Microbe-Friendly Plants Enable Beneficial Interactions with Soil Rhizosphere Bacteria by Lowering Their Defense Responses
The use of plant growth-promoting rhizobacteria presents a promising addition to conventional mineral fertilizer use and an alternative strategy for sustainable agricultural crop production. However, genotypic variations in the plant host may result in variability of the beneficial effects from thes...
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MDPI AG
2024-10-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/13/21/3065 |
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| author | Alexander Arkhipov Ziyu Shao Sean R. Muirhead Muchineripi S. Harry Maria Batool Hooman Mirzaee Lilia C. Carvalhais Peer M. Schenk |
| author_facet | Alexander Arkhipov Ziyu Shao Sean R. Muirhead Muchineripi S. Harry Maria Batool Hooman Mirzaee Lilia C. Carvalhais Peer M. Schenk |
| author_sort | Alexander Arkhipov |
| collection | DOAJ |
| description | The use of plant growth-promoting rhizobacteria presents a promising addition to conventional mineral fertilizer use and an alternative strategy for sustainable agricultural crop production. However, genotypic variations in the plant host may result in variability of the beneficial effects from these plant–microbe interactions. This study examined growth promotion effects of commercial vegetable crop cultivars of tomato, cucumber and broccoli following application with five rhizosphere bacteria. Biochemical assays revealed that the bacterial strains used possess several nutrient acquisition traits that benefit plants, including nitrogen fixation, phosphate solubilization, biofilm formation, and indole-3-acetic acid (IAA) production. However, different host cultivars displayed genotype-specific responses from the inoculations, resulting in significant (<i>p</i> < 0.05) plant growth promotion in some cultivars but insignificant (<i>p</i> > 0.05) or no growth promotion in others. Gene expression profiling in tomato cultivars revealed that these cultivar-specific phenotypes are reflected in differential expressions of defense and nutrient acquisition genes, suggesting that plants can be categorized into “microbe-friendly” cultivars (with little or no defense responses against beneficial microbes) and “microbe-hostile” cultivars (with strong defense responses). These results validate the notion that “microbe-friendly” (positive interaction with rhizosphere microbes) should be considered an important trait in breeding programs when developing new cultivars which could result in improved crop yields. |
| format | Article |
| id | doaj-art-ef53f79eaf4244ae86c3d392b8826c44 |
| institution | OA Journals |
| issn | 2223-7747 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj-art-ef53f79eaf4244ae86c3d392b8826c442025-08-20T02:14:23ZengMDPI AGPlants2223-77472024-10-011321306510.3390/plants13213065Microbe-Friendly Plants Enable Beneficial Interactions with Soil Rhizosphere Bacteria by Lowering Their Defense ResponsesAlexander Arkhipov0Ziyu Shao1Sean R. Muirhead2Muchineripi S. Harry3Maria Batool4Hooman Mirzaee5Lilia C. Carvalhais6Peer M. Schenk7Plant-Microbe Interactions Laboratory, School of Agriculture and Food Sustainability, The University of Queensland, Brisbane, QLD 4072, AustraliaPlant-Microbe Interactions Laboratory, School of Agriculture and Food Sustainability, The University of Queensland, Brisbane, QLD 4072, AustraliaPlant-Microbe Interactions Laboratory, School of Agriculture and Food Sustainability, The University of Queensland, Brisbane, QLD 4072, AustraliaPlant-Microbe Interactions Laboratory, School of Agriculture and Food Sustainability, The University of Queensland, Brisbane, QLD 4072, AustraliaPlant-Microbe Interactions Laboratory, School of Agriculture and Food Sustainability, The University of Queensland, Brisbane, QLD 4072, AustraliaPlant-Microbe Interactions Laboratory, School of Agriculture and Food Sustainability, The University of Queensland, Brisbane, QLD 4072, AustraliaCenter for Horticultural Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Ecosciences Precinct, Brisbane, QLD 4072, AustraliaPlant-Microbe Interactions Laboratory, School of Agriculture and Food Sustainability, The University of Queensland, Brisbane, QLD 4072, AustraliaThe use of plant growth-promoting rhizobacteria presents a promising addition to conventional mineral fertilizer use and an alternative strategy for sustainable agricultural crop production. However, genotypic variations in the plant host may result in variability of the beneficial effects from these plant–microbe interactions. This study examined growth promotion effects of commercial vegetable crop cultivars of tomato, cucumber and broccoli following application with five rhizosphere bacteria. Biochemical assays revealed that the bacterial strains used possess several nutrient acquisition traits that benefit plants, including nitrogen fixation, phosphate solubilization, biofilm formation, and indole-3-acetic acid (IAA) production. However, different host cultivars displayed genotype-specific responses from the inoculations, resulting in significant (<i>p</i> < 0.05) plant growth promotion in some cultivars but insignificant (<i>p</i> > 0.05) or no growth promotion in others. Gene expression profiling in tomato cultivars revealed that these cultivar-specific phenotypes are reflected in differential expressions of defense and nutrient acquisition genes, suggesting that plants can be categorized into “microbe-friendly” cultivars (with little or no defense responses against beneficial microbes) and “microbe-hostile” cultivars (with strong defense responses). These results validate the notion that “microbe-friendly” (positive interaction with rhizosphere microbes) should be considered an important trait in breeding programs when developing new cultivars which could result in improved crop yields.https://www.mdpi.com/2223-7747/13/21/3065beneficial microbebiostimulantmicrobial biofertilizerPGPRplant breedingplant defense |
| spellingShingle | Alexander Arkhipov Ziyu Shao Sean R. Muirhead Muchineripi S. Harry Maria Batool Hooman Mirzaee Lilia C. Carvalhais Peer M. Schenk Microbe-Friendly Plants Enable Beneficial Interactions with Soil Rhizosphere Bacteria by Lowering Their Defense Responses Plants beneficial microbe biostimulant microbial biofertilizer PGPR plant breeding plant defense |
| title | Microbe-Friendly Plants Enable Beneficial Interactions with Soil Rhizosphere Bacteria by Lowering Their Defense Responses |
| title_full | Microbe-Friendly Plants Enable Beneficial Interactions with Soil Rhizosphere Bacteria by Lowering Their Defense Responses |
| title_fullStr | Microbe-Friendly Plants Enable Beneficial Interactions with Soil Rhizosphere Bacteria by Lowering Their Defense Responses |
| title_full_unstemmed | Microbe-Friendly Plants Enable Beneficial Interactions with Soil Rhizosphere Bacteria by Lowering Their Defense Responses |
| title_short | Microbe-Friendly Plants Enable Beneficial Interactions with Soil Rhizosphere Bacteria by Lowering Their Defense Responses |
| title_sort | microbe friendly plants enable beneficial interactions with soil rhizosphere bacteria by lowering their defense responses |
| topic | beneficial microbe biostimulant microbial biofertilizer PGPR plant breeding plant defense |
| url | https://www.mdpi.com/2223-7747/13/21/3065 |
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