AI Article Synopsis
- - The study examined the root exudates from two banana varieties, one resistant ('Nantianhuang') and one susceptible ('Guijiao No. 6'), to understand their effects on fungi related to Fusarium wilt and soil microorganisms.
- - Findings showed that the resistant variety's exudates reduced fungal abundance and inhibited spore germination of harmful fungi, while the susceptible variety's exudates stimulated mycelia growth and spore germination.
- - Additionally, the resistant variety had higher levels of beneficial amino and organic acids in its exudates, contributing to its ability to inhibit disease, whereas the susceptible variety promoted growth and colonization of harmful fungi.
Article Abstract
Root exudates of banana resistant variety ('Nantianhuang') and susceptible variety ('Guijiao No. 6') to Fusarium wilt were collected by bathing root system to examine the biological effects of root exudates from banana varieties on f. sp. and . We explored the effects of root exudates of different banana varieties on the abundance of soil microorganisms and the growth of f. sp. and . The results showed that root exudates from resistant variety could significantly reduce the abundance of soil fungi and inhibit the spore germination of f. sp. . Root exudates from susceptible variety could significantly stimulate mycelia growth and spores germination, whereas root exudates from the tested banana varieties could significantly increase the growth and biofilm formation of . By dealing with the root exudates of resistant and susceptible varieties, the growth rate of mycelia were 11.28 and 12.28 mm·d, and the germination rate of spores were 34.6% and 79.5%, respectively. After culturing for 12 h, the growth rates of (OD) were 1.27 and 1.14, and the biofilm formation (OD) were 1.11 and 1.30 after static culturing 72 h, respectively. There were significant differences between the values of resistant and susceptible varieties. The colonization amount of in the rhizosphere of susceptible variety was significantly higher than that of resistant variety. The contents of free amino acids and organic acid in root exudates of the resistant variety were higher than that of susceptible variety. The content ratio of acetic acid and proline in the root exudates of resistant variety were 3.7 times and 2.4 times of that of susceptible variety. In conclusion, root exudates of banana resistant variety could inhibit the growth of f. sp. Root exudates from susceptible variety could promote the growth of f. sp. ,while that from the tested banana varieties could all significantly enhance growth, biofilm formation and colonization ability of .
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| http://dx.doi.org/10.13287/j.1001-9332.202007.039 | DOI Listing |
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