places, there is less food and the list goes on and on due to climate change.

“If you block the ABA, Chemical route this plant Used to prevent seed Aditya Vaidya, scientist and research author at Project UCR, said that “sprouting” and “our new chemical, Antabactin, does just that. Applying it will germinate dormant seeds. I showed it. “

Demonstration of the efficacy of antabactin Minutes of the National Academy of Sciences.

This work is built on the same team Creation Chemicals that mimic the effects of ABA hormones produced by plants in response to drought stress. Its chemical, opabactin, slows plant growth, conserves water, and does not wilt. It works by causing the plant to close the small pores in the leaves and stems, thus preventing water from escaping.

Then, the team wanted to find a molecule having the opposite effect, by opening the pores, promoting the germination and growth of plants. Breeding has largely eliminated seed dormancy, but there are still some issues. produce Like lettuce.

Sean Cutler, professor of plant cell biology at UCR and co-author of the study, said that accelerating and slowing plant growth is an important tool for farmers. “Our research is to manage these two needs,” he said.

To find the opposite of opabactin, Vaidya quickly made 4,000 derivatives. “He found a needle in a pile of chemical hay. The compound he created blocks ABA receptors and is very potent, ”Cutler said.

In their treatise Members of the team Applying antabactin to barley and tomato seeds has been shown to promote germination. Maybe Antabactin and Opabactin can work together to help crops thrive in a drier, hotter world.

If antabactin helps seeds germinate in healthy plants, farmers can start saving water early in the growing season by spraying opabactin. This way, enough water is “stored” when the plant begins to flower.

“Because women need high levels of nutrients during pregnancy, plants need more water and nutrients when they flower and bear fruit,” Vaidya said. “This is true for most crops, especially economically relevant crops such as corn and wheat. “

The research team continues to study ABA-induced changes in seed dormancy in a variety of other plant species. They also want to study the use of antabactin. Chemistry A tool to stimulate plant growth in greenhouses where water is not restricted.

“We want to identify the key molecular players that dominate seed dormancy and ultimately reduce the effects of unhappy plantings and reduced yields by the poor. Seed germinationsaid Vadia.

Game Changer: New chemicals keep plants plump

For more information:
Aditya S. Vaidya et al, click-to-lead design of picomolar ABA receptor antagonist with potent activity in vivo, Minutes of the National Academy of Sciences (2021). DOI: 10.1073 / pnas.2108281118

Quote: The Chemical Discovery was obtained from https://phys.org/news/2021-09-chemical-discovery-reluctant-seeds.html September 17, 2021 (September 17, 2021) Get Seeds Reluctant to

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