Effect of metribuzin on nitrogen metabolism and iron acquisition in Zea mays. Issue 8 (14th September 2019)

• Record Type: Journal Article
• Authors: Bartucca, Maria Luce; Mimmo, Tanja; Cesco, Stefano; Panfili, Ivan; Del Buono, Daniele
• Is Part Of: Chemistry and ecology. Volume 35:Issue 8(2019)
• Page Start: 720
• Page End: 731
• Publication Date: 2019-09-14
• Subjects: Zea mays L -- herbicide -- metribuzin -- Fe mineral nutrition -- ammonia organication -- enzyme activities; Pollution -- Environmental aspects -- Periodicals; Ecology -- Periodicals; 577.2
• DOI: 10.1080/02757540.2019.1641493
• Languages: English
• ISSNs: 0275-7540

Abstract

ABSTRACT: Weed control based on herbicides is essential to guarantee high levels of crop productivity. However, these compounds can affect ecosystems and non-target crops. Therefore, a research was carried out in order to investigate the effect of metribuzin (ME) on the capacity of Zea mays L. (maize) to acquire iron (Fe). ME reduced the chlorophyll content, the concentration of phytosiderophores (PSs) released by roots and their Fe content. Both the shoots and roots of ME-treated plants showed increases in ammonia ( NH 4 + ) concentrations. This effect was ascribed to the decreases in the activity of glutamine synthetase (GS; EC 6.3.1.2) and glutamine amide-2-oxoglutarate aminotransferase (GOGAT; EC 1.4.1.14). The results indicate that the interference exerted by ME on nitrogen organication was the cause of the drop in the PSs release and of the reduction in the Fe content.