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Limited Diclosulam Herbicide Uptake and Translocation-Induced Tolerance in Crotalaria juncea
The study was to identify the potential tolerance of Crotalaria juncea to diclosulam uptake and translocation and its effects on the physiological metabolism of plants. Two experiments were carried out; I—Evaluation of uptake and translocation of 14 C-diclosulam (35 g a.i. ha −1 ) in C. juncea , at...
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Published in: | Bulletin of environmental contamination and toxicology 2020, Vol.104 (1), p.114-120 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The study was to identify the potential tolerance of
Crotalaria juncea
to diclosulam uptake and translocation and its effects on the physiological metabolism of plants. Two experiments were carried out; I—Evaluation of uptake and translocation of
14
C-diclosulam (35 g a.i. ha
−1
) in
C. juncea
, at seven and 14 days after emergence. II—Evaluation of chlorophyll
a
transient fluorescence of dark-adapted
C. juncea
leaves when applied diclosulam in pre-emergence. Plants of
C. juncea
presented an anatomical/metabolic barrier to diclosulam translocation in the stem, which may confer tolerance to this herbicidal, besides reduced translocation due to low accumulation in the cotyledons. In addition, plants can maintain photosynthetic metabolism active when growing in soil with diclosulam by not changing the dynamics of energy dissipation. Thus, when cultivated in soil with residual of diclosulam,
C. juncea
can tolerate the herbicide to maintain plant growth. |
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ISSN: | 0007-4861 1432-0800 |
DOI: | 10.1007/s00128-019-02742-7 |