AI Article Synopsis
- Global climate change is expected to worsen drought conditions, making it essential to find methods to help plants cope with water scarcity.
- Researchers isolated a drought-tolerant bacterium, identified as Sphingobacterium changzhouense, from Aloe vera roots and studied its impact on maize growth under drought stress.
- Inoculation with S. changzhouense significantly improved various growth metrics and physiological traits of maize, including root and shoot elongation and total antioxidant capacity, suggesting its potential use in enhancing crop resilience in dry environments.
Article Abstract
Drought severity and duration are expected to increase as a result of ongoing global climate change. Therefore, finding solutions to help plants to deal with drought stress and to improve growth in the face of limited water resources is critical. In this study, a drought tolerant- plant growth promoting endophytic bacterium was isolated from Aloe vera roots. It was identified as Sphingobacterium changzhouense based on 16S rRNA gene sequencing and was deposited into NCBI database with accession number (ON944028). The effect of S. changzhouense inoculation on maize growth under drought stress was investigated. The results revealed that inoculation significantly (p ≤ 0.05) enhanced root and shoot elongation by 205 and 176.19% respectively. Photosynthesis rate, stomatal conductance and water use efficiency were improved in inoculated plants. interestingly, inoculation resulted in significant increase in total chlorophyll, total carbohydrates, proline, total proteins, total phenolics and total flavonoids by 64, 31.5, 25.1, 75.07, 83.7 and 65.4% respectively. Total antioxidant capacity of inoculated plants (51.2 mg/g FW) was higher than that of non-inoculated plants (11.87 mg/g FW), which was found to be positively correlated to the levels of phenolics and flavonoids. Our finding suggests that S. changzhouense could be used to improve crop growth and assist plants to resist drought stress in arid agricultural lands.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9616765 | PMC |
| http://dx.doi.org/10.1007/s11274-022-03441-y | DOI Listing |
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