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Yao X, Mu Y, Zhang L, Chen L, Zou S, Chen X, Lu K, Dong H. AtPIP1;4 and AtPIP2;4 Cooperatively Mediate H 2O 2 Transport to Regulate Plant Growth and Disease Resistance. Plants (Basel) 2024; 13:1018. [PMID: 38611547 PMCID: PMC11013698 DOI: 10.3390/plants13071018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/22/2024] [Accepted: 04/01/2024] [Indexed: 04/14/2024]
Abstract
The rapid production of hydrogen peroxide (H2O2) is a hallmark of plants' successful recognition of pathogen infection and plays a crucial role in innate immune signaling. Aquaporins (AQPs) are membrane channels that facilitate the transport of small molecular compounds across cell membranes. In plants, AQPs from the plasma membrane intrinsic protein (PIP) family are utilized for the transport of H2O2, thereby regulating various biological processes. Plants contain two PIP families, PIP1s and PIP2s. However, the specific functions and relationships between these subfamilies in plant growth and immunity remain largely unknown. In this study, we explore the synergistic role of AtPIP1;4 and AtPIP2;4 in regulating plant growth and disease resistance in Arabidopsis. We found that in plant cells treated with H2O2, AtPIP1;4 and AtPIP2;4 act as facilitators of H2O2 across membranes and the translocation of externally applied H2O2 from the apoplast to the cytoplasm. Moreover, AtPIP1;4 and AtPIP2;4 collaborate to transport bacterial pathogens and flg22-induced apoplastic H2O2 into the cytoplasm, leading to increased callose deposition and enhanced defense gene expression to strengthen immunity. These findings suggest that AtPIP1;4 and AtPIP2;4 cooperatively mediate H2O2 transport to regulate plant growth and immunity.
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Affiliation(s)
- Xiaohui Yao
- National Key Laboratory of Wheat Improvement, College of Plant Protection, Shandong Agricultural University, Taian 271018, China
| | - Yanjie Mu
- National Key Laboratory of Wheat Improvement, College of Plant Protection, Shandong Agricultural University, Taian 271018, China
- Qingdao King Agroot Crop Science, Qingdao 266071, China
| | - Liyuan Zhang
- National Key Laboratory of Wheat Improvement, College of Plant Protection, Shandong Agricultural University, Taian 271018, China
| | - Lei Chen
- National Key Laboratory of Wheat Improvement, College of Plant Protection, Shandong Agricultural University, Taian 271018, China
| | - Shenshen Zou
- National Key Laboratory of Wheat Improvement, College of Plant Protection, Shandong Agricultural University, Taian 271018, China
| | - Xiaochen Chen
- National Key Laboratory of Wheat Improvement, College of Plant Protection, Shandong Agricultural University, Taian 271018, China
| | - Kai Lu
- National Key Laboratory of Wheat Improvement, College of Plant Protection, Shandong Agricultural University, Taian 271018, China
| | - Hansong Dong
- National Key Laboratory of Wheat Improvement, College of Plant Protection, Shandong Agricultural University, Taian 271018, China
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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: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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Zhang L, Chen L, Dong H. Plant Aquaporins in Infection by and Immunity Against Pathogens - A Critical Review. Front Plant Sci 2019; 10:632. [PMID: 31191567 PMCID: PMC6546722 DOI: 10.3389/fpls.2019.00632] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 04/26/2019] [Indexed: 05/18/2023]
Abstract
Plant aquaporins (AQPs) of the plasma membrane intrinsic protein (PIP) family face constant risk of hijack by pathogens aiming to infect plants. PIPs can also be involved in plant immunity against infection. This review will utilize two case studies to discuss biochemical and structural mechanisms that govern the functions of PIPs in the regulation of plant infection and immunity. The first example concerns the interaction between rice Oryza sativa and the bacterial blight pathogen Xanthomonas oryzae pv. oryzae (Xoo). To infect rice, Xoo uses the type III (T3) secretion system to secrete the proteic translocator Hpa1, and Hpa1 subsequently mediates the translocation of T3 effectors secreted by this system. Once shifted from bacteria into rice cells, effectors exert virulent or avirulent effects depending on the susceptibility of the rice varieties. The translocator function of Hpa1 requires cooperation with OsPIP1;3, the rice interactor of Hpa1. This role of OsPIP1;3 is related to regulatory models of effector translocation. The regulatory models have been proposed as, translocon-dependent delivery, translocon-independent pore formation, and effector endocytosis with membrane protein/lipid trafficking. The second case study includes the interaction of Hpa1 with the H2O2 transport channel AtPIP1;4, and the associated consequence for H2O2 signal transduction of immunity pathways in Arabidopsis thaliana, a non-host of Xoo. H2O2 is generated in the apoplast upon induction by a pathogen or microbial pattern. H2O2 from this source translocates quickly into Arabidopsis cells, where it interacts with pathways of intracellular immunity to confer plant resistance against diseases. To expedite H2O2 transport, AtPIP1;4 must adopt a specific conformation in a number of ways, including channel width extension through amino acid interactions and selectivity for H2O2 through amino acid protonation and tautomeric reactions. Both topics will reference relevant studies, conducted on other organisms and AQPs, to highlight possible mechanisms of T3 effector translocation currently under debate, and highlight the structural basis of AtPIP1;4 in H2O2 transport facilitated by gating and trafficking regulation.
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Affiliation(s)
- Liyuan Zhang
- Plant Immunity Research Group, National Key Laboratory of Crop Science, Department of Plant Pathology, Shandong Agricultural University, Tai’an, China
| | - Lei Chen
- Plant Immunity Research Group, National Key Laboratory of Crop Science, Department of Plant Pathology, Shandong Agricultural University, Tai’an, China
| | - Hansong Dong
- Plant Immunity Research Group, National Key Laboratory of Crop Science, Department of Plant Pathology, Shandong Agricultural University, Tai’an, China
- Plant Immunity Laboratory, Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China
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