ArticleJournal of experimental botany2019
The HD-Zip transcription factor LcHB2 regulates litchi fruit abscission through the activation of two cellulase genes.
Article in Journal of experimental botany, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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32 citing papers in PubMed, 76 citations in OpenAlex.
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- Identification of 1,3-1,4-β-D-glucanase (OsDLH) genes and analysis of haplotype diversity in rice.Frontiers in plant science · 2025Article
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- Genome-wide identification and characterization of Ethylene-Insensitive 3 (EIN3/EIL) gene family in Camellia oleifera.PloS one · 2025Article
- The MaNAP1-MaMADS1 transcription factor module mediates ethylene-regulated peel softening and ripening in banana.The Plant cell · 2024Article
- Exploring Genomic Regions Associated with Fruit Traits in Pepper: Insights from Multiple GWAS Models.International journal of molecular sciences · 2024Article
- Genome-wide analysis of HD-Zip genes in Sophora alopecuroides and their role in salt stress response.The plant genome · 2024Article
- Abscission in plants: from mechanism to applications.Advanced biotechnology · 2024Review
- LcMPK3 and LcMPK6 positively regulate fruitlet abscission in litchi.Molecular horticulture · 2024Article
- Transcriptomic and physiological analysis provide new insight into seed shattering mechanism in Pennisetum alopecuroides 'Liqiu'.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Identification ofPhysiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Transcriptome differential expression analysis of defoliation of two different lemon varieties.PeerJ · 2024Article
- Genome-wide analysis of the mulberry (Frontiers in plant science · 2024Article
- Transcriptome analysis unravels key pathways and hub genes related to immature fruit abscission inFrontiers in plant science · 2024Article
- Phytohormones and candidate genes synergistically regulate fruitlet abscission in Areca catechu L.BMC plant biology · 2023Article
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Authors and funding
10 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Cellulases play important roles in the shedding of plant organs; however, little is yet known about the functions of cellulase genes during the process of organ abscission. Abnormal fruitlet abscission is a serious problem in the production of litchi (Litchi chinensis), an economically important fruit widely grown in South Asia. In this study, two abscission-accelerating treatments (carbohydrate stress and application of ethephon) were evaluated in litchi fruitlets. Cell wall degradation and cell separation were clearly observed in the abscission zones of treated fruitlets, consistent with enhanced cellulase activities and reduced cellulose contents. The expression of two cellulase genes (LcCEL2 and LcCEL8) was strongly associated with abscission. Floral organs of transgenic Arabidopsis overexpressing LcCEL2 or LcCEL8 showed remarkably precocious abscission. Electrophoretic mobility shift assays and transient expression experiments demonstrated that a novel homeodomain-leucine zipper transcription factor, LcHB2, could directly bind to and activate HD-binding cis-elements in the LcCEL2 and LcCEL8 promoters. Our results provide new information regarding the transcriptional regulation of the cellulase genes responsible for cell wall degradation and cell separation during plant organ shedding, and raise the possibility of future manipulation of litchi fruitlet abscission by modulation of the activities of these two cellulases.
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