60th Annual Maize Genetics Conference Program and Abstracts March 22 – March 25, 2018 Palais du Grand Large Saint-Malo, France This conference received financial support from: National Science Foundation ANR/Amaizing DuPont Pioneer Syngenta Monsanto National Corn Growers Association KWS SAAT AG Bayer Crop Science AGPM Maiz’Europ BASF Plant Science Agro Paris Tech Caussade semences INRA, BAP department Kenfeng Seed Co Biogemma Euralis Limagrain Maïsadour Promaïs Benson Hill We thank these contributors for their generosity! Table of Contents Cover Page ................................................................................................................... i Contributors ................................................................................................................. ii Table of Contents ......................................................................................................... iii General Information ..................................................................................................... iv From the MGEC.............................................................................................................. v Stewardship of Maize Data........................................................................................... vi Useful Links ............................................................................................................... vii MaGNET Awards ........................................................................................................ viii Program ........................................................................................................................ 1 List of Posters .............................................................................................................. 7 Abstracts: Plenary Addresses ................................................................................................... 19 McClintock Awardee................................................................................................ 23 Short Talks .............................................................................................................. 24 Posters ..................................................................................................................... 57 Author Index ........................................................................................................... 207 Participants .................................................................................................................... 219 History........................................................................................................................... 239 Cover image description Male inflorescence (tassel) of the maize inbred line B73 at anthesis shedding pollen grains. Cover art by Lele Wang University of Regensburg, Germany General Information Meeting Registration Thursday: 12:30 PM to 10:00 PM: Main Lobby Duguay Trouin Friday: 8:00AM to 1:00 PM: Main Lobby Duguay Trouin Meals All meals will be served plated in the Grand Large room, level 1; serving hours as listed in the Program. Coffee, tea, soft drinks and snacks are available at no charge during the breaks that will be held in Poster rooms (levels 2 & 3) and J. Cartier rotunda, level 1. Please wear your nametag as that will give you entrance into the facility as well as the meals. Talks and Posters All Talks will be presented in the Chateaubriand auditorium, level 0. Posters will be presented in the Lamennais room, level 3 and Surcouf rotunda, level 2. Posters should be hung Thursday starting at 3 PM and stay up until Sunday morning, but must be removed by 9 AM on Sunday. During poster sessions, presenters of odd numbered posters are asked to stand by their posters 2:00-3:10 PM on Friday and 3:15-4:30 PM on Saturday. Presenters of even numbered posters should stand by their posters 3:10-4:15 PM on Friday and 2:00-3:15 PM on Saturday. The maize meeting is a forum for presentation and discussion of unpublished material. Photographing or recording of talks and posters is not allowed. Posting information about talks and posters on social media is allowed only if the author has explicitly given permission to do so, which is indicated by the symbol in the abstract book. Hospitality After the evening sessions on Thursday, Friday, and Saturday there will be informal socializing and poster gazing in the Lamennais room, level 3 and Surcouf rotunda, level 2 with refreshments provided until 1 AM (3 free beverages will be offered each evening among a selection of soft drinks, regional beers and wine). Wine & cheese tasting at no charge will be organized on Friday evening. Additionally, on Saturday evening there will be music and dancing. After 1 AM, the Bouvet room, level 1 will be available for continued socializing until 5 AM. This is a “private room” for socializing and professional networking, and it is permissible for alcoholic beverages to be brought in; however, you must stay in this room if you are carrying drinks, and please dispose of all trash and bottles in the room. Steering Committee Please share your suggestions and comments about the meeting with the 2018 Steering Committee Alain Charcosset, Chair .... ([email protected]) Ex officio: Mike Muszynski, co-Chair ([email protected]) Carson Andorf Erich Grotewold .................([email protected]) David Braun Karen McGinnis .................([email protected]) Marty Sachs Jianbing Yan ..................... ([email protected]) Maud Tenaillon, Local Host Natalia de Leon ................ ([email protected]) Sylvia Sousa...................... ([email protected]) Maike Stam ....................... ([email protected]) Andrea Eveland ................ ([email protected]) Thomas Slewinski ............ ([email protected]) Andrea Gallavotti ............. ([email protected]) Stephen Novak ................. ([email protected]) Acknowledgements We warmly thank John Portwood and Carson Andorf for their tremendous efforts in organizing, assembling, and advertising the conference program. We are extremely grateful to Angela Freemyer and her team at the University of Missouri Conference Office and Rozenn Le Guyader at GQE-Le Moulon for helping to organize the conference, handling registration and dealing with a multitude of other issues. Special thanks are also extended to Sophie Fontaine, Aurélie Paris and Delphine Bru and their team at the Palais du Grand Large, for their help in organizing this conference, and to Darwin Campbell and John Portwood for providing AV and other support. Thanks go to Thomas Slewinski, Stephen Novak and Alain Charcosset for their efforts in securing funding to support graduate student attendance at this meeting. Finally, many , many thanks go to Maud Tenaillon for her work as local organizer and Marty Sachs for his wisdom in all things related to the Maize Meeting. iv From the Maize Genetics Executive Committee: Chair: Karen Koch 2020, Paul Chomet 2017, Sherry Flint-Garcia 2017, Shawn Kaeppler 2018, Patrick Schnable 2018, Kathy Newton 2019, Jianming Yu 2019, Natalia de Leon 2020, Tom Brutnell 2021, David Jackson 2021, and two new members to be announced. Awards: The Early Career Maize Genetics Award will be given to an individual that has been in a permanent position for less than 8 years. It is expected that the awardee will have made significant research contributions through genetic studies of maize or related species. (See MaizeGDB) The 2018 Awardee is James Schnable at the University of Nebraska. The Mid-Career Maize Genetics Award will be given to an individual that has been in a permanent position for 9-20 years. The winner will have an outstanding track record of discovery research in maize (or related species) genetics. (See MaizeGDB) The 2018 Awardee is Mike Scanlon at Cornell University. New this year: The R.A. Emerson Award recognizes individuals for their extraordinary lifetime achievements in maize genetics. Recipients of this award shall be leaders in the maize community who have made seminal contributions to our understanding of maize genetics. To be eligible for this award, the nominee should have held a permanent position for over 20 years. (See MaizeGDB) The 2018 Awardee is Ed Coe at the University of Missouri. The award will be presented at the 2019 Maize Genetics Conference in Saint Louis, along with a short overview of Ed Coe’s life and work. The Barbara McClintock Prize for Plant Genetics and Genome Studies has been created to memorialize the unequalled contributions of Dr. McClintock through p roviding recognition to the most outstanding plant geneticists of the present era. In memory of the many contributions of Dr. McClintock, this Prize will be awarded each year to one or more of the most creative minds and productive scientists in the study of plant genome structure, function and evolution, including the analysis of gene regulation and epigenetics. The 2018 Awardee is Rob Martienssen who will present the McClintock Prize Address. The 2019 Awardee will be announced at the meeting and will present the address next year (See MaizeGDB). Defining the maize genetics community: Who are we? A. Maize Genetics Cooperators B. Maize Genetics Conference The Maize Genetics Community: A. Maize Genetics Cooperators. Total 5,000 number is based on the e-mail database 4,033 75 from MaizeGDB.org. The conference 3,063 scientist attendees include meetings held in the 2,500 50 56% US from 2008 to 2017. Each attendee