ArticleThe plant pathology journal2024
Capsicum annuum NAC4 (CaNAC4) Is a Transcription Factor with Roles in Biotic and Abiotic Stresses.
Article in The plant pathology journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Molecular mechanisms and agronomic strategies for thermotolerance in chili pepper (Capsicum annuum L.).Plant cell reports · 2026Review
- CaNAC61, CaNAC79, and CaNAC92 Act as Negative Regulators in Pepper Defense Response AgainstBiology · 2026Article
- The Transcription Factor CaNAC81 Is Involved in the Carotenoid Accumulation in Chili Pepper Fruits.Plants (Basel, Switzerland) · 2025Article
- Strategies to develop climate-resilient chili peppers: transcription factor optimization through genome editing.Planta · 2025Review
- Identification and Expression Analysis of NAC Transcription Factors Related to Rust Resistance in Foxtail Millet.Plants (Basel, Switzerland) · 2025Article
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Authors and funding
5 authors.
Funding
Abstract
Transcription factors (TFs) regulate gene expression by binding to DNA. The NAC gene family in plants consists of crucial TFs that influence plant development and stress responses. The whole genome of Capsicum annuum shows over 100 NAC genes (CaNAC). Functional characteristics of the most CaNAC TFs are unknown. In this study, we identified CaNAC4, a novel NAC TF in C. annuum. CaNAC4 expression increased after inoculation with the pathogens, Xanthomonas axonopodis pv. vesicatoria race 3 and X. axonopodis pv. glycines 8ra, and following treatment with the plant hormones, salicylic acid and abscisic acid. We investigated the functional characteristics of the CaNAC4 gene and its roles in salt tolerance and anti-pathogen defense in transgenic Nicotiana benthamiana. For salt stress analysis, the leaf discs of wild-type and CaNAC4-transgenic N. benthamiana plants were exposed to different concentrations of sodium chloride. Chlorophyll loss was more severe in salt stress-treated wild-type plants than in CaNAC4-transgenic plants. To analyze the role of CaNAC4 in anti-pathogen defense, a spore suspension of Botrytis cinerea was used to infect the leaves. The disease caused by B. cinerea gradually increased in severity, and the symptoms were clearer in the CaNAC4-transgenic lines. We also investigated hypersensitive response (HR) in CaNAC4-transgenic plants. The results showed a stronger HR in wild-type plants after infiltration with the apoptosis regulator, BAX. In conclusion, our results suggest that CaNAC4 may enhance salt tolerance and act as a negative regulator of biotic stress in plants.
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