EFFECTS OF CADMIUM AND KINETIN ON CHLOROPHYLL CONTENT, SACCHARIDES AND DRY-MATTER ACCUMULATION IN SUNFLOWER PLANTS

被引：44

作者：

GADALLAH, MAA

机构：

[1] Botany Department, Faculty of Science, Assiut University, Assiut

来源：

BIOLOGIA PLANTARUM | 1995年 / 37卷 / 02期

关键词：

CHLOROPHYLL STABILITY INDEX; HELIANTHUS ANNUUS; HYDROLYZABLE SACCHARIDES; SOLUBLE SACCHARIDES;

D O I：

10.1007/BF02913219

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Cadmium (Cd) and kinetin (Kin) significantly affected the growth and contents of chlorophyll (Chl) and of soluble and reserve (hydrolysable) saccharides in sunflower plants. Cd-treated plants had lower contents of Chl and soluble saccharides and produced less dry matter than control (Cd-untreated) plants. Chl a stability to heat (CSI) increased at all Cd concentrations. The same was true for Chl b stability (0 - 10 mu M Cd). Spraying sunflower shoots with Kin solutions counteracted the deleterious effects of Cd. Kin application enhanced the Chl a and b contents, Chl a/b ratio, content of soluble saccharides and dry matter, and to less extent Chi stability. The relative role of Kin in affecting the parameters tested (as indicated by eta(2) values) was predominant while that of Cd was subsidiary except for Chl a stability. The role of Cd x Kin interaction was dominant for hydrolysable saccharides. Hence spraying shoots of plants grown under increasing Cd concentration with Kin can partially alleviate inhibitory effects of cadmium.

引用

页码：233 / 240

页数：8

共 31 条

[1]

Banerji D., Laloraya M.M., Chlorophyll formation in isolated pumpkin cotyledons in the presence of kinetin and chloramphenicol, Plant Cell Physiol., 8, pp. 263-268, (1967)

[2]

Baszynski T., Wajda L., Krol M., Wolinska D., Krupa Z., Tukendorf A., Photosynthetic activities of cadmium-treated tomato plants, Physiologia Plantarum, 48, pp. 365-370, (1980)

[3]

Beevers L., Growth regulator control of senescence in leaf discs of nasturtium (Tropaeolum majus), Biochemistry and Physiology of Plant Growth Substances, pp. 1417-1435, (1968)

[4]

Bishnoi N.R., Sheoran I.S., Singh R., Influence of cadmium and nickel on photosynthesis and water relations in wheat leaves of different insertion level, Photosynthetica, 28, pp. 473-479, (1993)

[5]

Czuba M., Orod D., Effects of cadmium and zinc on ozone-induced phytotoxicity in cress and lettuce, Can. J. Bot., 52, pp. 645-649, (1973)

[6]

Dubois M., Gilles K.A., Hamilton J.K., Rabers R.A., Smith F., Colorimetric method for the determination of saccharides and related substances, Anal. Chem., 28, pp. 350-356, (1956)

[7]

Ernst W.H.O., Biochemical aspects of cadmium in plant, Cadmium and Environment. Part I: Ecological Cycling, pp. 639-653, (1980)

[8]

Ferretti M., Ghisi R., Merlo L., dalla Vecchia F., Fassera C., Effect of cadmium on photosynthesis and enzymes of photosynthetic sulphate and nitrate assimilation pathways in maize (Zea mays L.), Photosynthetica, 29, pp. 49-54, (1994)

[9]

Foy C.D., Chaney R.L., White M.C., The physiology of metal toxicity in plants, Annual Review of Plant Physiology, 29, pp. 511-566, (1978)

[10]

Gadallah M.A.A., The combined effects of acidification stress and kinetin on chlorophyll content, dry matter accumulation and transpiration coefficient in Sorghum bicolor plants, Biol. Plant., 36, pp. 149-153, (1994)

← 1 2 3 4 →