Hopsteiner Announces Wild Genetic Anomalies Discovered in Hops

NEW YORK — Hopsteiner is proud to have helped support Katherine Easterling, a Doctoral Candidate at Florida State University (FSU), in the discovery of a genetic anomaly within domestic and wild hop plants.

Over a year ago, Easterling embarked on a research project to understand the strange genetic phenomena discovered by Dr. Dong Zhang and Nicoli Pitra, scientists at Hopsteiner. Using skills and tools that were developed in maize by Dr. Hank Bass at Florida State University’s Department of Biological Science, Easterling has been working with Dr. Paul Matthews, Senior Research Scientist at Hopsteiner’s Crop Improvement Program.

This past summer, Easterling and Dr. Matthews presented the new findings at the International Brewers Symposium on Hop Aroma and Flavor that was held in Corvallis, OR. Aside from giving a clear and concise talk about the complicated sexual behavior of hop and showing exciting fluorescent movies of chromosome behavior in hops, Easterling won the poster competition for her presentations.

“Having our dynamic researcher working in a world-class maize laboratory was a perfect match for the dynamic complexity of hop breeding genetics,” said Matthews “Dong and Nicholi’s statistical discovery, confirmed into real chromosome behavior in hop sex cells by Katherine, are revolutionary for hop breeding.”

What she discovered after having placed DNA strands from a male sperm cell sample under a laser florescent microscope can only be described as a genetic mystery. At first glance, atypical whole chromosome shapes were observed. At the late meiotic prophase, the chromosomes should have been paired in twos with donut-like shapes — but what was discovered here were chromosomes that were linked together in long chains and rings.

“This observation means that there is a sequence similarity that extends beyond the parental chromosome pairs,” said Easterling. “Although some plants and animals have been reported to demonstrate that type of chromosomal behavior, its considered very abnormal, and the offspring from such strange behavior can be less viable or show unexpected traits.”

“It is essential to understand the aberrant behavior in order to make substantial new progress in hop variety development,” Matthews added.

Easterling recently received the Godfrey Endowment for Botany Travel, which will allow her to go back out into the field next summer and collect wild hops to survey the extent of the genetic phenomena in nature.

“Hopsteiner’s support has allowed me to focus entirely on my research for the past year, and it has been quite an experience,” she added. “One thing that I love about working with hops is that the general public is fascinated by the plant and of course, the beer it makes! But, it also allows me to discuss many different topics from molecular biology, meiosis, and cytogenetics, to environmental issues like climate change and conservation.”

Hopsteiner’s outstanding breeding program is known for creating agronomically superior hop strains with desirable characteristics that brewers seek to give unique flavors and aroma to their beers. The program was formed to develop new, top-quality, “grower-friendly,” disease-resistant, pest-resistant, hop varieties that defy comparison and are easier to grow. Using less plant protection material, water and land to produce a crop is a high priority. Many of Hopsteiner’s top performing experimental hop varieties from this program have become commercially available, such as the popular Lemondrop™, Eureka! ™, and Denali™ hops.

To learn more about Katherine Easterling’s discovery and read the full research report, https://dl.sciencesocieties.org/publications/tpg/first-look/pdf/plantgenome2017.04.0032.pdf. Learn more about Hopsteiner and hop varieties at Hopsteiner.com.


Hopsteiner (S.S. Steiner) was founded in 1845 in Laupheim, Germany. Today, Hopsteiner is one of the largest international hop growing, trading, breeding, and processing firms in the world with operations in nine major regions.

We continue to invest in new technology to remain at the forefront of quality, efficiency and sustainable practices. Hopsteiner is registered with EcoVadis and Sedex to ensure the transparency of our sustainability practices. For more information, please visit hopsteiner.com.

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