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- Title
稻镰状瓶霉促进水稻生长的机制.
- Authors
苏珍珠; 冯晓晓; 汪彦欣; 刘小红; 章初龙; 林福呈
- Abstract
Falciphora oryzae, dark septate endophyte isolated from wild rice root, has effects of promoting growth and preventing disease of rice. The purpose of this study is to explore the mechanism underlying growth promotion. The rice seeds were co-cultured with F. oryzae plugs (4/dish) on plates. The growth indicators, nutrient element content and expression of genes related to nutrient absorption were detected. Under greenhouse cultivation condition, the rice was co-cultured with F. oryzae fertilizer in pots (60g/pot) and the agronomic characters were determined. The results showed that the plant height, leaf width and stem diameter of rice seedlings increased significantly after applying F. oryzae on plates, while the root length did not change. F. oryzae could promote the absorption of nutrient elements by rice roots, increase the content of N, P, K, S, Fe and Mg elements in shoots and roots, and induce significant upregulated expression of genes involved in nutrient element uptake, such as OsPTR9, OsAMT3;2, OsPT4, OsSULTR3;1, OsMRS2-8, OsHAK16, OsYSL15 and OsIRO2. Pot experiments showed that various agronomic characters of rice, including leaf width, stem diameter, plant fresh weight, plant dry weight, chlorophyll content and photosynthetic intensity, were significantly improved. It was concluded that root colonization of F. oryzae could induce up-regulated expression of nutrient-element absorption related genes, thereby stimulating the uptake of nutrient-element by roots, and promoting the growth of rice plants.
- Subjects
WILD rice; RICE diseases &; pests; NUTRIENT uptake; PLANT drying; RICE; PLANT growth; SEEDLINGS
- Publication
Mycosystema, 2019, Vol 38, Issue 11, p2007
- ISSN
1672-6472
- Publication type
Article
- DOI
10.13346/j.mycosystema.190246