Interactions of Herbicides with Photosynthetic Electron Transport

Weed Science - Tập 39 Số 3 - Trang 458-464 - 1991
E. Patrick Fuerst1, Michael Norman1
1Dep. Agron. & Soils, Washington State Univ., Pullman, WA 99164-6420

Tóm tắt

The two primary sites of herbicide action in photosynthetic electron transport are the inhibition of photosystem II (PS II) electron transport and diversion of electron flow through photosystem I (PS I). PS II electron transport inhibitors bind to the D1 protein of the PS II reaction center, thus blocking electron transfer to plastoquinone. Inhibition of PS II electron transport prevents the conversion of absorbed light energy into electrochemical energy and results in the production of triplet chlorophyll and singlet oxygen which induce the peroxidation of membrane lipids. PS I electron acceptors probably accept electrons from the iron-sulfur protein, Fa/Fb. The free radical form of the herbicide leads to the production of hydroxyl radicals which cause the peroxidation of lipids. Herbicide-induced lipid peroxidation destroys membrane integrity, leading to cellular disorganization and phototoxicity.

Từ khóa


Tài liệu tham khảo

Smeda, 1990, The physiological and molecular characterization of atrazine resistance in photoautotrophic potato cells, 131

LeBaron H. M. and McFarland J. 1990. Herbicide resistance in weeds and crops: an overview and prognosis. Pages 336–352 in: Green M. B. , LeBaron H. M. , and Moberg W. K. , eds. Managing Resistance to Agrochemicals: From Fundamental Research to Practical Strategies. ACS Symp. Ser. 4221, Washington, DC.

Duke, 1985, Weed Physiology, II, 91

Mets, 1989, Target Sites of Herbicide Action, 1

10.1126/science.245.4925.1463

10.1016/0968-0004(88)90106-5

Trebst, 1987, The three-dimensional structure of the herbicide binding niche on the reaction center polypeptides of photosystem II, Z. Naturforsch., 42c, 742, 10.1515/znc-1987-0616

Hirschberg, 1987, Plant Molecular Biology. NATA ASI Ser. A: Life Sci, 140, 336

Babbs C. F. , Pham J. A. , and Coolbaugh R. C. 1989. Lethal hydroxyl radical production in paraquat-treated plants. Plant Physiol. 1267–1270.

Polos, 1987, Photosynthetic properties and cross-resistance to some urea herbicides of triazine-resistant Conyza canadensis Cronq. (L.), Z. Naturforsch., 42c, 783, 10.1515/znc-1987-7-807

10.1104/pp.83.2.329

Kunert, 1989, Target Sites of Herbicide Action, 45

10.1126/science.242.4879.672

10.1104/pp.84.4.1442

10.1016/0048-3575(89)90100-4

10.1021/bi00401a001

Halliwell, 1981, Chloroplast Metabolism, 179

Abbreviations: PS II, photosystem II; PS I, photosystem I; 3chl, triplet chlorophyll; 1O2, singlet oxygen; FNR, ferredoxin: NADP+ oxidoreductase; PQT++, paraquat divalent cation; PQT+., paraquat monovalent cation radical (reduced paraquat); O2 −., superoxide; SOD, superoxide dismutase; OH·, hydroxyl radical.

Akhavein, 1968, The dipyridylium herbicides, paraquat and diquat, Residue Rev., 23, 97

10.1146/annurev.pp.39.060188.002115

Dodge, 1983, Pesticide Chemistry: Human Welfare and the Environment, 59

Fuerst, 1986, Herbicide cross-resistance in triazine-resistant biotypes of four species, Weed Sci., 34, 344, 10.1017/S0043174500066960

10.1111/j.1751-1097.1989.tb04115.x

10.1016/S0304-4173(87)80002-2

Goodwin, 1983, Introduction to Plant Biochemistry, 677

10.1146/annurev.pp.35.060184.003303

Hirschberg, 1983, The molecular basis of triazine-herbicide resistance in higher-plant chloroplasts, Z. Naturforsch., 39c, 412

10.1104/pp.88.4.1195

10.1126/science.222.4630.1346

10.1111/j.1751-1097.1989.tb05580.x

Michel, 1986, Pigment-protein interactions in the photosynthetic reaction center from Rhodopseudomonas viridis, EMBO J., 5, 2445, 10.1002/j.1460-2075.1986.tb04520.x

10.1146/annurev.pp.31.060180.003121

10.1016/S0005-2728(89)80439-6

Pfister, 1979, The mode of action of photosystem II-specific inhibitors in herbicide-resistant weed biotypes, Z. Naturforsch., 34c, 996, 10.1515/znc-1979-1123

10.1007/BF00114570

10.1007/BF00262501

Schonfeld, 1986, Triazine resistance in Phalaris paradoxa: physiological and molecular analyses, Z. Naturforsch., 42c, 779

Sinning, 1989, First glance on the three-dimensional structure of the photosynthetic reaction center from a herbicide-resistant Rhodopseudomonas viridis mutant, Z. Naturforsch., 45c, 455

10.1021/bi00439a031

10.1104/pp.87.1.183

Vermaas, 1988, Light-Energy Transduction in Photosynthesis: Higher Plant and Bacterial Models, 197

Thông tin
Thông tin xuất bản

Weed Science

Tập 39 Số 3

458-464

Thông tin tác giả