Laboratory of Ecology and Plant Science, School of Biosciences, Mahatma Gandhi University, Athirampuzha 686560, India.
School of Biosciences, Mahatma Gandhi University, Athirampuzha 686560, India.
J Appl Microbiol. 2024 Oct 3;135(10). doi: 10.1093/jambio/lxae256.
This study examined the diversity of arbuscular mycorrhizal fungi (AMF), mean spore density (MSD), and root colonization in relation to factors such as agroclimatic zones, rice varieties and soil types in paddy fields of South India. The aim was to understand how these factors influence AMF association in rice, facilitating their effective use as a biological tool in paddy cultivation.
AMF were identified through light microscopy of spores, while MSD and percentage-root-length colonization (PRLC) were measured using standard methods. Correlation and principal component analyses were performed to explore the interrelationships between AMF characteristics and various environmental, soil, and plant variables. Sixteen AMF species were identified across 29 rice varieties from three agroclimatic zones, 6 soil orders, and 18 soil series over 2 seasons. Notably, 70% of chemicalized rice fields lacked AMF spores, and only 50% exhibited root colonization. This study offers new insights into the role of AMF in rice cultivation.
The AMF diversity and root colonization in relation to environmental variables underscore their significant impact on AMF in particular crop fields.
本研究考察了印度南部稻田中丛枝菌根真菌（AMF）的多样性、孢子平均密度（MSD）和根系定殖率与农业气候带、水稻品种和土壤类型等因素的关系。目的是了解这些因素如何影响水稻中的 AMF 共生关系，从而促进将其有效用作稻田种植的生物工具。
通过孢子的光镜观察鉴定 AMF，使用标准方法测量 MSD 和根长定殖率（PRLC）。进行了相关性和主成分分析，以探讨 AMF 特征与各种环境、土壤和植物变量之间的相互关系。在两个季节中，从三个农业气候带、6 个土纲和 18 个土系的 29 个水稻品种中鉴定出了 16 种 AMF 物种。值得注意的是，70%的化学化稻田缺乏 AMF 孢子，只有 50%的稻田表现出根系定殖。本研究为 AMF 在水稻种植中的作用提供了新的见解。
与环境变量相关的 AMF 多样性和根系定殖率强调了它们对特定作物领域中 AMF 的重要影响。
