May 23, 2023

Upstream of the dimmer switch

AHRI researcher Qin Yu recently teamed up with a team of Chinese scientists to show that a case of metabolic resistance in Barnyard grass in China is likely associated with epigenetics. There were no changes to the genetic code of the plant, but there were changes in the expression of a specific P450 gene.

Read More
Dr Qin Yu and Professor Lang Pan
AHRI Insight

February 1, 2021

We’ve cracked the P450 code

About 35 years ago a ryegrass population that had been sprayed several times with Hoegrass® (Diclofop) became resistant to that herbicide and cross resistant to Glean (chlorsulfuron) before Glean® or any other ALS herbicide had ever been used in Australia.

P450 enzymes were suspected to be the cause of this cross resistance but it has taken until now to get the definitive evidence.

A very patient group of researchers led by Heping Han from AHRI, including researchers from Bayer and Zheijiang University in China have identified the P450 gene responsible for cross resistance to herbicides of at least five modes of action.

Read More
AHRI Insight
Get access to short and sharp insights into the world of more crop, fewer weeds with AHRI Insight.
Subscribe Now