Journal
JOURNAL OF PLANT PHYSIOLOGY
Volume 290, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.jplph.2023.154101
Keywords
Pear; Aroma; PusALDH1; Tomato
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In this study, a gene, PusALDH1, related to aroma biosynthesis was identified and its function in aroma accumulation was confirmed through fruit transformation. The study suggests that PusALDH1 could be a strong candidate gene in aroma synthesis.
Aroma is an important commercial trait that determines fruit quality and has an important influence on the overall flavor of fruits. Plant ALDH genes have been implicated in diverse pathways and play crucial roles in physiological activities. In this study, via genome resequencing we identified one gene PusALDH1 (Pbr034873.1) related to aroma biosynthesis that can respond to the induction of methyl jasmonate. Transient transformation of pear fruits and heterologous stable transformation of tomato further confirmed the function of PusALDH1 in aroma accumulation. The content of ALDH precursor substance, benzaldehyde, was reduced in the overexpressing pear and tomato fruits, and the content of ALDH product, benzoic acid and benzoic acid derivatives, was increased in the pear fruits. Meanwhile, transgenic tomato fruits with PusALDH1 overexpression exhibited a greater area of yellow placenta, indicating that the gene may be related to the growth and development of the fruit. Taken together, PusALDH1 could act as a strong candidate gene in aroma synthesis.
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