Delayed degradation of chlorophylls and photosynthetic proteins in Arabidopsis autophagy mutants during stress-induced leaf yellowing
DC Field | Value | Language |
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dc.contributor.author | Sakuraba, Yasuhito | - |
dc.contributor.author | Lee, Sang-Hwa | - |
dc.contributor.author | Kim, Ye-Sol | - |
dc.contributor.author | Park, Ohkmae K. | - |
dc.contributor.author | Hoertensteiner, Stefan | - |
dc.contributor.author | Paek, Nam-Chon | - |
dc.date.accessioned | 2021-09-05T07:22:07Z | - |
dc.date.available | 2021-09-05T07:22:07Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-07 | - |
dc.identifier.issn | 0022-0957 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/98088 | - |
dc.description.abstract | Plant autophagy, one of the essential proteolysis systems, balances proteome and nutrient levels in cells of the whole plant. Autophagy has been studied by analysing Arabidopsis thaliana autophagy-defective atg mutants, but the relationship between autophagy and chlorophyll (Chl) breakdown during stress-induced leaf yellowing remains unclear. During natural senescence or under abiotic-stress conditions, extensive cell death and early yellowing occurs in the leaves of atg mutants. A new finding is revealed that atg5 and atg7 mutants exhibit a functional stay-green phenotype under mild abiotic-stress conditions, but leaf yellowing proceeds normally in wild-type leaves under these conditions. Under mild salt stress, atg5 leaves retained high levels of Chls and all photosystem proteins and maintained a normal chloroplast structure. Furthermore, a double mutant of atg5 and non-functional stay-green nonyellowing1-1 (atg5 nye1-1) showed a much stronger stay-green phenotype than either single mutant. Taking these results together, it is proposed that autophagy functions in the non-selective catabolism of Chls and photosynthetic proteins during stress-induced leaf yellowing, in addition to the selective degradation of Chl-apoprotein complexes in the chloroplasts through the senescence-induced STAY-GREEN1/NYE1 and Chl catabolic enzymes. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | OXFORD UNIV PRESS | - |
dc.subject | HARVESTING-COMPLEX-II | - |
dc.subject | STAY-GREEN | - |
dc.subject | REGULATES CHLOROPHYLL | - |
dc.subject | SENESCENCE | - |
dc.subject | BREAKDOWN | - |
dc.subject | CHLOROPLASTS | - |
dc.subject | CELL | - |
dc.subject | IDENTIFICATION | - |
dc.subject | REDUCTASE | - |
dc.subject | THALIANA | - |
dc.title | Delayed degradation of chlorophylls and photosynthetic proteins in Arabidopsis autophagy mutants during stress-induced leaf yellowing | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Ohkmae K. | - |
dc.identifier.doi | 10.1093/jxb/eru008 | - |
dc.identifier.wosid | 000339954000012 | - |
dc.identifier.bibliographicCitation | JOURNAL OF EXPERIMENTAL BOTANY, v.65, no.14, pp.3915 - 3925 | - |
dc.relation.isPartOf | JOURNAL OF EXPERIMENTAL BOTANY | - |
dc.citation.title | JOURNAL OF EXPERIMENTAL BOTANY | - |
dc.citation.volume | 65 | - |
dc.citation.number | 14 | - |
dc.citation.startPage | 3915 | - |
dc.citation.endPage | 3925 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Plant Sciences | - |
dc.relation.journalWebOfScienceCategory | Plant Sciences | - |
dc.subject.keywordPlus | HARVESTING-COMPLEX-II | - |
dc.subject.keywordPlus | STAY-GREEN | - |
dc.subject.keywordPlus | REGULATES CHLOROPHYLL | - |
dc.subject.keywordPlus | SENESCENCE | - |
dc.subject.keywordPlus | BREAKDOWN | - |
dc.subject.keywordPlus | CHLOROPLASTS | - |
dc.subject.keywordPlus | CELL | - |
dc.subject.keywordPlus | IDENTIFICATION | - |
dc.subject.keywordPlus | REDUCTASE | - |
dc.subject.keywordPlus | THALIANA | - |
dc.subject.keywordAuthor | Abiotic stress | - |
dc.subject.keywordAuthor | Arabidopsis thaliana | - |
dc.subject.keywordAuthor | autophagy | - |
dc.subject.keywordAuthor | atg5 | - |
dc.subject.keywordAuthor | chlorophyll degradation | - |
dc.subject.keywordAuthor | leaf senescence | - |
dc.subject.keywordAuthor | stay-green | - |
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