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Jiménez-Arias D, Bonardd S, Morales-Sierra S, Almeida
Pinheiro de Carvalho MÂ, Díaz Díaz D. Chitosan-Enclosed Menadione Sodium Bisulfite as an Environmentally Friendly Alternative to Enhance Biostimulant Properties against Drought. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3192-3200. [PMID: 36758115 PMCID: PMC9951248 DOI: 10.1021/acs.jafc.2c07927] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Biostimulants are an interesting strategy to increase crop tolerance to water deficits, and there is an extensive bibliography on them. However, most of them need to be treated continuously to increase protection throughout the growth cycle. In this context, we chose menadione sodium bisulfite, whose protective effect against water deficit has been previously demonstrated but only for a short period of time. Nanoencapsulation seems to be an interesting way to improve the properties of biostimulants. Our results show that menadione sodium bisulfite (MSB) encapsulated in chitosan/tripolyphosphate nanoparticles can increase the system's tolerance against an imposed water deficit and delay the need for retreatment by at least 1 week, accelerating plant recovery after rehydration. This highlights the positive properties of nanoencapsulation and shows how a simple encapsulation process can significantly improve the biostimulant protective properties, opening up new possibilities to be explored under field conditions to cope with water-deficit stress.
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Affiliation(s)
- David Jiménez-Arias
- ISOPlexis,
Center for Sustainable Agriculture and Food Technology, Madeira University, Campus Universitário da Penteada, 9020-105 Funchal, Madeira, Portugal
| | - Sebastian Bonardd
- Departamento
de Química Orgánica, Universidad
de la Laguna, Avda. Astrofísico Francisco Sánchez 3, La Laguna 38206, Tenerife, Spain
- Instituto
Universitario de Bio-Orgánica Antonio González, Universidad de la Laguna, Avda. Astrofísico Francisco Sánchez
2, La Laguna 38206, Tenerife, Spain
| | - Sarai Morales-Sierra
- Grupo
de Biología Vegetal Aplicada, Departamento de Botánica,
Ecología y Fisiología Vegetal-Facultad de Farmacia, Universidad de la Laguna, Avenida. Astrofísico Francisco Sánchez
s/n, La Laguna 38071, Tenerife, Canary Islands, Spain
| | - Miguel Â. Almeida
Pinheiro de Carvalho
- ISOPlexis,
Center for Sustainable Agriculture and Food Technology, Madeira University, Campus Universitário da Penteada, 9020-105 Funchal, Madeira, Portugal
- CiTAB,
Centre for the Research and Technology of Agroenvironmental and Biological
Sciences, University of Trás-os-Montes
and Alto Douro, Quinta dos Prados, 5000-801 Vila Real, Portugal
| | - David Díaz Díaz
- Departamento
de Química Orgánica, Universidad
de la Laguna, Avda. Astrofísico Francisco Sánchez 3, La Laguna 38206, Tenerife, Spain
- Instituto
Universitario de Bio-Orgánica Antonio González, Universidad de la Laguna, Avda. Astrofísico Francisco Sánchez
2, La Laguna 38206, Tenerife, Spain
- Institute
of Organic Chemistry, Faculty of Chemistry and Pharmacy, Regensburg University, Regensburg 93053, Germany
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Chen Y, Yan D, Xu J, Xiong H, Luan S, Xiao C, Huang Q. The importance of selecting crystal form for triazole fungicide tebuconazole to enhance its botryticidal activity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 854:158778. [PMID: 36122714 DOI: 10.1016/j.scitotenv.2022.158778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 09/09/2022] [Accepted: 09/11/2022] [Indexed: 06/15/2023]
Abstract
The growing evidences of resistant fungi stimulate fully understanding tebuconazole regarding its crystal structure on fungicidal activity. In this study, the crystal structures of six technical tebuconazoles (BX, HH, JP, QZ, SJ, and YT) were characterized by using high-resolution X-ray powder diffraction and three-dimensional crystal structure modeling. A structure-activity relationship of the tebuconazoles on the susceptible (HLS and YJS) or resistant (XHR) Botrytis cinerea isolates was analyzed, the differential tricarboxylic acid (TCA) cycle metabolism was determined, and molecular docking with sterol 14α-demethylase (CYP51) was performed. The results showed that tebuconazole existed in three types of crystal forms: an overlapping-pair conformation, a side-by-side-pair conformation, and a parallel-pair conformation. QZ with the parallel-pair conformation and the minimum crystal cell volume exhibited a higher activity and a lower resistant level. XHR possessed a higher content of TCA cycle metabolites and phosphate than YJS, but the exposure to QZ significantly reduced the contents of citrate, isocitrate, α-ketoglutarate and oxaloacetate in XHR, as did the exposure to other technical tebuconazoles. Moreover, the point mutations F487L, G464S, and G443S altered the binding properties of chiral stereoscopic R-QZ with CYP51 protein. Especially the G443S mutation promoted a weak linking of R-QZ with LEU380 and TYR126, and greatly slashed the binding action at lower docking score. In conclusion, our results evidenced an efficient crystal conformation of tebuconazole to improve botryticidal activity and a potential adaptability of B. cinerea to tebuconazole inhibition in TCA cycle metabolism and CYP51 protein mutation.
