Improvement in Soil Physical, Chemical and Microbiological Properties during Cropping Cycles under Different Nutrient Managements in Western Himalayas

Parmar, D.K.; Thakur, D.R.

doi:10.20546/ijcmas.2017.606.057

Cited by 1 publication

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Extensive studies have confirmed that the diversity and composition of soil bacterial communities are related to a variety of environmental factors, including biotic and abiotic factors, such as fertility, aeration conditions, texture, temperature, soil moisture and pH value (Cesco et al, 2012; Rodríguez‐Blanco et al, 2015; Shen et al, 2013; Yao et al, 2018). These biotic and abiotic factors normally lead to alterations of the physical and chemical properties of soil and nutrient levels, which are closely related to the diversity of soil bacteria (Fan et al, 2017; Parmar & Thakur, 2017; Stutter & Richards, 2012). Meyer et al (2013) suggested that the availability of inorganic N changed the abundances of denitrifiers, nitrifiers and N‐fixing microorganisms among different types of land‐use intensity in grassland ecosystems.…”

Section: Discussionmentioning

confidence: 99%

Soil fungal and bacterial communities are altered by the incorporation of leaf litter containing a fungal endophyte

Jin

Wei

White

et al. 2022

European J Soil Science

View full text Add to dashboard Cite

Litter decomposition plays a key role in nutrient cycling across ecosystems. The presence of Epichloë endophytes in grass plants affects litter decomposition. The overall effects of leaf litter containing Epichloë endophytes on the chemical and biological properties in non-rhizosphere soils have not previously been examined.The current study is aimed to understand the effect of direct incorporation of leaf litter from Epichloë endophyte-infected perennial ryegrass (Lolium perenne) on soil chemical characteristics, and fungal and bacterial biodiversity. Firstly, fresh leaf litter of the endophyte Epichloë festucae var. lolii-infected (E+) and endophyte-free (EÀ) L. perenne were incorporated into the soil, and then samples were collected from E+ and EÀ litter incorporated soil at T 0 , T 1 , T 2 and T 3 (0, 120, 240 and 360 days) for chemical and sequencing analyses. The Epichloë-containing leaf litter incorporation changed the soil microbial environment by enhancing the soil organic carbon (SOC), total nitrogen (TN), total phosphorus, NH 4 + -N and NO 3 À -N contents, and acidifying soil pH. The endophyte had stronger effects on soil bacteria than soil fungi when the litter was determined with and without the endophyte. Litter containing the Epichloë endophyte significantly increased the absolute abundance of the 16S rRNA gene and relative abundances of the Actinobacteria, Nitrospirae and Gemmatimonadetes, while significantly decreasing the relative abundances of the Planctomycetes and Rokubacteria and the diversity in soil bacteria community. There was no significant effect of endophytecontaining leaf litter incorporation on the absolute abundance and diversity of the soil fungal community except the increment in the relative abundance of Rozellomycota. Soil pH and the SOC-to-TN ratio (C:N) were the main factors influencing the soil bacterial community, and the presence of E. festucae var. lolii was directly and positively related to the soil bacterial diversity. The current study established that Epichloë endophyte-infection altered the abundance and diversity of the soil bacterial community by affecting leaf litter quality and increasing soil chemical properties after litter incorporation.Yuanyuan Jin and Xuekai Wei contributed equally to this study.Yuanyuan Jin and Xuekai Wei should be considered the joint first author.

show abstract