We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effects of EDTA and Zn Stress on Physiological Characteristics of Medicago sativa L.
- Authors
Nan HOU; Hui JING; Shuhe WEI; Huiping DAI; Xiaona HOU
- Abstract
[Objectives] The paper was better understand the mechanisms of Zn plant uptake in the presence of EDTA and to evaluate the contributions of Zn-EDTA complexes to Zn uptake. [Methods] Three alfalfa cultivars were cultivated for 60 d before exposure to 0, 250 p.g Zn and 250 μg Zn + 10 μg EDTA per kg soil for 50 d. Zn concentrations in tissues were analyzed by flame atomic absorbance spectrometry. Subsequently, Zn amount per plant, translocation factor (TF) and bio-concentration factor (BCE) were calculated. Nonenzymatic compounds in tissues were analyzed spectrophotometrically. [Results] Application of Zn + EDTA expressively increased biomass of different tissues of three alfalfa cultivars. Among the three alfalfa cultivars, Medicago saliva ssp. displayed the highest Zn concentration in tissues, the largest Zn amount in aerial parts, and the highest BCE in aerial parts under Zn + EDTA exposure. Under Zn + EDTA stress, increases in free proline in roots, stem, and leaves of M. sativa ssp. were found. Inhibited O2' production in stem and leaves, increases in soluble sugar, but decreases in soluble protein were observed in M. sativa ssp. [ Conclusions] M. saliva ssp. is superior to other two cultivars for Zn phyto -remed iati on, and its well-coordinated physiological changes under Zn + EDTA exposure confer the great Zn tolerance of this cultivar.
- Subjects
PHYSIOLOGICAL stress; ALFALFA; MEDICAGO; BIOMASS; CULTIVARS
- Publication
Plant Diseases & Pests, 2022, Vol 13, Issue 3, p25
- ISSN
2152-3932
- Publication type
Article
- DOI
10.19579/j.cnki.plant-d.p.2022.03.007