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Chen W, Guo W, Zhang C, Zhao Y, Lei Y, Chen C, Wei Z, Dai H. MdLRR-RLK1-MdATG3 module enhances the resistance of apples to abiotic stress via autophagy. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024. [PMID: 39671299 DOI: 10.1111/tpj.17211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2024] [Revised: 11/28/2024] [Accepted: 12/04/2024] [Indexed: 12/15/2024]
Abstract
Apple is an important economic species affected by abiotic stress, such as salt and drought. LRR-RLKs play a key role in plant responses to stress, although their physiological functions under abiotic stress are not yet fully understood. Autophagy is a highly conserved process in eukaryotes, which plays a vital role in drought and salt stress responses. In this study, overexpression of MdLRR-RLK1 in apple promoted plant growth and development and increased salt and drought stress tolerance. MdLRR-RLK1 interacts with MdATG3 in vivo and in vitro, and MdATG3 ubiquitinates and degrades MdLRR-RLK1. Intriguingly, MdLRR-RLK1 and MdATG3 enhance salt and drought tolerance through increasing autophagy. Moreover, MdATG3 interacts with MdATG8F and MdATG8I-like in apple. These findings reveal the interaction between MdLRR-RLK1 and MdATG3, suggesting mechanisms that regulate apple growth and resistance to abiotic stress.
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Affiliation(s)
- Wenjun Chen
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenyang, Liaoning, 110866, China
| | - Wei Guo
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenyang, Liaoning, 110866, China
- Analytical and Testing Center, Shenyang Agricultural University, 120 Dongling Road, Shenyang, Liaoning, 110866, China
| | - Chao Zhang
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenyang, Liaoning, 110866, China
| | - Yi Zhao
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenyang, Liaoning, 110866, China
| | - Yingying Lei
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenyang, Liaoning, 110866, China
| | - Cui Chen
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenyang, Liaoning, 110866, China
| | - Ziwen Wei
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenyang, Liaoning, 110866, China
| | - Hongyan Dai
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenyang, Liaoning, 110866, China
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Liu L, Li X, Guo W, Shi J, Chen W, Lei Y, Ma Y, Dai H. MdWRKY120 Enhance Apple Susceptibility to Alternaria alternata. PLANTS (BASEL, SWITZERLAND) 2022; 11:3389. [PMID: 36501429 PMCID: PMC10004717 DOI: 10.3390/plants11233389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Alternaria alternata (A. alternata) is a common pathogen that greatly influences apples' quantity and quality. However, chemical treatments produce increased health risks along with decreased food and environmental safety. Advancements in plant molecular biology, such as transgenic technology, have increased apple trees' resistance to pathogens and have therefore attracted widespread attention. WRKY transcription factors are involved in abiotic and biotic stress regulation; however, their biological role in non-model plants such as apple, is still unknown. In this investigation, MdWRKY120 was isolated from the 'GL-3' apple to determine its function during Alternaria alternate infection. The MdWRKY120-GFP fusion protein was located in the nucleus. MdWRKY120 in yeast cells exhibited activating transcriptional activity, meaning it is a transcription activator. MdWRKY120 overexpression transgenic plants were more sensitive to A. alternata, while RNAi transgenic plants showed increased resistance to A. alternata. This investigation demonstrates that MdWRKY120 enhances the susceptibility of apples to A. alternata.
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Affiliation(s)
- Lifu Liu
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
- School of Horticulture, Liaoning Vocational College of Ecological Engineering, Shenyang 110101, China
| | - Xiaoming Li
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Wei Guo
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Jiajun Shi
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Wenjun Chen
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Yingying Lei
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Yue Ma
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Hongyan Dai
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
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Wang C, Jiang F, Zhu S. Complex Small RNA-mediated Regulatory Networks between Viruses/Viroids/Satellites and Host Plants. Virus Res 2022; 311:198704. [DOI: 10.1016/j.virusres.2022.198704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 01/16/2022] [Accepted: 01/29/2022] [Indexed: 12/26/2022]
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