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Trigger Add Branches to Plants, Could Boost Crop Yields
Ohio Ag Connection - 02/23/2018

When it comes to agriculture from branched plants, such as apple trees, the more branches that bear fruit, the better. But in the real world, there's a limit to the number of branches that plants make -- a gene tends to put the brakes on this splitting process called shoot branching. Today in ACS Central Science, researchers reveal a chemical that can reverse this limitation, possibly leading to improved crop production.

Previous studies of a plant hormone that inhibits shoot branching resulted in the identification of a regulator gene called D14. Shinya Hagihara, Yuichiro Tsuchiya and colleagues reasoned that if they could inhibit this regulator, they could do the opposite and increase branching. Tsuchiya and Hagihara's teams developed a screen in which they could monitor the shoot branching activity based on whether a reporter chemical called Yoshimulactone Green (YLG) glowed green. By screening a library of 800 compounds, the researchers found that 18 of them inhibited D14 by 70 percent or more. Of these, one called DL1 was particularly active and specific. This inhibitor could increase shoot branching in both a type of flower and in rice. In preparation for DL1's use as a potential commercial agrochemical, the team is now testing how long the chemicals last in the soil and are investigating whether it is toxic to humans.

The authors acknowledge funding from the Japan Society for the Promotion of Science and the Japan Science and Technology Agency.

The American Chemical Society, the world's largest scientific society, is a not-for-profit organization chartered by the U.S. Congress. ACS is a global leader in providing access to chemistry-related information and research through its multiple databases, peer-reviewed journals and scientific conferences. ACS does not conduct research, but publishes and publicizes peer-reviewed scientific studies. Its main offices are in Washington, D.C., and Columbus, Ohio.


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