Effect of elevated O3 on rhizospheric enzymatic activities of ozone sensitive and tolerant wheat cultivars
| Autor: | Madhoolika Agrawal, Adeeb Fatima, Shashi Bhushan Agrawal, Aditya Abha Singh |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Rhizosphere
biology Urease Chemistry food and beverages Soil Science Biomass 04 agricultural and veterinary sciences Cellulase 010501 environmental sciences 01 natural sciences Horticulture Germination 040103 agronomy & agriculture biology.protein 0401 agriculture forestry and fisheries Amylase Cultivar Agronomy and Crop Science Nitrogen cycle 0105 earth and related environmental sciences |
| Zdroj: | Archives of Agronomy and Soil Science. 64:1768-1776 |
| ISSN: | 1476-3567 0365-0340 |
| DOI: | 10.1080/03650340.2018.1448929 |
| Popis: | Tropospheric ozone (O3) is considered harmful to agriculture production and soil community. Wheat cultivars HD 2987 (O3 sensitive) and Kharchiya 65 (O3 tolerant) were grown under ambient and elevated (ambient + 30 ppb) levels of O3 (EO) using open top chambers, and microbial biomass and enzymatic activities were investigated in soil rhizosphere. Elevated O3 declined soil enzymatic activities related to carbon cycling viz. β-glucosidase, cellobiohydrolase, cellulase and amylase more in sensitive cultivar compared to tolerant. Enzymatic activities linked to nitrogen cycling like N-acetyl-glucosaminidase and urease decreased while protease and glycine aminopeptidase increased. Microbial biomass carbon and nitrogen declined more in sensitive cultivar by 11.1 and 21.2%, respectively. Root biomass reduced in wheat cultivars with an increase of their phenolics contents by 34.3 and 10.2% in HD 2987 and Kharchiya 65, respectively at 60 days after germination. Non-significant changes were observed in soil o... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|