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Sohail H, Noor I, Xu X, Chen X, Yang X. Bending away from salt: a SMB-AUX1 story. Transgenic Res 2024:10.1007/s11248-024-00409-6. [PMID: 39287761 DOI: 10.1007/s11248-024-00409-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Accepted: 08/29/2024] [Indexed: 09/19/2024]
Abstract
The study by Zheng et al. (2024) identifies a NAC transcription factor, SOMBRERO (SMB), localized in the root cap of Arabidopsis, which is essential for root halotropism. SMB influences root halotropism by establishing asymmetric auxin distribution in the lateral root cap (LRC) and maintaining the expression of the auxin influx carrier gene AUX1. This mechanism leads to directional root bending away from high salinity areas. The findings reveal the SMB-AUX1-auxin module as a crucial mediator in root cap signaling and root halotropic response.
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Affiliation(s)
- Hamza Sohail
- School of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Iqra Noor
- School of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Xuewen Xu
- School of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Xuehao Chen
- School of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Xiaodong Yang
- School of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
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Hou X, Lu Z, Yu T, Zhang Y, Yao Q, Zhang C, Niu Y, Liang Q. Two maize homologs of mammalian proton-coupled folate transporter, ZmMFS_1-62 and ZmMFS_1-73, are essential to salt and drought tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 210:108623. [PMID: 38626656 DOI: 10.1016/j.plaphy.2024.108623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/31/2024] [Accepted: 04/08/2024] [Indexed: 04/18/2024]
Abstract
Folates are essential to the maintenance of normal life activities in almost all organisms. Proton-coupled folate transporter (PCFT), belonging to the major facilitator superfamily, is one of the three major folate transporter types widely studied in mammals. However, information about plant PCFTs is limited. Here, a genome-wide identification of maize PCFTs was performed, and two PCFTs, ZmMFS_1-62 and ZmMFS_1-73, were functionally investigated. Both proteins contained the typical 12 transmembrane helixes with N- and C-termini located in the cytoplasm, and were localized in the plasma membrane. Molecular docking analysis indicated their binding activity with folates via hydrogen bonding. Interference with ZmMFS_1-62 and ZmMFS_1-73 in maize seedlings through virus-induced gene silencing disrupted folate homeostasis, mainly in the roots, and reduced tolerance to drought and salt stresses. Moreover, a molecular chaperone protein, ZmHSP20, was found to interact with ZmMFS_1-62 and ZmMFS_1-73, and interference with ZmHSP20 in maize seedlings also led to folate disruption and increased sensitivity to drought and salt stresses. Overall, this is the first report of functional identification of maize PCFTs, which play essential roles in salt and drought stress tolerance, thereby linking folate metabolism with abiotic stress responses in maize.
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Affiliation(s)
- Xiaowan Hou
- Biotechnology Research Institute, Chinese Academy of Agricultural Science, Beijing 100081, China; Key Laboratory of Hainan Province for Postharvest Physiology and Technology of Tropical Horticultural Products, South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China; Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China.
| | - Zhiwei Lu
- Key Laboratory of Hainan Province for Postharvest Physiology and Technology of Tropical Horticultural Products, South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China.
| | - Taifei Yu
- Hunan Provincial Key Laboratory of the Research and Development of Novel Pharmaceutical Preparations, the "Double-First Class" Application Characteristic Discipline of Hunan Province (Pharmaceutical Science), Changsha Medical University, Changsha 410219, China.
| | - Yuanyuan Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Science, Beijing 100081, China; Key Laboratory of Hainan Province for Postharvest Physiology and Technology of Tropical Horticultural Products, South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China.
| | - Quansheng Yao
- Key Laboratory of Hainan Province for Postharvest Physiology and Technology of Tropical Horticultural Products, South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China.
| | - Chunyi Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Science, Beijing 100081, China; National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya, 572000, China.
| | - Yiding Niu
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China.
| | - Qiuju Liang
- Biotechnology Research Institute, Chinese Academy of Agricultural Science, Beijing 100081, China; National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya, 572000, China.
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Gifford ML, Xu G, Dupuy LX, Vissenberg K, Rebetzke G. Root architecture and rhizosphere-microbe interactions. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:503-507. [PMID: 38197460 PMCID: PMC10773993 DOI: 10.1093/jxb/erad488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 12/08/2023] [Indexed: 01/11/2024]
Abstract
Plant roots fulfil crucial tasks during a plant's life. As roots encounter very diverse conditions while exploring the soil for resources, their growth and development must be responsive to changes in the rhizosphere, resulting in root architectures that are tailor-made for all prevailing circumstances. Using multi-disciplinary approaches, we are gaining more intricate insights into the regulatory mechanisms directing root system architecture. This Special Issue provides insights into our advancement of knowledge on different aspects of root development and identifies opportunities for future research.
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Affiliation(s)
- Miriam L Gifford
- School of Life Sciences, The University of Warwick, Coventry, UK
| | - Guohua Xu
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
| | - Lionel X Dupuy
- Department of Conservation of Natural Resources, Neiker, Derio, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Kris Vissenberg
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
- Plant Biochemistry and Biotechnology Lab, Department of Agriculture, Hellenic Mediterranean University, Stavromenos PC 71410, Heraklion, Crete, Greece
| | - Greg Rebetzke
- CSIRO Agriculture and Food, PO Box 1700, Canberra ACT 2601, Australia
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