FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3128698840> ?p ?o ?g. }

• W3128698840 abstract "Fresh flowers of cut lily plants often have a long postharvest life, but this changes after cold storage, which is often an essential process in the horticultural industry. In many cut lilies, a relatively short period of cold storage of 1 week often leads to early leaf and flower senescence. Early leaf and flower senescence are likely ethylene-dependent, either due to a higher level of ethylene production or a change in ethylene sensitivity. Such changes could be due to alteration in the expression of ethylene biosynthesis, perception, and signalling genes. Brassinosteroids (BRs) can delay the onset of senescence and chilling injury in crops but their effects on chilling tolerance in cut flowers have not been investigated. In this thesis, I investigated the role of BR and cold storage on cut lilies (Lilium orientalis) and the role of ethylene in cold-related injuries. More specifically, I investigated: i) the effects of cold storage and BR on postharvest function and ethylene production in a range of cut lily cultivars (Chapter II); ii) the effects of cold storage and BRs + cold storage on the expression pattern of ethylene related genes and a BRs-related transcription factor gene in cut lilies ‘Premium Blonde’ and ‘Marlon’ (Chapter III); and iii) the effects of ethylene on senescence processes and the expression pattern of its biosynthesis, receptor, and signal transduction pathway genes during senescence with and without cold storage in cut lily ‘Marlon’ (Chapter IV). The results of chapters 2 and 3 indicated that: 1) the cut lily cultivars had different levels of sensitivity to cold storage; 2) BR decreased ethylene production and the detrimental effects of cold storage; 3) BR treatment resulted in a greater expression LoBZR1 and a lower expression of most ethylene-related genes compared to cold storage treatment in ‘Premium Blonde’ and ‘Marlon’ lilies. Together, these findings suggest that the chilling injuries in cut lilies are ethylene mediated which could be due to either higher ethylene biosynthesis or higher ethylene sensitivity or a combination of both as a result of alteration in the expression of the related genes. Thus, delayed chilling injuries by application of BR is likely caused by the suppression of the over-expression of ethylene-related genes which results in less ethylene biosynthesis and possibly sensitivity. To understand whether chilling injuries are ethylene-dependent cut lily ‘Marlon’ plants in chapter IV were subjected to ethylene and 1-Methylcyclopropene (1-MCP; an ethylene action inhibitor) before and after cold storage. In non-cold-stored plants, ethylene and 1-MCP treatments did not affect postharvest quality, ethylene production, and the expression pattern of the investigated genes. Cold storage led to much earlier leaf yellowing and while bud opening was not affected, flowers senesced and abscised three days earlier. In cold-stored plants, ethylene and 1-MCP had no effects on bud opening and leaf yellowing but flower senescence and abscission were hastened by ethylene and delayed by 1-MCP. Similarly, the expression of all the genes examined and ethylene production were significantly increased by ethylene but significantly decreased by 1-MCP in cold-stored plants, although not at all time points. These results indicate that there is no sensitivity to ethylene in fresh-cut lily ‘Marlon’. But the response significantly differs following cold storage, in a tissue-dependant manner as flower senescence and abscission were delayed by 1-MCP but leaf senescence was not. Hence, ethylene does influence flower senescence following cold storage but leaf senescence is under the control of other currently unknown factors. Together this research indicates that focus on ethylene blockers to prolong postharvest life in lilies will be effective for flowers but not leaves. However, BR application was not seen to be beneficial at a practical level in all cultivars particularly in cultivars with a low level of sensitivity as the delays of senescence were very short." @default.
• W3128698840 created "2021-02-15" @default.
• W3128698840 creator A5004062229 @default.
• W3128698840 creator A5061620665 @default.
• W3128698840 date "2020-01-01" @default.
• W3128698840 modified "2023-09-23" @default.
• W3128698840 title "The Role of Brassinosteroids in the Regulation of Senescence in Lilium Orientalis" @default.
• W3128698840 hasPublicationYear "2020" @default.
• W3128698840 type Work @default.
• W3128698840 sameAs 3128698840 @default.
• W3128698840 citedByCount "0" @default.
• W3128698840 crossrefType "dissertation" @default.
• W3128698840 hasAuthorship W3128698840A5004062229 @default.
• W3128698840 hasAuthorship W3128698840A5061620665 @default.
• W3128698840 hasConcept C144027150 @default.
• W3128698840 hasConcept C157670687 @default.
• W3128698840 hasConcept C161221295 @default.
• W3128698840 hasConcept C161790260 @default.
• W3128698840 hasConcept C197321923 @default.
• W3128698840 hasConcept C2775935930 @default.
• W3128698840 hasConcept C2777534754 @default.
• W3128698840 hasConcept C2778597550 @default.
• W3128698840 hasConcept C2988529969 @default.
• W3128698840 hasConcept C522857546 @default.
• W3128698840 hasConcept C55493867 @default.
• W3128698840 hasConcept C59822182 @default.
• W3128698840 hasConcept C86803240 @default.
• W3128698840 hasConcept C95444343 @default.
• W3128698840 hasConceptScore W3128698840C144027150 @default.
• W3128698840 hasConceptScore W3128698840C157670687 @default.
• W3128698840 hasConceptScore W3128698840C161221295 @default.
• W3128698840 hasConceptScore W3128698840C161790260 @default.
• W3128698840 hasConceptScore W3128698840C197321923 @default.
• W3128698840 hasConceptScore W3128698840C2775935930 @default.
• W3128698840 hasConceptScore W3128698840C2777534754 @default.
• W3128698840 hasConceptScore W3128698840C2778597550 @default.
• W3128698840 hasConceptScore W3128698840C2988529969 @default.
• W3128698840 hasConceptScore W3128698840C522857546 @default.
• W3128698840 hasConceptScore W3128698840C55493867 @default.
• W3128698840 hasConceptScore W3128698840C59822182 @default.
• W3128698840 hasConceptScore W3128698840C86803240 @default.
• W3128698840 hasConceptScore W3128698840C95444343 @default.
• W3128698840 hasLocation W31286988401 @default.
• W3128698840 hasOpenAccess W3128698840 @default.
• W3128698840 hasPrimaryLocation W31286988401 @default.
• W3128698840 hasRelatedWork W144315528 @default.
• W3128698840 hasRelatedWork W1964421906 @default.
• W3128698840 hasRelatedWork W1975994761 @default.
• W3128698840 hasRelatedWork W2018854108 @default.
• W3128698840 hasRelatedWork W202372441 @default.
• W3128698840 hasRelatedWork W2091805516 @default.
• W3128698840 hasRelatedWork W2092958719 @default.
• W3128698840 hasRelatedWork W2093658714 @default.
• W3128698840 hasRelatedWork W2199125018 @default.
• W3128698840 hasRelatedWork W2351784493 @default.
• W3128698840 hasRelatedWork W255390086 @default.
• W3128698840 hasRelatedWork W2564352894 @default.
• W3128698840 hasRelatedWork W2755175168 @default.
• W3128698840 hasRelatedWork W2790407658 @default.
• W3128698840 hasRelatedWork W2810391030 @default.
• W3128698840 hasRelatedWork W2955262332 @default.
• W3128698840 hasRelatedWork W2964896649 @default.
• W3128698840 hasRelatedWork W2994886291 @default.
• W3128698840 hasRelatedWork W3011536359 @default.
• W3128698840 hasRelatedWork W3119398235 @default.
• W3128698840 isParatext "false" @default.
• W3128698840 isRetracted "false" @default.
• W3128698840 magId "3128698840" @default.
• W3128698840 workType "dissertation" @default.