| Study on enhancing drought resistance in wheat using the rhizosphere growth\|promoting bacterium XNT6-1 |
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| DOI：10.7606/j.issn.1000-7601.2025.02.09 |
| Key Words: wheat rhizosphere growth\|promoting bacteria drought resistance growth promoting ability physiological characteristics |
| Author Name | Affiliation | | CUI Tianjiao | College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | XV Hong | College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | LI Quanshun | College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | XIONG Qingzhen | College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | LIU Huawei | College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Fusarium proliferatum XNT6-1, obtained from the rhizosphere isolation and identification of ‘Tongmai 6’ in the previous stage, was used as the experimental strain. Tongmai 6 was used as the material for the seed germination test, with four water treatments applied through a pot test involving artificial weighing and water control: normal watering (no drought, ND), low drought (LD), moderate drought (MD), and severe drought (SD). The effects of strain XNT6-1 on drought resistance of wheat seeds and seedlings were studied by analyzing seed germination and seedling physiological and biochemical characteristics under drought stress. In vitro, XNT6-1 was found to have a strong drought tolerance and the ability to produce iron carrier, amylase, protease and lipase. Under certain drought conditions, the leaf length and root length of wheat seed at the late stage of germination were significantly increased by 20.4% and 17.1%, respectively, after soaking in XNT6-1 culture medium. Under moderate drought stress, XNT6-1 inoculation significantly increased fresh mass, dry mass, plant height and root length of wheat seedlings by 16.0%, 20.8%, 19.5% and 23.2%, respectively. Under severe drought stress, XNT6-1 inoculation significantly increased fresh mass, dry mass, plant height and root length of wheat seedlings by 36.0%, 47.0%, 32.4% and 37.3%, respectively. The rhizosphere growth\|promoting bacterium XNT6-1 plays a significant role in alleviating drought stress in plants and is an excellent strain for drought resistance and growth promotion, with promising agricultural applications. |
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