IbMPK3/IbMPK6-mediated IbSPF1 phosphorylation promotes tolerance to bacterial pathogen in sweetpotato

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dc.contributor.authorHo Soo Kim-
dc.contributor.authorX Bian-
dc.contributor.authorChan-Ju Lee-
dc.contributor.authorSo-Eun Kim-
dc.contributor.authorSung Chul Park-
dc.contributor.authorY Xie-
dc.contributor.authorX Guo-
dc.contributor.authorSang Soo Kwak-
dc.date.accessioned2020-02-07T16:30:29Z-
dc.date.available2020-02-07T16:30:29Z-
dc.date.issued2019-
dc.identifier.issn0721-7714-
dc.identifier.uri10.1007/s00299-019-02451-9ko
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/19127-
dc.description.abstractIbSPF1, a novel target of IbMPK3/IbMPK6, regulates biotic stress response in sweetpotato. Environmental stresses due to biotic and abiotic factors negatively affect crop quality and productivity. To minimize the damage caused by these factors, numerous stress signaling pathways are activated in plants. Among these, the mitogen-activated protein kinase (MAPK) signaling cascade plays a pivotal role in diverse plant stress responses. MPK3 and MPK6 function in several cellular signaling pathways by phosphorylating downstream partner proteins in response to environmental stresses. However, little is known about the MPK3/MPK6 signaling pathway in sweetpotato [Ipomoea batatas (L.) Lam]. We recently confirmed that IbMPK3 and IbMPK6, two pathogen-responsive MAPKs, play essential roles in defense gene activation in sweetpotato. In this study, we show that sweetpotato SP8-binding factor (IbSPF1), a substrate of IbMPK3/IbMPK6, functions as a transcriptional regulator of biotic stress signaling in sweetpotato. IbSPF1 specifically interacts with IbMPK3 and IbMPK6, which phosphorylate Ser75 and Ser110 residues of IbSPF1. This increases the affinity of IbSPF1 for the W-box element in target gene promoters. Additionally, the expression of IbSPF1 was up-regulated under various stress conditions and different hormone treatments involved in plant defense responses. Interestingly, the phospho-mimicking mutant of IbSPF1 showed enhanced resistance to Pseudomonas syringae pv. tabaci, and transient expression of mutant IbSPF1 induced the expression of pathogenesis-related genes. These results indicate that the phosphorylation of IbSPF1 by IbMPK3/IbMPK6 plays a critical role in plant immunity by up-regulating the expression of downstream genes.-
dc.publisherSpringer-
dc.titleIbMPK3/IbMPK6-mediated IbSPF1 phosphorylation promotes tolerance to bacterial pathogen in sweetpotato-
dc.title.alternativeIbMPK3/IbMPK6-mediated IbSPF1 phosphorylation promotes tolerance to bacterial pathogen in sweetpotato-
dc.typeArticle-
dc.citation.titlePlant Cell Reports-
dc.citation.number11-
dc.citation.endPage1415-
dc.citation.startPage1403-
dc.citation.volume38-
dc.contributor.affiliatedAuthorHo Soo Kim-
dc.contributor.affiliatedAuthorChan-Ju Lee-
dc.contributor.affiliatedAuthorSo-Eun Kim-
dc.contributor.affiliatedAuthorSung Chul Park-
dc.contributor.affiliatedAuthorSang Soo Kwak-
dc.contributor.alternativeName김호수-
dc.contributor.alternativeNameBian-
dc.contributor.alternativeName이찬주-
dc.contributor.alternativeName김소은-
dc.contributor.alternativeName박성철-
dc.contributor.alternativeNameXie-
dc.contributor.alternativeNameGuo-
dc.contributor.alternativeName곽상수-
dc.identifier.bibliographicCitationPlant Cell Reports, vol. 38, no. 11, pp. 1403-1415-
dc.identifier.doi10.1007/s00299-019-02451-9-
dc.subject.keywordBiotic stress-
dc.subject.keywordIbMPK-
dc.subject.keywordIbSPF1-
dc.subject.keywordWRKY transcription factor-
dc.subject.keywordSweetpotato-
dc.subject.localbiotic stresses-
dc.subject.localbiotic stress-
dc.subject.localBiotic stress-
dc.subject.localIbMPK-
dc.subject.localIbSPF1-
dc.subject.localWRKY transcription factor-
dc.subject.localsweet potato-
dc.subject.localsweet potatoes-
dc.subject.localSweet potato (Ipomoea batatas L. Lam)-
dc.subject.localSweet potato (Ipomoea batatas)-
dc.subject.localSweet otato-
dc.subject.localsweet potato (Ipomoea batatas)-
dc.subject.localipomoea batatas-
dc.subject.localSweetpotato (Ipomoea batatas)-
dc.subject.localsweetpotato-
dc.subject.localSweetpotato Ipomoea batatas-
dc.subject.localSweetpotato (Ipomoea batatas L.)-
dc.subject.localSweetpotato-
dc.subject.localSweetpotato (Ipomoea batatas (L.) Lam)-
dc.subject.localSweet potato-
dc.subject.localIpomoea batatas-
dc.subject.localSweet potato (Ipomoea batatas (L.) Lam.)-
dc.description.journalClassY-
Appears in Collections:
Division of Research on National Challenges > Plant Systems Engineering Research > 1. Journal Articles
Jeonbuk Branch Institute > Biological Resource Center > 1. Journal Articles
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