Relationship Between Arbuscular Mycorrhizas and Plant Growth: Improvement or Depression?
| Autor: | Qiang-Sheng Wu, Li-Hui Lü, Ying-Ning Zou |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Plant growth biology ved/biology fungi ved/biology.organism_classification_rank.species food and beverages Root hair biology.organism_classification 01 natural sciences Arbuscular mycorrhiza 03 medical and health sciences 030104 developmental biology Nutrient Symbiosis Botany Soil water Terrestrial plant Beneficial organism 010606 plant biology & botany |
| Zdroj: | Soil Biology ISBN: 9783319759098 |
| DOI: | 10.1007/978-3-319-75910-4_18 |
| Popis: | Arbuscular mycorrhizal fungi are a kind of beneficial microorganisms in soils, which can establish symbiotic association with ~80% of terrestrial plants, namely, arbuscular mycorrhizas. The symbiosis possesses bidirectional roles in mycorrhizal fungi and host plants: host plants provide photosynthates for the fungal partner; mycorrhizal fungi absorb water and nutrients from soils to plant partner. Mycorrhizal symbiosis has a typical effect on growth performance of host plants. In general, arbuscular mycorrhizas show a promoted effect on plant growth by means of increasing water and nutrient acquisition, soil improvement, phytohormone regulation, and root morphological improvement. Occasionally, no or depressed effects of mycorrhizas on plant growth are reported. The growth depression under mycorrhization may be due to the more carbon expenditure of mycorrhizas, the nutrient status of growth substrates, and root hair status. Essentially, mycorrhizal effects on plant growth are involved in mutualistic or parasitic association. This chapter provides the explanation regarding the improved or depressed effect of arbuscular mycorrhizas in plant growth. The future prospects are proposed. |
| Databáze: | OpenAIRE |
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