Tuberous roots of transgenic sweetpotato overexpressing IbCAD1 have enhanced low-temperature storage phenotypes

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dc.contributor.authorChan-Ju Lee-
dc.contributor.authorSo-Eun Kim-
dc.contributor.authorS U Park-
dc.contributor.authorYe-Hoon Lim-
dc.contributor.authorHa-Young Choi-
dc.contributor.authorWon Gon Kim-
dc.contributor.authorC Y Ji-
dc.contributor.authorHo Soo Kim-
dc.contributor.authorSang Soo Kwak-
dc.date.accessioned2021-06-29T03:30:29Z-
dc.date.available2021-06-29T03:30:29Z-
dc.date.issued2021-
dc.identifier.issn0981-9428-
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/24423-
dc.description.abstractLignin is associated with cell wall rigidity, water and solute transport, and resistance to diverse stresses in plants. Lignin consists of polymerized monolignols (p-coumaryl, coniferyl, and sinapyl alcohols), which are synthesized by cinnamyl alcohol dehydrogenase (CAD) in the phenylpropanoid pathway. We previously investigated cold-induced IbCAD1 expression by transcriptome profiling of cold-stored tuberous roots of sweetpotato (Ipomoea batatas [L.] Lam). In this study, we confirmed that IbCAD1 expression levels depended on the sweetpotato root type and were strongly induced by several abiotic stresses. We generated transgenic sweetpotato plants overexpressing IbCAD1 (TC plants) to investigate CAD1 physiological functions in sweetpotato. TC plants displayed lower root weights and lower ratios of tuberous roots to pencil roots than non-transgenic (NT) plants. The lignin contents in tuberous roots of NT and TC plants differed slightly, but these differences were not significant. By contrast, monolignol levels and syringyl (S)/guaiacyl (G) ratios were higher in TC plants than NT plants, primarily owing to syringyl unit accumulation. Tuberous roots of TC plants displayed enhanced low-temperature (4 °C) storage with lower malondialdehyde and H2O2 contents than NT plants. We propose that high monolignol levels in TC tuberous roots served as substrates for increased peroxidase activity, thereby enhancing antioxidation capacity against cold stress-induced reactive oxygen species. Increased monolignol contents and/or increased S/G ratios might contribute to pathogen-induced stress tolerance as a secondary chilling-damage response in sweetpotato. These results provide novel information about CAD1 function in cold stress tolerance and root formation mechanisms in sweetpotato.-
dc.publisherElsevier-
dc.titleTuberous roots of transgenic sweetpotato overexpressing IbCAD1 have enhanced low-temperature storage phenotypes-
dc.title.alternativeTuberous roots of transgenic sweetpotato overexpressing IbCAD1 have enhanced low-temperature storage phenotypes-
dc.typeArticle-
dc.citation.titlePlant Physiology and Biochemistry-
dc.citation.number0-
dc.citation.endPage557-
dc.citation.startPage549-
dc.citation.volume166-
dc.contributor.affiliatedAuthorChan-Ju Lee-
dc.contributor.affiliatedAuthorSo-Eun Kim-
dc.contributor.affiliatedAuthorYe-Hoon Lim-
dc.contributor.affiliatedAuthorHa-Young Choi-
dc.contributor.affiliatedAuthorWon Gon Kim-
dc.contributor.affiliatedAuthorHo Soo Kim-
dc.contributor.affiliatedAuthorSang Soo Kwak-
dc.contributor.alternativeName이찬주-
dc.contributor.alternativeName김소은-
dc.contributor.alternativeName박설우-
dc.contributor.alternativeName임예훈-
dc.contributor.alternativeName최하영-
dc.contributor.alternativeName김원곤-
dc.contributor.alternativeName지창윤-
dc.contributor.alternativeName김호수-
dc.contributor.alternativeName곽상수-
dc.identifier.bibliographicCitationPlant Physiology and Biochemistry, vol. 166, pp. 549-557-
dc.identifier.doi10.1016/j.plaphy.2021.06.024-
dc.subject.keywordSweetpotato-
dc.subject.keywordCAD1-
dc.subject.keywordLow-temperature storage-
dc.subject.keywordTuberous roots-
dc.subject.keywordLignin-
dc.subject.keywordMonolignol-
dc.subject.keywordPeroxidase-
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.subject.localCAD1-
dc.subject.localLow-temperature storage-
dc.subject.localTuberous roots-
dc.subject.localtuberous root-
dc.subject.localTuberous root-
dc.subject.localLignin-
dc.subject.locallignin-
dc.subject.localMonolignol-
dc.subject.localperoxidase-
dc.subject.localPeroxidase-
dc.description.journalClassY-
Appears in Collections:
Division of Research on National Challenges > Infectious Disease Research Center > 1. Journal Articles
Division of Research on National Challenges > Plant Systems Engineering Research > 1. Journal Articles
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