Comparison of Soil Microbial Composition in Rhizospheres Between Wilt Disease-Resistant and Susceptible Melon Varieties

To screen out the bio-control soil microorganisms for preventing melon wilt, soil microbial compositions in rhizospheres between wilt-resistant and susceptible melon varieties were analyzed. The results showed that the soil fungal richness in rhizospheres of wilt-resistant melon varieties (MT) was significantly higher than that of wilt-susceptible melon varieties (MS). Additionally, in comparison with MS, soil bacterial compositions, such as Proteobacteria, Bacteroidota, <i>Acidibacter, Streptomyces</i>, etc., and the soil fungal compositions, such as <i>Penicillium</i>, <i>Derxomyces</i>, <i>Aspergillus</i>, and <i>Talaromyces</i>, enriched; also, <i>Trichoderma</i>, <i>Gibellulopsis</i>, and <i>Pseudallescheria</i> decreased in rhizospheres of wilt-resistant melon varieties (MT). Moreover, <i>Mycothermus</i>, <i>Zopfiella</i>, and <i>Cladorrhinum</i> were the unique soil-dominant fungal genera in rhizospheres of MT. All the above results suggested that the soil bacterial communities, such as Proteobacteria, Bacteroidota, Acidibacter, <i>Streptomyces</i>, etc., and the soil fungal communities, such as <i>Penicillium</i>, <i>Derxomyces</i>, <i>Aspergillus</i>, <i>Talaromyces Mycothermus</i>, <i>Zopfiella</i>, and <i>Cladorrhinum</i>, could be speculated as the potential soil bio-control microorganisms for preventing melon wilt.