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Wang X, Lu K, Yao X, Zhang L, Wang F, Wu D, Peng J, Chen X, Du J, Wei J, Ma J, Chen L, Zou S, Zhang C, Zhang M, Dong H. The Aquaporin TaPIP2;10 Confers Resistance to Two Fungal Diseases in Wheat. PHYTOPATHOLOGY 2021; 111:2317-2331. [PMID: 34058861 DOI: 10.1094/phyto-02-21-0048-r] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plants employ aquaporins (AQPs) of the plasma membrane intrinsic protein (PIP) family to import environmental substrates, thereby affecting various processes, such as the cellular responses regulated by the signaling molecule hydrogen peroxide (H2O2). Common wheat (Triticum aestivum) contains 24 candidate members of the PIP family, designated as TaPIP1;1 to TaPIP1;12 and TaPIP2;1 to TaPIP2;12. None of these TaPIP candidates have been characterized for substrate selectivity or defense responses in their source plant. Here, we report that T. aestivum AQP TaPIP2;10 facilitates the cellular uptake of H2O2 to confer resistance against powdery mildew and Fusarium head blight, two devastating fungal diseases in wheat throughout the world. In wheat, the apoplastic H2O2 signal is induced by fungal attack, while TaPIP2;10 is stimulated to translocate this H2O2 into the cytoplasm, where it activates defense responses to restrict further attack. TaPIP2;10-mediated transport of H2O2 is essential for pathogen-associated molecular pattern-triggered plant immunity (PTI). Typical PTI responses are induced by the fungal infection and intensified by overexpression of the TaPIP2;10 gene. TaPIP2;10 overexpression causes a 70% enhancement in wheat resistance to powdery mildew and an 86% enhancement in resistance to Fusarium head blight. By reducing the disease severities, TaPIP2;10 overexpression brings about >37% increase in wheat grain yield. These results verify the feasibility of using an immunity-relevant AQP to concomitantly improve crop productivity and immunity.
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Affiliation(s)
- Xiaobing Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Kai Lu
- College of Plant Protection, Shandong Agricultural University, Taian, Shandong Province 271018, China
| | - Xiaohui Yao
- College of Plant Protection, Shandong Agricultural University, Taian, Shandong Province 271018, China
| | - Liyuan Zhang
- College of Plant Protection, Shandong Agricultural University, Taian, Shandong Province 271018, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, Shandong Province 271018, China
| | - Fubin Wang
- Institute of Environmental Sciences & Resources and Plant Protection, Jining Academy of Agricultural Sciences, Jining, Shandon Province 272000, China
| | - Degong Wu
- College of Agriculture, Anhui Science and Technology University, Fengyang, Anhui Province 233100, China
| | - Jinfeng Peng
- College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Xiaochen Chen
- College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Junli Du
- College of Agriculture, Anhui Science and Technology University, Fengyang, Anhui Province 233100, China
| | - Jiankun Wei
- College of Plant Protection, Shandong Agricultural University, Taian, Shandong Province 271018, China
| | - Jingyu Ma
- Institute of Environmental Sciences & Resources and Plant Protection, Jining Academy of Agricultural Sciences, Jining, Shandon Province 272000, China
| | - Lei Chen
- College of Plant Protection, Shandong Agricultural University, Taian, Shandong Province 271018, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, Shandong Province 271018, China
| | - Shenshen Zou
- College of Plant Protection, Shandong Agricultural University, Taian, Shandong Province 271018, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, Shandong Province 271018, China
| | - Chunling Zhang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Meixiang Zhang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Hansong Dong
- College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
- College of Plant Protection, Shandong Agricultural University, Taian, Shandong Province 271018, China
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, Shandong Province 271018, China
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