ArticleBMC plant biology2026
Genome-wide analysis of AP2/ERF gene family in Camellia oleifera and its potential roles in ethylene-induced fruit abscission.
Article in BMC plant biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
Abstract
backgroundCamellia oleifera is a commercially important woody edible oil tree species in China. Yet, heavy premature fruit drop causes substantial yield losses and significantly limits the economic potential of the oil tea industry. Ethylene is well recognized as a promoter of organ abscission in plant, and the APETALA2/Ethylene Responsive Factor (AP2/ERF) family plays critical roles in response to ethylene. However, the AP2/ERF gene family in Camellia oleifera remains largely unexplored.
resultEnhanced fruit abscission in Camellia oleifera was associated with increased accumulation of 1-aminocyclopropane-1-carboxylic acid (ACC), the immediate precursor of ethylene, in fruit pedicels. Compared with the high-yield Camellia oleifera cultivar ‘1712’, the low-yield cultivar ‘143’ exhibited significantly higher fruit abscission rates (e.g., 9.4% vs. 17.2% in August) and was more sensitive to ethylene. Ethephon treatment increased the cumulative fruit drop rates of cultivar ‘143’ to 14.1% at 3 days, while that of cultivar ‘1712’ was only 3.4%. Microscopic observations of the pedicel abscission zone revealed a reduction in lignified cells following abscission-promoting treatments in Camellia oleifera. Genome-wide analysis identified 143 CoAP2/ERF genes distributed across 15 chromosomes, which were classified into 16 subfamilies with 57 duplicated gene pairs. Transcriptomic data revealed tissue-specific expression patterns of CoAP2/ERF family. Among these genes, 79 CoAP2/ERFs were significantly differentially expressed in responses to ethephon. Notably, nine CoAP2/ERFs were highly expressed in pedicel, among which five down-regulated in response to abscission signal. Collectively, these five CoAP2/ERFs serve as the candidate regulators of ethylene-induced fruit abscission in Camellia oleifera, and they likely govern this process by modulating the development of abscission zone tissues.
conclusionsCamellia oleifera shows high sensitivity to ethylene signaling, which is closely correlated with the premature abscission of young fruits. Our study systematically characterized the AP2/ERF gene family and identified five CoAP2/ERF genes as potential key regulators of fruit abscission. These findings deepen the understanding of abscission mechanisms in Camellia oleifera and lay a solid scientific foundation for further functional characterization of CoAP2/ERF gene family.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.