Journal
PLANTS-BASEL
Volume 11, Issue 15, Pages -Publisher
MDPI
DOI: 10.3390/plants11151898
Keywords
Aux; IAA; fruit maturity; hormones; Japanese apricot
Categories
Funding
- Jiangsu Seed Industry Key Research Program [JBGS [2021]019]
- Fundamental Research Funds for the Central Universities [KYZZ2022004]
- National Natural Science Foundation of China [31971703]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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This study investigated the role of Aux/IAA genes in Japanese apricot fruit development and maturity. The expression of PmIAA genes significantly increased during fruit growth and ripening, highlighting their importance in fruit development. Additionally, the study revealed an interaction between auxin and ethylene.
Auxin/indole-3-acetic acid (Aux/IAA) is a transcriptional repressor in the auxin signaling pathway that plays a role in several plant growth and development as well as fruit and embryo development. However, it is unclear what role they play in Japanese apricot (Prunus mume) fruit development and maturity. To investigate the role of Aux/IAA genes in fruit texture, development, and maturity, we comprehensively identified and expressed 19 PmIAA genes, and demonstrated their conserved domains and homology across species. The majority of PmIAA genes are highly responsive and expressed in different hormone treatments. PmIAA2, PmIAA5, PmIAA7, PmIAA10, PmIAA13, PmIAA18, and PmIAA19 showed a substantial increase in expression, suggesting that these genes are involved in fruit growth and maturity. During fruit maturation, alteration in the expression of PmIAA genes in response to 1-Methylcyclopropene (1-MCP) treatment revealed an interaction between auxin and ethylene. The current study investigated the response of Aux/IAA development regulators to auxin during fruit ripening, with the goal of better understanding their potential application in functional genomics.
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