Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: UMLS:C0008272 (
chlorosis
)
2,195
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Plant weight and contents of chlorophyll, ionic thiocyanate (
SCN
(-)), and hydrogen cyanide (HCN) were determined in cabbage (Brassica oleracea var.capitula L. cv. Early Greenball), bean (Phaseolus vulgaris L. cv. Contender), and tobacco (Nicotiana tabacum L. cv. Delhi 76) grown hydroponically in modified Hoagland's nutrient solution with six concentrations of
SCN
(-) (supplied as KSCN) (0, 5, 25, 50, 100, and 200 mg/liter). Whereas tobacco plants did not grow with any level of
SCN
(-) in the culture solution, beans grew with 5 mg/liter and cabbages grew with between 5 and 50 mg/ liter. Increasing levels of
SCN
(-) in the culture solution resulted in decreased growth and chlorophyll content, accompanied by consistently increasing amounts of
SCN
(-) in cabbage. Small amounts of HCN found only in tissues of cabbage were not influenced by levels of
SCN
(-). The greater insensitivity of cabbages to the presence of
SCN
(-) compared with beans is apparently related to the presence of endogenous glucosinolates which are capable of being degraded into
SCN
(-). Accumulation of
SCN
(-) and occurrence of leaf
chlorosis
in cabbage and beans and death of tobacco plants supplied with
SCN
(-) in hydroponic culture confirm the capacity of
SCN
(-) as an allelopathic agent, but its effect mechanism in ecology needs to be demonstrated.
...
PMID:Influence of ionic thiocyanate on growth of cabbage, bean, and tobacco. 2440 16
