Trichoderma guizhouense NJAU4742 augments morphophysiological responses, nutrient availability and photosynthetic efficacy of ornamental Ilex verticillata.

This article focuses on the effects of the filamentous fungus Trichoderma guizhouense NJAU4742 on the growth, photosynthesis, nutrient content, and substrate properties of winterberry holly (Ilex verticillata), a deciduous shrub valued for its ornamental and medicinal uses. The study demonstrated that higher dosages (10% and 15% spore suspension) of T. guizhouense significantly enhanced root and shoot development, photosynthetic efficiency, and the total nitrogen, phosphorus, and potassium contents in plant tissues after 75 days of treatment. Additionally, these treatments improved the physicochemical properties of the growth substrate, including pH, electrical conductivity, and enzymatic activities of urease and invertase, which are linked to nutrient cycling. The findings suggest that T. guizhouense NJAU4742 is a promising eco-friendly biostimulant and biofertilizer for sustainable cultivation of I. verticillata, potentially reducing reliance on agrochemicals.