Zuluaga A. P., Bidzinski P., Chanclud E., Ducasse A., Cayrol B., Selvaraj M. G., Ishitani M., Jauneau A., Deslandes L., Kroj T., Michel C., Szurek Boris, Koebnik Ralf, Morel J. B. (2020). The rice DNA-binding protein ZBED controls stress regulators and maintains disease resistance after a mild drought. Frontiers in Plant Science, 11, p. 1265 [15p.]. ISSN 1664-462X.
Titre du document
The rice DNA-binding protein ZBED controls stress regulators and maintains disease resistance after a mild drought
Année de publication
2020
Auteurs
Zuluaga A. P., Bidzinski P., Chanclud E., Ducasse A., Cayrol B., Selvaraj M. G., Ishitani M., Jauneau A., Deslandes L., Kroj T., Michel C., Szurek Boris, Koebnik Ralf, Morel J. B.
Source
Frontiers in Plant Science, 2020,
11, p. 1265 [15p.] ISSN 1664-462X
Background Identifying new sources of disease resistance and the corresponding underlying resistance mechanisms remains very challenging, particularly in Monocots. Moreover, the modification of most disease resistance pathways made so far is detrimental to tolerance to abiotic stresses such as drought. This is largely due to negative cross-talks between disease resistance and abiotic stress tolerance signaling pathways. We have previously described the role of the rice ZBED protein containing three Zn-finger BED domains in disease resistance against the fungal pathogenMagnaporthe oryzae. The molecular and biological functions of such BED domains in plant proteins remain elusive. Results UsingNicotiana benthamianaas a heterologous system, we show that ZBED localizes in the nucleus, binds DNA, and triggers basal immunity. These activities require conserved cysteine residues of the Zn-finger BED domains that are involved in DNA binding. Interestingly, ZBED overexpressor rice lines show increased drought tolerance. More importantly, the disease resistance response conferred by ZBED is not compromised by drought-induced stress. Conclusions Together our data indicate that ZBED might represent a new type of transcriptional regulator playing simultaneously a positive role in both disease resistance and drought tolerance. We demonstrate that it is possible to provide disease resistance and drought resistance simultaneously.
Plan de classement
Sciences du monde végétal [076]
Localisation
Fonds IRD [F B010079565]
Identifiant IRD
fdi:010079565
