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논문 기본 정보

자료유형
학술저널
저자정보
김현지 (경상국립대학교 응용생명과학부(BK21)) 김윤희 (경상국립대학교)
저널정보
경상대학교 농업생명과학연구원(구 경상대학교 시설원예연구소) 농업생명과학연구 농업생명과학연구 제58권 제4호
발행연도
2024.8
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1 - 6 (6page)

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Sweetpotato (Ipomoea batatas L.) is a globally important food crop that is susceptible to infestation with the root-knot nematode,Meloidogyne incognita, which causes substantial crop losses. Previous transcriptomic and proteomic analyses identified several genesthat displayed differential expression patterns in susceptible and resistant cultivars in response to root-knot nematode (RKN) infection. As a result of previous study, RKN infection was confirmed in the RKN-susceptible sweetpotato cultivar Yulmi. Transcriptome analysisconfirmed that among the genes that respond in this process, there are many genes related to ethylene biosynthesis. Therefore, in thisstudy, we focused on the ACC oxidase (ACO) gene, the final enzyme of ethylene biosynthesis, and analyzed the expression patternsunder various abiotic stress conditions. Using transcriptome data from our previous study, various expression changes in the four ACOgenes used in this study were confirmed during RKN infection. The expression of G25011|TU41034 decreased during RKN infectioncompared to the untreated control, while the expression of G31097|TU51009, G28360|TU46486, and G15447|TU25395 genes increasedin the early stages of RKN infection. Expressions of four ACO genes in leaves of sweetpoato were investigated under abiotic stressconditions such as wounding, high salinity, dehydration, and low temperature stress treatment. Expression of the G25011|TU41034 wassignificantly increased under abiotic stress conditions except low temperature. G31097|TU51009 was hardly expressed under abiotic stressconditions. Although the expression pattern of G28360|TU46486 and G15447|TU25395 was slightly different depending on the type ofabiotic stress, an overall increase in expression was observed. It is expected that this study will be used as basic data on how ethylenebiosynthesis responds not only to nematode infection but also to various abiotic stress conditions and will be helpful in functional studiesof various crops.

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