DOI: 10.1094/phyto.2004.94.2.177. Silicon Enhances the Accumulation of Diterpenoid Phytoalexins in Rice: A Potential Mechanism for Blast Resistance

Silicon Enhances the Accumulation of Diterpenoid Phytoalexins in Rice: A Potential Mechanism for Blast Resistance

10.1094/phyto.2004.94.2.177

Crossref journal-article

Scientific Societies

Phytopathology® (1665)

Abstract

Although several reports underscore the importance of silicon (Si) in controlling Magnaporthe grisea on rice, no study has associated this beneficial effect with specific mechanisms of host defense responses against this fungal attack. In this study, however, we provide evidence that higher levels of momilactone phytoalexins were found in leaf extracts from plants inoculated with M. grisea and amended with silicon (Si+) than in leaf extracts from inoculated plants not amended with silicon (Si- ) or noninoculated Si+ and Si- plants. On this basis, the more efficient stimulation of the terpenoid pathway in Si+ plants and, consequently, the increase in the levels of momilactones appears to be a factor contributing to enhanced rice resistance to blast. This may explain the lower level of blast severity observed on leaves of Si+ plants at 96 h after inoculation with M. grisea. The results of this study strongly suggest that Si plays an active role in the resistance of rice to blast rather than the formation of a physical barrier to penetration by M. grisea.

Bibliography

Rodrigues, F. Ã., McNally, D. J., Datnoff, L. E., Jones, J. B., LabbÃ©, C., Benhamou, N., Menzies, J. G., & BÃ©langer, R. R. (2004). Silicon Enhances the Accumulation of Diterpenoid Phytoalexins in Rice: A Potential Mechanism for Blast Resistance. PhytopathologyÂ®, 94(2), 177â183.

Authors 8

Fabrício Á. Rodrigues (first)
David J. McNally (additional)
Lawrence E. Datnoff (additional)
Jeffrey B. Jones (additional)
Caroline Labbé (additional)
Nicole Benhamou (additional)
James G. Menzies (additional)
Richard R. Bélanger (additional)

References 35 Referenced 249

{'key': 'p_1', 'first-page': '1689', 'volume': '49', 'author': 'Akatsuka T.', 'year': '1985', 'journal-title': 'Agric. Biol. Chem.'} / Agric. Biol. Chem. by Akatsuka T. (1985)
10.1016/0048-4059(73)90079-9
Bonman, J. M. 1992. Blast. Pages 14-16 in: Compendium of Rice Diseases. R. K. Webster and P. S. Gunnel, eds. The American Phytopathological Society, St. Paul, MN.
Cannell, R. J. P. 1998. Natural Products Isolation. Humana Press Inc., Totowa, NJ. (10.1007/978-1-59259-256-2)
10.1016/S0048-4059(80)80019-1
10.1038/267511a0
10.1016/S0031-9422(00)84189-8
10.1104/pp.113.3.719
10.1016/S0261-2194(97)00033-1
10.1111/j.1439-0434.1986.tb00859.x
10.1016/S0031-9422(96)00619-X
10.1094/PHYTO.1998.88.5.396
Fawe, A., Menzies, J. G., Chérif, M., and Bélanger, R. R. 2001. Silicon and disease resistance in dicotyledons. Pages 159-169 in: Silicon in Agriculture. L. E. Datnoff, G. H. Snyder, and G. H. Korndörfer, eds. Elsevier Science, The Netherlands. (10.1016/S0928-3420(01)80013-6)
10.1146/annurev.phyto.37.1.285
{'key': 'p_15', 'first-page': '1', 'volume': '157', 'author': 'Hemmi T.', 'year': '1941', 'journal-title': 'Noji Kairyo Shiryo'} / Noji Kairyo Shiryo by Hemmi T. (1941)
{'key': 'p_16', 'first-page': '460', 'volume': '103', 'author': 'Ito S.', 'year': '1931', 'journal-title': 'J. Sapporo Soc. Agric. Sci.'} / J. Sapporo Soc. Agric. Sci. by Ito S. (1931)
10.1016/0031-9422(93)85399-C
10.1094/PHYTO.2002.92.10.1095
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10.1016/S0031-9422(00)97532-0
10.1016/0040-4020(95)00423-6
10.1146/annurev.py.33.090195.001423
Marchetti, M. A., and Bonman, J. M. 1989. Rice blast disease management. Pages 175-183 in: Rice Farming Systems-New Directions. Proc. Int. Symp. IRRI, Los Banos, Philippines.
Matsuo, T., and Hoshikama, K. 1993. Science of the rice plant morphology. Food and Agriculture Policy Research Center, Tokyo.
Ou, S. H. 1985. Rice Diseases. 2nd ed. Commonw. Agric. Bur., Kew, England.
10.1094/PHYTO.2003.93.5.535
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10.1111/j.1365-3040.1991.tb01518.x
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{'key': 'p_33', 'first-page': '1999', 'volume': '10', 'author': 'Suzuki H.', 'year': '1940', 'journal-title': 'Ngyo Oyobi Engei'} / Ngyo Oyobi Engei by Suzuki H. (1940)
10.1271/bbb.57.405
{'key': 'p_35', 'first-page': '107', 'volume': '8', 'author': 'Yoshida S. S.', 'year': '1962', 'journal-title': 'Jpn. J. Soil Sci. Plant Nutr.'} / Jpn. J. Soil Sci. Plant Nutr. by Yoshida S. S. (1962)

Dates

Type	When
Created	18 years, 3 months ago (May 11, 2007, 7:24 a.m.)
Deposited	3 years, 8 months ago (Dec. 29, 2021, 1:54 p.m.)
Indexed	3 weeks, 5 days ago (Aug. 7, 2025, 4:56 a.m.)
Issued	21 years, 7 months ago (Feb. 1, 2004)
Published	21 years, 7 months ago (Feb. 1, 2004)
Published Print	21 years, 7 months ago (Feb. 1, 2004)

Funders 0

None

BibTeX

@article{Rodrigues_2004, title={Silicon Enhances the Accumulation of Diterpenoid Phytoalexins in Rice: A Potential Mechanism for Blast Resistance}, volume={94}, ISSN={1943-7684}, url={http://dx.doi.org/10.1094/phyto.2004.94.2.177}, DOI={10.1094/phyto.2004.94.2.177}, number={2}, journal={Phytopathology®}, publisher={Scientific Societies}, author={Rodrigues, Fabrício Á. and McNally, David J. and Datnoff, Lawrence E. and Jones, Jeffrey B. and Labbé, Caroline and Benhamou, Nicole and Menzies, James G. and Bélanger, Richard R.}, year={2004}, month=feb, pages={177–183} }

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