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单词 chlorosis
释义

chlorosis


chlo·ro·sis

C0315700 (klə-rō′sĭs)n.1. The yellowing or whitening of normally green plant tissue because of a decreased amount of chlorophyll, often as a result of disease or nutrient deficiency.2. An iron-deficiency anemia, primarily of young women, characterized by a greenish-yellow discoloration of the skin. Also called greensickness.
chlo·rot′ic (-rŏt′ĭk) adj.chlo·rot′i·cal·ly adv.

chlorosis

(klɔːˈrəʊsɪs) n1. (Pathology) pathol Also called: greensickness a disorder, formerly common in adolescent girls, characterized by pale greenish-yellow skin, weakness, and palpitation and caused by insufficient iron in the body2. (Plant Pathology) botany a deficiency of chlorophyll in green plants caused by mineral deficiency, lack of light, disease, etc, the leaves appearing uncharacteristically pale[C17: from chloro- + -osis] chlorotic adj

chlo•ro•sis

(klɔˈroʊ sɪs, kloʊ-)

n. 1. an abnormally yellow color of plant tissues, resulting from partial failure to develop chlorophyll. 2. Also called greensickness. a benign iron-deficiency anemia in adolescent girls, marked by a pale yellow-green complexion. [1675–85; < Greek chlōr(ós) yellowish green + -osis] chlo•rot′ic (-ˈrɒt ɪk) adj.

chlorosis

1. a diseased condition of plants in which green parts lose their color or turn yellowish.
2. the process by which floral parts of a plant turn into leaves. Also chloranthy. See also disease and illness.See also: Plants
green sickness; a disease of girls in puberty, characterized by, among other symptoms, greenishness of the skin.See also: Disease and Illness
greensickness; a disease of girls in puberty, characterized by, among other symptoms, greenishness of the complexion.See also: Complexion

chlorosis

The yellowing of leaves usually caused by a deficiency of iron.
Thesaurus
Noun1.chlorosis - iron deficiency anemia in young womenchlorosis - iron deficiency anemia in young women; characterized by weakness and menstrual disturbances and a green color to the skingreensicknessiron deficiency anaemia, iron deficiency anemia - a form of anemia due to lack of iron in the diet or to iron loss as a result of chronic bleeding
Translations

Chlorosis


chlorosis

[klə′rō·səs] (medicine) A form of macrocytic anemia in young females characterized by marked reduction in hemoglobin and a greenish skin color. (plant pathology) A disease condition of green plants seen as yellowing of green parts of the plant.

Chlorosis

 

a plant disease in which the formation of chlorophyll in the leaves is disrupted and photosynthetic activity is decreased. Characteristic symptoms are premature yellowing and falling of leaves, formation of dwarf leaves, desiccation of shoot apices, and dying off of active roots. Among cultivated plants, fruit and berry crops and ornamentals are most often affected.

The causes of chlorosis are varied. Infectious chlorosis is caused by viruses (for example, raspberry chlorosis and apical chlorosis of tobacco and makhorka), fungi, and other microorganisms. Pests, such as thrips and aphids, are often the carriers of the causative agents of chlorosis. Noninfectious, or functional, chlorosis develops because of unfavorable soil or climatic conditions or because of inadequacy of cultivation practices. In most cases, fruit and berry crops (especially grapes) on carbonate soils suffer from ferrous or calcareous chlorosis. Zinc and magnesium chloroses also occur. A distinctive kind of yellowing occurs on diseased plants: spots appear, and at first yellowing appears only on the lower or upper leaves or only in the intervenous areas. Hereditary chlorosis of plants (variegation, gold-leafedness) is mutagenic and inherited; it is used in the selection of ornamental plants to develop variegated forms.

The prevention of chlorosis entails the application of mineral and mineral fertilizers. Carbonate soils are acidified, interrows of orchards are mulched and planted with ground cover, and pests that are carriers of infection are destroyed. Treatment of noninfectious chlorosis involves applying deficient nutrient elements close to the active zone of the root system and administering nonradical dressings and injections of solutions containing trace elements into the trunks, branches, and roots of fruit trees. Plants suffering from infectious chlorosis are removed.

REFERENCES

Dement’eva, M. I. Bolezni plodovykh kul’tur. Moscow, 1962.
Shpota, L. A. Khloroz rastenii v Chuiskoi doline i bor’ba s nim. Frunze, 1968.
Nakaidze, I. A. Pochvennye usloviia i khloroz vinogradnoi lozy v Gruzii. Tbilisi, 1969.

L. A. SHPOTA

chlorosis


chlor·o·sis

(klōr-ō'sis), Rarely used term for a form of chronic hypochromic microcytic (iron deficiency) anemia, characterized by a great reduction in hemoglobin out of proportion to the decreased number of red blood cells; observed chiefly in females from puberty to the third decade and usually associated with diets deficient in iron and protein. Synonym(s): asiderotic anemia, chloremia (1) , chloroanemia, chlorotic anemia, green sickness [chloro- + G. -osis, condition]

chlorosis

(klə-rō′sĭs)n.1. The yellowing or whitening of normally green plant tissue because of a decreased amount of chlorophyll, often as a result of disease or nutrient deficiency.2. An iron-deficiency anemia, primarily of young women, characterized by a greenish-yellow discoloration of the skin. Also called greensickness.
chlo·rot′ic (-rŏt′ĭk) adj.chlo·rot′i·cal·ly adv.
A term first used in 1615 by J. Varandal for iron-deficiency anemia with yellow-green skin pallor of young women

chlorosis

A greenish tinge to the skin formerly associated with severe iron deficiency anaemia in malnourished young women. It is now almost unknown in developed countries.

chlorosis

a yellowing of plant leaves caused by lack of CHLOROPHYLL pigment due to mineral deficiency (e.g. that of magnesium, iron) or disease (e.g. virus yellows) which results in a decrease in photosynthetic rate.

chlorosis


  • noun

Synonyms for chlorosis

noun iron deficiency anemia in young women

Synonyms

  • greensickness

Related Words

  • iron deficiency anaemia
  • iron deficiency anemia
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