Shifting of microbial biodiversity and soil health in rhizomicrobiome of natural forest and agricultural soil

Abstract

Intensive agricultural practices and heavy use of inorganic fertilizers have significantly accelerated soil degradation. Mineralization of the organic matter of soil affects soil health and the abundance of soil beneficial microbes (SBMs) and its dynamics in the soil. The research to investigate the shifting of microbial population and the soil health was conducted in natural forest, agricultural, and degraded ecosystems. The research setting involved randomized block design consisting of six ecosystems, namely, natural forest, agricultural soil (oil palm: 10, 9, 8, and 7 years old), and degraded soils. The soil samples were taken with four replications from rhizomicrobiome of each land use. In the soil health analysis, it was understood that soil beneficial microbes (SBMs) consist of total bacteria, phosphate-solubilizing bacteria, nitrogen-fixing bacteria, total actinomycetes, and total fungi). The results showed that natural forest, oil palm plantation, and degraded land demonstrated a significant effect on the changes in biodiversity of SBM in rhizomicrobiome. The highest population of SBMs was in natural forest followed by the 10-year-old oil palm plantations and the lowest was recorded in degraded soils. These results confirm that the shift of forest ecosystems to agricultural soils will accelerate the degradation and decline of soil health.

Comparison of rhizosphere microbial community of Panax notoginseng under different habitat

“…The rhizosphere soil microorganisms establish a intricate network of microorganisms, which have gained increasing recognition for their structural role in upholding the stability of plant-soil microbial communities. Community network stability refers to the capacity of communities to withstand and recover from both biotic and abiotic disturbances [32][33] . By networks analyzed, We found that the network topological parameters, such as nodes and edges, of the soil microbial community in PN under forest were higher than those in PN field.…”

Alteração da biodiversidade microbiana do solo devido ao cultivo agrícola: uma revisão

“…A mineralização da matéria orgânica do solo afeta a abundância de micro-organismos benéficos do solo e consequentemente a saúde do solo (Anggrainy et. al., 2020), os microrganismos benéficos presentes no solo podem melhorar a aquisição de nutrientes da planta, aumentar sua defesa e captura de nutrientes, tornar as plantas mais tolerantes ao estresse e consequentemente melhorar sua produtividade (Cappelli, et.al., 2022).…”

“…al., 2020), O crescente avanço tecnológico, e a visão de que o meio ambiente é fonte inesgotável de recursos, aliados ao capitalismo e ao impacto da atividade humana no planeta tem sido muito grande que está afetando os ciclos da água, do clima e a biodiversidade do solo. (Testa et al;2020).…”

“…Em estudo realizado pela Universidade de Copenhague em (2012), os cientistas alertaram que a perda da biodiversidade é causada pela degradação do meio ambiente, ocasionando mudanças climáticas, como erosões e desertificação, emissão de poluentes na água e no ar, tudo reflexo da ação humana no ambiente. (Testa et al;2020).…”

An Enterobacter cloacae strain NG-33 that can solubilize phosphate and promote maize growth

“…The biodiversity and composition of soil organisms (phosphate-solubilizing bacteria, nitrogen-fixing bacteria, etc.) are tightly associated with the soil healthy ( Anggrainy et al, 2020 ), and can also induce changes in plant productivity ( Wagg et al, 2014 ). The bacterial community structure are determinative with the changes of soil pH and depth in subarctic tundra soil ( Kim et al, 2014 ).…”