PMID- 34961172 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240404 IS - 2223-7747 (Print) IS - 2223-7747 (Electronic) IS - 2223-7747 (Linking) VI - 10 IP - 12 DP - 2021 Dec 8 TI - Chitosan Nanoparticles Inactivate Alfalfa Mosaic Virus Replication and Boost Innate Immunity in Nicotiana glutinosa Plants. LID - 10.3390/plants10122701 [doi] LID - 2701 AB - Plant viral infection is one of the most severe issues in food security globally, resulting in considerable crop production losses. Chitosan is a well-known biocontrol agent against a variety of plant infections. However, research on combatting viral infections is still in its early stages. The current study investigated the antiviral activities (protective, curative, and inactivation) of the prepared chitosan/dextran nanoparticles (CDNPs, 100 microg mL(-1)) on Nicotiana glutinosa plants. Scanning electron microscope (SEM) and dynamic light scattering analysis revealed that the synthesized CDNPs had a uniform, regular sphere shapes ranging from 20 to 160 nm in diameter, with an average diameter of 91.68 nm. The inactivation treatment was the most effective treatment, which resulted in a 100% reduction in the alfalfa mosaic virus (AMV, Acc# OK413670) accumulation level. On the other hand, the foliar application of CDNPs decreased disease severity and significantly reduced viral accumulation levels by 70.43% and 61.65% in protective and curative treatments, respectively, under greenhouse conditions. Additionally, the induction of systemic acquired resistance, increasing total carbohydrates and total phenolic contents, as well as triggering the transcriptional levels of peroxidase, pathogen-related protein-1, and phenylalanine ammonia-lyase were observed. In light of the results, we propose that the potential application of CDNPs could be an eco-friendly approach to enhance yield and a more effective therapeutic elicitor for disease management in plants upon induction of defense systems. FAU - Abdelkhalek, Ahmed AU - Abdelkhalek A AUID- ORCID: 0000-0002-8078-3265 AD - Plant Protection and Biomolecular Diagnosis Department, ALCRI, City of Scientific Research and Technological Applications, New Borg El-Arab City 21934, Alexandria, Egypt. FAU - Qari, Sameer H AU - Qari SH AUID- ORCID: 0000-0001-9424-5217 AD - Biology Department, Al-Jumum University College, Umm Al-Qura University, Mecca 25376, Saudi Arabia. FAU - Abu-Saied, Mohamed Abd Al-Raheem AU - Abu-Saied MAA AD - Polymeric Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City 21934, Alexandria, Egypt. FAU - Khalil, Abdallah Mohamed AU - Khalil AM AD - Plant Botany Department, Faculty of Science, Omar Al-Mukhtar University, Al Bayda 00218-84, Libya. FAU - Younes, Hosny A AU - Younes HA AD - Agricultural Botany Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt. FAU - Nehela, Yasser AU - Nehela Y AUID- ORCID: 0000-0003-1177-8099 AD - Department of Agricultural Botany, Faculty of Agriculture, Tanta University, Tanta 31511, Egypt. AD - Citrus Research and Education Center, Department of Plant Pathology, University of Florida, 700 Experiment Station Rd., Lake Alfred, FL 33850, USA. FAU - Behiry, Said I AU - Behiry SI AUID- ORCID: 0000-0001-5701-2254 AD - Agricultural Botany Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt. LA - eng PT - Journal Article DEP - 20211208 PL - Switzerland TA - Plants (Basel) JT - Plants (Basel, Switzerland) JID - 101596181 PMC - PMC8703458 OTO - NOTNLM OT - alfalfa mosaic virus OT - antiviral activity OT - chitosan nanoparticles OT - gene expression COIS- The authors declare no conflict of interest. EDAT- 2021/12/29 06:00 MHDA- 2021/12/29 06:01 PMCR- 2021/12/08 CRDT- 2021/12/28 01:09 PHST- 2021/11/05 00:00 [received] PHST- 2021/11/26 00:00 [revised] PHST- 2021/12/03 00:00 [accepted] PHST- 2021/12/28 01:09 [entrez] PHST- 2021/12/29 06:00 [pubmed] PHST- 2021/12/29 06:01 [medline] PHST- 2021/12/08 00:00 [pmc-release] AID - plants10122701 [pii] AID - plants-10-02701 [pii] AID - 10.3390/plants10122701 [doi] PST - epublish SO - Plants (Basel). 2021 Dec 8;10(12):2701. doi: 10.3390/plants10122701.