Purdue Research Foundation

Corteva Agriscience LLC

Jianxin Ma

Rajat Aggarwal

Oswald Crasta

Maqsood Rehman

Bo Ren

Yonghe Bai

Joshua C Fitzgerald

Ananta Acharya

Chunbao Zhang

Liyang Chen

Weidong Wang

Feng Lin

Jonathan Myrvold

Jieqing Ping

Jingbo Duan

Xutong Wang

Rhizobial infection is the key process for initiating symbiotic nitrogen-fixing root nodules in legumes, which requires specific recognition of signal molecules produced by the bacteria and their hosts. Here, it is established that rhizobial tRNA-derived small RNA fragments (tRFs) are crucial signal molecules modulating host nodulation, which uncovers a bacterial small RNA-mediated mechanism for prokaryote-eukaryote interaction. Transgenic plants are also provided that express a construct encoding rhizobial-derived tRNA, which is subsequently cleaved to produce artificial tRFs. Constructs and methods of producing the same are also provided, as well as modifications for repressing a mechanism for the negative regulation of nodulation present within plants.

Rhizobial tRNA-derived small RNAs and uses thereof for regulating plant nodulation

Provided are compositions comprising polynucleotides encoding Rps genes, and soybean plants or soybean seeds comprising the compositions and exhibiting resistance to. Additionally, various methods for employing the polynucleotides to increase resistance toare also provided herein.

Compositions and methods to increase resistance to phytophthora in soybean

The present subject matter relates to methods and compositions for identifying soybean plants that having increasedroot and stem rot resistance. The methods use molecular markers to identify and to select plants with increasedroot and stem rot resistance or to identify and deselect plants with decreasedroot and stem rot resistance. Soybean plants generated by the methods disclosed are also a feature of the present subject matter.

Genetic locus associated with phytophthora root and stem rot in soybean

Growing community of inventors

West Lafayette, IN, United States of America

Jianxin Ma