Effects of Humic Substances on the Growth of <i>Pseudomonas plecoglossicida</i> 2,4-D and Wheat Plants Inoculated with This Strain
Both rhizosphere bacteria and humic substances (HSs) can promote plant growth when applied individually and even greater effects of their combination have been demonstrated. We aimed to elucidate the relative importance of the stimulating effects of HSs on bacterial growth and the effects of the com...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Microorganisms |
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| Online Access: | https://www.mdpi.com/2076-2607/10/5/1066 |
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| author | Arina Feoktistova Margarita Bakaeva Maxim Timergalin Darya Chetverikova Aliya Kendjieva Timur Rameev Gaisar Hkudaygulov Aleksey Nazarov Guzel Kudoyarova Sergey Chetverikov |
| author_facet | Arina Feoktistova Margarita Bakaeva Maxim Timergalin Darya Chetverikova Aliya Kendjieva Timur Rameev Gaisar Hkudaygulov Aleksey Nazarov Guzel Kudoyarova Sergey Chetverikov |
| author_sort | Arina Feoktistova |
| collection | DOAJ |
| description | Both rhizosphere bacteria and humic substances (HSs) can promote plant growth when applied individually and even greater effects of their combination have been demonstrated. We aimed to elucidate the relative importance of the stimulating effects of HSs on bacterial growth and the effects of the combination of bacteria and HSs on plants themselves. The effects of humic (HA) and fulvic acids (FA) (components of humic substances) on the growth of <i>Pseudomonas plecoglossicida</i> 2,4-D in vitro were studied. We also studied the effects of this bacterial strain and HSs applied individually or in combination on the growth of wheat plants. Although the 2,4-D strain showed low ability to use HSs as the sole source of nutrition, the bacterial growth rate was increased by FA and HA, when other nutrients were available. HSs increased root colonization with bacteria, the effect being greater in the case of HA. The effects on roots and shoots increased when bacteria were associated with HSs. FA+ 2,4-D was more effective in stimulating shoot growth, while HA + 2,4-D was in the case of root growth. The latter effect is likely to be beneficial under edaphic stresses. |
| first_indexed | 2024-03-10T03:21:59Z |
| format | Article |
| id | doaj.art-4d4b530b6d934b13bdc4ed7799549ffe |
| institution | Directory Open Access Journal |
| issn | 2076-2607 |
| language | English |
| last_indexed | 2024-03-10T03:21:59Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Microorganisms |
| spelling | doaj.art-4d4b530b6d934b13bdc4ed7799549ffe2023-11-23T12:17:20ZengMDPI AGMicroorganisms2076-26072022-05-01105106610.3390/microorganisms10051066Effects of Humic Substances on the Growth of <i>Pseudomonas plecoglossicida</i> 2,4-D and Wheat Plants Inoculated with This StrainArina Feoktistova0Margarita Bakaeva1Maxim Timergalin2Darya Chetverikova3Aliya Kendjieva4Timur Rameev5Gaisar Hkudaygulov6Aleksey Nazarov7Guzel Kudoyarova8Sergey Chetverikov9Ufa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya 69, 450054 Ufa, RussiaUfa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya 69, 450054 Ufa, RussiaUfa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya 69, 450054 Ufa, RussiaUfa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya 69, 450054 Ufa, RussiaUfa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya 69, 450054 Ufa, RussiaUfa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya 69, 450054 Ufa, RussiaUfa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya 69, 450054 Ufa, RussiaDepartment of Environment and Rational Use of Natural Resources, Faculty of Business Ecosystem and Creative Technologies, Ufa State Petroleum Technological University, ul. Kosmonavtov 1, 450064 Ufa, RussiaUfa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya 69, 450054 Ufa, RussiaUfa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya 69, 450054 Ufa, RussiaBoth rhizosphere bacteria and humic substances (HSs) can promote plant growth when applied individually and even greater effects of their combination have been demonstrated. We aimed to elucidate the relative importance of the stimulating effects of HSs on bacterial growth and the effects of the combination of bacteria and HSs on plants themselves. The effects of humic (HA) and fulvic acids (FA) (components of humic substances) on the growth of <i>Pseudomonas plecoglossicida</i> 2,4-D in vitro were studied. We also studied the effects of this bacterial strain and HSs applied individually or in combination on the growth of wheat plants. Although the 2,4-D strain showed low ability to use HSs as the sole source of nutrition, the bacterial growth rate was increased by FA and HA, when other nutrients were available. HSs increased root colonization with bacteria, the effect being greater in the case of HA. The effects on roots and shoots increased when bacteria were associated with HSs. FA+ 2,4-D was more effective in stimulating shoot growth, while HA + 2,4-D was in the case of root growth. The latter effect is likely to be beneficial under edaphic stresses.https://www.mdpi.com/2076-2607/10/5/1066rhizosphere bacteria<i>Pseudomonas plecoglossicida</i> 2,4-Dhumic substanceshumic and fulvic acidswheat plants |
| spellingShingle | Arina Feoktistova Margarita Bakaeva Maxim Timergalin Darya Chetverikova Aliya Kendjieva Timur Rameev Gaisar Hkudaygulov Aleksey Nazarov Guzel Kudoyarova Sergey Chetverikov Effects of Humic Substances on the Growth of <i>Pseudomonas plecoglossicida</i> 2,4-D and Wheat Plants Inoculated with This Strain Microorganisms rhizosphere bacteria <i>Pseudomonas plecoglossicida</i> 2,4-D humic substances humic and fulvic acids wheat plants |
| title | Effects of Humic Substances on the Growth of <i>Pseudomonas plecoglossicida</i> 2,4-D and Wheat Plants Inoculated with This Strain |
| title_full | Effects of Humic Substances on the Growth of <i>Pseudomonas plecoglossicida</i> 2,4-D and Wheat Plants Inoculated with This Strain |
| title_fullStr | Effects of Humic Substances on the Growth of <i>Pseudomonas plecoglossicida</i> 2,4-D and Wheat Plants Inoculated with This Strain |
| title_full_unstemmed | Effects of Humic Substances on the Growth of <i>Pseudomonas plecoglossicida</i> 2,4-D and Wheat Plants Inoculated with This Strain |
| title_short | Effects of Humic Substances on the Growth of <i>Pseudomonas plecoglossicida</i> 2,4-D and Wheat Plants Inoculated with This Strain |
| title_sort | effects of humic substances on the growth of i pseudomonas plecoglossicida i 2 4 d and wheat plants inoculated with this strain |
| topic | rhizosphere bacteria <i>Pseudomonas plecoglossicida</i> 2,4-D humic substances humic and fulvic acids wheat plants |
| url | https://www.mdpi.com/2076-2607/10/5/1066 |
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