Silicon modulates multi-layered defense against powdery mildew in Arabidopsis

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dc.contributor.authorWang, Lili
dc.contributor.authorDong, Min
dc.contributor.authorZhang, Qiong
dc.contributor.authorWu, Ying
dc.contributor.authorHu, Liang
dc.contributor.authorParson, James F.
dc.contributor.authorEisenstein, Edward
dc.contributor.authorDu, Xiangge
dc.contributor.authorXiao, Shunyuan
dc.date.accessioned2021-05-13T17:43:36Z
dc.date.available2021-05-13T17:43:36Z
dc.date.issued2020-03-27
dc.description.abstractSilicon (Si) has been widely employed in agriculture to enhance resistance against pathogens in many crop plants. However, the underlying molecular mechanisms of Si-mediated resistance remain elusive. In this study, the Arabidopsis-powdery mildew pathosystem was employed to investigate possible defense mechanisms of Si-mediated resistance. Because Arabidopsis lacks efficient Si transporters and thus is a low Si-accumulator, two heterologous Si influx transporters (from barley and muskmelon) were individually expressed in wild-type Arabidopsis Col-0 and a panel of mutants defective in different immune signaling pathways. Results from infection tests showed that while very low leaf Si content slightly induced salicylic acid (SA)-dependent resistance, high Si promoted PAD4-dependent but largely EDS1- and SA-independent resistance against the adapted powdery mildew isolate Golovinomyces cichoracearum UCSC1. Intriguingly, our results also showed that high Si could largely reboot non-host resistance in an immune-compromised eds1/pad4/sid2 triple mutant background against a non-adapted powdery mildew isolate G. cichoracearum UMSG1. Taken together, our results suggest that assimilated Si modulates distinct, multi-layered defense mechanisms to enhance plant resistance against adapted and no-adapted powdery mildew pathogens, possibly via synergistic interaction with defense-induced callose.en_US
dc.description.urihttps://doi.org/10.1186/s42483-020-00048-9
dc.identifierhttps://doi.org/10.13016/d0ma-yqtz
dc.identifier.citationWang, L., Dong, M., Zhang, Q. et al. Silicon modulates multi-layered defense against powdery mildew in Arabidopsis. Phytopathol Res 2, 7 (2020).en_US
dc.identifier.urihttp://hdl.handle.net/1903/27048
dc.language.isoen_USen_US
dc.publisherSpringer Natureen_US
dc.relation.isAvailableAtA. James Clark School of Engineeringen_us
dc.relation.isAvailableAtFischell Department of Bioengineeringen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.subjectSiliconen_US
dc.subjectArabidopsisen_US
dc.subjectPowdery mildewen_US
dc.subjectPAD4en_US
dc.subjectSalicylic aciden_US
dc.subjectDisease resistanceen_US
dc.subjectCalloseen_US
dc.titleSilicon modulates multi-layered defense against powdery mildew in Arabidopsisen_US
dc.typeArticleen_US

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