期刊
PLANTS-BASEL
卷 10, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/plants10061039
关键词
aquaporin; water transport; re-annotation; pepper; abiotic stress
资金
- National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2017R1A6A3A04004014]
- Korea Forest Service of Korean government through the R&D Program for Forestry Technology [2014071H10-2022-AA04]
- Graduate school of Post Plastic specialization of Korea Environmental Industry & Technology Institute - Ministry of Environment, Republic of Korea
- Korea Forestry Promotion Institute (KOFPI) [2014071H10-2022-AA04] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study conducted a comprehensive genomic study of AQPs in pepper, identifying a large proportion of AQP genes belonging to the TIP4 subfamily and analyzing their chromosomal localization and duplication times. Transcriptome analysis revealed that transport-, photosystem-, and thylakoid-related genes were generally enriched in expression clusters containing AQP genes in pepper.
Aquaporins (AQPs) are known to have a vital role in water transport in all living organisms including agriculturally important crops, but a comprehensive genomic study of AQPs in pepper has not been implemented. Here, we updated previous gene annotations and generated a total of 259 AQP genes from five plants, including pepper. Phylogenetic and motif analyses revealed that a large proportion of pepper AQP genes belong to the specific subgroup of tonoplast intrinsic protein (TIP) subfamily, TIP4. Chromosomal localization and estimated duplication times illustrated that genes in TIP4 formed a tandem array on the short arm of chromosome 1, resulting from pepper-specific expansion after its divergence with Solanaceae species. Transcriptome analyses under various abiotic stress conditions revealed that transport-, photosystem-, and thylakoid-related genes were generally enriched in expression clusters containing AQP genes in pepper. These results provide valuable genomic resources and insight into the evolutionary mechanism that generate genomic diversity of the AQP gene family in pepper.
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