|
1
|
Piromyou P, Nguyen HP, Songwattana P, Boonchuen P, Teamtisong K, Tittabutr P, Boonkerd N, Alisha Tantasawat P, Göttfert M, Okazaki S, Teaumroong N. The Bradyrhizobium diazoefficiens type III effector NopE modulates the regulation of plant hormones towards nodulation in Vigna radiata. Sci Rep 2021; 11:16604. [PMID: 34400661 PMCID: PMC8367979 DOI: 10.1038/s41598-021-95925-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 08/02/2021] [Indexed: 11/18/2022] Open
Abstract
Host-specific legume-rhizobium symbiosis is strictly controlled by rhizobial type III effectors (T3Es) in some cases. Here, we demonstrated that the symbiosis of Vigna radiata (mung bean) with Bradyrhizobium diazoefficiens USDA110 is determined by NopE, and this symbiosis is highly dependent on host genotype. NopE specifically triggered incompatibility with V. radiata cv. KPS2, but it promoted nodulation in other varieties of V. radiata, including KPS1. Interestingly, NopE1 and its paralogue NopE2, which exhibits calcium-dependent autocleavage, yield similar results in modulating KPS1 nodulation. Furthermore, NopE is required for early infection and nodule organogenesis in compatible plants. Evolutionary analysis revealed that NopE is highly conserved among bradyrhizobia and plant-associated endophytic and pathogenic bacteria. Our findings suggest that V. radiata and B. diazoefficiens USDA110 may use NopE to optimize their symbiotic interactions by reducing phytohormone-mediated ETI-type (PmETI) responses via salicylic acid (SA) biosynthesis suppression.
Collapse
Affiliation(s)
- Pongdet Piromyou
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Hien P Nguyen
- Institute of Global Innovation Research (IGIR), Tokyo University of Agriculture and Technology (TUAT), Fuchu, Tokyo, 183-8538, Japan.,Agricultural Research Service (ARS), The U.S. Department of Agriculture (USDA), Beltsville Agricultural Research Center (BARC), Beltsville, MD, 20705, USA
| | - Pongpan Songwattana
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Pakpoom Boonchuen
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Kamonluck Teamtisong
- The Center for Scientific and Technological Equipment, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Panlada Tittabutr
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Nantakorn Boonkerd
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Piyada Alisha Tantasawat
- School of Crop Production Technology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Michael Göttfert
- Institut Für Genetik, Technische Universität Dresden, Helmholtzstrasse 10, 01062, Dresden, Germany
| | - Shin Okazaki
- Graduate School of Agriculture, TUAT, Fuchu, Tokyo, 183-8509, Japan.
| | - Neung Teaumroong
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand.
| |
Collapse
|