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Ecotoxicological information

Toxicity to terrestrial plants

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Administrative data

Endpoint:
toxicity to terrestrial plants: short-term
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study well documented, meets genereally accepted scientific principles

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
Chlorosis in healthy and viroid-infected plants exposed to the steam additive diethanolamine
Author:
Horst RK et al.
Year:
1983
Bibliographic source:
Scientia Horticulturae 19: 1-8
Reference Type:
secondary source
Title:
2-Diethylaminoethanol, CAS No.: 100-37-8. UNEP Publications, SIDS Initial Assessment Report for SIAM 15
Author:
OECD SIDS
Year:
2002
Bibliographic source:
SIDS Initial Assessment Report for SIAM 15
Report Date:
2002

Materials and methods

Principles of method if other than guideline:
Toxic effects of test substance on terrestrial plants cultivated in the greenhouse
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
TS-Freetext:
2-diethylaminoethanol, purity: > 99 %

Test organisms

Species:
other: other terrestrial plant: Chrysanthemum morifolium CV "Indianapolis white"

Results and discussion

Effect concentrations
Duration:
22 d
Dose descriptor:
EC50
Effect conc.:
0.12 other: mg/l
Basis for effect:
other: chlorosis

Any other information on results incl. tables

RS-Freetext:
- test substance caused chlorosis in young leaves of chrysanthemum, tomato, corn and bean
- Sensitivity of corn and chrysanthemum to DEAE was
cultivar-dependend: chrysanthemum cultivar "Indianapolis
White" was sensitive to low concentrations of DEAE, while
"Bonnie Jean", "Velvet Ridge" and "Mistletoe" were less so,
and corn "3XD50" was sensitive to DEAE while "Ohio 28" was
not.
- The presence of latent chrysanthemum chlorotic mottle viroid (ChCMV-L) increased the sensitivity of "Bonnie Jean" and "Velvet Ridge" to DEAE.
- Infection of tomatoes with mild or severe strains of potato spindle tuber viroid (PSTV) resulted in increased
sinsitivity to DEAE under conditions of environmental
stress.
- Leaves of chrysanthemum exhibition DEAE-induced chlorosis
contained higher, but non-toxic, levels of iron and other
minerals than those from non DEAE-treated plants.

- Chrysanthemum cultivars varied in their sensitivity to DEAE.
- Symptoms were generally restricted to leaves which developed after initiation of DEAE exposure, and included chlorosis, epinasty, stunting and necrosis.
- All "Indianapolis White" (4/4) exhibited chlorosis 7 days
after exposure to 1E-2 ml DEAE added to non-sterile soil
(725 ml pot).
- At 1E-4 ml/pot, only 50 % (2/4) of the plants were chlorotic after 22 days.

Applicant's summary and conclusion