Copper Ions are Required for Cochliobolus heterostrophus in Appressorium Formation and Virulence on Maize
is the causal agent of southern corn leaf blight, a destructive disease on maize worldwide. However, how it regulates virulence on maize is still largely unknown. Here, we report that two copper transporter genes, and , are required for its virulence. and mutants showed attenuated virulence on maize...
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Published in | Phytopathology Vol. 110; no. 2; pp. 494 - 504 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
01.02.2020
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Subjects | |
Online Access | Get full text |
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Summary: | is the causal agent of southern corn leaf blight, a destructive disease on maize worldwide. However, how it regulates virulence on maize is still largely unknown. Here, we report that two copper transporter genes,
and
, are required for its virulence.
and
mutants showed attenuated virulence on maize compared with the wild-type strain TM17 but development phenotypes of those mutants on media with or without infection-related stress agents were the same as the wild-type strain. Moreover,
and
play critical roles in appressorium formation and mutation of
or
suppresses the appressorium formation. Furthermore, copper-chelating agent ammonium tetrathiomolybdate suppressed the appressorium formation and virulence of
on maize, whereas copper ions enhanced the appressorium formation and virulence on maize. The results indicate that copper ions are required for appressorium formation and virulence of
on maize and are acquired from the environment by two copper transporters: ChCTR1 and ChCTR4. |
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ISSN: | 0031-949X 1943-7684 |
DOI: | 10.1094/PHYTO-07-19-0254-R |