Effect of metribuzin on nitrogen metabolism and iron acquisition in Zea mays

被引：6
作者：
Bartucca, Maria Luce [1 ]
Mimmo, Tanja [2 ]
Cesco, Stefano [2 ]
Panfili, Ivan [1 ]
Del Buono, Daniele [1 ]
机构：
[1] Univ Perugia, Dipartimento Sci Agr Alimentari & Ambientali, Borgo XX Giugno 74, I-06121 Perugia, Italy
[2] Free Univ Bolzano, Fac Sci & Technol, Bolzano, Italy
来源：
CHEMISTRY AND ECOLOGY | 2019年 / 35卷 / 08期
关键词：
Zea mays L; herbicide; metribuzin; Fe mineral nutrition; ammonia organication; enzyme activities; PHYTOSIDEROPHORES RELEASE; HERBICIDE CHLORSULFURON; CHLORIMURON-ETHYL; PROTEIN-FORMATION; NUTRIENT-UPTAKE; WHEAT; GROWTH; PLANTS; NUTRITION; TOXICITY;
D O I：
10.1080/02757540.2019.1641493
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
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 () 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.
引用
收藏
页码：720 / 731
页数：12
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