Photosynthetica 2000, 38(3):473-476 | DOI: 10.1023/A:1010906528140

Translocation of 14C-(Labelled) Photosynthates in Groundnut (Arachis Hypogaea L.) Infected with Macrophomina Phaseoli (Maub) Ashby

I.C. Okwulehie1
1 Department of Biological Sciences, Federal University of Agriculture, Umudike, Umuahia, Abia State, Nigeria

At various intervals after inoculation of the roots of groundnut plants with the fungus Macrophomina phaseoli, 14CO2 was administered to branch 2 (from the base) of the plants in the light. The effects of the disease on the translocation of 14C-photosynthates out of the source branch to the rest of the plant were studied 24 h after labelling. As the plant aged and the disease symptom development became more evident, an increasing percentage of the fixed 14C-photosynthates was exported from branch 2 of the inoculated plants (IP) compared to the non-inoculated plants (NIP). The apex, main stem, and branch 1 of NIP imported more of the total fixed 14C throughout the developmental stages of the plant except for day 10 after inoculation when branch 1 of IP imported almost 76 % of the total fixed 14C. The roots of IP were the major sink and imported higher percent of the total fixed 14C than the roots of NIP.

Additional key words: branches; root

Prepublished online: April 1, 2000; Published: October 1, 2000  Show citation

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Okwulehie, I.C. (2000). Translocation of 14C-(Labelled) Photosynthates in Groundnut (Arachis Hypogaea L.) Infected with Macrophomina Phaseoli (Maub) Ashby. Photosynthetica, 38(3), 473-476. doi: 10.1023/A:1010906528140
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    References

    1. Coffey, M.D., Marshall, C., Whitbread, W.: Translocation of 14C-photosynthates in tomato plants infected with Alternaria solani Ell. and Mart Jones and Grout.-Phytopathology 60: 605-615, 1970. Go to original source...
    2. Doodson, J.K., Manners, J.G., Myers, A.: Some effects of yellow rust (Puccinia striiformis) on carbon assimilation and translocation in wheat.-J. exp. Bot. 16: 304-317, 1964. Go to original source...
    3. Feakin, S.D. (ed.): Pest Control in Groundnut.-Pans Manuals 2: 47-48, 1967.
    4. Garraway, M.O., Pellelier, R.L.: Distribution of 14C in potato plant in relation to leaf infection by Phytophthora infestans.-Phytopathology 56: 1184-1189, 1966.
    5. Gerwitz, D.L., Durbin, R.D.: The influence of rust on the distribution of 32P in bean plant.-Phytopathology 55: 57-60, 1965.
    6. Khan, A.A.: Effect of leaf position and plant age on the translocation of 14C-assimilates in onion.-J. agr. Sci. (Cambridge) 96: 451-455, 1981. Go to original source...
    7. Livne, A., Daly, J.M.: Translocation in healthy and rust-affected beans.-Phytopathology 56: 170-175, 1966.
    8. Moniz, L., Thurumalachar, M.J., Patel, M.K.: Technique for artificial inoculation of cotton plants with Macrophomina phaseolina.-Curr. Sci. 25: 64, 1956.
    9. Narayanan, G.V., Seshadri, C.R.: Groundnut Cultivation in India.-Indian Council Agr. Res., New Delhi 1954.
    10. Pozsar, B.I,, Kiraly, Z.: Phloem-transport in rust infected plants and cytokinin-directed long-distance movement of nutrients.-Phytopathol. Z. 56: 297-309, 1966. Go to original source...
    11. Shaw, M., Samborski, D.J.: The physiology of host-parasite relationship. The accumulation of radioactive substances at infection of facultative and obligate parasites, including tomato mosaic virus.-Can. J. Bot. 34: 389-405, 1956. Go to original source...
    12. Stoy, V.: The translocation of 14C-labelled, photosynthetic product from the leaf to the ear of wheat.-Physiol. Plant. 16: 851-866, 1963. Go to original source...
    13. Thrower, L.B.: On the host-parasite relationship of Trifolium subterraneaneum and Uromyces trifolii.-Phytopathol. Z. 52: 269-294, 1965. Go to original source...
    14. Thrower, L.B., Thrower, S.L.: The effect of infection with Uromyces fabae on translocation in broad bean.-Phytopathol. Z. 93: 267-276, 1966. Go to original source...
    15. Yarwood, C.E., Jacobson, L.: Accumulation of chemicals in diseased areas of leaves.-Phytopathology 45: 43-48, 1955.
    16. Zaki, A.I., Durbin, R.D.: The effect of translocation of photosynthetic products from diseased leaves.-Phytopathology 55: 528-529, 1965.

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