Interactive impacts of boron and organic amendments in plant-soil microbial relationships

0542260 - MBÚ 2022 RIV NL eng J - Journal Article
Vera, A. - Moreno, J. L. - Siles, J. A. - López-Mondejár, Rubén - Zhou, Y. - Li, Y. - Garcia, C. - Nicolas, E. - Bastida, F.
Interactive impacts of boron and organic amendments in plant-soil microbial relationships.
Journal of Hazardous Materials. Roč. 408, APR 15 (2021), č. článku 124939. ISSN 0304-3894. E-ISSN 1873-3336
Institutional support: RVO:61388971
Keywords : Soil fertility * Microbial community * Plant physiology * Boron toxicity * Desalinated seawater
OECD category: Microbiology
Impact factor: 14.224, year: 2021
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0304389420329307

Water shortage and low organic carbon content in soil limit soil fertility and crop productivity. The use of desalinated seawater is increasing as an alternative source of irrigation water. However, it has a high boron (B) content that could cause toxicity in the plant-soil microbial system. Here, we evaluated the responses of the soil microbiota and lemon trees to 3 irrigation B doses (0.3, 1, and 15 mg L-1) under two types of soil management (conventional, CS, and organic, OS) in a 180-days pot experiment. High B doses promoted B accumulation in soil, reaching harmful concentrations that affected soil biodiversity. Our results suggest a close interaction between B and organic labile fractions that increased B availability in soil solution. Besides, B addition to soil impacted on microbial biomass. The bacterial community showed sensitivity to the B dose. Organic amendment did not increase B soil adsorption but it favored B plant uptake. The highest B dose had a detrimental impact on plant physiology, finally resulting lethal for the plants. Our study provides a comprehensive assessment of the microbes-plant interactions in soils irrigated with water with high B content. This will be fundamental in the design of future fertirrigation strategies.
Permanent Link: http://hdl.handle.net/11104/0319718