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Affiliation(s)
- Yongjun Chen
- Shanghai Key Lab of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, PR China
| | - Dongmei Yan
- Shanghai Key Lab of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jialin Xu
- Shanghai Key Lab of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, PR China
| | - Hui Xiong
- Shanghai Key Lab of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, PR China
| | - Shaorong Luan
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Ciying Xiao
- School of Biological Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Qingchun Huang
- Shanghai Key Lab of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, PR China.
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González-Acosta S, Baca-González V, Asensio-Calavia P, Otazo-Pérez A, López MR, Morales-delaNuez A, Pérez de la Lastra JM. Efficient Oral Priming of Tenebrio molitor Larvae Using Heat-Inactivated Microorganisms. Vaccines (Basel) 2022; 10:vaccines10081296. [PMID: 36016184 PMCID: PMC9415734 DOI: 10.3390/vaccines10081296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/04/2022] [Accepted: 08/06/2022] [Indexed: 11/16/2022] Open
Abstract
Microbial resistance is a global health problem that will increase over time. Advances in insect antimicrobial peptides (AMPs) offer a powerful new approach to combat antimicrobial resistance. Invertebrates represent a rich group of animals for the discovery of new antimicrobial agents due to their high diversity and the presence of adaptive immunity or “immune priming”. Here, we report a priming approach for Tenebrio molitor that simulates natural infection via the oral route. This oral administration has the advantage of minimizing the stress caused by conventional priming techniques and could be a viable method for mealworm immunity studies. When using inactivated microorganisms for oral priming, our results showed an increased survival of T. molitor larvae after exposure to various pathogens. This finding was consistent with the induction of antimicrobial activity in the hemolymph of primed larvae. Interestingly, the hemolymph of larvae orally primed with Escherichia coli showed constitutive activity against Staphylococcus aureus and heterologous activity for other Gram-negative bacteria, such as Salmonella enterica. The priming of T. molitor is generally performed via injection of the microorganism. To our knowledge, this is the first report describing the oral administration of heat-inactivated microorganisms for priming mealworms. This technique has the advantage of reducing the stress that occurs with the conventional methods for priming vertebrates.
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Affiliation(s)
- Sergio González-Acosta
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
- Escuela de Doctorado y Estudios de Posgrado, Universidad de La Laguna Avda, Astrofísico Francisco Sánchez, SN. Edificio Calabaza-Apdo, 456, 38200 San Cristóbal de La Laguna, Spain
| | - Victoria Baca-González
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
| | - Patricia Asensio-Calavia
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
- Escuela de Doctorado y Estudios de Posgrado, Universidad de La Laguna Avda, Astrofísico Francisco Sánchez, SN. Edificio Calabaza-Apdo, 456, 38200 San Cristóbal de La Laguna, Spain
| | - Andrea Otazo-Pérez
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
- Escuela de Doctorado y Estudios de Posgrado, Universidad de La Laguna Avda, Astrofísico Francisco Sánchez, SN. Edificio Calabaza-Apdo, 456, 38200 San Cristóbal de La Laguna, Spain
| | - Manuel R. López
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
| | - Antonio Morales-delaNuez
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
| | - José Manuel Pérez de la Lastra
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
- Correspondence: ; Tel.: +34-922-474334
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Chen J, Ran F, Shi J, Chen T, Zhao Z, Zhang Z, He L, Li W, Wang B, Chen X, Wang W, Long Y. Identification of the Causal Agent of Brown Leaf Spot on Kiwifruit and Its Sensitivity to Different Active Ingredients of Biological Fungicides. Pathogens 2022; 11:673. [PMID: 35745527 PMCID: PMC9229313 DOI: 10.3390/pathogens11060673] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/03/2022] [Accepted: 06/08/2022] [Indexed: 02/04/2023] Open
Abstract
Kiwifruit (Actinidia chinensis) is an important commercial crop in China, and the occurrence of diseases may cause significant economic loss in its production. In the present study, a new pathogen that causes brown leaf spot disease on kiwifruit was reported. The fungus was isolated from an infected sample and identified as Fusarium graminearum based on morphological and molecular evaluation. Koch's postulates were confirmed when the pathogen was re-isolated from plants with artificially induced symptoms and identified as F. graminearum. Based on the biological characteristics of the pathogen, it was determined that: its optimal growth temperature was 25 °C; optimal pH was 7; most suitable carbon source was soluble starch; most suitable nitrogen source was yeast powder; and best photoperiod was 12 h light/12 h dark. Further investigations were conducted by determining 50% effective concentrations (EC50) of several active ingredients of biological fungicides against F. graminearum. The results showed that among the studied fungicides, tetramycin and honokiol had the highest antifungal activity against this pathogen. Our findings provide a scientific basis for the prevention and treatment of brown leaf spot disease on kiwifruit.
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Affiliation(s)
- Jia Chen
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Fei Ran
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Jinqiao Shi
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Tingting Chen
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Zhibo Zhao
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Zhuzhu Zhang
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Linan He
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Wenzhi Li
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Bingce Wang
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Xuetang Chen
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Weizhen Wang
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
| | - Youhua Long
- Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (J.C.); (F.R.); (J.S.); (T.C.); (Z.Z.); (Z.Z.); (L.H.); (W.L.); (B.W.); (X.C.); (W.W.)
- Teaching Experimental Field of Guizhou University, Guizhou University, Guiyang 550025, China
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