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Norvienyeku J, Zhong Z, Lin L, Dang X, Chen M, Lin X, Zhang H, Anjago WM, Lin L, Abdul W, Wang Z. Methylmalonate-semialdehyde dehydrogenase mediated metabolite homeostasis essentially regulate conidiation, polarized germination and pathogenesis in Magnaporthe oryzae. Environ Microbiol 2017; 19:4256-4277. [PMID: 28799697 DOI: 10.1111/1462-2920.13888] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 06/22/2017] [Accepted: 08/05/2017] [Indexed: 11/28/2022]
Abstract
Plants generate multitude of aldehydes under abiotic and biotic stress conditions. Ample demonstrations have shown that rice-derived aldehydes enhance the resistance of rice against the rice-blast fungus Magnaporthe oryzae. However, how the fungal pathogen nullifies the inhibitory effects of host aldehydes to establish compatible interaction remains unknown. Here we identified and evaluated the in vivo transcriptional activities of M. oryzae aldehyde dehydrogenase (ALDH) genes. Transcriptional analysis of M. oryzae ALDH genes revealed that the acetylating enzyme Methylmalonate-Semialdehyde Dehydrogenase (MoMsdh/MoMmsdh) elevated activities during host invasion and colonization of the fungus. We further examined the pathophysiological importance of MoMSDH by deploying integrated functional genetics, and biochemical approaches. MoMSDH deletion mutant ΔMomsdh exhibited germination defect, hyper-branching of germ tube and failed to form appressoria on hydrophobic and hydrophilic surface. The MoMSDH disruption caused accumulation of small branch-chain amino acids, pyridoxine and AMP/cAMP in the ΔMomsdh mutant and altered Spitzenkörper organization in the conidia. We concluded that MoMSDH contribute significantly to the pathogenesis of M. oryzae by regulating the mobilization of Spitzenkörper during germ tube morphogenesis, appressoria formation by acting as metabolic switch regulating small branch-chain amino acids, inositol, pyridoxine and AMP/cAMP homeostasis.
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Affiliation(s)
- Justice Norvienyeku
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Fujian-Taiwan Joint Center for Ecological Control of Crop Pests and College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhenhui Zhong
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Fujian-Taiwan Joint Center for Ecological Control of Crop Pests and College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lili Lin
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Fujian-Taiwan Joint Center for Ecological Control of Crop Pests and College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xie Dang
- Fujian-Taiwan Joint Center for Ecological Control of Crop Pests and College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Meilian Chen
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Fujian-Taiwan Joint Center for Ecological Control of Crop Pests and College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaolian Lin
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Fujian-Taiwan Joint Center for Ecological Control of Crop Pests and College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Honghong Zhang
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wilfred M Anjago
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lianyu Lin
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Fujian-Taiwan Joint Center for Ecological Control of Crop Pests and College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Waheed Abdul
- Fujian-Taiwan Joint Center for Ecological Control of Crop Pests and College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zonghua Wang
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Fujian-Taiwan Joint Center for Ecological Control of Crop Pests and College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,College of Ocean Science Minjiang University, Fuzhou 350108, China
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Pang X, Zheng Y, Qiao X, Mao Q, Ma Q, Ye R. Improvement of lincomycin production by mutant selection and metabolic regulation. Prep Biochem Biotechnol 2017; 47:639-643. [DOI: 10.1080/10826068.2016.1207083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Xuewei Pang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Yitao Zheng
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Xianting Qiao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Quangui Mao
- Topfond Pharmaceutical Co., Ltd., Henan, China
| | - Qian Ma
- Topfond Pharmaceutical Co., Ltd., Henan, China
| | - Ruifang Ye
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
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