Regulation of photosynthetic material production by inter-root microbial extinction and metabolic pathways in sorghum under different nitrogen application patterns

Abstract

The development of nitrogen fertilizer green and efficient application technology by exploring the mechanism of efficient sorghum N use is important for sustainable development of sorghum industry as well as barren marginal land development and utilization. This study was conducted in 2018, 2019, and 2020 at Shenyang, China, using the nitrogen-efficient sorghum variety Liaonian No. 3 as material. The correlation between soil microbial species, diversity, and metabolic pathways with photosynthetic parameters and yield traits was analyzed to elucidate the mechanisms of nitrogen utilization and photosynthetic material production in sorghum under four fertilizer application patterns. The results showed that 17 populations of soil inter-root microorganisms were active in the organic fertilizer + 0 kg per hm2 of nitrogen (N0Y) model, and the abundance of two key populations, Comamonadaceae and Ellin5301, was significantly increased. Soil microorganisms regulated sorghum growth mainly through 30 pathways, focus including ko00540, ko00471, ko00072 and ko00550, of which ko02030 (Bacterial chemotaxis) and ko00072 (Synthesis and degradation of ketone bodies) played the most critical role. The functional analysis of soil microbial populations revealed that N0Y fertilizer model significantly reduced the intracellular trafficking, secretion. In addition, vesicular transport of microorganisms, amino acid transport and metabolism and nucleotide transport and metabolism played a key role in the regulation of population function. Overall, the N0Y model of N-efficient sorghum can achieve high levels of photosynthetic material production and higher yield formation through regulation of population activities and metabolic pathways of loamy microorganisms, resulting in reduced chemical N application and efficient green production of sorghum.

Nutritional and microbiological effects of vermicompost tea in hydroponic cultivation of maple peas (Pisum sativum var. arvense L.)

“…These microbes have been studied extensively for their role in plant health, and as more is learned about the processes that occur in the inter‐roots, these relationships can begin to be leveraged to increase plant growth in an environmentally sustainable manner (Lin et al, 2017 ; Ma et al, 2022 ). Harnessing the ability of microbes to provide essential micro‐ and macronutrients to plants is an ongoing goal of inter‐root plant microbial research (Fei et al, 2022 ; Tkacz & Poole, 2015 ). Inasmuch as plant roots are critical for nutrient acquisition and productivity, however, most literature knowledge remains limited on the microorganisms in the soil, leaving a void about the inter‐root microbial communities in hydroponic cultivation.…”

Analysis of bacterial and fungal community structure in Panax notoginseng rhizosphere samples from different locations

“…The inter-rhizosphere of medicinal plants is a special microecosystem of plant-soil-microbe interactions [20]. By secreting various root exudates, including sugar, protein, organic acid, and various secondary metabolites, plant roots provide nutrients required for growth of rhizosphere microorganisms, and thus can affect the composition and diversity of the associated microbial community [21,22]. The composition and diversity of rhizosphere microbial communities are essential to maintain soil productivity and plant health [23].…”