PMID- 33636267 OWN - NLM STAT- MEDLINE DCOM- 20210721 LR - 20210721 IS - 1879-0003 (Electronic) IS - 0141-8130 (Linking) VI - 178 DP - 2021 May 1 TI - Chitin nanofibers trigger membrane bound defense signaling and induce elicitor activity in plants. PG - 253-262 LID - S0141-8130(21)00460-8 [pii] LID - 10.1016/j.ijbiomac.2021.02.164 [doi] AB - The present study demonstrated that chitin-based nanofibers (CNFs) trigger the chitinase genes (PGIP1 and CaChi2), while elevating salicylic acid that can protect plants against pathogens. Cross-talk between this genetic induction and salicylic-acid-mediated immune response was also observed, which may arm a plant against multiple pathovars. Crab and mushroom based CNFs were synthesized by electrospinning and ball milling techniques. Plants (mung bean, Vigna radiata) (pepper, Capsicum annuum) were pre-inoculated with CNFs and treated with the pathogens Scrolotium rolfsii for pepper and Macrophomina phaseolina for mung bean and shrimp-based CNFs were used as a control. Treated plants had elevated levels of chitinase genes in response to CNFs at inoculation concentrations <10 mg/mL both in soil and media, to protect them against the pathogenic fungal disease. After 24 h of exposure to the pathogens, qRT-PCR showed genes class II chitinase gene (CaChi2) and polygalacturonase inhibitor protein 1 (PGIP1) to be up-regulated in both root and shoot at 0.1 and 1 mg/mL of inoculation, respectively. The ball milled mushroom CNFs were sufficient to trigger the membrane based enzymes with less diameter (>/=15 nm) to be most efficient versus others. In vitro analysis showed IC(50) of ball milled mushroom CNFs to be most efficient in limiting the growth of fungal biomass. Further trigger-like effects were prominent in reducing pathogenic fungal spread in both species. CI - Copyright (c) 2021. Published by Elsevier B.V. FAU - Um-E-Aiman AU - Um-E-Aiman AD - Department of Environmental Science, Lahore College for Women University, Lahore, Pakistan. FAU - Nisar, Numrah AU - Nisar N AD - Department of Environmental Science, Lahore College for Women University, Lahore, Pakistan. Electronic address: numrah.nisar@lcwu.edu.pk. FAU - Tsuzuki, Takuya AU - Tsuzuki T AD - Department of Engineering, Australian National University, Australia. FAU - Lowe, Adrian AU - Lowe A AD - Department of Engineering, Australian National University, Australia. FAU - Rossiter, John T AU - Rossiter JT AD - Imperial College London, UK. FAU - Javaid, Arshad AU - Javaid A AD - Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan. FAU - Powell, Glen AU - Powell G AD - NIAB EMR, UK. FAU - Waseem, Rashad AU - Waseem R AD - University of Agriculture Faisalabad, Pakistan. FAU - Al-Mijalli, Samiah H AU - Al-Mijalli SH AD - Biology Department, College of Sciences, Princess Nourah bint Abdulrahman University (PNU), Riyadh 11671, Saudi Arabia. FAU - Iqbal, Munawar AU - Iqbal M AD - Department of Chemistry, The university of Lahore, Lahore, Pakistan. Electronic address: bosalvee@yahoo.com. LA - eng PT - Journal Article DEP - 20210223 PL - Netherlands TA - Int J Biol Macromol JT - International journal of biological macromolecules JID - 7909578 RN - 1398-61-4 (Chitin) RN - Macrophomina phaseolina SB - IM MH - Ascomycota/*immunology MH - *Capsicum/immunology/microbiology MH - *Cell Membrane/immunology/microbiology MH - *Chitin/chemistry/pharmacology MH - Nanofibers/*chemistry MH - *Plant Diseases/immunology/microbiology MH - Plant Immunity/*drug effects MH - *Vigna/immunology/microbiology OTO - NOTNLM OT - Ball milling OT - Chitin based nanofibers OT - Crab and mushroom OT - Elicitor activity OT - Membrane triggering EDAT- 2021/02/27 06:00 MHDA- 2021/07/22 06:00 CRDT- 2021/02/26 20:11 PHST- 2020/10/18 00:00 [received] PHST- 2021/01/28 00:00 [revised] PHST- 2021/02/21 00:00 [accepted] PHST- 2021/02/27 06:00 [pubmed] PHST- 2021/07/22 06:00 [medline] PHST- 2021/02/26 20:11 [entrez] AID - S0141-8130(21)00460-8 [pii] AID - 10.1016/j.ijbiomac.2021.02.164 [doi] PST - ppublish SO - Int J Biol Macromol. 2021 May 1;178:253-262. doi: 10.1016/j.ijbiomac.2021.02.164. Epub 2021 Feb 23.